Internal-combustion engines – Valve – Rotary
Patent
1996-07-22
1998-01-27
Solis, Erick R.
Internal-combustion engines
Valve
Rotary
123 81B, 1231901, F01L 710
Patent
active
057112657
ABSTRACT:
An improved drive mechanism for rotary valves of the type used in internal combustion engines indexes the valves in selected attitudes of rotation to align the valve passage with an inlet or exhaust port and hold the valve in alignment for a selectable duration of crankshaft rotation. In like fashion, the valves are also indexed to close off an inlet or exhaust port for a selected duration of crankshaft rotation. Flow into and out of an engine cylinder is improved because each valve is held for a longer period of time in a full open position. while compression and power strokes are made more efficient by the gas seal maintained while the valves are positioned to close off the intake and exhaust ports.
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Coates Engines Machine Design: Rotary Valve Speeds Closer to Reality, Jul. 23, 1992, pp. 34-35.
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