Catalytic automotive exhaust gas depollution: Present status and new trends

Abstract

Journ6e de Contact en Catalyse de la Communauth Franpaise de Belgique : "Catalyse par les metaux" le 7 dbcembre 1995, Bruxelles ABSTRACTA review is made of the various types of exhaust gas aftertreatment systems presently used on most vehicles to reduce pdlutant emissions. The systems are differentiated by their mode of action, according to the engine type to be depolluted (2-strokes, 4-strokes, diesel or spark-ignition), and by their type of make-up. The major developmentsforeseen in the future, in view of compliance with the new legislations, are described. Means enabling some prototype vehicles with internal combustion engines to emit pollutant quantities really close to zero, such as electric cars, are described.