Valve controlled stroke piston combustion engine with a cam shaf

Details Valve controlled stroke piston combustion engine with a cam shaf Valve controlled stroke piston combustion engine with a cam shaf

1981-12-08

1983-09-20

Lazarus, Ira S.

Internal-combustion engines

Accessories

Covers, trays, vibrators, corrosion inhibitors, air filters

123 9016, 123 9017, F02D 1306

Patent

active

044049374

ABSTRACT:
A valve controlled stroke piston combustion engine is provided with a cam shaft which supports a number of cams equal in number to the inlet and outlet valves. The individual cylinders are switched off by closing the associated inlet and outlet valves. The cams are associated with the valves and are rotatably mounted and axially non-displaceable on the cam shaft. Dogs are fixedly mounted on said cam shaft and cooperate with said cams. Each cam is provided with a front face having a concentric annular section groove with a continuously increasing depth with respect to the rotating axis of the cam shaft. The annular section groove ends have a radial abutment face; and each dog is provided with an axial protrusion on a front face facing the corresponding cam with the protrusion engaging on the abutment face during a switched on valve.
Pretensionable springs are provided for the engagement and disengagement of dogs.

REFERENCES:
patent: 1331787 (1920-02-01), Schlatter
patent: 1350989 (1920-08-01), Cox
patent: 2888837 (1959-06-01), Hellmann
patent: 4249489 (1981-02-01), Bruder et al.
patent: 4252093 (1981-02-01), Hazelrigg
patent: 4284042 (1981-08-01), Springer
patent: 4336775 (1982-06-01), Meyer

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