[특허]Engine valve actuator

Caterpillar Inc.

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특허 상세정보

MyON담기

내보내기 페이스북 공유 트위터 공유 카카오톡 공유

Engine valve actuator

특허상세정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	F01L-009/02
미국특허분류(USC)	123/090.12; 123/090.45; 123/090.46; 123/090.52
출원번호	US-0263799 (2002-10-04)
발명자 / 주소	Chang, David Y.
출원인 / 주소	Caterpillar Inc.
대리인 / 주소	Finnegan, Henderson, Farabow, Garrett &
인용정보	피인용 횟수 : 3 인용 특허 : 36

초록
▼

An engine valve actuator for an internal combustion engine is provided. The engine valve actuator includes a housing having an opening and a first fluid passageway leading to the opening. An adjustment member is disposed in the housing and includes a protrusion that extends into the opening of the housing. A piston is disposed in the opening of the housing and has a bore adapted to receive the protrusion, a chamber, and a second fluid passageway that connects the bore with the chamber. The piston is adapted to move in a first direction relative to the housing in response to an introduction of pressurized fluid into the first fluid passageway. The piston moves in the first direction until the protrusion substantially withdraws from the bore. A push rod is operatively engaged with the piston such that movement of the piston in the first direction causes a corresponding movement of the push rod to thereby engage and open the engine valve.

대표
청구항
▼

1. An engine valve actuator for an internal combustion engine, comprising:a housing having an opening and a first fluid passageway leading to the opening; an adjustment member disposed in the housing and including a protrusion extending into the opening of the housing; a piston disposed in the opening of the housing and having a bore adapted to receive the protrusion, a chamber, and a second fluid passageway connecting the bore with the chamber, the piston adapted to move in a first direction relative to the housing in response to an introduction of pressurized fluid into the first fluid passageway, the piston moving in the first direction until the protrusion substantially withdraws from the bore; and a push rod operatively engaged with the piston such that movement of the piston in the first direction causes a corresponding movement of the push rod to thereby engage and open the engine valve; and a piston return spring acting on the piston to move the piston into engagement with the protrusion, wherein the piston return spring and the push rod are disposed in the chamber of the piston. 2. The engine valve actuator of claim 1, wherein the protrusion of the adjustment member includes a chamfered edge.3. The engine valve actuator of claim 2, wherein the bore of the piston includes a chamfered edge.4. The engine valve actuator of claim 1, wherein the piston includes a pressure surface and the adjustment member includes a shoulder adapted to engage a portion of the pressure surface.5. The engine valve actuator of claim 1, wherein the adjustment member and the housing include corresponding threads that allow the adjustment member to be moved relative to the housing to adjust the distance that the protrusion projects into the opening.6. The engine valve actuator of claim 5, further including a nut engageable with the threads of the adjustment member to secure the adjustment member relative to the housing.7. An engine, comprising:an engine block defining a cylinder; a piston slidably disposed in the cylinder; an engine valve moveable between a first position where a flow of fluid relative to the engine valve is prevented and a second position where a flow of fluid relative to the engine valve is allowed; a housing having a first fluid passageway leading to an opening; an adjustment member disposed in the housing and having a protrusion extending into the opening of the housing; a piston disposed in the opening of the housing and having a bore adapted to receive the protrusion, a chamber, and a second fluid passageway connecting the bore with the chamber, the piston adapted to move in a first direction relative to the housing in response to an introduction of pressurized fluid into the first fluid passageway, the piston moving in the first direction until the protrusion substantially withdraws from the bore; and a push rod operatively engaged with the piston such that movement of the piston in the first direction causes a corresponding movement of the push rod to thereby engage and move the engine valve towards the second position. a piston return spring acting on the piston to move the piston into engagement with the protrusion, wherein the piston return spring and the push rod are disposed in the chamber of the piston. 8. The engine of claim 7, further including a valve return spring acting to move the engine valve towards the first position.9. The engine of claim 7, wherein the protrusion of the adjustment member includes a chamfered edge.10. The engine of claim 9, wherein the bore of the piston includes a chamfered edge.11. The engine of claim 7, wherein the piston includes a pressure surface and the adjustment member includes a shoulder adapted to engage a portion of the pressure surface.12. The engine of claim 7, wherein the adjustment member and the housing include corresponding threads that allow the adjustment member to be moved relative to the housing to adjust the distance that the protrusion projects into the opening.13. The engine of claim 12, further including a nut engageable with the threads of the adjustment member to secure the adjustment member relative to the housing.14. An engine valve actuator for an internal combustion engine, comprising:a housing having an opening and a first fluid passageway leading to the opening; an adjustment member disposed in the housing and including a protrusion extending into the opening of the housing; a variable displacement pump fluidly connected to the first fluid passageway; a control valve disposed between the pump and the first fluid passageway, the control valve having a first position where fluid flows relative to the control valve and a second position where fluid is blocked from flowing relative to the control valve; a piston disposed in the opening of the housing and having a bore adapted to receive the protrusion, a chamber, and a second fluid passageway connecting the bore with the chamber, the piston adapted to move in a first direction relative to the housing in response to a flow of fluid through the control valve, the piston moving in the first direction until the protrusion substantially withdraws from the bore, wherein the piston includes a pressure surface and the adjustment member includes a shoulder adapted to engage a portion of the pressure surface; a piston return spring acting on the piston to move the portion of the pressure surface into engagement with the shoulder; and a push rod operatively engaged with the piston such that movement of the piston in the first direction causes a corresponding movement of the push rod to thereby engage and open the engine valve, wherein the piston return spring and the push rod are disposed in the chamber of the piston. 15. The engine valve actuator of claim 14, further including a controller in communication with the control valve and operable to cause movement of the control valve between the first and second positions.16. The engine valve actuator of claim 14, wherein the adjustment member and the housing include corresponding threads that allow the adjustment member to be moved relative to the housing to adjust the distance that the protrusion projects into the opening.17. The engine valve actuator of claim 16, further including a nut engageable with the threads of the adjustment member to secure the adjustment member relative to the housing.18. An engine, comprising:an engine block defining a cylinder; a piston slidably disposed in the cylinder; an engine valve moveable between a first position where a flow of fluid relative to the engine valve is prevented and a second position where a flow of fluid relative to the engine valve is allowed; a housing having a first fluid passageway leading to an opening; an adjustment member disposed in the housing and having a protrusion extending into the opening of the housing; a variable displacement pump fluidly connected to the first fluid passageway; a control valve disposed between the pump and the first fluid passageway, the control valve having a first position where fluid flows relative to the control valve and a second position where fluid is blocked from flowing relative to the control valve; a piston disposed in the opening of the housing and having a bore adapted to receive the protrusion, a chamber, and a second fluid passageway connecting the bore with the chamber, the piston adapted to move in a first direction relative to the housing in response to a flow of fluid through the control valve, the piston moving in the first direction until the protrusion substantially withdraws from the bore, wherein the piston includes a pressure surface and the adjustment member includes a shoulder adapted to engage a portion of the pressure surface; a piston return spring acting on the piston to move the portion of the pressure surface into engagement with the shoulder; and a push rod operatively engaged with the piston such that movement of the piston in the first direction causes a corresponding movement of the push rod to engage and move the engine valve towards the second position, wherein the piston return spring and the push rod are disposed in the chamber of the piston. 19. The engine of claim 18, further including a controller in communication with the control valve and configured to control the movement of the control valve between the first and second positions.20. The engine of claim 18, further including a valve return spring acting to move the engine valve towards the first position.21. The engine of claim 18, wherein the adjustment member and the housing including corresponding threads that allow the adjustment member to be moved relative to the housing to adjust the distance that the protrusion projects into the opening.22. The engine of claim 21, further including a nut engageable with the threads of the adjustment member to secure the adjustment member relative to the housing.

이 특허에 인용된 특허 (36)

이 특허를 인용한 특허 피인용횟수: 3

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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
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특허 상세정보

Engine valve actuator

초록
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청구항
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이 특허에 인용된 특허 (36)

이 특허를 인용한 특허 피인용횟수: 3

IPC 상위 출원인

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상세정보조회

원문조회

IPC 상세정보(version : 201201)

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특허 상세정보

Engine valve actuator

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이 특허에 인용된 특허 (36)

이 특허를 인용한 특허 피인용횟수: 3

IPC 상위 출원인

과제정보

상세정보조회

원문조회

IPC 상세정보(version : 201201)

연구과제 성과물(0)

참여연구원의 다른 문헌(0)

처리중입니다.

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