Exhaust system as well as motor vehicle with an exhaust system

Abstract

An exhaust system for an internal combustion engine of a motor vehicle includes a single exhaust-gas inlet line, two exhaust-gas outlet lines connected in an exhaust gas-conducting manner to the exhaust-gas inlet line, and an active silencing device. The active silencing device is connected in a sound-conducting manner to the two exhaust-gas outlet lines. Furthermore, a motor vehicle with such an exhaust system is provided.

1 . An exhaust system for an internal combustion engine of a motor vehicle comprising:
 a single exhaust-gas inlet line;   two exhaust-gas outlet lines connected in an exhaust gas-conducting manner to the single exhaust-gas inlet line; and   an active silencing device, which is connected in a sound-conducting manner to the two exhaust-gas outlet lines.   
     
     
         2 . The exhaust system according to  claim 1 , wherein the single exhaust-gas inlet line is connected in an exhaust gas-conducting manner to the two exhaust-gas outlet lines via a passive silencer. 
     
     
         3 . The exhaust system according to  claim 2 , wherein sections of the single exhaust-gas inlet line and/or of at least one of the two exhaust-gas outlet lines, run inside a silencer housing of the passive silencer. 
     
     
         4 . The exhaust system according to  claim 1 , wherein the two exhaust-gas outlet lines form a T connection or a Y connection with the single exhaust-gas inlet line or an intermediate exhaust-gas line, wherein the intermediate exhaust-gas line is connected in an exhaust gas-conducting manner to both of the two exhaust-gas outlet lines and to the single exhaust-gas inlet line. 
     
     
         5 . The exhaust system according to  claim 1 , wherein the two exhaust-gas outlet lines are formed by opposite sections of a common exhaust-gas outlet pipe. 
     
     
         6 . The exhaust system according to  claim 1 , wherein the active silencing device is connected in a sound-conducting manner to the two exhaust-gas outlet lines via a sound coupling-in line, wherein the sound coupling-in line surrounds exhaust-gas inlet-facing ends of the two exhaust-gas outlet lines on an outside and runs substantially concentric to the exhaust-gas inlet-facing ends of the two exhaust-gas outlet lines. 
     
     
         7 . The exhaust system according to  claim 6 , wherein the single exhaust-gas inlet line is connected in an exhaust gas-conducting manner to the two exhaust-gas outlet lines via a passive silencer, and wherein the sound coupling-in line runs at least partly inside a silencer housing of the passive silencer. 
     
     
         8 . The exhaust system according to  claim 6 , wherein the single exhaust gas inlet line passes through a wall of the sound coupling-in line, or
 wherein an intermediate exhaust-gas line is connected in an exhaust gas-conducting manner to both of the two exhaust-gas outlet lines and to the single exhaust-gas inlet line, and wherein the intermediate exhaust-gas line passes through a wall of the sound coupling-in line.   
     
     
         9 . The exhaust system according to  claim 6 , wherein at least one of the two exhaust-gas outlet lines, comprises a perforated section in an area surrounded by the sound coupling-in line. 
     
     
         10 . The exhaust system according to  claim 9 , wherein both of the two exhaust-gas outlet lines comprise perforated sections and the perforated sections are arranged on opposite sides of the single exhaust-gas inlet line, or
 wherein an intermediate exhaust-gas line is connected in an exhaust gas-conducting manner to both of the two exhaust-gas outlet lines and to the single exhaust-gas inlet line, and wherein both of the two exhaust-gas outlet lines comprise perforated sections and the perforated sections are arranged on opposite sides of the intermediate exhaust-gas line.   
     
     
         11 . The exhaust system according to  claim 6 , wherein the active silencing device is connected in a sound-conducting manner to the sound coupling-in line via a sound line. 
     
     
         12 . The exhaust system according to  claim 11 , wherein the single exhaust-gas inlet line is connected in an exhaust gas-conducting manner to the two exhaust-gas outlet lines via a passive silencer, and wherein the sound line runs outside a silencer housing of the passive silencer. 
     
     
         13 . The exhaust system according to  claim 1 , wherein the two exhaust-gas outlet lines are exhaust tail pipes. 
     
     
         14 . The exhaust system according to  claim 1 , wherein the singe exhaust-gas inlet line has a substantially oval cross section at an exhaust-gas outlet-facing end. 
     
     
         15 . A motor vehicle including the exhaust system according to  claim 1 . 
     
     
         16 . The exhaust system according to  claim 2 , wherein sections of the single exhaust-gas inlet line, and/or both of the two exhaust-gas outlet lines, run inside a silencer housing of the passive silencer.