How biodiesel/diesel fuel blends affect spray breakup and emissions

Wensing M, Gostic I, Senghaas C, Willmann M (2010)

Publication Language: English

Publication Type: Conference contribution, Conference Contribution

Publication year: 2010

Event location: Brno CZ

Abstract

In the current study the influence of biodiesel blends in diesel fuel as well as the pure biodiesel and diesel fuels on the spray breakup in a cold chamber and on the emissions on a single-cylinder diesel engine was examined. Blending biodiesel FAME B100 with diesel B0 leads to a reduction in filter smoke number (FSN) and unburned hydrocarbons (HC). The lowest HC and FSN values were measured when pure biodiesel FAME B100 was used. An increase in NOx emissions is observed at very high proportions of biodiesel of 50 % or with pure biodiesel FAME B100. The current study showed that the cause of the changed emission results due to biodiesel blend can be explained not only in chemical terms (increased oxygen fraction in the biodiesel), but also partly in physical terms. At high proportions of biodiesel, the greatly increased viscosity of the biodiesel is an important variable influencing the formation of NOx. The effect of profile relaxation leads to a larger spray cone angle, which results in an increased thermal zone for the formation of NOx.

Authors with CRIS profile

Michael Wensing Professur für Fluidsystemtechnik

Involved external institutions

Woodward L'Orange GmbH DE Germany (DE)

How to cite

APA:

Wensing, M., Gostic, I., Senghaas, C., & Willmann, M. (2010). How biodiesel/diesel fuel blends affect spray breakup and emissions. In Proceedings of the 23rd Annual Conference on Liquid Atomization and Spray Systems. Brno, CZ.

MLA:

Wensing, Michael, et al. "How biodiesel/diesel fuel blends affect spray breakup and emissions." Proceedings of the 23rd Annual Conference on Liquid Atomization and Spray Systems, Brno 2010.

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