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Title:
作業車両の変速制御装置
Document Type and Number:
Japanese Patent JP5162785
Kind Code:
B2
Abstract:
A speed change control device of a working vehicle, in which a power of an engine (10) is transmitted as a driving force to wheels (60) through a modulation clutch (20), a torque converter (30) having a lockup clutch (40), and a transmission (50), comprising: a speed change operator (70); and a controller (80) that, depending on certain parameters, performs a clutch control so as to: cause a lockup state in which the modulation clutch (20) is engaged while the lockup clutch (40) is engaged, cause a lockup and modulation clutch slipping state in which the modulation clutch (20) slips while the lockup clutch (40) remains engaged, cause a both clutch slipping state in which both the lockup clutch (40) and the modulation clutch (20) slip, and cause a torque converter operation state in which the modulation clutch (20) is engaged while the lockup clutch (40) is released.

Inventors:
Eiji Yamaguchi
Kukuma Masaaki
Taka Kuze
Application Number:
JP2007254368A
Publication Date:
March 13, 2013
Filing Date:
September 28, 2007
Export Citation:
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Assignee:
KOMATSU LTD.
International Classes:
F16H61/14; F16D48/02; F16H45/00
Domestic Patent References:
JP8004876A
JP4049253U
JP2006022939A
Foreign References:
WO2005040629A1
Attorney, Agent or Firm:
Takahisa Kimura
Yoshiyuki Obata



 
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