Patent ID: 8677976
Filing Date: 2014-03-25
Classification: F02M,F04B

Abstract:
1. A high pressure fuel pump configured to pressurize and supply a fuel by driving a cam such that a plunger reciprocates, comprising: a lifter guide having a guide hole; a litter that is fitted into the guide hole to be free to slide so as to transmit a driving force from the cam to the plunger, the lifter including a cylindrical side wall portion configured to slide within the guide hole, and a bottom wall portion that closes a lower end of the side wall portion, an upper surface of the bottom wall portion being in contact with the plunger, and a lower surface of the bottom wall portion being in contact with the cam; an oil collection portion that is located above the guide hole so as to surround a periphery of the lifter, the oil collection portion being configured to store a lubricating oil for lubricating a sliding portion between the lifter and the guide hole; and an oil supply passage configured to allow the lubricating oil to be supplied to the oil collection portion, wherein the oil supply passage is formed in the lifter guide so as to open into the oil collection portion at an opening portion, wherein the lifter and the lifter guide are disposed at an incline relative to a vertical line, and wherein the opening portion is located at a highest vertical position of a circle that (i) has an axis that is coaxial with a longitudinal axis of the lifter and (ii) passes through the opening portion.