According to the cause of the failure of a main fuel pump regulator during the engine test,the fault analysis and related improvement measures were carried out according to the working principle of the engine.Fi-nally,it is determined that the fault is caused by the short front length of turbine flowmeter pipe design of the measuring system of the fuel pump regulator adjusting testing stand,the enhancement of vortex flow and the large measurement error.Based on the analysis of the principle of the testing stand system,the modification measures were formulated.When installing the turbine flow timing of the measuring system and increasing the length of its upstream straight pipe section,the failure of the minimum fuel quantity unqualified in the outfield test of the main fuel pump regulator was eliminated,and the reference was provided for the subsequent design of the measuring system of the fuel pump testing stand,which not only ensured the reliability and safety of the en-gine operation,but also ensured the reliability and safety of the engine.At the same time,the measuring preci-sion of the measuring system of the testing stand is improved.
关键词
燃油泵/调节器/涡轮流量计/试验器
Key words
Fuel pump/Regulator/Turbine flowmeter/Testing stand
维普
万方数据