FUEL PRESSURE DELAY CYLINDER

摘要

A delay device (12) for an engine fuel injector (10) having a control valve (50) for controlling high pressure actuating fluid flow to an intensifier (204) responsive to an injection command defining the duration of an injection event to increase the pressure on a volume of fuel for injection. The delay device (12) includes a piston (18) shiftable between a first disposition and a second disposition over a period of time after initiation of the injection command to effect a delay in initiation of fuel injection after initiation of the injection command. A method of controlling a fuel injection event includes flowing actuating fluid from the controller (50) to an intensifier (204) responsive to an injection command, pressurizing the fuel by the intensifier (204), flowing pressurized fuel to an injector nozzle (16), and interposing a delay in the flow of fuel to the injector nozzle (16).