Method for the operation of an emission control system located in an exhaust gas zone of an internal combustion engine

Abstract

Disclosed is a method for operating an emission control system that is located in an exhaust gas zone of an internal combustion engine and comprises a catalytic layer causing an oxidation reaction as well as a particle filter in which at least one exhaust gas component is deposited when the internal combustion engine is operated and which is regenerated from said exhaust gas component in predefined operating phases. According to the inventive method, the air throughput through at least one combustion chamber of the internal combustion engine is reduced in the predefined operating phases in which the particle filter is regenerated.

1 - 10 . (canceled) 
   
   
       11 . A method of operating an emission control system located in an exhaust gas zone of an internal combustion engine, the emission control system comprising a catalytic layer causing an oxidation reaction and a particle filter, the method comprising:
 depositing at least one exhaust gas component in the particle filter when the internal combustion engine is operated; and   regenerating the particle filter from said exhaust gas component in a predefined operating phase, wherein an air throughput is reduced through at least one combustion chamber of the internal combustion chamber in the predefined operating phase.   
   
   
       12 . A method according to  claim 11 , further comprising continuously reducing the air throughput in the predefined operating phase. 
   
   
       13 . A method according to  claim 12 , wherein the predefined operating phase is a partial load region of the internal combustion engine. 
   
   
       14 . A method according to  claim 11 , further comprising reducing the air throughput through the at least the one combustion chamber via an advanced closing of at least one intake valve of the at least one combustion chamber. 
   
   
       15 . A method according to  claims 14 , further comprising reducing the air throughput through the at least the one combustion chamber via an advanced closing of at least one intake valve using residual gas compression. 
   
   
       16 . A method according to  claim 11 , further comprising reducing the air throughput through the at least one combustion chamber via actuation of a throttle valve located in an engine air intake. 
   
   
       17 . A method according to  claim 11 , further comprising;
 positioning an oxidation catalytic converter that functions as the catalytic layer after the at least one combustion chamber; and   subsequently attaching a diesel particle filter that functions as the particle filter to said oxidation catalytic converter.   
   
   
       18 . A method according to  claim 11 , further comprising positioning a layered particle filter, particularly a catalytic soot filter, that functions as the catalytic layer after the at least one combustion chamber. 
   
   
       19 . A computer program to implement, if the computer program is executed on an arithmetic unit, a method of operating an emission control system located in an exhaust gas zone of an internal combustion engine, the emission control system comprising a catalytic layer causing an oxidation reaction and a particle filter, the method comprising: depositing at least one exhaust gas component in the particle filter when the internal combustion engine is operated; and regenerating the particle filter from said exhaust gas component in a predefined operating phase, wherein an air throughput is reduced through at least one combustion chamber of the internal combustion chamber in the predefined operating phase. 
   
   
       20 . A computer program product with a program code stored on a machine-readable carrier to implement, if executed on a computer or in a control unit, a method of operating an emission control system located in an exhaust gas zone of an internal combustion engine, the emission control system comprising a catalytic layer causing an oxidation reaction and a particle filter, the method comprising: depositing at least one exhaust gas component in the particle filter when the internal combustion engine is operated; and regenerating the particle filter from said exhaust gas component in a predefined operating phase, wherein an air throughput is reduced through at least one combustion chamber of the internal combustion chamber in the predefined operating phase.