Title:
作業車両の走行制御装置
Document Type and Number:
Japanese Patent JP5301509
Kind Code:
B2
Abstract:
A working vehicle travel control apparatus, comprising: a variable displacement hydraulic pump; a variable displacement hydraulic motor connected in a closed circuit to the hydraulic pump and driven upon pressure oil from the hydraulic pump; a first control unit controls a motor displacement angle of the hydraulic motor by an electrical signal; a constant mesh transmission includes a clutch device that includes a High clutch section transmits power at a first transmission gear ratio and a Low clutch section that transmits power at a second transmission gear ratio, which is greater than the first transmission gear ratio, the constant mesh transmission transmits or interrupts power from the hydraulic motor; and a second control unit controls the first control unit so as to reduce the motor displacement angle to a predetermined value when the transmission is switched from the first transmission gear ratio to the second transmission gear ratio.
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Inventors:
Yasuo Yamazaki
Akira Kawahara
Akira Kawahara
Application Number:
JP2010194083A
Publication Date:
September 25, 2013
Filing Date:
August 31, 2010
Export Citation:
Assignee:
Hitachi Construction Machinery Co., Ltd.
International Classes:
F16H47/02; F16H61/02
Domestic Patent References:
| JP2002174333A | ||||
| JP2008137524A | ||||
| JP2002139148A |
Foreign References:
| WO2003091606A1 |
Attorney, Agent or Firm:
Fuyuki Nagai