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:
Jun. 22, 2010
Filed:
Dec. 10, 2007
Tatsuhisa Yokoi, Toyota, JP;
Yasuo Harada, Toyota, JP;
Ryouhei Kusunoki, Toyonaka, JP;
Hidetomo Horikawa, Ibaraki, JP;
Ryoichi Kitaoka, Ikeda, JP;
Tatsuhisa Yokoi, Toyota, JP;
Yasuo Harada, Toyota, JP;
Ryouhei Kusunoki, Toyonaka, JP;
Hidetomo Horikawa, Ibaraki, JP;
Ryoichi Kitaoka, Ikeda, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota-Shi, JP;
Abstract
An abnormality detection apparatus for detecting an abnormality of an oil level sensor having lower and upper oil level detectors includes: a recording portion that records the output of the upper oil level detector before the internal combustion engine is started; and a determining portion that determines that the upper oil level detector has an abnormality if the output of the lower oil level detector is indicating, after the start of the internal combustion engine, that the oil level is higher than the first reference oil level while the output of the upper oil level detector recorded by the recording portion is indicating that the oil level was lower than the second reference oil level before the start of the internal combustion engine.