GASEOUS FUEL DIRECT INJECTION SYSTEM

摘要

A gaseous direct fuel injection system for a spark ignition combustion engine has a fuel supply means (11) comprising a plurality of volumes (13, 14) corresponding with a plurality of coexisting available fuel pressures for gaseous fuel to be supplied to the fuel injectors (9) at at least some operating points of the engine. A control unit selects the supply fuel pressure as a function of engine operating conditions.