Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
90 words
Catalytic converter (8) for reducing nitrogen oxide in the exhaust gas (30) of an internal combustion engine, in particular a diesel engine, in the presence of a reducing agent (18), having a catalyst carrier (26, 28) and a catalytically active layer (34), wherein the quantity of reducing agent (18), which can be stored per unit of length, increases in the direction of flow of the exhaust gas (30), characterised in that the thickness of the catalytically active layer (34) increases in the direction of flow of the exhaust gas (30).
Claim 2
Dependent Claim
29 words
Catalytic converter according to claim 1, characterised in that the thickness of the catalytically active layer (34) at the gas inlet has substantially the thickness of the reaction zone.
Claim 3
Dependent Claim
33 words
Catalytic converter according to claim 1 or 2, characterised in that the thickness of the catalytically active layer (34) at the gas outlet is a multiple of the thickness of the reaction zone.
Claim 4
Dependent Claim
27 words
Catalytic converter according to one of the claims 1 to 3, characterised in that the catalytically active layer (34) is applied to a metal carrier (26, 28).
Claim 5
Dependent Claim
25 words
Catalytic converter according to one of the claims 1 to 4, characterised in that the catalytically active layer (34) is applied to a ceramic carrier.
Claim 6
Dependent Claim
37 words
Catalytic converter according to one of the claims 1 to 4, characterised in that a fully ceramic honeycomb is provided, the wall thickness of which honeycomb increases in the direction of flow of the exhaust gas (30).
Claim 7
Dependent Claim
65 words
Catalytic converter according to one of the claims 1 to 6, characterised in that arranged in the direction of flow of the exhaust gas (30) in the first instance there is a partial catalytic converter (22) having a metallic carrier (26, 28) and catalytically active layer (34) applied thereto and following this there is a further partial catalytic converter (24) having a fully ceramic honeycomb.
Claim 8
Dependent Claim
26 words
Catalytic converter according to one of the claims 1 to 7, characterised in that means for generating turbulent flows of the exhaust gas (30) are provided.
Claim 9
Dependent Claim
41 words
Catalytic converter according to one of the claims 1 to 8, characterised in that arranged in the direction of flow of the exhaust gas (30) finally there is a partial catalytic converter which is formed as an oxidation catalytic converter (10).
Claim 10
Dependent Claim
39 words
Catalytic converter according to one of the claims 1 to 9, characterised in that the catalytically active layer includes titanium dioxide (TiO₂) and one or more of the additives tungsten oxide (WO₂), molybdenum oxide (MoO) and vanadium oxide (VO).
Claim 11
Dependent Claim
45 words
Catalytic converter according to one of the claims 1 to 10, characterised in that the catalytically active layer includes a phase with the summation formula V x Mo y O 32-z with x + y ≤ 12; x, y ≥ 1 and z ≤ 1.