Vehicle power transmission having fluid-tight enclosure accomodating lubricating points and storing lubricating oil delivered from mechanical oil pump

摘要

A motor vehicle power transmission system whose rotating elements are all stopped upon stopping of the vehicle, and which comprises a lubricating device including an oil sump (78) for storing a lubricating oil and a mechanically operated oil pump (74) which is driven by one (22a) of the rotating elements to deliver the pressurized lubricating oil to predetermined lubricating points (52, 54, 56, 18, 20) such as bevel gears of a differential gear device (14). The lubricating device (74, 78, 22a, 40, 70, 72, 98, 80, 82, 84, 88) has a substantially fluid-tight enclosure (73, 99) in which the lubricating points (52, 54, 56, 18, 20) are disposed and which stores, in a substantially fluid-tight manner, a mass of the lubricating oil delivered from the oil pump (74).