发明名称 |
EXHAUST SYSTEM FOR A SPARK-IGNITED INTERNAL COMBUSTION ENGINE |
摘要 |
<p>An exhaust system for a spark-ignited internal combustion engine comprises a three-way catalyst composition including an oxygen storage component, which TWC composition is coated on a flow-through monolith substrate, which substrate comprising a plurality of channels, each channel having a length extending from an inlet end to an outlet end and a single lambda sensor, wherein the substrate comprises a portion of the plurality of channels wherein the TWC composition in at least a part of the length of channels extending from the inlet end has a reduced oxygen storage activity, or no oxygen storage activity, relative to the TWC composition in a remainder of the substrate, the arrangement being such that the single lambda sensor is contacted substantially only with exhaust gas that has first contacted the TWC composition having a reduced oxygen storage activity or no oxygen storage activity.</p> |
申请公布号 |
EP1989412(B1) |
申请公布日期 |
2011.02.02 |
申请号 |
EP20070712970 |
申请日期 |
2007.02.27 |
申请人 |
JOHNSON MATTHEY PUBLIC LIMITED COMPANY |
发明人 |
ARNOLD, LOUISE CLARE;CLEMENTS (NEE BROWN), MARIE, CHARLOTTE;COLLINS, NEIL ROBERT;MORRIS, DARRELL |
分类号 |
F01N3/28 |
主分类号 |
F01N3/28 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|