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Dimethyl Ether (DME) - Assessment of Viscosity Using the New Volatile Fuel Viscometer (VFVM)
ISSN: 0148-7191, e-ISSN: 2688-3627
Published May 07, 2001 by SAE International in United States
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This paper describes the development and test of a viscometer capable of handling dimethyl Ether (DME) and other volatile fuels.
DME has excellent combustion characteristics in diesel engines but the injection equipment can break down prematurely due to extensive wear when handling this fuel. It was established, in earlier work, that the wear in the pumps is substantial even if the lubricity of DME is raised to a believed acceptable level using anti-wear additives.
An influence of the viscosity on the wear in the pumps was suspected. The problem, up to now, was that the viscosity of DME has only been estimated or calculated but never actually measured.
In the present work a volatile fuel viscometer (VFVM) was developed. It is of the capillary type and it was designed to handle DME, neat or additised. The kinematic and dynamic viscosities of pure DME were measured at 0.185 cSt and 0.122 cP at 25 °C respectively.
The VFVM established that low concentrations of additives do not affect the viscosity of DME significantly. This is the case even when the additive has a high viscosity or is solid at ambient temperature. The viscosity of DME blends can reach that of diesel oil but only when the additive is present in very large proportions.
It is not believed that reasonably additised DME can reach the same viscosity and lubricity as diesel oil. The solution is rather to design the pumps so they can handle pure DME.
|Technical Paper||Dimethyl Ether (DME) - Assessment of Lubricity Using the Medium Frequency Pressurised Reciprocating Rig Version 2 (MFPRR2)|
|Technical Paper||Investigation of the Combustion Process of a DI CI Engine Fueled with Dimethyl Ether|
CitationSivebaek, I., Sorenson, S., and Jakobsen, J., "Dimethyl Ether (DME) - Assessment of Viscosity Using the New Volatile Fuel Viscometer (VFVM)," SAE Technical Paper 2001-01-2013, 2001, https://doi.org/10.4271/2001-01-2013.
SAE 2001 Transactions Journal of Fuels and Lubricants
Number: V110-4; Published: 2002-09-15
Number: V110-4; Published: 2002-09-15
- Japar, S. M. Wallington, T. J. Richert, J. F. O. Ball, J. C. “The Atmospheric Chemistry of Oxygenated Fuel Additives: t-Butyl Alcohol, Dimethyl Ether and Methyl t-Butyl Ether.” International Journal of Chemical Kinetics 22 1257 1269 1990
- Hansen J. B. Voss, B. Joensen, F. Sigurdardottir, I. D. “Large Scale Manufacture of Dimethyl Ether-a New Alternative Diesel Fuel from Natural Gas.” SAE Paper 950063 1995
- Sorenson, S. C. Mikkelsen S-E. “Performance and Emissions of a 0.273 Liter Direct Injection Diesel Engine Fuelled with Neat Dimethyl Ether.” SAE Paper 950064 1995
- Christensen, R. Sorenson, S. C. Jensen, M. G. Hansen, K. F. “Engine Operation on Dimethyl Ether in a Naturally Aspirated, DI Diesel Engine.” SAE Paper 971665 1997
- Fleisch, T. McCarthy, C. Basu, A. Udovich, C. Charbonneau, P. Slodowske, W. Mikkelsen, S-E McCandless, J. “A New Clean Diesel Technology Demonstration of ULEV Emissions on a Navistar Diesel Engine Fuelled with Dimethyl Ether.” SAE Paper 950061 1995
- Kajitani, S. Konno, M. Rhee, K. T. “Engine Performance and Exhaust Characteristics of Direct Injection Diesel Engine Operated with DME.” SAE Paper 972973 1997
- Sivebaek, I.M. Sorenson S. C. “Dimethyl Ether (DME) and Other Low Boiling Point Fuels - Assessment of Lubricity Using the New Medium Frequency Pressurised Reciprocating Rig (MFPRR).” Proceeding of the 9 th Nordic Symposium on Tribology - NORDTRIB 2000 Porvoo, Finland June 11-14 2000
- Sivebaek, I.M. Sorenson S. C. “Dimethyl Ether (DME) - Assessment of Lubricity Using the Medium Frequency Pressurised Reciprocating Rig Version 2 (MFPRR2).” SAE Paper 2000-01-2970 2000
- Lacey P. I. Whalen M. V. Naegeli D. W. De La Cruz J. L. “Lubricity of Volatile Fuels for Compression Ignition Engines.” SAE Paper 2000-01-1804 2000
- Nielsen, K. Sorenson, S. C. “Lubricity Additives and Wear with DME in Diesel Injection Pumps.” ASME Paper 99-ICE-217 33-1 145 153 1999 Fall Technical Conference
- Lacey P. I. Mason R. L. “Fuel Lubricity: Statistical Analysis of Literature Data.” SAE Paper 2000-01-1917 2000
- “Standard Specifications and Operating Instructions for Glass Capillary Kinematic Viscometers.”
- “Glass Capillary Kinematic Viscometers - Specifications and Operating Instructions.” 1994
- Reid, R. C. Prausnitz, J. M. Poling, B. E. “The Properties of Gases and Liquids.” McGraw - Hill Fourth 1987
- DEA Mineraloel AG. Handbook
- Briant J. et al. “Rheological Properties of Lubricants.” 1989
- Einstein A. “Investigations on the theory of the Brownian movement.” Dover Publications 1956
- Goering C. E. et al. “Fuel Properties of Eleven Vegetable Oils.” Transactions of the ASAE 1982 1472 1483
- ISO Standard 12156 “Diesel Fuel- Assessment of Lubricity using the High-Frequency Reciprocating Rig (HFRR)- Ref. No. ISO 12156-1 and 2: 1997 (E) 1997