To enable the contribution to starting and maintenance of a next stage catalyst reaction using the reaction heat of a catalyst set at a preceding stage; reduction of a great deal of total exhaust amount of components to be reacted, which are exhausted during an operating period from a cold start of an engine, as a whole exhaust system; and protection of the catalyst from an abnormally high exhaust gas temperature such as in an overload operation.
The catalyst apparatus for automobile exhaust gas purification is an automobile exhaust gas purifier consisting of a plurality of the catalyst apparatuses for purifying the automobile exhaust gas. There are arranged a first catalyst apparatus which is formed to come in contact with all or a part of the exhaust gas in an engine exhaust manifold, and a second catalyst apparatus which is directly connected to the manifold; and which is formed to come in contact with the exhaust gas only under a constant running state of the engine.
| JP6905929 | Honeycomb structure |
| WO/2007/054740 | REDUCING COKING OVER AG/AL203 HC-SCR CATALYST |
YAGI JUN
Tomoyasu Sakaguchi
Hiroki Naito
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