On Fri, 19 Oct 2007 18:42:22 -0500, Robert Swinney wrote:
Agreed ? Turbo-charging does nothing more than artificially increase atmospheric pressure -

Er, well, atmospheric pressure is 1 bar. My turbo puts out 1.6someting
bar. So, what forces air into _my_ engine's chambers is only somewhat
atmospheric pressure.

or
raise thin atmosphere to more nearly "ground pressure", such as in the case of high flying
piston-type aircraft. IMO, suction is not a very accurate description of why fuel is drawn into a
combustion chamber.

Yup, that answer equally sucks. When I was a college student I would
have been pretty damn intense about this ****ty question and the fact
that both wrong answers suck equally but I'm having a hard time caring


All non-Diesel piston engines are considered to be normally aspirated, AFAIK.
(someone will correct me, I'm sure) Suction is merely a way of ingesting more stoichoimetric air
and fuel mixture. The earliest IC engines had no compression, thus no suction was present.

And yet, in the last century, so little has changed in toe otto cycle
engine. Isn't that remarkable?