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Influence of Biodiesel on Engine Emissions and Performance http://courses.washington.edu/dtsclass/Chem\_E\_486\_05.html Sources “A Comprehensive Analysis of Biodiesel Impacts on Exhaust Emissions,” October 2002 (EPA420-P-02-001)

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slide1
Influence of Biodiesel on Engine Emissions and Performance

http://courses.washington.edu/dtsclass/Chem_E_486_05.html

Sources

“A Comprehensive Analysis of Biodiesel Impacts on Exhaust Emissions,” October 2002 (EPA420-P-02-001)

Gokalp I, Lebas E, “Alternative fuels for industrial gas turbines (AFTUR)”

APPLIED THERMAL ENGINEERING 24 (11-12): 1655-1663 AUG 2004

Cetinkaya M, Ulusoy Y, Tekin Y, et al., “Engine and winter road test performances of used cooking oil originated biodiesel ,” ENERGY CONVERSION AND MANAGEMENT 46 (7-8): 1279-1291 MAY 2005

slide2
Minimum

typical

Fuel Properties: Density vs Cetane

The cetane number measures the ignition quality of a diesel fuel.

slide3
Fuel Properties: Differences in Sources

Specific Properties are source dependent

slide7
Lower MPG typically means more CO2

Emission is only part of the story: Life Cycle Assessment

slide14
Biodiesel Emissions vis-a-vis Diesel

What can we conclude?

What more do we need to know?

slide19
7500km Winter Road Test of Renault Megane Diesel

Carbon on injectors 4240 km

Clean injectors 7500 km

Fuel undergoes extra glycerine separation + viscosity modifier mid-way

slide20
7500km Winter Road Test of Renault Megane Diesel

Catalytic converter had carbon problems in original fuel, but not second fuel (shown at end).

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Manufacturer Warranty Information

“Most major engine companies have stated formally that the use of blends up to B20 will not void their parts and workmanship warranties. This includes blends below 20% biodiesel, such as the 2% biodiesel blends that are becoming more common. Some engine companies have already specified that the biodiesel must meet ASTM D-6751 as a condition, while others are still in the process of adopting D-6751 within their company or have their own set of guidelines for biodiesel use that were developed prior to the approval of D-6751.”

Statements

• Caterpillar

• Cummins

• Detroit Diesel

• Ford

• GM Motors

• International

• John Deere

From

http://www.biodiesel.org/resources/fuelfactsheets/standards_and_warranties.shtm#statements

slide22
Biodiesel Performance vis-a-vis Diesel

What can we conclude?

What more do we need to know?

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