发明名称 |
VEHICLE AND A METHOD OF UPDATING EFFICIENCY OF A SELECTIVE CATALYTIC REDUCTION FILTER OF AN EXHAUST TREATMENT SYSTEM OF THE VEHICLE |
摘要 |
A vehicle and a method of updating efficiency of a selective catalytic reduction filter (SCRF) of an exhaust treatment system of the vehicle are disclosed. The method includes obtaining an initial calculated efficiency of the SCRF, via a controller, regarding one of a NOx conversion, a reductant absorption, a reductant desorption and a reductant oxidation. The method also includes determining a soot mass estimate in the SCRF representative of an amount of soot collected inside the SCRF and determining a soot correction factor from the soot mass estimate. The method further includes calculating, via the controller, an updated efficiency value of the SCRF by multiplying the soot correction factor and the initial calculated efficiency to update efficiency of the SCRF. |
申请公布号 |
US2015047328(A1) |
申请公布日期 |
2015.02.19 |
申请号 |
US201313967737 |
申请日期 |
2013.08.15 |
申请人 |
GM Global Technology Operations LLC |
发明人 |
Larose, JR. Thomas;Swoish Christopher C.;Whitt Christopher;Bedford Joshua Clifford |
分类号 |
F01N11/00;F01N3/035 |
主分类号 |
F01N11/00 |
代理机构 |
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代理人 |
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主权项 |
1. A method of updating efficiency of a selective catalytic reduction filter (SCRF) of an exhaust treatment system of a vehicle, the method comprising:
obtaining an initial calculated efficiency of the SCRF, via a controller, regarding one of a NOx conversion, a reductant absorption, a reductant desorption and a reductant oxidation; determining a soot mass estimate in the SCRF representative of an amount of soot collected inside the SCRF; determining a soot correction factor from the soot mass estimate; and calculating, via the controller, an updated efficiency value of the SCRF by multiplying the soot correction factor and the initial calculated efficiency to update efficiency of the SCRF. |
地址 |
Detroit MI US |