Patent ID: 6578551
Filing Date: 2003-06-17
Classification: F02D

Abstract:
A fuel injection control device for an internal combustion engine, the engine comprising a crankshaft, a plurality of cylinders which sequentially perform a combustion of fuel and a starter motor which cranks up the engine, each of the cylinders having an intake port and a fuel injector which injects fuel into the intake port and sequentially performing an intake stroke, a compression stroke, an expansion stroke and an exhaust stroke, the device comprising:a first sensor which identifies a cylinder in a specific position in a specific stroke and generates a corresponding signal; a second sensor which detects combustion of fuel; and a controller functioning to: execute a cylinder-stroke identification identifying a present stroke of each cylinder based on the signal generated by the first sensor; command the fuel injectors to simultaneously perform a primary fuel injection for a cylinder in the exhaust stroke and for a cylinder in the intake stroke, on a first execution of the cylinder-stroke identification; determine the presence or absence of fuel combustion as a result of the primary fuel injection based on a signal generated by the second sensor; and command an additional fuel injection, when the fuel combustion is not occurring, to the fuel injector of a cylinder undergoing an intake stroke at the time that the absence of fuel combustion is determined.