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Pressure control of high pressure oil pipe based on PID

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DOI: 10.23977/icmee.2019.2747

Author(s)

Hongsheng Qin

Corresponding Author

Hongsheng Qin

ABSTRACT

Due to the comprehensive consideration of power, economy and emission of the fuel engine, the high-pressure common rail system emerges as the times require and develops rapidly. The advantage of high pressure common rail system is that it can realize the flexible control of fuel injection, and it can realize the precise control of fuel injection quantity, timing and pressure, and it can realize multiple injections, even the flexible control of fuel injection. However, in the intermittent process of the actual fuel entering and ejecting process, there will be pressure changes in the high-pressure fuel pipe, as well as changes in the internal fuel density.S o it is very important to establish the time model of one-way valve based on PID control, high-pressure oil pipe, needle valve cam control model, fuel wave movement model and so on, and to give a reasonable evaluation combined with the actual situation.

KEYWORDS

PID, High pressure tubing, control

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