Acetone Added To Fuel?

You in previous post:
"exhaust gas used to be recirculated, but that's been
dropped these days"

My link shows replacement EGR valves for Honda Accords, Odysseys,
and Civics. Which you claim they don't use. Hey, maybe it's a
scam?

You:
" and in racing cars, fuel was dumped to cool piston
crowns on throttle close, but excess fule in the combustion chamber
with throttle open? no."

So, fuel rich allowed on WOT, yes or no? First time you said "no".
Now you say "can/does go rich on wot". You are correct the second
time. Or was the first claim only about racing cars (and "fule")?

 

so how come my 2000 civic automatic has no egr valve? check one for
yourself.

dude, back in the days of carburetted F1, fuel /was/ dumped into
cylinders on /closed/ throttle to cool piston crowns. remember the
flame-back in the exhausts? that's /not/ done any more due to
consumption limits.

regarding modern injected vehicles, whether the ecu goes rich depends on
rpms. at low rpm's, the ecu goes rich to prevent flameout. but that's
not necessary at high rpms. fly by wire systems are much more
conservative with enrichment because throttle opening is contolled by
the ecu, not the drivers foot so less flameout.

 

Airline pilots have to adjust fuel mixtures to be able to fly at lesser
air densities. Otherwise the engine would run too lean. Cars soemtimes
do need adjustment too if they operate at high altitudes. They can
overheat when they arent set to the altitudes.