Internal-combustion engines – Poppet valve operating mechanism – With means for varying timing
Reexamination Certificate
2006-09-05
2006-09-05
Denion, Thomas (Department: 3748)
Internal-combustion engines
Poppet valve operating mechanism
With means for varying timing
C123S090310, C074S569000
Reexamination Certificate
active
07100553
ABSTRACT:
An actuator for a valve lift control device linearly moves a control shaft to change a valve lift in accordance with an axial position of the control shaft. A first and a second rotation cam integrally rotate around a common rotation axis by transmission of torque, so that a direct acting follower, which includes a first and a contact members, linearly moves with a control shaft. The first and a second rotation cams are respectively in contact with the first and the second contact members via a first and a second contact points. The first contact point is located on the opposite side of the second contact point with respect to the rotation axis. A sum of a first rotation cam lift of the first rotation cam and a second rotation cam lift of the second rotation cam is substantially constant in a predetermined rotation angular range of the first rotation cam and the second rotation cam.
REFERENCES:
patent: 6425357 (2002-07-01), Shimizu et al.
patent: 7004127 (2006-02-01), Shibata et al.
patent: 2004/0083997 (2004-05-01), Shibata et al.
Inaba Hideo
Kameshima Akihiko
Suzuki Yasuyoshi
Yamaguchi Jouji
Chang Ching
Denion Thomas
Denso Corporation
Nixon & Vanderhye P.C.
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