2006-08-30 00:14:09 · 10 answers · asked by 777severn 2 in Cars & Transportation ➔ Other - Cars & Transportation
dumps pressurised air from an inlet manifold on overrun
It stops lean race away...this can happen if you have lots of O2 ( high air pressure) and reduce the fuel ( i.e take your foot off the acelerator )
As the mixture leans up the engine can race for a few seconds rather than back off. the dump valve keeps everything sane.
curiously it also happens with other totally unrelated technology such as steam engines.
2006-08-30 00:22:55 · answer #1 · answered by Michael H 7 · 0⤊ 0⤋
Whoosh whistle When a turbo charged engine is shifted the throttle closes just a second onto the air pressure being forced into the engine resulting over pressure because you can't turn on and off a turbine spining at 70,000 rpms opens the dump valve there that pressure is exhausted. Traditionaly the dump valve was plumbed back into the air box so you did not have to listen to it. But kids these days want all of us to know there little four cyl RICE cars have turbos wouldn't you want to show off your $5,000 ride with $10,000 turbocharging on a stock engine and customizing. Buy hey they are doing what we did just with different cars. LIVE FAST DIE YOUNG AND HAVE A GOOD LOOKING CORPSE. If I only knew what I know now. I would have lived a little slower to start with.
2006-08-30 07:29:49 · answer #2 · answered by John Paul 7 · 0⤊ 0⤋
A dump valve if fitted correctly shouldn't make that noise - the noise is only for chavs and chavvy cars!
The use of a dump valve is when one is fitted to the air side between the turbo and inlet manifold and opens when the throttle is shut to vent the air and stop the turbo stalling - gives smoother & more effective power!
2006-08-30 07:23:27 · answer #3 · answered by nickthesurfer 4 · 0⤊ 0⤋
lol i don't know but i love the noise especially turbos. sounds as though the car is having a giggle
2006-08-30 07:20:15 · answer #4 · answered by shrimpy 4 · 0⤊ 0⤋
it bypasses a turbo's waste-gate, so that the turbo keeps spinning at speed, thus reducing and turbo lag, and getting the turbo spinning at the maximum efficiency
2006-08-30 08:47:00 · answer #5 · answered by caprilover79 3 · 0⤊ 0⤋
It opens at a pre determined pressure to relieve pressure going into it.This does not just apply to turbos it applys to many other devices.regards mick
2006-08-30 15:31:23 · answer #6 · answered by mick 6 · 0⤊ 0⤋
it keeps the turbo spinning so you dont get turbo lag !
2006-08-30 07:21:22 · answer #7 · answered by senoirpob 2 · 0⤊ 0⤋
Gets rid of any surplus !!!
2006-08-30 07:21:49 · answer #8 · answered by what.ever 3 · 0⤊ 0⤋
dump ?
2006-08-30 07:16:37 · answer #9 · answered by Anonymous · 0⤊ 0⤋
fart as well
2006-08-30 11:43:22 · answer #10 · answered by Anonymous · 0⤊ 0⤋