on which stroke does the exhaust vavle open and close
2007-10-01 06:28:23 · 6 answers · asked by Anonymous in Cars & Transportation ➔ Maintenance & Repairs
Open's on 4 closes at 1.
1. Intake
2. Compression
3. Power
4. Exhaust
** I'm not sure how what I said is any different from JJ's answer. After 4 you go back to 1. Therefore its closed from 1-3. Please enlighten me?**
2007-10-01 06:32:37 · answer #1 · answered by Anonymous · 1⤊ 0⤋
Exhaust valves start to open when your piston travel about 75% on the down stroke of ignition cycle, and begin to close in about 75% of the up stroke of the Exhaust cycle. (this apply to 4 stroke cycle engine)
2007-10-01 13:37:28 · answer #2 · answered by partsman 2 · 0⤊ 0⤋
The next up stroke after the power stroke it opens. At the completion of that stroke it closes and the intake valve opens.
2007-10-01 14:05:26 · answer #3 · answered by Alanrt1 4 · 0⤊ 0⤋
Actually, unlike Josh said, the exhaust valve opens on exhaust and remains shut thru the other 3 cycles,
2007-10-01 13:37:08 · answer #4 · answered by Anonymous · 0⤊ 0⤋
The exhaust stroke.
Intake, compression, ignition, exhaust
2007-10-01 13:36:32 · answer #5 · answered by puppets48744 4 · 0⤊ 0⤋
http://en.wikipedia.org/wiki/Four-stroke_cycle
2007-10-01 13:41:37 · answer #6 · answered by Mr. KnowItAll 7 · 0⤊ 0⤋