This content is not included in your SAE MOBILUS subscription, or you are not logged in.
Optimization of Injection of Pure Rape Seed Oil in modern Diesel Engines with Direct-Injection
ISSN: 0148-7191, e-ISSN: 2688-3627
Published July 23, 2007 by SAE International in United States
Annotation ability available
Natural vegetable oil like rape seed oil is a potential substitute for regular fuel for diesel engines.
Compared to other biogen fuels like rape seed methyl ester (RME), pure rape seed oil is neutral towards groundwater and it needs considerably less energy and additives for production.
Different physical properties of rape seed oil compared to Diesel fuel are the reason why conventional Diesel engines can hardly be used satisfactorily with rape seed oil without being modified. Poor exhaust-emission behavior is caused by the incomplete combustion. Due to poor spray atomization of vegetable oil, an increased fuel entrainment in the lubricating oil, carbonization in the combustion chamber and deposits at injectors and valves are further drawbacks of injection systems designed for conventional diesel fuel.
The preheating of this fuel can solve some problems. But for optimal operation of a Diesel engine operated with rape seed oil, adjustments of the injection system, the mixture preparation and the combustion are necessary. An optimized injection behavior can reduce the wall wetting of the combustion chamber with fuel due to a long injection spray cone and the corresponding fuel entrainment into the engine oil.
There are hardly any scientific investigations on injection behavior of pure rape seed oil in direct injection Diesel engines. This paper presents results of the precise analysis of the spray propagation of vegetable oil during the unfired operation in a pressure chamber. Different injection pressures, fuel temperatures and the nozzle geometry are the focus of this investigation. The investigations were realized by an injection system with inline injection pump and with a common rail injection system as well.
The results will contribute to define injection systems, which are necessary for the use of pure rape seed oil.
CitationLüft, M., Bernhardt, S., Velji, A., and Spicher, U., "Optimization of Injection of Pure Rape Seed Oil in modern Diesel Engines with Direct-Injection," SAE Technical Paper 2007-01-2031, 2007, https://doi.org/10.4271/2007-01-2031.
- QUIRIN, Markus GÄRTNER, Sven PEHNT, Martin REINHARD, Guido 2004
- REMELE, Edgar WIDMANN, Bernhard 2004
- DANISH CENTER FOR PLANT OIL TECHNOLOGY Energy balance and CO 2 Balance Hurup, Danmark 2000
- EDER, Barbara EDER, Franz Ökobuch-Verlag 2004
- KAMPMANN, Hans-Jürgen 1993 7 8 378 383
- BIRKNER, Christian 1995
- RICHTER, Hertwig 1991
- VDI GESELLSCHAFT ENERGIETECHNIK VDI-Verlag 1994
- FACHAGENTUR FÜR NACHWACHSENDE ROHSTOFFE FNR 2004
- THUNEKE, Klaus ROCKTÄSCHEL, Anja REMMELE, Edgar 58 2003 5 310 311
- MAY, H. BIRKNER, C. 1996
- HOPP, Martin 2005
- ZIEGLER, Christine 54 2005 46 8
- AUSTRALIAN NUFFIELD FARMING SCHOLARS ASSOCIATION Scholarship Report, De-centralised energy production, Australien Government Rural Industries Research and Development Corporation 2005
- NAUWERCK. Andreas PFEIL, Jürgen VELJI, Amin SPICHER, Ulrich RICHTER, Boyke A Basic Experimental Study of Gasoline Direct Injection at Significantly High Injection Pressures SAE-Paper SAE- 2005-01-0098