Cooling water jacket for diesel engine

Abstract

The invention provides a cooling water jacket for a diesel engine. The cooling water jacket comprises a cylinder body, an air cylinder body water jacket, a piston, an air cylinder cover and an air cylinder cover water jacket; an air cylinder sleeve is arranged in the cylinder body, the air cylinder body water jacket is arranged on the outer side of the air cylinder sleeve, and the air cylinder body water jacket comprises a column body cold water cavity and a cooling pipe; the piston is arranged in the air cylinder sleeve, the air cylinder cover is arranged at the top end of the cylinder body,and the air cylinder cover water jacket is arranged in the position, directly facing a combustion chamber, of the air cylinder cover; and a water inlet hole is formed in the side wall of the air cylinder cover. According to the cooling water jacket, the high-temperature air cylinder sleeve and piston can be cooled through the air cylinder body water jacket, the cooling effect is good, the situation of cylinder breaking caused by uneven cooling can be avoided, the working efficiency of the diesel engine is improved, and the service life of the diesel engine is prolonged; and the combustion chamber can be cooled through the air cylinder cover water jacket, meanwhile, the uniformity of heat dissipation and cooling can be improved through an annular cold water cavity, a first annular cooling pipe and a second annular cooling pipe, and the situation of breaking of the air cylinder cover due to the local overheating or overcooling situation can be avoided.

Description

technical field [0001] The invention relates to the field of diesel engines, in particular to a cooling water jacket for diesel engines. Background technique [0002] An internal combustion engine is a kind of power machinery. It is a heat engine that directly converts the heat energy released into power by burning fuel inside the machine. The common ones are diesel engines and gasoline engines. [0003] When the existing diesel engine is working, the temperature of the gas in the cylinder can be as high as 1727-2527 degrees Celsius. If it is not cooled in time, the temperature of the parts of the diesel engine will be too high, especially the parts that are directly in contact with the high-temperature gas will be affected by thermal expansion. The matching clearance of the diesel engine will cause the moving parts to be blocked or even stuck, and the high temperature will also cause the mechanical strength of the diesel engine parts to decrease, making the lubricating oil ...

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Problems solved by technology

[0003] When the existing diesel engine is working, the temperature of the gas in the cylinder can be as high as 1727-2527 degrees Celsius. If it is not cooled in time, the temperature of the parts of the diesel engine will be too high, especially the parts that are directly in contact with the high-temperature gas will be affected by thermal expansion. The matching clearance of the diesel engine will cause the moving parts to be blocked or even stuck, and the high temperature will also cause the mechanical strength of the diesel engine parts to decrease, making the lubricating oil lose its effect. The phenomenon of uneven cooling will cause stress and strain in the diesel engine, and the cylinder liner of the diesel engine will easily cause the collapse of the cylinder, causing danger

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