发明名称 |
Transient compensation control of an SCR aftertreatment system |
摘要 |
A system includes an internal combustion engine, an exhaust conduit fluidly coupled to the internal combustion engine and an SCR catalyst, and a reductant doser operationally coupled to the exhaust conduit at a position upstream of the SCR catalyst. The reductant doser is responsive to a reductant doser command. The system includes a controller having a number of modules functionally structured to execute operations to compensate for transient operation of the system. An NH3 target module interprets a reductant amount target that is a target amount of reductant in the exhaust conduit at a position upstream of the SCR catalyst. A transient adjustment module detects a transient event in the SCR catalyst and provides an adjusted reductant amount target in response to the transient event and the reductant amount target. A dosing control module provides the reductant doser command in response to the adjusted reductant amount target. |
申请公布号 |
US8640448(B2) |
申请公布日期 |
2014.02.04 |
申请号 |
US201113093363 |
申请日期 |
2011.04.25 |
申请人 |
GEVECI MERT;OSBURN ANDREW W.;CUMMINS INC. |
发明人 |
GEVECI MERT;OSBURN ANDREW W. |
分类号 |
F01N3/10 |
主分类号 |
F01N3/10 |
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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