Variable timing rotary valve for an internal combustion engine

Details Variable timing rotary valve for an internal combustion engine Variable timing rotary valve for an internal combustion engine

1980-09-10

1983-12-20

Feinberg, Craig R.

Internal-combustion engines

Valve

Rotary

123 80BA, F01L 718

Patent

active

044210779

ABSTRACT:
A rotary valve with means for effecting variable timing of intake valve opening, variable opening duration and variable timing of closing in response to changes in each engine cylinder's appetite for an intake charge is disclosed. Earliest valve opening, longest duration and latest closing occur when each cylinder's appetite for an intake charge is largest, while latest opening, shortest duration and earliest closing occur when each cylinder's appetite for an intake charge is smallest.
Intake valve timing can be varied sufficiently to permit use of the theoretical Top Dead Center Opening and Bottom Dead Center Closing for idle, low speed and coasting operating modes to the typical average 20 degrees Before Top Dead Center Opening 50 degrees After Bottom Dead Center Closing for high speed-high load operating mode.

REFERENCES:
patent: 1578581 (1926-03-01), Casna
patent: 3948227 (1976-04-01), Guenther
patent: 3993036 (1976-11-01), Tischler
patent: 4201174 (1980-05-01), Vallejos

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