发明名称 |
ON-BOARD DIAGNOSTICS SYSTEM |
摘要 |
An on-board diagnostics system for an exhaust system of an internal combustion engine is disclosed. The system comprises one or more ferromagnetic materials and a means for measuring magnetic field strength. Also disclosed is a method for on-board diagnostics of a catalyst component in the exhaust system. The method comprises measuring the magnetic field strength of a ferromagnetic material located in close proximity to the catalyst component and determining whether the ferromagnetic material has been exposed to a temperature above the Curie temperature of the ferromagnetic material, as measured by a decrease in the measured magnetic field strength. |
申请公布号 |
US2014150541(A1) |
申请公布日期 |
2014.06.05 |
申请号 |
US201314073982 |
申请日期 |
2013.11.07 |
申请人 |
Johnson Matthey Public Limited Company |
发明人 |
CHIFFEY Andrew Francis |
分类号 |
F01N11/00 |
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. An on-board diagnostics system for an exhaust system of an internal combustion engine, the system comprising one or more ferromagnetic materials and a means for measuring magnetic field strength.
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地址 |
London GB |