Title:
WORK VEHICLE SPEED-CHANGE CONTROL DEVICE AND SPEED-CHANGE CONTROL METHOD
Document Type and Number:
WIPO Patent Application WO/2006/022154
Kind Code:
A1
Abstract:
A work vehicle speed-change control device which reduces the amount of generated heat of the speed-change clutch of a transmission and speed-change shock without prolonging the cycle time and incurring a decrease in work efficiency, thereby reducing the load on the clutch; and a speed-change control method. At a time (tE) between a time (tA) at which a speed-change clutch (reverse clutch (22)) is disengaged before speed change and a time (tD) at which engagement of a speed change clutch (advance clutch (21) terminates after a selected speed change, the clutch pressure (Pm) on an input cutch (10) is reduced to allow the engaged state to change to a power transmittable slide state.
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Inventors:
SHIZUME MASARU (JP)
Application Number:
PCT/JP2005/014852
Publication Date:
March 02, 2006
Filing Date:
August 12, 2005
Export Citation:
Assignee:
KOMATSU MFG CO LTD (JP)
SHIZUME MASARU (JP)
SHIZUME MASARU (JP)
International Classes:
F16D48/02; B60K17/02; B60K20/00; (IPC1-7): F16D48/02; B60K41/00; B60K41/22
Foreign References:
| JPH074521A | 1995-01-10 | |||
| JP3354672B2 | 2002-12-09 | |||
| JPH01303347A | 1989-12-07 |
Attorney, Agent or Firm:
Kimura, Takahisa (8-11 Minato 1-chome, Chuo-k, Tokyo 43, JP)
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