Measurement of air mass flow into an internal combustion engine

Details Measurement of air mass flow into an internal combustion engine Measurement of air mass flow into an internal combustion engine

1982-03-15

1983-09-27

Myracle, Jerry W.

Measuring and testing

Simulating operating condition

Marine

7386152, G01M 1500

Patent

active

044061617

ABSTRACT:
An air mass flow measuring system for measuring flow into an internal combustion engine comprises a throttle angle transducer and further transducers measuring ambient air temperature and pressure as well as the pressure drop across the throttle valve. The signals from these transducers are supplied to calculating circuit which carries out the calculation M=K.sqroot.P.multidot..DELTA.P/T. The values of the coefficient K used in this calculation are derived from an empirically programmed read only memory incorporated in the calculating circuit, such memory storing empirically determined values of K for each combination of a plurality of values of throttle angle and a plurality of values of .sqroot. P.multidot..DELTA.P/T.

REFERENCES:
patent: 4181944 (1980-01-01), Yamauchi et al.
patent: 4311042 (1982-01-01), Hosoga et al.

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