Apparatus for reducing the emission of vaporized hydrocarbons in a fuel supply system
AssigneeDaimlerChrysler AG
InventorsRenato Andorf, Thomas Birkhofer, Matthias Bohl, Norbert Markert, Werner Maunz, Ralf Moos, Carsten Plog, Thomas Stengel
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Abstract
An apparatus for reducing the emission of vaporized hydrocarbons in a fuel supply system. The apparatus comprises a filter for binding the hydrocarbons. A catalyst for oxidation of the hydrocarbons to carbon dioxide and water is provided downstream of the filter.
Claims19
An apparatus for reducing emission of vaporized hydrocarbons in a fuel supply system having a fuel tank with a breather line disposed between said fuel tank and ambient atmosphere, said apparatus comprising:
- a filter connected to said breather line, between said fuel tank and ambient atmosphere, for binding hydrocarbons emitted by said system;
- and
- a catalyst installed in said breather line downstream of the filter, for oxidation of hydrocarbons exiting from the filter.
A vehicle powered by at least one internal combustion engine or by fuel cells, and having a fuel supply system including a fuel tank with a breather line disposed between said fuel tank and ambient atmosphere, and apparatus for reducing emission of vaporized hydrocarbons from said fuel supply system, wherein said apparatus comprises:
- a filter connected to said breather line, between said fuel tank and ambient atmosphere, for binding hydrocarbons emitted by said system;
- and
- a catalyst installed in said breather line downstream of the filter, for oxidation of hydrocarbons exiting from the filter.
A process for reducing hydrocarbon emissions from a motor vehicle fuel supply system having a fuel tank with a breather line disposed between said fuel tank and ambient atmosphere, said process comprising:
- storing hydrocarbons in an activated carbon filter connected to said breather line, between said fuel tank and ambient atmosphere;
- and
- oxidizing hydrocarbons which have passed through the activated carbon filter, in the presence of a catalyst which is disposed in said breather line, downstream of said filter.
Dependencies are inferred from the claim text.