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. 23, 2020
Filed:
Dec. 03, 2018
Subaru Corporation, Tokyo, JP;
Yoshitaka Takahashi, Tokyo, JP;
SUBARU CORPORATION, Tokyo, JP;
Abstract
An abnormality determination device of a lock up clutch includes a controller and a determining unit. The controller sets a lock up clutch in a torque converter at an engaged state or a disengaged state. The torque converter is provided in an automatic transmission of a vehicle. The determining unit determines, on the condition that deceleration of the vehicle on travel with the lock up clutch in the engaged state causes a control signal for disengagement to be outputted from the controller, the presence or the absence of the abnormality in the lock up clutch, on the basis of a determination result as to whether or not a difference between the number of engine rotations and the number of turbine rotations is equal to or larger than a first threshold that varies with a rate of deceleration of the vehicle.