The open exhaust valve allows the exhaust gases to escape the cylinder.
From the en.wikipedia.org
At the Hayes Spring four slightly guilty looking teenagers lingered around a carbon-dioxide exhaust valve near the spigot.
From the travel.nytimes.com
At the end of this stroke, the exhaust valve closes, the inlet valve opens, and the sequence repeats in the next cycle.
From the en.wikipedia.org
The exhaust valve opened for the piston upstroke.
From the en.wikipedia.org
It also has an overhead exhaust valve, surrounded by three spark plugs, and a fuel injector at the top of the combustion chamber.
From the post-gazette.com
On lap 294, a timing-chain failure allowed a too-late-closing exhaust valve to contact a piston and bring his last lap of the day, and the end to his 201st NASCAR race win.
From the en.wikipedia.org
The Focus engine also will have variable valve timing to adjust the intake and exhaust valve openings for maximum efficiency, yet the car also will accelerate quickly, the company said.
From the boston.com
A full oscillation of the Helmholtz resonance occurs before the exhaust valve is closed, and to increase low-speed torque, large-amplitude exhaust pressure waves are artificially induced.
From the en.wikipedia.org
A helmet or full face mask will automatically equalise as any pressure differential will either vent through the exhaust valve or open the demand valve and release air into the low pressure space.