G - Physics – 01 – N
Patent
G - Physics
01
N
324/25, 341/38.1
G01N 27/406 (2006.01)
Patent
CA 1159930
ABSTRACT OF THE DISCLOSURE: A device useful for detection of air/fuel ratio of an air-fuel mixture subjected to combustion in a combustor by sensing oxygen in the exhaust gas, using a solid electrolyte concentration cell type oxygen-sensitive element which requires supply of a DC current to flow through its solid electrolyte layer between reference and measurement electrode layers to establish a reference oxygen partial pressure at the interface between the reference electrode and the solid electrolyte. The device comprises a control circuit to vary the intensity of the current for the oxygen-sensitive element in dependence on the magnitude of an output voltage of the oxygen-sensitive element when predetermined one of said output voltage and a reference voltage is higher than the other in order to compensate variations of the magnitude of the reference oxygen partial pressure caused mainly by variations of the temperature. .
372041
Ishitani Shigeo
Kanegae Hidetoshi
Uchida Masaaki
Nissan Motor Co. Ltd.
Robic Robic & Associes/associates
LandOfFree
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