Hydraulically activated exhaust flap

Abstract

A flap arrangement in an exhaust track of a motor vehicle includes an exhaust flap and a slave cylinder for controlling an operative position of the exhaust flap. The slave cylinder is fluidly connected to a master cylinder by a hydraulic line containing a hydraulic fluid in the form of liquid metal. The movement of the master cylinder is thus transmitted via the liquid metal to the slave cylinder. A mechanical coupling of the slave cylinder with the exhaust flap moves the exhaust flap to a respective operative position.

1 . A flap arrangement in an exhaust track of a motor vehicle, comprising:
 an exhaust flap;   a slave cylinder for controlling an operative position of the exhaust flap; and   a master cylinder fluidly connected to the slave cylinder by a hydraulic line containing a hydraulic fluid in the form of liquid metal.   
     
     
         2 . The flap arrangement of  claim 1 , wherein the exhaust flap is mechanically coupled with the slave cylinder. 
     
     
         3 . The flap arrangement of  claim 1 , further comprising an adjusting actuator coupled with the master cylinder to control operation of the master cylinder. 
     
     
         4 . The flap arrangement of  claim 3 , wherein the adjusting actuator is a linear actuator. 
     
     
         5 . The flap arrangement of  claim 3 , wherein the adjusting actuator is an electromagnetic stroke actuator. 
     
     
         6 . The flap arrangement of  claim 3 , wherein the adjusting actuator is a piezoelectric plug actuator. 
     
     
         7 . The flap arrangement of  claim 1 , wherein the exhaust flap is constructed in the form of a faceplate having a contour conforming to an inner contour of the exhaust track.