Performance of winter rape (Brassica napus) based fuel mixtures in diesel engines
Winter rape is well adapted to the Palouse region of Northern Idaho and Eastern Washington. Nearly all of the current US production is grown in this region. Yields of 2200 to 2700 kg/ha with 45 percent oil content are common. Even though present production only 2000 to 2500 ha per year, the long history of production and good yields of oil make winter rape the best potential fuel vegetable oil crop for the region. Winter rape oil is more viscous than sunflower oil (50 cSt at 40/sup 0/C for winter rape and 35 cSt at 40/sup 0/C for sunflower oil) and about 17 times more viscous than diesel. The viscosity of the pure oil has been found too high for operation in typical diesel injector systems. Mixtures and/or additives are essential if the oil is to be a satisfactory fuel. Conversely, the fatty acid composition of witer rape oils is such that it is potentially a more favorable fuel because of reduced rates of oxidation and thermal polymerization. This paper will report on results of short and long term engine tests using winter rape, diesel, and commercial additives as the components. Selection of mixtures for long term screening tests was based on laboratory studies which included high temperature oxidation studies and temperature-viscosity data. Fuel temperature has been monitored at the outlet of the injector nozzle on operating engines so that viscosity comparisons at the actual injector temperature can be made. 1 figure, 3 tables.
- Research Organization:
- Univ. of Idaho, Moscow
- OSTI ID:
- 6105042
- Report Number(s):
- CONF-820860-
- Journal Information:
- ASAE Publ.; (United States), Conference: International conference on plant and vegetable oils as fuels, Fargo, ND, USA, 2 Aug 1982
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
09 BIOMASS FUELS
33 ADVANCED PROPULSION SYSTEMS
DIESEL ENGINES
PERFORMANCE
DIESEL FUELS
FUEL SUBSTITUTION
VEGETABLE OILS
PHYSICAL PROPERTIES
BRASSICA
COMPARATIVE EVALUATIONS
FUEL ADDITIVES
IDAHO
MIXTURES
TESTING
VISCOSITY
WASHINGTON
ADDITIVES
DISPERSIONS
ENGINES
FEDERAL REGION X
FOOD
HEAT ENGINES
INTERNAL COMBUSTION ENGINES
NORTH AMERICA
OILS
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
PETROLEUM PRODUCTS
PLANTS
USA
VEGETABLES
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