Gasoline engine air inlet channel

Abstract

The invention discloses a gasoline engine air inlet channel which comprises a main air channel. An air inlet is formed in one end of the main air channel, two air distribution channels extend from theother end of the main air channel in a forked mode, and air outlets are formed in the tail ends of the air distribution channels. The inner walls, close to the air outlets, of the air distribution channels are provided with one or more first attachment parts protruding outwards so that the area of the sections where the first attachment parts in the air distribution channels are located can be increased sharply. The flow coefficient of the gasoline engine air inlet channel is increased. The inner walls of the air distribution channels are provided with air guide faces and warped faces opposite to the air guide faces, airflow enters a cylinder along the air guide faces and rotates in the cylinder, the warped faces are bent towards the direction where the air guide faces are located, therefore, the phenomenon that the airflow enters the cylinder along the warped faces is greatly reduced, the phenomenon that airflow entering the cylinder along the warping faces interferes with rotation of the airflow entering the cylinder along the air guide faces is avoided, and finally the tumble ratio of the gasoline engine air inlet channel is increased.

Description

technical field [0001] The invention relates to the technical field of gasoline engines, in particular to an intake port of a gasoline engine. Background technique [0002] The structure of the intake port of the engine cylinder head has a great influence on the performance. There are two important parameters to evaluate the quality of the intake port of the gasoline engine, namely the flow coefficient and the tumble ratio. In order to obtain a larger intake air volume, a larger flow coefficient is required, and a larger tumble flow ratio is required for faster and more complete combustion in the cylinder. When designing the inlet port of many models, they hope to have a large flow coefficient while having a large tumble ratio, but these two aspects are mutually restrictive. A high flow coefficient requires the air passage to be as straight as possible, while a high tumble flow requires The gas rotates as much as possible, so increasing the tumble ratio will inevitably redu...

AI Technical Summary

Problems solved by technology

[0003] The main purpose of the present invention is to provide an engine intake port, which aims to solve the problem in the prior art that when the high tumble flow ratio of the engine intake port is increased, the flow coefficient will be greatly reduced

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