Internal-combustion engines – Poppet valve operating mechanism – With means for varying timing
Reexamination Certificate
2011-04-12
2011-04-12
Eshete, Zelalem (Department: 3748)
Internal-combustion engines
Poppet valve operating mechanism
With means for varying timing
C123S090520, C123S090390
Reexamination Certificate
active
07921819
ABSTRACT:
An actuating system for a gas exchange valve of an internal combustion engine is described which comprises two cams (12,14) associated with the valve (10), a summation linkage (22,24,30,32) for lifting the valve in dependence upon the sum of the instantaneous lifts of the two cams (12,14). A de-activating mechanism34is provided for selectively decoupling the summation linkage from one (12) of the two cams.
REFERENCES:
patent: 7134411 (2006-11-01), Lancefield et al.
patent: 2004/0244751 (2004-12-01), Falkowski et al.
patent: 2006/0112914 (2006-06-01), Lancefield et al.
patent: 1148213 (2001-10-01), None
patent: 2421765 (2006-05-01), None
Lancefield Timothy Mark
Methley Ian
Chernoff Vilhauer & McClung & Stenzel
Eshete Zelalem
Mechadyne PLC
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