System and method for controlling reducing agent injection in selective catalytic reduction system

System and method for controlling reducing agent injection in selective catalytic reduction system

  • CN 101,994,554 A
  • Filed: 08/20/2010
  • Published: 03/30/2011
  • Est. Priority Date: 08/20/2009
  • Status: Active Application
First Claim
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1. engine control system comprises:

  • The dispensing control module, described dispensing control module the temperature waste gas produced by motor higher than predetermined temperature threshold during in, activate sparger the injection of reducing agent of first amount injected in the waste gas;

    AndThe side-play amount determination module, described side-play amount determination module is based on interior NO during described XMeasured quantity and the expection NO XAmount is determined the efficient of selective catalytic reduction material, Wherein, described NO XMeasured quantity be to record in the upstream and downstream position of selective catalytic reduction material, and wherein, described expection NO XAmount is based on the temperature of waste gas and described first amount of reducing agent.

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