Function of the Exhaust Valve?

[LeRiley]

The main functions of the exhaust valve are as follows: 1. It allows the exhaust gases from the car to be recirculated back into the cylinder for re-burning, and this small amount of exhaust gas reduces the temperature of the cylinder during the combustion process. 2. Nitrogen oxides are produced under high temperature and oxygen-rich conditions, so the exhaust valve suppresses the production of nitrogen oxides, thereby reducing the nitrogen oxide content in the exhaust gases. 3. When the accelerator reaches a certain opening degree, the exhaust valve will open, connecting the exhaust from the cylinder to the intake pipe, and then entering the cylinder again for cyclic combustion, ensuring complete combustion of the exhaust and purifying the air. Working principle of the exhaust valve: The high-pressure gas from the compressor, including gaseous working medium and lubricating oil, enters the exhaust valve and flows spirally along the guide vane. Through centrifugal force and gravity, the lubricating oil is separated from the working medium gas and accumulates along the inner wall of the cylinder. The working medium gas is discharged from the center pipe of the exhaust valve through multiple baffles. The separated lubricating oil is collected at the lower part of the oil separator and can be periodically discharged or automatically returned to the crankshaft box of the compressor via a float valve.