基于最优化设计理论的配气凸轮升程误差分析  

Analysis of Valve-Train Cam Lift Error Based on Optimized Design Theory

作　　者：谢宗法[1] 金文斌[1] 张小印[1] 张承瑞[1] 曹心诚 朱琰[2] 

机构地区：[1]山东大学机械工程学院,济南250061 [2]济南轻骑摩托车股份有限公司

出　　处：《内燃机工程》2007年第5期71-74,共4页Chinese Internal Combustion Engine Engineering

基　　金：国家自然科学基金项目(50575129);山东省济南市科技攻关项目(041063)

摘　　要：以凸轮0°CaA基准线位置X1和0升程基准线位置X2为设计变量,以凸轮各实测点的升程误差Ri的平方和为目标函数,建立了最优化设计的数学模型,用最优化设计方法分析配气凸轮升程误差。通过实际计算表明:与"敏感点法"相比,用最优化设计方法求取的凸轮升程误差可准确地反映凸轮轮廓形状,使凸轮误差精度最大可提高37.9%。The position of the 0℃aA reference and 0 lift reference of a cam has an important influence on assessing valve-train cam lift error. Using the cam position of the 0 ℃aA reference Xland 0 lift reference X2 as the design variables and using the sum of squares of measured cam lift error Ri as objective function, a mathematical model of optimization was established. The cam lift error was analyzed by the optimization method. The calculation results indicat that the cam lift error calculated by the optimization method can more accurately reflect the cam contour shape comparing with the sensitive points method, and the assessment precision can improve by 37.9%.

关 键 词：内燃机 凸轮 测量基准 升程误差 误差分析 

分 类 号：TK402[动力工程及工程热物理—动力机械及工程]