The role of the exhaust valve is to stabilize the propulsion pressure of the turbocharger system to protect the engine and turbocharger. The exhaust valve is controlled by the exhaust valve actuator, which in turn is controlled by the pressure in the intake manifold.
Working principle In the exhaust state, the buoy will pull down one end of the lever due to the action of gravity, and the lever is in an inclined state at this time; there is a gap in the contact part between the lever and the exhaust hole, and the air is discharged from the exhaust hole through this gap; With the discharge of air, the water level rises, the buoy floats upward under the action of the buoyancy of the water, and the sealing end face on the lever gradually presses the exhaust hole until the entire exhaust hole is completely blocked; the exhaust valve is completely closed at this time. state.
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