For judging the system of exhaust aftertreatment element NOx conversion efficiency

For judging the system of exhaust aftertreatment element NOx conversion efficiency

  • CN 101,512,114 B
  • Filed: 06/20/2007
  • Issued: 08/05/2015
  • Est. Priority Date: 07/11/2006
  • Status: Active Grant
First Claim
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1. be used for the system that the exhaust aftertreatment element nitrogen oxide conversion efficiency be bonded on internal-combustion engine is judged, comprise:

  • For the device judged exhaust aftertreatment element manipulation temperature;

    Include the control circuit of storage, instruction is stored in this storage, these instructions can be performed to judge the endurance of exhaust aftertreatment element manipulation temperature higher than preset temperature by control circuit, and the exhaust aftertreatment element nitrogen oxide conversion efficiency as endurance function is judged, storage also has the multiple model of a model as the exhaust aftertreatment element nitrogen oxide conversion efficiency of endurance function and a generation multiplier, this multiplier is the function of at least one operating parameter being different from exhaust aftertreatment element manipulation temperature, and the instruction that wherein can be performed by control circuit includes and judges according to model the exhaust aftertreatment element nitrogen oxide conversion efficiency initial value as endurance function and nitrogen oxide conversion efficiency initial value and multiplier be multiplied by mutually the instruction judged the nitrogen oxide conversion efficiency of exhaust aftertreatment element.

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