Control Device for Internal Combustion Engine
First Claim
1. A control device for an internal combustion engine, the control device comprising:
- an electronic control unit configured to control the internal combustion engine in a case where a cooling water temperature pertaining to the internal combustion engine is equal to or higher than a reference cooling water temperature such that a center-of-gravity position of a heat generation rate of the internal combustion engine becomes a crank angle at a reference position, the electronic control unit being configured to control the internal combustion engine in a case where the cooling water temperature pertaining to the internal combustion engine is lower than the reference cooling water temperature such that the center-of-gravity position of a heat generation rate becomes a crank angle further on an advance side than the reference position.
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Abstract
The invention relates to a control device for an internal combustion engine using the center-of-gravity position of a heat generation rate for combustion control. This control device controls the center-of-gravity position of a heat generation rate to correspond to a reference position in a case where an engine cooling water temperature is equal to or higher than a reference cooling water temperature and controls the center-of-gravity position of a heat generation rate to correspond to a crank angle further on an advance side than the reference position in a case where the engine cooling water temperature is lower than the reference cooling water temperature.
12 Citations
17 Claims
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1. A control device for an internal combustion engine, the control device comprising:
an electronic control unit configured to control the internal combustion engine in a case where a cooling water temperature pertaining to the internal combustion engine is equal to or higher than a reference cooling water temperature such that a center-of-gravity position of a heat generation rate of the internal combustion engine becomes a crank angle at a reference position, the electronic control unit being configured to control the internal combustion engine in a case where the cooling water temperature pertaining to the internal combustion engine is lower than the reference cooling water temperature such that the center-of-gravity position of a heat generation rate becomes a crank angle further on an advance side than the reference position. - View Dependent Claims (7, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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2. A control device for an internal combustion engine, the internal combustion engine including an exhaust gas purification catalyst, the control device comprising:
an electronic control unit configured to control the internal combustion engine in a case where a temperature pertaining to the exhaust gas purification catalyst is equal to or higher than a reference catalyst temperature such that a center-of-gravity position of a heat generation rate of the internal combustion engine becomes a crank angle at a reference position, the electronic control unit being configured to control the internal combustion engine in a case where the temperature pertaining to the exhaust gas purification catalyst is lower than the reference catalyst temperature such that the center-of-gravity position of a heat generation rate becomes a crank angle further on a retard side than the reference position.
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3. A control device for an internal combustion engine, the internal combustion engine including an exhaust gas purification catalyst, the control device comprising:
an electronic control unit configured to control the internal combustion engine in a case where a cooling water temperature pertaining to the internal combustion engine is equal to or higher than a reference cooling water temperature such that a center-of-gravity position of a heat generation rate of the internal combustion engine becomes a crank angle at a reference position, the electronic control unit being configured to control the internal combustion engine in a case where the cooling water temperature pertaining to the internal combustion engine is lower than a center-of-gravity position switching temperature such that the center-of-gravity position of a heat generation rate becomes a crank angle further on an advance side than the reference position, the center-of-gravity position switching temperature being a temperature lower than the reference cooling water temperature, and the electronic control unit being configured to control the internal combustion engine in a case where the cooling water temperature pertaining to the internal combustion engine is equal to or higher than the center-of-gravity position switching temperature such that the center-of-gravity position of a heat generation rate becomes a crank angle further on a retard side than the reference position.
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4. A control device for an internal combustion engine, the control device comprising:
an electronic control unit configured to control the internal combustion engine in a case where warm-up of the internal combustion engine is completed such that a center-of-gravity position of a heat generation rate of the internal combustion engine becomes a crank angle at a reference position, the electronic control unit being configured to control the internal combustion engine in a case where an engine warm-up of the internal combustion engine is required such that the center-of-gravity position of a heat generation rate becomes a crank angle further on an advance side than the reference position. - View Dependent Claims (8)
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5. A control device for an internal combustion engine, the internal combustion engine including an exhaust gas purification catalyst, the control device comprising:
an electronic control unit configured to control the internal combustion engine in a case where warm-up of the exhaust gas purification catalyst is completed such that a center-of-gravity position of a heat generation rate of the internal combustion engine becomes a crank angle at a reference position, the electronic control unit being configured to control the internal combustion engine in a case where the warm-up of the exhaust gas purification catalyst is required such that the center-of-gravity position of a heat generation rate becomes a crank angle further on a retard side than the reference position.
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6. A control device for an internal combustion engine, the internal combustion engine including an exhaust gas purification catalyst, the control device comprising:
an electronic control unit configured to control the internal combustion engine in a case where warm-up of the internal combustion engine and warm-up of the exhaust gas purification catalyst are completed such that a center-of-gravity position of a heat generation rate becomes a crank angle at a reference position, the electronic control unit being configured to control the internal combustion engine in a case where the warm-up of the internal combustion engine is required such that the center-of-gravity position of a heat generation rate becomes a crank angle further on an advance side than the reference position, and the electronic control unit being configured to control the internal combustion engine in a case where the warm-up of the exhaust gas purification catalyst is required such that the center-of-gravity position of a heat generation rate becomes a crank angle further on a retard side than the reference position.
Specification