CAM BUSH HAVING A FUEL PUMP

摘要

PURPOSE: A cam bush of a fuel pump is provided to minimize friction between a cam and a plunger without the structure change of an existing fuel pump. CONSTITUTION: A cam bush of a fuel pump comprises a drive shaft(60), a cam(50), a cam bush(20), a plunger(30), a needle bearing(40), and a shaft force reducing unit. The drive shaft is eccentrically installed in a housing. The cam is interlocked with the drive shaft. The cam bush is moved when the drive shaft is rotated. The plunger is horizontally reciprocated when the cam bush is moved. The needle bearing is inserted between the cam and the cam bush to reduce friction between the cam and the cam bush. The shaft force reducing unit is inserted into the cam bush to reduce friction between the cam bush and the plunger.