Abnormality determination device and method for internal combustion engine
AssigneeToyota Jidosha Kabushiki Kaisha
InventorAtsushi Morikawa
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Abstract
An ECU executes a program including: a control to advance or retard the fuel injection timing by a prescribed value; determining whether the torque output variation of an engine exceeds a threshold torque output variation; and determining the fuel injection timing to be abnormal if the torque output variation of the engine is equal to or below the threshold torque output variation.
Claims15
An abnormality determination device for an internal combustion engine provided with a fuel injection mechanism, the abnormality determination device comprising:
- a change section that changes a fuel injection timing of the injection mechanism;
- and
- a determination section that determines the fuel injection timing is abnormal if a torque output variation of the internal combustion engine is equal to or below a threshold torque output variation after the fuel injection timing is changed.
An abnormality determination method for an internal combustion engine provided with a fuel injection mechanism, the abnormality determination method comprising:
- changing a fuel injection timing of the injection mechanism;
- and
- determining whether the fuel injection timing is abnormal, wherein it is determined that the fuel injection timing is abnormal if a torque output variation of the internal combustion engine is equal to or below a threshold torque output variation after the fuel injection timing is changed.
Dependencies are inferred from the claim text.