TY - GEN
T1 - Investigation on the impact of fuel properties on partially premixed combustion characteristics in a light duty diesel engine
AU - Solaka, Hadeel
AU - Tunér, Martin
AU - Johansson, Bengt
PY - 2012
Y1 - 2012
N2 - The impact of fuel composition on the emission performance and combustion characteristics for partially premixed combustion (PPC) were examined for four fuels in the gasoline boiling range together with Swedish diesel MK1. Experiments were carried out at 8 bar IMEPg and 1500 rpm with 53±1% EGR and λ = 1.5. This relation gave inlet mole fractions of approximately 5% CO2 and 13% O2. The combustion phasing was adjusted by means of start of injection (SOI), for all fuels, over the range with stable combustion and acceptable pressure rise rate combined with maintained λ, EGR ratio, inlet pressure, and load. The operating range was limited by combustion instability for the high RON fuels, while MK1 and the low RON fuels could be operated over the whole MBT plateau. The largest difference in engine-out emissions between the fuels was the filtered smoke number (FSN), as the gasoline fuels produced a much lower FSN value than MK1. Higher RON value gave higher levels of carbon monoxide (CO) and unburned hydrocarbon (HC) for the gasoline fuels, while MK1 had the lowest levels of these emissions.
AB - The impact of fuel composition on the emission performance and combustion characteristics for partially premixed combustion (PPC) were examined for four fuels in the gasoline boiling range together with Swedish diesel MK1. Experiments were carried out at 8 bar IMEPg and 1500 rpm with 53±1% EGR and λ = 1.5. This relation gave inlet mole fractions of approximately 5% CO2 and 13% O2. The combustion phasing was adjusted by means of start of injection (SOI), for all fuels, over the range with stable combustion and acceptable pressure rise rate combined with maintained λ, EGR ratio, inlet pressure, and load. The operating range was limited by combustion instability for the high RON fuels, while MK1 and the low RON fuels could be operated over the whole MBT plateau. The largest difference in engine-out emissions between the fuels was the filtered smoke number (FSN), as the gasoline fuels produced a much lower FSN value than MK1. Higher RON value gave higher levels of carbon monoxide (CO) and unburned hydrocarbon (HC) for the gasoline fuels, while MK1 had the lowest levels of these emissions.
UR - http://www.scopus.com/inward/record.url?scp=84882690025&partnerID=8YFLogxK
U2 - 10.1115/ICES2012-81184
DO - 10.1115/ICES2012-81184
M3 - Conference contribution
AN - SCOPUS:84882690025
SN - 9780791844663
T3 - Proceedings of the Spring Technical Conference of the ASME Internal Combustion Engine Division
SP - 335
EP - 345
BT - ASME 2012 Internal Combustion Engine Division Spring Technical Conference, ICES 2012
PB - American Society of Mechanical Engineers (ASME)
T2 - ASME 2012 Internal Combustion Engine Division Spring Technical Conference, ICES 2012
Y2 - 6 May 2012 through 9 May 2012
ER -