The Effect of Various Petrol-Ethanol Blends on Exhaust Emissions and Fuel Consumption of an Unmodified Light-Duty SI Vehicle Bosmal Automotive Research and Development Institute Limited

Format:

Conference/Event

Author/Creator:

Bielaczyc, Bielaczyc, author.

Contributor:

Szczotka, Andrzej

Woodburn, Joseph

Conference Name:

10th International Conference on Engines & Vehicles (2011-09-11 : Naples, Italy)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 2011

Summary:

Due to limited fossil fuel resources and a need to reduceanthropogenic CO₂ emissions, biofuel usage is increasing inmultiple markets. Ethanol produced from the fermentation of biomasshas been of interest as a potential partial replacement forpetroleum for some time; for spark-ignition engines, bioethanol isthe alternative fuel which is currently of greatest interest. Atpresent, the international market for ethanol fuel consists of E85fuel (with 85 percent ethanol content), as well as lowerconcentrations of ethanol in petrol for use in standard vehicles(E5, E10). The impact of different petrol-ethanol blends on exhaustemissions from unmodified vehicles remains under investigation. Thepotential for reduced exhaust emissions, improved security of fuelsupply and more sustainable fuel production makes work on theproduction and usage of ethanol and its blends an increasinglyimportant research topic. This paper evaluates the possibility ofusing petrol-ethanol blends in a modern Euro 4 vehicle withoutsubstantial engine modification. The influence of differentquantities of ethanol in petrol blends (E5, E10, E25, E50 and E85)on the emission measurement of the gaseous pollutants carbonmonoxide (CO), hydrocarbons (HC), oxides of nitrogen(NOx) and carbon dioxide (CO₂) for a passenger car wereanalyzed over the New European Driving Cycle (NEDC) on a chassisdynamometer.The results obtained revealed that exhaust emissions areaffected by the proportion of ethanol in the blend. Engine-outemissions of HC, CO and NOx were found to varysignificantly with the blend used. Fuel injection time, engine-outand exhaust temperatures and the efficiency of the aftertreatmentsystem were all also found to vary from blend to blend. Fuelconsumption increased approximately in line with blend energeticcontent for all blends, apart from when running on E85.The experimental work presented in this paper was performed aspart of a test program evaluating biofuels' influence onlight-duty petrol engines for passenger cars and light commercialvehicles

Notes:

Vendor supplied data

Publisher Number:

2011-24-0177

Access Restriction:

Restricted for use by site license