Experimental Investigation on Combustion Strategy of Light Duty GCI Fuelled With High Reactivity Gasoline Fuel

2024-01-4282

To be published on 11/05/2024

Event
Energy & Propulsion Conference & Exhibition
Authors Abstract
Content
Diesel engines are largely used as power units with high fuel efficiency. Conversely, they have an adverse impact on the environment and human health as they emit high NOx and particulate Matter (PM) emissions. As more stringent regulations for emissions are introduced, low temperature combustion (LTC) strategy such as Gasoline Compression Ignition (GCI) demonstrated the potential to reduce the PM, NOx emissions by operating engines under a Partially Premixed Combustion (PPC) mode. Therefore, A 0.550 mm single cylinder engine SCE, which is operated at Gasoline Direct Injection Ignition (GDCI), was tested over range of engine loads with constant speed (1500 rpm) using RON80 without oxygenate. Different operating parameters such as injection were used to control combustion phasing and mixture stratifications. At low loads, rebreathing (RB) of hot exhaust gas produced low levels of NOx and smoke emissions. It reduced NOx nearly 60% and smoke levels below 0.20 FSN when it is coupled with low levels of EGR. At medium to high loads, alternative injection strategies were explored to find proper combustion mode with very low NOx 0.01 g/kwh and smoke 0.01 FSN emissions while meeting combustion noise targets. Minimum ISFC was measured at 195 g/kwh at 13 bar IMEP.
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Citation
Qahtani, Y., Sellnau, M., and Yu, X., "Experimental Investigation on Combustion Strategy of Light Duty GCI Fuelled With High Reactivity Gasoline Fuel," SAE Technical Paper 2024-01-4282, 2024, .
Additional Details
Publisher
Published
To be published on Nov 5, 2024
Product Code
2024-01-4282
Content Type
Technical Paper
Language
English