Is it possible to turn a diesel engine into a less pollutant device?

Abstract The current tendency in the eastern part of Europe is to modify old diesel engines with purpose improving characteristics terms horsepower and torque, but also reduce generated pollution. are still use, against tendencies renouncing their support, at least larger urban & industrial areas, where pollution level, especially particulate matter (particles PM10, PM2.5) ozone concentrations, NO x supposed be mostly by engine vehicles. paper presents results concerning influence modifying control unit’s parameters, such as injection quantity, start injection, intake air pressure all others correlated for better performance. article brings into attention possibilities exhaust simultaneous ways external parameters. Measurement a compression ignited internal combustion before after retrofitting, reparametrization, meaning changing parameters presented discussed.