Diesel engine pressurized air bypass device

Abstract

The invention discloses a diesel engine pressurized air bypass device comprising an air filter, a pressure reducing valve, a compressed air inlet pipe and a by-pass valve. The compressed air inlet pipe is connected to the air filter and the pressure reducing valve in sequence, and the upper end of the by-pass valve is connected to a scavenge box cover plate of a diesel engine. The by-pass valve comprises a by-pass valve body, a valve core, a spring and a valve rod, and the output end of the pressure reducing valve communicates with a lower end cover of the by-pass valve through a compressed air outlet pipe. The valve core is embedded in a longitudinal pipe of the by-pass valve body, and a central through hole of a horizontal pore plate is closed by the top end of the valve core. One end ofthe valve rod extends into the longitudinal pipe, and the other end of the valve rod is in threaded connection with the lower end cover, and extends out of the lower end cover; and the upper and lower ends of the spring are supported between the top of the longitudinal pipe and the inner side of the lower end cover separately. The diesel engine pressurized air bypass device has the advantages ofsimple structure, low manufacturing cost, less parts, firmness and durability, easy maintenance and low cost, and the boosting pressure of the diesel engine is reduced effectively so that the operating cost of the diesel engine is reduced; and the working efficiency is improved.

Description

technical field [0001] The invention relates to a device for optimizing the load of a diesel engine, in particular to a device for reducing the supercharging pressure of a scavenging box of a diesel engine, and belongs to the technical field of internal combustion engines. Background technique [0002] In the actual operation of the diesel engine, it will not run at full load for a long time, but keep running at a state lower than full load according to the user's requirements. At this time, the structure optimized for partial load can make the diesel engine run at a certain load point. It has the advantage of low fuel consumption during operation. However, this structure makes the boost pressure of the diesel engine higher than the conventional structure, which will cause the explosion pressure of the diesel engine to exceed the limit, and cause problems such as increased wear and tear on the parts of each cylinder. Therefore, a booster air that reduces the boost pressure o...

AI Technical Summary

Problems solved by technology

However, the cost of the solenoid valve is very high, and because the diesel engine vibrates greatly during operation, the solenoid valve is easily damaged under such working conditions and needs to be replaced frequently, which increases the operating cost of the diesel engine and reduces work efficiency

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