Air intake measuring device for internal combustion engine

Details Air intake measuring device for internal combustion engine Air intake measuring device for internal combustion engine

1981-02-02

1983-01-25

Goldstein, Herbert

Measuring and testing

Volume or rate of flow

Thermal type

73118, G01F 168

Patent

active

043696562

ABSTRACT:
An air flow rate sensor including a resistor the characteristic of which depends on temperature for operation mounted in a suction conduit of an internal combustion engine. The air flow rate sensor includes a tube of inorganic material, a platinum wire wound in convolutions on the surface of the tube, and a glass coating applied at least to the surface of the resistor while allowing a part of the surface to be exposed. The glass coating has a thickness smaller than the diameter of the resistor wire and enables equalization of pulsations of the sensor output to be obtained because of the thermal capacity of the glass coating.

REFERENCES:
patent: 2852647 (1958-09-01), Charmichael
patent: 3677085 (1972-07-01), Hayakawa
patent: 4011756 (1977-03-01), Lemos
patent: 4025891 (1977-05-01), Fletcher et al.

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