Login| Sign Up| Help| Contact|

Patent Searching and Data


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)
Application Number:
PCT/JP2007/065656
Publication Date:
February 14, 2008
Filing Date:
August 09, 2007
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
HITACHI CONSTRUCTION MACHINERY (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:
JPH06201019A1994-07-19
JPH04136555A1992-05-11
JPH01240328A1989-09-25
JPH06193730A1994-07-15
JPH05223169A1993-08-31
JPH06193730A1994-07-15
JP2006217077A2006-08-17
Other References:
See also references of EP 2055992A4
Attorney, Agent or Firm:
NAGAI, Fuyuki (2-1-1 Uchisaiwai-cho, Chiyoda-k, Tokyo 11, JP)
Download PDF: