发动机关键配气相位角的分析与优化  

Analysis and Optimization of Engine Critical Valve Timing Angle

作　　者：王兴旺[1] 王自勤[1] 田丰果[1] 陈家兑[1] 

机构地区：[1]贵州大学现代制造技术教育部重点实验室,贵州贵阳550025

出　　处：《机械设计与制造》2014年第11期165-167,172,共4页Machinery Design & Manufacture

基　　金：贵州省科学技术基金项目(黔科合J字[2011]2196号);贵州省工业攻关项目(黔科合GY字[2012]3004)

摘　　要：发动机的四个配气相位角中,排气提前角和进气晚关角最为重要。运用AVL BOOST软件建立了某款汽油发动机的数值仿真模型,根据台架实验数据对模型进行了标定。保持原气门重叠角和升程不变,按每5°CA的间隔分别对排气提前角和进气晚关角进行改变,研究不同排气提前角和进气晚关角对发动机不同转速扭矩和功率的影响规律,确定最佳的排气提前角和进气晚关角。经过优化发动机的最大扭矩提高了5.39N·M,最大功率提高了2.82kW。Exhaust advance angle and intake lag angle are the most important among engine＇s four valve timing angles. Using AVL BOOST software to establish a gasoline engine numerical simulation model and calibrate it with bench test data Keeping the valve overlap angle and lift invariant, changing the exhaust advance angle and intake lag angle respectively at each interval of 5~ CA, and researching the influence law about different exhaust advance angles and intake lag angles have the impact on the torque and power at different speed of engine, determining the best exhaust advance angle and intake lag angle. After optimization, the maximum torque of engine increased 5.39N·M, and maximum power increased 2.82kW.

关 键 词：汽油发动机 AVL BOOST软件 排气提前角 进气晚关角 优化 

分 类 号：TH16[机械工程—机械制造及自动化] TK42[动力工程及工程热物理—动力机械及工程]