Title:
TRAVEL CONTROL DEVICE FOR HYDRAULICALLY DRIVEN VEHICLE
Document Type and Number:
WIPO Patent Application WO/2008/018563
Kind Code:
A1
Abstract:
A travel control device for a hydraulically driven vehicle has a hydraulic motor
for traveling, driven by oil discharged from a hydraulic pump, a reduction mechanism
for reducing the rotation speed of the hydraulic motor to transmit the result
to wheels and whose reduction ratio is changeable, a pressurized-oil control
device for controlling the flow of pressurized oil from the hydraulic pump to
the hydraulic motor depending on the amount of operation of a travel pedal, a reduction
ratio detection device for detecting a reduction ratio of the reduction mechanism,
and an acceleration limitation device for limiting, when the reduction ratio
detected by the reduction ratio detection device meets an acceleration limitation
condition that is above or equal to a predetermined value, acceleration operation
of the hydraulic motor by the travel pedal.
Inventors:
KODAKA KATSUAKI (JP)
SATAKE HIDETOSHI (JP)
SATAKE HIDETOSHI (JP)
Application Number:
PCT/JP2007/065656
Publication Date:
February 14, 2008
Filing Date:
August 09, 2007
Export Citation:
Assignee:
HITACHI CONSTRUCTION MACHINERY (JP)
KODAKA KATSUAKI (JP)
SATAKE HIDETOSHI (JP)
KODAKA KATSUAKI (JP)
SATAKE HIDETOSHI (JP)
International Classes:
F16H47/02; E02F9/22; F16H61/00; F16H61/40; F16H61/4183; F16H61/42; F16H61/68; F16H59/06; F16H59/44; F16H59/70; F16H61/66; F16H61/682
Foreign References:
JPH06201019A | 1994-07-19 | |||
JPH04136555A | 1992-05-11 | |||
JPH01240328A | 1989-09-25 | |||
JPH06193730A | 1994-07-15 | |||
JPH05223169A | 1993-08-31 | |||
JPH06193730A | 1994-07-15 | |||
JP2006217077A | 2006-08-17 |
Other References:
See also references of EP 2055992A4
Attorney, Agent or Firm:
NAGAI, Fuyuki (2-1-1 Uchisaiwai-cho, Chiyoda-k, Tokyo 11, JP)
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