发明名称 |
METHOD AND SYSTEM FOR PARTICULATE FILTER LEAKAGE DETECTION |
摘要 |
Methods and systems are provided for determining degradation of a particulate filter in an exhaust conduit. In one example, a method may include diverting exhaust gas to a secondary soot sensor assembly comprising a second filter downstream of a first filter, and determining degradation based on time intervals between subsequent filter regenerations of the second filter in the secondary soot sensor assembly. |
申请公布号 |
US2017102311(A1) |
申请公布日期 |
2017.04.13 |
申请号 |
US201615041462 |
申请日期 |
2016.02.11 |
申请人 |
Ford Global Technologies, LLC |
发明人 |
Zhang Xiaogang |
分类号 |
G01N15/06;G01M15/10 |
主分类号 |
G01N15/06 |
代理机构 |
|
代理人 |
|
主权项 |
1. A method, comprising:
flowing exhaust from downstream of a first filter towards each of a first pressure sensor coupled at a first location in an exhaust pipe and a second pressure sensor coupled at a second location in a passage external to the exhaust pipe, the passage including a second filter coupled to an electric circuit; and indicating degradation of the first filter based on an interval between successive regenerations of the second filter. |
地址 |
Dearborn MI US |