中文摘要：

提出一种强制卷流燃烧室概念,即通过设计燃烧室的特殊结构从而促进燃烧室内气体卷流运动,达到加快油气混合速度的目的。使用AVL Fire软件对两种强制卷流燃烧室和一种传统燃烧室进行了仿真对比分析,计算结果表明两种强制卷流燃烧室均能够明显加快燃烧速度、提高燃烧效率;将新设计开发的双卷流燃烧室在单缸机试验平台上进行了试验验证,结果表明油耗率降低7.5%,主燃期缩短6.9%,从而验证了仿真计算过程的正确性和强制卷流燃烧室的有效性。

英文摘要：

A concept of forced swirl combustion chamber is proposed in this paper.It can be used to enhance the swirl flow intensity in cylinder and accelerate the rate of air-fuel mixture process by designing the special structure in combustion chamber.Combustion simulation using AVL Fire code was made in two types of forced swirl combustion chambers and one traditional combustion chamber.The simulated result shows that combustion rate and combustion efficiency are enhanced in two types of forced swirl combustion chambers.Verification was made in a single cylinder engine with double swirl combustion chamber.The test result shows that,comparing with the traditional combustion chamber,BSFC of the double swirl combustion chamber decreases by 7.5 percent,and main combustion duration decreases by 6.9 percent.The correctness of simulation and validity of forced swirl combustion chamber are confirmed.