Johnson Matthey Public Limited Company

Johnson Matthey Inc.

Neil Robert Collins

Paul Richard Phillips

Andrew Francis Chiffey

Guy Richard Chandler

Raj Rao Rajaram

Francois Moreau

John Benjamin Goodwin

Andrew Peter Walker

Ralf Dotzel

Stuart David Reid

Alexander Nicholas Michael Green

Louise Clare Arnold

Daniel Swallow

Robert James Brisley

Gudmund Smedler

Christopher Gough Morgan

Darrell Morris

Joerg Werner Muench

Michael Anthony Howard

Jörg Werner Münch

David Robert Greenwell

David William Prest

Kaneshalingham Arulraj

Graham Peter Champion

Maire Charlotte Clements

Marie Charlotte Clements

Rodney Foo Kok Shin

Françcois Moreau

Michael Howard

An oxidation catalyst for treating an exhaust gas from a compression ignition engine, which oxidation catalyst comprises: a substrate; a first washcoat region comprising palladium (Pd) and a first support material comprising cerium oxide; and a second washcoat region comprising platinum (Pt) and a second support material.

Oxidation catalyst for a compression ignition engine

An extruded honeycomb catalyst for nitrogen oxide reduction according to the selective catalytic reduction (SCR) method in exhaust gases from motor vehicles includes an extruded active carrier in honeycomb form having a first SCR catalytically active component and with a plurality of channels through which the exhaust gas flows during operation, and a washcoat coating having a second SCR catalytically active component being applied to the extruded body, wherein the first SCR catalytically active component and the second SCR catalytically active component are each independently one of:

Extruded honeycomb catalyst

An exhaust system () for a lean-burn internal combustion engine () comprises a first substrate monolith () comprising a catalyst for oxidizing nitric oxide (NO) comprising a catalytic oxidation component followed downstream by a second substrate monolith () which is a wall-flow filter having inlet channels and outlet channels, wherein the inlet channels comprise a NOabsorber catalyst () and the outlet channels comprise a catalyst for selective catalytic reduction () of nitrogen oxides with nitrogenous reductant.

Exhaust system for a lean burn IC engine

An exhaust system () for a lean-burn internal combustion engine () comprises a first substrate monolith () comprising a catalyst for oxidizing nitric oxide (NO) comprising a catalytic oxidation component followed downstream by a second substrate monolith () which is a wall-flow filter having inlet channels and outlet channels, wherein the inlet channels comprise a NO x absorber catalyst () and the outlet channels comprise a catalyst for selective catalytic reduction () of nitrogen oxides with nitrogenous reductant.

Exhaust system for a lean burn ic engine

Hydrocarbon traps used to trap then release unburned hydrocarbons upon startup of a spark ignition internal combustion engine are sensitive to degradation if exposed to normal temperature exhaust gases. On board diagnostics of HC traps are provided by the invention, by incorporating a heat sensitive oxygen storage material in the HC trap material, and using conventional determination of OSC efficiency to determine if the HC trap material has been exposed to excessive temperature.

Emission control

An exhaust system for a vehicular positive ignition internal combustion engine comprises a filter for filtering particulate matter from exhaust gas emitted from the engine, which filter comprising a porous substrate having inlet and outlet surfaces, wherein the inlet surfaces are separated from the outlet surfaces by a porous structure containing pores of a first mean pore size, wherein the porous substrate is coated with a three-way catalyst washcoat comprising a plurality of solid particles wherein the porous structure of the washcoated porous substrate contains pores of a second mean pore size, which is less than the first mean pore size, and a three-way catalyst washcoat disposed on a separate substrate monolith located upstream of the filter, wherein a mass of three-way catalyst washcoat on the upstream substrate monolith is &#x2266;75% of the total mass of three-way catalyst washcoat in the exhaust system.

Exhaust system for a vehicular positive ignition internal combustion engine

An exhaust system for an internal combustion engine, which system comprises a monolith substrate () coated with a catalyst, which monolith substrate comprising a plurality of substantially parallel channels, each channel having a length extending from an upstream end to a downstream end; and a first sensor disposed in a hole () defined in part by an external wall of the monolith substrate, wherein the monolith substrate comprises a portion () of the plurality of channels wherein the catalyst composition in at least a part of the length of channels extending from the upstream end has an increased activity for a reaction for which the catalyst composition is intended relative to catalyst composition in a remainder () of the monolith substrate, the arrangement being such that the sensor is contacted substantially only with exhaust gas that has first contacted the catalyst composition having an increased activity.

On board diagnostic system

An exhaust system for a spark-ignited internal combustion engine comprises a three-way catalyst composition including an oxygen storage component, which TWC composition is coated on a flow-through monolith substrate, which substrate comprising a plurality of channels, each channel having a length extending from an inlet end to an outlet end and a single lambda sensor, wherein the substrate comprises a portion of the plurality of channels wherein the TWC composition in at least a part of the length of channels extending from the inlet end has a reduced oxygen storage activity, or no oxygen storage activity, relative to the TWC composition in a remainder of the substrate, the arrangement being such that the single lambda sensor is contacted substantially only with exhaust gas that has first contacted the TWC composition having a reduced oxygen storage activity or no oxygen storage activity.

Exhaust system for a spark-ignited internal combustion engine

Growing community of inventors

Royston, United Kingdom

Neil Robert Collins