Device for catalytic cleaning of exhaust gases from IC engine - comprises first catalyser placed downstream of engine, an HC trap, and second catalyser arranged in connection with HC trap

摘要

The distance (x) between the first catalyser (4) and the HC trap (7) is chosen so that the time taken from the start of the engine (1) to the point where desorption occurs in the HC trap (7) is greater than or equal to the time taken from the start of the engine until the first catalyser (4) achieves its normal work temp.