Common-rail fuel system for IC engine has fuel fed from between fuel metering device and high pressure fuel pump fed to low pressure region with pressure reduction device

摘要

The fuel system (10) has a low pressure fuel pump (16) coupled to a high pressure fuel pump (26) via a suction valve (50) and a fuel metering device (56), with fuel led off from between the fuel metering device and the high pressure pump fed to a low pressure region, in which the pressure is regulated via a pressure reduction device (72).