Air flow rate meter and air flow rate detection

Details Air flow rate meter and air flow rate detection Air flow rate meter and air flow rate detection

1993-09-20

1995-06-13

Chilcot, Jr., Richard E.

Measuring and testing

Volume or rate of flow

Thermal type

G01F 168

Patent

active

054232104

ABSTRACT:
An air flow rate meter and air flow rate detection method in which the air flow rate detector has both a heat generating temperature sensing resistor and a secondary heating resistor to generate heat in an air passage. A separate current source provides heating current to the secondary heating resistor in order to maintain the operating temperature of the air flow detector in the proper range, which is higher than the ambient air temperature

REFERENCES:
patent: 4587842 (1986-05-01), Handtmann
patent: 4682496 (1987-07-01), Miura et al.
patent: 4870935 (1989-10-01), Araki
patent: 4991560 (1991-02-01), Asai et al.
"Hot Film Air Mass Meter--A Low-Cost Approach to Intake Air Measurement", R. Sauer, Robert Bosch GmbH, pp. 105-108.

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