FUEL INJECTOR CONTROL SYSTEM AND METHOD

摘要

A fuel injector (32) for an internal combustion engine (10) is disclosed. The fuel injector has a plunger (72), an electronically controlled check valve (80), and a controller (53) in communication with the electronically controlled check valve. The controller is configured to receive a indication of a desired start of injection timing relative to an angular position of a crankshaft (24) of the engine, and a desired injection quantity. The controller is also configured to determine a displacement of the plunger based on an angular position of the crankshaft; to determine a start of current for the electronically controlled check valve relative to plunger displacement that results in the desired start of injection timing, and to determine an end of current for the electronically controlled check valve relative to plunger displacement that results in the desired injection quantity. The controller is further configured to affect the determined start and end of current for the electronically controlled check valve.