Gaseous emissions, diesel combustion

Fuel combustion can lead to pyrolysis of hydrocarbon fuels and soot formation, important in diesel engines and contributing to particulate emissions. A proportion of this soot finds its way into the lubricating oil and increasing use of EGR systems to reduce particulate and gaseous emissions has led to higher levels of soot loading in lubricants. 

The main use of CcOj and ceria based compounds is in depollution of noxious species from gaseous stream originating either from stationary or mobile source. The majority of studies deals with the application of ceria as an oxygen storage in TWCs and in the development of novel technologies for the treatment of emissions from diesel and spark ignited internal combustion engines [1,2]. 

In contrast to gaseous diesel emissions, PM does not represent a defined chemical species. From a legislative point of view PM is defined as any matter in the exhaust of an internal combustion engine that can be trapped on a specified sampling filter medium at 325 K, by drawing an exhaust gas sample from the vehicle exhaust system and diluting with a required amount of air. The specific composition of diesel particulate matter depends upon several... 

---