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Use of straight vegetable oil mixtures of rape and camelina as on farm fuels in agriculture

Paulsen, H. M.; Wichmann, V.; Schuemann, U. and Richter, B. (2011) Use of straight vegetable oil mixtures of rape and camelina as on farm fuels in agriculture. BIOMASS AND BIOENERGY, 35 (9), pp. 4015-4024.

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Summary

Possibilities for using straight vegetable oil (SVO) from Camelina sativa (L.) Crantz (camelina or false flax) and its mixtures with Brassica napus (rape) SVO as fuel in adapted diesel engines are described with chemical parameters, measurements in a test engine and a field test in a tractor. Camelina as a crop is attracting attention in organic farming and is often used in mixed cropping systems with low competition to food production area. Camelina SVO has low oxidation stability. Its polymerization affinity limits the storage time and increase the risk of coking at hot motor components and of thickening processes in the lubricant oil of the engine. In mixtures with rape and camelina SVO, threshold limits for Conradson Carbon Residues and for oxidation resistance were exceeded. The oxidation resistance could be prolonged by the addition of commercial antioxidants. Camelina and rape SVO showed very similar burning characteristics at full-to-medium partial engine loads. Under low partial loads and idle load, the burning function of the various fuels was increasingly delayed, beginning with diesel fuel over pure rape SVO, then a mixture containing 700 dm3 m!3 rape SVO, and 300 dm3 m!3 camelina SVO, through to pure camelina SVO. The exhaust emissions of NOx-, CO-, particles and HC of rape SVO, camelina SVO and their described mixture were not significantly different. The typically higher NOx- and lower HC-emissions of SVO compared to diesel fuel were apparent. The results principally reveal the usability of a cold pressed, non-refined camelina-rape SVO mixture in adapted diesel engines.


EPrint Type:Journal paper
Keywords:Organic farming, Self-sufficient farming system, Camelina sativa L. Crantz, Brassica napus L., Mixed cropping, Biofuel
Subjects:"Organics" in general
Farming Systems
Food systems > Recycling, balancing and resource management
Research affiliation: Germany > Federal Research Institute for Rural Areas, Forestry and Fisheries - VTI > Institute of Organic Farming - OEL
Germany > Other organizations
ISSN:0961-9534
DOI:10.1016/j.biombioe.2011.06.031
Related Links:http://www.sciencedirect.com/science/article/pii/S0961953411003552
Deposited By: Rahmann, Prof. Dr. Gerold
ID Code:19912
Deposited On:17 Jan 2012 12:30
Last Modified:17 Jan 2012 12:30
Document Language:English
Status:Published
Refereed:Peer-reviewed and accepted

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