Automotive air flow rate metering system

Details Automotive air flow rate metering system Automotive air flow rate metering system

1982-08-10

1984-10-23

Ruehl, Charles A.

Measuring and testing

Simulating operating condition

Marine

7386122, G01F 132

Patent

active

044780745

ABSTRACT:
An air flow rate measuring device for use with an internal combustion engine in which a signal accurately representing the air flow rate of intake air in an intake air passage of the engine is always available. A first, frequency signal is generated which has a frequency which varies in proportion to frequency of vortices in a vortex stream in the intake air passage. An analog signal is provided which has an amplitude which varies in accordance with an average of the air flow rate in the intake air passage. By using these signals together, an accurate indication of the air flow rate in the intake air passage is continuously provided.

REFERENCES:
patent: 3996796 (1976-12-01), Adler et al.
patent: 4254659 (1981-03-01), Benedetto et al.
patent: 4320650 (1982-03-01), Kita

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