System and method for modifying engine valve lift

Details System and method for modifying engine valve lift System and method for modifying engine valve lift

2005-07-26

2005-07-26

Gimie, Mahmoud (Department: 3747)

Internal-combustion engines

Charge forming device

Exhaust gas used with the combustible mixture

C123S090120

Reexamination Certificate

active

06920868

ABSTRACT:
Devices for modifying engine valve lift during an engine valve event are disclosed. In one embodiment, the device comprises: a housing having a hydraulic fluid dump port formed therein; a sleeve slidably disposed in a bore formed in the housing, the sleeve having a cavity formed therein; a piston slidably disposed in the sleeve cavity; and a clip passage formed in the piston, the clip passage in selective communication with the dump port.

REFERENCES:
patent: 6189504 (2001-02-01), Israel et al.
patent: 6474277 (2002-11-01), Vanderpoel et al.

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