Configuration and method for cleaning an exhaust gas flow of an internal combustion engine by separating particles and motor vehicle having the configuration
AssigneeEmitec Gesellschaft fur Emissionstechnologie mbH
InventorsJAN HODGSON, ROLF Brück
Life of this patent
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Abstract
A configuration for purifying or cleaning an exhaust-gas flow of an internal combustion engine includes at least an ionization device, an agglomeration device, and a (catalytically active) radial honeycomb body around a duct. The exhaust-gas is diverted from the duct into the radial honeycomb body, while the agglomerated particles are caught in a particle separator of the duct. A method for purifying or cleaning an exhaust-gas flow of an internal combustion engine and a motor vehicle including an exhaust system having the configuration, are also provided.
Claims12
A configuration for purifying an exhaust-gas flow of an internal combustion engine, the configuration comprising:
- a) an ionization device for electrically charging particles in the exhaust-gas flow;
- b) an agglomeration device for at least partially agglomerating the electrically charged particles;
- c) a duct including at least a peripheral surface through which fluid can flow, a first end side with an inlet and a second end side with an outlet;
- d) a radial honeycomb body having an inner peripheral surface, an outer peripheral surface and flow channels extending from said inner peripheral surface to said outer peripheral surface, said inner peripheral surface being disposed on said peripheral surface of said duct;
- and
- e) a particle separator configured for at least temporarily retaining the particles from the exhaust-gas flow;
- said ionization device and said agglomeration device being disposed upstream of said inlet or in said duct and said particle separator being disposed downstream of said outlet or in said duct.
A method for purifying an exhaust-gas flow from an internal combustion engine, the method comprising the following steps:
- i) electrically charging particles contained in the exhaust-gas flow;
- ii) agglomerating the charged particles to form larger particles with increased mass inertia;
- iii) deflecting at least 80% by volume of the exhaust-gas flow through an angle of at least 90 degrees;
- iv) separating the larger particles having the increased mass inertia out of the exhaust-gas flow with the step of deflecting the exhaust-gas flow;
- and
- v) depositing the larger particles.
Dependencies are inferred from the claim text.