Where is the exhaust gas valve on the Passat B5?

1 Answers
MacBella
07/29/25 12:07pm
The exhaust gas valve on the Passat B5 is located near the engine intake pipe, installed between the compressor outlet and the condenser inlet. You can find it by opening the engine hood. All car engines are equipped with an exhaust gas valve, which is a component of the crankcase ventilation system. Below are relevant details about the exhaust gas valve: The exhaust gas 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. Working principle of the exhaust gas valve: High-pressure gas (gaseous working medium and lubricating oil) discharged from the compressor enters the exhaust gas valve and flows through the guide vanes in a spiral pattern. The lubricating oil is separated from the working medium gas by centrifugal force and gravity, flowing down along the inner wall of the cylinder. The working medium gas is discharged from the center pipe of the exhaust gas valve through multiple baffles. The separated lubricating oil accumulates at the bottom of the oil separator and can be periodically drained or automatically returned to the compressor's crankcase via a float valve.
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