In order to control the common rail pressure of the ultrahigh pressure common rail system and shorten the development period of the rail pressure control algorithm, the rail pressure control simulation model of ultrahigh pressure common rail system was established by using the AMESim/Simulink simulation technology, the rail pressure control strategy was designed with the feedforward 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 feedforward 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 ultrahigh pressure common rail system.
ZHOU Lei
,
YANG Kun
,
LIU Zhenming
,
WANG Xin
. Rail Pressure Control Strategy for UltraHigh Pressure Common Rail System[J]. Vehicle Engine, 2017
, 0(2)
: 51
-55
.
DOI: 10.3969/j.issn.10012222.2017.02.009
