Natural gas engine cylinder cover and intake-exhaust seat ring integrated-forming structure

Abstract

The invention discloses a natural gas engine cylinder cover and intake-exhaust seat ring integrated-forming structure, relates to the technical field of engine cylinder covers, and aims to solve the problem that since an intake-exhaust seat ring and a cylinder body of an existing natural gas engine cylinder cover are of a separated structure, the intake-exhaust seat ring can fall off so as to cause accidents if the interference is improperly selected. An aluminum alloy casting shell is arranged on the outer wall of an engine cylinder cover body; two water outlet holes are formed in the upper surface of the engine cylinder cover body; a ladder type spark plug installation seat hole is formed in the middle of the upper surface of the engine cylinder cover body; four valve guide pipe seat holes are formed in the outer part of the ladder type spark plug installation seat hole; cross arm guide rod press-fitting holes are formed in two sides of the ladder type spark plug installation seat hole; and a high-strength graphite cast iron air cylinder sleeve is arranged on the lower surface of the engine cylinder cover body and is connected with the engine cylinder cover body in a welding way.

Description

technical field [0001] The invention relates to the technical field of engine cylinder heads, in particular to an integrally formed structure of a natural gas engine cylinder head and intake and exhaust seat rings. Background technique [0002] The cylinder head is mounted on top of the cylinder block, sealing the cylinder from above and forming the combustion chamber. It is often in contact with high-temperature and high-pressure gas, so it bears a large thermal load and mechanical load. The cylinder head of the water-cooled engine is equipped with a cooling water jacket. The cooling water hole on the lower end surface of the cylinder head communicates with the cooling water hole of the cylinder block, and the circulating water is used to cool the high temperature parts such as the combustion chamber. The cylinder head is also equipped with intake and exhaust valve seats, valve guide holes for installing intake and exhaust valves, as well as intake passages and exhaust pas...

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide a natural gas engine cylinder head and an integral molding structure of the intake and exhaust seat rings, so as to solve the problem that the intake and exhaust seat rings and the cylinder body of the existing natural gas engine cylinder head proposed in the above-mentioned background technology are separate structures, If the interference is not selected properly, it will fall off and cause an accident.

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