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:
Jul. 21, 2020
Filed:
Feb. 16, 2017
Jatco Ltd, Fuji-shi, Shizuoka, JP;
Nissan Motor Co. Ltd., Yokohama-shi, Kanagawa, JP;
JATCO LTD, Fuji-Shi, JP;
NISSAN MOTOR CO., LTD., Yokohama-Shi, JP;
Abstract
Abnormality detection device for automatic transmission of invention has automatic transmissionA connected to vehicle driving sourcethrough clutch; range detector detecting selection range of selector leverand outputting detection signal; manual valveconfigured to, when selector lever is positioned at drive range position, engage clutch and bring automatic transmission into power transmission state, and when selector lever is positioned at range position except drive range position, disengage clutch and bring automatic transmission into power non-transmission state. Device further has engagement control unitB controlling clutch from disengagement state toward engagement direction when no-signal state in which signal is not outputted from range detector continues for first predetermined time or more; engagement judgment unitC judging engagement of clutch during engagement control; and abnormality determination unitD determining, when engagement is judged, that range detector is in no-signal abnormality indicating that no signal is outputted.