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Patent Searching and Data


Title:
SHIFT CONTROL DEVICE AND SHIFT CONTROL METHOD FOR VEHICLE
Document Type and Number:
WIPO Patent Application WO/2006/011574
Kind Code:
A1
Abstract:
A shift control device and a shift control method for a vehicle capable of reducing shift shock by taking into account a difference between vehicle speeds before and after a shifting. In one of the main inventions, the clutch pressure of the other clutch (forward clutch) is controlled so that an actual vehicle speed calculated by a time when the engagement operation of a clutch for a selected speed stage is started matches a target vehicle speed. Since such a control that the vehicle speed is allowed to match the target vehicle speed is performed, an actual vehicle speed change rate comes within a specified range at least the instant that the engagement operation of the clutch for the selected stage is started. Also, in the other one of the main inventions, as shown in Fig. 7, the clutch pressure of the other clutch (forward clutch) is controlled so that the vehicle speed change rate becomes a specified value by a time when the engagement operation of the clutch for the selected speed stage is completed after the engagement operation is started.

Inventors:
NAKAGAWA TOMOHIRO (JP)
YAMAMOTO SHIGERU (JP)
OKA SHUNJI (JP)
OKADA TOSHIKAZU (JP)
Application Number:
PCT/JP2005/013878
Publication Date:
February 02, 2006
Filing Date:
July 28, 2005
Export Citation:
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Assignee:
KOMATSU MFG CO LTD (JP)
NAKAGAWA TOMOHIRO (JP)
YAMAMOTO SHIGERU (JP)
OKA SHUNJI (JP)
OKADA TOSHIKAZU (JP)
International Classes:
F16H61/06; B60K31/00; F16D48/02; F16H61/14; F16H59/44; F16H59/66; F16H61/682
Foreign References:
JPH08320067A1996-12-03
JPH06323419A1994-11-25
JPH06331016A1994-11-29
JPH03186651A1991-08-14
Attorney, Agent or Firm:
Kimura, Takahisa (8-11 Minato 1-chom, Chuo-ku Tokyo 43, JP)
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