DME部分预混压燃与缸内直喷复合燃烧的研究  

Study onCombustion Characteristics of Partial Premixed Charge Compression Ignition-Direct Injection Engine Fueled with Dimethyl Ether

作　　者：李维[1] 周龙宝[2] 汪映[2] 马骏[1] 

机构地区：[1]西京学院汽车学院,陕西西安710123 [2]西安交通大学能动学院,陕西西安710049

出　　处：《重庆交通大学学报（自然科学版）》2010年第3期480-483,共4页Journal of Chongqing Jiaotong University(Natural Science)

基　　金：国家自然科学基金资助项目(50706038)

摘　　要：在单缸二甲醚发动机上开展了DME部分预混压燃与缸内直喷混合燃烧(PCCI-DI)特性的研究。结果表明:DME PCCI-DI发动机具有较低的最高爆发压力和压力升高率。PCCI-DI DME发动机燃烧过程也表现出明显的两阶段放热特点,和HCCI DME发动机相比,两个放热峰值有所下降,第1个放热峰值位置基本不变,第2个放热峰值后移到上止点略后位置。Experimental investigation on the combustion characteristics of PCCI-DI combustion by the partial pilot DME from the intake pipe is carried out.Results indicate that the engine has lower peak cylinder pressure and lesser rise rate of pressure.PCCI-DI DME engine also shows an obvious two-stage heat-release characteristic.Compared with HCCI DME engine,the peak values of two heat-release stages are reduced： the position of the first peak has almost no change and the position of the second peak shifts to the position near after TDC.

关 键 词：PCCI 直喷 二甲醚 燃烧特性 

分 类 号：TK42[动力工程及工程热物理—动力机械及工程]