Method and system for controlling the temperature of a heat meas

Details Method and system for controlling the temperature of a heat meas Method and system for controlling the temperature of a heat meas

1980-07-03

1981-09-29

Kreitman, Stephen A.

Measuring and testing

Gas analysis

Gas chromatography

60276, G01N 2712

Patent

active

042915724

ABSTRACT:
A method and system for controlling the temperature of a heat measuring sensor such as an oxygen sensor located in the exhaust line of an internal combustion engine so that the oxygen sensor will operate within optimal operating temperature. To accomplish this, a heating system including a control mechanism is provided for the oxygen sensor which adjusts the temperature of the oxygen sensor by controlling the output of a heater during the operation of the internal combustion engine according to characteristic engine operating conditions which have an effect on the temperature of the oxygen sensor, the most significant of which is engine load status. These conditions are sensed as a quantity by probes located so as to measure such operating conditions and send a signal to the control mechanism and its sensor heater.

REFERENCES:
patent: 3973529 (1976-08-01), Wessel et al.
patent: 4031866 (1977-06-01), Asano
patent: 4033170 (1977-07-01), Kawamura et al.
patent: 4106451 (1978-08-01), Hattori et al.
patent: 4129105 (1978-12-01), Ito et al.
patent: 4136645 (1979-01-01), Ito et al.

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