Device and method for cleansing exhaust gas
AssigneeDaimlerChrysler AG
InventorsAndreas Docter, Andreas Kaupert, Bernd Krutzsch, Arnold Lamm, Bernhard Vogel, Steffen Oliver Wieland
Life of this patent
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Abstract
An exhaust gas purification device in a vehicle, wherein a reforming reactor is provided for extraction of hydrogen from fuel and the hydrogen is supplied to an exhaust gas stream of an internal combustion engine upstream of the exhaust gas catalytic converter, wherein the reforming reactor includes a supply device for oxygen and/or water, wherein the reforming reactor is connected with a side branch of the exhaust gas conduit and wherein oxygen and water for reforming are supplied in the form of an exhaust gas partial stream via the side branch.
Claims17
An exhaust gas purifying device in a vehicle, wherein a reforming reactor (1) is provided for extraction of hydrogen from fuel and wherein the hydrogen is supplied to an exhaust gas stream in an exhaust gas conduit (4) of the internal combustion engine (2) upstream of the exhaust gas catalytic converter (3), wherein the reforming reactor (1) includes a supply device (6) for oxygen and/or water, wherein the reforming reactor (1) is connected with a side branch (5) of the exhaust gas conduit (4), and wherein oxygen and water for reforming are obtained in the form of an exhaust gas partial stream via the side branch (5).
A process for operating an exhaust gas purification device in a vehicle, wherein a reforming reactor (1) is provided for extraction of hydrogen from fuel and wherein the hydrogen is supplied to an exhaust gas stream in an exhaust gas conduit (4) of the internal combustion engine (2) upstream of the exhaust gas catalytic converter (3), wherein the reforming reactor (1) includes a supply device (6) for oxygen and/or water, wherein the reforming reactor (1) is connected with a side branch (5) of the exhaust gas conduit (4), said process comprising:
- supplying a part of the stream of the exhaust gas in the exhaust gas conduit (4) to the reforming reactor (1), and
- carrying out the reformation of the fuel using oxygen and/or water contained in the partial stream of the exhaust gas.
Dependencies are inferred from the claim text.