MULTI-SHAFT SEAL FOR A HIGH PRESSURE PUMP OF A COMMON RAIL, CAPABLE OF ASSEMBLING AN OIL SEAL AND A FUEL SEAL INSIDE A HOUSING UNIT

摘要

PURPOSE: A multi-shaft seal for a high pressure pump of a common rail is provided to prevent lubricating oil and fuel from being mixed when one of an oil seal and a fuel seal have problem as a ring-shaped bush is arranged between the oil seal and the fuel seal.;CONSTITUTION: A multi-shaft seal for a high pressure pump(2) of a common rail comprises a seal housing unit(11), an oil seal(12), a fuel seal(13), and a ring-shaped bush(14). The seal housing unit is arranged in a drive shaft of the high pressure pump. The oil seal is arranged adjacent to a chain system inside the seal housing unit for preventing lubricating oil received in the chain system of an engine flowing into the high pressure pump. The fuel seal is arranged inside the seal housing unit parallel to the oil seal for preventing fuel inside the high pressure pump from being discharged to outside.;COPYRIGHT KIPO 2013