Abstract
This study was computationally investigated how DME autoignition reactivity is affected by EGR and intakepressure boost over various engine speed. CHEMKIN-PRO was used as a solver. Autoignition reactivity was mainly studied using contribution matrix. Investigations concentrate on their effects on variations of autoignition characteristics in-detail including reaction rates of dominant reactions. EGR addition results the increase of the burn duration by lowering reaction rates. Combustion timings were very sensitive to boost pressure which enhances the reactivity of intermediate species but burn durations dominantly rely on the EGR addition. Also, high engine speed under EGR addition increases the burn duration greatly. Finally, substantial reduction of peak PRR by controlling LTHR can be obtained through the combination of EGR and boost pressure over engine speeds at high load operation.
| Original language | English |
|---|---|
| Title of host publication | Energy Procedia |
| Publisher | Elsevier Ltd |
| Pages | 1577-1580 |
| Number of pages | 4 |
| Volume | 61 |
| DOIs | |
| Publication status | Published - 2014 |
| Event | 6th International Conference on Applied Energy, ICAE 2014 - Taipei, Taiwan, Province of China Duration: 2014 May 30 → 2014 Jun 2 |
Other
| Other | 6th International Conference on Applied Energy, ICAE 2014 |
|---|---|
| Country | Taiwan, Province of China |
| City | Taipei |
| Period | 14/5/30 → 14/6/2 |
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Keywords
- Autoignition
- Boost
- Di-methyl ether
- Engine speed
- Exhaust gas recirculation
- Homogeneous charge compression ignition
ASJC Scopus subject areas
- Energy(all)
Cite this
A computational study of the effects of initial conditions on DME autoignition characteristics. / Lim, Ocktaeck; Jamsran, Narankhuu; Iida, Norimasa.
Energy Procedia. Vol. 61 Elsevier Ltd, 2014. p. 1577-1580.Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
}
TY - GEN
T1 - A computational study of the effects of initial conditions on DME autoignition characteristics
AU - Lim, Ocktaeck
AU - Jamsran, Narankhuu
AU - Iida, Norimasa
PY - 2014
Y1 - 2014
N2 - This study was computationally investigated how DME autoignition reactivity is affected by EGR and intakepressure boost over various engine speed. CHEMKIN-PRO was used as a solver. Autoignition reactivity was mainly studied using contribution matrix. Investigations concentrate on their effects on variations of autoignition characteristics in-detail including reaction rates of dominant reactions. EGR addition results the increase of the burn duration by lowering reaction rates. Combustion timings were very sensitive to boost pressure which enhances the reactivity of intermediate species but burn durations dominantly rely on the EGR addition. Also, high engine speed under EGR addition increases the burn duration greatly. Finally, substantial reduction of peak PRR by controlling LTHR can be obtained through the combination of EGR and boost pressure over engine speeds at high load operation.
AB - This study was computationally investigated how DME autoignition reactivity is affected by EGR and intakepressure boost over various engine speed. CHEMKIN-PRO was used as a solver. Autoignition reactivity was mainly studied using contribution matrix. Investigations concentrate on their effects on variations of autoignition characteristics in-detail including reaction rates of dominant reactions. EGR addition results the increase of the burn duration by lowering reaction rates. Combustion timings were very sensitive to boost pressure which enhances the reactivity of intermediate species but burn durations dominantly rely on the EGR addition. Also, high engine speed under EGR addition increases the burn duration greatly. Finally, substantial reduction of peak PRR by controlling LTHR can be obtained through the combination of EGR and boost pressure over engine speeds at high load operation.
KW - Autoignition
KW - Boost
KW - Di-methyl ether
KW - Engine speed
KW - Exhaust gas recirculation
KW - Homogeneous charge compression ignition
UR - http://www.scopus.com/inward/record.url?scp=84922375951&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84922375951&partnerID=8YFLogxK
U2 - 10.1016/j.egypro.2014.12.175
DO - 10.1016/j.egypro.2014.12.175
M3 - Conference contribution
AN - SCOPUS:84922375951
VL - 61
SP - 1577
EP - 1580
BT - Energy Procedia
PB - Elsevier Ltd
ER -