发明名称 |
System and method for selective catalytic reduction control |
摘要 |
<p>A selective catalytic reduction (SCR) catalyst control system and method for an engine is disclosed. Urea injection to an SCR catalyst is determined based on an SCR catalyst model, which determines a value of stored NH 3 in the SCR catalyst based on the NO x engine emission value, the SCR catalyst temperature, the quantity of urea supplied to the SCR catalyst and a pre-determined efficiency of conversion of NO x gases. A target value of stored NH 3 and the value of stored NH 3 in the SCR catalyst is then used to determine a stored NH 3 differential, which is then used to calculate urea injection.</p> |
申请公布号 |
EP2025388(A1) |
申请公布日期 |
2009.02.18 |
申请号 |
EP20070253090 |
申请日期 |
2007.07.31 |
申请人 |
DELPHI TECHNOLOGIES, INC. |
发明人 |
PARMENTIER, MICHAEL;SCHMITT, JULIEN |
分类号 |
B01D53/90;B01D53/94;F01N3/20;F01N9/00;F01N11/00 |
主分类号 |
B01D53/90 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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