A calculation method for the reliability of a fuel injection pump based on dynamic simulation
GONG Jiru
CHEN Guoqiang
SUN Jiuyang
FENG Yong
HUANG Tianyi
Abstract：In order to accurately assess the reliability of the diesel injection pump,a method of dynamical calculation of the injection pump is proposed,and a dynamical model of a diesel injection pump through AVL Excite software is developed.Taking into account the impact of factors such as fluctuations in speed,fuel pressure,the stiffness of the components,a dynamic analysis is conducted on the thickness of the liner oil film,the strength of the camshaft,and the output torque,and the simulation results are compared with the test results.The results show that the camshaft bushing oil film thickness and camshaft strength calculated using this method correspond to the actual failure condition,the relative error of the simulated calculated output torque of the injection pump is approximately 5％ relative to the average peak of the test results,and the design of the injection pump model can be used to calculate the dynamics of the injection pump.
Keywords：fuel injection pumpreliabilitycamshaftbushingfatigue strength
Publication Date：2026-02-28
Online Publishing Date：2026-05-22(First online date of this platform, not the publication date of the document)
Pages：6( 50-55 )