柴油机全气缸取样技术存在的几个问题  

Some Problems within the Total Cylinder Sampling Technique for a Diesel Engine

作　　者：刘仪 刘巽俊[1] 白翎 

机构地区：[1]吉林工业大学

出　　处：《内燃机学报》1995年第3期237-243,共7页Transactions of Csice

基　　金：国家自然科学家基金

摘　　要：本文通过专门的试验或计算．对柴油机全气缸取样技术存在的几个问题进行了分析与讨论。这几个问题是：如何定义取样转角；执行机构延迟时间的分散性对取样控制精度的影响；微粒的壁面沉积；取样时刻缸内正常未燃燃油液滴对微粒、ＨＣ测试结果的影响；高转速下取样的可能性。Based on special tests and calculations, some technical problems within the total cylinder sampling technique for a diesel engine were analysed and discussed in this paper. These problemswere: how to define a sampling crankangle; the delay time dispersion of an actuator and its effect on the accuracy of sampling control; wall deposition of particulates; the effect of unburned fuel droplets existing in the combustion chamber at the dumping moment on the measurements of particulates and HC concentration; the possibility of sampling under high engine speed.

关 键 词：柴油机 取样转角 全气缸取样技术 气缸 

分 类 号：TK421.2[动力工程及工程热物理—动力机械及工程]