Polycyclic aromatic hydrocarbon and soot emissions in a diesel engine and from a tube reactor

An investigation into the exhaust emissions of carcinogenic polycyclic aromatic hydrocarbons (PAHs) from a diesel engine was reported. The study is reinforced by experimental results obtained tube reactor aimed at examining PAH formation processes these fuels. paper cantered on 16 priority PAHs suggested United States Environmental Protection Agency (US-EPA). These were produced burning conventional fuel and few binary fuels prepared blending various proportions toluene heptane. Special consideration given to B2 subgroup which are known human-carcinogens. Both gas born (smaller) PAHs, as well larger adsorbed onto particulate investigated. used single-cylinder, light duty, high speed, automotive research run an Indicated Mean effective pressure (IMEP) 7 bar. Particulate matter also in temperatures ranging 1050 1350 °C under pyrolysis (oxygen-free) conditions soot resemble, extent, those found core sprays. In engine, it that influenced combustion characteristics like heat release rates ignition delay. However, quiescent oxygen-free reactor, chemical composition temperature dominated formation.