Fuel injection pump rotor

摘要

One of the fuel inlets not involved in the fuel distribution process is joined to a fuel space filled with the low pressure fuel via a pressure-compensating passage (105) which acts as direct link between the fuel outflow port and the fuel space. The compensating port is designed into the distributor rotor and links the fuel outflow port (94) plus a ring groove (97) and a passage slot. In this, the groove is connected to the outflow port as against the slot specified which, lying axially in the rotor direction (90), assists the groove as connection between fuel outflow and fuel flow passage ports. The slots of the rotor (9) lie opposite outflow ports and lie peripherally symmetric to a line joining the outflow to the centre of the rotor section. Several outflow ports connect at any one time to the compensating port and a collector in the fuel space stores low pressure fuel to suppress any fuel vibration, using the port in the rotor at connection between outflow and collector.