Title:
CONTROL DEVICE FOR AUTOMATIC TRANSMISSION AND CONTROL METHOD FOR AUTOMATIC TRANSMISSION
Document Type and Number:
WIPO Patent Application WO/2017/022772
Kind Code:
A1
Abstract:
The present invention relates to a control device (12) of a transmission (20, 30) which has an auxiliary transmission mechanism (30), the control device determining that the auxiliary transmission mechanism is in a neutral state if a first condition that an actual transmission ratio of the auxiliary transmission mechanism is outside a first normal detection range is satisfied and a second condition that an input-output rotational speed difference of the auxiliary transmission mechanism is outside a second normal detection range is also satisfied. The present invention further relates to a control device of a transmission which has an auxiliary transmission mechanism, the control device determining that the auxiliary transmission mechanism is in a neutral state if either a third condition that the vehicle speed is higher than a set vehicle speed and an input-output rotational speed ratio of the auxiliary transmission mechanism is outside a first normal detection range or a fourth condition that the vehicle speed is lower than a set vehicle speed and the input-output rotational speed difference of the auxiliary transmission mechanism is outside a second normal detection range is satisfied. The present invention further relates to: a control method in which determination of being in a neutral state is performed on the basis of the first condition and the second condition; and a control method in which determination of being in a neutral state is performed on the basis of the third condition and the fourth condition.
Inventors:
KONDO HARUKA (JP)
ITOU YOUJI (JP)
HAMANO MASAHIRO (JP)
MATSUI JUNKI (JP)
TSUCHIYA HIROSHI (JP)
YAMAJI MASASHI (JP)
ITOU YOUJI (JP)
HAMANO MASAHIRO (JP)
MATSUI JUNKI (JP)
TSUCHIYA HIROSHI (JP)
YAMAJI MASASHI (JP)
Application Number:
PCT/JP2016/072694
Publication Date:
February 09, 2017
Filing Date:
August 02, 2016
Export Citation:
Assignee:
JATCO LTD (JP)
International Classes:
F16H61/12; F16H59/40; F16H59/42; F16H61/682
Foreign References:
| JP2007024231A | 2007-02-01 | |||
| JP2007162846A | 2007-06-28 | |||
| JP2010151263A | 2010-07-08 | |||
| JP2010276084A | 2010-12-09 |
Attorney, Agent or Firm:
GOTO, Masaki et al. (JP)
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