Is It Normal to Have Oil in the Exhaust Valve?
1 Answers
The function of the exhaust valve is to separate oil vapor and control the negative pressure in the crankcase, so having oil inside is normal. Here is a detailed introduction to the exhaust valve: 1. The exhaust valve, also known as an oil separator or pressure control valve, is installed between the compressor outlet and the condenser inlet. Through separation, it improves the heat transfer effect in the condenser and evaporator. Its role is to allow automotive exhaust gases to re-enter the cylinder for combustion, and this small amount of exhaust gas reduces the temperature during cylinder combustion and also lowers the NOX content in the exhaust. 2. Working principle of the exhaust valve: The high-pressure gas from the compressor, along with the gaseous working medium and lubricating oil, enters the exhaust valve and then the guide vanes. It flows in a spiral pattern along the guide vanes, and through centrifugal force and gravity, the lubricating oil is separated from the working medium gas. The oil flows down along the inner wall of the cylinder, while the working medium gas is discharged through the central pipe via multiple baffles. The separated lubricating oil collects at the bottom of the oil separator and can be periodically drained or automatically returned to the compressor's crankcase using a float valve.
