Variable valve lift apparatus

Details Variable valve lift apparatus Variable valve lift apparatus

2011-04-05

2011-04-05

Chang, Ching (Department: 3748)

Internal-combustion engines

Poppet valve operating mechanism

Tappet

C123S090440, C123S090520, C123S090550, C074S569000

Reexamination Certificate

active

07918202

ABSTRACT:
A variable valve apparatus includes a high lift cam and a low lift cam in parallel with the high lift cam. A tappet body includes a high lift tappet body that constantly contacts the high lift cam, and a low lift tappet body that is disposed in the high lift tappet body and selectively contacts the low lift cam. An inner column is connected with a valve and reciprocally disposed within the low lift tappet body. A supporting member is disposed below the tappet body. A lost motion elastic member is disposed between the supporting member and the tappet body for supplying restoring force to the tappet body. A first connector selectively connects the high lift tappet body and the low lift tappet body. A second connector selectively connects the low lift tappet body and the inner column.

REFERENCES:
patent: 7484488 (2009-02-01), Cecur et al.
patent: 10-047029 (1998-02-01), None
patent: 2003-027908 (2003-01-01), None

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