Method for determining the exhaust pressure of a turbocharged internal combustion engine
원문보기
IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
UP-0632844
(2005-07-11)
|
등록번호 |
US-7665448
(2010-04-09)
|
우선권정보 |
FR-04 08113(2004-07-22) |
국제출원번호 |
PCT/EP2005/007482
(2005-07-11)
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§371/§102 date |
20070320
(20070320)
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국제공개번호 |
WO06/008019
(2006-01-26)
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발명자
/ 주소 |
- Carbonne, Laure
- Cremona, Patrick
- Rouphael, Roger
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출원인 / 주소 |
- Continental Automotive France
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대리인 / 주소 |
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인용정보 |
피인용 횟수 :
0 인용 특허 :
1 |
초록
▼
A method for determining the exhaust pressure (Pr) of a turbocharged internal combustion engine, including a solenoid by-pass valve for the exhaust gas, characterized in that an exhaust pressure (Pi) is determined as a function of the inlet air flow to the engine, (Ar), the engine speed (Rr) and the
A method for determining the exhaust pressure (Pr) of a turbocharged internal combustion engine, including a solenoid by-pass valve for the exhaust gas, characterized in that an exhaust pressure (Pi) is determined as a function of the inlet air flow to the engine, (Ar), the engine speed (Rr) and the degree of opening of the solenoid exhaust by-pass valve (Tr), by interpolation from a reference map having exhaust gas pressure values (Pc) for given inlet air flow values (Ac), the engine speed (Rc) and the degree of opening of the solenoid exhaust by-pass valve (Tc), and the exhaust pressure determined by the interpolation (Pi) is corrected as a function of ambient pressure values (Pa, Po).
대표청구항
▼
The invention claimed is: 1. A method of determining the exhaust pressure (Pr) of a turbocharged internal combustion engine comprising a wastegate, characterized in that an exhaust pressure (Pi) is determined, as a function of the engine intake air flow rate (Ar), of the engine speed (Rr) and of th
The invention claimed is: 1. A method of determining the exhaust pressure (Pr) of a turbocharged internal combustion engine comprising a wastegate, characterized in that an exhaust pressure (Pi) is determined, as a function of the engine intake air flow rate (Ar), of the engine speed (Rr) and of the degree of wastegate opening (Tr), by an interpolation from a reference map comprising exhaust pressure values (Pc) for defined values of the intake air flow rate (Ac), of the engine speed (Rc) and of the degree of wastegate opening (Tc), the exhaust pressure determined by the interpolation (Pi) is corrected, as a function of the ambient pressure prevailing during the determination of the exhaust pressure (Pa) and of the ambient pressure prevailing during the production of the map (Po), according to the formula which follows: P r = P i ( P i ( 1 - P a P o K - P a ) + K P a P o - P a K - P a ) in which Pr is the corrected exhaust pressure, Pi is the exhaust pressure determined by the interpolation, Po is the ambient pressure prevailing during the production of the map, Pa is the ambient pressure prevailing during the determination of the exhaust pressure, and K is a corrective factor which is specific to the type of engine for which the map was produced and which is predetermined on a test bench by calibrating measurements at different ambient pressures. 2. The method as claimed in claim 1, characterized in that the interpolation used is a linear interpolation. 3. The method as claimed in claim 1, characterized in that the degree of wastegate opening (Tc) is represented by the actual position of the wastegate measured by a sensor. 4. The method as claimed in claim 1, characterized in that the degree of wastegate opening (Tc) is represented by the value of the wastegate control. 5. The method as claimed in claim 4, characterized in that the wastegate control is the applied control less the adaptation corrections. 6. A method of regulating a turbocharged internal combustion engine as a function of the exhaust pressure, characterized in that the exhaust pressure is determined as claimed in claim 1. 7. The method as claimed in claim 2, characterized in that the degree of wastegate opening (Tc) is represented by the actual position of the wastegate measured by a sensor. 8. The method as claimed in claim 2, characterized in that the degree of wastegate opening (Tc) is represented by the value of the wastegate control. 9. The method as claimed in claim 3, characterized in that the degree of wastegate opening (Tc) is represented by the value of the wastegate control. 10. A method of regulating a turbocharged internal combustion engine as a function of the exhaust pressure, characterized in that the exhaust pressure is determined as claimed in claim 2. 11. A method of regulating a turbocharged internal combustion engine as a function of the exhaust pressure, characterized in that the exhaust pressure is determined as claimed in claim 3. 12. A method of regulating a turbocharged internal combustion engine as a function of the exhaust pressure, characterized in that the exhaust pressure is determined as claimed in claim 4. 13. A method of regulating a turbocharged internal combustion engine as a function of the exhaust pressure, characterized in that the exhaust pressure is determined as claimed in claim 5.
이 특허에 인용된 특허 (1)
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Engel, Gerhard; Birk, Manfred; Meier, Frank; Bleile, Thomas; Kraus, Benedikt; Rupp, Peter; Kraemer, Wolfgang, Method and device for controlling an internal combustion engine that is provided with an air system.
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