2013 Fiscal Year Final Research Report
Analyses of effects of molecukar structures and ingredients in biodiesel fuels on chemical and physical phases of diesel combustion
| Project/Area Number |
23510107
|
|---|
| Research Category |
Grant-in-Aid for Scientific Research (C)
|
| Allocation Type | Multi-year Fund |
|---|
| Section | 一般 |
|---|
| Research Field |
Environmental technology/Environmental materials
|
|---|
| Research Institution | Osaka Institute of Technology |
|---|
Principal Investigator |
|
|---|
| Co-Investigator(Kenkyū-buntansha) |
MASUYAMA Araki 大阪工業大学, 工学部, 教授 (30157218)
|
|---|
| Project Period (FY) |
2011 – 2013
|
| Keywords | バイオディーゼル燃料 / 着火特性 / ディーゼルエンジン / 噴霧燃焼 / 化学反応速度論 / 詳細化学反応モデル / 環境負荷低減 |
|---|
| Research Abstract |
Biodiesel fuels are the mixtures of fatty acid methyl esters. Computations using detailed chemical kinetic models indicate that for gas-phase fuels, the ignition delay times of fatty acid methyl esters are much shorter than those of alkanes with initial temperatures over 1000 K. On the contrary, engine operation tests indicate that for fuel sprays, the ignition delay times of alkanes are shorter than those of fatty acid methyl esters. The better ignition characteristics but the worse atomization and vaporization characteristics are a restriction against the improvement in combustion and exhaust-gas characteristics for diesel combustion using biodiesel fuels. Fuel design concepts should aim at improving the atomization and vaporization characteristics without deteriorating the ignition characteristics.
|
