Air cylinder cover of automobile engine

Abstract

The invention discloses an air cylinder cover of an automobile engine. The air cylinder cover comprises air inlet channels, exhaust channels, an exhaust manifold, a water jacket and a combustion chamber. The air inlet channels and the exhaust channels are connected with the combustion chamber. A combustion chamber step structure is arranged in the combustion chamber, and combustion chamber steps are arranged at the positions, facing the upper portion of the combustion chamber, of seat ring holes. According to the technical scheme, the air inlet channels and the combustion chamber are optimized, and therefore the low-speed tumble ratio is increased, in-cylinder combustion is improved, and the wall wetting condition is reduced to the largest degree; oil consumption is reduced, and particle emissions are reduced; branches of the exhaust channels of all cylinders are slightly lengthened and are finally gathered to a general branch, and an assembly type exhaust manifold is omitted; the exhaust manifold is integrated on a cylinder cover body, exhaust heat is fully utilized, the temperature of the engine is increased fast, and driving and taking comfort is improved; the complete engine frictional work is reduced, and therefore oil consumption of the complete engine is reduced; and by means of the water jacket structure, the water flow manner is adjusted, the temperature field of the cylinder cover body and the part integrated with the exhaust manifold is improved, and the cylinder cover body and the exhaust integration structure are fully cooled.

Description

technical field [0001] The invention belongs to the technical field of automobile engine structure. More specifically, the present invention relates to an automotive engine cylinder head. Background technique [0002] In order to cope with the more stringent Euro VI emission regulations and the requirements of low fuel consumption and high performance in 2020, a gasoline engine with direct injection supercharged integrated exhaust manifold (IEM) is considered a reasonable solution. [0003] In order for this engine to be widely used, it is necessary to further optimize the engine downsizing system while carefully balancing durability, cost, etc. For automobile engines, energy saving and environmental protection are always the goals pursued by autobots and the basis for human survival. And with the development of science and technology, the population continues to increase, and the problem of energy shortage is urgent. Therefore, it is very important to design a product th...

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Problems solved by technology

[0006] However, at present, the domestic OEMs are still at the level of the current Euro 5, relentlessly sacrificing the economy in order to improve the power performance

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