Fuel injection system for an internal combustion engine

摘要

A fuel injection system has a feed pump by which fuel is supplied to a high-pressure pump which pumps fuel into a reservoir as a function of engine operating parameters. The system has a fuel metering device for adjusting the fuel quantity pumped by the high-pressure pump, the metering device having an actuator controlling a regulating valve having a slide-shaped valve member guided in a cylindrical bore of a valve housing and displaceable by the actuator counter to a restoring force. An outer jacket of the valve member in cooperation with an outlet from the cylindrical bore controls a flow cross section from the feed pump to the high-pressure pump. The valve member controlls an inlet opening, originating at the feed pump and discharging into the cylindrical bore, and in one position closes the inlet opening completely.