Measuring and testing – Gas analysis – Gas of combustion
Patent
1992-10-23
1994-01-18
Wieder, Kenneth A.
Measuring and testing
Gas analysis
Gas of combustion
73 2331, 324610, 324611, 324706, 324720, G01N 2758, G01N 2712
Patent
active
052791459
ABSTRACT:
A heater control device for an air-fuel ratio sensor which comprises: an air-fuel ratio sensor comprising a sensor element which detects an air-fuel ratio state of exhaust gas of an engine, and a heater which heats the sensor elements; a heater current flow control means for controlling a value of a resistance of the heater to be a target resistance value; a harness having a couple of couplers at both ends thereof which connects between the air-fuel ratio sensor and the heater current flow control means; and a current detecting resistance which is incorporated in the coupler on the air-fuel ratio sensor side, or provided adjacent to said coupler on the air-fuel ratio sensor side, and which is connected to the heater in series and detects current of the heater.
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Mitsubishi Denki K.K.
Solis Jose M.
Wieder Kenneth A.
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