发动机全可变配气参数多元回归耦合研究  

Engine Fully Variable Valve Parameters Coupling Study Based on Multiple Regression Analysis

作　　者：路勇[1] 何丰硕 李建 侯秀芹 吕坤 李博[1] 熊丽君 

机构地区：[1]哈尔滨工程大学动力与能源工程学院,黑龙江哈尔滨150001

出　　处：《北京理工大学学报》2018年第1期20-25,共6页Transactions of Beijing Institute of Technology

基　　金：国家自然科学基金资助项目(51579050)

摘　　要：基于柴油机仿真模型,依据正交实验原则仿真获得气阀运动参数耦合数据库,利用多元回归分析方法分析配气参数之间的耦合特性,获得气阀运动参数实际最优解.建立电液全可变发动机联合仿真模型验证实际最优解.联合仿真结果表明实际最优解比原优化值功率提高3.8%,在发动机性能提高的前提下,进排气阀平均速度分别降低31.1%和37.5%.获得的配气参数实际最优解可以满足电液系统的驱动能力,有效提高驱动效率.To obtain the optimum solution of valve running parameters,the coupling rules among valve parameters were analyzed based on a simulation model of four-cylinder diesel engine,the multivariate regression analysis method,and a valve parameter coupling data base by simulation orthogonal experiments.Further more,an electro-hydraulic fully variable valve model of the engine was built to verify the actual optimal solution.The combined simulation results show that,the optimal solution is improved by 3.8% than the original optimal power,and the average speed of inlet and outlet valve is decreased by 31.1% and 37.5% respectively in the premise of improving the performance of the engine.Finally,the optimal solution of the valve parameters obtained by the regression model satisfies the driving ability of electro-hydraulic driving system and improves the driving efficiency effectively.

关 键 词：发动机 配气参数 多元回归 耦合 

分 类 号：TK421.3[动力工程及工程热物理—动力机械及工程]