Characterization of the viscosity of blends of dimethyl ether with various fuels and additives

Shirish Bhide, David Morris, Jonathan Leroux, Kimberly S. Wain, Joseph M. Perez, André L. Boehman

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Dimethyl ether (DME) is a potential ultra clean diesel fuel. Dimethyl ether burns without producing the smoke associated with diesel combustion and can be manufactured from synthesis gas or methanol. However, DME has a low viscosity compared to diesel fuel and has insufficient lubricity to prevent excessive wear in fuel injection systems. One strategy to utilize DME is to blend it with diesel fuel to obtain cleaner burning fuels that retain satisfactory fuel properties. In the present work, the viscosity of blends of DME and various fuels and additives was characterized, including a federal low sulfur fuel, soybean oil, biodiesel and various lubricity additives, over a range of blend ratios. A methodology was developed to utilize a high pressure capillary viscometer to measure the viscosity of pure DM E and blends of DME and other compounds in varying proportions and at pressures up to 3500 psig. While DME is miscible in diesel fuel at any mixture fraction when the blend is held under pressures of 75 psi or above, the viscosity of the blends is below the ASTM diesel fuel specification for even a 25 wt.% blend of DME in diesel fuel. None of the additives or fuels provides adequate viscosity when blended with DME unless the blend contains less than 50% DME. Viscosity, rather than lubricity, may be the limiting factor in utilizing DME.

Original languageEnglish (US)
Title of host publicationASME 2003 Internal Combustion Engine Division Spring Technical Conference, ICES2003
Pages207-215
Number of pages9
DOIs
StatePublished - Dec 1 2003
EventASME 2003 Internal Combustion Engine Division Spring Technical Conference, ICES2003 - Salzburg, Austria
Duration: May 11 2003May 14 2003

Publication series

NameProceedings of the Spring Technical Conference of the ASME Internal Combustion Engine Division
ISSN (Print)1529-6598

Other

OtherASME 2003 Internal Combustion Engine Division Spring Technical Conference, ICES2003
CountryAustria
CitySalzburg
Period5/11/035/14/03

All Science Journal Classification (ASJC) codes

  • Engineering(all)

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    Bhide, S., Morris, D., Leroux, J., Wain, K. S., Perez, J. M., & Boehman, A. L. (2003). Characterization of the viscosity of blends of dimethyl ether with various fuels and additives. In ASME 2003 Internal Combustion Engine Division Spring Technical Conference, ICES2003 (pp. 207-215). (Proceedings of the Spring Technical Conference of the ASME Internal Combustion Engine Division). https://doi.org/10.1115/ICES2003-0658