ABSTRACT This paper presents the results of experimental and numerical investigations on pre-igni... more ABSTRACT This paper presents the results of experimental and numerical investigations on pre-ignition in a series-production turbocharged DISI engine. Previous studies led to the conclusion that pre-ignition can be triggered by auto-ignition of oil droplets generated in the combustion chamber. Analysis of more recent experiments shows that a modification of the engine operation parameters that promotes spray/lubricant interaction also increases pre-ignition frequency, while modifications that enhance the speed of chemical reactions (thereby favoring auto-ignition) have little or no influence. The experimental and numerical findings can be explained if we assume the existence of a substance (originating from lubricant/fuel interaction) that displays extremely short ignition delay times.
... Simultaneous Mie scattering and LIF imaging was performed for injection pressures of 200, 150... more ... Simultaneous Mie scattering and LIF imaging was performed for injection pressures of 200, 150 ...Cavitation, primary break-up and flash boiling of gasoline, iso-octane and n ... S., Gavaises, M., Arcoumanis, C., Theodorakakos, A., Komentani, S., Multi-component fuel modelling and ...
ABSTRACT This paper presents the results of experimental and numerical investigations on pre-igni... more ABSTRACT This paper presents the results of experimental and numerical investigations on pre-ignition in a series-production turbocharged DISI engine. Previous studies led to the conclusion that pre-ignition can be triggered by auto-ignition of oil droplets generated in the combustion chamber. Analysis of more recent experiments shows that a modification of the engine operation parameters that promotes spray/lubricant interaction also increases pre-ignition frequency, while modifications that enhance the speed of chemical reactions (thereby favoring auto-ignition) have little or no influence. The experimental and numerical findings can be explained if we assume the existence of a substance (originating from lubricant/fuel interaction) that displays extremely short ignition delay times.
... Simultaneous Mie scattering and LIF imaging was performed for injection pressures of 200, 150... more ... Simultaneous Mie scattering and LIF imaging was performed for injection pressures of 200, 150 ...Cavitation, primary break-up and flash boiling of gasoline, iso-octane and n ... S., Gavaises, M., Arcoumanis, C., Theodorakakos, A., Komentani, S., Multi-component fuel modelling and ...
Uploads