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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.:

US 10316779 B1

PDFFull Text
Expired
Date of Patent:
Jun. 11, 2019

Filed:

Sep. 30, 2014

Abnormality diagnosis system of air-fuel ratio sensor

Applicant:

Toyota Jidosha Kabushiki Kaisha, Toyota-shi, Aichi, JP;

Inventors:

Hiroshi Miyamoto, Shizuoka, JP;

Toru Kidokoro, Hadano, JP;

Yasushi Iwazaki, Ebina, JP;

Kenji Suzuki, Susono, JP;

Assignee:

TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota-shi, JP;

Attorney:

Hunton Andrews Kurth LLP

Primary Examiner:

Phutthiwat Wongwian

Assistant Examiner:

Diem Tran

Int. Cl.
CPC ...
F01N 3/00 (2006.01); F02D 41/14 (2006.01); F02D 41/22 (2006.01); F01N 3/20 (2006.01);
U.S. Cl.
CPC ...
F02D 41/1475 (2013.01); F01N 3/2066 (2013.01); F02D 41/1441 (2013.01); F02D 41/1454 (2013.01); F02D 41/1495 (2013.01); F02D 41/222 (2013.01); Y02T 10/40 (2013.01);
Abstract

An abnormality diagnosis system of an air-fuel ratio sensor is provided with an exhaust purification catalyst, an upstream side air-fuel ratio sensor which is provided at an upstream side of the exhaust purification catalyst, a downstream side air-fuel ratio sensor which is provided at a downstream side of the exhaust purification catalyst, and a diagnosis device which uses the outputs of these air-fuel ratio sensors as the basis to diagnose abnormality of the downstream side air-fuel ratio sensor.

Find Patent Forward Citations

Miyamoto, Hiroshi. (2019). Abnormality diagnosis system of air-fuel ratio sensor (U.S. Patent No. 10316779). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/10316779

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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