车用涡轮增压器涡轮非稳态特性试验研究  

Experimental Investigation on Vehicular Turbocharger Turbine Characteristics under Unsteady Flow Condition

作　　者：于立国[1] 马朝臣[1] 施新[1] 张志强[1] 张强[1] 朱智富[1] 赵佳[2] 

机构地区：[1]北京理工大学机械与车辆工程学院,北京100081 [2]北京汽车研究总院,北京100176

出　　处：《内燃机工程》2010年第5期36-40,共5页Chinese Internal Combustion Engine Engineering

基　　金：国家自然科学基金项目(50676011)

摘　　要：分析并完善了车用涡轮增压器涡轮非稳态特性测量及计算的方法,在此方法的基础上,搭建了涡轮非稳态特性试验台,为涡轮的非稳态特性研究提供了一种试验研究手段。对某型号的涡轮与发动机在典型工况下匹配时的非稳态特性进行了试验研究,试验观察到了"涡轮非稳态特性圈"的现象,即涡轮的非稳态特性围绕着稳态特性形成了一个特性圈,对涡轮的非稳态特性进行了分析。Analyzed systematically measurement and calculation methods of unsteady characteristics for vehicular turbocharger turbine,the unsteady test rig was developed based on these methods,thus providing a experimental means for research of them.On this test rig,the unsteady characteristics of a turbine matched to engine under representative conditions were investigated.It is found that the unsteady characteristics form a loop around the steady characteristics appearing the known ＂close loop characteristics＂ phenomenon.Lastly,the unsteady characteristics obtained were discussed.

关 键 词：内燃机 涡轮增压器 涡轮 非稳态特性 试验台 脉冲发生器 测量方法 

分 类 号：TK412.8[动力工程及工程热物理—动力机械及工程]