Title:
SPEED CHANGE CONTROLLER AND SPEED CHANGE RATIO CONTROL METHOD OF WORKING TRUCK
Document Type and Number:
WIPO Patent Application WO/2008/111655
Kind Code:
A1
Abstract:
A working truck using the output from an internal combustion engine (30) for working
power and traveling power comprises an accelerator pedal (1) for raising the
rotational speed of the internal combustion engine (30) depending on a stepping-on
operation, and a gearbox (40) for changing the speed of rotation of the internal
combustion engine (30) for use as traveling power. The speed change ratio controller
of the gearbox (40) calculates a first target vehicle speed (Wne) dependent on
the rotational speed of the internal combustion engine (30), calculates a second
target vehicle speed (Wu) dependent on the stepping-on amount of the accelerator
pedal (1), and controls speed change ratio of the gearbox (40) based on the lower
one of these target vehicle speeds, thus attaining a vehicle speed dependent
on the stepping-on amount of the accelerator pedal (1) for traveling even during
high speed rotation of the internal combustion engine (30).
Inventors:
SHIMIZU TAKEO (JP)
MORI NAOTOSHI (JP)
MORI NAOTOSHI (JP)
Application Number:
PCT/JP2008/054677
Publication Date:
September 18, 2008
Filing Date:
March 07, 2008
Export Citation:
Assignee:
KAYABA INDUSTRY CO LTD (JP)
SHIMIZU TAKEO (JP)
MORI NAOTOSHI (JP)
SHIMIZU TAKEO (JP)
MORI NAOTOSHI (JP)
International Classes:
F16H61/02; F02D29/00; F16H61/40; F16H61/42; F16H61/421; F16H61/431; F16H61/439; F16H59/18; F16H59/42
Foreign References:
| JPH07215096A | 1995-08-15 | |||
| JP2006219066A | 2006-08-24 | |||
| JP2001253789A | 2001-09-18 | |||
| JPH0681946A | 1994-03-22 | |||
| JP2002340182A | 2002-11-27 |
Attorney, Agent or Firm:
GOTO, Masaki (3-1 Kasumigaseki 3-chome, Chiyoda-k, Tokyo 13, JP)
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