Air flow metering apparatus for internal combustion engines

Details Air flow metering apparatus for internal combustion engines Air flow metering apparatus for internal combustion engines

1989-06-13

1990-10-30

Myracle, Jerry W.

Measuring and testing

Simulating operating condition

Marine

7320414, G01M 1500

Patent

active

049660330

ABSTRACT:
Disclosed is an air flow metering apparatus for an internal combustion engine of the type in which heating current supply to a hot-wire air flow meter for detection of engine suction air flow rate is made intermittent in synchronism with the rotation of the engine so as to directly generate a flow rate detection signal in the form of a pulse width signal. The apparatus comprises a computing circuit for generating a correction data by using variables including the rotation period of the engine and the opening rate of a suction air flow control elements, whereby an air flow data obtained from the pulse width signal is corrected on the basis of the correction data.

REFERENCES:
patent: 4297881 (1981-11-01), Sasayama et al.

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