Vortex shedding device

Details Vortex shedding device Vortex shedding device

1981-11-18

1984-07-17

Goldberg, Gerald

Measuring and testing

Simulating operating condition

Marine

7386122, G01F 132

Patent

active

044598475

ABSTRACT:
A vortex shedding device for use in measuring air flow rate into an internal combustion engine includes a duct provided therein with an element for forming vortices in air flowing through the duct. A pair of hot wires is located in the duct which are alternately exposed to vortices generated by the vortex forming element. The hot wires are associated with an electric circuit which detects variations in the resistances of the hot wires and determines the frequency at which vortices are generated in air flowing past the vortex forming element. The electric circuit contains a vortex detector for each of the hot wires so that even if one of the hot wires is broken, a pulse signal is still provided during steady operation of the engine.

REFERENCES:
patent: 3996796 (1976-12-01), Adler et al.
patent: 4334426 (1982-06-01), Kita et al.

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