Johnson Matthey Public Limited Company

Johnson Matthey Inc.

Daniel Hatcher

Paul Richard Phillips

Andrew Francis Chiffey

Francois Moreau

David Bergeal

Raj Rao Rajaram

John Benjamin Goodwin

Agnes Suganya Raj

Cathal Francis Prendergast

Gavin Michael Brown

James Leeland

Christopher Daly

Andrew Izzard

Freyja Woods

Nicholas Dunkley

Agnes Raj

A system comprising (i) a vehicular compression ignition engine comprising one or more engine cylinders and one or more electronically-controlled fuel injectors therefor; (ii) an exhaust line for the engine comprising: a first emissions control device comprising a first honeycomb substrate, which comprises a hydrocarbon adsorbent component; and a second emissions control device comprising an electrically heatable element and a catalysed second honeycomb substrate, which comprises a rhodium-free platinum group metal comprising platinum, wherein the electrically heatable element is disposed upstream from the catalysed second honeycomb substrate and wherein both the electrically heatable element and the catalysed second honeycomb substrate are disposed downstream from the first honeycomb substrate; a third emissions control device, which is a third honeycomb substrate comprising an ammonia-selective catalytic reduction catalyst disposed downstream from the second emissions control device; and one or more temperature sensors located: upstream of the electrically heatable element and/or upstream of the first honeycomb substrate; and between the electrically heatable element and the catalysed second honeycomb substrate; and (iii) an engine control unit comprising a central processing unit pre-programmed, when in use, to control both a heating activation state of the electrically heatable element; an injection timing strategy of the one or more electronically-controlled fuel injector to increase the temperature of at least the first emissions control device following key-on/cold-starting a vehicle comprising the system, wherein the one or more temperature sensors are electrically connected to the engine control unit for feedback control in the system.

System comprising vehicular compression ignition engine and an emissions control device comprising an electrically heatable element

A system () comprising (i) a vehicular compression ignition engine () comprising one or more engine cylinders and one or more electronically-controlled fuel injectors therefor; (ii) an exhaust line () for the engine comprising: a first emissions control device () comprising a first honeycomb substrate, which comprises a hydrocarbon adsorbent component; and a second emissions control device () comprising an electrically heatable element () and a catalysed second honeycomb substrate (), which comprises a rhodium-free platinum group metal (PGM) comprising platinum, wherein the electrically heatable element () is disposed upstream from the catalysed second honeycomb substrate () and wherein both the electrically heatable element () and the catalysed second honeycomb substrate () are disposed downstream from the first honeycomb substrate; a third emissions control device (), which is a third honeycomb substrate comprising an ammonia-selective catalytic reduction catalyst disposed downstream from the second emissions control device (); and one or more temperature sensors located: upstream of the electrically heatable element and/or upstream of the first honeycomb substrate; and between the electrically heatable element () and the catalysed second honeycomb substrate (); and (iii) an engine control unit () comprising a central processing unit pre-programmed, when in use, to control both a heating activation state of the electrically heatable element (); an injection timing strategy of the one or more electronically-controlled fuel injector to increase the temperature of at least the first emissions control device following key-on/cold-starting a vehicle comprising the system, wherein the one or more temperature sensors are electrically connected to the engine control unit for feedback control in the system.

An exhaust system comprising: a NOx storage catalyst; an electric heating element; and a NOx reduction catalyst wherein the heating element is located downstream of the NOx storage catalyst.

In-exhaust electrical element for NOx storage catalyst and SCR systems

A method of preparing a catalyst composition for producing a stable ratio of NOto NO in an exhaust system of a compression ignition engine is described. The method comprises: (i) preparing a first composition comprising a platinum (Pt) compound disposed or supported on a support material; (ii) preparing a second composition by reducing the platinum (Pt) compound to platinum (Pt) with a reducing agent; and (iii) heating the second composition to at least 650&#xb0; C.

Catalyst with stable nitric oxide (NO) oxidation performance

An exhaust system for a compression ignition engine comprising an oxidation catalyst for treating carbon monoxide (CO) and hydrocarbons (HCs) in exhaust gas from the compression ignition engine, wherein the oxidation catalyst comprises: a platinum group metal (PGM) component selected from the group consisting of a platinum (Pt) component, a palladium (Pd) component and a combination thereof; an alkaline earth metal component; a support material comprising a modified alumina incorporating a heteroatom component; and a substrate, wherein the platinum group metal (PGM) component, the alkaline earth metal component and the support material are disposed on the substrate.

Oxidation catalyst for treating the exhaust gas of a compression ignition engine

An oxidation catalyst for treating an exhaust gas produced by a compression ignition engine comprising: a substrate; a catalytic material disposed on the substrate, wherein the catalytic material comprises platinum (Pt); and a region comprising a capture material, wherein the region is arranged to contact the exhaust gas after the exhaust gas has contacted and/or passed through the catalytic material.

Exhaust system for a compression ignition engine having a capture region for volatilised platinum

An oxidation catalyst for treating an exhaust gas from a compression ignition engine, which oxidation catalyst comprises: a first washcoat region comprising platinum (Pt) and a first support material, wherein the first washcoat region is substantially free of a hydrocarbon adsorbent; a second washcoat region comprising platinum (Pt), palladium (Pd) and a second support material, wherein the second washcoat region has a ratio by mass of platinum (Pt) to palladium (Pd) of 4:1 to 1:1; a hydrocarbon adsorbent; and a substrate; wherein the first washcoat region is arranged to contact inlet exhaust gas before the hydrocarbon adsorbent, and the first washcoat region is arranged to contact inlet exhaust gas before the second washcoat region.

Oxidation catalyst for a compression ignition engine

A catalyzed soot filter comprising an oxidation catalyst for treating carbon monoxide (CO) and hydrocarbons (HCs) in exhaust gas from a compression ignition engine disposed on a filtering substrate, wherein the oxidation catalyst comprises: a platinum group metal (PGM) component selected from the group consisting of a platinum (Pt) component, a palladium (Pd) component and a combination thereof; an alkaline earth metal component; a support material comprising a modified alumina incorporating a heteroatom component.

Catalysed soot filter for treating the exhaust gas of a compression ignition engine

An on-board diagnostics system for an exhaust system of an internal combustion engine is disclosed. The system comprises a catalyzed substrate having a catalyzed region and an uncatalyzed region, a first sensor, and a second sensor. The first sensor is located within the catalyzed region of the catalyzed substrate and the second sensor is located within the uncatalyzed region of the catalyzed substrate. A method for on-board diagnostics of the catalyzed substrate is also disclosed.

On-board diagnostics system for catalyzed substrate

A catalysed soot filter comprising an oxidation catalyst for treating carbon monoxide (CO) and hydrocarbons (HCs) in exhaust gas from a compression ignition engine disposed on a filtering substrate, wherein the oxidation catalyst comprises: a platinum group metal (PGM) component selected from the group consisting of a platinum (Pt) component, a palladium (Pd) component and a combination thereof; an alkaline earth metal component; a support material comprising a modified alumina incorporating a heteroatom component.

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Royston, United Kingdom

Daniel Hatcher