An Efficiently Cooled Four-Valve Engine Cylinder Head

Abstract

The invention provides an efficient cooling type four-air-valve engine air cylinder cover. The efficient cooling type four-air-valve engine air cylinder cover comprises a body, wherein the body is internally provided with an upper water jacket and a lower water jacket; an oil spraying device mounting hole is formed in the center of the body; an oil spraying device sleeve is arranged in the oil spraying device mounting hole; the oil spraying device sleeve vertically penetrates through the centers of the upper water jacket and the lower water jacket; four air paths are arranged in the body around the oil spraying device mounting hole; the upper water jacket and the lower water jacket, and the four air paths are completely isolated; the lower water jacket is communicated with a cooling water inlet pipe through water inlet holes formed in the outer sides of the four air paths; the upper water jacket is communicated with a cooling water outlet pipe through a water outlet hole; the upper water jacket and the lower water jacket are communicated with a water flow channel located at the center of the body; in the lower water jacket, a middle water baffle is arranged between the oil spraying device sleeve and an outer wall of a certain air path close to the water inlets. According to the efficient cooling type four-air-valve engine air cylinder cover, all heat key regions of the lower water jacket are connected in series through the air cylinder cover; the efficient cooling type four-air-valve engine air cylinder cover has the advantages of high water flow utilization rate, good cooling effect and excellent utilization effect.

Description

technical field [0001] The invention relates to an efficient cooling four-valve engine cylinder head, which belongs to the technical field of engine components. Background technique [0002] Medium and heavy-duty diesel engines are facing serious cylinder head thermal fatigue failure problems. How to improve the thermal fatigue resistance of the cylinder head has become the key point in the design of the cylinder head of medium and heavy duty diesel engines. [0003] Chinese invention patent (authorized announcement number: CN 101413459 B, authorized announcement date: September 1, 2010, name: high-strength cylinder head with double-layer water flow channels) discloses an engine cylinder head, the cylinder head on the upper roof There are fuel injector installation holes between the cylinder head and the lower base plate, several air passages are opened around the fuel injector installation holes in the cylinder head, water inlet holes are opened on the lower base plate, an...

AI Technical Summary

Problems solved by technology

However, the cylinder head of this structure cannot effectively guide the cooling water. The water flow channels in each thermally critical area are parallel channels, and all the cooling water entering the cylinder head is directly collected in the central area after flowing through its adjacent thermally critical area. , entering the upper water cavity from the middle connecting hole, this design has the defects of low water flow utilization rate, poor overall cooling effect, and poor use effect

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