Pump assembly for common-rail system in diesel engine of motor car, has high pressure pump formed as radial piston pump, and electrically operated regular feed pump controlling high pressure amount of radial piston pump

摘要

The assembly has a high pressure pump formed as a radial piston pump (7) and comprising a mechanical feed pump (5) to convey lubrication amount for the radial piston pump. An electrically operated regular feed pump (6) controls the high pressure amount of the radial piston pump. The radial piston pump is supported with two stampers inside the radial piston pump. The feed pump includes an internal or external gear pump, which is located directly on the radial piston pump. The feed pump comprises a set of gears that is arranged directly in a housing (8) of the radial piston pump.