Gasoline engine oblique valve cylinder head

Abstract

The invention discloses an obliquely-arranged valve cylinder head of a gasoline engine. The obliquely-arranged valve cylinder head comprises a cylinder head body, a gas inlet path and a gas exhaust path, where the gas inlet path and the gas exhaust path are arranged in the cylinder head body. A gas inlet door is arranged on the cylinder head body and corresponds to the gas inlet path. A gas exhaust door is arranged on the cylinder head body and corresponds to the gas exhaust path. The top of the gas inlet door inclines towards the gas inlet path side. The top of the gas exhaust door inclines towards the gas exhaust path side. An included angle between the axis of the gas inlet door and the axis of the gas exhaust door is less than or equal to 35 degrees. Due to the facts that the top of the gas inlet door inclines towards the gas inlet path side and the top of the gas exhaust door inclines towards the gas exhaust path side, gas inlet and exhaust resistance can be reduced, and gas inlet efficiency is improved. The power of the gasoline engine is improved, the emission of the gasoline engine is lowered, and meanwhile, installation with other components on the cylinder head body has good adaptability so that the arrangement of the other components cannot be affected. The included angle between the axis of the gas inlet door and the axis of the gas exhaust door is less than or equal to 35 degrees, and therefore a sufficient angle of inclination can be ensured, and smooth gas inlet and gas exhaust can be guaranteed. Meanwhile, the situations that a sufficient width is formed between the gas inlet door and the gas exhaust door, and a nose bridge area has a sufficient width are also ensured. The obliquely-arranged valve cylinder head of the gasoline engine has a better cooling effect.

Description

technical field [0001] The invention relates to a power machine part, in particular to a gasoline engine part. Background technique [0002] Gasoline engine is a kind of power machinery that uses gasoline as fuel. It is composed of cylinder, crank connecting rod mechanism, gas distribution system, oil supply system, lubrication system and ignition system. The intake port and the exhaust port are arranged in the cylinder head, and together with the cylinder, they form the combustion chamber surface, so they belong to the more important parts of the gasoline engine. The valve assembly is an important part on the cylinder head, which is used to supply the gas mixture to the combustion chamber and discharge the exhaust gas. The valve of the valve assembly is arranged on the cylinder head, which is used to open and close the intake passage and the exhaust passage, adapt to the intake, combustion work and exhaust in the combustion chamber, and maintain the normal operation of the...

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Problems solved by technology

[0003] In the prior art, the valve setting mainly considers the convenience of the cylinder head arrangement, which is generally perpendicular to the intake port and exhaust port, which increases the intake and exhaust resistance and affects the intake and exhaust efficiency, thereby affecting the full combustion of the mixed gas in the combustion chamber. Reduce gasoline engine efficiency, affecting emissions

In order to solve the above problems, some cylinder heads of gasoline engines adopt oblique valve settings, which can reduce the intake and exhaust resistance, but for gasoline engines, the arrangement of intake and exhaust valves on the cylinder head has limitations, and the use of oblique valves will increase The layout range of the valve, meanwhile, affects the layout of other components

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