A low-emission gasoline engine structure

Abstract

The invention relates to a gasoline engine structure. According to the low-emission gasoline engine structure, the structure is simple, the improvement cost is low, the combustion is stable and full,the oil consumption can be reduced, the performance maintains to be stable in various working conditions, and the structure is energy-saving and environment-friendly; and the technical problems that in the prior art, the temperature of a cylinder head rises, a cold machine is difficult to start, floating occurs when a high speed is adopted, and the manufacturing cost is high are solved. The gasoline engine structure comprises a box body and a cylinder connected in the box body in a penetrating mode, and a crank is rotationally connected in the box body; a piston is slidably connected in the cylinder, and the crank is connected to the piston through a connecting rod in a rotating mode; and an annular scavenging passage is arranged on the inner side face, corresponding to the end face of thecrank, of the box body, a plurality of box body small holes are formed in the upper end face, which is in butt joint with the lower end face of the cylinder, of the box body, and the annular scavenging passage corresponding to the cylinder extends outwards and communicates with a cylinder scavenging passage corresponding to the lower end face of the cylinder through the box body small holes.

Description

technical field [0001] The invention relates to a gasoline engine structure, in particular to a low-emission gasoline engine structure with simple structure, low modification cost, reduced fuel consumption, stable performance under various working conditions, energy saving and environmental protection. Background technique [0002] With the strict restrictions on the emission value of gasoline engine products at home and abroad, the requirements for the design and manufacture of gasoline engines are getting higher and higher. The existing low-emission gasoline engines generally adopt small holes on the box body for scavenging, and the cylinder is usually designed as a double scavenging channel structure. The small holes opened on the box can increase the speed of the scavenging air flow and accelerate The scavenging speed reduces the escape of fresh gas, and achieves the purpose of reducing fuel consumption and reducing pollutant emissions to a certain extent, but the follow...

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Problems solved by technology

[0003] The present invention mainly provides a low-emission gasoline engine structure with simple structure, low modification cost, sufficient combustion stability, reduced fuel consumption, stable performance under various working conditions, energy saving and environmental protection, and solves the problems existing in the prior art. The temperature of the cylinder head rises, it is difficult to start the cold machine, it floats at high speed, and the technical problems of high manufacturing cost

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