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Simulation on Pressure Control of Common Rail （模拟共轨压力控制）.pdf

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Simulation on Pressure Control of Common Rail （模拟共轨压力控制）

2011 International Conference on Computer Science and Information Technology (ICCSIT 2011) IPCSIT vol. 51 (2012) © (2 012) IACSIT Press, Singapore DOI: 10.7763/IPCSIT.2012.V51.84 Simulation on Pressure Control of Common Rail Line in High Pressure Fuel Injection System Wei Liua+ and Jun Wangb aFaculty of Material and Energy Guang Dong University of Technology, Guang Zhou, China bDepartment of Mechanical Engineering Academy of Armored Forces Engineering, Beijing, China Abstract. To improving the controlled effect of common rail pressure of high pressure common rail system, dynamic simulation for common rail pressure control is studied. The demand of common rail pressure control and simulating mechanism for PID control is briefly analyzed, calculating model of common rail pressure is presented with mixing way of hydraulic pressure model and flux boundary, by AMESim. hydraulic simulation software, dynamic simulation module for common rail pressure control is constructed, the control effect of control parameter, control duration and variable target are compared respectively, its result showed that the model can meet controlled demand of common rail pressure and reflect controlled effect of different parameter. Keywords: simulation, common rail pressure, PID control , diesel engine 1. Introduction High pressure common rail fuel injection can flexibly control injection parameter, and effectively decrease diesel engine emission and become main means for electronic control technology in diesel engine. Common rail pressure is directly affect injection pressure, i