Taking a high pressure fuel pump based on the fuel metering valve as the research object, on the basis of in-troducing its work principle, the simulation model of high pressure fuel pump and common rail was established by using the AMESim software, and the accuracy of simulation model was verified by the performance experiment of high pressure fuel pump, finally, the influence of fuel metering valve control signal's frequency and duty ratio as well as drive shaft speed on the dynamic characteristics of high pressure fuel pump were analyzed based on this model. Results show that the frequency of fuel metering valve control signal has little influence on the dynamic characteristics of high pressure fuel pump, while the duty ratio of fuel metering valve control signal and drive shaft speed have great influence on the dynamic characteristics of high pressure fuel pump. With the reduction of fuel metering valve control signal duty ratio and the increase of drive shaft speed, the output response of high pressure fuel by high pressure fuel pump accelerate, and the pump fuel capacity enhance.%以某型基于燃油计量阀的高压油泵为研究对象,在介绍其工作原理的基础上,利用AMESim软件建立高压油泵及共轨管的仿真模型,并通过高压油泵性能试验验证仿真模型的准确性,最后利用模型分析燃油计量阀控制信号的频率和占空比以及驱动轴转速对高压油泵动态特性的影响.结果表明:燃油计量阀控制信号的频率对高压油泵动态特性的影响较小,而燃油计量阀控制信号的占空比和驱动轴转速对高压油泵动态特性的影响较大.随着燃油计量阀控制信号占空比的减小以及驱动轴转速的增大,高压油泵输出高压燃油的响应加快,泵油能力增强.
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