Air flow rate meter

Details Air flow rate meter Air flow rate meter

1984-05-10

1985-12-31

Goldstein, Herbert

Measuring and testing

Volume or rate of flow

Proportional

73118, G01F 500

Patent

active

045613028

ABSTRACT:
An air flow rate meter for ascertaining the mass of the air flowing through an intake tube of an internal combustion engine. The air flow rate meter includes a temperature-dependent measuring resistor, which as a resistance wire is stretched out in an aperture of a carrier body and is disposed, as is a reference resistor, as an element in a common electrical bridge circuit. The carrier body protrudes into a flow cross section through which the air flows, and the reference resistor is wound, in the form of a reference resistor wire, on a partial segment spaced apart from the aperture. A compensating resistor is disposed in the aperture upstream of the measuring resistor and spaced apart as far as possible from the reference resistor.

REFERENCES:
patent: 2926299 (1960-02-01), Rogoff
patent: 3246515 (1966-04-01), Martino et al.
patent: 3354717 (1967-11-01), Minnick
patent: 4264961 (1981-04-01), Nishimura et al.
patent: 4304128 (1981-12-01), Hafner et al.

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