Self-adjusting exhaust valve

Abstract

The self-adjusting exhaust valve comprises a valve head, a valve rod, a valve seat, a valve sleeve and an elastic piece, the valve seat comprises a seat sleeve sleeve, a seat ring connected to the inner circle of the seat sleeve and a blade connected to the inner circle of the seat sleeve, the blade is located above the seat ring, and the valve rod is axially sleeved with the seat ring in a sealing and sliding mode. The seat ring sleeve is connected to the inner circle of the valve sleeve in a threaded mode, a plurality of spraying holes are vertically formed in the seat ring, and the spraying holes are located under the blades, so that gas leaked by the piston cylinder is sprayed to the blades through the spraying holes, the valve seat is driven to rotate relative to the valve sleeve, and then the valve seat is lifted. When high-pressure gas leaks through the gap between the valve head and the valve sleeve, the leaked high-pressure gas is sprayed out through the spraying holes to impact the blades and drive the valve seat to rotate and move upwards, then the distance between the upper end of the valve rod and the seat ring is reduced, the reset elastic force of the valve rod is increased, and the valve head can be sealed again.

Description

technical field [0001] The invention relates to the technical field of engines, in particular to a self-adjusting exhaust valve. Background technique [0002] In the exhaust valve of the existing engine, the elastic force of the spring is easily attenuated during the long-term use, which is easy to cause the sealing performance of the exhaust valve to be weakened when the exhaust valve is closed. Air leakage is easy to occur, resulting in poor engine economy and poor power performance; SUMMARY OF THE INVENTION [0003] In view of this, the present invention provides a self-adjusting exhaust valve. When the sealing performance of the exhaust valve is weakened and the air leaks, the reset elastic force of the impact elastic member of the leaking gas is used to improve the sealing performance of the exhaust valve. [0004] The self-adjusting exhaust valve of the present invention includes a valve head and a valve stem connected to the valve head, and also includes a valve se...

AI Technical Summary

Problems solved by technology

[0002] For the exhaust valve of the existing engine, the elastic force of the spring tends to attenuate during long-term use, which easily causes the sealing performance of the exhaust valve to weaken when it is closed. At this time, during the compression stroke and power stroke of the engine, the piston cylinder exhaust port Air leakage is prone to occur, resulting in poor engine economy and poor power performance;

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