Title:
建設機械の油圧ポンプのトルク制御装置
Document Type and Number:
Japanese Patent JP4159489
Kind Code:
B2
Abstract:
To always generate optimum hydraulic pump torque automatically.
A fuel condition computing unit 24 determining rank of fuel used in an engine 21 with using a fuel rank distinguishing map 43 and a hydraulic pump torque establishing unit 44 controlling a solenoid control valve 45 for hydraulic pump operation according to fuel rank determined by the fuel condition computing unit 24 are provided. Control of solenoid control valve 45 corresponding to the fuel rank with grasping of the rank of fuel is used in the engine 21 to automatically inducing optimum hydraulic pump torque.
COPYRIGHT: (C)2005,JPO&NCIPI
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Inventors:
Kazutoshi Ozaki
Application Number:
JP2004044686A
Publication Date:
October 01, 2008
Filing Date:
February 20, 2004
Export Citation:
Assignee:
Sumitomo Construction Machinery Manufacturing Co., Ltd.
International Classes:
E02F9/22; F04B49/00; F02D29/00; F02D29/04; F02D45/00
Domestic Patent References:
| JP7286583A |
Attorney, Agent or Firm:
Takakichi Hayashi