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US 2018/0023439 A1Published application
Exhaust system for a compression ignition engine comprising a water adsorbent material
AssigneeJohnson Matthey Public Limited Company
InventorsGuy Richard CHANDLER, Alexander Nicholas Michael GREEN, Paul Richard PHILLIPS, Andrew WALKER
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Abstract
An exhaust system for a compression ignition engine comprising: a water adsorbent material; and a catalyst composition for treating an exhaust gas pollutant produced by the compression ignition engine; wherein the water adsorbent material is: (i) arranged to contact exhaust gas from the compression ignition engine before the catalyst composition; and (ii) in thermal communication with the catalyst composition.
Claims10
1-20. (canceled)
A diesel engine exhaust system comprising an oxidation catalyst, wherein the oxidation catalyst comprises:
- a water adsorbent material;
- a catalyst composition for treating an exhaust gas pollutant produced by the diesel engine, wherein the catalyst composition comprises a platinum group metal (PGM) and a support material, wherein the platinum group metal (PGM) comprises platinum;
- and
- a substrate;
- wherein the catalyst composition and the water adsorbent material is each disposed on the substrate, wherein a first washcoat layer comprising the water adsorbent material is disposed on a second washcoat layer comprising the catalyst composition such that the water adsorbent material is arranged to contact exhaust gas from the diesel engine before the catalyst composition.
2 more elements
Dependencies are inferred from the claim text.