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Originally Posted by nash
I can't tell that there is any additional regen from pressing the brake pedal prior to the brake lights showing. Seriously, the pedal only travels a half inch or so prior to the brake lights comming on. With the radio, fan, ICE all off, coasting about 30mph, I can't detect any increase in the "Wrrrrr" regen noise prior to seeing the brake lights reflecting in the rear window.
Surface rust can cause the low speed brake squeak/and or grabbing. Try this: the next time you come up on a red light, put the TCH in neutral around 30/35mph and stop normally. It may take a few stops, but this will prevent any regeneration and force the TCH to use the brakes while stopping. This should wipe off any rust and eliminate or greatly reduce the squeaking.  |
I've been studying this for a while now as I am in the process of accumulating the components to construct my own Diesel-Electric Hybrid.
I think that the key to controlling the amount of back-EMF (regeneration) through the MG would be a lateral Inertia (Accelerometer) based system.
That said - since the MG and ICE both supply their associated power through the same power splitter - I would think that there would be no regeneration with the transmission in neutral.
I have the factory shop manual from Toyota but have been working so many hours I've not had an opportunity to examine this part of the system.
Well - that's my $.02 worth anyway..