exhaust purifier for internal combustion engine and vehicle including such a converter and additive for exhaust purifier

摘要

An exhaust-cleaning device for internal combustion engines having varying exhaust amount, which is intended to constitute a part of an exhaust system co-operating with an engine includes a main converter and a pre-converter located upstream the main converter, seen in the direction that exhaust fumes are intended to pass the exhaust-cleaning device. The exhaust-cleaning device is distinguished by a bypass arranged in the area of the pre-converter. The bypass includes a first opening upstream the pre-converter, and a second opening downstream the pre-converter and upstream the main converter, so that at least a part of the exhaust fumes passes past the pre-converter without passing therethrough. An extension for an exhaust-cleaning device and a vehicle including such an exhaust-cleaning device are disclosed.