摘要
本文提供了新型ＤＳＣＳ（双卷流燃烧系统）的结构和原理，其核心是在ＤＳ燃烧室内，燃油射流触脊、分裂并呈双卷流进行混合与燃烧。在自制的燃油喷雾模型试验装置上，采用油－油喷射技术，对燃烧室模型内的燃油射流流动过程进行高速摄影，并对多种试验方案的拍照结果进行分析。模型试验表明，ＤＳＣＳ中燃油射流流程可细分为４个阶段，采用了新机理、新理论进行混合与燃烧。单、多缸机试验表明ＤＳＣＳ节油率高，静、动载荷低，排温低，烟度低，具有较理想的放热规律，理论和应用都有良好的发展前景。
The principle and design of a new DSCS (double swirls combustion system) are provided in this paper.Its essence is that fuel jet (spray) collides with the ridge of DS combustion chamber,then splits and forms double swirls for fuel air mixing and burning.This test study for mixing mechanism of fuel air was completed in the modeling test apparatus for fuel jet,that was developed by authors.Modeling experiments indicate that the flow process of fuel jet can be divided into four phases in detail.Mixing and burning can be carried out with new principle.The tests of the single cylinder diesel engine show that DSCS have advantages of high fuel economy,lower dead and shock load,lower exhaust temperature,lower smoke,and better heat release pattern.So there is a good prospect of development in the theory and application fields of DSCS.
出处
《内燃机学报》
EI
CAS
CSCD
北大核心
1998年第4期446-452,共7页
Transactions of Csice
关键词
柴油机
双卷流燃烧系统
燃烧
放热率
Diesel engine,Double swirls combustion system,Mixing burning,Heat release rate
