The research on the fuel composition of the ultra lean mixture for C.I.engines

直喷发动机超稀混合气燃料成分的研究

• 批准号: 09650221
• 负责人: KAJITANI Shuichi
• 金额: $ 0.32万
• 依托单位: IBARAKI UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 1997
• 资助国家: 日本
• 起止时间: 1997 至 1998
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-09650221/
• 关键词: INTERNAL COMBUSTION ENGINE; COMPRESSION IGNTION ENGINE; LEAN BURN; AUTO IGNITION; FUEL COMPOSITION; Dimethyl-Ether; OZONE; IGNITION LAG; 圧縮点大機関; シメチル・エーテル; 燃料設計; 自着火時期制御; DME; 無煙燃焼; 活性化空気

The characteristic of the fuel as a candidate was examined by the use of actual compression ignition engine, before the fuel composition was examined. The fuel as a candidate is Dimethyl-Ether(DME). DME burns in the engine with soot free emission and low hydrocarbon concentration , however NOx were relatively high. DME as a fuel shows low auto ignition temperature. Using the characteristics of DME, it mixed with propane. It was confirmed that again, the blending fuel had transparently and been stabilized, It was confirmed that the auto ignition temperature rose, when propane is blended. Next, the technique which added the ozone in the air for the auto ignition time control was examined. The lowering of the auto ignition temperature can expect it with the increase in the burning rate, because the ozone in the air decomposes the part of the fuel with fuel and that it mixes it. The increase in the about 10% of burning velocity when the ozone concentration was at 10000ppm. The engine experiment was conducted and confirmed the effect of ozone on the changes in the pattern of rate of heat release curve.

在检查燃料成分之前，通过使用实际的压燃式发动机来检查作为候选燃料的特性。候选燃料是二甲醚（DME）。二甲醚在发动机中燃烧，无碳烟排放，碳氢化合物浓度低，但NOx相对较高。 DME 作为燃料显示出较低的自燃温度。利用二甲醚的特性，与丙烷混合。再次确认混合燃料已透明且稳定。确认当混合丙烷时自燃温度升高。接下来，研究了在空气中添加臭氧以控制自燃时间的技术。随着燃烧速度的增加，自燃温度的降低是可以预期的，因为空气中的臭氧分解了部分燃料并与燃料混合。当臭氧浓度为10000ppm时，燃烧速度增加约10%。进行了发动机实验并证实了臭氧对放热率曲线模式变化的影响。

项目成果

S.Kajitani,L.Z.Chen,M.Alam,K.T.Rhee: "Engine Performance and Exhaust gas characteristics of C.I.Engine operated with DME-Propane blended Fuel" SAE 982536 Alternotive Fuel (SAE SP-1391 に再録). 243-253 (1998)

S.Kajitani、L.Z.Chen、M.Alam、K.T.Rhee：“使用 DME-丙烷混合燃料运行的 C.I. 发动机的发动机性能和废气特性”SAE 982536 替代燃料（重印于 SAE SP-1391）（1998 年）。 ）

Chen LZ,S.Kajitani,K.Minegish,M.Oguma: "Engine Performance and Exhaust gas Characteristics of C.I.Engine operated with DME Blended Gas Oil Fuel" SAE 982538. 1-9 (1998)

Chen LZ,S.Kajitani,K.Minegish,M.Oguma：“使用 DME 混合柴油燃料运行的 C.I. 发动机的发动机性能和废气特性”SAE 982538. 1-9 (1998)

陳 之立、金野満、梶谷修一: "ジメチルエーテル(DME)を燃料とした圧縮点火直接噴射機関の性能と排気特性-レトロフィト時の機関性能及び排気特性-" 第14回 内燃機関シンポジューム講演論文集. 235〜240 (1997)

陈志立、绀野充、梶谷秀一：“以二甲醚（DME）为燃料的压燃式直喷发动机的性能和排气特性——改装期间的发动机性能和排气特性”第十四届内燃机学术研讨会论文集.235-240 (1997)

S.Kajitani, Y.Okamoto, K.Onodera, K.T.Rhee: "Activated-air-method for controling ignition delay" The 15^<th> Internal Combustion Engine Symposium. (in progress).

S.Kajitani、Y.Okamoto、K.Onodera、K.T.Rhee：“控制点火延迟的激活空气方法”第 15 届内燃机研讨会。

陳之立、金野満、梶谷修一: "ジメチルエーテル(DME)を燃料とした圧縮点火直接噴射機関の性能と排気特性(第1報レトロフィント時の機関性能及び排気特性)" 日本機械学会論文集B編. 64巻627号. 383-388 (1998)

Chen、Mitsuru Konno、Shuichi Kajitani：“使用二甲醚 (DME) 作为燃料的压燃式直喷发动机的性能和排气特性（第一份报告，改装过程中的发动机性能和排气特性）” 日本机械工程师学会汇刊， B 卷。第 64 卷，第 627 期。383-388 (1998)