Title:
ANTI-SKIDDING METHOD FOR A CONSTRUCTION VEHICLE WITH A HYDRAULIC TRANSMISSION, SYSTEM THEREOF, AND GRADER
Document Type and Number:
WIPO Patent Application WO/2009/092230
Kind Code:
A1
Abstract:
An anti-skidding method for a construction vehicle with a hydraulic transmission
comprises steps of: receiving the running state information including detected
speeds of the left and right driving hydraulic motors etc; comparing current
speeds of both sides wheels and combining the state record of the previous cycle
for determining the skidding state; if the vehicle was in the normal running state
at previous cycle, and at this cycle the difference between the speeds of both
sides wheels is over a predetermined boundary point, determining the wheel with
high speed is skidding; if the vehicle was already in the skidding state at previous
cycle, determining whether the vehicle is released from the skidding state according
to the detected information, if yes, determining the vehicle has been released
from the skidding state, otherwise, determining the vehicle is skidding; when
it is determined that the vehicle is skidding, decreasing the displacement of
the hydraulic motor of the skidding side; when it is determined that the vehicle
is released from skidding, adjusting the displacement of the hydraulic motor
to the original displacement. Present application can prevent the drop of total
pressure of the system or the insufficiency of vehicle drive capability.
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Inventors:
YI XIAOGANG (CN)
Application Number:
PCT/CN2008/073486
Publication Date:
July 30, 2009
Filing Date:
December 12, 2008
Export Citation:
Assignee:
SANY HEAVY IND CO LTD (CN)
YI XIAOGANG (CN)
YI XIAOGANG (CN)
International Classes:
F16H61/42; B60K28/16; E02F3/85
Foreign References:
| US20060243511A1 | 2006-11-02 | |||
| US20050217261A1 | 2005-10-06 | |||
| CN1236717A | 1999-12-01 |
Other References:
WANG, X. ET AL.: "Study on Electronic Anti-skidding Control for Hydrostatic Motor Grader", EARTHWORK MACHINERY & CONSTRUCTION TECHNOLOGY, September 2007 (2007-09-01), pages 53 - 56
Attorney, Agent or Firm:
UNITALEN ATTORNEYS AT LAW (Scitech PlaceNo.22, Jian Guo Men Wai Ave., Chao Yang District, Beijing 4, CN)
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