System and method for multi-lift valve actuation

Details System and method for multi-lift valve actuation System and method for multi-lift valve actuation

2006-06-27

2006-06-27

Dolinar, Andrew M. (Department: 3747)

Internal-combustion engines

Charge forming device

Exhaust gas used with the combustible mixture

C123S090120, C123S322000

Reexamination Certificate

active

07066159

ABSTRACT:
A system and method for actuating one or more engine valves to produce an engine valve event is disclosed. The system may comprise: a housing; an accumulator disposed in the housing having a first open end and a second open end; a master piston slidably disposed in a first bore formed in the housing; a valve train element(s) for imparting motion to the master piston; and a slave piston slidably disposed in a second bore formed in the housing, the slave piston in fluid communication with the master piston through a high pressure hydraulic passage, wherein the first open end and the second open end of the accumulator are in communication with the high pressure hydraulic passage to selectively modify the imparted motion.

REFERENCES:
patent: 4572114 (1986-02-01), Sickler
patent: 4742806 (1988-05-01), Tart et al.
patent: 5460131 (1995-10-01), Usko
patent: 5996550 (1999-12-01), Israel et al.
patent: 6694933 (2004-02-01), Lester
patent: 6883492 (2005-04-01), Vanderpoel et al.

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