Abstract: The system for treating exhaust gas comprises an exhaust duct, a catalytic converter arranged in the exhaust duct and an injector for injecting a substance into the system. The system further comprises a bypass duct bypassing a section of the exhaust duct, wherein the bypass duct is arranged such that only part of the catalytic converter is bypassed by the bypass duct.

Abstract: The system for treating exhaust gas comprises an exhaust duct, a catalytic converter arranged in the exhaust duct and an injector for injecting a substance into the system. The system further comprises a bypass duct bypassing a section of the exhaust duct, wherein the bypass duct is arranged such that only part of the catalytic converter is bypassed by the bypass duct.

Abstract: A device for diagnosing a particle filter attached onto a main exhaust line of an internal combustion engine, wherein the diagnosis device includes, downstream from the first particle filter, a detection filter and a sensor for measuring an output parameter of the detection filter. The detection filter is arranged in a secondary exhaust line through which a first portion of the gases from the particle filter passes, wherein a second portion of the gases from the particle filter follows the main exhaust line. The device can be used for diagnosing particle filters for an automobile having a combustion engine.

Abstract: A catalytic converter (110) comprises a converter shell (112), at least one tapered end piece (114) with a flange (116) and thermal shield (122). Said thermal shield (122) extends in an axial direction from said converter shell (122) and said thermal shield (122) surrounds said end piece (114) and said flange (116) on at least a part of the periphery of said converter (110).