Mitsubishi Electric Corporation

Shingo Takahashi

Shuichi Wada

Masahiko Nomura

The control device for an internal combustion engine including a plurality of cylinders includes: a misfire detection unit for detecting a misfire state for each of the plurality of cylinders; a plurality of electronic throttles each provided on an intake pipe corresponding to each of the plurality of cylinders, for adjusting an intake air amount taken into each cylinder by way of a throttle opening degree; and a throttle opening degree control unit for controlling the throttle opening degree of each of the plurality of electronic throttles. When the misfire detection unit detects the misfire state in any one of the plurality of cylinders, the throttle opening degree control unit decreases a limited value of the throttle opening degree of the cylinder in the misfire state as time elapses.

Control device and control method for internal combustion engine

Provided is a control unit () for setting, for respective electronic throttles () and () provided for respective cylinders, respective ranges of a difference between a target rpm and an engine rpm where the electronic throttles () and () are not operated as a first dead zone and a second dead zone, determining, for each of the electronic throttles () and (), whether or not the difference between the target rpm and the engine rpm is in the dead zone, preventing the electronic throttle determined to have the difference in the dead zone from operating, and determining, for the electronic throttle determined to have the difference exceeding the dead zone, a control gain for the electronic throttle depending on the magnitude of the difference, thereby operating the electronic throttle.

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Chiyoda-ku, Japan

Shingo Takahashi