ABSTRACT
Since the invention of the diesel engine in 1892 by German
engineer Rudolf Diesel, it has been widely used in heavy-
duty trucks, buses, farming, mining, and construction equip-
ment, stand-by power generators, ships, locomotives, fork-
lifts, and other materials handling equipment. The diesel is
the most energy efficient workhorse engine of all the differ-
ent types of internal combustion engines commonly avail-
able today. In the past, diesel engines have been considered
as dirty and sluggish, smelly and loud. Significant improve-
ments in diesel emission levels have been achieved in the
last 20 years. Today’s diesel engines are much cleaner than
before and are more rugged, powerful, durable, and reliable
than gasoline engines. As the number of diesel vehicles and
equipment increases, the emission control remains the big-
gest challenge for tomorrow’s diesel engines. The diesel
industry will continue its efforts to control emissions asso-
ciated with on-road diesel vehicles and off-road diesel
equipment using advanced clean diesel technology that
combines cleaner diesel fuel, advanced engine design, and
effective exhaust-aftertreatment.
