Manually operated metering valve

Details Manually operated metering valve Manually operated metering valve

F - Mech Eng,Light,Heat,Weapons

02

D

60/176

F02D 33/00 (2006.01) F02C 9/28 (2006.01) F02C 9/46 (2006.01)

Patent

CA 1188901

ABSTRACT OF THE DISCLOSURE A fuel control having an electrically operated metering valve and a manually operated metering valve through which fuel is independently scheduled to an engine. During normal operation, the electrically operated metering valve controls the flow of fuel to the engine in response to an operator input signal. Linkage connected to a power lever supplies the manually operated metering valve with an input corresponding to the fuel flow requirement requested by the operator of the electrically operated metering valve. The manually operated metering valve is connected to the source of fuel through an electrically operated transfer valve. Should an electrical failure occur, the electrically operated transfer valve is deactivated and if the fuel flow requirement is below a fixed level, fuel flows from the source through the manually operated metering valve without moving the power lever to maintain a substantially constant engine speed.

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