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Patent Searching and Data

Document Type and Number:
WIPO Patent Application WO/2019/045159
Kind Code:
The present invention provides a 4-way torque converter in which a front cover and a piston hub are integrally formed, thereby enabling effective control of lockup operation. The 4-way torque converter according to the present invention comprises a primary chamber for internal oil circulation, a secondary chamber, disposed between a front cover and a lockup piston, for supplying hydraulic pressure for a lockup clutch, and a tertiary chamber, disposed between the lockup piston and a balance plate, for compensating for working pressure of the lockup clutch and inner pressure of the torque converter, and comprises: the lockup piston an end of an outer diametral part of which is connected to a multi-plate friction plate of the lockup clutch and divides the secondary chamber and the tertiary chamber based on the inner and outer circumferential surfaces thereof; the balance plate which is in contact with the inside of an end of a circumferential end flange of the lockup piston and forms an interfacial end of the tertiary chamber disposed between the primary chamber and the secondary chamber; and the front cover which has one end thereof fixed to a pilot and is integrally provided with an inner diametral end bent flange which is coupled to a turbine spline hub of an input shaft for transferring the torque of an engine to a transmission and has an inner diametral end of the balance plate fixed at a distal end thereof, and an inner diametral end of the lockup piston slidably coupled at the distal end thereof.

LEE, Jungho (49-1, Suseong-ro 64-gil,Suseong-gu, Daegu, 42132, KR)
LEE, Jin-Soo (35-17, Sinambuk-ro 7-gil,Dong-gu, Daegu, 41195, KR)
HONG, Soon-Seok (103-1201, 842-7 Dalgubeol-daero, Dasa-eup,,Dalseong-gun, Daegu, 42910, KR)
SHIN, Soon-Cheol (710-1803, 1526 Bongyeong-ro, Yeongtong-gu,,Suwon-si, Gyeonggi-do, 16701, KR)
Application Number:
Publication Date:
March 07, 2019
Filing Date:
September 06, 2017
Export Citation:
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VALEO KAPEC CO., LTD (113 Hosandong-ro, Dalseo-gu, Daegu, 42709, KR)
International Classes:
F16H45/02; F16H41/24
Foreign References:
Attorney, Agent or Firm:
YOU ME PATENT AND LAW FIRM (115 Teheran-ro, Gangnam-gu, Seoul, 06134, KR)
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