Use of dimethyl ether (DME) as a diesel fuel alternative has been increased due to the unique combustion characteristics of this oxygenated fuel. We have investigated performance and combustion characteristics of a naturally aspirated diesel engine using DME as the main fuel. In the experimental part of this work, OM314 direct-injection diesel engine was used as a base engine. A comprehensive full cycle was coupled with a multizone combustion model to simulate performance characteristics of the engine. Results of the volumetric efficiency showed that the highest brake torque was achievable in midspeed range. The power speed diagram showed that the brake torque tended to be much higher for diesel fuel than for DME when the engine speed was less than 1900 rpm. However, in engine speeds higher than 1900 rpm, brake torque in DME mode of operation was larger. Calculated emission results also suggested that negligible soot is produced in DME mode operation.

Issue Section:
Internal Combustion Engines
Keywords:
combustion, diesel engines, dimethyl ether, multizone combustion model, emissions, performance, and modeling of diesel engine
Topics:
Combustion, Cylinders, Diesel engines, Engines, Fuels, Pressure, Torque, Soot, Diesel, Emissions, Modeling, Ethers (Class of compounds), Stress, Brakes, Temperature, Experimental analysis
1.
Fleisch
,
T.
,
McCarthy
,
C.
,
Basu
,
A.
,
Udovich
,
C.
,
Charbonneau
,
P.
,
Slodowske
,
W.
,
Mikkelsen
,
S.
, and
McCandless
,
J.
, 1995, “
A New Clean Diesel Technology: Demonstration of ULEV Emissions on a Navistar Diesel Engine Fueled With Dimethyl Ether
,” SAE Technical Paper No. 950061.
2.
Sorenson
,
S. C.
, and
Mikkelsen
,
S.
, 1995, “
Performance and Emissions of a 0. 273 liter DI Diesel Engine Fuelled With Neat Dimethyl Ether
,” SAE Technical Paper No. 950064.
3.
Kapus
,
P.
, and
Cartellieri
,
W.
, 1995, “
ULEV Potential of a DI/TCI Diesel Passenger Car Engine Operated on Dimethyl Ether
,” SAE Paper No. 952754.
4.
Kajitani
,
S.
,
Chen
,
Z. L.
,
Konno
,
M.
, and
Rhee
,
K. T.
, 1997, “
Engine Performance and Exhaust Characteristics of Direct Injection Diesel Engine Operated With DME
,” SAE Paper No. 972973.
5.
Mikkelsen
,
S.
,
Hansen
,
J.
, and
Sorenson
,
S.
, 1996, “
Dimethyl Ether as an Alternate Fuel for Diesel Engines
,”
Application of Power Train and Fuel Technologies to Meet Emission Standards
,
J.
Mardell
,
M.
Parsons
,
J.
Read
, and
D.
Lemon
, eds.,
Institute of Mechanical Engineers
,
Bury St. Edmunds, UK
.
6.
Lapp
,
G.
,
Waite
,
C.
,
Tavakoli
,
J.
, and
Wachs
,
I.
, 2006, “
Molecular Engineering of Multicomponent Supported Metal Oxide Catalyst for Selective Oxidation of CH3OH to (CH3O)2CH2
,”
Proceedings of the Operando-II Conference
, Toledo, Spain.
7.
Barillas
,
K.
,
Gross
,
J.
,
Tavakoli
,
J.
, and
Wachs
,
I. E.
, 2003, “
Selective Oxidation of Methanol to Dimethoxymethane
,”
226th ACS National Meeting
, New York.
8.
Gui
,
B.
,
Wah Leung
,
C.
,
Xiao
,
J.
, and
Zhao
,
L.
, 2004, “
Modelling Study on the Combustion and Emissions Characteristics of a Light-Duty Di Diesel Engine Fueled With Dimethyl Ether (DME) Using a Detailed Chemical Kinetics Mechanism
,”
SAE J.
0036-066X,
1
, pp.
1839
–
1846
.
9.
Gray
,
C.
, and
Webster
,
G.
, 2001, “
A Study of Dimethyl Ether (DME) as an Alternative Fuel for Diesel Engine Applications
,” Advanced Engine Technology Ltd., Paper No. TP 13788E.
10.
Longbao
,
Z.
,
Hewu
,
W.
,
Deming
,
J.
, and
Zuohua
,
H.
, 1999, “
Study of Performance and Combustion Characteristics of a DME-Fueled Light-Duty Direct-Injection Diesel Engine
,” SAE Paper No. 1999-01-3669.
11.
Savadkohi
,
L.
,
Sohrabi
,
A.
, and
Babei
,
R.
, 2007, “
Research and Assessment of Applying Dimethyl Ether (DME) Extracted From Natural Gas (NG) on Diesel Engine as a Clean Fuel
,”
Int. J. Eng.
1025-2495,
20
(
2
), pp.
193
–
201
.
12.
Hiroyasu
,
H.
,
Kadota
,
T.
, and
Arai
,
M.
, 1983, “
Development and Use of a Spray Combustion Modeling to Predict Diesel Engine Efficiency and Pollutant Emissions—Part 1: Combustion Modeling
,”
Bull. JSME
0021-3764,
26
, pp.
569
–
575
.
Crossref
Search ADS
 
13.
Kouremenson
,
D. A.
,
Rakopoulos
,
C. D.
, and
Hountalas
,
D. T.
, 1997, “
Multi Zone Combustion Modeling for the Prediction of Pollutants Emissions and Performance of DI Diesel Engines
,” SAE Paper No. 970635.
14.
Meng
,
X.
,
Jiang
,
Z.
,
Wang
,
X.
, and
Jiang
,
D.
, 2004, “
Quasi Dimensional Multizone Combustion Model for Direct Injection Engines Fueled With DME
,”
Proc. Inst. Mech. Eng., Part D (J. Automob. Eng.)
0954-4070,
218
, pp.
315
–
322
.
Crossref
Search ADS
 
15.
Cui
,
Y.
,
Deng
,
K.
, and
Wu
,
J.
, 2001, “
A Direct Injection Diesel Combustion Model for Use in Transient Condition Analysis
,”
Proc. Inst. Mech. Eng., Part D (J. Automob. Eng.)
0954-4070,
215
, pp.
995
–
1004
.
Crossref
Search ADS
 
16.
Woschni
,
G.
, 1967, “
Universally Applicable Equation for the Instantaneous Heat Transfer Coefficient in the Internal Combustion Engine
,” SAE Paper No. 670931.
17.
Heywood
,
J. B.
, 1988,
Internal Combustion Engine Fundamentals
,
McGraw-Hill
,
New York
.
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