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1 November 2000

Cleaning Up Dirty Diesels Wins Johnson Matthey the UK's Biggest Engineering Innovation Prize

A revolutionary emission control system that has enabled diesel trucks and buses all over Europe to clean up their act has won Johnson Matthey its second Royal Academy of Engineering MacRobert Award; the UK's most coveted prize for engineering innovation. This year the £50,000 award goes to the Johnson Matthey team which developed the Continuously Regenerating Trap (CRTT) to control pollution from heavy duty diesel vehicles. The award coincides with the fifth anniversary of the commercial launch of the CRTT.

HRH Prince Philip, Duke of Edinburgh, will present the MacRobert Award, at a ceremony to be held at Buckingham Palace on 30th November 2000. The Award will be received by Chris Clark, Chief Executive of Johnson Matthey and Dr Pelham Hawker, Dr Barry Cooper, Jim Thoss and Pär Jones, the team who led the effort to develop and commercialise the CRTT. The company first won the Award in 1980 for its pioneering work in the development and commercialisation of autocatalysts for the control of emissions from petrol engines. Dr Barry Cooper was also a member of the team in 1980 and is the first person in the award's 31-year history to win it twice.

Diesel particulates are known to aggravate respiratory and cardiovascular health problems. The ultrafine carbon particles produced by diesel engines appear to be particularly damaging because they become lodged deep inside the lungs. "The diesel engine is essential for transporting goods, services and people but it has one major drawback - it pollutes. Even the latest diesel engines still emit smoke under certain operating conditions and all diesel engines produce fine soot particles," says Dr Barry Cooper, Vice President, Diesel Emission Control Systems, Johnson Matthey. "A normal catalyst cannot remove the particulates but the CRTT removes more than 85 per cent of the soot, hydrocarbons and carbon monoxide."

Last year alone Johnson Matthey sold nearly 5,000 CRTT systems and is currently selling more than 500 units a month. Many bus operators in London and other major cities now fit the system and tightening emissions standards around the world will create an important new market for this technology over the next five years.

While the CRTT design concept was patented in 1989, it could not be commercialised then because low-sulphur diesel, on which the CRTT runs, was unavailable. The breakthrough did not come until the early 1990s when Sweden introduced low-sulphur fuel in response to environmental concerns. Pär Jones led the team that devised the first commercial version of the CRTT for sale in Scandinavia, which still accounts for over one-third of the current market. Germany and the UK introduced low-sulphur diesel and started to levy lower taxes for cleaner fuel in the late 1990s, opening up new markets for the CRTT.

"All vehicle emissions are improved by using low-sulphur fuel," says Dr Pelham Hawker, Managing Director, Catalytic Systems Division, Johnson Matthey. "The CRTT will help deliver the full benefits of, and stimulate demand for, low-sulphur diesel in the same way as our petrol engine catalysts did for unleaded petrol."

Notes for Editors

About the CRTT

The CRTT works in a two-stage process. First the exhaust gases pass through a grid impregnated with platinum, which catalyses the production of nitrogen dioxide from the nitrogen monoxide and oxygen normally present in the exhaust gas. The gases and the soot then go into the ceramic trap, which retains the carbon particles while the gases flow through the porous walls. The nitrogen dioxide flow enables the carbon to burn away leaving the filter clean. More information on the CRTT.

About the MacRobert Award

The Royal Academy of Engineering MacRobert Award is Britain's premier prize for engineering. It is given annually for outstanding innovation of benefit to the community. First presented in 1969, the award consists of a solid gold medal and £50,000 prize.

1. HRH the Duke of Edinburgh, Senior Fellow of the Academy, will present the winning team with their medal and prize at a special ceremony at Buckingham Palace on 30 November 2000.

2. The three other finalists this year were BAE Systems in Edinburgh for the CAPTOR radar for Eurofighter, Thermomax in Newport for their solar water heating system, and NXT plc in Huntingdon for the first flat panel loudspeaker.

3. The Royal Academy of Engineering aims to pursue, encourage and maintain excellence across the whole field of engineering in order to promote the advancement of the science, art and practice of engineering for the benefit of the public. The Academy comprises the UK's most eminent engineers and is able to use their combined wealth of knowledge and experience to meet its objectives.

For more information and photos please contact:
Johnson Matthey
Ian Godwin
Group Public Relations Manager
Tel: +44 (0)20 7269 8410
E-mail: godwini@matthey.com

Jane Sutton
Royal Academy of Engineering
Tel: 020 7227 0536
Mobile: 07989 513045
E-mail: suttonj@raeng.co.uk
Web: www.raeng.org.uk