Cylinder end with multi-spherical surface combustion chamber and gasoline engine thereof

Abstract

The invention discloses a cylinder end with a multi-spherical surface combustion chamber and a gasoline engine thereof. The cylinder end comprises a cylinder end body, an intake passage, an exhaust passage and a spark plug-mounting hole, the intake passage, the exhaust passage and the spark plug-mounting hole are arranged in the cylinder end body, a combustion chamber surface is formed on the inner side of the cylinder end body, three spherical surfaces are sequentially tangent to one another to form the combustion chamber surface, and are a spherical surface I, a spherical surface II and a spherical surface III sequentially from the bottom to the top, the radius of the spherical surface II is greater than the radius of the spherical surface I, and the radius of the spherical surface III is greater than the radius of the spherical surface II. The cylinder end is favorable for the mixture of combustion gas, the entering gas flow can receive resistance in different directions, consequently, the fuel mixture can better generate turbulence, combustion is more sufficient, and thereby the power of the gasoline engine can be effectively increased; meanwhile, intake resistance and exhaustresistance are decreased, consequently, gas inlet and exhaust are more smooth, the fuel consumption rate and emission are decreased, the power can be increased by about 20W, the fuel consumption rateis decreased by about 5 percent, and emission reaches the standard of 8g / kW.h at the EPA3 level; and therefore the increase of the power of the gasoline engine and the decrease of emission are more remarkable.

Description

technical field [0001] The invention relates to a power machine component and its application, in particular to a gasoline engine component and its application. Background technique [0002] A gasoline engine is a power machine that uses gasoline as fuel. It is composed of cylinder, crank linkage mechanism, gas distribution system, oil supply system, lubrication system and ignition system; the cylinder head is provided with intake passage and exhaust passage, and forms the combustion chamber surface together with the cylinder, so it belongs to gasoline engine more important parts. Gasoline is burned as a mixture of fuel and air in the combustion chamber to generate a large amount of heat, which is used as driving energy. The parameters of the combustion chamber are the necessary conditions to ensure the efficient operation of the gasoline engine. [0003] In the prior art, the combustion chamber surface of the cylinder head generally adopts a wedge-shaped structure, which...

AI Technical Summary

Problems solved by technology

Due to the large contact surface between the cylindrical seat and the rocker shaft, and the influence of machining accuracy, installation accuracy and long-term friction, the structure will shake in multiple directions after long-term operation, resulting in the failure of the existing intake and exhaust valve assemblies to close. Strictness, inaccuracy and unsmooth movement, especially for spherical combustion chambers, the rocker arm structure affects the normal operation of spherical combustion chambers, cannot give full play to its advantages, cannot be adapted to the use of spherical combustion chambers, and affects the normal operation of gasoline engines

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