IPC분류정보
국가/구분 |
United States(US) Patent
등록
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국제특허분류(IPC7판) |
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출원번호 |
US-0145103
(2002-05-15)
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발명자
/ 주소 |
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출원인 / 주소 |
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대리인 / 주소 |
Finnegan, Henderson, Farabow, Garrett &
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인용정보 |
피인용 횟수 :
27 인용 특허 :
32 |
초록
▼
A method, system, and machine-readable storage medium for determining a predetermined operating condition of an internal combustion engine are disclosed. In operation, the method, system and machine-readable storage medium measure a cylinder pressure in at least one combustion chamber at a predeterm
A method, system, and machine-readable storage medium for determining a predetermined operating condition of an internal combustion engine are disclosed. In operation, the method, system and machine-readable storage medium measure a cylinder pressure in at least one combustion chamber at a predetermined point in a combustion cycle. Next, the method, system, and machine-readable storage medium determine at least a first value for an operating parameter of the engine using the measured cylinder pressure, determine a second value for the operating parameter of the engine using data received from at least one engine sensor, and then generate a predetermined signal if a difference between the first value and the second value has a predetermined relationship.
대표청구항
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1. A method for determining a predetermined operating condition of an internal combustion engine, the method comprising:measuring a cylinder pressure in at least one combustion chamber at a predetermined point in a combustion cycle; determining at least a first value for an operating parameter of th
1. A method for determining a predetermined operating condition of an internal combustion engine, the method comprising:measuring a cylinder pressure in at least one combustion chamber at a predetermined point in a combustion cycle; determining at least a first value for an operating parameter of the engine using the measured cylinder pressure; determining a second value for the operating parameter of the engine using data received from at least one engine sensor; and generating a predetermined signal if a difference between the first value and the second value has a predetermined relationship. 2. The method of claim 1, wherein the predetermined point in a combustion cycle is during at least one stroke of a combustion cycle.3. The method of claim 1, wherein the generating step includes the step of generating a predetermined signal if a difference between the first value and the second value exceeds a predetermined amount.4. The method of claim 1, further comprising controlling operation of the air-fuel ratio in response to the first value, if the difference is less than substantially +/?5%.5. The method of claim 1, further comprising controlling at least one of intake valve activation, exhaust valve activation, and turbocharger operation.6. The method of claim 1, wherein the operating parameter comprises torque.7. The method of claim 1, wherein the at least one stroke comprises a compression stroke.8. The method of claim 7, wherein the operating parameter comprises a mass of air present in a cylinder.9. The method of claim 1, wherein the at least one stroke comprises a power stroke.10. The method of claim 9, wherein the operating parameter comprises a heat release profile of at least one combustion chamber.11. The method of claim 1, wherein the at least one stroke comprises an overlap of the exhaust stroke and intake stroke.12. The method of claim 7, wherein the operating parameter comprises a residual gas measurement from at least one combustion chamber.13. A machine-readable storage medium having stored thereon machine executable instructions, the execution of said instructions adapted to implement a method for determining a predetermined operating condition of an internal combustion engine, the method comprising:measuring a cylinder pressure in at least one combustion chamber at a predetermined point in a combustion cycle; determining at least a first value for an operating parameter of the engine using the measured cylinder pressure; determining a second value for the operating parameter of the engine using data received from at least one engine sensor; and generating a predetermined signal if a difference between the first value and the second value has a predetermined relationship. 14. The machine-readable storage medium of claim 13, wherein the predetermined point in a combustion cycle is during at least one stroke of a combustion cycle.15. The machine-readable storage medium of claim 13, wherein the generating step includes the step of generating a predetermined signal if a difference between the first value and the second value exceeds a predetermined amount.16. The machine-readable storage medium of claim 13, wherein the predetermined point in a combustion cycle is during at least one stroke of a combustion cycle.17. The machine-readable storage medium of claim 13, further including controlling operation of the air-fuel ratio in response to the first value, if the difference is less than substantially +/?5%.18. The machine-readable storage medium of claim 13, further including controlling at least one of intake valve activation, exhaust valve activation, and turbocharger operation.19. The machine-readable storage medium of claim 13, wherein the operating parameter is torque.20. The machine-readable storage medium of claim 13, wherein the at least one stroke comprises a compression stroke.21. The machine-readable storage medium of claim 20, wherein the operating parameter comprises a mass of air present in a cylinder.22. The machine-readable storage medium of claim 13, wherein the at least one stroke comprises a power stroke.23. The machine-readable storage medium of claim 22, wherein the operating parameter comprises a heat release profile of at least one combustion chamber.24. The machine-readable storage medium of claim 13, wherein the at least one stroke is an overlap of the exhaust stroke and intake stroke.25. The machine-readable storage medium of claim 22, wherein the operating parameter comprises a residual gas measurement from at least one combustion chamber.26. An apparatus for determining a predetermined operating condition of an internal combustion engine, the apparatus comprising:a module configured to measure a cylinder pressure in at least one combustion chamber at a predetermined point in a combustion cycle; a module configured to determine at least a first value for an operating parameter of the engine using the measured cylinder pressure; a module configured to determine a second value for the operating parameter of the engine using data received from at least one engine sensor; and a module configured to generate a predetermined signal if a difference between the first value and the second value has a predetermined relationship. 27. The apparatus of claim 26, wherein the predetermined point in a combustion cycle is during at least one stroke of a combustion cycle.28. The apparatus of claim 26, wherein the module configured to generate a predetermined signal includes a module configured to generate a predetermined signal if a difference between the first value and the second value exceeds a predetermined amount.29. The apparatus of claim 26, further including a module configured to control operation of the air-fuel ratio in response to the first value, if the difference is less than substantially +/?5%.30. The apparatus of claim 26, further including a module adapted to control at least one of intake valve activation, exhaust valve activation, and turbocharger operation.31. The apparatus of claim 30, wherein the plurality of modules comprise functionally related computer program code and data.32. The apparatus of claim 26, wherein the operating parameter is torque.33. The apparatus of claim 26, wherein the at least one stroke comprises a compression stroke.34. The apparatus of claim 33, wherein the operating parameter comprises a mass of air present in a cylinder.35. The apparatus of claim 26, wherein the at least one stroke comprises a power stroke.36. The apparatus of claim 35, wherein the operating parameter comprises a heat release profile of at least one combustion chamber.37. The apparatus of claim 26, wherein the at least one stroke comprises an overlap of the exhaust stroke and intake stroke.38. The apparatus of claim 35, wherein the operating parameter comprises a residual gas measurement from at least one combustion chamber.
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