METHOD AND APPARATUS FOR DELIVERING MULTIPLE FUEL INJECTIONS TO THE CYLINDER OF AN INTERNAL COMBUSTION ENGINE

摘要

A fuel injection control system (10) and method for delivering multiple fuel injections to a cylinder of an engine (12) during a fuel injection event based upon engine operating conditions, the control system (10) including an electronic controller (56) coupled to an electronically controlled fuel injector (14), and a plurality of sensors (58) coupled to the controller (56) for inputting certain signals (51-58) representative of certain engine operating conditions of the engine (12), the controller (56) being operable to output a fuel injection signal (510) to the fuel injector (14) to deliver a first (60), a second (62), and a third (64) fuel shot to the cylinder during a fuel injection event based upon the sensor signals (51-58). The controller (56) also delivers each of the multiple fuel injection shots within defined cylinder piston displacement parameters during a particular piston stroke, within defined fuel apportionment limits, and within defined delay limits between each respective fuel shot so as to control exhaust emissions.