Tailoring fuels for the new millennium

This introductory paper presents the perspective of an oil company on autom otive fuels development and vehicle emissions. Studies arc described of fue l effects on aftertreatment catalyst efficiencies for both modem gasoline a nd diesel vehicles. Shell has consistently responded to the fuel requiremen ts of both customers and new vehicle technologies over the past few decades and will continue to do so. As society moves to more sustainable energy so urces, the future of automotive mobility is discussed; new, alternative veh icles technologies are expected to emerge, which may require completely new fuels, and this could lead to a reshaping of our fuels (energy) business.