Internal combustion engine

Abstract

An internal combustion engine is provided, on an intake side of which intake manifold pipes are provided and on an exhaust side, exhaust manifold pipes. The intake manifold pipes and the exhaust manifold pipes are connected gas-tight via an acoustically permeable membrane.

1 . An internal combustion engine comprising: 
 an engine block having at least one cylinder;    intake manifold pipes being provided on an intake side of the cylinder, the intake manifold pipes branching off from an intake line, and over the intake line a fuel-air mixture is supplied;    exhaust manifold pipes being provided on an exhaust side of the cylinder, the exhaust manifold pipes opening into an exhaust gas collection line, and over the exhaust line combustion gases are removed towards a muffler and/or tailpipe; and    wherein the intake line and the exhaust line are connected together together in an acoustically permeable and gas-tight manner    
     
     
         2 . The internal combustion engine according to  claim 1 , wherein the intake line and the exhaust lines are connected together gas-tight by an elastic partition or membrane.  
     
     
         3 . The internal combustion engine according to  claim 1 , wherein, to the intake and exhaust lines on a side of the engine block, extension pipes are respectively connected, free ends of which are connected together by a partition or membrane.  
     
     
         4 . The internal combustion engine according to  claim 3 , wherein the extension pipes are welded together with the partition or membrane.  
     
     
         5 . An exhaust system comprising: 
 an intake leg configured to provide at least one cylinder of an internal combustion engine with a fuel-air mixture;    an exhaust leg configured to direct exhaust gases from the at least one cylinder towards an exit area of the exhaust system; and    a connecting member provided between a connection of the intake leg and the exhaust leg for facilitating sound waves from the intake leg to pass through towards the exhaust leg, and for preventing the exhaust gases from the exhaust leg to pass through towards the intake leg.    
     
     
         6 . The exhaust system according to  claim 5 , wherein the connecting member is an elastic membrane.  
     
     
         7 . The exhaust system according to  claim 6 , wherein an amount of sound waves that pass from the intake leg to the exhaust leg is based on an elasticity of the elastic membrane.  
     
     
         8 . The exhaust system according to  claim 5 , wherein the sound waves from the intake leg alter perceived acoustics of the exhaust system.  
     
     
         9 . The exhaust system according to  claim 5 , wherein the connecting member is only permeable to sound waves.