Method and apparatus for obtaining a control variable for the cl

Details Method and apparatus for obtaining a control variable for the cl Method and apparatus for obtaining a control variable for the cl

1980-11-17

1982-10-26

Lall, P. S.

Internal-combustion engines

Charge forming device

Fuel injection system

123440, 204195S, F02B 300

Patent

active

043556183

ABSTRACT:
A method and apparatus is proposed for obtaining a control variable for the closed-loop control of the fuel-air ratio of the operating mixture of internal combustion engines, in which a threshold-current sensor of known structure is used. By means of varying the measurement voltage present at the threshold-current sensor by voltage amounts which correspond to a change in oxygen concentration to be expected in association with a change in operational state, the time behavior of the threshold-current sensor, which is essentially sluggish, is compensated for and it becomes possible to use it for rapidly-functioning closed-loop control systems in internal combustion engines.

REFERENCES:
patent: 3860498 (1975-01-01), Jones
patent: 4005689 (1977-02-01), Barnard
patent: 4061117 (1977-12-01), Ikeura
patent: 4088095 (1978-05-01), Aono
patent: 4178883 (1979-12-01), Herth
patent: 4237829 (1980-12-01), Asano et al.
patent: 4237839 (1980-12-01), Ueno et al.

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