Browse Publications Technical Papers 2014-01-2686
2014-10-13

Experimental Investigation of Different Blends of Diesel and Gasoline (Dieseline) in a CI Engine 2014-01-2686

Combustion behaviour and emissions characteristics of different blending ratios of diesel and gasoline fuels (Dieseline) were investigated in a light-duty 4-cylinder compression-ignition (CI) engine operating on partially premixed compression ignition (PPCI) mode. Experiments show that increasing volatility and reducing cetane number of fuels can help promote PPCI and consequently reduce particulate matter (PM) emissions while oxides of nitrogen (NOx) emissions reduction depends on the engine load. Three different blends, 0% (G0), 20% (G20) and 50% (G50) of gasoline mixed with diesel by volume, were studied and results were compared to the diesel-baseline with the same combustion phasing for all experiments. Engine speed was fixed at 1800rpm, while the engine load was varied from 1.38 to 7.85 bar BMEP with the exhaust gas recirculation (EGR) application. Results show that, compared to the diesel baseline, the total particle number concentration of G50 was reduced by up to 50% and 90% and count median diameter (CMD) was reduced by 25% and 75% at medium and low loads respectively. The G50 blend had the lowest smoke emission level (0.5 FSN) for all tested load conditions. NOx emissions decreased by 50% at low load and increased by 20% at medium load for G50 compared with the diesel. Compared to diesel, Dieseline led to lower in-cylinder pressure rise and heat release rate peaks at low loads and it prolonged the combustion delay by up to 7 angles compared to the diesel-baseline condition. Dieseline proved to be an attractive fuel for improving the premixed combustion in CI engines.

SAE MOBILUS

Subscribers can view annotate, and download all of SAE's content. Learn More »

Access SAE MOBILUS »

Members save up to 18% off list price.
Login to see discount.
We also recommend:
TECHNICAL PAPER

In-Cylinder Fuel Blending of Gasoline/Diesel for Improved Efficiency and Lowest Possible Emissions on a Multi-Cylinder Light-Duty Diesel Engine

2010-01-2206

View Details

TECHNICAL PAPER

Effects of Low Temperature Premixed Combustion (LTPC) on Emissions of a Modern Diesel Engine for Passenger Cars

2010-01-0333

View Details

TECHNICAL PAPER

The Usefulness of Negative Valve Overlap for Gasoline Partially Premixed Combustion, PPC

2012-01-1578

View Details

X