air-assisted injectors, sort of

[Gary Derian]

Faster burn rate will help those things but at some point, too fast a burn
rate makes the engine run rough.  Running really lean to reduce pumping
losses helps economy but so does a taller gear that causes the engine to
operate at low rpm and low vacuum.  Its good to have more than one way to
reduce pumping loss.

NASCAR restrictor plate engines, used at Talledega and Daytona, have
considerable vacuum in the intake manifold at full throttle.  A lot of
engine development work is directed at reducing the backflow into the intake
when the intake valve opens.

Gary Derian <gderian at cybergate.net>

From: Tom Sharpe <twsharpe at mtco.com>


>Sorry for the late reply. Here's another $.02. If I can get a faster flame
>front, I can reduce timing and torque loss from compressing burning
gasoline
>BTDC. I might even be able to reduce detonation.......If I could make the
>charge burn really fast (not detonate), I could time the engine ATDC.....
>You guys seem way ahead of me, so keep us all posted... Tom.