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SJC
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Proterra takes about 7 minutes to charge every 50 miles, so a 10 minute break every 90 minutes is not bad. However, the drivers would be those fat, overpaid, union guys according to Harvey :)
You could have opposing with separate combustion chambers and a common crank. The vibration cancels and they use a common super charger. 500 cc might make a good range extender with 50+ HP at lower RPM.
Yes, I have no comments for Herman, he believes he is right in everything.
Davemart, You have no soul for science, this may be pointing in a significant direction. This taken with all the other improvements might add up to a viable path. If it were easy, they would just put a bunch of Chemistry PhDs in a room and have the solution in a week.
"programs that industry is not likely to pursue on its own accord in the near term (2-3 years) in the absence of public funding" There we have it, governments do what private sector can't or won't that need to be done. When the government is in debt due to war and trickle down tax breaks, we can not do what needs to be done and we slip backwards.
With the right chemistry, super caps may not be needed. Toshiba and Altair make titanate batteries that can take a huge charge in a short time. 10-12 kWh of cobalt or manganese cathodes can take a lot of brake energy. We discussed the idea of a battery range extender using two packs on Green Car back in 2008. Not withstanding any attempts by Tesla to patent the idea, it stands as a good concept known to many. Musk says he does not like patents, but he seems to encourage his people to do so.
This is what happens when you give 16 trillion dollars in tax breaks over 30+ years, the money goes out of the country and development dollars dry up. It used to be the government brought in revenue to do research, now it is cell phones, video games and Twitter.
If few will buy it, it will do less good. You can tell prospective car buyers it is perfectly safe, but will they believe you? Will they make the choice to purchase when there are alternatives that they believe are safer? I am not making a judgment on hydrogen tanks, just pointing out buyer perception as a factor.
Again, marketing....find out if people want to sit on 10,000 PSI hydrogen tanks.
The people at Remy have a PM design but can make it inductive if the customer wants. Remy makes the motors for the GM Spark EV and other models. They are very experienced and skilled at making several types. to suit the need.
I don't know if this method will bring us higher capacity per weight and/or volume, but the idea of having two packs makes sense. We might end up with a 40 kWh pack the same size and weight as a 20 kWh pack, half the cost but less power density. The 40 kWh pack can produce 80 kW max. but the 10 kWh lithium ion can deliver 100 kW if necessary. The larger pack recharges the smaller pack and the smaller pack can produce acceleration current and take in braking energy. The larger pack may not quick charge, but it costs half as much while giving you twice the range. This is where marketing comes in, find out what is acceptable to the buyer and you know more about the goals. If most people don't need quick charge because they charge at home but want a 200 mile range at lower cost, then that is a worth while goal.
mahonj, You are on to something, the range extender idea gets away from one battery pack having to do everything. Power dense ion batteries and energy dense sulfur batteries would get us a LEAF with 200 mile range at a lower price.
Sure, it takes energy to make energy., that has to do with that "efficiency" thing.
Blender pumps are a proven technology, it costs very little to upgrade existing pumps, just an extra tank for the mixed alcohols. They can use the tank for mid grade, no car manufacturer specifies 89 octane anyway. GM and other car makers have said they would produce OFS vehicles at an extra cost of about $100 each. They have no problem doing this and said they would absorb the cost. It is politics and special interests that have delayed OFS for more than 6 years now.
Nicola Tesla invented the induction motor more than 100 years ago, but those Europeans are so far ahead. Tesla was a Croatian, so I guess that counts.
Producing cars is not producing batteries. Refer to A123 about quality problems.
An MCFC can take in pure carbon from gasified petcoke to power an SOEC to create hydrogen and oxygen. The oxygen goes to the MCFC, the CO2 and H2 go to creating synthetic fuels. The heat out of the MCFC goes to the heat input of the SOEC. Countries like Japan with no natural gas nor oil can get petcoke at $10 per ton.
With Open Fuel Standard (OFS) cars, they could run M85 and have variable super charge or turbo charge to get performance and mileage. Methanol can be made from many feed stocks, for that matter the ethanol in E85 can by synthesized as well. If we can get efficient spark ignited engines running series/parallel EREV designs like the Volt, every mid sized car could get 50 MPG, pollute less and use less imported oil. It is a matter of will and not technology, it can be done it we want to do it.
Three years after the Prius went on sale they had 6 month waiting lists to buy, you don't see that with a LEAF.
Yes it is, but not widely used. I wonder if people use big words to sound important,
Shouldn't the range be somewhere around 130-150 km If they had used Toshiba/Altairnano titanate batteries, they could discharge farther and charge more quickly, they would also last much longer. The space required would be greater, but a truck has the room.
Herman, Ponder this, $20 billion for Twitter, but battery and fuel cell companies beg for every dime. Rather odd that an entertainment/advertisement site would get more investors than companies doing good for human kind.