We Could Have Had Electric Cars from the Beginning
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There was no electric grid to speak of - even now there is concern the grid can't support all EV's, once you were outside the cities (and there weren't many back then) the grid was spotty. The miracle of being able to pour some cheap liquid in an engine and drive for miles is a considerable achievement.
Lead acid batteries weren't very good and were expensive (and still are) and don't last long compared to petrol engines.
Electric motors were big then - it was only rare earth magnets that made them small enough to consider using in cars at high speed/ranges.
Its always been possible to make a small electric commuter car to drive round at 30mph for short distances but even today there are none like this, because people want to take their cars on the road on the weekend without having to worry. In the 1900's it was the call of the open road and cheap travel (petrol was very cheap then) that made petrol win.
Early models of the Nissan leaf weren't too much more than that (though there have been some advances since the invention of electricity). However, golf carts are the modern version of the small electric car - and is street legal in service jurisdictions!
(Okay, technically what's street legal isn't literally a golf cart, and is called a low speed vehicle (LSV) and will only do 25mph, and aren't always electric, but close enough!)
Cars are mostly useful for larger distances, i.e. on highways, where slow vehicles are not allowed.
The main limit is carrying capacity - maximum power - and you really do not need that much stuff. This works long range too, and could work even longer range should there be proper cargo trains for bikes. But there aren't.
The trip time is typically needed to be less than 10h or you need alternative driver or a long break anyway. A car can go let's say 1000 km on average in that time. A plane maybe 5kkm and a train matches a car. A human powered bicycle goes perhaps 250-300 km. Man on foot goes 40 km.
In a city a car is on average 30% faster than a bike and even less vs a scooter or motorbike.
Except in the bigger mode of transport there is space to put in amenities and a spare driver or secondary crew.
Just like the flying pigeon bike was massively popular in china back in the 70's, I even saw one being ridden at Cranfield university by a Chinese masters/doctoral student in the late 70's early eighties.
The overall point was that bikes can be made to work, Asia is a large scale example, although as you say, not necessarily by choice. The Netherlands, and increasingly other parts of north west Europe are another example.
In India you can see entire families, Dad, Mum and Baby on Mums back riding a moped.
I'm not a biologist but I believe non white, non middle class people are capable of riding bikes... Even women! :P
Source: I've put about 14,000 miles on a bicycle, half touring, half commuting in Cleveland and Boston. for context, that'll seem absurdly large to non-cyclists, and quite small to serious cyclists.
And even if not, what would you gain with these weird single purpose vehicles that can't be used while remaining in comfort and need to be replaced every winter over a multi-purpose super-comfortable shared microcar? It's not even economical or ecological, ordinary bikes/scooters + microcars + public transport is the ecological/economical solution.
Isn't a wheelchair a weird single purpose vehicle, isn't a bike, or a car? There's nothing inherently wrong with being weird or single purpose, as long as it gets used.
'Around' 0c isn't that cold, gritting the road and putting on a coat would sort that. You're right there is weather that isn't great for cycling, just as there's terrain that isn't great for it either. I'm sure any global scale transportation solution is going to have its problems, no ones suggesting a one size fits all solution.
In Japan, bicycles routinely have child seats, and frequently two child seats (front and back).
Where I live, people tend to ride motorbikes on a weather permitting basis. Which means the bulk of days are in late May, June, July, August, and early September. Assuming they can afford to have a second vehicle.
[0] https://static.financialsense.com/historical/users/u242/imag...
[1] https://www.researchgate.net/profile/Gp_Pandey/publication/2...
^ For you hopefuls, I say likely not impossible. The machining to create these state of the art batteries requires a lot of other technologies.
https://www.racecar-engineering.com/articles/f1/williams-f1-...
https://newatlas.com/nawa-technologies-carbon-ultra-capacito...
https://newatlas.com/nawa-nanotube-ultracapacitor-production...
Formula E would be a good proving ground for them.
Though for usage in cars would imply some kind of small/portable vacuum storage tanks and a way to put the heat to work (most likely initially through a steam engine and eventually directly to electricity via advanced thermocouples[0])
And range, weight, and (eventually) price. Batteries need to improve in all these areas.
Fuel cell cars are expensive at the moment because they're produced in such low volumes. But Toyota thinks that if they produced FCEVs at scale they could build them cheap:
https://www.thedrive.com/tech/26050/exclusive-toyota-hydroge...
Everyone else is working on BEVs, including the Chinese.
https://www.electrive.com/2019/06/05/hyundai-to-sell-their-f...
and reduce that to a nearly solid material with extremly high energy density. Its okay to be a tesla fanboi, its not okay to propagate ancient technological "insights".
I know there are many, many problems to solve for fuel cells and if you are scared of some burning batteries, this solution probably doesn't provide much consolation.
It's impossible to neglect the efficiency here. Car-scale combustion engines have a real world efficiency of around ten percent compared to electric. A gallon of E10 contains 34.9 kWh and randomly picking a Toyota Avalon you'll get a real world 17 mpg with that[1], which works out to 16.4 mpge.
Compare that to real world measurements of a Tesla Model 3, a car that is MUCH more powerful and heavier, but gets 147.4 mpge[2]. The Avalon gets 11% as many miles per unit of energy stored. E10 is equivalent to 1.32 kWh/kg (4.8 MJ/kg).
Not to mention that graph of battery energy density is significantly out of date. Normal li-ion, is at 300 Wh/kg (1.1 MJ/kg) and li-sulfur is commercially available at 500 Wh/kg[3] (1.8 MJ/kg). Even Tesla's batteries are above 250 Wh/kg.
So the bottom line is the difference is ~5x right now. Is that enough to matter? 15.5 gallons of gas (standard fuel tank) weighs 44 kg, or 2.7% the total weight of the Avalon. The full capacity in batteries at 250 Wh/kg would weigh 232.32 kg, or 11.4% more. As much as 2 people + luggage. That's a totally irrelevant increase in weight; luxury or performance cars in a given class can weigh DOUBLE the lightest cars in the same class.
The energy density of batteries is a red herring for all vehicles except cargo/tanker ships and long-distance airplanes. It's completely irrelevant for vehicles. The charging speed is arguably minorly important but by FAR the most important things are the upfront and lifetime cost. That is related to energy density... the energy density of the power plant's fuel, not the battery. And again, it's incredibly naive to assume the weight is the major factor in cost.
[1]: https://www.fueleconomy.gov/mpg/MPG.do?action=mpgData&vehicl...
[2]: https://www.fueleconomy.gov/mpg/MPG.do?action=mpgData&vehicl...
I'm making the case that treating the specific energy/energy density of batteries as the end-all, be-all is foolish. I am not arguing that it is nonexistant, just not relevant.
For performance cars, weight is absolutely a factor. (I'm not aware of any performance cars that weigh twice as much as their competition.)
(I do think it is fair to ignore the financial energy density and assume that a century of progress would have addressed substantial fraction of that gap.)
Gravimetric (specific energy, Wh/kg or MJ/kg) energy is generally more relevant than volumetric (energy density, Wh/l or MJ/l), because batteries are about twice the density of gasoline. Weight is also more valuable than volume in most vehicles, and a battery system already takes up hardly any more than a full combustion system. For example most electric vehicles now have a front trunk just to use up the newly available space.
> For performance cars, weight is absolutely a factor. (I'm not aware of any performance cars that weigh twice as much as their competition.)
Sure, but again this is an 11% weight difference, and range matters least on a performance car. A 918 weighs 25% more than an Agera RS. If you want to talk about power density, an electric battery will beat a gas engine to absolute shreds.
Most (all?) production electric cars struggle to do a full power complete lap of Nürburgring Nordschleife without heat-related issues. They're amazing at the Stoplight Grand Prix (and I enjoy my cheap LEAF daily), but struggle as racecars.
>> I'm not aware of any performance cars that weigh twice as much as their competition.
> Sure, but again this is an 11% weight difference
I was just responding to a previous post claiming that "performance cars in a given class can weigh DOUBLE the lightest cars in the same class", nothing more. If you claim the span is much less than double, then I agree.
Very very fast although its not a racing car per se
No, they just don't make electric race cars. There is not yet sufficient demand. Properly cooled electric batteries make as much power as f1 engines without breaking a sweat.
Sony VTC5a cells[1] are 85% efficient at their full rated power, and can sustain that continuously for their full capacity. They do 2.4 kW/kg without a gas tank, exhaust, turbos, or intake. Their ten second burst current is double that, 4.8 kW/kg. That puts it at the same level or higher than current f1 engines, which run less than 2000 km.
If you count the weight of ancillaries as you should, electric batteries come out way ahead, particularly the most powerful ones.
> I was just responding to a previous post claiming that "performance cars in a given class can weigh DOUBLE the lightest cars in the same class", nothing more. If you claim the span is much less than double, then I agree.
I was referring to the A-F market segments when I said class, not saying that performance have a weight range that large. Performance or luxury cars can weigh twice as much as a lightweight car of the same rough size.
[1]: https://voltaplex.com/media/whitepapers/specification-sheet/...
Yeah, that's what I'm saying. If you have to leave your home to charge, the time is relatively unimportant. Sub 3-5 minutes is a big deal because you can do it on the way home from work, but you could also accomplish that with a battery swap or even a small top-off block you keep indoors. I could have phrased it better by saying that charge speed is arguably a major issue, but only if there is no way to solve the distribution problem.
Until then it's pretty low value- 10 minutes doesn't have much benefit over 30 minutes since you have to plan around it. If you're stopping for ten minutes, you may as well eat or run errands, and then it might as well be 30 minutes.
If it's 30+ minutes you need to do it while you run errands or something, so it may as well be an hour. You'll only ever notice on the few days you drive for hundreds of miles at once. If it's over an hour, it might as well be 6+ hours, because you'll only ever do it overnight.
The tl;dr is that market forces led to early electric cars being slow and expensive- they were luxury vehicles primarily targeted at women, because they didn't have to be manually started. The cost was about equal before the model T, and speed could have been equal without any design compromises. The cost of fuel was also about equal.
The main reasons they weren't adopted was the lack of charging at home and secondarily the lack of good speed control. Not a big issue at low power, but once you can hit 40+ mph it's cumbersome and dangerous to be throwing switches to accelerate.
Right now, that is still 'Big Oil'. They are buried into our politicians pockets like an Alabama tick.
So if you're going to attack me, attack me on my points. Don't create a false comparison. Petrol had more than 10% efficiency from the get go. 10% of 50MJ/kg is much larger than 100% of 0.18MJ/kg (upper end of Lead-acid). You'd have to have an engine under 0.1% efficiency for EV to be able to compete in the beginning. (You'd have to have that upper end of lead-acid) This is all my comment was about. The state of technology and manufacturing (both!) over a hundred years ago. I was responding to "We could have had electric cards from the beginning" not "We can have electric cars now". If I said the latter then I understand your visceral, but I didn't.
Yeah, things are different now. Those 1.8MJ/kg engines at 100% (we'll round up) are able to start competing with 25% of 50MJ/kg(12.5MJ/kg), but there's still a way to go. That's why a Camry and Model 3 have similar weights and the Camry gets twice the range. But yeah, things are looking much better for the EV's now because there are other factors that matter like torque, space, and we don't need to often go more than 200 mi. But most of these factors are, for the average user, less important and so don't matter as much. Especially in the beginning where electric vehicles were struggling to drive between cities.
I look forward to the future of EV, but that doesn't discredit the history. And that doesn't make lack of technology a myopic take. Reality is just that a petrol vehicle getting 100 miles range is easier than an electric and requires less advanced technology and manufacturing techniques. But technology and manufacturing has progressed A LOT in the last hundred years.
That's irrelevant. The thing people keep forgetting with fossil fuels is that most of that energy is being wasted to just produce heat. With an EV, 95-98% of the battery's energy is being used for propulsion (unless you turn on a heater of course).
In short, you're comparing apples to oranges.
Now, let's adjust that for the efficiency of the power train. Let's give the electric car 100% (in practice it's 95-97%). Production ICE engines are around 20%. That gives us 46.4 x 0.20 = 9.28 MJ/kg.
That's a 10.6x difference in favor of petrol if we take the optimistic 0.875 number. The most fuel-efficient cars sold today consume around 5L/100km. A liter of petrol is 0.78 kg. A 1000 km of range is the probably holy grail for an electric car.
A a car powered by petrol needs to carry 39 kg of fuel at the start of a trip for that range. That'll be at best ~390 kg for the Tesla at its theoretical limits, which isn't counting overhead weight associated with the battery pack, and unlike a petrol-powered car the weight doesn't reduce as you go through the trip (a significant hurdle for e.g. electrically powered airplanes).
Of course the power train of an electric car is lighter than on the ICE-power vehicle, but the ICE still wins, and all of this is before we get to the battery needing much more volume than petrol, although as the Tesla shows you can win back some space by placing it in the floor, which isn't a realistic option for ICE.
None of this means electric cars aren't viable, but the weight and volume differences for the same MJ are inherent, and aren't going to go away.
As for airplanes, this discussion is about cars, not airplanes, where things are really different. Power-to-weight-ratio is far more important with aircraft since they have to fight gravity constantly. Aircraft will surely be the last bastion of fossil fuel usage because of this.
So while the gp to this comment and my original comment focus on the weight and density of the storage media this is one of the largest factors. What the graphs I linked to show is that basically the weight for gasoline is not a major part of the vehicle weight. But on the other hand, for electric vehicles it is a significant weight.
The point I was making with my original comment wasn't that electric vehicles won't win (I think they will) but rather that it is a ridiculous notion that they would have won from the beginning. These new batteries take extremely complex engineering to achieve. And only because of these new batteries are they starting to win. If we go back to when everything was made from steel then your electric car is also going to gain more weight. Even from the get go petrol vehicles had longer ranges. My comment (and a lot of people are missing this) was not about NOW it was about the past. I want to stress that it has nothing to do with current tech. It has to do with what technologies they had available to them. Also how impressive the work is that has been done to create these new generations of batteries (and is still being put in). Petrol won because it was the easiest route. But EV is winning because it is superior (with the advancements and the path that it is on).
E.g. the Chevy Sonic[1] & Bolt[2] are equivalent EV/ICE vehicles. They weigh 1300 & 1600 kg respectively, have the same cargo volume, but ranges of ~750 km (most pessimistic) & ~380 km (most optimistic).
So that's the like-to-like comparison. We can see that all things added up these vehicles are heavier and have much less range.
2) These volume savings are overstated and if anything work in the favor of ICEs, not EVs.
Look at a cutaway of the Chevy Bolt[3] or other reasonably priced EV like the Hyundai Ioniq or BMW i3[4]. Yes you get relatively more cargo volume in a Tesla Model S compared to other Sedans, but at that point you're paying tens of thousands for a luxury vehicle whose gimmick is things like the frunk. If you drop the same money on an ICE that optimizes for cargo space you'll come out way ahead.
3) A Tesla Model S's 85 kWh battery pack is 540 kg. If that's 3-4 adult Americans they've gotten a bit fatter on average since I last checked :)
In any case, that gets you a 420 km range, which tells you something about how heavy the car would be and how little space would be left for anything else if they were aiming for ICE-like range.
4) "Gas cars do not get significantly better fuel economy with empty fuel tanks": Yeah exactly. The point is that EVs inherently do not share this benefit.
5) Yeah we're talking about cars, but the point of bringing electric airplanes into it is to show how electric vehicles are weight and volume limited in an area where everything is done to bright the weight down, whereas someone might (wrongly) argue that for cars the weight doesn't matter that much.
1. https://media.chevrolet.com/media/us/en/chevrolet/vehicles/s...
2. https://media.chevrolet.com/media/us/en/chevrolet/vehicles/b...
3. http://www.boronextrication.com/2016/04/03/2017-chevrolet-bo...
Here's one. The Renault Twizy: https://www.renault.co.uk/vehicles/new-vehicles/twizy.html
The e.Go Life only has 100km range in the base model (the e.Go Kart looks pretty fun): https://e-go-mobile.com/en/models/e.go-life/
The Sono Sion has a small battery but plenty of solar panels: https://sonomotors.com/en/sion/
The Honda e is a nice looking city car with only 200km range: https://www.youtube.com/watch?v=MfD67KCFxqI
The electric city car certainly exists. I wouldn't buy one but you can if you want.
These are called microcars[1] and a lot of models exist. E.g. the Canta[2] (both petrol and electric models) and Biro[3] are quite popular in The Netherlands. There they're given preferential regulatory treatment, e.g. you can park them on sidewalks and drive them down bicycle paths.
The problem with a small car that can go at max 30 mph is that a moped is a much better fit for most use cases for such a car. An advantage of a car like the Canta or Biro is that they're fully covered, so you won't get wet in the rain. But you can also get good moped rain covers, and mopeds are a lot cheaper.
1. https://en.wikipedia.org/wiki/Category:Microcars
One of Tesla's less obvious innovations is going beyond silicon to silicon carbide for high-power control: https://www.systemplus.fr/wp-content/uploads/2018/06/SP18413...
Milk floats lasted a long time as ubiquitous home delivery EVs. Maybe we'll see their return.
Hmmm? There are quite a few like that, off the top of my head:
- Peugeot Ion
- Smart electric
- Renault Zoe
- Mitsubishi imiev
- Fiat 500 had an EV version
- Don't remember the name but some citroen too
Not true- Pearl street switched on in 1882, the first overhead wires went up in 1883, and by 1899 there were hundreds of generating stations. Until around 1905-1910 there was no real standardization, leading to a mix of DC, polyphase, and split-phase systems since light bulbs don't care what they run on. Roughly standard split-phase pretty quickly won out and the first electrical washing machine was sold in 1907, before the first model T.
The problem is much more fundamental: you can't charge a battery on AC. Getting DC power at home was NOT easy. You needed a phase converter (an AC motor connected to a DC motor) or a mercury rectifier[1], both FAR from affordable.
> Lead acid batteries weren't very good and were expensive (and still are) and don't last long compared to petrol engines.
That's just goofy. Research doesn't just happen, there has to be real interest and funding. There was no significant interest in batteries for half a century.
> Electric motors were big then - it was only rare earth magnets that made them small enough to consider using in cars at high speed/ranges.
Totally wrong. Electric motors have always and will always be far more compact than combustion motors. In fact induction motors -the kind used in the Tesla Model S- have been essentially unchanged since 1889, when the first squirrel-cage motor was invented.
> Its always been possible to make a small electric commuter car to drive round at 30mph for short distances but even today there are none like this, because people want to take their cars on the road on the weekend without having to worry. In the 1900's it was the call of the open road and cheap travel (petrol was very cheap then) that made petrol win.
No it wasn't. The Model T had a maximum range of 250-300 miles, and as the article says the Detroit Electric could do 240 miles. The Model T did over double the top speed and cost a fourth as much, but the speed wasn't due to technical limitations and the cost was because electric vehicles were a luxury item (the battery was a low-ish premium). Electricity and gas cost roughly the same at the time. It was all about the charging.
Efficient electricity transmission requires high voltage. High voltage requires transformers. Transformers require AC. Batteries require DC. Until it was cheap to convert AC to DC, electric cars had no chance.
Energy density (MegaJoule/Kilogram):
Lithium-ion battery: 0.36–0.875 MK/kg
Gasoline: 46 MJ/kg
for reference, Uranium: 80,620,000 MJ/kg
We might get parity between gasoline and electric by 2045 [0].
[0]: https://cleantechnica.com/2016/05/13/ev-battery-energy-densi...
Er, steel? Steel was about as exotic as titanium is now until the 1860s when the Bessemer process went into volume production.
The keyword being "UK". We can include the US and a bit of Western Europe plus Japan.
For much of the world a train was exotic even far into the 20th century.
https://en.wikipedia.org/wiki/List_of_countries_by_populatio...
And then compare that to the UK in 2019: https://en.wikipedia.org/wiki/Rail_transport_in_Great_Britai...
This is an odd tangent, though, if you are interested in humanity's ability to do fine metalworking etc. and how this influenced what transport technologies were viable in what year. This isn't about rural backwaters, anywhere. It's reasonable to define mass adoption to mean that millions are using the thing, although obviously the first million will be in advanced bits of the world.
To build an effective steam engine, you need a precisely ground piston and a precisely bored cylinder, otherwise you can't get useful working pressures. Grinding the piston is laborious but straightforward - you just need two centers and a cutting tool to achieve a rotationally symmetrical part. Boring the cylinder is much more challenging, because you need to cut a very wide, very deep, very straight hole into a huge lump of iron. Cutting that hole requires a very rigid, very powerful machine.
John Wilkinson developed an effective boring machine in 1774 for making cannons, but it was limited in speed and capacity by the water wheel that powered it. The next year, the Boulton & Watt company was founded, building stationary steam engines with cylinders made by Wilkinson. Wilkinson received the second steam engine built by Boulton & Watt, which he used to power a bigger and faster cylinder boring machine, which he used to build more and bigger steam engine cylinders for Boulton & Watt.
In other words, modern industry is the product of modern industry.
The plans and steps all require a computer (cept for the simplest of chips which would'be been originally hand-designed). This means that if there's some planetwide disaster that wiped all electronics, we'd have to restart from scratch as even viewing the blueprints of a chip requires a chip!
Another bootstrapping problem is making a precise screw thread without another screw, as in a lathe, to use as a reference. This was solved by Maudsley, who invented the "screw originating machine".[1]
The sequence for bootstrapping machine tools from a very low level is well known, because hobbyists sometimes build their own machine tools and need to take upward steps. Hammer, anvil, forge, lathe, better lathe, better lathe, good lathe, planer, bigger planer, drill press, better drill press, milling machine, better milling machine, good milling machine. There's a set of books on this intended for a post nuclear disaster. (It assumes you have aluminum scrap around.) Electronics is tougher to cold start.
[1] http://collection.sciencemuseum.org.uk/objects/co46546/tool-...
Trains got substantially more efficient circa 1850-1950, more miles-per-ton, and I believe the reason was essentially that they made hotter steam, because efficiency is bounded by the temperature difference (thanks to Carnot). And the limitation on how hot you could make steam, in any given decade, was that you needed the cylinder to still be lubricated at that temperature, and this technology slowly advanced.
I think this is one of the reasons internal combustion engines didn't appear sooner. They are necessarily quite hot, even more so for diesel, which is later (and more efficient).
Literally so until 1824.
https://www.theatlantic.com/technology/archive/2011/03/the-e...
Another article which touches on the subject: https://grist.org/article/2011-03-28-alexis-madrigal-crazy-g...
"At a time when many people were stuck inside new urban confines, unable to get outside to private spaces, having a car that could tour, a car with a lot of range, was quite appealing.... And it was just sexy to go fast. People like to go fast."
I don't think manufacturing a working model of such a thing would have been within reach for a couple of undergrads, although the project we went with was almost as ambitious— we ended up building a mostly functional laundry washer from scratch.
> The long-term development goal is to have a system capable of volume production within ten years.
I guess they canned the project?
I read about a government program in maybe the 70s (oil crisis?) where steam engines were reviewed to replace gas engines. The reason being is that burning fuel at atmospheric pressure means you burn it more cleanly and fully. This sounds like an efficiency balance at some level, certainly a pollution advantage.
A quick search brought up this:
https://en.wikipedia.org/wiki/Advanced_steam_technology#Auto...
Superheated steam or closed-cycle (eg. Stirling) engines can do a lot better than this - Stirling engines can reach 50% efficiency, and this is nearly matched by superheated steam engines as used in power plants. But then you run into weight & safety problems. Superheated steam is great in a nuclear reactor or battleship, but in a car where a crash could easily break the engine piping? You're turning survivable crashes into death traps.
Even if there are some efficiency limitations, a small steam generator (range extender) combined with an electric vehicle could be ideal.
I really don't think efficiency is the primary problem with steam/heat tech, I think it's politics and society and possibly greed.
Edit: a quick search, it seems the Carnot limit applies to ICE engines as well. So your argument seems to be contradictory. Can you clarify how ICE engine efficiency is different from steam, related to the Carnot limit?
The relevance to ICE vs. steam is largely about material science. You're limited first of all by mechanism by which the working fluid is heated and second by the materials used to contain it. Regular non-superheated steam never gets past 100C (373K), because once it does it boils off and the steam transmits the heat away from the heat source into the engine. Superheated steam (as in a nuclear reactor or military-grade steam turbine) can get significantly higher than that, and reach corresponding efficiencies, but you have to figure out how to continue applying the heat source to the steam after it has boiled, and that steam will be under correspondingly high pressure (because of the ideal gas law: PV = nRT), so you need materials that can both contain the high pressure and don't degrade under heat. The working fluid within an ICE is entirely contained within the engine; thus, the primary constraint is that the material used to construct the cylinders can't melt or deform under the heat of combustion. The big advantage of ICEs is that you don't need any piping, though, so you can machine the engine out of a solid block of iron or similar material and get all the strength that results.
Electric or solar-thermal Stirling engines actually do have very good efficiency ratings. But the key here is for stationary uses. They are big, bulky things, because they have to be to provide sufficient heating to the working fluid and then move it to and through the engine without any pipes bursting.
Moving vehicles have a large constraint: any engine adds to the weight of the vehicle, and has to be accelerated along with the payload. So power-to-weight is crucial: an engine that has equal efficiency but weighs as much as a car has effectively half the efficiency, because you need to move twice as much weight around. That's why most of the interest is in either smaller (and hence lighter) ICE cars or in electric drive: electric motors have very good power-to-weight ratios if you can make the battery storage light enough.
No, that's not true at all. Big power plants stayed with steam for efficiency reasons, and they are pretty close to theoretical limits.
Cars and aeroplanes, and later ships and trains, went to internal combustion because size and weight are very real concerns for them, and this trade-off against pure efficiency (heat-to-torque) was worth making. In the name of overall efficiency, if you like -- smaller engines meant more cargo room, so in oil-to-cargo terms you could come out ahead.
More electrical now is gas-turbine, but again this is about trading efficiency for other things -- peak-hour electricity is worth much more than 3am electricity, etc.
Assuming both sets of stats are correct, it sounds like something happened between 1914 and 1917 that led to the switch from electric (or steam) cars to ones powered by internal combustion engines. Perhaps the First World War?
[0] Parent comment reference, i.e. http://www.edisonmuckers.org/edisons-cars/
[1] Main story link, i.e. https://longreads.com/2019/06/13/we-could-have-had-electric-...
I imagine the democratization of automobiles in the teens and 20s lead to the cheapest solution winning.
My 2018 motorcycle tops out at 110mph, to give you a comparison.
Why don't we have steam cars?
Because in the early 1900's steam cars they couldn't compete with the elegance of ICE vehicles. The engines were big and heavy, the fuel was hard to manage, they took a long time to warm up, etc etc. The internal combustion engine was just a way better tool for the job.
Same reason electric cars didn't win: The ICE was just a way better tool for the job at the time. This is now changing, but very slowly.
Tesla, for example, still doesn't have an official Nurburgring lap time because it simply isn't able to drive at racing speeds for long enough without the battery overheating and reducing power output to avoid damage. Yes racing electric cars exist and they're awesome, but even Formula E swaps cars in the middle of the race because a single car can't last long enough.[1]
It does look like VW's electric supercar currently attacking the Nurburgring lap record. Already holds the absolute record for Pikes Peak. Exciting times we live in :)[2]
[1] https://www.quora.com/What-is-the-time-clocked-in-by-Tesla-M...
[2]https://arstechnica.com/cars/2019/05/vws-record-breaking-ele...
If memory serves, until very recently, most consumer rechargable batteries would basically stop holding charge after 2 or 3 years. Was that better for bigger batteries? I don't know ... but it would suck to have to buy a new car battery every 3 years since the lifespan of most [modern] cars is much longer than that.
As for racing being a harmful distraction: maybe. Depends on the type of racing. I like racing as a driver of what-can-this-technology-possibly-do. Bleeding edge engineering that trickles down to consumer devices. Racing is great for that.
As for the article's claim that electric cars even back then were better than ICE for city driving ... in the city nothing beats a bicycle, a brisk walk, or public transit. Cars were never a good fit for cities.
A properly managed car battery won't be kept at 100% charge level, and will definitely not be discharged down to 0%.
Car HV batteries are kept at 80-40% (Varies by chemistry) state of charge to prolong battery life. A Prius can go hundreds of thousands of miles on their original battery, and have been around for over 20 years.
For example, in the `50s custom car builders were "sectioning" the bodies and "Z-ing" the frames to make cars thinner and lower to the ground. By the `60s all the big manufactures were building cars styled like that.
But racers have had a huge influence on mass production cars and still do. One simple example of that is the coolant overflow tank. As I recall it was small circle track racer that made that mod to his race car and encouraged other car owners at the track to install them because when cars overheated and blew coolant on the track it caused delays in the races. If I recall the story right he had to sue the car companies to enforce his patent and collect a royalty.
plus we focus on range because recharging is slow, not because range is a core value of the vehicles per se. and that point stands. sure you can commute, once, but then how long is the recharge? having two vehicles because you need to leave one at the office recharging for the next day commute is going to be inefficient.
and then there's all the stuff about battery self discharge, capacity depletion and burning everything down if shaken. it's not like battery tech then was that great.
They have given up on that, and there are certainly some problems with the model (for example, what if you own the battery, and they replace it with one in poorer condition?), but other companies are still pursuing it: https://electrek.co/2018/11/01/nio-battery-swap-station-next...
Now I'm really curious: with a limit on the Tesla's performance to keep the battery from overheating, what's the fastest time it could do?
That they don't have an official lap time for this reason strikes me as almost dishonest, since they marketed the Roadster entirely and the Model S significantly on performance. But you can't actually drive either to its limit for more than a couple minutes? Lame.
Notice all of Tesla's marketing is about acceleration, not lap times. They beat any other car hands down on the drag strip. But cornering is just not their forte (too heavy) and driving fast for a long time is hard (too much power draw).
There are unofficial times [1], but Nürburgring apparently takes manufacturer wishes into respect on declaring official times.
Multiple EVs have official times at this point. Tesla doesn't seem to care right now.
(VW, on the hand, with Nürburgring in their backyard has to care, and it is fascinating to hear what's going on with their EV race teams.)
[1] An example: https://jalopnik.com/heres-what-a-tesla-model-s-can-do-aroun...
The 3 is better on the track than the S. Still heavy, of course.
The earliest ones were coal or wood burning, we're also talking 1880s
External combustion just sucks. Heat exchangers, or indeed anything that transmits heat through solid/fluid interfaces, are not something you want if you can avoid it. The ICE has the advantage that the working fluid carries most of the waste heat away from the vehicle.
Interestingly, we're seeing the same thing play out in stationary power plants today. Gas turbines are beating steam-based power plants (coal, nuclear), because they have much lower capital cost.
This is a silly point of fact. Motorcycles have been capable of achieving far greater than 110 mph for a long time; a top speed of 110mph puts your 2018 vehicle on the low end of the speed range for "motorcycle" class vehicles (as opposed to scooters, mopeds, ebikes, etc). My random 1997 low-end 600cc sportbike could exceed 130 mph when it was 15 years old.
Electric power only became practical enough for motorcycles in the last few years.
Here's one from 1860: https://www.popularmechanics.com/cars/motorcycles/a26052/186...
Ransomes, famous maker of traction engines and inventor of the powered lawnmower had a couple of patents for steam motorcycles, but I've never seen details of what they envisaged.
Maneuver warfare would have been impossible on electric. And then when the war was over, all that surplus machinery was around, and so were the factories that built it.
All true. If we ignore the massive increase in infrastructure needed to make them viable outside of cities. And also ignore, as the article does, the time it would take to charge along with the short lifetime of batteries in that era. It doesn't matter if their range equaled that of an IC, the IC could be ready for the next leg of a trip almost instantly compared to an EV. Effectively this halved the range of an EV. If you could only drive 60 miles and there was no guaranteed prospect of charging at the end, you had to be able to return home to charge, meaning 30 miles out and 30 miles back.
All issues that still represent bottlenecks to EV adoption today, albeit much less so, and which are gradually being overcome.
I think the author reads entirely too much into the supposed psychology of an IC powered vehicle instead of the much more simple explanation: path dependency.
"The Lohner-Porsche's design was studied by Boeing and NASA to create the Apollo program's Lunar Roving Vehicle."
I'm saying this as a someone who prefers electrics over ICE...
Like I said before. I am a big fan of electrics. Currently drive a Volt and plan on getting a Tesla eventually, but am not blind to it's faults.
If we were talking about what lead to using leaded gasoline there is a different argument because that could have been avoided.
Given the lower population density and the fact that in the early 1900's a large percentage of the population did not have electricity to charge the batteries.. when you factor that in with the other issues of electric cars vs ICE I can see why electric cars did not take hold at that time.
but there are a lot of reasons why it never made it into production.
cue the anti-nuclear power comments
[0]: https://qz.com/568450/fossil-fuels-kill-more-people-every-ye...
[1]: http://www.world-nuclear.org/information-library/country-pro...
Because that's how many people coal kills. And Im not talking about global warming. I am instead only talking about the pollution deaths.
If Chernobyl happened like 3 times every single year, that would still be safer than coal, TBH.
More like 300, assuming 4000 (as per the IAEA) deaths from Chernobyl.
A nuclear vehicle would be impractical due to waste and risk.
There were levels of vehicle use that were perfectly acceptable. But now that transportation is a world wide commodity instead of a luxury those effects are inescapable.
So there was some point in time where the balance shifted, and then it took a long time for the reality to set in (and some part of the world are still in denial). And it will take some time still to shift to electrical vehicles, but those too have their own waste and risks, some of which will only become apparent when their adoption rate crosses certain thresholds.
Crystal balls are in short supply.
No crystal ball needed.
Globally the biggest source of emissions is energy production which represents about 35% (25% of direct emissions and 10% of processes like refining fuel).
https://www.epa.gov/ghgemissions/global-greenhouse-gas-emiss...
So, I doubt emissions from ICE cars would be as bad as widespread nuclear residues from nuclear cars.
Gates interview on energy
Yeah, energy production, storage, and consumption is really the fundamental problem to solve.
For example Vlacav Smil has said many times that the US should invest heavily in home insulation to reduce heating and AC energy.
Clearly feasibility has a big part to play as well and everyone driving around little fission reactors would be ridiculously impractical from both an engineering standpoint, as well as a safety one too. Not to mention it becoming a terrorists wet dream because of all the waste material. (Not that I’m normally one to play the “terrorist” card)
I wouldn't be surprised if, had we gone down that path, automobiles had less fissile material in them than platinum. Currently fissile materials and high explosives are purchasable, we just keep an eye on purchases and follow up on suspicious buying patterns.
'Practicality of a thorium-powered, superheated-steam car?' https://worldbuilding.stackexchange.com/questions/69576/prac...
As the article notes most EVs at the turn of the century had a range of 40-70 miles. The model T of around 1910, ten years later, had a range of about 90. Earlier ICE cars were down nearer EVs.
A century ago battery and ICE technology were not that far apart. i.e. both fairly primitive. If electrics had been chosen and had 100 years of continual minor incremental improvements...
Alas I think that ship has sailed, aside from energy density the modern electric VFD wins along a whole range of design constraints(torque, size, latency/traction response, efficiency, etc).
Edit: since you mention a ship, some use large opposed-pistol Diesel engines (two oppositely meeting pistons around the combustion chamber per cylinder which also allows the cylinder to be much wider)... don’t see these in either planes or cars... Hydrogen power?—- Hydrogen is difficult to keep contained because it escapes through anything over time unless we put heavy ceramic tanks in our cars.
Wankels go in Mazdas.
Where the maintenance and dirtiness were their major detractors, refined fuels and new burners solve these.
Steam engines can and could have been refilled at any gas station, could run on any multi fuel including biodiesel. They theoretically require less maintenance, no oil changes, no cooling system.
They'd also have had greater range and greater top speed (though less acceleration without a hybrid design)
IIRC the main reason for diesel-electric locomotives for trains and large ships was that it was significantly more efficient than just steam, at least steam with just a boiler and pistons.
Of course, really large ships generate steam and then run it through a steam turbine -- no Diesel around.
To take advantage of the increased efficient of an internal combustion engine you'd need a lot of mechanical complexity unless you go hydraulic (solidly defeating most efficiency improvements) or electric.
No this is not true, see other comments / Carnot cycle. Steam can be extremely efficient. But diesel engines are much simpler and more compact, it's a trade-off.
An alternative would be to make hybrids. Use an electric motor to get reasonable acceleration and a smaller steam engine for cruising distance.
How can this be true?
Heat engine efficiency is reliant on temperature differential.
Battery technology is still basically just ordinary chemistry and, thus, hasn't made much progress in 100 years. E.g., we use a lead acid battery in cars now, and they had lead acid batteries back then.
Just look at the periodic table, pick some elements, and make a battery. They did that 100 years ago also.
If we do something special with graphene, high temperature superconductivity, maybe still with a capacitor of "doped barium-calcium-zirconium-titanate", etc., technology not known 100 years ago, fine, but these are all long shots, both as in risky and how long it will take to be successful or give up.
Gas-electric hybrid involves essentially two engines instead of one but can do some amazing things, e.g.,
Maybe a global electric car industry working on the problem 4x longer than we have would have come up with something better, maybe not. Alternate time lines are never certain. :)
Batteries aren't all of it though - how would personal transportation have evolved if every city and road network had electric distribution points for vehicles - as was planned in the 1910s - instead of filling out with petrol stations? The fast charger networks could easily have been something of the 1940s rather than the 2000's. We'd undoubtedly have standardised on a generic one that worked with every make of car by now. We'd probably have designed cities a little differently too.
Every quarter or so I do a 1500km(935 mile) trip and back. Nowadays it takes me two days, because I realized that spending around 20h behind the wheel without rest is simply dangerous.
My car's highway range is about 440 miles - but I rarely drive that far without refueling because the longest distance between my usual stops is 350 miles. And once stopped I don't just fill up an move along - I stretch my legs, grab something to eat etc.
My point being: given that the newest Model S achieves 370 miles and my favourite spots all happen to have superchargers I could probably pull this off in a Tesla adding maybe one stop and one hour to my trip.
We're there in terms of range. Now all that is needed is a reduction in cost.
If you follow the suggestions of the car and are willing to stop more the charge times are lower. However as I was hoping 190 to 210 at a time and driving the standard speed of I75 at the time I tended to push the charge to 80% or more.
Now the reason there is ninety minutes is you need to factor in charging at your destination. Seeing that my relatives had nothing more than standard 120 I was in effect anchored to my closest SC which was thirty six miles away. So at that point I charged to 95% which took longer. They don't live in a small Ohio town but there were only two good chargers, one at Nissan and one at the Ford dealer. Neither is good for a true long range car.
After that trip I realized there really is no point in carrying the mobile charge cable. I simply found hotels with nearby SC setups. Do not rely on destination charging as you are just as likely to find "guests" who act as if they own it and hotels are not keen on stepping in. There are times I swear fellow EV drivers are the most entitled pricks I have ever met.
This is not how it works in reality. Last 5-10% is essentially trickle charge so it is better to skip it and charge more often but faster.
Just compare average charging power between 20-80% part of the curve and 80%-100%. It is ~4-6x difference depending on supercharger type:
https://cleantechnica.com/2019/03/08/supercharger-v3-shockin...
Edit: I checked and the longest, indivisible hop in my route is 180 miles.
The posters talking about 500 mile journeys without a single stop strike me as being frankly bonkers.
Yeah, you can do it. Unless your concentration is fundamentally different to most human beings, you shouldn't sit in a car for 8 hours straight without a break.
On the Model S, on an infinite distance journey, supercharging increases journey time by about 20-30% maximum over driving all the way without a break (takes about 20 mins to charge 120 miles or 20-60%).
Spending 12-13 hours to do a 10 hour drive is fairly normal for me even in an ICE car unless you want to like, eat sandwiches at the wheel and piss into a bottle whilst driving.
I've looked into buying a Tesla and part of the reason I dismissed it is because here in Western Europe the supercharger stations are all in some bleak industrial estate by the highway usually next to a McDonalds or 1-2 restaurants.
I recently did a 1200 km drive between the Netherlands and Denmark & back. Looking at a map there's a supercharger every 100 km or so around that route, but having looked at some road trip videos on YouTube from Tesla owners their long distance trip becomes all about planning around the charging times.
I.e. I might drive for 6 hours with brief 3-4 brief 5-10 minute stops along the way, and maybe have lunch at some nice restaurant in a forest by the highway. Also, if you have young kids you really appreciate being able to loosely plan stops. I.e. "kids are asleep, let's keep driving" and "they just woke up, let's stop in the next 5 minutes for lunch".
Changing that sort of trip to introduce the variable that we must stop for 40 or so minutes (for 80% charging) in specific charging stations along the way might work for some, but I can't see how to plan around it without a lot of hassle. I'm not going to seriously consider an electric car unless there's something like Tesla's proposed battery swap where "refueling" takes less than 5 minutes.
Isn't that the same reason we still don't all drive electric cars?
I was always disappointed that NEV's didn't take off, seems like a perfect solution for cities and even suburbs -- lanes could be striped much narrower and parking could be much more dense.
But few people want to drive a glorified golf cart to the office, even if they only drive 10 miles and are stuck in stop and go traffic anyway, so the 25mph NEV cap wouldn't really change their commute time.
This article talks a lot about cars around 1900.
In the US in 1900, 60% of the population lived in rural areas and only 40% lived in cities. (See https://en.wikipedia.org/wiki/Urbanization_in_the_United_Sta...)
So working well in rural areas was probably a more important concern. A product that works OK for all your potential customers is better (from a business's point of view) than one that works a bit better for some customers and not at all for others.
Intuitively I always thought the only way of actually making a dent in emissions is to change the way we live by shifting to public transportation. Suburbia is what makes the US the leading greenhouse gas producers and only changing the way we live to be more like cities such as NYC or Tokyo do we actually stand to make a change. We need to reduce the usage of cars to make a meaningful dent in greenhouse gas emissions.
It's just that fossil oil is - relatively speaking - very cheap compared to other sources.
I don't think you can really make any sort of meaningful conclusion from this - rural areas tend to lag in this sort of innovation.
Not developed by my comment is in 1920 you didn't 'need' a car in cities. Since you had street cars. In rural/small town America cars were really useful but electric cars were a non starter.
That range is considerably longer than the range of my bladder, so once charging increases in speed, this "problem" simply vanishes. We're already on our way there, the first 250kW charger opened this week, and will add 180 miles of range in 15 minutes.
In fact, it's better than an ICE car, because I can charge at home, and start every single journey with 100% charge.
Personally I think a hybrid that plugs into 120, with a commuting range 50 miles and a back up gas engine will be the sweet spot
Range is no longer an issue for modern electric vehicles.
The reason it takes a while to recharge EVs is because of the enormous size of their batteries. Tesla Superchargers inject more power into the car than what comes into a regular home.
Quick math: A 100KWh is going to take a bit more than 100KW of power to charge in an hour. For comparison, an oven uses about 3KW...
PS. You can use abetterrouteplanner.com to find out exactly how many charging stops you would have to make on any arbitrary journey.
Not electric, but renewable, sustainable, and I'd assume (maybe wrongly) mostly carbon neutral.
There are no fuel shortages just because you have cars that use ethanol.
I'm not a huge fan of ethanol specially not how it was handled in the political process (farm subsides) but using it in general is not a bad idea if it can compete.
I think 20-30 years ago cars should have started requiring cars to support all that stuff and allow competition between the different fuels and different methods of fuel production. Meaning most likely methanol from gas, ethnaol from food or gas from saudi arabia.
Methanol from natural gas could have been incredibly successful specially because natural gas export is not an easy problem. Meaning that gas prices in the US were incredibly cheap and a huge fleet of car hungry for methanol would have made it reasonable to do the conversion process. Far less methane could have been wasted into the air.
Now I feel like time has passed and EV make more sense.
And don't forget wind power. Could do that, too. The intermittentness handled in areas by hydro as well. Then nuclear in the mid 20th century.
Besides, if all the car were powered by electricity, we probably would have made the electric grid cleaner and switch to renewables far sooner. Because switching from coal to gas and gas to solar/wind would have had a positive impact on almost all types of energy consumption: train, cars, heating, lightning, etc. Instead we had to invest in both the electric grid and ICE to try to make them clean, instead of just the grid.
According to the information found on page 7 of Cleaner Cars from Cradle to Grave, a report by the Union of Concerned Scientists [1], an electric vehicle that is charged by electricity from oil or coal generation has overall equivalent emissions to a gasoline vehicle that obtains 29 miles/gallon. Roughly on par with fuel-efficient contemporary gasoline powered vehicles. So I stand by my claim that electric cars don't solve the problem without addressing the emissions due to coal/oil based grid power.
In an alternative history, perhaps we could avoid petrochemical power, but it's not clear to me how we would have done that. Ford began production of the Model T in 1908. Solar and wind production would not have been feasible in the early 20th century, and even today hydroelectric power provides only a fraction of our energy consumption. See [2].
With regard to the original article, I find its analysis flawed. As I've already stated, power production for electric vehicles wouldn't have been clean in the early 1900's, but modern clean electric cars depend on more than a power grid based on renewable energy sources. They depend on lithium-ion batteries, invented in 1980. What would the country's electric cars have utilized before the 1980s? (Lead-acid and NiCad have serious environmental impacts, Lead-acid has poor energy vs weight, and NiMH batteries were not invented until 1989. All three of these battery types have charging rate limits that prevent them from being used in practical cars.[3])
Perhaps we could have done much better in the past with our decisions, but "masculine daring-do"[4] isn't the reason that we ended up with the levels of CO2 that we have in the atmosphere today.
[1] https://www.ucsusa.org/sites/default/files/attach/2015/11/Cl...
[2] https://en.wikipedia.org/wiki/Energy_in_the_United_States#/m...
[3] https://phys.org/news/2015-04-history-batteries.html
[4] From the original articles sub-title.
That's true! These differences change as soon as the cars are driven. EVs are powered by electricity, which is generally a cleaner energy source than gasoline. Battery electric cars make up for their higher manufacturing emissions within eighteen months of driving — shorter range models can offset the extra emissions within 6 months. Source: https://youtu.be/K9m9WDxmSN8
> the milage is a joke.
The 2019 Tesla model S has a range of 370 miles, and on new superchargers will add 180 miles of range in 15 minutes. Source: https://cleantechnica.com/2019/04/24/new-tesla-model-s-370-m...
Of course, most EV owners rarely use any charger other than their home one, since you can start every journey with 100% charge.
This might be "a joke" to you, I cannot say.
> And if electricity is coming from coal power plants it is all but green.
That's also true! Lucky then that all electricity does not come from coal power plants. In the US, that's only 17.8%. Source: https://www.eia.gov/energyexplained/
Those with solar panels on their homes don't get their power from any kind of power plant at all, just the sun.