[미국특허]
Rocker arm assembly and components therefor
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
F01L-001/18
F01L-013/00
출원번호
US-0636231
(2017-06-28)
등록번호
US-10180087
(2019-01-15)
발명자
/ 주소
Zurface, Austin Robert
Trudell, Daniel Bennett
Radulescu, Andrei Dan
출원인 / 주소
EATON CORPORATION
대리인 / 주소
GTC Law Group PC & Affiliates
인용정보
피인용 횟수 :
0인용 특허 :
117
초록▼
A switching rocker arm system includes a rocker assembly having a first end and a second end, and engaging a lash adjuster an and engine valve. The system further includes a first arm rotationally coupled to a second arm at the first or second end, and selectively rotationally coupled to the second
A switching rocker arm system includes a rocker assembly having a first end and a second end, and engaging a lash adjuster an and engine valve. The system further includes a first arm rotationally coupled to a second arm at the first or second end, and selectively rotationally coupled to the second arm at the other of the first end and the second end by a latch. In the latched position, a second cam engagement surface of the second arm engages the second cam to operate the engine valve in a high-lift mode, a biasing spring urges the second cam engagement surface into contact with the second cam, and a rotational stop prevents contact of the second cam engagement surface with a base circle portion of the second cam in the low-lift mode.
대표청구항▼
1. A switching rocker arm system for controlling an engine valve and for interacting with a first cam and a second cam, comprising: a rocker assembly having a first end and a second end, and engaging a lash adjuster and the engine valve, the rocker assembly comprising:a first arm rotationally couple
1. A switching rocker arm system for controlling an engine valve and for interacting with a first cam and a second cam, comprising: a rocker assembly having a first end and a second end, and engaging a lash adjuster and the engine valve, the rocker assembly comprising:a first arm rotationally coupled to a second arm at one of the first end and the second end, the first arm selectively rotationally coupled to the second arm at the other of the first end and the second end;a latch having a latched position that rotationally couples the first arm to the second arm at the other of the first end and the second end, and an unlatched position that allows the first arm and the second arm to pivot independently at the other of the first end and the second end;wherein in the unlatched position, a first cam engagement surface of the first arm engages the first cam to operate the engine valve in a low-lift mode;wherein in the latched position, a second cam engagement surface of the second arm engages the second cam to operate the engine valve in a high-lift mode; anda means for urging the second cam engagement surface into contact with the second cam, and a means for preventing contact of the second cam engagement surface with a base circle portion of the second cam in the low-lift mode; andwherein the means for preventing contact of the second cam engagement surface with a base circle portion of the second cam in the low-lift mode further comprises a means for providing wear rates between: the first cam engagement surface and the first cam, the second cam engagement surface and the second cam, and an interface between a latch pad surface and an arm engaging surface for the latch; such that a total mechanical lash of the system does not change over a life of the switching rocker arm system. 2. The switching rocker arm system of claim 1, wherein the rocker assembly engages the lash adjuster at the first end and engages the engine valve at the second end. 3. The switching rocker arm system of claim 1, wherein the means for urging the second cam engagement surface into contact with the second cam further comprises a biasing spring positioned between the first arm and the second arm. 4. The switching rocker arm system of claim 3, wherein the means for urging the second cam engagement surface into contact with the second cam further comprises at least one torsion spring. 5. The switching rocker arm system of claim 1, wherein the means for preventing contact of the second cam engagement surface with the base circle portion of the second cam in the low-lift mode further comprises a rotational stop limiting rotation of the second arm in the direction of the second cam. 6. The switching rocker arm system of claim 1, wherein the means for providing wear rates comprises providing at least one surface parameter selected from the surface parameters consisting of: a smoothness, a surface hardness, a diamond like coating, and a friction value; for each of the surfaces such that the wear rates are configured to allow the rotational stop to prevent the contact of the of the second cam engagement surface with the base circle portion of the second cam in the low-lift mode throughout the life of the switching rocker arm system. 7. The switching rocker arm system of claim 1, wherein a distance between the latch pad surface and the arm engaging surface comprises a latch lash, and wherein the latch lash comprises at least 10 microns. 8. The switching rocker arm system of claim 1, wherein a distance between the latch pad surface and the arm engaging surface comprises a latch lash, and wherein the latch lash comprises at least 5 microns. 9. The switching rocker arm system of claim 1, wherein the life of the switching rocker arm system comprises at least one value selected from the values consisting of: at least 150,000 miles;at least 200,000 miles;at least 330 million valve operation events;at least 5,000 hours of operation; andan engine useful life value. 10. The switching rocker arm system of claim 1, further comprising wherein the latch in the unlatched position is positioned within the first arm, wherein the latch in the latched position engages the second arm and prevents lost motion of the second arm, the system further comprising a means for preventing the latch in the latched position from contacting the second arm when the first cam engagement surface is in contact with the base circle portion of the first cam. 11. The switching rocker arm system of claim 10, further comprising a means for switching the latch between the latched position and the unlatched position only when the first cam engagement surface is in contact with the base circle portion of the first cam.
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Fujiyoshi Yoshihiro (Kanagawa JPX) Aoki Takatoshi (Tokyo JPX) Urata Yasuhiro (Saitama JPX), Method of and apparatus for controlling valve operation in an internal combustion engine.
Yoneda, Hiroshi; Kurita, Masahiro; Kouda, Yasuo, Position measuring device of electromagnetically operated engine valve drive system and method for attaching the same.
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Arns, Jr., Donald C.; Garcia, Pablo, System and method of perpendicularly magnetizing position information in a magnetically hard layer of a moving component.
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Low,Thomas P.; Clark,C. Bruce; Pelrine,Ronald E.; Eckerle,Joseph S.; Smith,Chris, Systems and methods of recording piston rod position information in a magnetic layer on a piston rod.
Low,Thomas P.; Clark,C. Bruce; Pelrine,Ronald E.; Eckerle,Joseph S.; Smith,Chris, Systems for recording position information in a magnetic layer on a piston rod.
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