Combustion Stability Investigation of Ethanol Blends (E5, E10) in a Twin-cylinder CI Engine
2022-01-0612
03/29/2022
- Event
- Content
- Ethanol can be easily derived from waste agricultural resources such as plant biomass and forest residue, ease of production increases its possibility of usage locally in agricultural engine and transport vehicles. To explore the combustion stability, combustion behavior and emissions parameters of ethanol in existing CI engine, a laboratory experiment was carried out, using CRDI Diesel engine at three different loading condition (no-load, 20 Nm and 40 Nm) with three different test fuel (D100, E05 and E10). The maximum in-cylinder pressure and HRR were increased with ethanol addition into diesel. Ethanol’s higher heat of vaporization promotes cooling effects that prolong ignition time. Inherent oxygen and lower viscosity of ethanol improve the combustion phenomena, which results in the lower cycle to cycle variation and lower Coefficient of variation (COV) for in-cylinder pressure. Combustion stability was increased with the addition of ethanol. E05 is showing the lowest COV value (1-3%), then E10 (2-5%) followed by D100 (3-6%). Lover standard deviation were observed for E05 fuel throughout the combustion, represent stable combustion among tested fuels (D and E10) in test conditions (40 Nm). Lower Carbon to hydrogen ratio and stable combustion, decrease CO, HC and smoke emissions by a substantial amount in the tail pipe with the increasing amount of ethanol in blends compare to base fuel.
- Citation
- Sahu, T., Kshatri, R., Kumar, A., and Shukla, P., "Combustion Stability Investigation of Ethanol Blends (E5, E10) in a Twin-cylinder CI Engine ," SAE Technical Paper 2022-01-0612, 2022, .