Internal-combustion engines – Four-cycle – Rotating valve
Patent
1979-04-12
1981-07-21
Feinberg, Craig R.
Internal-combustion engines
Four-cycle
Rotating valve
123190BA, F01L 700
Patent
active
042792258
ABSTRACT:
The rotary valve engine of the present invention comprises an engine block containing four power cylinders and a central valve cylinder. A single valve port is located in each cylinder just above the maximum travel of the piston. This port serves alternately as an intake port and as an exhaust port. A valve spool is rotatably mounted in the valve cylinder and includes a fuel-air channel in communication with a source of fuel-air mixture and an exhaust port in communication with the atmosphere. The valve spool is rotatable to cause the fuel-air channel and the exhaust channel to move into sequential communication with the valve port of each power cylinder so as to provide charging and exhausting of the power cylinders in proper succession. Two crank shafts are provided, and are linked together by external gears to cause synchronous counter-rotation in such a manner that intake compression, power and exhaust strokes are coordinated and the inertial forces of the engine are counter balanced at all times.
The rotary control valve core is mechanically linked to the crankshafts to provide one revolution of the valve for each two revolutions of the crankshaft. There are three forms of ignition. One is a conventional ignition of a conventional fuel-air mixture using spark plugs or glow plugs. The second uses a flame jet from a secondary rotating valve head linked to the main rotary valve, injecting in high pressure small jet of burning air-fuel "rich" mixture into the compressed "lean" air-fuel mixture already inside the cylinder. The third achieves a stratified charge effect in a novel manner by injecting a small secondary charge of fuel into the previously compressed air-fuel mixture, creating a small local zone of rich mixture in the immediate vicinity of the spark plug or glow plug at the precise moment of ignition.
REFERENCES:
patent: 1096544 (1914-05-01), Krayer
patent: 1571465 (1926-02-01), Bair
patent: 2019043 (1935-10-01), Braunwalder
patent: 3603299 (1971-09-01), Lamperti
patent: 3945359 (1976-03-01), Asaga
patent: 4134381 (1979-01-01), Little
Feinberg Craig R.
Wolfe W.
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