[특허]Method and apparatus for controlling an internal combustion engine using combustion chamber pressure sensing

Cummins Westport Inc.

검색어에 아래의 연산자를 사용하시면 더 정확한 검색결과를 얻을 수 있습니다.
검색연산자

검색도움말
검색연산자	기능	검색시 예
()	우선순위가 가장 높은 연산자	예1) (나노 (기계 \| machine))
공백	두 개의 검색어(식)을 모두 포함하고 있는 문서 검색	예1) (나노 기계) 예2) 나노 장영실
\|	두 개의 검색어(식) 중 하나 이상 포함하고 있는 문서 검색	예1) (줄기세포 \| 면역) 예2) 줄기세포 \| 장영실
!	NOT 이후에 있는 검색어가 포함된 문서는 제외	예1) (황금 !백금) 예2) !image
*	검색어의 *란에 0개 이상의 임의의 문자가 포함된 문서 검색	예) semi*
""	따옴표 내의 구문과 완전히 일치하는 문서만 검색	예) "Transform and Quantization"

과학기술 지식인프라 ScienceON

연합인증

연합인증 가입 기관의 연구자들은 소속기관의 인증정보(ID와 암호)를 이용해 다른 대학, 연구기관, 서비스 공급자의 다양한 온라인 자원과 연구 데이터를 이용할 수 있습니다.

이는 여행자가 자국에서 발행 받은 여권으로 세계 각국을 자유롭게 여행할 수 있는 것과 같습니다.

연합인증으로 이용이 가능한 서비스는 NTIS, DataON, Edison, Kafe, Webinar 등이 있습니다.

한번의 인증절차만으로 연합인증 가입 서비스에 추가 로그인 없이 이용이 가능합니다.

다만, 연합인증을 위해서는 최초 1회만 인증 절차가 필요합니다. (회원이 아닐 경우 회원 가입이 필요합니다.)

연합인증 절차는 다음과 같습니다.

최초이용시에는
ScienceON에 로그인 → 연합인증 서비스 접속 → 로그인 (본인 확인 또는 회원가입) → 서비스 이용

그 이후에는
ScienceON 로그인 → 연합인증 서비스 접속 → 서비스 이용

연합인증을 활용하시면 KISTI가 제공하는 다양한 서비스를 편리하게 이용하실 수 있습니다.

특허 상세정보

MyON담기

내보내기 페이스북 공유 트위터 공유 카카오톡 공유

Method and apparatus for controlling an internal combustion engine using combustion chamber pressure sensing

특허상세정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	F02P-005/153
미국특허분류(USC)	123/435; 123/299; 123/406.42; 701/105
출원번호	US-0679026 (2003-10-03)
발명자 / 주소	Zurloye,Axel Ruthmansdorfer,Dave Frazier,Tim Rumsey,Jennifer
출원인 / 주소	Cummins Westport Inc.
대리인 / 주소	McAndrews, Held &
인용정보	피인용 횟수 : 23 인용 특허 : 45

초록
▼

The present method and apparatus employ a signal indicative of cylinder pressure within the combustion chamber of an internal combustion engine to control combustion phasing or start of combustion (SOC) in subsequent cycles of the engine where the engine is driven by combustion of both a fuel/air premixed charge and a directly injected quantity of fuel. A ratio of signals indicative of pre-combustion pressure and post-combustion pressure within a cycle are employed to estimate SOC and then, based on a predetermined target SOC, an ignition lever is employ...

대표
청구항
▼

What is claimed is: 1. A method of controlling combustion of a fuel within a combustion chamber of an internal combustion engine, said method comprising: (a) during a cycle of said internal combustion engine: (1) introducing an intake charge into said combustion chamber during an intake event of said cycle, said combustion chamber partially defined by a piston, (2) introducing a first quantity of said fuel into said combustion chamber during said intake event or a compression event of said cycle, wherein said first quantity of said fuel and said intake charge are compressed and premixed at or near completion of said compression event, (3) directly injecting a second quantity of said fuel into said combustion chamber when said piston is near top dead center, (4) burning said fuel in said combustion chamber during a power event of said cycle, (5) to a controller, delivering a pre-combustion sensor signal (P(A)) determined prior to combustion of said first quantity of said fuel and a first post-ignition sensor signal (P(B)) determined during combustion of said fuel, said sensor signals being indicative of a pressure within said combustion chamber, (b) calculating an estimated SOC of said first quantity of said fuel within said combustion chamber from said pre-combustion sensor signal and said first post-ignition sensor signal, (c) during a subsequent cycle of said engine, varying an ignition lever if said estimated SOC of said first quantity of said fuel is different than a predetermined target SOC of said first quantity of said fuel. 2. The method of claim 1 wherein said estimated SOC is determined by employing a ratio of said pre-combustion sensor signal and said first post-ignition sensor signal. 3. The method of claim 1 wherein said estimated SOC is determined from a difference between said pro-combustion sensor signal and said first post-ignition sensor signal. 4. The method of claim 1 further comprising delivering to said controller, a second post-ignition signal (P(C)) determined prior to completion of said power event of said cycle, wherein said second post-ignition sensor signal is also employed to calculate said estimated SOC of said first quantity of said fuel within said combustion chamber. 5. The method of claim 4 wherein said estimated SOC is determined by employing at least one ratio (Pratio) of said pro-combustion sensor signal and at least one of said first post-ignition sensor signal and said second post-ignition sensor signal. 6. The method of claim 5 wherein said first post-ignition sensor signal is determined at a first crank angle, said first crank angle being less than a peak pressure crank angle, said peak pressure crank angle corresponding to a peak cylinder pressure within said combustion chamber during said cycle of said engine. 7. The method of claim 1 wherein said first post-ignition sensor signal is determined at a first crank angle, said first crank angle being greater than a peak pressure crank angle, said peak pressure crank angle corresponding to a peak cylinder pressure within said combustion chamber during said cycle of said engine. 8. The method of claim 6 wherein said second post-ignition sensor signal is determined at a second crank angle, said second crank angle being greater than said peak pressure crank angle. 9. The method of any one of claims 5 and 8 wherein said at least one ratio is 10. The method of claim 5 wherein said estimated SOC is directly proportional to said at least one ratio. 11. The method of any one of claims 5 and 8 wherein a first pre-determined constant (K1)and a second predetermined constant (K2) are employed to determine said estimated SOC, said estimated SOC being equal to K1Pratio+K2. 12. The method of any one of claims 1 and 8 wherein said predetermined target SOC is set by said controller based on an engine speed indicative of a cycle engine speed during said cycle and a boost pressure indicative of an engine load during said cycle. 13. The method of claim 12 wherein said engine speed and said boost pressure are measured. 14. The method of any one of claims 5 and 8 wherein said at least one ratio includes a first ratio and a second ratio, said first ratio being and said second ratio being said first ratio being indicative of a first estimated SOC and said second ratio being indicative of a second estimated SOC, said first estimated SOC and said second estimated SOC being indicative of said estimated SOC. 15. The method of claim 14 wherein said first ratio and said second ratio are employed to calculate said first estimated SOC and said second estimated SOC, said first estimated SOC and said second estimated SOC being employed to determine said estimated SOC. 16. The method of claim 9 wherein an n number of constants are employed to determine said estimated SOC, said estimated SOC being equal to K1(Pratio)n-1+K2(P ratio)n-2 . . . Kn-1(Pratio)+Kn. 17. The method of claim 1 wherein said ignition lever is glow plug temperature, said engine comprising a glow plug in fluid communication with said combustion chamber. 18. The method of claim 1 wherein said ignition lever is said first quantity of said fuel. 19. The method of any one of claims 1 through 8 wherein said first quantity of said fuel comprises a first fuel and a pilot fuel and said second quantity of said fuel comprises a second injected fuel, said pilot fuel being more auto-ignitable than said first fuel. 20. The method of claim 19 wherein said pilot fuel is directly injected into said combustion chamber. 21. The method of claim 20 wherein said ignition lever is at least one of pilot fuel quantity, pilot fuel timing and first fuel quantity. 22. The method of claim 21 wherein said first fuel and said second injected fuel have the same composition. 23. The method of claim 22 wherein each of said first fuel and said second injected fuel is a gaseous fuel. 24. The method in claim 23 wherein said gaseous fuel is one of hydrogen and natural gas. 25. The method of claim 24 wherein said first fuel comprises hydrogen and said second injected fuel comprises natural gas. 26. The method in any one of claims 1 through 8 wherein said fuel is a gaseous fuel. 27. The method in claim 26 wherein said gaseous fuel is one of hydrogen and natural gas. 28. The method in claim 27 wherein said gaseous fuel comprises at least one of hydrogen and natural gas. 29. A control apparatus for controlling SOC of a fuel in a combustion chamber of an internal combustion engine, wherein said fuel comprises a pilot fuel and a first fuel, said pilot fuel being more auto-ignitable than said first fuel, said engine comprising an injector and a manifold for introducing said fuel into said combustion chamber and, said control apparatus comprising: (a) a controller, said controller being in communication with an ignition lever capable of adjusting SOC of said fuel within said combustion chamber, and (b) a sensor for directing to said controller a pre-combustion signal and a post-ignition signal, said signals indicative of changes in pressure in the combustion chamber, said sensor in communication with said controller, and wherein said controller is capable of directing said ignition lever in response to said pre-combustion signal and said post-ignition signal. 30. The control apparatus of claim 29 wherein said sensor is an optical sensor in direct communication with said combustion chamber. 31. The control apparatus of claim 30 wherein said sensor is disposed in a fire deck, said fire deck partially defining said combustion chamber. 32. The control apparatus of claim 31 wherein said sensor is a strain gauge in communication with said fire deck. 33. The control apparatus of claim 29 wherein said fuel further comprises a second injected fuel. 34. The control apparatus of claim 33 wherein said injector is capable of injecting, in addition to said second injected fuel, said pilot fuel and capable of adjusting timing and quantity of said pilot fuel. 35. The control apparatus of any one of claims 33 and 34, wherein said ignition lever is pilot fuel quantity. 36. The control apparatus of claim 34 wherein said ignition lever is said timing of said pilot fuel. 37. The control apparatus of claim 33, wherein a quantity of said first fuel is capable of being adjusted in said manifold, adjusting of said quantity of said first fuel being said ignition lever. 38. The control apparatus of claim 29 wherein ignition lever is a glow plug in fluid communication with said combustion chamber. 39. The control apparatus of claim 29 wherein said pilot fuel is diesel fuel. 40. The control apparatus of claim 33 wherein said first fuel and said second injected fuel have the same composition. 41. The control apparatus of claim 40 wherein each of said first fuel and said second injected fuel is a gaseous fuel. 42. The control apparatus of claim 29 wherein said main fuel is a gaseous fuel. 43. The control apparatus of claim 29 wherein said fuel is a gaseous fuel. 44. The control apparatus of claim 43 wherein said gaseous fuel is natural gas. 45. The control apparatus of claim 29 wherein said main fuel is a gaseous fuel and said pilot fuel is diesel fuel. 46. The control apparatus of claim 43 wherein said gaseous fuel comprises at least one of hydrogen and natural gas. 47. A method of controlling combustion of a main fuel within a combustion chamber of an internal combustion engine, said method comprising: (a) during a cycle of said internal combustion engine: (1) introducing an intake charge into said combustion chamber during an intake event of said cycle, (2) introducing a first quantity of said main fuel into said combustion chamber during said intake event or a compression event of said cycle, (3) introducing a first quantity of a pilot fuel into said combustion chamber at a pilot timing during said intake event or said compression event of said engine, wherein said first quantity of said main fuel, said first quantity of said pilot fuel and said intake charge are compressed and premixed into an auto-ignitable fuel/air charge at or near completion of said compression event said pilot fuel is more auto-ignitable than said main fuel, (4) directly injecting a second quantity of said main fuel into said combustion chamber when a piston partially defining said combustion chamber is near top dead center, (5) to a controller, delivering a pre-combustion sensor signal (P(A)) determined prior to combustion of said auto-ignitable fuel/air charge and at least one post-ignition sensor signal determined during combustion of said main fuel, said sensor signals being indicative of a pressure within said combustion chamber, (b) calculating at least one ratio (Pratio) from said pre-combustion sensor signal and said at least one post-ignition sensor signal, said at least one ratio being indicative of an estimated SOC of said auto-ignitable fuel/air charge within said combustion chamber, (c) during a subsequent cycle of said engine, varying at least one of said first quantity of said pilot fuel, said pilot timing, said first quantity of said main fuel, if said estimated SOC of said auto-ignitable fuel/air charge is different than a predetermined target SOC of said auto-ignitable fuel/air charge. 48. The method of claim 47 wherein two post-ignition sensor signals are delivered to said controller, said two post-ignition sensor signals being a first post-ignition sensor signal (P(B)) and a second post-ignition sensor signal (P(C)). 49. The method of claim 48 wherein said first post-ignition sensor signal is determined at a first crank angle, said first crank angle being less than a peak pressure crank angle, said peak pressure crank angle corresponding to a peak cylinder pressure within said combustion chamber during said cycle of said engine. 50. The method of claim 49 wherein said second post-ignition sensor signal is determined at a second crank angle, said second crank angle being greater than said peak pressure crank angle. 51. The method of any one of claims 48 and 50 wherein said at least one ratio is 52. The method of claim 51 further comprising calculating said estimated SOC from said at least one ratio. 53. The method of claim 52 wherein a first pre-determined constant (K1) and a second predetermined constant (K2) are employed to determine said estimated SOC, said estimated SOC being equal to K1Pratio+K2. 54. The method of claim 52 wherein an n number of constants are employed to determine said estimated SOC, said estimated SOC being equal to K1(Pratio)n-1+K2(P ratio)n-2 . . . Kn-1(Pratio)+Kn. 55. The method of claim 50 wherein said at least one ratio includes a first ratio and a second ratio, said first ratio being and said second ratio being said first ratio being indicative of a first estimated SOC and said second ratio being indicative of a second estimated SOC, said first estimated SOC and said second estimated SOC being indicative of said estimated SOC. 56. The method in any one of claims 49, 50 and 55 wherein said main fuel is a gaseous fuel. 57. The method in claim 56 wherein said gaseous fuel is one of hydrogen and natural gas. 58. The method in claim 57 wherein said gaseous fuel comprises at least one of hydrogen and natural gas.

이 특허에 인용된 특허 (45)

이 특허를 인용한 특허 피인용횟수: 23

IPC 상위 출원인

내보내기

상세정보
내보내기 구분	파일저장 인쇄 메일전송
구성항목	관리번호, 국가코드, 자료구분, 상태, 출원번호, 출원일자, 공개번호, 공개일자, 등록번호, 등록일자, 발명명칭(한글), 발명명칭(영문), 출원인(한글), 출원인(영문), 출원인코드, 대표IPC 관리번호, 국가코드, 자료구분, 상태, 출원번호, 출원일자, 공개번호, 공개일자, 공고번호, 공고일자, 등록번호, 등록일자, 발명명칭(한글), 발명명칭(영문), 출원인(한글), 출원인(영문), 출원인코드, 대표출원인, 출원인국적, 출원인주소, 발명자, 발명자E, 발명자코드, 발명자주소, 발명자 우편번호, 발명자국적, 대표IPC, IPC코드, 요약, 미국특허분류, 대리인주소, 대리인코드, 대리인(한글), 대리인(영문), 국제공개일자, 국제공개번호, 국제출원일자, 국제출원번호, 우선권, 우선권주장일, 우선권국가, 우선권출원번호, 원출원일자, 원출원번호, 지정국, Citing Patents, Cited Patents
저장형식	Text(ASCII format) Excel format PIAS분석(.xls)
메일정보	받는사람 (필수) @ 보내는사람 (선택) @ 제목 내용 KISTI 검색결과 이메일 서비스
안내	> 총 건의 자료가 검색되었습니다. > 다운받으실 자료의 인덱스를 입력하세요. (1-10,000) > 검색결과의 순서대로 최대 10,000건 까지 다운로드가 가능합니다. > 데이타가 많을 경우 속도가 느려질 수 있습니다.(최대 2~3분 소요) > 다운로드 파일은 UTF-8 형태로 저장됩니다. 파일의 내용이 제대로 보이지 않을실 때는 웹브라우저 상단의 보기 -> 인코딩 -> 자동선택 여부를 확인하십시오 > ~ > Text(ASCII format) Excel format

과학기술 지식인프라 ScienceON

ScienceON Chatbot

연합인증

특허 상세정보

Method and apparatus for controlling an internal combustion engine using combustion chamber pressure sensing

초록
▼

대표
청구항
▼

이 특허에 인용된 특허 (45)

이 특허를 인용한 특허 피인용횟수: 23

IPC 상위 출원인

과제정보

상세정보조회

원문조회

IPC 상세정보(version : 201201)

연구과제 성과물(0)

참여연구원의 다른 문헌(0)

처리중입니다.

잠시만 기다려주세요.

ScienceON Chatbot

연합인증

특허 상세정보

Method and apparatus for controlling an internal combustion engine using combustion chamber pressure sensing

초록 ▼

대표청구항 ▼

이 특허에 인용된 특허 (45)

이 특허를 인용한 특허 피인용횟수: 23

IPC 상위 출원인

과제정보

상세정보조회

원문조회

IPC 상세정보(version : 201201)

연구과제 성과물(0)

참여연구원의 다른 문헌(0)

처리중입니다.

잠시만 기다려주세요.

초록
▼

대표
청구항
▼