Cylinder head cover of integrated active PCV valve

By integrating the cylinder head cover with an active PCV valve and using the drive unit to adjust the intake cross-sectional area, the problems of abnormal noise and poor exhaust of the traditional PCV valve are solved, achieving more precise flow control and environmentally friendly exhaust effects.

CN223410923UActive Publication Date: 2025-10-03CHONGQING SOKON POWER CO LTD
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Patent Information

Application Number
CN202422919980.7
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-11-28
Publication Date
2025-10-03
Estimated Expiration
2034-11-28

AI Technical Summary

Technical Problem

Traditional PCV valves are prone to abnormal noise problems under idle conditions, and under certain conditions, they are unable to discharge crankcase gas in time, resulting in increased crankcase pressure and environmental pollution.

Method used

The cylinder head cover uses an integrated active PCV valve. The drive unit drives the valve plate to rotate to adjust the cross-sectional area of ​​the intake port. The valve core and spring are eliminated, and the opening and closing of the intake port are controlled by the motor and drive shaft to achieve flexible and precise control of the flow rate.

Benefits of technology

It eliminates the abnormal noise problem caused by pressure difference fluctuation, ensures the timely discharge of crankcase gas, avoids environmental pollution, and improves the accuracy and stability of flow control.

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Abstract

The utility model discloses a cylinder head cover integrated with an active PCV valve, which comprises a cylinder head cover body, a gas channel arranged in the cylinder head cover body and the PCV valve arranged at a gas inlet of the gas channel, the PCV valve comprises a valve plate arranged on the outer side of the gas inlet, and the valve plate is fixedly connected with a driving unit. The driving unit drives the valve plate to rotate to adjust the sectional area of the air inlet. The sectional area of the air inlet (namely the size of the air inlet and the opening and closing of the air inlet) is directly adjusted through the valve plate, a valve element and a spring of a traditional PCV valve are omitted, and the problems that when an engine operates under the idling working condition, the rotating speed of the engine is unstable, the pressure fluctuation of an air inlet manifold is large, and the service life of the engine is prolonged are solved. Abnormal sound caused by frequent impact between the valve core and the valve body due to pressure difference fluctuation is solved; by arranging the driving unit, the valve plate can be actively driven to rotate to adjust the sectional area of the air inlet, the influence of differential pressure fluctuation on the flow of the PCV valve is eliminated, and the flow can be controlled more flexibly and more accurately.
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