CONDOTTO DEI GAS DI SCARICO PER UN IMPIANTO DI SCARICO DI GAS PROVVISTO DI CATALIZZATORE PER AUTOVEICOLI

摘要

An exhaust line for an exhaust system of an internal combustion engine having a catalytic converter, the exhaust line being located upstream of the catalytic converter with respect to the flow direction of exhaust. The exhaust line has an externally applied heat-conducting layer preferably made of a metallic material and an internally disposed insulating layer made of a heat-insulating material. The insulating layer and the heat-conducting layer are connected directly and forcewise with one another. The layer thickness of the insulating layer is less than 2 mm, the specific heat capacity c of the insulating layer is less than 106 J/(m3h), and the heat diffusivity kappa of the insulating layer is less than 0.01 cm2/s.