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I keep hearing about hydrogen and batteries being an either/or problem, but it doesn't make sense. For one thing, gas/electric hybrids exist and have been succe
by scythe 5y ago
I keep hearing about hydrogen and batteries being an either/or problem, but it doesn't make sense. For one thing, gas/electric hybrids exist and have been successful despite requiring two engines.
But with hydrogen it's even simpler because a fuel cell already feeds an electric motor. You only need one engine to use both forms of storage. And the advantage of putting a battery in your hydrogen vehicle is immense: you get cycle optimization, regenerative braking, improved peak acceleration and cheaper short trips (w/ plug-in hybrid) because while hydrogen can compete with electricity on convenience, it will never compete on price.
Granted, the battery brings a weight penalty, but potentially much less than if you tried to deliver 600 miles of range with 18 wheels and 60 tons gvw.
Is this a problem for Tesla? Not if they just acquire a hydrogen startup if/when the time comes. The market for pure electric vehicles will not go anywhere. The question is whether the administration has the necessary competence.
- mywittyname 5y ago> For one thing, gas/electric hybrids exist and have been successful despite requiring two engines. Hybrids are pretty simple. Toyota Hybrid Synergy Drive is basically a replacement transmission and is much more basic in design than a conventional automatic. HSD reduces the number of planetary gear trains to just one, replaces the large number of clutch packs with two electric motors, and eliminates the torque converter all together. One could build a working HSD unit using 1920s technology. It just would need to be manually operated (probably using a lever similar to an aircraft throttle).
- fomine3 5y agoMechanically simple, but it was nightmare to develop the ECU at 1990s.