Title:
DEVICE AND METHOD FOR HYDRAULICALLY CONTROLLING CONTINUOUSLY VARIABLE TRANSMISSION FOR VEHICLE
Document Type and Number:
WIPO Patent Application WO/2017/043459
Kind Code:
A1
Abstract:
This continuously variable transmission for a vehicle is provided with a transmission controller (12) for shifting gears in a variator (20) and an auxiliary gearshift mechanism (30), a line pressure regulating valve (11a), a primary pressure regulating valve (11b), and a secondary pressure regulating valve (11c). The transmission controller (12) is provided with a line pressure control unit (fig. 4) that, when oil vibration occurs in the actual oil pressure at the primary pressure (Ppri) and/or secondary pressure (Psec), the line pressure (PL) is caused to exceed the line pressure (PL) before oil vibration occurred. The line pressure control unit (fig. 4) continues to increase the line pressure (PL) until gear shifting in the auxiliary gearshift mechanism (30) concludes in order to yield stable gear shifting when the gears are shifted in the auxiliary gearshift mechanism (30) with the line pressure (PL) in an increased state.
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Inventors:
KAWAMOTO YOSHINOBU (JP)
TANAKA HIROYASU (JP)
TANAKA HIROYASU (JP)
Application Number:
PCT/JP2016/076067
Publication Date:
March 16, 2017
Filing Date:
September 06, 2016
Export Citation:
Assignee:
JATCO LTD (JP)
NISSAN MOTOR (JP)
NISSAN MOTOR (JP)
International Classes:
F16H61/02; F16H61/662
Domestic Patent References:
| WO2014042032A1 | 2014-03-20 |
Foreign References:
| JP2007187203A | 2007-07-26 | |||
| JP2007205439A | 2007-08-16 |
Other References:
See also references of EP 3348871A4
Attorney, Agent or Firm:
KOBAYASHI, Hiromichi et al. (JP)
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