Rotary valve with seal for internal combustion engine

Details Rotary valve with seal for internal combustion engine Rotary valve with seal for internal combustion engine

1993-06-01

1994-07-19

Cross, E. Rollins

Internal-combustion engines

Valve

Rotary

12319014, F01L 708, F01L 716

Patent

active

053298977

ABSTRACT:
A rotary valve for an internal combustion engine comprising: a tapered valve body with a passage for flow of gas starting at one end of the taper and terminating in two places 180 degrees apart on the face of the taper; a pair of rigid seals, 180 degrees apart, which are carried by the valve body and alternately seal the opening to the combustion chamber; pressure cavities behind the pads, sealed by a flexible seal, which use the pressure of the compression stroke to bias the pad which is over the opening to the combustion chamber into contact with the area around this opening, forming a gas tight seal; and a drive shaft for rotating the valve body. A clutch is actuated intermittently by an external microcontroller to engage the drive shaft of the valve with a spinning pulley. During the moving portion of the valve cycle the intake or exhaust gases pass through the flow passage. During the stationary period of the valve cycle the compression and combustion strokes of the engine occur.

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patent: 5154147 (1992-10-01), Moroki

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