High position cooling water jacket structure of compound air cylinder cover

Abstract

The invention discloses a high position cooling water jacket structure of a compound air cylinder cover. The structure is arranged in the compound air cylinder cover. The compound air cylinder cover comprises a cylinder hole, an oil atomizer located on the top of the cylinder hole and a nose bridge area around the oil atomizer. The high position cooling water jacket structure comprises an upper water jacket, a middle water jacket, a middle water hole, a lower water jacket and a lower water hole. The upper water jacket is arranged on the upper part of the compound air cylinder cover, the middlewater jacket is arranged below the upper water jacket, the middle water hole is formed between the upper water jacket and the middle water jacket and surrounds the oil atomizer, and the lower water jacket is arranged around the periphery of the cylinder hole; and the lower water hole is formed between the bottom of the middle water jacket and the top of the lower water jacket. The high position cooling water jacket structure disclosed by the invention can meet the cooling demand of an acting high heat area under the circumstance of not increasing a special cooling structure.

Description

technical field [0001] The invention relates to the field of internal combustion engines, in particular to a high-level cooling water jacket structure of a composite cylinder head. Background technique [0002] The traditional cooling sequence of the cylinder head of the engine block is to cool the body first and then the cylinder head. After the cooling water takes away the heat around the cylinder bore, the temperature rises accordingly, and the high-temperature cooling water then flows into the cylinder head to cool the nose bridge area and other areas. The upper part of the cylinder bore of the engine (the high-heat area of ​​the work) and the nose bridge area of ​​the cylinder head are areas of high heat load, so the two key parts need to be fully cooled. The cooling water enters the water jacket of the cylinder hole first, which can cool the upper part of the cylinder well, but when the cooling water is raised by the cylinder hole and then further cools the nose bridge...

AI Technical Summary

Problems solved by technology

[0003] Therefore, the traditional cooling technology has the following defects: the cooling efficiency of the traditional cooling method is low, and the heat load increases when the engine power is increased, and the traditional cooling method cannot satisfy the cooling of the high-heat area of ​​the work.

The temperature of the cooling water will rise from the cylinder bore to the cylinder head. In order to cool the nose bridge area, it is necessary to add a special cooling structure for forced cooling. The structure is complicated and the manufacturing cost is increased.

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