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Title:
WORK VEHICLE AND METHOD FOR CONTROLLING THE SAME
Document Type and Number:
Japanese Patent JP2014037881
Kind Code:
A
Abstract:

To provide a work vehicle capable of improving control responsiveness of a hydraulic pump and suppressing shock when switching forward/backward movements.

A pump capacity control cylinder controls capacity of a hydraulic pump according to pressure of hydraulic fluid supplied to the pump capacity control cylinder. The pump capacity control cylinder switches a discharge direction of the hydraulic fluid from the hydraulic pump according to a supply direction of the hydraulic fluid supplied to the pump capacity control cylinder. A forward/backward movement changeover valve switches the supply direction of the hydraulic fluid to the pump capacity control cylinder. A pressure control valve controls pressure of the hydraulic fluid supplied to the pump capacity control cylinder according to a command value input into the pressure control valve. A forward/backward movement operation member is operated to switch forward/backward movements of a vehicle. A control section executes pump shuttle control to reduce the command value to the pressure control valve when switching the forward/backward movements by the forward/backward movement operation member.


Inventors:
SHIRAO ATSUSHI
OASA TAKAO
KITAO SHINICHI
Application Number:
JP2012181592A
Publication Date:
February 27, 2014
Filing Date:
August 20, 2012
Export Citation:
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Assignee:
KOMATSU MFG CO LTD
International Classes:
F16H61/438
Attorney, Agent or Firm:
Shinki Global IP Patent Corporation