| 摘要 |
The present invention is a method for removing pollution from exhaust gas circulating in an exhaust line (12) of an internal-combustion engine, the exhaust line comprises an ammonia-sensitive catalysis means (46) with selective NOx catalytic reduction traversed by the gas and a means (56, 58) for injecting a reductant of the pollutants The decomposes the reductant into a hydrogen gas phase and an ammonia gas phase and, for a gas temperature below approximately 150° C. injects the hydrogen into the exhaust line in combination with a hydrogen-sensitive NOx catalysis means. |
