Air flow rate meter for an internal combustion engine

Details Air flow rate meter for an internal combustion engine Air flow rate meter for an internal combustion engine

1982-02-11

1984-10-02

Goldstein, Herbert

Measuring and testing

Simulating operating condition

Marine

73204, G01F 168

Patent

active

044740581

ABSTRACT:
An air flow rate meter in an internal combustion engine which functions on the principle of a constant-temperature anemometer is proposed. The device includes a resistance measurement bridge with a regulatable total bridge current, and the relative orientation between the bridge diagonal voltage and the input voltage of a subsequent amplifier is variable. By means of this variation, an adjustment can be made of the set-point and actual curves of the air flow rate meter. In accordance with a first exemplary embodiment, a supplementary current is supplied to one of the connecting lines of the bridge diagonal and the amplifier; in accordance with a second exemplary embodiment, a voltage divider is located between the bridge diagonal points, and one of the voltage divider resistors is connected parallel to an amplifier having a specific offset voltage.

REFERENCES:
patent: 3363462 (1968-01-01), Sabin
patent: 4304128 (1981-12-01), Hafner
patent: 4373387 (1983-02-01), Nishimura et al.

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