发明名称 |
Gasoline particulate filter regeneration and diagnostics |
摘要 |
A method for operating a spark-ignition engine having a three-way catalyst and a particulate filter downstream thereof, comprising: oscillating an exhaust air-fuel ratio entering the particulate filter to generate air-fuel ratio oscillations downstream of the particulate filter, while increasing exhaust temperature; when the downstream oscillations are sufficiently dissipated, enleaning the exhaust air-fuel ratio entering the particulate filter; and reducing the enleanment when an exhaust operating parameter is beyond a threshold amount. |
申请公布号 |
US8683786(B2) |
申请公布日期 |
2014.04.01 |
申请号 |
US201213615278 |
申请日期 |
2012.09.13 |
申请人 |
RUONA WILLIAM CHARLES;VAN NIEUWSTADT MICHIEL J.;FORD GLOBAL TECHNOLOGIES, LLC |
发明人 |
RUONA WILLIAM CHARLES;VAN NIEUWSTADT MICHIEL J. |
分类号 |
F01N3/00 |
主分类号 |
F01N3/00 |
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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