Variable valve lift apparatus

Details Variable valve lift apparatus Variable valve lift apparatus

2011-08-02

2011-08-02

Denion, Thomas E (Department: 3748)

Internal-combustion engines

Poppet valve operating mechanism

With means for varying timing

C123S090480

Reexamination Certificate

active

07987826

ABSTRACT:
A variable valve lift apparatus according to an exemplary embodiment of the present invention includes a low lift cam, a high lift cam in parallel with the low lift cam, a low lift tappet body that selectively contacts the low lift cam, a high lift tappet body disposed within the low lift tappet body and constantly contacting the high lift cam, a guide portion that is connected with a valve and selectively connects the low lift tappet body and the high lift tappet body, and a lost motion spring that is disposed between the guide portion and the low lift tappet body and supplies restoring force to the low lift tappet body.

REFERENCES:
patent: 5343833 (1994-09-01), Shirai
patent: 5743226 (1998-04-01), Tohdoh et al.
patent: 6213076 (2001-04-01), Fischer et al.
patent: 6273041 (2001-08-01), Haas et al.
patent: 6397804 (2002-06-01), Harada et al.
patent: 2009/0056659 (2009-03-01), Nagado et al.
patent: 2002-106313 (2002-04-01), None
patent: 2002106313 (2002-04-01), None

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