醇醚双燃料发动机均质压缩燃烧试验研究  

The Experimental Study on HCCI Mode of Diesel Engine Fueled with Methanol/Dimethyl Ether

作　　者：闫妍[1] 张煜盛 佘金平[2] 陈涌填[2] 孟忠伟[1] 

机构地区：[1]西华大学交通与汽车工程学院,四川成都610039 [2]华中科技大学能源动力工程学院

出　　处：《小型内燃机与摩托车》2014年第1期64-68,共5页Small Internal Combustion Engine and Motorcycle

基　　金：国家自然科学基金项目(20777023;51106130);四川省教育厅自然科学基金项目(10ZB078;12ZB138);西华大学重点科研项目(Z1120320;Z1120319)

摘　　要：以ZS195型直喷式柴油机为原型机,开展了进气道喷射醇醚混合燃料HCCI试验研究。试验研究结果表明,甲醇的添加能够抑制二甲醚(DME)低温反应,降低缸内最大爆发压力和燃烧温度,推后主燃烧反应时刻,解决二甲醚的过快和过早燃烧,可以有效调节HCCI着火时刻和扩展其运行工况。双燃料HCCI发动机的指示热效率最高可以达到49%左右,超过原柴油机10%。通过调节甲醇喷油量,可实现HCCI燃烧着火点可控以及扩展HCCI发动机运行负荷范围。The performances of the DME/methanol HCCI mode were studied by experiments. Experimental re- suits showed that with the addition of combustion inhibitor methanol, the dual-fuel HCCI mode process has changed. The addition of methanol can inhibit reactions at low temperature, reduce the maximum cylinder pressure and combustion temperature, postpone the moment of main combustion reaction, extend HCCI mode working range. Dual-fuel HCCI mode can reach the highest indicated thermal efficiency of about 49% ,by ad- justing the amount of methanol, the ignition time of HCCI combustion can be controlled and the operating load range extended.

关 键 词：二甲醚 甲醇 均质压燃 

分 类 号：TK421.5[动力工程及工程热物理—动力机械及工程]