BTW, has anyone tried turning off their non electric car in any gear while it's moving.
It turns into a pneumatic abs break without the use of any break. the engine itself makes the car stop.Maybe something with a piston cylinder and a solenoid valve can introduce similar safety feature in electric car
I have. With the particular (pretty average conventional, AFAIK) gasoline engine in my car, opening the throttle doesn't seem to do anything. It moves air (the exhaust sound changes), but there is little backpressure, so the load isn't much more than the resistance of the engine moving alone.
A turbo diesel may be more effective, although there may be reasons not to do that (large air charge = high peak air temperature --> unintended combustion of residual fuel and engine oil --> actually generating more power than you're spending, or if your oil seals are very worn, runaway acceleration?). AFAIK, engines designed for that kind of braking have an air release, which I guess would occur near TDC, or as an exhaust restriction, and it is the pressure drop that consumes power. Downside being the incredibly loud noise thus generated, and the frequent sight of "engine braking prohibited" as you cross the city line...
Tim