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Old 07-20-2013, 03:16 PM   #263 (permalink)
jamesqf
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Quote:
Originally Posted by NachtRitter View Post
Another problem is that even if you assume constant rpm for the genset, you cannot assume constant load, especially if hooked up directly to the motor controller. There will be times when the car is climbing or accelerating when the genset is in its bsfc sweet spot, when cruising it'll be only part way up the bsfc (between your red and blue lines ), and when not drawing any power at all, the genset will be back there roaring away producing nothing.
Wrong. A properly designed genset would either be running at optimum BSFC, or not at all. If it's producing more power than the car can use at any moment, the excess power is diverted to the battery (and if the car needs more power, it comes from the battery). If the battery is above a particular charge level, the generator shuts down.
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