The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 15, 1987
Filed:
May. 13, 1986
Applicant:
Inventors:
Tadayoshi Ikai, Aichi, JP;
Takashi Kamo, Aichi, JP;
Assignee:
Toyota Jidosha Kabushiki Kaisha, Toyota, JP;
Primary Examiner:
Int. Cl.
CPC ...
G01M / ;
U.S. Cl.
CPC ...
73116 ; 204425 ;
Abstract
An air/fuel ratio detector constructed of first and second elements positioned such that the gap between the closed end of the second element constructing the limit current type oxygen sensor and the end of a tubular heater is closed or such that the one of electrodes formed on the second element and located on the side contacting the exhaust gas is made of a material having no catalytic capability to purify the exhaust gas. As a result, the second element does not constitute a concentration cell so that the output characteristics obtainable are ideal from the rich to lean range of the air-fuel ratio.