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Propulsion of a steering control and several vehicle accessories by a hydrostatic transmission

机译：静液压传动装置推动转向控制系统和若干车辆附件

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摘要

1373902 Hydraulic power steering etc. ROBERT BOSCH GmbH 26 Jan 1973 [25 Feb 1972] 4095/73 Heading B7H An hydraulic system for actuating a power steering unit and an air conditioning unit of a vehicle includes at least one engine driven pump which supplies pressure fluid to the power steering cylinder 10 and to a hydrostatic motor 19 which operates the compressor (not shown); of the air conditioning unit. In a first embodiment (Fig. 1) a pump 1 driven by engine 2 has two outlet ports 3, 4. Port 3 supplies the power steering cylinder 10 via line 6 and three-way steering valve 7 and port 4 supplies the motor 19 which drives the air conditioning compressor. Pressure relief valves 13, 20, valve 7 and motor 19 are all connected to a common return line 14. The pump 1 is of the variable type and the output at port 4 is controlled by control element 5 which is actuated by flow regulating valve 24 so that the motor 19 operates at constant rotational speed. Motor 19 can be stopped by opening a by-pass valve 23. In a second embodiment (Fig. 2), a single variable pump 28 supplies pressure fluid to a three-way steering valve 30. In the neutral steering position II as shown valve 30 supplies fluid to motor 19. In the operative steering positions I and III valve 30 supplies fluid to cylinder 10, and a flow regulating valve 38 and by-pass line 39 supplies the motor 19. Again a flow regulating valve 34 actuates pump control elements 37 so that motor 19 operates at a constant rotational speed. In a third embodiment (not shown), the output of the pump 28 is controlled by a control valve connected to the three-way valve. The control valve has a slide which is biased on one side by the delivery pressure of the pump and on the other side by a spring and a pressure which is lower than the delivery pressure by the amount of pressure drop across at least one throttle disposed in the three-way valve. In other embodiments (not shown), two variable pumps are provided. The steering cylinder 10 and motor 19 may be supplied by separate pumps or may be supplied together by the combined output of the two pumps. Again flow regulating arrangements are provided to vary the outputs of one and/or both pumps so that motor 19 operates at constant rotational speed and so that cylinder 10 has an adequate supply of pressure fluid when required.

机译：1373902液压助力转向装置等。ROBERT BOSCH GmbH 1973年1月26日[1972年2月25日]标题B7H一种用于致动车辆的动力转向装置和空调装置的液压系统，包括至少一个由发动机驱动的泵，用于供应压力流体。动力转向缸10和操作压缩机（未示出）的静液压马达19;空调单元的在第一实施例（图1）中，由发动机2驱动的泵1具有两个出口端口3、4。端口3通过管线6和三通转向阀7为动力转向缸10提供动力，而端口4为电动机19提供动力。驱动空调压缩机。卸压阀13、20，阀7和电动机19均连接到公共回流管路14。泵1为可变类型，端口4的输出由控制元件5控制，控制元件5由流量调节阀24驱动电动机19以恒定的转速运转。可以通过打开旁通阀23来停止电动机19。在第二个实施例（图2）中，单个可变泵28将压力流体供应给三通转向阀30。在所示的空档转向位置II 30向马达19供应流体。在工作转向位置I和III，阀30向气缸10供应流体，流量调节阀38和旁通管路39向马达19供应。流量调节阀34再次致动泵控制元件。在图37中，电动机19以恒定的转速运转。在第三实施例（未示出）中，泵28的输出由连接到三通阀的控制阀控制。控制阀具有滑动件，该滑动件的一侧被泵的输送压力偏压，而另一侧被弹簧偏压，该压力比输送压力低至少一个通过设置在其中的节流阀的压降量。三通阀。在其他实施例中（未示出），提供了两个可变泵。转向缸10和电动机19可以由分开的泵供应，或者可以由两个泵的组合输出一起供应。再次提供流量调节装置，以改变一个和/或两个泵的输出，以使电动机19以恒定的转速运行，并在需要时使气缸10有足够的压力流体供应。

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公开/公告号DE2208842C2

专利类型
公开/公告日1983-09-01

原文格式PDF
申请/专利权人 ROBERT BOSCH GMBH 7000 STUTTGART DE;
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申请/专利号DE19722208842
发明设计人 BUSSE HERBERT;DWORAK WILHELM;FRICKE HANS-JUERGEN DR.-ING. 7000 STUTTGART DE;BRODBECK PETER 7141 SCHWIEBERDINGEN DE;KOBALD WALTER 7000 STUTTGART-FEUERBACH DE;
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申请日1972-02-25
分类号B60H3/04;B62D5/06;
国家 DE
入库时间 2022-08-22 10:13:20

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