涡轮增压器压气机叶轮与压壳相对偏心对性能的影响  

Relative Location between Impeller and Scroll on Turbocharger Compressor Performance

作　　者：张海佳 张宸宇 蒋荔荔 侯尧琪 ZHANG Hai-jia;ZHANG Chen-yu;JIANG Li-li;HOU Yao-qi(Weifu High-Technology Group Co.,Ltd.,Wuxi 214000,China)

机构地区：[1]无锡威孚高科技集团股份有限公司,无锡214000

出　　处：《内燃机与配件》2021年第24期7-9,共3页Internal Combustion Engine & Parts

摘　　要：涡轮增压器的压壳和压叶轮在批产时会发生一致性差异,原因包括在铸造开模过程偏差,不同供应商生产差异,及装配过程产生偏差,这些均会导致压轮及压壳在一定程度上相对位置有所偏移。本文对涡轮增压器偏心、偏转问题进行了模型建立,评估不同方向的偏心、偏转对增压器压端性能的影响。通过CFD仿真分析结果表明:偏心和偏转情况均会使性能产生不同程度的下降,尤其是在低转速时更加明显。Due to the deviation in casting mold process,different suppliers,and deviation in assembly process,there's some consistency issue in the manufacture of compressor scroll and impeller,this will result in the axis offset between the compressor scroll and the impeller.The model are created to simulate the offset and deflection,and the CFD analysis was done to evaluate and quantize the influence of offset and deflection in different directions.The CFD results shows that the offset and deflection will have a negative effect on performance,especially at low speed region.

关 键 词：涡轮增压器 压轮 压壳 偏心 

分 类 号：U463.6[机械工程—车辆工程]