小型直喷柴油机循环变动特性分析  

The Study on Cycle to Cycle Variation of a Small DI Diesel Engine

作　　者：徐秀兰[1] 阎伟[1] 张元毅[1] 杨滨 刘德华[1] 

机构地区：[1]山东工业大学动力工程系

出　　处：《内燃机学报》1998年第3期285-291,共7页Transactions of Csice

摘　　要：本文主要研究采用低旋流进气、浅Ｗ型燃烧系统的ＳＤ２１００直喷柴油机的循环变动。用平均指示压力ｐｉ、最大爆发压力ｐｚ、最大爆发压力出现时刻φＡ、最大压力升高率出现时刻φＢ等指标进行评价。对柴油机多种工况进行分析，结果表明，由于主要采用空间混合方式燃烧，标定工况和最大扭矩工况时，燃烧比较粗暴，ｐｚ变动较大，燃烧时刻集中而适时，ｐｉ变动量小，动力性较好。全负荷特性和全负荷速度特性工况时，ｐｚ、φＡ和φＢ的循环变动都有各自的规律。通过对该机各工况参数进行相关分析，讨论了影响最大爆发压力变动的主要和次要因素，为降低其循环变动提供了依据。The characteristics of operating cyclic variations for low swirl shallow W type combustion system on SD2100 diesel engine are tested and measured.The cycle to cycle variation is expressed by four parameters: p z, p i, φ A,φ B in these experiments.The author analyses the various conditions of the diesel engine.The space mixed burned process makes the variation of p z large and the suit combustion time makes the variation of p i small on the rated and the maximum torque condition.The variations of p z, φ A,φ B have their own regular patterns on the load characteristics and full load performance.Meanwhile a regression analysis on various parameters in operating process of engine,the main and secondary factor impact the pressures are found and get ways to avoid them.

关 键 词：循环变动特性 浅W型燃烧系统 相关分析 柴油机 

分 类 号：TK421[动力工程及工程热物理—动力机械及工程]