Patent ID: 6401449
Filing Date: 2002-06-11
Classification: B01F,F01N,Y02C,Y02T

Abstract:
An exhaust system for an internal combustion engine having a compartment housing a catalytic converter for reducing pollutants in the exhaust gases from the engine in the presence of a reducing agent, the exhaust system comprising:an exhaust duct for carrying the exhaust gases from the engine to the catalytic converter compartment, said exhaust duct having an injection location for the introduction of the reducing agent into the exhaust gases; and a first static mixer disposed in said exhaust duct at a location spaced upstream of the catalytic converter compartment and upstream of said injection location and a second static mixer disposed in said exhaust duct at a location spaced upstream of the catalytic converter compartment and downstream of said injection location, each said static mixer comprising an expanded grid in the form of a mesh having a plurality of openings formed between crossbars of said expanded grid.