HIGH PRESSURE SUPPLY PUMP

摘要

PURPOSE: A high pressure supply pump is provided to secure the durability and wear resistance of a cam and a bush by applying a lubricating oil instead of a fuel and to reduce the driving torque by improving lubricating efficiency. CONSTITUTION: An oil drain hole(d) for returning the fuel leaking through a gap between a barrel(6) and a plunger(7) and a stem chamber for restraining the leaked fuel from flowing into a housing(1) are installed on the end of the barrel. A return line(22) connected to a globe(e) on the inner face of the housing is installed to collect and return the leaked fuel. A lubricating oil inlet(20) and a lubricating oil outlet(21) are installed to circulate a lubricating oil through the inside of the housing. Therefore, a fuel is isolated from the lubricating oil.