Adjustable valve control system with twin cams and cam lift...

Details Adjustable valve control system with twin cams and cam lift... Adjustable valve control system with twin cams and cam lift...

2005-09-13

2005-09-13

Denion, Thomas (Department: 3748)

Internal-combustion engines

Poppet valve operating mechanism

With means for varying timing

C123S090150, C123S090310, C123S090170

Reexamination Certificate

active

06941910

ABSTRACT:
A control system is disclosed for operating an engine valve. The system comprises two cams arranged on a common camshaft but rotatable relative to one another. A summation lever has cam followers in contact respective cams. The summation lever is movable in proportion to the instantaneous sum of the lifts of the respective cams. Rockers are provided for opening the engine valve in dependence upon the movement of the summation lever. By varying the phase of the cams relative to one another, it is possible to vary the valve timing, valve lift and/or valve event duration.

REFERENCES:
patent: 5931124 (1999-08-01), Kerkau et al.
patent: 6314926 (2001-11-01), Meneely et al.
patent: 6321704 (2001-11-01), Church et al.
patent: 2180597 (1987-04-01), None
patent: 2206647 (1989-01-01), None

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