Patent ID: 7305826
Filing Date: 2007-12-11
Classification: F01D,F02B,F04D,F05D

Abstract:
1. An adjustable nozzle vane of a turbocharger comprising: a first chamber oriented adjacent to a first axial surface on the nozzle vane, the first axial surface oriented adjacent to a unison ring configured to actuate the nozzle vane; a second chamber oriented adjacent to a second axial surface, the second axial surface oriented opposite the first axial surface; a first passage between the first and second chambers wherein the first passage enables gas flow between the first and second chambers and at least partially equalizes pressures between the first and second chambers; and a second passage between the first chamber and an area outside the adjustable nozzle vane wherein the second passage enables gas flow from the area into the first chamber and wherein pressure from the gas flow into the first chambers generates a force acting on the adjustable nozzle vane.