Title:
LOAD CONTROLLER FOR ENGINE OF WORK VEHICLE
Document Type and Number:
WIPO Patent Application WO/2006/028042
Kind Code:
A1
Abstract:
A load controller for the engine of a work vehicle capable of preventing the engine from being stopped when the rise of the torque of the engine cannot follow up the abrupt rise of hydraulic pressure load. The work vehicle comprises the engine (1) in which a target rotational speed is set between a low idle rotational speed and a high idle rotational speed, a plurality of variable displacement hydraulic pumps (7, 8, 9) driven by the engine (1), a plurality of hydraulic actuators (13, 14, 15) to which hydraulic oil discharged from the plurality of variable displacement hydraulic pumps (7, 8, 9) is supplied, absorbed torque changing means (19, 22, 23) changing absorbed torques for one or more of the variable displacement hydraulic pumps (7, 8, 9), a rotational speed detection means (1a) detecting the rotational speed of the engine, and a control means (18) lowering the absorbed torques of the variable displacement hydraulic pumps (7, 8, 9) when the detected rotational speed of the engine is lowered to a specified threshold or below.
Inventors:
IWAMOTO YUUICHI (JP)
Application Number:
PCT/JP2005/016237
Publication Date:
March 16, 2006
Filing Date:
September 05, 2005
Export Citation:
Assignee:
KOMATSU MFG CO LTD (JP)
IWAMOTO YUUICHI (JP)
IWAMOTO YUUICHI (JP)
International Classes:
F04B49/06
Foreign References:
| JPS56159580A | 1981-12-08 | |||
| JPH06221301A | 1994-08-09 |
Attorney, Agent or Firm:
Kimura, Takahisa (8-11 Minato 1-chom, Chuo-ku Tokyo 43, JP)
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