DISPOSITIVO DI LUBRIFICAZIONE PER MOTORE A COMBUSTIONE INTERNA

摘要

A supply pump includes a housing that has a tappet receiving chamber, which receives a plunger drive mechanism, and oil for lubricating respective lubricating portions of the plunger drive mechanism is temporarily retained in the tappet receiving chamber. In the housing, a communication hole opens in an inner peripheral wall surface of a tappet guide and guides the oil from a tappet upper side chamber into a tappet lower side chamber at the time of upwardly moving a tappet.