IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0354056
(2006-02-15)
|
등록번호 |
US-7258102
(2007-08-21)
|
우선권정보 |
JP-2005-078460(2005-03-18) |
발명자
/ 주소 |
- Kinose,Kenichi
- Tahara,Tatsuya
|
출원인 / 주소 |
- Toyota Jidosha Kabushiki Kaisha
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
3 인용 특허 :
2 |
초록
▼
An engine ECU executes a program including the steps of: detecting an air-fuel ratio; calculating a learn value of a feedback correction amount for total fuel injection amount calculated based on the air-fuel ratio, for a plurality of learning regions obtained as a result of division corresponding t
An engine ECU executes a program including the steps of: detecting an air-fuel ratio; calculating a learn value of a feedback correction amount for total fuel injection amount calculated based on the air-fuel ratio, for a plurality of learning regions obtained as a result of division corresponding to an intake air amount; interpolating the learn value at an intake air amount different from the intake air amount detected at the time of calculation of the learn value, based on the calculated learn value; and correcting an amount of fuel injection based on the obtained learn value.
대표청구항
▼
What is claimed is: 1. A control device for an internal combustion engine, said internal combustion engine including a first fuel injection mechanism injecting fuel into a cylinder and a second fuel injection mechanism injecting fuel into an intake manifold, comprising: a first control unit control
What is claimed is: 1. A control device for an internal combustion engine, said internal combustion engine including a first fuel injection mechanism injecting fuel into a cylinder and a second fuel injection mechanism injecting fuel into an intake manifold, comprising: a first control unit controlling said fuel injection mechanism so that the fuel is injected solely from said first fuel injection mechanism in a first injection region; a second control unit controlling said fuel injection mechanism so that the fuel is injected solely from said second fuel injection mechanism in a second injection region; a third control unit controlling said fuel injection mechanism so that the fuel is injected from said first fuel injection mechanism and said second fuel injection mechanism in a third injection region; a detection unit detecting an amount of air suctioned into said internal combustion engine; a first correction value calculation unit calculating a first correction value for an amount of fuel injection in said first injection region, for a plurality of learning regions obtained as a result of division corresponding to said amount of air; a second correction value calculation unit calculating a second correction value for an amount of fuel injection in said second injection region, for the plurality of learning regions; a third correction value calculation unit calculating a third correction value for an amount of fuel injection in said third injection region, for the plurality of learning regions; a first calculation unit calculating a correction value for an amount of fuel injection at an amount of air different from the amount of air detected when said first correction value is calculated, based on said first correction value; a second calculation unit calculating a correction value for an amount of fuel injection at an amount of air different from the amount of air detected when said second correction value is calculated, based on said second correction value; and a third calculation unit calculating a correction value for an amount of fuel injection at an amount of air different from the amount of air detected when said third correction value is calculated, based on said third correction value. 2. The control device for an internal combustion engine according to claim 1, wherein said first calculation unit calculates the correction value for the amount of fuel injection at the amount of air different from the amount of air detected when a plurality of said first correction values are calculated, based on said plurality of said first correction values, said second calculation unit calculates the correction value for the amount of fuel injection at the amount of air different from the amount of air detected when a plurality of said second correction values are calculated, based on said plurality of said second correction values, and said third calculation unit calculates the correction value for the amount of fuel injection at the amount of air different from the amount of air detected when a plurality of said third correction values are calculated, based on said plurality of said third correction values. 3. The control device for an internal combustion engine according to claim 1, wherein said third control unit controls said fuel injection mechanism by including at least a first ratio and a second ratio in a ratio between an amount of injection from said first fuel injection mechanism and an amount of injection from said second fuel injection mechanism, and said third calculation unit provides an identical correction value when said ratio of injection amount is set to said first ratio and when said ratio of injection amount is set to said second ratio. 4. The control device for an internal combustion engine according to claim 1, wherein said first control unit controls said fuel injection mechanism so that the amount of injection from said first fuel injection mechanism is corrected based on the correction value calculated by said first calculation unit, said second control unit controls said fuel injection mechanism so that the amount of injection from said second fuel injection mechanism is corrected based on the correction value calculated by said second calculation unit, and said third control unit controls said fuel injection mechanism so that at least one of the amount of injection from said first fuel injection mechanism and the amount of injection from said second fuel injection mechanism is corrected based on the correction value calculated by said third calculation unit. 5. The control device for an internal combustion engine according to claim 1, wherein said first fuel injection mechanism is an in-cylinder injector, and said second fuel injection mechanism is an intake manifold injector. 6. A control device for an internal combustion engine, said internal combustion engine including a first fuel injection mechanism injecting fuel into a cylinder and a second fuel injection mechanism injecting fuel into an intake manifold, comprising: a control unit controlling said fuel injection mechanism so that the fuel is injected from said first fuel injection mechanism and said second fuel injection mechanism in a predetermined injection region; a detection unit detecting an amount of air suctioned into said internal combustion engine; a correction value calculation unit calculating a correction value for an amount of fuel injection in said predetermined injection region, for a plurality of learning regions obtained as a result of division corresponding to said amount of air; and a calculation unit calculating a correction value for an amount of fuel injection at an amount of air different from the amount of air detected when said correction value is calculated, based on said correction value. 7. The control device for an internal combustion engine according to claim 6, wherein said calculation unit calculates the correction value for the amount of fuel injection at the amount of air different from the amount of air detected when a plurality of said correction values are calculated, based on said plurality of said correction values. 8. The control device for an internal combustion engine according to claim 6, wherein said control unit controls said fuel injection mechanism by including at least a first ratio and a second ratio in a ratio between an amount of injection from said first fuel injection mechanism and an amount of injection from said second fuel injection mechanism, and said calculation unit provides an identical correction value when said ratio of injection amount is set to said first ratio and when said ratio of injection amount is set to said second ratio. 9. The control device for an internal combustion engine according to claim 6, wherein said control unit controls said fuel injection mechanism so that at least one of the amount of injection from said first fuel injection mechanism and the amount of injection from said second fuel injection mechanism is corrected based on the correction value calculated by said calculation unit. 10. A control device for an internal combustion engine, said internal combustion engine including a first fuel injection mechanism injecting fuel into a cylinder and a second fuel injection mechanism injecting fuel into an intake manifold, comprising: a first control unit controlling said fuel injection mechanism so that the fuel is injected solely from said first fuel injection mechanism in a first injection region; a second control unit controlling said fuel injection mechanism so that the fuel is injected solely from said second fuel injection mechanism in a second injection region; a third control unit controlling said fuel injection mechanism so that the fuel is injected from said first fuel injection mechanism and said second fuel injection mechanism in a third injection region; a detection unit detecting an amount of air suctioned into said internal combustion engine; a first calculation unit calculating a first correction value for an amount of fuel injection in said first injection region, for at least one of a plurality of learning regions obtained as a result of division corresponding to said amount of air; a second calculation unit calculating a second correction value for an amount of fuel injection in said second injection region, for at least one of the plurality of learning regions; a third calculation unit calculating a third correction value for an amount of fuel injection in said third injection region, for at least one of the plurality of learning regions; a first setting unit setting a first correction value in other learning region based on the first correction value calculated by said first calculation unit; a second setting unit setting a second correction value in other learning region based on the second correction value calculated by said second calculation unit; and a third setting unit setting a third correction value in other learning region based on the third correction value calculated by said third calculation unit. 11. The control device for an internal combustion engine according to claim 10, wherein said first setting unit sets the first correction value in other learning region such that deviation from the first correction value calculated by said first calculation unit is within a predetermined range, said second setting unit sets the second correction value in other learning region such that deviation from the second correction value calculated by said second calculation unit is within a predetermined range, and said third setting unit sets the third correction value in other learning region such that deviation from the third correction value calculated by said third calculation unit is within a predetermined range. 12. The control device for an internal combustion engine according to claim 10, wherein said first setting unit sets the first correction value in other learning region to be equal to the first correction value calculated by said first calculation unit, said second setting unit sets the second correction value in other learning region to be equal to the second correction value calculated by said second calculation unit, and said third setting unit sets the third correction value in other learning region to be equal to the third correction value calculated by said third calculation unit. 13. A control device for an internal combustion engine, said internal combustion engine including a first fuel injection mechanism injecting fuel into a cylinder and a second fuel injection mechanism injecting fuel into an intake manifold, comprising: a control unit controlling said fuel injection mechanism so that the fuel is injected from said first fuel injection mechanism and said second fuel injection mechanism in a predetermined injection region; a detection unit detecting an amount of air suctioned into said internal combustion engine; a calculation unit calculating a correction value for an amount of fuel injection in said predetermined injection region, for at least one of a plurality of learning regions obtained as a result of division corresponding to said amount of air; and a setting unit setting a correction value in other learning region based on the correction value calculated by said calculation unit. 14. The control device for an internal combustion engine according to claim 13, wherein said setting unit sets the correction value in other learning region such that deviation from the correction value calculated by said calculation unit is within a predetermined range. 15. The control device for an internal combustion engine according to claim 13, wherein said setting unit sets the correction value in other learning region to be equal to the correction value calculated by said calculation unit. 16. A control device for an internal combustion engine, said internal combustion engine including first fuel injection means for injecting fuel into a cylinder and second fuel injection means for injecting fuel into an intake manifold, comprising: first control means for controlling said fuel injection means so that the fuel is injected solely from said first fuel injection means in a first injection region; second control means for controlling said fuel injection means so that the fuel is injected solely from said second fuel injection means in a second injection region; third control means for controlling said fuel injection means so that the fuel is injected from said first fuel injection means and said second fuel injection means in a third injection region; means for detecting an amount of air suctioned into said internal combustion engine; means for calculating a first correction value for an amount of fuel injection in said first injection region, for a plurality of learning regions obtained as a result of division corresponding to said amount of air; means for calculating a second correction value for an amount of fuel injection in said second injection region, for the plurality of learning regions; means for calculating a third correction value for an amount of fuel injection in said third injection region, for the plurality of learning regions; first calculation means for calculating a correction value for an amount of fuel injection at an amount of air different from the amount of air detected when said first correction value is calculated, based on said first correction value; second calculation means for calculating a correction value for an amount of fuel injection at an amount of air different from the amount of air detected when said second correction value is calculated, based on said second correction value; and third calculation means for calculating a correction value for an amount of fuel injection at an amount of air different from the amount of air detected when said third correction value is calculated, based on said third correction value. 17. The control device for an internal combustion engine according to claim 16, wherein said first calculation means includes means for calculating the correction value for the amount of fuel injection at the amount of air different from the amount of air detected when a plurality of said first correction values are calculated, based on said plurality of said first correction values, said second calculation means includes means for calculating the correction value for the amount of fuel injection at the amount of air different from the amount of air detected when a plurality of said second correction values are calculated, based on said plurality of said second correction values, and said third calculation means includes means for calculating the correction value for the amount of fuel injection at the amount of air different from the amount of air detected when a plurality of said third correction values are calculated, based on said plurality of said third correction values. 18. The control device for an internal combustion engine according to claim 16, wherein said third control means includes means for controlling said fuel injection means by including at least a first ratio and a second ratio in a ratio between an amount of injection from said first fuel injection means and an amount of injection from said second fuel injection means, and said third calculation means includes means for providing an identical correction value when said ratio of injection amount is set to said first ratio and when said ratio of injection amount is set to said second ratio. 19. The control device for an internal combustion engine according to claim 16, wherein said first control means includes means for controlling said fuel injection means so that the amount of injection from said first fuel injection means is corrected based on the correction value calculated by said first calculation means, said second control means includes means for controlling said fuel injection means so that the amount of injection from said second fuel injection means is corrected based on the correction value calculated by said second calculation means, and said third control means includes means for controlling said fuel injection means so that at least one of the amount of injection from said first fuel injection means and the amount of injection from said second fuel injection means is corrected based on the correction value calculated by said third calculation means. 20. The control device for an internal combustion engine according to any one of claims claim 16, wherein said first fuel injection means is an in-cylinder injector, and said second fuel injection means is an intake manifold injector. 21. A control device for an internal combustion engine, said internal combustion engine including first fuel injection means for injecting fuel into a cylinder and second fuel injection means for injecting fuel into an intake manifold, comprising: control means for controlling said fuel injection means so that the fuel is injected from said first fuel injection means and said second fuel injection means in a predetermined injection region; means for detecting an amount of air suctioned into said internal combustion engine; means for calculating a correction value for an amount of fuel injection in said predetermined injection region, for a plurality of learning regions obtained as a result of division corresponding to said amount of air; and means for calculating a correction value for an amount of fuel injection at an amount of air different from the amount of air detected when said correction value is calculated, based on said correction value. 22. The control device for an internal combustion engine according to claim 21, wherein said calculation means includes means for calculating the correction value for the amount of fuel injection at the amount of air different from the amount of air detected when a plurality of said correction values are calculated, based on said plurality of said correction values. 23. The control device for an internal combustion engine according to claim 21, wherein said control means includes means for controlling said fuel injection means by including at least a first ratio and a second ratio in a ratio between an amount of injection from said first fuel injection means and an amount of injection from said second fuel injection means, and said calculation means includes means for providing an identical correction value when said ratio of injection amount is set to said first ratio and when said ratio of injection amount is set to said second ratio. 24. The control device for an internal combustion engine according to claim 21, wherein said control means includes means for controlling said fuel injection means so that at least one of the amount of injection from said first fuel injection means and the amount of injection from said second fuel injection means is corrected based on the correction value calculated by said calculation means. 25. A control device for an internal combustion engine, said internal combustion engine including first fuel injection means for injecting fuel into a cylinder and second fuel injection means for injecting fuel into an intake manifold, comprising: first control means for controlling said fuel injection means so that the fuel is injected solely from said first fuel injection means in a first injection region; second control means for controlling said fuel injection means so that the fuel is injected solely from said second fuel injection means in a second injection region; third control means for controlling said fuel injection means so that the fuel is injected from said first fuel injection means and said second fuel injection means in a third injection region; means for detecting an amount of air suctioned into said internal combustion engine; first calculation means for calculating a first correction value for an amount of fuel injection in said first injection region, for at least one of a plurality of learning regions obtained as a result of division corresponding to said amount of air; second calculation means for calculating a second correction value for an amount of fuel injection in said second injection region, for at least one of the plurality of learning regions; third calculation means for calculating a third correction value for an amount of fuel injection in said third injection region, for at least one of the plurality of learning regions; first setting means for setting a first correction value in other learning region based on the first correction value calculated by said first calculation means; second setting means for setting a second correction value in other learning region based on the second correction value calculated by said second calculation means; and third setting means for setting a third correction value in other learning region based on the third correction value calculated by said third calculation means. 26. The control device for an internal combustion engine according to claim 25, wherein said first setting means includes means for setting the first correction value in other learning region such that deviation from the first correction value calculated by said first calculation means is within a predetermined range, said second setting means includes means for setting the second correction value in other learning region such that deviation from the second correction value calculated by said second calculation means is within a predetermined range, and said third setting means includes means for setting the third correction value in other learning region such that deviation from the third correction value calculated by said third calculation means is within a predetermined range. 27. The control device for an internal combustion engine according to claim 25, wherein said first setting means includes means for setting the first correction value in other learning region to be equal to the first correction value calculated by said first calculation means, said second setting means includes means for setting the second correction value in other learning region to be equal to the second correction value calculated by said second calculation means, and said third setting means includes means for setting the third correction value in other learning region to be equal to the third correction value calculated by said third calculation means. 28. A control device for an internal combustion engine, said internal combustion engine including first fuel injection means for injecting fuel into a cylinder and second fuel injection means for injecting fuel into an intake manifold, comprising: control means for controlling said fuel injection means so that the fuel is injected from said first fuel injection means and said second fuel injection means in a predetermined injection region; means for detecting an amount of air suctioned into said internal combustion engine; calculation means for calculating a correction value for an amount of fuel injection in said predetermined injection region, for at least one of a plurality of learning regions obtained as a result of division corresponding to said amount of air; and setting means for setting a correction value in other learning region based on the correction value calculated by said calculation means. 29. The control device for an internal combustion engine according to claim 28, wherein said setting means includes means for setting the correction value in other learning region such that deviation from the correction value calculated by said calculation means is within a predetermined range. 30. The control device for an internal combustion engine according to claim 28, wherein said setting means includes means for setting the correction value in other learning region to be equal to the correction value calculated by said calculation means.
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