Société : IFP Energies nouvelles – Sciences et Technologies du Numérique
Ultra-lean spark-ignition engine simulation platform
Description of the subject:
Lean burn gasoline spark-ignition engines can support the reduction of CO2 emissions for future hybrid passenger cars. Very high efficiencies and very low NOx raw emissions can be achieved, if relative air/fuel ratios λ of 2 and above can be reached. The most important challenge is then to achieve a reliable ignition process and to support the complete fuel oxidation in order to shorten the burn duration, to enhance the combustion stability and to lower the pollutant emissions.
Investigations are currently being performed at IFPEN with single cylinder and multicylinder engines operating in ultra-lean conditions with scanvenged pre-chamber ignition systems. The effects of various engine settings on engine performance such as efficiency and pollutant emissions can be evaluated based upon an experimental database available for different engine configurations. However, some effects cannot be p [...]
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