Measuring and testing – Gas analysis – Gas of combustion
Patent
1997-01-06
1999-03-30
Brock, Michael
Measuring and testing
Gas analysis
Gas of combustion
73 3106, 204429, G01N 27407
Patent
active
058891960
ABSTRACT:
A gas composition sensor for detecting oxygen, and hydrocarbon group fuel or combustible composition produced after combustion having a zirconia solid electrolyte body, a concentration cell composed of a platinoid metal catalytic detecting electrode and a reference electrode opposite to each other and a sensing element composed of a gas diffusion limiting member coating the detecting electrode, which further comprises a pair of the sensing elements and heaters for setting both of the sensing elements to operating temperatures different from each other, whereby a specified gas component is selectively detected by operating both of the sensing elements so as to have sensitivity coefficients to the specified gas component different from each other.
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Minami Naoki
Ouchi Shirou
Ueno Sadayasu
Brock Michael
Hitachi , Ltd.
Hitachi Car Engineering Co. Ltd.
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