Pollutant gas e.g. nitrogen oxide, treating system for vehicle, has fuel injector injecting fuel directly on downstream side of catalytic device and situated in outlet of device, where side is deprived of inactive catalytic material

摘要

The system has a particle filter (3) filtering pollutant soot e.g. particle, emitted by an engine (4). A fuel injector (22) regenerates the filter and injects fuel in an exhaust line in an upstream of the filter (3) to increase temperature and to permit combustion of the particle. Two catalytic devices (1, 2) catalyzes oxidation of reducers emitted by the engine. The injector situated in an outlet of the device injects fuel directly on a downstream side (11) of the device (1), where the side is deprived of an inactive catalytic material.