Patent ID: 7845915

Claim:
A rotary pump for producing a pressure medium flow for a consumer, comprising: a pump housing; a curved ring being inserted in said pump housing; a drive shaft; a rotor that is rotatably borne on the drive shaft being received in said curved ring; displacement elements carried at a circumferential distance to one another on said rotor which, between said rotor and said curved ring, form a first pump chamber having a suction opening and a second pump chamber having a pressure opening; a pressure medium-activated adjusting device for changing an eccentricity of said curved ring relative to said rotor, said pressure medium-activated adjusting device including a first pressure chamber between an exterior of said curved ring and a wall in said pump housing and a second chamber between said exterior of said curved ring and said wall, said second chamber being separated fluidically and circumferentially distanced from said first pressure chamber; a flow control valve operable for controlling the pressure in said first and second pressure chambers; a first control line leading from the pressure opening of the second pump chamber; a metering orifice being disposed in said first control line, said flow control valve including a low pressure chamber which communicates with said first control line on a downstream side of the metering orifice, said first control line, as seen from a rotational direction of the rotor, opening at a beginning of said pressure opening in a primary connector into said pressure opening such that a circumferential pulse of the pressure medium is led to said metering orifice, said primary connector being disposed in a first third of said pressure opening with regard to a circumferential extension of said pressure opening, as seen from the rotational direction of said rotor; and a second control line opening at a secondary connector into said pressure opening such that another circumferential pulse and a radial pulse of the pressure medium is led to a high pressure chamber of said flow control valve.