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Patent Searching and Data

Document Type and Number:
WIPO Patent Application WO/2019/045157
Kind Code:
The present invention provides a 4-way torque converter which reduces working pressure of a lockup clutch, thereby enabling more efficient control in lockup operation. The 4-way torque converter according to the present invention comprises a circulation chamber for internal oil circulation, a lockup chamber for the operation of a lockup clutch, and a compensation chamber for compensating for working pressure of the lockup clutch, and comprises: a lockup piston which has a distal end thereof connected to a lockup drum and a multi-plate friction plate of the lockup clutch, and divides the spaces in the lockup chamber and the compensation chamber into two parts based on the inner and outer circumferential surfaces thereof; a lockup plate which is in contact with the inside of a bent end of the lockup piston and forms an interface of the lockup chamber disposed between the circulation chamber and the compensation chamber; a pilot hub which is coupled to a turbine spline hub having directly connected thereto an input shaft for transferring the torque of an engine to a transmission, and to an outer surface of which a front cover and an inner diametral end of the lockup plate are fixed and an inner diametral end of the lockup piston is slidably coupled; and a balance plate which has the shape of an annular bent flange coupled to the lockup piston, and an end of which is slidably in contact with a refraction surface of the front cover, thereby forming an interface of the compensation chamber.

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:
Foreign References:
Attorney, Agent or Firm:
YOU ME PATENT AND LAW FIRM (115 Teheran-ro, Gangnam-gu, Seoul, 06134, KR)
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