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:
Mar. 14, 2006
Filed:
Dec. 19, 2003
Applicant:
Masanobu Ohsaki, Atsugi, JP;
Inventor:
Masanobu Ohsaki, Atsugi, JP;
Assignee:
Hitachi, Ltd., Tokyo-to, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06G 7/70 (2006.01);
U.S. Cl.
CPC ...
Abstract
In a diagnosing process in which a target air-fuel ratio in an air-fuel ratio feedback control is forcibly changed, and based on a response time of a detection signal from an air-fuel ratio sensor to the change, a response characteristic of the air-fuel ratio sensor is diagnosed. When the diagnosis is finished, an air-fuel ratio feedback control signal is returned stepwise to a value immediately before the starting of diagnosis.
Ohsaki, Masanobu. (2006). Air-fuel ratio feedback control apparatus and method for internal combustion engine (U.S. Patent No. 7013214). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/7013214
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile