| 摘要 |
PCT No. PCT/EP91/02085 Sec. 371 Date Jul. 6, 1992 Sec. 102(e) Date Jul. 6, 1992 PCT Filed Nov. 5, 1991 PCT Pub. No. WO92/08051 PCT Pub. Date May 14, 1992.A suction-restricted radial piston pump is described, in particular for use with automotive vehicles. The pump delivers a flow constant over a broad speed range and involving low losses in output and generating only negligible noise. In one embodiment, a control slot (13), on the pressure side, is subdivided into several grooves (27,28) which at least in part are in communication, through check valves (32), with the pressure connection (20). An alternative embodiment provides a shape of the pressure-sided control slot in which the introducing end thereof is comparatively narrow to reduce noise at a high speed and the outlet-sided end thereof with a wider width sufficient to meet the required output. According to a third embodiment, the suction-sided slot (12) is provided with a narrow width section and a subsequent wider width section.
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