Rail Pressure Control Strategy for UltraHigh Pressure Common Rail System

ZHOU Lei; YANG Kun; LIU Zhenming; WANG Xin

doi:10.3969/j.issn.10012222.2017.02.009

Vehicle Engine ›› 2017, Vol. 0 ›› Issue (2) : 51-55. DOI: 10.3969/j.issn.10012222.2017.02.009

Rail Pressure Control Strategy for UltraHigh Pressure Common Rail System

ZHOU Lei1，YANG Kun1， LIU Zhenming1， WANG Xin2

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Abstract

In order to control the common rail pressure of the ultrahigh pressure common rail system and shorten the development period of the rail pressure control algorithm, the rail pressure control simulation model of ultrahigh pressure common rail system was established by using the AMESim/Simulink simulation technology, the rail pressure control strategy was designed with the feedforward and PID control algorithm, the simulation calculation was carried out for the transient and steady working condition of rail pressure control, and finally the rail pressure tracing test was conducted in the test bench. The results show that the feedforward and PID control algorithm can make the rail pressure fluctuate less than 3 MPa near the target rail pressure. Besides, the transient response time is less than 0.5 s. Accordingly, the control results can meet the precision and speed requirements of the ultrahigh pressure common rail system.

Key words

ultrahigh pressure common rail system / rail pressure control / simulation

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ZHOU Lei， YANG Kun， LIU Zhenming， WANG Xin. Rail Pressure Control Strategy for UltraHigh Pressure Common Rail System[J]. Vehicle Engine. 2017, 0(2): 51-55 https://doi.org/10.3969/j.issn.10012222.2017.02.009