Air flow rate measuring device for an internal combustion engine

Details Air flow rate measuring device for an internal combustion engine Air flow rate measuring device for an internal combustion engine

1991-02-01

1993-02-16

Myracle, Jerry W.

Measuring and testing

Simulating operating condition

Marine

7320422, G01F 168

Patent

active

051860449

ABSTRACT:
An air flow rate measuring device for an internal combustion engine has a housing adapted to be inserted through a wall, the housing defining an air intake main passage of the engine. The housing also has an auxiliary air passage for a portion of the intake air and the housing supports a circuit board containing a hot wire and a temperature sensitive resistor, the hot wire being adapted to measure the air flow rate in the auxiliary passage. In a feature of the invention the housing has a metallic wall which is exposed to air flow in the main passage so that improved temperature reliability of the device may be achieved.

REFERENCES:
patent: 4785662 (1988-11-01), Ohta et al.
patent: 4887577 (1989-12-01), Arai et al.

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