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The drop in capacity of electric batteries are well tested (in airplanes, for instance). What came up was two other hidden factors which were usually ignored (
by gopalv 14y ago
The drop in capacity of electric batteries are well tested (in airplanes, for instance).
What came up was two other hidden factors which were usually ignored (at least by one person - me).
The heater systems for the gasoline cars run on parasitic heating, so does the power brake vacuum generation.
Both need to be artificially generated for EVs, which busts the "slow brake" traffic MPG gain myth that the hybrids perpetuated.
- sliverstorm 14y agoThe heater systems for the gasoline cars run on parasitic heating I think you mean waste heat
- MertsA 14y agoThe brake booster on the other hand is parasitic.
- sliverstorm 14y agoTechnically correct, however the brake booster only activates when you are braking, in which case the engine is either spinning down to idle or idling. I am not certain of this, but I think this means it is essentially "waste work", because the engine would be idling anyway, and the power drain of the brake booster is not significant enough to warrant feeding the engine extra gasoline. This is distinct from things like A/C, which place a non-trivial amount of load on the engine even at idle, and often require things like a higher idle speed while engaged.