Soot particles can significantly influence the Earth’s climate by absorbing and scattering solar radiation as well as by acting as cloud condensation nuclei. However, despite their environmental (as well as economic and political) importance, the way these properties are affected by atmospheric processing of the combustion exhaust gases is still a subject of discussion. In this work, individual...

One of the important problems in reducing of pollutant emission from DI and IDI diesel engines is trade-off  between soot and NOx. Split injection is one of the most powerful tools that makes the chance to shift the trade-off curve closer to origin.  At the present work, the effect of split injection on the combustion process and emissions of a cylinder IDI diesel engine under the specification...

Combustion of stationary JP8 fuel droplets mixed with additives is examined in a low gravity environment to reduce the influence of convection and promote spherical droplet flames. Both qualitative information on flame structure and sooting tendencies and quantitative information on evaporation rates and flame and soot shell diameters are reported. The additives were hexanol (C6H14O) and a comm...

polycyclic aromatic hydrocarbon (pah) plays an important role in the formation of combustion-generatedparticles such as soot, and their presence in atmosphere aerosols has been widely shown. the formation of five-membered rings, detected in combustion effluent, is of great interest due to their genotoxic activity.the present study reports an investigation of the electronic structure of acenapht...

In the recent decades, the change in the air quality caused by pollutant emissions that are harmful to human health and to the environment has been a subject of an increasing concern. Among these pollutants, particulate emissions arising from the incomplete combustion of diesel deserve a special attention due to many adverse health effects, especially on the respiratory system. In view of this ...

In this paper, a numerical study is performed to provide the combustion and emission characteristics resulting from fuel-reactivity controlled compression ignition (RCCI) combustion mode in a heavy-duty, single-cylinder diesel engine with gasoline and diesel fuels. In RCCI strategy in-cylinder fuel blending is used to develop fuel reactivity gradients in the combustion chamber that result in a ...

The basic LaCoO3 perovskite oxides were prepared by the series of methods (reverse co-precipitation, citric acid aided sol–gel, glycine assisted solution combustion), underwent physicochemical characterization (XRD, FTIR, BET, XPS and SEM), followed their soot oxidation activity tests in both “loose” “tight” conditions soot-catalyst contact. revealed that catalyst formed using combustion synthe...

New combustion concepts developed in internal combustion engines such as homogeneous charge compression ignition (HCCI) have attracted serious attention due to the possibilities to simultaneously achieve higher efficiency and lower emissions, which will impact the environment positively. The HCCI combustion concept has potential of ultra-low NOX and particulate matter (PM) emission in compariso...