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:
Apr. 15, 2014
Filed:
May. 18, 2012
Hisashi Okazawa, Hiroshima, JP;
Masaaki Sato, Hiroshima, JP;
Hirofumi Ohmori, Hiroshima, JP;
Nobuhiro Fujii, Hiroshima, JP;
Yuji Wakida, Hiroshima, JP;
Tomokuni Kusunoki, Hiroshima, JP;
Hisashi Okazawa, Hiroshima, JP;
Masaaki Sato, Hiroshima, JP;
Hirofumi Ohmori, Hiroshima, JP;
Nobuhiro Fujii, Hiroshima, JP;
Yuji Wakida, Hiroshima, JP;
Tomokuni Kusunoki, Hiroshima, JP;
Mazda Motor Corporation, Hiroshima, JP;
Abstract
A state of an oil pressure is determined based on combination of activation of an oil pressure switch and information of the temperature detected by a temperature sensor and an engine speed detected by an engine speed sensor such that determination of the oil-pressure state is conducted from a lower engine-speed range in a case in which the temperature detected by the temperature sensor is relatively low, compared with a case in which the temperature detected by the temperature sensor is relatively high. Accordingly, the oil-pressure state can be properly determined not only in a high engine-speed range but in a low engine-speed range, by utilizing the simple oil pressure switch activated to the conductive state in response to the oil pressure.