直喷式柴油机涡流室燃烧系统的模拟与试验研究  

Simulation and Experimental Research on Swirl Chamber Combustion System of DI Diesel Engine

作　　者：魏胜利[1] 杜宝国[1] 冯立岩[1] 冷先银[1] 隆武强[1] 

机构地区：[1]大连理工大学内燃机研究所,大连116023

出　　处：《内燃机工程》2008年第4期19-22,共4页Chinese Internal Combustion Engine Engineering

摘　　要：为改善直喷式柴油机缸内的喷雾分布特性及混合气形成质量,从加强燃烧室内的气流运动角度出发,提出了直喷式涡流室燃烧系统,应用AVL FIRE软件对缸内混合气形成过程进行了数值模拟研究,并在单缸四气门135柴油机上进行了初步性能试验。结果表明:直喷式涡流室燃烧系统能够有效提高缸内混合气均匀性,从而改善燃烧;使用4×0.36×150°油嘴在供油提前角为7°CA时要低于10°CA时的NOx和碳烟排放。In order to improve the fuel spray spatial distribution and the quality of mixture formation and enhance airflow movement in combustion chamber, a new swirl chamber combustion system was proposed, and the airflow movement was simulated using AVL FIRE software. Several different combustion chambers was investigated on a single cylinder 135 diesel engine with four valves. The results show that using this combustion system, the formation of homogeneous mixture is accelerated and the combustion is improved; the emissions of both NOx and soot at 7 ℃A of fuel supply advanced angle are lower than that of 10 ℃A when using the 4×0.36× 150° nozzle.

关 键 词：内燃机 柴油机 涡流室燃烧系统 燃烧室 碰撞喷雾 纵向涡流 

分 类 号：TK423.8[动力工程及工程热物理—动力机械及工程]