| abstract |
Combustion engine (M), especially an Otto engine or diesel engine for land and water vehicles, has an exhaust system with an exhaust catalyst ( 20 ), integrated in the exhaust pipe (L), and a catalyst cooling device ( 26 ) fed with a fluid or pasty coolant ( 14 ), preferably water, glycerin or a gel. Also claimed is a silencer, especially for the above combustion engine, having a silencer cooling device fed with a fluid or pasty coolant. Preferably, the cooling device ( 26 ) forms a housing (G) for the catalyst ( 20 ) or silencer, respectively. |