基于PFI进气方式V型汽油机热力学试验研究  

Thermodynamic Analysis of V Gasoline Engine Based on PFI Intake Way

作　　者：刘义强 朱允 张慧君 方会咏 赵春燕 王瑞平 

机构地区：[1]宁波吉利罗佑发动机零部件有限公司,宁波315336 [2]浙江吉利罗佑发动机有限公司,宁波315336

出　　处：《内燃机工程》2016年第6期151-155,163,共6页Chinese Internal Combustion Engine Engineering

摘　　要：研究了不同的控制参数对发动机燃烧特性的影响情况。通过对进气道及配气正时的研究,分析了影响V型汽油机燃烧稳定性和燃烧均匀性的主要因素。在部分负荷工况和怠速工况,通过对汽车电子控制单元(ECU)控制参数的调整进行试验研究。试验结果表明:点火角、过量空气系数λ、可变气门(VVT)角度对燃烧滞燃期和燃烧稳定性均有明显的影响,通过合理地调整ECU控制参数可改善发动机的燃烧特性;对于V型发动机存在两侧进气不均的情况,可通过优化标定软件及其他标定手段改善该现象。The influence of different control parameters on engine combustion characteristics was studied. An analysis of the main factors influencing V-type gasoline engine combustion stability and uniformity was made based on a research on intake port and valve timing. An experimental research was then carried out under part load and idle conditions by adjusting ECU control parameters. The experiment shows that ignition timing, air to fuel ratio and VVT timing apparently influence combustion delay and combustion stability. A reasonable adjustment of ECU control parameters can improve engine combustion. The intake inequality between both sides of the V-type engine can be improved by means of optimizing the calibration software and some calibration methods.

关 键 词：内燃机 V型汽油机 喷射策略 燃烧稳定性 燃烧均匀性 

分 类 号：TK411.1[动力工程及工程热物理—动力机械及工程]