[특허]Hydraulic valve actuation systems and methods to provide variable lift for one or more engine air valves

Sturman Industries, 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

Hydraulic valve actuation systems and methods to provide variable lift for one or more engine air valves

특허상세정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	F01L-009/02 F01L-009/00
미국특허분류(USC)	123/090.12; 123/090.15; 123/090.24; 251/285; 251/284
출원번호	US-0102192 (2005-04-08)
등록번호	US-7387095 (2008-06-17)
발명자 / 주소	Babbitt,Guy Robert Raimao,Miguel Angelo Klose,Charles Conrad Rogers,Jeffrey Allen Sturman,Oded Eddie
출원인 / 주소	Sturman Industries, Inc.
대리인 / 주소	Blakely Sokoloff Taylor & Zafman LLP
인용정보	피인용 횟수 : 6 인용 특허 : 27

초록
▼

Hydraulic valve actuation systems and methods to provide variable lift for one or more engine air valves by way of a variable position hard stop. Various embodiments are disclosed, including embodiments controlling lift by providing a choice of two different fixed stops, three different fixed stops, stops continuously variable throughout a range of lifts, and a fixed stop and stops continuously variable throughout a range of lifts. The valves controlled by a variable position hard stop may be a single engine intake or exhaust valve, or multiple valves of any number, and of either intake or exhaust valves or both, or of one intake or one exhaust valve for one or more cylinders in engines having more than one intake or exhaust valve per cylinder. Dashpot deceleration of engine valve velocity on opening to the hard stop and on engine valve closure is disclosed, as are other aspects and embodiments of the invention.

대표
청구항
▼

What is claimed is: 1. An engine valve actuation system comprising: in a camless engine; a first actuator configured to actuate an engine valve between an engine valve closed position and engine valve open positions; a second actuator moveable between first and second positions, when in the first position the second actuator being configured to define a stop limiting the engine valve opening to a first lift, and when in the second position the second actuator being configured to define a stop limiting the engine valve opening to a second lift different from the first lift, the first and second actuators being hydraulic actuators; and, said camless engine having a unidirectional dashpot operative in a single direction only, and limiting engine valve velocity as the engine valve approaches either of the first and second lifts. 2. The system of claim 1 further comprised of a sensor for providing a signal indicative of the position of the second actuator. 3. The system of claim 2 wherein the sensor provides a signal responsive to the position of an engine valve. 4. The system of claim 2 wherein the sensor provides a signal responsive to the position of the second actuator. 5. The system of claim 2 wherein the second actuator may be positioned at positions ranging from the first to the second position responsive to an output of the sensor to define lifts between the first and second lift, the unidirectional dashpot limiting engine valve velocity as the engine valve approaches any lift defined by the second actuator. 6. The system of claim 1 wherein the second actuator defines stops to limit the lift of multiple engine valves. 7. The system of claim 6 wherein the multiple engine valves include intake and exhaust valves for a single cylinder of an engine. 8. The system of claim 6 wherein the multiple engine valves include intake valves for multiple cylinders of an engine. 9. The system of claim 6 wherein the multiple engine valves include exhaust valves for multiple cylinders of an engine. 10. The system of claim 6 wherein the second actuator defines stops for multiple engine valves and further comprised of multiple unidirectional dashpots limiting multiple engine valve velocities as the engine valves approach any lift defined by the second actuator. 11. The system of claim 1 wherein the first actuator includes first and second pistons, the first piston having a stroke defining a third engine valve lift different from the first and second engine valve lifts, the second piston having a stroke at least equal to the larger of the first and second engine valve lifts. 12. The system of claim 11 further comprised of electromagnetically actuated control valving to selectively pressurize the first and second pistons. 13. The system of claim 1 further comprised of electromagnetically actuated control valving coupled to control a plurality of first actuators, and wherein each first actuator is configured to actuate at least one engine valve between an engine valve closed position and engine valve open positions. 14. The system of claim 1 wherein the second actuator defines stops to limit the lift of multiple engine valves, and further comprised of a position sensor indicative of the lift of the engine valves. 15. The system of claim 14 wherein the position sensor is configured to sense the position of the second actuator. 16. The system of claim 14 further comprised of a control system responsive to the position sensor to position the second actuator at positions ranging from the first to the second position. 17. The system of claim 1 wherein the first actuator is configured to actuate a plurality of engine valves between an engine valve closed position and engine valve open positions. 18. A hydraulic engine valve actuation system comprising: in a camless engine: a first hydraulic actuator configured to actuate an engine valve between an engine valve closed position and engine valve open positions; a second hydraulic actuator moveable between first and second positions, when in the first position the second actuator being configured to define a stop limiting the engine valve opening to a first lift, and when in the second position the second actuator being configured to define a stop limiting the engine valve opening to a second lift different from the first lift, said camless engine having a unidirectional dashpot, operative in a single direction only, associated at least in part with the second hydraulic actuator and configured to limit engine valve velocity as the engine valve approaches either of the first and second lifts. 19. The system of claim 18 further comprised of a sensor for providing a signal indicative of the position of the second actuator. 20. The system of claim 19 wherein the sensor provides a signal responsive to the position of an engine valve. 21. The system of claim 19 wherein the sensor provides a signal responsive to the position of the second actuator. 22. The system of claim 19 wherein the second actuator may be positioned at positions ranging from the first to the second position responsive to an output of the sensor to define lifts between the first and second lifts, the unidirectional dashpot limiting engine valve velocity as the engine valve approaches any lift defined by the second actuator. 23. The system of claim 22 wherein the first actuator includes first and second pistons, the first piston having a stroke defining a third engine valve lift different from the first arid second engine valve lifts, the second piston having a stroke at least equal to the larger of the first and second engine valve lifts. 24. The system of claim 23 further comprised of electromagnetically actuated control valving to selectively pressurize the first and second pistons. 25. The system of claim 18 wherein the second actuator defines stops to limit the lift of multiple engine valves. 26. The system of claim 25 wherein the multiple engine valves include intake and exhaust valves for a single cylinder of an engine. 27. The system of claim 25 wherein the multiple engine valves include intake valves for multiple cylinders of an engine. 28. The system of claim 25 wherein the multiple engine valves include exhaust valves for multiple cylinders of an engine. 29. The system of claim 18 wherein the first actuator includes first and second pistons, the first piston having a stroke defining a third engine valve lift different from the first and second engine valve lifts, the second piston having a stroke at least equal to the larger of the first and second engine valve lifts. 30. The system of claim 29 further comprised of electromagnetically actuated control valving to selectively pressurize the first and second pistons. 31. The system of claim 18 wherein the second actuator defines stops to limit the lift of multiple engine valves, and further comprised of a position sensor indicative of the lift of the engine valves. 32. The system of claim 31 wherein the position sensor is configured to sense the position of the second actuator. 33. The system of claim 31 further comprised of a control system responsive to the position sensor to position the second actuator at positions ranging, from the first to the second position responsive to an output of the sensor. 34. The system of claim 18 further comprised of electromagnetically actuated control valving coupled to control a plurality of first actuators, and wherein each first actuator is configured to actuate at least one engine valve between an engine valve closed position and engine valve open positions. 35. The system of claim 18 wherein the first actuator is configured to actuate a plurality of engine valves between an engine valve closed position and engine valve open positions. 36. The system of claim 22 wherein the second actuator defines stops for multiple engine valves and further comprised of multiple unidirectional dashpots limiting multiple engine valve velocities as the engine valves approach a lift defined by the second actuator.

이 특허에 인용된 특허 (27)

이 특허를 인용한 특허 피인용횟수: 6

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

Hydraulic valve actuation systems and methods to provide variable lift for one or more engine air valves

초록
▼

대표
청구항
▼

이 특허에 인용된 특허 (27)

이 특허를 인용한 특허 피인용횟수: 6

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

Hydraulic valve actuation systems and methods to provide variable lift for one or more engine air valves

초록 ▼

대표청구항 ▼

이 특허에 인용된 특허 (27)

이 특허를 인용한 특허 피인용횟수: 6

IPC 상위 출원인

과제정보

상세정보조회

원문조회

IPC 상세정보(version : 201201)

연구과제 성과물(0)

참여연구원의 다른 문헌(0)

처리중입니다.

잠시만 기다려주세요.

초록
▼

대표
청구항
▼