Patent ID: 11873812
Assignee: SCHWäBISCHE HüTTENWERKE AUTOMOTIVE GMBH
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F | IPC F

Claim 14:
15. A rotary pump having an adjustable delivery volume, the rotary pump comprising:
(a) a pump housing having a low-pressure inlet and a high-pressure outlet for a fluid to be delivered; and
(b) a delivery rotor arranged such that it is rotatable about a rotational axis in the pump housing and comprising multiple delivery means which are distributed over a circumference of the delivery rotor for delivering the fluid from the low-pressure inlet to the high-pressure outlet; and
(c) a setting element which is adapted to be translationally moved back and forth in relation to the pump housing for adjusting the delivery volume of the rotary pump, wherein
(d) an inlet end of the setting element comprises:
(d1) a first circumferential portion which extends circumferentially in a rotational direction of the delivery rotor and an axial width of which is smaller than an axial width of the delivery means and
(d2) a second circumferential portion which adjoins the first circumferential portion in the rotational direction of the delivery rotor and an axial width of which is greater than the axial width of the first circumferential portion, wherein

(e) a transition, in the rotational direction of the delivery rotor, from the first circumferential portion to the second circumferential portion is arranged in the low-pressure inlet in each position of the setting element,, wherein the first circumferential portion is formed by a radially continuous, axial recess in the setting element, and, wherein the axial recess comprises a recess base which is delineated in the circumferential direction by two opposing recess walls, and one of the recess walls forms the transition.