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Title:
WORK VEHICLE, AND WORK VEHICLE CONTROL METHOD
Document Type and Number:
WIPO Patent Application WO/2015/114980
Kind Code:
A1
Abstract:
Provided are a hybrid type work vehicle that increases a vehicle speed limit speed, and a work vehicle control method. The work vehicle is provided with a power transmission device and a control unit. The power transmission device includes a mode switch mechanism. The mode switch mechanism switches a drive force transmission route in the power transmission device to one of at least two modes. The at least two modes include a first mode and a second mode used in a speed ratio range higher than the first mode. When the vehicle speed belongs to a range above a first vehicle speed at which the speed ratio reaches a predetermined first value smaller than a maximum value of the speed ratio that the power transmission device can take, the control unit increases the rotational speed of an engine from a first rotational speed of the engine corresponding to the first vehicle speed. The first value is greater than a second value of the speed ratio at the time when, with the transmission route in the second mode, a rotational speed of a first motor and a rotational speed of a second motor are equal.

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Inventors:
MIYAMOTO SHUNSUKE (JP)
YOSHIZAWA MASAO (JP)
FUJIWARA YASUO (JP)
Application Number:
PCT/JP2014/083432
Publication Date:
August 06, 2015
Filing Date:
December 17, 2014
Export Citation:
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Assignee:
KOMATSU MFG CO LTD (JP)
International Classes:
F16H61/02; B60K6/365; B60K6/445; B60W10/06; B60W10/08; B60W10/10; B60W20/00; E02F9/20; E02F9/22; F02D29/00; F16H3/44; F16H3/72; F16H59/18; F16H59/40; F16H59/42; F16H59/44; F16H61/682
Foreign References:
JP2010132020A2010-06-17
JP2012106636A2012-06-07
JP2010070008A2010-04-02
JP2007069632A2007-03-22
JP2011183990A2011-09-22
JP2009280176A2009-12-03
JP2008120132A2008-05-29
JP2006329244A2006-12-07
JP2006329244A2006-12-07
Other References:
See also references of EP 3040584A4
Attorney, Agent or Firm:
Shinjyu Global IP (JP)
fresh green -- a global IP patent business corporation (JP)
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