Patent ID: 6863056

Claim:
A fuel injection control system for trimming an engine in a steady state so that a plurality of injectors contained therein operate in a pre-selected mode, the apparatus comprising: an engine speed sensor; an engine load sensor; an electronic control module in electrical communication with the engine speed sensor and the engine load sensor; wherein the electronic control module is operable, upon determining that the engine speed and load are in a steady state, to select a previously unselected injector; to determine the operating mode of the selected injector; to record the operating mode of the selected injector; to sequentially repeat the operations of selecting a previously unselected injector; to determine the operating mode of the selected injector and record the operating mode of the selected injector for each of the plurality of injectors; to compare the recorded operating mode of each injector to the pre-selected operating mode to determine which of the selected injectors is not operating in the pre-selected operating mode; and to change the detected operating mode to the pre-selected mode for each of the injectors determined to be operating in other than the pre-selected operating mode.