Variable duration rotary valve

Details Variable duration rotary valve Variable duration rotary valve

1994-03-28

1995-02-28

Wolfe, Willis R.

Internal-combustion engines

Valve

Rotary

1231901, 1231904, F01L 702

Patent

active

053927435

ABSTRACT:
A rotary valve which may be axially adjusted for varying an open duration of the valve. The device includes a rotary valve having a substantially wedge shaped, contoured aperture which allows passage of a combustion mixture through an intake port and into the combustion chamber of an engine during rotation of the valve. The rotary valve is slidably positioned upon a splined shaft which both rotates and permits axial movement of the valve, with such axial motion aligning various portions of the contoured aperture with the intake port to effect a controlled variance of the duration of time the valve permits flow through the port.

REFERENCES:
patent: 1863875 (1932-06-01), Rabezzana
patent: 4163438 (1979-08-01), Guenther
patent: 5309876 (1994-05-01), Schiattino

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