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Larry, Paul,

It  seems Japan Inc. recognize this as well, because the real training
starts when the newbie enters the company.

 " A recent graduate of a MIT made his appearance at the corporate
office and upon meeting the president received a mop with the
instructions to clean the hallway floor.   He complained "I can't do
this  work, I was hired as an engineer."   "Right," says the
president, "I forgot... you are a college grad." "Let me show you
how."

One thought on turbo compounding and dynamic energy recovery.  Why not do
both? The race car
would have some lower BSFC  and/or power merits on the straights and
coming out of  curves but the T.C system does nothing to recover energy
upon braking.  Looking at the compound rotary turbine and its connected
mass as a flywheel however, then perhaps braking could accelerate it
even more.

The flywheel becomes the energy source and braking and a downsized
computer controlled engine the power sources.  Brake wear is almost
eliminated,  engine is way downsized and
run at its most efficient speed. The connection to the flywheel/turbine
from the engine could be mechanical with an over running clutch.

And what would be the connection between the wheels and the flywheel?

Hydraulics or electric?  My bet would be on electric in-wheel motors.
The race car is a complicated study in total efficiency and not the
least of the challenges is overcoming air resistance, and maintaining
traction.   In-the-wheel air cooled motors are a big plus for delivering
power and weight exactly were it is needed.   Yes wire efficiency is not
as great as direct mechanical shaft connection but the car is not
battery powered, it is flywheel powered.

Doug in Japan

Adding unsprung weight is horrible for vehicle handling in bumps.  Big
hp electric motors are very heavy compared to light weight race
wheels/tires.  I think there's some multiplier that's commonly used
for the evaluating the cost of unsprung weight - like 3:1
unsprung:sprung.  I suppose brakes could be made somewhat
lighter/smaller if the motor reliability is good enough.  I don't know
what the offset would be.

And then, you propose using another electric motor to transfer energy
to-from the flywheel?

Haven't we had this conversation?


Matt-

Check out the Michelin wheel hub motors that also contain active suspension.
jd

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