Method for Reducing Emissions in a Motor Vehicle by Controlling the Generator Output

Abstract

A method for influencing exhaust-gas characteristics of a motor vehicle having a combustion engine in which the exhaust-gas composition and/or the exhaust-gas temperature are/is influenced with the aid of an emission management system that includes a control device having an emission management algorithm and at least one control element. The exhaust-gas values are able to be optimized, and the fuel consumption lowered if the generator output is increased or lowered by the emission management system within the framework of an emission management measure.

1 - 8 . (canceled) 
   
   
       9 . A method for influencing exhaust-gas characteristics of a motor vehicle having a combustion engine, the method comprising:
 influencing at least one of an exhaust-gas composition and an exhaust-gas temperature by a specified control of control elements with the aid of an emission management system that includes a control device having an emission management algorithm and at least one control element; and   one of increasing and decreasing a generator output within the framework of an emission management measure.   
   
   
       10 . The method as recited in  claim 9 ,
 wherein the emission management algorithm increases the generator output in a regeneration process for an adsorption catalyst.   
   
   
       11 . The method as recited in  claim 9 ,
 wherein the emission management algorithm increases the generator output in a regeneration process for an exhaust-gas particle filter.   
   
   
       12 . The method as recited in  claim 9 ,
 wherein the emission management algorithm reduces the generator output in an acceleration phase of the vehicle and thereby enables a higher exhaust-gas recirculation rate.   
   
   
       13 . The method as recited in  claim 9 ,
 wherein the emission management algorithm increases the generator output in a cold-start phase or in phases having a low exhaust-gas temperature in order to raise the exhaust-gas temperature or to shorten a warm-up phase of the engine.   
   
   
       14 . A device for influencing exhaust-gas characteristics of a vehicle having a combustion engine, comprising:
 a control device having an emission management algorithm;   at least one control element connected to the control device, with whose aid at least one of an exhaust-gas composition and an exhaust-gas temperature is able to be influenced; and   a generator controller interconnected with the control device, so that a generator output is able to be at least one of increased and decreased within the framework of an emission management.   
   
   
       15 . The device as recited in  claim 14 ,
 further comprising a communication interface situated between the emission management algorithm and an energy management algorithm.   
   
   
       16 . The device as recited in  14 ,
 further comprising a big-synchronous interface for providing a connection between the control device and the generator controller.