CHECK VALVE [WITHOUT CYLINDER DEACTIVATION (SKYACTIV-G 2.0, SKYACTIV-G 2.5)]
id0116m1196900
Purpose, Function
• The check valve maintain the pressure in the fuel tank at constant pressure.
Construction
• The check valve is installed to the side of the charcoal canister.
• Mainly consists of valve, umbrella, and spring.
Operation
• The valve moves in response to the difference in air pressure between the fuel tank side and the atmospheric side, thereby changing the path of airflow.
• When the pressure in the fuel tank becomes negative due to fuel consumption or other factors, the path opens, drawing atmospheric air into the fuel tank.
