combustion chamber of gasoline engine

Abstract

The invention discloses a combustion chamber of a gasoline engine. The combustion chamber of the gasoline engine comprises a gas feeding door, a gas exhausting door and an ignition plug, wherein the ignition plug is arranged in a combustion cavity and is close to the gas exhausting door; and height fall is formed between the gas feeding door and the gas exhausting door; a gas flow channel which is connected with the ignition plug is arranged between the gas feeding door and the gas exhausting door; the gas feeding door is connected with the gas exhausting door via the gas flow channel; the combustion chamber is formed in a cylinder cover in a recessed manner; and the maximum cross section of the combustion chamber is positioned on the bottom of the cylinder cover. The combustion chamber of the gasoline engine has the advantages that the use ratio of fresh and combustible mixed gas can be increased, and flame spreading rate and the dynamic property of the gasoline engine are improved; an inflating effect is high, the mixed gas is combusted sufficiently, movement of air in the cylinder can be fine, and lean combustion or layer combustion is adapted; and the position of the gas exhausting door is lifted up so that position fall between the gas exhausting door and the gas feeding door is formed, local heating of gas is convenient to implement, turbulent motion of air in the cylinder is promoted, a good combustion process can be fine, recirculation of exhaust gas in the combustion chamber is facilitated, and emission of NOx is reduced.

Description

technical field [0001] The present invention relates to a combustion chamber for an internal combustion engine, more particularly, the present invention relates to a combustion chamber of a gasoline engine with a new structure. Background technique [0002] Those skilled in the art know that the air movement in the cylinder of an internal combustion engine has a decisive impact on the formation of the mixture and the combustion process, and thus affects the power, economy, combustion noise and harmful exhaust emissions of the engine. Therefore, well-organized in-cylinder air movement plays an extremely important role in improving the flame propagation rate of gasoline engines, reducing combustion cycle fluctuations, and making it suitable for lean combustion or layer combustion. [0003] The combustion chamber of the internal combustion engine in the prior art has a basic structure of bathtub type or hemispherical shape, that is, a structure with regular shape. Although the ...

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Problems solved by technology

[0003] The combustion chamber of the internal combustion engine in the prior art has a basic structure of bathtub type or hemispherical shape, that is, a structure with regular shape. Although the combustion chamber of this structure is widely used, it has low economic efficiency, weak turbulent flow motion and exhaust gas pollutant discharge. advanced questions

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