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:
Nov. 21, 2017
Filed:
Jul. 31, 2014
Nissan Motor Co., Ltd., Yokohama-shi, Kanagawa, JP;
Hatsuki Morinaga, Kanagawa, JP;
Nissan Motor Co., Ltd., Yokohama, JP;
Abstract
A sensor abnormality determining apparatus is applied to an inverter that includes: a power element; a cooling water circulation path for cooling the power element; a temperature sensor that detects a temperature of the power element; and a water temperature sensor that detects a temperature of the cooling water circulating in the cooling water circulation path. The sensor abnormality determining apparatus includes: an abnormality determining section and a determination temperature setting section. The abnormality determining section determines the temperature sensor is abnormal when a temperature difference between the detected power element temperature and the detected water temperature is larger than a prescribed determination temperature difference. The determination temperature setting section sets the prescribed determination temperature difference to a lower value when the detected power element temperature is lower than the detected water temperature as compared to when the detected power element temperature is higher than the detected water temperature.