发明申请
US20080142292A1 Electrohydraulic Vehicle Steering System with a Linear Pressure Characteristics
审中-公开
具有线性压力特性的电动液压车辆转向系统
- 专利标题: Electrohydraulic Vehicle Steering System with a Linear Pressure Characteristics
- 专利标题(中): 具有线性压力特性的电动液压车辆转向系统
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申请号: US11884156申请日: 2006-02-15
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公开(公告)号: US20080142292A1公开(公告)日: 2008-06-19
- 发明人: Ronald Bayer , Johann Jungbecker , Steffen Linkenbach , Norman Muth , Xiuxun Yin
- 申请人: Ronald Bayer , Johann Jungbecker , Steffen Linkenbach , Norman Muth , Xiuxun Yin
- 优先权: DE102005006967.3 20050216; DE102006722.3 20060213
- 国际申请: PCT/EP06/50943 WO 20060215
- 主分类号: B62D5/08
- IPC分类号: B62D5/08
摘要:
A vehicle steering system for motor vehicles includes a steering handle, which is connected to steerable vehicle wheels in terms of effect in order to predefine a driving direction, as well as a hydraulic working cylinder including two cylinder chambers. Further, a hydraulic pressure source is provided, which applies hydraulic pressure to a steering valve designed as a slide valve. The steering valve controls the magnitude of the hydraulic pressure that is conveyed to the cylinder chambers of the working cylinder, and a differential pressure determines the effective direction and the magnitude of the steering aid. The steering valve is a slide valve and includes a control assembly comprising a control sleeve and a control slide. The control sleeve has at least one control window, and the differential pressure in a non-linear relationship depends on the free cross-sectional surface of the control window, which is variable due to displacement of the control slide. The edge of the control window is so configured that the free cross-sectional surface of the control window changes in such a fashion that the magnitude of the differential pressure depends substantially linearly on the displacement of the control slide.