Gasoline engine and air valve rocker assembly for same

Abstract

The invention discloses a gasoline engine and an air valve rocker assembly for the same. An air inlet valve rocker shaft is fixedly arranged on an air inlet valve rocker; the air inlet valve rocker shaft is unidirectionally arranged on an air inlet valve rocker base in a mode of rotating along the own axial line; an air exhaust valve rocker shaft is fixedly arranged on an air exhaust valve rocker; the air exhaust valve rocker shaft is unidirectionally arranged on an air exhaust valve rocker base in a mode of rotating along the own axial line; and the air inlet valve rocker shaft and the air exhaust valve rocker shaft are upward and slantways arranged relative to a horizontal plane from outside to inside. By adopting an inclined fixed rocker structure, the air valve rocker assembly cannot be shaken in a plurality of directions during long-time use, is suitable for inclined burning chambers and guarantees a sealing effect; furthermore, the gasoline engine has lower emission and higher power; the power of the gasoline engine with the maximum power of 7.5 kW (the rotating speed is 3,060 rpm) can be increased to 7.9 kW and the emission is reduced from 8.0 g / kW.h to 6.1 g / kW.h which meets or even exceeds a standard of 8 g / kW.h in the environmental protection agency (EPA)3 stage.

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 a cylinder, a crank linkage mechanism, a gas distribution system, an oil supply system, a lubrication system, and an ignition system; the cylinder head is provided with an intake port and an exhaust port, and forms a combustion chamber surface together with the cylinder, so it belongs to a 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. [0003] The gas distribution system of the gasoline engine is a necessary part to ensure the normal operation of the gasoline engine. It generally includes the intake valve and the exhaust valve on the cylinder head. The components are co...

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. Strict, inaccurate and unsmooth movements affect the normal operation of the gasoline engine

Moreover, the rocker arm axis parallel to the horizontal plane also has the problem of poor adaptability, especially for oblique valves, the existing rocker arm rotation direction is inconsistent with the valve action direction, resulting in bending moment, which will cause the valve to open and close. When the force is inconsistent with the running direction, it will affect the sealing effect

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