Valve-actuating variable cam for engine

Details Valve-actuating variable cam for engine Valve-actuating variable cam for engine

1997-09-24

1999-01-05

Lo, Weilun

Internal-combustion engines

Poppet valve operating mechanism

With means for varying timing

123 906, 74568R, F01L 1300

Patent

active

058551905

ABSTRACT:
A valve-actuating variable cam for a reciprocating machine is disclosed. The cam comprises a camshaft journalled for rotation by said machine and driven in timed relationship with said machine, a first cam fixed upon said camshaft and rotatable with the camshaft, and a second cam fixed for rotation with the camshaft and moveable relative to the first said cam in a direction radial to the axis of rotation of the camshaft. A shift rod is slidably mounted within the cam shaft, the shift rod having a drive surface thereon driving a key element. The key element is at least partially positioned within and engages at least the second cam. The shift rod is moveable between a first position in which the first cam engages a valve or similar element, and second position in which the key pushes the second cam radially outwardly and the valve engages the second cam.

REFERENCES:
patent: 4886022 (1989-12-01), Nakai
patent: 5184581 (1993-02-01), Aoyama et al.
patent: 5402759 (1995-04-01), Ding et al.
patent: 5404770 (1995-04-01), Kruger
patent: 5505168 (1996-04-01), Nagai et al.

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