| 摘要 |
A pump having a stroke ring which has an axial recess, a rotor which is received in the axial recess so as to be rotatable relative to the stroke ring, wherein the rotor has radial recesses in which delivery elements are displaceable received as viewed in a radial direction, a side plate which closes off the axial recess on a first side, a pressure plate which closes off the axial recess on a second side, wherein the pressure plate has at least one opening, wherein a pressure region of the pump is fluidically connected to external surroundings of the pressure plate through the at least one opening, and wherein at least one fluid path is provided from the pressure region of the pup into an under-vane region of the delivery elements, and a cold-start plate which is preloaded against the pressure plate by means of a spring element such that, at least when the pump is at a stand-still, the cold-start plate closes the at least one opening in the pressure plate to the external surroundings of the pressure plate. The pump is characterized in that the spring element is supported on the pressure plate so as to introduce preload forces into the cold-start plate, and in that the spring element is fastened to the pressure plate. |
| 主权项 |
1. A pump comprising:
a cam ring which has an axial aperture, a rotor, which is received in the axial aperture so as to be rotatable relative to the cam ring, wherein the rotor has radial recesses, in which delivery elements are displaceably received as viewed in a radial direction, a side plate which closes off the axial aperture on a first side, a pressure plate, which closes off the axial aperture on a second side, wherein the pressure plate has at least one opening, wherein a pressure region of the pump is fluidically connected to external surroundings of the pressure plate through the at least one opening, and wherein at least one fluid path is provided from the pressure region of the pump into an under-vane region of the delivery elements, and a cold-start plate, which is preloaded against the pressure plate by means of a spring element in such a way that, at least when the pump is stationary, said cold-start plate closes the at least one opening in the pressure plate to the external surroundings of said pressure plate, wherein the spring element being supported on the pressure plate so as to introduce preloading forces into the cold-start plate, and wherein the spring element being secured on the pressure plate. |
