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Elliott, Nigel
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Impact of Biodiesel Blends on Fuel Consumption and Emissions in Euro 4 Compliant Vehicles

SAE International Journal of Fuels and Lubricants

Aristotle Univ. of Thessaloniki-Zissis Samaras, Georgios Fontaras, Maria Kalogirou
BP Global Fuels Technology-Cassandra Higham
  • Journal Article
  • 2010-01-1484
Published 2010-05-05 by SAE International in United States
Fatty Acid Methyl Ester (FAME) products derived from vegetable oils and animal fats are now widely used in European diesel fuels and their use will increase in order to meet mandated targets for the use of renewable products in road fuels. As more FAME enters the diesel pool, understanding the impact of higher FAME levels on the performance and emissions of modern light-duty diesel vehicles is increasingly important. Of special significance to Well-to-Wheels (WTW) calculations is the potential impact that higher FAME levels may have on the vehicle's volumetric fuel consumption.The primary objective of this study was to generate statistically robust fuel consumption data on three light-duty diesel vehicles complying with Euro 4 emissions regulations. These vehicles were evaluated on a chassis dynamometer using four fuels: a hydrocarbon-only diesel fuel and three FAME/diesel fuel blends containing up to 50% v/v FAME. One FAME type, a Rapeseed Methyl Ester (RME), was used throughout. One vehicle was equipped only with an oxidation catalyst while the other two were also equipped with two types of Diesel Particulate Filters…
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Impact of Fuel Properties on Advanced Combustion Performance in a Diesel Bench Engine and Demonstrator Vehicle

Chevron USA Inc.-William Cannella
Concawe-Kenneth D. Rose
Published 2010-04-12 by SAE International in United States
Six diesel, kerosene, gasoline-like, and naphtha fuels have been tested in a single cylinder diesel engine and a demonstrator vehicle, both equipped with similar engine technology and optimized for advanced combustion performance. This study was completed in order to investigate the potential to reduce engine-out emissions while maintaining engine efficiency and noise levels through changes in both engine hardware and fuel properties. The fuels investigated in this study were selected in order to better understand the effects of ignition quality, volatility, and molecular composition on engine-out emissions and performance. The optimized bench engine used in this study included engine hardware enhancements that are likely to be used to meet Euro 6 emissions limits and beyond, in part by operating under advanced combustion conditions, at least under some speed and load conditions. The engine enhancements included high fuel injection pressures, high EGR levels and charge cooling, and closed loop combustion control to ensure a constant combustion phasing with different fuels. With these modifications, it was found that the engine could run on a wide range of…
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