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(11) | EP 1 188 909 A3 |
| (12) | EUROPEAN PATENT APPLICATION |
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| (54) | Internal combustion engine exhaust device |
| (57) An exhaust device (1) for internal combustion engines (2), having a main catalyst
(3), an auxiliary catalyst (4), and an exhaust manifold (5) connecting the input of
the main catalyst (3) to the exhaust outlets of the internal combustion engine (2),
so as to feed the exhaust gases from the exhaust outlets to the main catalyst (3);
the exhaust manifold (5) assuming a first operating configuration connecting the input
of the main catalyst (3) to the output of the auxiliary catalyst (4), and the input
of the auxiliary catalyst (4) to the internal combustion engine (2), and a second
operating configuration connecting the input of the main catalyst (3) directly to
the internal combustion engine (2) and excluding the auxiliary catalyst (4). |