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US Patent 7801666 Air-fuel ratio detection apparatus of internal combustion engine

Patent 7801666 was granted and assigned to Denso on September, 2010 by the United States Patent and Trademark Office.

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US Patent 11881093 Systems and methods for identifying smoking in vehicles
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Patent abstract

In a multi-cylinder engine, to compute the air-fuel ratio of each cylinder by an air-fuel ratio sensor disposed in an exhaust pipe, a cylinder is determined by a crank angle detected by a crank angle sensor. A deviation in the air-fuel ratio of each cylinder is detected on the basis of the output signal of the air-fuel ratio sensor disposed in the exhaust pipe and the forcibly changed quantity of the air-fuel ratio.

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US Patent 11760170 Olfaction sensor preservation systems and methods
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Patent Inventor Names
Eijirou Yamada0
Tetsuji Mitsuda0
Yasuo Hirata0
Yasuo Sagisaka0
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US Patent 07801666 Air-fuel ratio detection apparatus of internal combustion engine US Patent 7801666 Air-fuel ratio detection apparatus of internal combustion engine

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Patent Number
078016660
Patent Number
78016660
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Official Website
https://pdfpiw.uspto.gov/.piw?Docid=078016660
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Infobox
Is a
Patent
Patent
0
Current Assignee
Denso
Denso
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Patent Jurisdiction
United States Patent and Trademark Office
United States Patent and Trademark Office
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Patent Number
078016660
Date of Patent
September 21, 2010
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Patent Application Number
121530640
Date Filed
May 13, 2008
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Official Website
https://pdfpiw.uspto.gov/.piw?Docid=078016660
Patent Primary Examiner
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Mahmoud Gimie
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Website URL
https://pdfpiw.uspto.gov/.piw?Docid=07801666
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 US Patent 07801666 Air-fuel ratio detection apparatus of internal combustion engine

Infobox
Is a
Patent
Patent
Current assignee
Denso
Denso
Patent jurisdiction
United States Patent and Trademark Office
United States Patent and Trademark Office
Patent number
07801666
Date of patent
September 21, 2010
Patent application number
12153064
Date Filed
May 13, 2008
Patent primary examiner
‌
Mahmoud Gimie

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