Title:
DEVICE FOR CONTROLLING AUTOMATIC TRANSMISSION AND METHOD FOR CONTROLLING AUTOMATIC TRANSMISSION
Document Type and Number:
WIPO Patent Application WO/2017/043543
Kind Code:
A1
Abstract:
The present invention provides a device for controlling an automatic transmission, the device controlling an automatic transmission provided with a variator provided on a motive power transmission path between a drive source and drive wheels of a vehicle, and a frictional fastening element provided between the variator and the drive wheels so as to be capable of blocking the transmission of motive power through the motive power transmission path. While a vehicle is stopped, the frictional fastening element is released to increase the gear-change ratio of the variator to a prescribed target gear-change ratio, and when the frictional fastening element is released while the vehicle is stopped, learning is executed pertaining to hydraulic-pressure control of the frictional fastening element. At the time of learning at which learning is executed while the vehicle is stopped, the target gear-change ratio is reduced to be lower than the ratio achieved while the vehicle is stopped during times other than the time of learning.
Inventors:
KAWAMOTO YOSHINOBU (JP)
KASAHARA SEIJI (JP)
MA HAIBIN (JP)
KASAHARA SEIJI (JP)
MA HAIBIN (JP)
Application Number:
PCT/JP2016/076337
Publication Date:
March 16, 2017
Filing Date:
September 07, 2016
Export Citation:
Assignee:
JATCO LTD (JP)
NISSAN MOTOR (JP)
NISSAN MOTOR (JP)
International Classes:
F16H61/02; F16H61/20; F16H61/662
Foreign References:
| JP2015055337A | 2015-03-23 | |||
| JP2011247370A | 2011-12-08 | |||
| JP2004190756A | 2004-07-08 |
Other References:
See also references of EP 3348873A4
Attorney, Agent or Firm:
GOTO, Masaki et al. (JP)
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