PURPOSE: To restrict noise in usage, and eliminate danger of damaging a rotary finishing surface of a distribution rotor.
CONSTITUTION: A fuel injection pump 1 repeats a series of actions of suction, pressurization, and distribution, where a distribution rotor 13 is pushed by a spring 41 in such a direction as to get apart from a drive shaft 17, with a pressure surface 13c pushed to a bearing 43 for its motion in a thrust direction to be restricted. Collision of a protrusion 83 provided on the distribution rotor 13 with a stop groove 81 provided in a drive shaft 17 to generate noise at a coupling 8 can thus be eliminated. Because distortion of contact of a rotary finishing surface as an outer circumferential surface of a small diameter part 13a of the distribution rotor 13 with an inner circumferential surface of a cylinder 12 by above collision is also eliminated. damaging of the rotary finishing surface of the small diameter part 13a is eliminated.
MIYAKI MASAHIKO
NAGATANI KOICHI
MURAKAMI ATSUSHI
TAKAHASHI TAKASHI
TOYOTA MOTOR CORP