Air valve, air cylinder cover and engine

Abstract

The invention discloses an air valve. The air valve comprises a vortex generation air valve body, wherein the vortex generation air valve body comprises a first rod part and a first head part which are fixed to each other; the first head part is provided with a plurality of vortex generation holes which can be closed correspondingly; the vortex generation holes are formed in the circumferential direction of the first head part; and the vortex generation holes have preset rotation angles. According to the air valve, airflow is rotated to form vortexes through the vortex generation holes in thevortex generation air valve body, and the vortexes can be matched with a spiral air channel to generate spiral airflow with higher strength and higher vortex ratio. Compared with the mode that vortexes are generated only through a spiral air channel in the prior art, the shape limitation to the spiral air channel can be reduced, the vortex ratio of the spiral air channel is reduced, the flow coefficient of the spiral air channel is increased, the flow loss of gas in the air inlet process can be reduced, and the fuel consumption of an engine can be reduced. The invention further provides an aircylinder cover applying the air valve and the engine applying the air cylinder cover.

Description

technical field [0001] The invention relates to the technical field of machinery industry, more specifically, to a valve, a cylinder head, and an engine. Background technique [0002] The importance of high-performance air intakes in engines continues to increase as emissions regulations and fuel consumption requirements continue to rise. Under the premise of satisfying a certain vortex ratio, the intake port should minimize the flow loss and increase the intake air flow coefficient. [0003] see figure 1 with figure 2 , the intake port of the existing cylinder head is a typical combination of the tangential air channel 1 and the spiral air channel 2, and the tangential air channel 1 and the spiral air channel 2 share an air intake port. This arrangement can meet the airway needs in most cases. [0004] However, although the above air inlet can realize the integration of the tangential airflow and the helical airflow into a large vortex (that is, the gas performs a larg...

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Problems solved by technology

[0004] However, although the above air inlet can realize the integration of the tangential airflow and the helical airflow into a large vortex (that is, the gas performs a large-scale swirling movement around the center of the cylinder), it is also necessary to limit the shape of the helical air passage 2 so that Generate a spiral airflow of sufficient strength, resulting in a low flow coefficient of the spiral air passage 2, and a large flow loss of gas during the intake process, which is not conducive to further reducing the fuel consumption of the engine

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