Diesel engine air cylinder cover

Abstract

The invention provides a diesel engine air cylinder cover. The diesel engine air cylinder cover comprises an air cylinder cover (1), an air inlet door (7), an air outlet door (4), an air inlet channel (6), an air outlet channel (3) and an air cylinder cover bottom plane (5). The air inlet door (7) is arranged on the air cylinder cover bottom plane (5). The air inlet channel (6) is communicated with the air inlet door (7) and the air cylinder cover (1). The air outlet door (4) is arranged on the air cylinder cover bottom plane (5). The air outlet channel (3) is communicated with the air outlet door (4) and the air cylinder cover (1). The air cylinder cover bottom plane (5) is further provided with an inclined wedge surface (8) located on one side of the air outlet door (4). The center line of the air outlet door (4) is perpendicular to the inclined wedge surface (8). A cooling water cavity (2) is formed in the air cylinder cover (1). The temperature of the air cylinder cover and the air outlet door can be rapidly and effectively reduced, overheat and corrosion actions brought by high-temperature air can be weakened, and sufficient mixing of air and fuel can be facilitated; and the combustion quality is improved, the accumulated carbon content of exhausted gas is reduced, and the service life of the air cylinder cover is prolonged.

Description

technical field [0001] The invention belongs to the field of cylinder heads, in particular to a diesel engine cylinder head. Background technique [0002] Cylinder head is one of the parts with the most complicated shape in diesel engine, it forms the combustion space together with the top of piston and the inner wall of cylinder. The working environment of the cylinder head is very harsh. The engine generates a lot of heat during the working process. The top surface of the valve head is directly in contact with the high-temperature gas, which causes the intake and exhaust valves to be heated and forms a high-temperature area around them. In particular, the exhaust valve is washed by high-temperature exhaust during the exhaust process, especially when the exhaust valve is just opened, the gas pressure in the cylinder is still relatively high, and at this time the valve opening is still small, high temperature The gas is blown out through the gap between the valve and the se...

AI Technical Summary

Problems solved by technology

[0003] The air movement in the cylinder of the internal combustion engine has a decisive influence on the formation of the mixture and the combustion process. The geometric shape and structural size of the combustion chamber are not ideal, which will lead to the mixing of air and fuel not being optimal, the fuel cannot be completely burned, and the combustion efficiency is low. , the emission level of pollutants is not ideal, and the level of soot particles in the combustion chamber is very high, which in turn affects the power, economy, reliability and emission of harmful exhaust gases of the engine

Therefore, it is necessary to organize the air movement in the cylinder well to solve the defects of poor air and fuel mixing in diesel engines, incomplete combustion of fuel, and low thermal fatigue life of the cylinder head.

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