基于响应面法的船用柴油机燃油消耗率与排放性能分析  

Analysis on Fuel Consumption Rate and Emission Performance of Marine Diesel Engine Based on Response Surface Method

作　　者：刘洋[1] LIU Yang(Xi'an Aeronautical Polytechnic Institute,Xi'an 710089)

机构地区：[1]西安航空职业技术学院

出　　处：《舰船电子工程》2019年第6期138-141,共4页Ship Electronic Engineering

基　　金：西安航空职业技术学院高端制造中心采购项目(编号:WDZB2018-398)资助

摘　　要：为了研究各海拔条件下匹配EGR和VNT系统的柴油机的排放性能,选择Minitab软件并通过Box-Behnken设计方法测试动力性参数的转矩,分析两种典型工况的燃油消耗率并以烟度和NOx比排放作为响应参数。采用逐步回归法来完成因子和响应关系的二阶多项式拟合,获得两种工况条件下每个响应以因子实际值的回归模型。响应模型进行方差p值都在0.001以下,二阶响应模型都满足显著性条件。R2、R2adj、R2pred值都高于0.91,同时R2pred和R2差值都在0.2以内,所有响应曲面模型都能获得一致的测试结果并达到相同的预测能力。In order to study the emission performance of diesel engines matching EGR and VNT systems at various altitudes,Minitab software is selected and the torque of the dynamic parameters is tested by box-behnken design method.The fuel consumption rate of the two typical working conditions is analyzed and the emission of smoke and NOx ratio is taken as the response parameters.Stepwise regression method is used to fit the second-order polynomial of the relationship between factors and response.The variance p values of the response model are all below 0.001,and the second-order response model meets the significance condition.R2、R2 adj、R2 pred values are all higher than 0.91,and the difference between R2 pred and R2 is within 0.2.All response surface models can obtain consistent test results and achieve the same prediction ability.

关 键 词：柴油机 燃油消耗率 排气再循环 响应面法 

分 类 号：TK422[动力工程及工程热物理—动力机械及工程]