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    • 5. 发明申请
    • Electrohydraulic Vehicle Steering System with a Linear Pressure Characteristics
    • 具有线性压力特性的电动液压车辆转向系统
    • US20080142292A1
    • 2008-06-19
    • US11884156
    • 2006-02-15
    • Ronald BayerJohann JungbeckerSteffen LinkenbachNorman MuthXiuxun Yin
    • Ronald BayerJohann JungbeckerSteffen LinkenbachNorman MuthXiuxun Yin
    • B62D5/08
    • B62D5/083B62D5/0837B62D5/087
    • 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.
    • 用于机动车辆的车辆转向系统包括转向手柄,该转向手柄在效果上连接到可转向车轮以便预先确定行驶方向,以及包括两个汽缸室的液压工作缸。 此外,提供了液压源,其将液压施加到被设计为滑阀的转向阀。 转向阀控制输送到工作缸的气缸室的液压的大小,并且差压确定转向助力器的有效方向和大小。 转向阀是滑阀,并且包括控制组件,其包括控制套筒和控制滑块。 控制套筒具有至少一个控制窗口,并且非线性关系的压差取决于由于控制滑块的位移而变化的控制窗口的自由横截面。 控制窗口的边缘被配置成使得控制窗口的自由横截面表面以使得压差的大小基本上线性地对应于控制滑块的位移的方式改变。