Title:
METHOD FOR CONTROLLING A HYDRAULIC PUMP OF A WHEEL LOADER
Document Type and Number:
WIPO Patent Application WO/2012/096526
Kind Code:
A2
Abstract:
The present invention relates to a method for controlling a hydraulic pump of a wheel loader, in which the flow rate of the hydraulic pump is reduced to improve the acceleration performance of the wheel loader when there is a request for improving the acceleration performance of the wheel loader while an increase in the amount of fuel injected is not allowed due to limits on fume production during the travel-combined acceleration of the wheel loader. In addition, a method for sequentially controlling the flow rate of a pump is provided, which involves controlling a hydraulic pump firstly such that the flow rate of a fan pump is reduces, said fan pump not being directly associated with a working machine, and secondly, as needed, such that the flow rate of a pump of a working system, which drives a working machine, is reduced. Thus, the torque of the working system may be reduced with minimal effects on working performance when an engine has reached the rated limit thereof at a transition state, thereby improving the acceleration performance of the wheel loader.
Inventors:
PARK MOO YOUNG (KR)
HEO YEON HAENG (KR)
HEO YEON HAENG (KR)
Application Number:
PCT/KR2012/000293
Publication Date:
July 19, 2012
Filing Date:
January 12, 2012
Export Citation:
Assignee:
DOOSAN INFRACORE CO LTD (KR)
PARK MOO YOUNG (KR)
HEO YEON HAENG (KR)
PARK MOO YOUNG (KR)
HEO YEON HAENG (KR)
International Classes:
F15B11/028; F15B13/02
Domestic Patent References:
| WO2007074670A1 | 2007-07-05 | |||
| WO2006006600A1 | 2006-01-19 |
Foreign References:
| JPH11181842A | 1999-07-06 | |||
| JP2001295681A | 2001-10-26 |
Other References:
None
Attorney, Agent or Firm:
KIM, Kee-Hyo (KR)
김기효 (KR)
김기효 (KR)
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Claims: