Title:
GEAR SHIFT CONTROL METHOD AND GEAR SHIFT CONTROL DEVICE FOR ELECTRIC VEHICLE
Document Type and Number:
WIPO Patent Application WO/2013/058238
Kind Code:
A1
Abstract:
The present invention relates to a gear shift control method applicable to an electric vehicle equipped with a transmission having a two-way roller clutch interposed between a transmission input shaft coupled to a motor shaft and a gear train at each gear position. A gear shift actuator is operated and the contact between a friction plate and an outer race at a current gear position is released. An electric motor for traveling is rotated in a torque control mode and the engagement of a roller clutch at the current gear position is released. The rotational speeds of the outer and inner races of the roller clutch at a target gear position are synchronously operated. The gear shift actuator is operated and the friction plate and the outer race at the target gear position are contacted each other. The roller clutch at the target gear position is engaged while controlling the electric motor in a rotational speed control mode.
Inventors:
LI GUODONG (JP)
ITAKURA YOSHINORI (JP)
ISOBE FUMIHIRO (JP)
ITAKURA YOSHINORI (JP)
ISOBE FUMIHIRO (JP)
Application Number:
PCT/JP2012/076695
Publication Date:
April 25, 2013
Filing Date:
October 16, 2012
Export Citation:
Assignee:
NTN TOYO BEARING CO LTD (JP)
International Classes:
F16H61/04; B60W10/02; B60W10/08; B60W30/19; B60W30/20; F16H61/28; F16H61/68
Foreign References:
| JP2011057030A | 2011-03-24 | |||
| JP2006056343A | 2006-03-02 | |||
| JP2010202190A | 2010-09-16 |
Attorney, Agent or Firm:
SUGIMOTO, Shuji et al. (JP)
Shuji Sugimoto (JP)
Shuji Sugimoto (JP)
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