Giblet wrote:You are missing the point, as this is a discussion about KERS, and this is a solution to use already free energy to spin the flywheel.
As you likely know, a turbocharger has two parts, a turbine, that spins from the exhaust, and a compressor, that compresses the intake air going into the engine.
I am proposing using only the turbine half of a turbocharger, and have the turbine shaft spin up the flywheel, likely through some gearing. A turbocharger is not free power, as you need to feed more air into the motor, and burn more fuel as your "cost".
Using this setup would be actual "free power", similar to a compound turbo engine. If you use the exhaust gasses to help spin your crankshaft, or in this case your kers unit, you are not effecting the mileage of the car.
A Turbo-compound engine is a reciprocating engine that employs a blowdown turbine to recover energy from the exhaust gases. The turbine is usually mechanically connected to the crankshaft but electric and hydraulic systems have been investigated as well. The turbine increases the output of the engine without increasing its fuel consumption, thus reducing the specific fuel consumption. The turbine is referred to as a blowdown turbine (or power-recovery turbine), as it recovers the energy developed in the exhaust manifold during blowdown, that is the first period of the exhaust process when the piston still is on its expansion stroke (this is possible since the exhaust valves open before bottom dead center).
EDIT: Sorry, yea did get what I was saying, but I think that feeding wasted exhaust gasses back into the engine with a mechanical conversion is the future, if the regs allow it.
why not shrink the engine down to a smaller displacement and use a turbo you get more power with less weight.
Spinning the fly wheel is going to take energy too its not free.
its also not really kers its more a form of supercharging sorta