发明申请
- 专利标题： On-demand electro-hydraulic steering system
- 专利标题（中）： 按需电动液压转向系统
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申请号： US12222768申请日： 2008-08-15
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公开(公告)号： US20090014230A1公开(公告)日： 2009-01-15
- 发明人: Rabie E. Khalil , Xiaodong Huang , Michael J. Mientus , John James Krone
- 申请人： Rabie E. Khalil , Xiaodong Huang , Michael J. Mientus , John James Krone
- 专利权人： Caterpillar Inc.
- 当前专利权人： Caterpillar Inc.
- 主分类号： B62D5/04
- IPC分类号： B62D5/04
摘要：
A method of steering a vehicle with a hydraulic steering system is disclosed. A first control signal is sent to a pilot valve. The pilot valve is operated to direct pilot fluid to a main valve in response to the first control signal. The main valve is opened to a first position in response to the pilot fluid. Fluid is directed through the main valve to a first actuator. Resistance to actuation of the first actuator is detected. The detected resistance is compared to a threshold resistance. A second control signal is sent to the pilot valve when the detected resistance exceeds the threshold resistance. The pilot valve is operated to direct pilot fluid to the main valve in response to the second control signal. The main valve is opened to a second position in response to the pilot fluid. Fluid is directed through the main valve to the first actuator and a second actuator.
公开/授权文献
- US07849956B2 On-demand electro-hydraulic steering system 公开/授权日：2010-12-14
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