Dimethyl Ether in Diesel Fuel Injection Systems

Sorenson, Spencer C.; Glensvig, Michael; Abata, Duane L.

doi:10.4271/981159

Cited by 65 publications

(41 citation statements)

References 12 publications

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“…A loss of pressure across the valve seat reduces the pressure drop across the nozzle holes which, in turn, reduces the velocity of the injected spray. (iii) Pressure oscillations and residual pressure in the injection line: After injection, DME exhibits larger pressure oscillations and a higher residual pressure in the injection line between the fuel pump and the injector, compared to diesel fuel [10]. The reason for the larger pressure oscillations with DME is believed to be its higher compressibility compared to diesel.…”

Section: Flow Phenomena In the Injector Nozzlementioning

confidence: 99%

“…(iii) Low modulus of elasticity: Lower than that of diesel fuel, with the difference being greatest at lower pressures. Thus, the compressibility of DME is usually four to six times higher than that of diesel in a closed system and the compression work of the fuel pump for DME is greater than it is for diesel fuel by up to 10% in an open system [10].…”

Section: Disadvantagesmentioning

confidence: 99%

“…The key properties of DME and diesel fuel are shown in Table 1 [9,10]. In addition to the advantages above, it has a low carbon-to-hydrogen ratio (C:H) with a chemical formula of CH 3 -O-CH 3 as shown in Fig.…”

Section: Dme Propertiesmentioning

confidence: 99%

“…Investigations into the spray characteristics of DME have been carried out by various groups [9,10,19,23,27,28]. Wakai et al [27] performed experiments using a Schlieren optical system on a DME spray injected by means of a diesel injector into a vessel in the low-to middle-pressure range of 0.1-1.5 MPa.…”

Section: Spray Characteristicsmentioning

confidence: 99%

“…Wakai et al [27] performed experiments using a Schlieren optical system on a DME spray injected by means of a diesel injector into a vessel in the low-to middle-pressure range of 0.1-1.5 MPa. Sorenson et al [10] studied highpressure liquid DME injection into a nitrogen environment at temperatures <413 K (40°C) and pressures of 1.5, 2.5, 4.0 and 5.5 MPa, using a lubricity additive to the fuel. Teng et al [11] analysed the hydrodynamic behaviour of a DME spray in a DI diesel engine cylinder by referring to the investigations carried out by Glensvig et al [28] and Sorenson et al [10].…”

Section: Spray Characteristicsmentioning

confidence: 99%

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The potential of di-methyl ether (DME) as an alternative fuel for compression-ignition engines: A review

Arcoumanis

Bae

Crookes

et al. 2008

Fuel

909

412

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Citation: Arcoumanis, C., Bae, C., Crookes, R. and Kinoshita, E. (2008). The potential of di-methyl ether (DME) as an alternative fuel for compression-ignition engines: A review. Fuel, 87(7), pp. 1014-1030. doi: 10.1016/j.fuel.2007.06.007 This is the accepted version of the paper.This version of the publication may differ from the final published version. Permanent AbstractThis paper reviews the properties and application of di-methyl ether (DME) as a candidate fuel for compression-ignition engines. DME is produced by the conversion of various feedstock such as natural gas, coal, oil residues and bio-mass. To determine the technical feasibility of DME, the review compares its key properties with those of diesel fuel that are relevant to this application. DME's diesel engine-compatible properties are its high cetane number and low auto-ignition temperature. In addition, its simple chemical structure and high oxygen content result in soot-free combustion in engines. Fuel injection of DME can be achieved through both conventional mechanical and current common-rail systems but requires slight modification of the standard system to prevent corrosion and overcome low lubricity. The spray characteristics of DME enable its application to compression-ignition engines despite some differences in its properties such as easier evaporation and lower density. Overall, the low particulate matter production of DME provides adequate justification for its consideration as a candidate fuel in compression-ignition engines. Recent research and development shows comparable output performance to a diesel fuel led engine but with lower particulate emissions. NO x emissions from DME-fuelled engines can meet future regulations with high exhaust gas recirculation in combination with a lean NO x trap. Although more development work has focused on medium or heavy-duty engines, this paper provides a comprehensive review of the technical feasibility of DME as a candidate fuel for environmentally-friendly compression-ignition engines independent of size or application.

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Section: Flow Phenomena In the Injector Nozzlementioning

confidence: 99%

Section: Disadvantagesmentioning

confidence: 99%

Section: Dme Propertiesmentioning

confidence: 99%