Fuel injection pump for internal combustion engine e.g. diesel engine, having pump drive shaft protected inside casing which has section that absorbs angle misalignment arising due to pumping force or in course of manufacturing process

摘要

The pump drive shaft (4) of feed pump (2) attached to fuel injection pump (1) has a section (41) assigned to inner rotor (23) with a central sectional diameter and to an internal insertion hole (26) of rotary component (21) with a second diameter. The assigned section has a conical shape at its end section, which absorbs the angle misalignments of pump drive shaft, due to pumping force. The fuel injection pump has a feed pump with inner rotor and a pump drive shaft protected inside casing (22). The rotary component has end sections and internal insertion hole for axial penetration. A lateral section is connected between the end sections of pump body with the inner rotor and also with the casing that admits the pump body in such a manner that the attached parts or the same are not reduced. The insertion hole has cam (43) placed externally on the drive shaft to rotate and a specified gap is formed and a cam coil rotates circular on the axle of the drive shaft to differentiate the specified gap. The cam ring (45) rotates on the axle of the drive shaft in accordance with the cam and a middle axle of the shaft differentiates the specified gap, whereas the pumping body has a cam chamber (15) that absorbs the cam as well as cam ring so that the cam and the cam ring rotate on the shaft and the middle axle of the cam ring differentiate the specific gap.