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ESIT2018@JW Marriott Khao Lak Resort and Spa, Phang-Nga, THAILAND

Automotive Emissions Control in the Present and Future


Dr Andrew P.E. York


Johnson Matthey Technology Centre, Blount’s Court, Sonning Common, Reading, RG4 9NH, U.K.


The future for emissions from transport will involve the optimisation of the engine, fuel and emissions control systems.  There will also be alternative technologies introduced to address the problem of CO2 emissions.  However, the internal combustion engine will remain the foremost powertrain technology looking well into the future, with alternative strategies being introduced alongside, in either hybrid vehicles or as fully electric vehicles.  Therefore catalytic exhaust aftertreatment will continue to be extremely important to control pollutants.

The catalytic converter’s story has many chapters, from the early application of oxidation catalysts in California, through three-way catalysts, and more recently the control of exhaust emissions from diesel vehicles.

Catalytic converters are essential for controlling harmful vehicle exhaust emissions, and are an integral part of most vehicles sold in Europe, America and in many parts of the world; photochemical smog, carcinogenic compounds and particulate matter are all reduced through their use.  Diesel vehicles provide a specific challenge due to the very lean nature of diesel exhaust.  Ever tightening gasoline and diesel emissions legislation will necessitate a blend of advances in engine design, electronic vehicle control systems, and catalytic devices (in terms of activity, long term stability and cost).

In this lecture methods for tackling gasoline and diesel vehicle exhaust emissions using catalytic devices in production today will be presented, as well as some advances in the industry, and future requirements and challenges for tomorrow’s catalysts.  The lecture will discuss the concepts of layering and zoning catalysts in a single monolith substrate and introduce some novel analytical techniques for understanding the performance of various aftertreatment catalyst systems, e.g. particulate filters.