发明授权
- 专利标题： Control system for hydraulic pumps of a civil machine
- 专利标题（中）： 民用机械液压泵控制系统
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申请号： US467961申请日： 1983-02-18
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公开(公告)号： US4507057A公开(公告)日： 1985-03-26
- 发明人: Michiaki Igarashi , Takayasu Inui , Kazuo Otsuka , Saburo Nogami , Satoru Nishimura
- 申请人： Michiaki Igarashi , Takayasu Inui , Kazuo Otsuka , Saburo Nogami , Satoru Nishimura
- 申请人地址： JPX Tokyo
- 专利权人： Kabushiki Kaisha Komatsu Seisakusho
- 当前专利权人： Kabushiki Kaisha Komatsu Seisakusho
- 当前专利权人地址： JPX Tokyo
- 优先权： JPX55-449 19800107
- 主分类号： E02F9/22
- IPC分类号： E02F9/22 ; E02F9/20 ; F04B49/00 ; F04B49/06 ; F15B11/00
摘要：
A civil machine having a flow-rate controller which applies a preset signal instead of a normal flow-rate signal to a variable type hydraulic pump when delivery pressure of the hydraulic pump exceeds a preset pressure value. The normal flow-rate signal corresponds to the position of an operating lever. The preset signal has a value of minimum flow rate to hold a working tool in a certain posture. With this control system, pressure loss and temperature rise in hydraulic operating oil as well as fuel consumption of the machine can be reduced and cycle time of the work can be improved.
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