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. 26, 2014
Filed:
Jul. 27, 2012
Hyunjun Son, Hwaseong-si, KR;
Hyunjun Son, Hwaseong-si, KR;
Hyundai Motor Company, Seoul, KR;
Abstract
A hydraulic pressure control system for a torque converter includes a lock-up clutch operated according to pressure difference between an engagement and disengagement side oil chambers, a first hydraulic line communicated with the disengagement side oil chamber, second and third hydraulic lines communicated with the engagement side oil chamber, and a lock-up switch valve and a torque converter hydraulic pressure control valve that generate pressure difference between the second and the third hydraulic line communicated so that fluid within the engagement side oil chamber is circulated in lock-up on state of the lock-up clutch, and the lock-up switch valve and the torque converter hydraulic pressure control valve generate pressure difference between the second and the third hydraulic line in slip state of the lock-up clutch higher than the pressure difference between the second and the third hydraulic line in the lock-up on state of the lock-up clutch.