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:
Aug. 01, 2006
Filed:
Nov. 30, 2001
Shinya Fujimoto, Hyogo, JP;
Norio Matsumoto, Tokyo, JP;
Shinya Fujimoto, Hyogo, JP;
Norio Matsumoto, Tokyo, JP;
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
An abnormality detection apparatus of an engine temperature adjusting thermostat is provided which is capable of accurately grasping the state of an amount of heat generated by an engine to prevent misdetection of abnormality in the thermostat for improved reliabilty. The abnormality detection apparatus includes a heat amount parameter detection section for detecting an operating condition related to an amount of heat generated by the engine as a heat amount parameter (EQ), an abnormality determination section for comparing the temperature of cooling water with a predetermined allowable lower limit to determine abnormality of the thermostat when the heat amount parameter (EQ) reaches a reference heat amount (EQo), a small heat amount determination section for determining whether the amount of heat generated by the engine is in a small amount state, a large heat amount determination section for determining whether the amount of heat generated by the engine is in a large amount state, and an abnormality determination prohibition section for disabling the abnormality determination section when at least one of the small amount state and the large amount state of the amount of heat is determined.