Woodward Governor Company

Gary F McDaniel

Barry T Brinks

Justin Fulton

Doyle Kent Stewart

Delbert Dwight Cannon

Larry O Gray

Dana Nova Joyce Wolverton

Bryant K McLaughlin

A fluid metering valve includes a gear rack which is slidable on a valve stem in which a spring counteracts the force of an actuator to maintain a constant load on the gear mechanism to prevent backlash. Corresponding stop mechanisms between the gear and the shaft of a rotary actuator come into engagement with each other near a fully closed position of the fluid metering valve for zero calibration purposes upon power loss to the actuator. A single valve member and a single actuator of the fluid metering valve provides for both a shut-off function and a metering function.

Fluid metering valve

A control valve module for gaseous fuels on spark ignited reciprocating engines is presented. The control valve module has a valve that controls gaseous fuel flow to a mixer or other device for air/fuel ratio control, an actuator for moving the valve position, and a controller. The controller receives a signal from a heated exhaust gas oxygen (HEGO) sensor that is an indication of the fuel/air ratio and actuates the valve to control the combustion mixture to a precise stoichiometric ratio.

Apparatus for air/fuel ratio control

Growing community of inventors

Fort Collins, CO, United States of America

Gary F McDaniel