Abstract: An exhaust-gas aftertreatment system for an internal combustion engine of a vehicle includes at least one exhaust line, at least one turbocharger and at least one exhaust-gas converter. The at least one exhaust-gas converter is provided between the internal combustion engine and the at least one turbocharger and has a first volume of at least 0.6 liters. A method for purifying exhaust gas and a vehicle having the system, are also provided.
Type:
Application
Filed:
January 13, 2010
Publication date:
June 24, 2010
Applicants:
EMITEC GESELLSCHAFT FOR EMISSIONSTECHNOLOGIE MBH, BORG WARNER INC.
Abstract: A device for treating exhaust gas of an internal combustion engine includes a reducing agent solution evaporator, a hydrolysis catalytic converter connected thereto for hydrolysis of urea to form ammonia and an SCR catalytic converter for selective catalytic reduction of nitrogen oxides. The evaporator includes an evaporator unit providing a gaseous substance mixture including at least one reducing agent precursor and/or reducing agent. The evaporator unit evaporates an aqueous solution including at least one reducing agent precursor. The SCR catalytic converter is in an exhaust line, and the evaporator and the hydrolysis catalytic converter are outside of and can be connected to the exhaust line. A sufficiently large quantity of reducing agent for selective catalytic reduction of nitrogen oxides in the SCR catalytic converter can be provided, while permitting a smaller volume of the hydrolysis catalytic converter than in the prior art, since it is not traversed by exhaust gas.
Type:
Application
Filed:
November 17, 2008
Publication date:
April 30, 2009
Applicant:
EMITEC GESELLSCHAFT FOR EMISSIONSTECHNOLOGIE MBH
Inventors:
Rolf Bruck, Marc Brugger, Thomas Harig, Peter Hirth, Ulf Klein