| 摘要 |
1,168,714. Power steering. ZAHNRADFABRIK FRIEDRICHSHAFEN A.G. 10 May, 1967 [11 Nov., 1966], No. 21661/67. Heading B7H. In a motor vehicle, motor driven pump 1 supplies oil to a flow divider valve 3 disposed in housing 6 of an hydraulic steering system 7, the flow being preferentially supplied to the steering but also, above a certain pressure, to an hydraulic lifting system 10 via a three-way valve 9, and there being also accommodated in housing 6 a relief valve 11 for the steering system. Flow dividing valve 3 comprises a member 33 axially slidable against a spring 32 such that above the said certain pressure the oil is supplied to line 4. In the neutral position of the steering valve member 8 oil flows from passage 5 to line 13 and reservoir 16 via ring groove 21, passage 20 and relief valve 11. If member 8 moves to the left a pressure chamber of the system is pressurized through line 22 and line 18 of the other pressure chamber is connected to line 13. If member 8 moves to the right the connections are opposite. A safety valve 12 by-passes valve 9. |
