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:
Feb. 15, 2011
Filed:
Nov. 30, 2007
Applicants:
Shinya Kondou, Gotemba, JP;
Yasuhiro Oi, Numazu, JP;
Inventors:
Shinya Kondou, Gotemba, JP;
Yasuhiro Oi, Numazu, JP;
Assignee:
Toyota Jidosha Kabushiki Kaisha, Toyota-shi, JP;
Primary Examiner:
Int. Cl.
CPC ...
F02M 7/28 (2006.01);
U.S. Cl.
CPC ...
Abstract
Immediately after startup of the engine, secondary air is supplied by an air pump into each exhaust branch passage via a secondary-air supply passage. A pressure sensor is disposed in the secondary-air supply passage. An output voltage of the pressure sensor decreases as the battery voltage decreases. When the battery voltage is lower than a permissible voltage, the output value of the pressure sensor is inhibited from being used as an output value representing the pressure. Thus, atmospheric pressure can be accurately detected.