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Where is the exhaust gas valve located on a BMW 730?

1 Answers

McMalachi

07/29/25 7:38pm

The exhaust gas valve is adhesively bonded to the valve cover. Introduction to the exhaust gas valve: The exhaust gas valve, also known as the oil-gas 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 by separating oil and gas. Its function is to allow a portion of the exhaust gas to recirculate back into the cylinder for combustion. This small amount of exhaust gas reduces the combustion temperature in the cylinder and lowers the NOX content in the exhaust emissions. Consequences of a damaged exhaust gas valve: When the exhaust gas valve is damaged, it can cause the car to burn engine oil, resulting in blue smoke from the exhaust pipe. The exhaust gas valve serves to separate oil and gas. Under normal operation, it only draws in exhaust gas without sucking in oil. If the exhaust gas valve is damaged, it loses its oil-gas separation function, potentially drawing in oil along with the gas. This allows oil to enter the combustion chamber, leading to oil burning and blue smoke emission.

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