Mostly Plasticized Internal Combustion Engine Cylinder Heads

Abstract

The invention relates to a mostly plasticized cylinder head of an internal combustion engine, which comprises a cylinder head body, an air intake passage is provided on one side of the cylinder head body, and an exhaust passage is provided on the other side of the cylinder head body. , The exhaust passage is distributed with a cooling water jacket. The cylinder head body is divided into upper and lower parts from the exhaust passage side to the intake passage side. The upper part is a plastic cylinder head upper body, and the lower part is a metal cylinder head lower body. The upper part of the duct and the cooling water jacket is formed in the upper body of the cylinder head, and the joint surface of the upper body of the cylinder head and the lower body of the cylinder head is close to the dividing part of the intake duct and corresponding to the dividing surface of the cooling water jacket. There is a seal for simultaneously sealing air and cooling water structure. Compared with the existing technology, the design of effective use of engine cooling greatly increases the proportion of plastic in the cylinder head body, achieves the purpose of extreme weight reduction, and expands the application scenarios of plastics; the upper body of the cylinder head and the lower body of the cylinder head There is a sealing structure on the joint surface, which can seal air and cooling water at the same time, ensuring the stability of the seal and the reliability under variable temperature conditions.

Description

technical field [0001] The invention relates to the technical field of internal combustion engines, in particular to a mostly plastic cylinder head of an internal combustion engine. Background technique [0002] Due to the cooling and combustion of the engine, the cylinder heads of the existing piston internal combustion engines are all made of metal materials, mainly made of cast iron or cast aluminum materials. Cast iron is generally heavy in weight and low in cost, but its processing cost is high, and it is mostly used in diesel engines. Aluminum cylinder heads are widely used in gasoline engines. During the production and production of metal materials, the pollution and energy consumption of foundry factories are very large. In the later processing process, the metal cutting process is complicated and the sewage discharge is also large. Therefore, in recent years, it has been difficult for engine cylinder head casting and machining production plants to start constructio...

AI Technical Summary

Problems solved by technology

Cast iron generally has a large weight and low cost, but the processing cost is high, and it is mostly used in diesel engines

Aluminum cylinder heads are widely used in gasoline engines. During the production and production of metal materials, the pollution and energy consumption of foundry factories are very large. In the later processing process, the metal cutting process is complicated and the sewage discharge is also large.

Therefore, in recent years, it has been difficult for engine cylinder head casting and machining production plants to start construction in areas with strict environmental assessments.

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