Internal-combustion engines – Poppet valve operating mechanism – With means for varying timing
Patent
1983-12-27
1985-09-17
Lazarus, Ira S.
Internal-combustion engines
Poppet valve operating mechanism
With means for varying timing
123308, 123315, 123432, F01L 134
Patent
active
045413720
ABSTRACT:
An internal combustion engine comprising four valves for each cylinder consisting of a first pair of continuously operable intake and exhaust valves and a second pair of additional, optionally disconnectible intake and exhaust valves, the valve lift curve of the first pair being intended for torque in the partial load range and the second pair for power in the full load range, the engine including two overhead camshafts for actuating the four valves per cylinder, with the valves arranged so that in each case the disconnectible valves of two adjacent cylinders are adjacent to one another and may be actuated by cams on a sleeveshaft which is freely rotatable on the camshaft but may be coupled rotationally rigidly at the correct angle to the camshaft by way of an axially slidable shift collar.
REFERENCES:
patent: 4353334 (1982-10-01), Neitz
patent: 4404937 (1983-09-01), Leitermann
patent: 4429853 (1984-02-01), Chaffiote et al.
patent: 4442806 (1984-04-01), Matsuura et al.
patent: 4448156 (1984-05-01), Henault
patent: 4480617 (1984-11-01), Nakano et al.
Ford Motor Company
Lazarus Ira S.
McCollum Robert E.
Sadler Clifford L.
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