Economic (fuel price), political (energetic independence), health (cancerous pollutants) and environmental (green house effect) concerns have greatly contributed to the evolution of pollutant emission regulations and fuel consumption regulations in the last decade. A better understanding of the combustion process for operating conditions near the stability limit will probably be the next step t...

Abstract The Homogeneous Charge Compression Ignition (HCCI) concept shows great potential for improving engine efficiency and reducing pollutant emissions. However, the operation with this in Internal Combustion (IC) engines is still limited to low speed load conditions, as excessive Pressure Rise Rates (PRR) are generated its fast auto-ignition. To overcome limitation, use of moderate thermal ...