| 摘要 |
A fuel injection controller (engine control ECU) controls a fuel injection mode of an engine having cylinder pressure sensors in all of four cylinders for measuring pressures in the cylinders. The controller measures a pressure (cylinder pressure) in the cylinder as an object cylinder (each of the four cylinders) based on an output of the corresponding cylinder pressure sensor when the fuel combustion is in progress in the object cylinder and the fuel to be used in the combustion is additionally injected and supplied to the same cylinder (e.g., when an after-injection is performed). The controller variably controls a command signal (i.e., pulse width) sent to the injector in relation to the target injection (the after-injection) on the basis of the measured cylinder pressure.
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