Control device and control method for internal combustion engine
First Claim
1. A control device for an internal combustion engine including a plurality of cylinders, the control device comprising:
- 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 of the plurality of cylinders 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,wherein, when the misfire detection unit detects the misfire state in any one of the plurality of cylinders, the throttle opening degree control unit gradually decreases a maximum allowed value of the throttle opening degree of the electronic throttle corresponding to the cylinder in the misfire state as time elapses.
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Accused Products
Abstract
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.
10 Citations
8 Claims
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1. A control device for an internal combustion engine including a plurality of cylinders, the control device comprising:
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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 of the plurality of cylinders 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, wherein, when the misfire detection unit detects the misfire state in any one of the plurality of cylinders, the throttle opening degree control unit gradually decreases a maximum allowed value of the throttle opening degree of the electronic throttle corresponding to the cylinder in the misfire state as time elapses. - View Dependent Claims (2, 3, 4, 7)
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5. A control method for an internal combustion engine, the internal combustion engine comprising:
- a plurality of cylinders;
a misfire detection unit; and
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 of the plurality of cylinders by way of a throttle opening degree, the control method comprising;detecting, using the misfire detection unit, a misfire state for each of the plurality of cylinders; and gradually decreasing, when the misfire detection unit detects the misfire state in any one of the plurality of cylinders, a maximum allowed value of the throttle opening degree of the electronic throttle corresponding to the cylinder in the misfire state as time elapses. - View Dependent Claims (6, 8)
- a plurality of cylinders;
Specification