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Brake specific fuel consumption
So,
i had an interesting thought - and i wanted to know if anyone knew if it was implemented or not.
Brake specific fuel consumption for a gas or diesel engine usually has a 'sweet spot' where the torque and rpm use the least amount of fuel. Usually auto manfucturers will make a specific gear and a specific speed meet the sweet spot eg 65 mph 4th gear = sweet spot in theory, but with changing road conditions it might not be there, so....
I was wondering if any auto manufacturers of HEV use this to advantage in the recharging of the battery pack? If the car could read the current fuel consumption and rpm, it would know the minimum torque/max torque in order to stay in the sweet spot and then use the electric motor to charge the batteries at a rate which would increase the torque to that amount. it would theoretically keep an engine in its sweet spot almost all of the time.
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