柴油深度混合改善均质引燃排放的试验研究  

Experimental Research of the Improvement on Emission Performance of Homogeneous Charge Induced Ignition by Thorough Diesel Mixing

作　　者：李思远[1] 孙柯[1] 杨滨[1] 李国祥[1] LI Siyuan;SUN Ke;YANG Bin;LI Guoxiang(School of Energy and Power Engineering,Shandong University,Jinan 250061,China)

机构地区：[1]山东大学能源与动力工程学院,山东济南250061

出　　处：《内燃机与动力装置》2018年第2期32-35,62,共5页Internal Combustion Engine & Powerplant

摘　　要：在一台六缸柴油机上使用汽、柴油两种燃料实现均质引燃,通过将柴油主喷时刻大幅提前,研究柴油深度混合对均质引燃的影响。试验结果表明:柴油深度混合可以优化均质引燃模式的燃烧状况,柴油主喷时刻提前至上止点前40°曲轴转角时,缸内燃烧近似均质压燃,在保持高有效热效率的同时,最大压升率也控制在0.59MPa/(°)的合适水平;柴油深度混合可以显著改善均质引燃模式的排放,柴油主喷时刻提前至上止点前40°曲轴转角时,NOx排放低至0.39 g/(k W·h),同时炭烟(Soot)则近零排放。Homogeneous charge induced ignition（ HCII） using gasoline-diesel dual fuel was achieved on a sixcylinder diesel engine in this passage. The influence of diesel mixingthoroughness on HCII was studied specifically through significantly advancing the diesel main injection time. Experiment results show that diesel mixingcan optimize the combustion process of HCII. As diesel main injection time advanced to 40° BTDC,the combustion progress largely resembled homogeneous charge compressed ignition. The maximum pressure rising rate can be controlled at appropriately 0. 59 MPa/（ °） while the effective thermal efficiency was maintained at high level. Thorough diesel mixing can also improve the emission performance of HCII significantly. As diesel main injection time advanced to 40° BTDC,NOxemission reduced to 0. 39 g/（ k W·h） while the emission of Soot was almost zero.

关 键 词：双燃料 柴油主喷时刻 均质引燃 排放特性 

分 类 号：TK423.8[动力工程及工程热物理—动力机械及工程] TK421.5