New HCCI/CAI Combustion Process Development: Methodology for Determination of Relevant Fuel Parameters

New HCCI/CAI Combustion Process Development: Methodology for Determination of Relevant Fuel Parameters — To pass the simultaneous emission requirements for near zero pollutant and low CO2 levels, which are the challenges for future powertrains, many research studies are currently carried out over the world on new engine combustion processes, such as controlled auto-ignition (CAITM) for gasoline engines and homogeneous charge compression ignition (HCCI) for Diesel engines. These new processes have the potential to reduce, by a factor of 10 to 100, NOx (Nitric Oxide emissions) and particulate (PM) emissions in comparison with a typical gasoline or diesel engine. The main issue in the development of such combustion modes remains the limited range of engine speed and load that enable correct engine running, with acceptable levels of NOx and noise emissions. One of the promising Which Fuels for Low-CO2 Engines? Quels carburants pour des moteurs à basses émissions de CO2 ? Do s s i e r Oil & Gas Science and Technology – Rev. IFP, Vol. 59 (2004), No. 6