Fuel control system for internal combustion engines

Details Fuel control system for internal combustion engines Fuel control system for internal combustion engines

1985-10-17

1987-04-14

Kreitman, Stephen A.

Measuring and testing

Gas analysis

By vibration

123494, G01N 2902

Patent

active

046568646

ABSTRACT:
Apparatus for maintaining the correct air/fuel mixture in internal combustion engines. In the preferred embodiment, the density of atmospheric air at concurrent temperature and barometric pressure conditions is sensed by an acoustical transducer whose electric output is electronically correlated with known volumetric flow rate data; thereby obtaining the mass flow rate of engine aspirated air. The acquired air mass flow-rate data, together with other data pertaining to concurrent engine load and condition is utilized to achieve at any throttle position a correct air/fuel ratio. In an alternate embodiment, the mass flow rate of engine aspirated air is obtained by utilizing the basic air density sensing transducer in measuring the suction pressure at the venturi throat within an engine incorporated throttle body device, while simultaneously sensing, and measuring continuously occurring changes in atmospheric conditions.

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patent: 4561404 (1985-12-01), Kanno et al.

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