Patent ID: 8814497
Filing Date: 2014-08-26
Classification: F01P,F04D

Abstract:
1. Switchable coolant pump having a pump housing ( 1 ), a pulley ( 3 ) mounted in a pulley bearing ( 2 ) on the pump housing ( 1 ), a pump shaft ( 5 ), an impeller ( 6 ) disposed on a free, flow-side end of this pump shaft ( 5 ), so as to rotate with it, a shaft sealing ring ( 8 ) disposed in a seal accommodation ( 7 ), in the pump housing ( 1 ), between the impeller ( 6 ) and a pump bearing ( 4 ), a connection flange ( 9 ) disposed on the pump housing ( 1 ), for a pressure intensifier ( 10 ) having an activation cylinder ( 11 ) and a pressure connection nozzle ( 12 ) disposed on this activation cylinder ( 11 ), an activation piston ( 13 ), a working piston ( 14 ) rigidly connected with the activation piston ( 13 ), and a working cylinder ( 15 ), whereby the working cylinder ( 15 ) is connected with the ring channel ( 19 ) by way of one/multiple pressure line(s) ( 20 ) disposed in the pump housing ( 1 ) and connected with one another, and the working piston ( 14 ) acts on a working medium situated in the working cylinder ( 15 ) as well as in the pressure line(s) ( 20 ) and in the ring channel ( 19 ), wherein separately, the pulley ( wherein a sleeve accommodation ( wherein a ring piston working sleeve ( wherein a ring piston ( wherein an axial bearing ( wherein an end position restriction ( wherein an entrainment cone (