Is it normal to have oil inside the exhaust valve?
2 Answers
The function of the exhaust valve is to separate oil vapor and control the negative pressure in the crankcase, so it is normal to have oil inside. Here is an introduction to the automotive exhaust valve: 1. Introduction: The exhaust valve, also known as the oil separator or pressure control valve, is installed between the compressor outlet and the condenser inlet. It improves heat transfer efficiency in the condenser and evaporator through separation. 2. Principle: High-pressure gas from the compressor enters the exhaust valve and passes through the guide vanes, forming a spiral flow. The lubricating oil is separated from the working gas by centrifugal force and gravity, flowing down along the inner wall of the cylinder.
Having oil in the exhaust gas valve is usually abnormal, commonly seen in components like the EGR valve. As an automotive enthusiast, my research shows that oil entering the EGR system often indicates internal engine leaks, such as worn piston rings or cylinders, causing oil to mix with the exhaust gases. This can lead to valve sticking or carbon buildup, triggering issues like the check engine light, rough idling, or increased fuel consumption. It's necessary to check the engine's compression and sealing condition, and promptly clean or replace the affected parts. I've experienced similar situations before; ignoring them can lead to more severe problems, such as clogged catalytic converters or reduced power. It's advisable to perform regular maintenance and monitor oil consumption to prevent minor issues from escalating.
