IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
UP-0907763
(2007-10-17)
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등록번호 |
US-7805939
(2010-10-26)
|
우선권정보 |
JP-2005-057568(2005-03-02); JP-2005-057569(2005-03-02); JP-2005-057570(2005-03-02) |
발명자
/ 주소 |
- Kimoto, Kayoko
- Isobe, Daiji
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출원인 / 주소 |
|
대리인 / 주소 |
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인용정보 |
피인용 횟수 :
6 인용 특허 :
17 |
초록
▼
A torque base control unit calculates target torque based on an accelerator position and engine speed. The control unit further executes calculation of target airflow rate, calculation of target intake pressure, and calculation of target boost pressure based on the target torque. Target throttle pos
A torque base control unit calculates target torque based on an accelerator position and engine speed. The control unit further executes calculation of target airflow rate, calculation of target intake pressure, and calculation of target boost pressure based on the target torque. Target throttle position is calculated based on the target airflow rate, target intake pressure, target boost pressure, actual boost pressure, and throttle passed intake temperature. An assist control unit calculates target turbine power based on the target airflow rate and the target boost pressure calculated by the torque base control unit and calculates actual turbine power based on exhaust information. Assist power of a motor attached to a turbocharger is calculated based on the power difference between the target turbine power and the actual turbine power.
대표청구항
▼
What is claimed is: 1. A controller for an internal combustion engine with a supercharger, applied to an internal combustion engine having a supercharger for supercharging an intake air by an exhaust power and an auxiliary supercharging device provided upstream or downstream of the supercharger and
What is claimed is: 1. A controller for an internal combustion engine with a supercharger, applied to an internal combustion engine having a supercharger for supercharging an intake air by an exhaust power and an auxiliary supercharging device provided upstream or downstream of the supercharger and operated on power other than exhaust as a power source, the controller for controlling an output torque of the internal combustion engine by adjusting volume of air taken into the internal combustion engine by an airflow rate adjusting means, the controller comprising: a target power calculating means that calculates a target power of the supercharger based on information of an intake airflow rate of the internal combustion engine; an actual power calculating means that calculates an actual power of the supercharger; an assist amount calculating means that calculates an assist amount of the auxiliary supercharging device based on a target power and an actual power of the supercharger, the assist amount corresponding to an insufficient amount of the actual power relative to the target power; an assist control means that controls the auxiliary supercharging device by the calculated assist amount; and a means that calculates an exhaust parameter of exhaust from the internal combustion engine by estimation or measurement, wherein the actual power calculating means calculates an actual power of the supercharger based on the exhaust parameter. 2. A controller for an internal combustion engine with a supercharger, applied to an internal combustion engine having a supercharger for supercharging an intake air by an exhaust power and an auxiliary supercharging device provided upstream or downstream of the supercharger and operated on power other than exhaust as a power source, the controller for controlling an output torque of the internal combustion engine by adjusting volume of air taken into the internal combustion engine by an airflow rate adjusting means, the controller comprising: a target power calculating means that calculates a target power of the supercharger based on information of an intake airflow rate of the internal combustion engine; an actual power calculating means that calculates an actual power of the supercharger; an assist amount calculating means that calculates an assist amount of the auxiliary supercharging device based on a target power and an actual power of the supercharger, the assist amount corresponding to an insufficient amount of the actual power relative to the target power; and an assist control means that controls the auxiliary supercharging device by the calculated assist amount; the controller being applied to an internal combustion engine using a turbocharger having a turbine wheel rotated by exhaust power and a compressor impeller coupled to the turbine wheel via a shaft, and performing supercharging by compressing intake air by rotation of the compressor impeller, wherein turbo models of components of the turbocharger are used, the turbo models express flow of power from the turbine wheel to the compressor impeller, the actual power calculating means calculates the actual power of the supercharger by using, at least, a turbine model of the turbine wheel among the turbo models, and the target power calculating means calculates a target power of the supercharger by using, at least, a compressor model of the compressor impeller among the turbo models. 3. A controller for an internal combustion engine with a supercharger according to claim 2, wherein the actual power calculating means calculates an actual power of the supercharger by forward calculation of the turbo model by using exhaust information as an input parameter, and the target power calculating means calculates a target power of the supercharger by inverse calculation of the turbo model by using boost pressure information and intake information as input parameters. 4. A controller for an internal combustion engine with a supercharger, applied to an internal combustion engine having a supercharger for supercharging an intake air by exhaust power and a power assist device which is attached to the supercharger and directly assists power of the supercharger, the controller controlling output torque of the internal combustion engine by adjusting a fuel injection amount in a fuel injection means, the controller comprising: a target power calculating means that calculates target power of the supercharger; an actual power calculating means that calculates actual power of the supercharger; an assist amount calculating means that calculates an assist amount of the power assist device based on target power and actual power of the supercharger, the assist amount corresponding to an insufficient amount of the actual power relative to the target power; and an assist control means that controls the power assist device by the calculated assist amount; and a means that obtains an exhaust parameter of exhaust from the internal combustion engine by estimation or measurement, wherein the actual power calculating means calculates an actual power of the supercharger based on the exhaust parameter. 5. A controller for an internal combustion engine with a supercharger, applied to an internal combustion engine having a supercharger for supercharging an intake air by exhaust power and a power assist device which is attached to the supercharger and directly assists power of the supercharger, the controller controlling output torque of the internal combustion engine by adjusting a fuel injection amount in a fuel injection means, the controller comprising: a target power calculating means that calculates target power of the supercharger; an actual power calculating means that calculates actual power of the supercharger; an assist amount calculating means that calculates an assist amount of the power assist device based on target power and actual power of the supercharger, the assist amount corresponding to an insufficient amount of the actual power relative to the target power; and an assist control means that controls the power assist device by the calculated assist amount; the controller being applied to an internal combustion engine using a turbocharger having a turbine wheel rotated by exhaust power and a compressor impeller coupled to the turbine wheel via a shaft, the shaft being provided with an electric motor as the power assist device, and the internal combustion engine performing supercharging by compressing intake air by rotation of the compressor impeller, wherein turbo models of components of the turbocharger are used, the turbo models express a flow of power from the turbine wheel to the compressor impeller, the actual power calculating means calculates the actual power of the supercharger by using, at least, a turbine model of the turbine wheel among the turbo models, and the target power calculating means calculates target power of the supercharger by using, at least, a compressor model of the compressor impeller among the turbo models. 6. A controller for an internal combustion engine with a supercharger according to claim 5, wherein the actual power calculating means calculates an actual power of the supercharger by forward calculation of the turbo model by using exhaust information as an input parameter, and the target power calculating means calculates target power of the supercharger by inverse calculation of the turbo model by using boost pressure information and intake information as input parameters. 7. A method of controlling an internal combustion engine with a supercharger, applied to an internal combustion engine having a supercharger for supercharging intake air by exhaust power and an auxiliary supercharging device provided upstream or downstream of the supercharger and operated on power other than exhaust as a power source, the method comprising: calculating a target power of the supercharger based on an operating state of the internal combustion engine; calculating an actual power of the supercharger; calculating an assist amount of the auxiliary supercharging device based on a target power and an actual power of the supercharger, the assist amount corresponding to an insufficient amount of the actual power relative to the target power; controlling the auxiliary supercharging device by the calculated assist amount; and calculating an exhaust parameter of exhaust from the internal combustion engine by estimation or measurement, wherein the actual power calculating includes calculating the actual power of the supercharger based on the exhaust parameter. 8. A controller for an internal combustion engine with a supercharger, applied to an internal combustion engine having a supercharger for supercharging an intake air by an exhaust power and an auxiliary supercharging device provided upstream or downstream of the supercharger and operated on power other than exhaust as a power source, the controller for controlling an output torque of the internal combustion engine by adjusting volume of air taken into the internal combustion engine by an airflow rate adjusting means, the controller comprising: a target power calculating means that calculates a target power of the supercharger based on information of an intake airflow rate of the internal combustion engine; an actual power calculating means that calculates an actual power of the supercharger, an assist amount calculating means that calculates an assist amount of the auxiliary supercharging device based on a target power and an actual power of the supercharger, the assist amount corresponding to an insufficient amount of the actual power relative to the target power; and an assist control means that controls the auxiliary supercharging device by the calculated assist amount; wherein the actual power calculating means calculates the actual power using exhaust information as an input parameter. 9. A controller for an internal combustion engine with a supercharger, applied to an internal combustion engine having a supercharger for supercharging intake air by exhaust power and an auxiliary supercharging device provided upstream or downstream of the supercharger and operated on power other than exhaust as a power source, the controller comprising: a target power calculating means that calculates a target power of the supercharger based on operating state of the internal combustion engine; an actual power calculating means that calculates an actual power of the supercharger; an assist amount calculating means that calculates an assist amount of the auxiliary supercharging device based on a target power and an actual power of the supercharger, the assist amount corresponding to an insufficient amount of the actual power relative to the target power; and an assist control means that controls the auxiliary supercharging device by the calculated assist amount; wherein the actual power calculating means calculates the actual power using exhaust information as an input parameter. 10. A method of controlling an internal combustion engine with a supercharger, applied to an internal combustion engine having a supercharger for supercharging intake air by exhaust power and an auxiliary supercharging device provided upstream or downstream of the supercharger and operated on power other than exhaust as a power source, the method comprising: calculating a target power of the supercharger based on an operating state of the internal combustion engine; calculating an actual power of the supercharger; calculating an assist amount of the auxiliary supercharging device based on a target power and an actual power of the supercharger, the assist amount corresponding to an insufficient amount of the actual power relative to the target power; and controlling the auxiliary supercharging device by the calculated assist amount; wherein the actual power is calculated based on a calculation using exhaust information as an input parameter.
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