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Patent Searching and Data


Title:
POWER TRANSMISSION DEVICE AND METHOD FOR CONTROLLING SAME
Document Type and Number:
WIPO Patent Application WO/2018/216649
Kind Code:
A1
Abstract:
This power transmission device (20) is mounted on a vehicle (10) having an engine (12) which stops operating when the speed of the vehicle decreases to a predetermined value. The power transmission device (20) includes: an oil pump (30) driven by the engine (12); a hydraulic control device (70) for regulating the pressure of oil discharged from the oil pump (30); a stepless speed change mechanism (40) in which the width of the groove between a primary pulley (43) and a secondary pulley (45) is set by hydraulic pressure from the hydraulic control device (70); a hydraulic engagement element (C1) engaged by hydraulic pressure from the hydraulic control device (70) to connect the stepless speed change mechanism (40) and the engine (12); a gripping pressure sensor (78) for detecting gripping pressure under which the belt (46) of the stepless speed change mechanism (40) is gripped; and a control device (70, 211) for disengaging the hydraulic engaging element (C1) when the gripping pressure with which the belt (46) is gripped and which is detected by the gripping pressure sensor (78) decreases to a level lower than or equal to a threshold value after the engine (12) stops operating because of a decrease in the speed of the vehicle (10).

Inventors:
NOZAKI, Masahiro (LTD. 10 Takane, Fujii-cho, Anjo-sh, Aichi 92, 〒4441192, JP)
Application Number:
JP2018/019466
Publication Date:
November 29, 2018
Filing Date:
May 21, 2018
Export Citation:
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Assignee:
AISIN AW CO., LTD. (10 Takane, Fujii-cho Anjo-sh, Aichi 92, 〒4441192, JP)
International Classes:
F16H61/00; F02D29/02; F16H59/48; F16H59/54; F16H59/68; F16H59/74; F16H61/662; F16H63/50
Foreign References:
JP2015113912A2015-06-22
JP2012117604A2012-06-21
JP2012051468A2012-03-15
JP2006046525A2006-02-16
JP2001263473A2001-09-26
JPH06109121A1994-04-19
Attorney, Agent or Firm:
ITEC INTERNATIONAL PATENT FIRM (Gotanda Daiichiseimei Bldg, 19-3 Nishigotanda 2-chome, Shinagawa-k, Tokyo 31, 〒1410031, JP)
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