Switchable dual lifter

Details Switchable dual lifter Switchable dual lifter

2011-04-12

2011-04-12

Eshete, Zelalem (Department: 3748)

Internal-combustion engines

Poppet valve operating mechanism

Tappet

C123S090480, C123S090160

Reexamination Certificate

active

07921822

ABSTRACT:
The switchable dual lifter has two hydraulic lash adjusters, one which is fixed within the common housing, and the other which is movable to allow for deactivation of one of the two valves acted on by the dual lifter. Using the dual lifter with a switchable hydraulic lash adjuster allows for closing of one of the adjacent valves while allowing the other of the adjacent valves to operate.

REFERENCES:
patent: 6606972 (2003-08-01), Wenisch et al.
patent: 7284519 (2007-10-01), Best et al.
patent: 7637237 (2009-12-01), Evans et al.

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