Tapered toroidal flow control valve and fuel metering device

Details Tapered toroidal flow control valve and fuel metering device Tapered toroidal flow control valve and fuel metering device

2007-10-23

2007-10-23

Huynh, Hai (Department: 3747)

Internal-combustion engines

Charge forming device

Gaseous fuel and air mixer

Reexamination Certificate

active

11521704

ABSTRACT:
A fuel metering device utilizing a tapered toroid shaped flow control valve placed between a pressure chamber and a discharge space, with a seal, fixedly mounted to the valve, fluidically isolating the pressure chamber from the discharge space when the valve is in its closed position, and a rotary actuator capable to move the toroidal valve about a fixed fulcrum to deliver a precisely metered amount of a preferably gaseous fuel to an internal combustion engine. The device further comprises a biasing spring, to close the valve when the rotary actuator is de-energized, and a rotary position sensor, which, in co-operation with the rotary actuator enable accurate angular positioning of the valve.

REFERENCES:
patent: 6131552 (2000-10-01), Paielli et al.
patent: 6178952 (2001-01-01), Lammerts et al.
patent: 6748932 (2004-06-01), Sorter et al.
patent: 6955160 (2005-10-01), Konopacki et al.

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