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. 23, 2019
Filed:
Oct. 26, 2016
Hyundai Autron Co., Ltd., Seongnam-si, KR;
Kwang Hyuk Lim, Suwon-si, KR;
Chang Kyu Shin, Gunpo-si, KR;
Hyundai Autron Co., Ltd., Seongnam-si, KR;
Abstract
A method of protecting a frictional element of a clutch for an automatic transmission includes calculating an equivalent rotation number X of a frictional element using a trigonometric function equation on the basis of a virtual right triangle, if a rotation number of an engine exceeds a predetermined boundary value during a driving in a constant speed stage over a predetermined shift stage of an automatic transmission, entering a frictional element protection mode, if the equivalent rotation number X of the frictional element exceeds a predetermined critical value in a state in which the control unit enters the frictional element protection mode, reducing the rotation number of the engine by applying a target engine torque limiting value.