| Affiliation: | HU Liangjun1,*,YANG Ce1,SUN Harold2,ZHANG Jizhong3,and LAI Mingchia4 1 School of Mechanical Engineering,Beijing Institute of Technology,Beijing 100081,China 2 Ford Motor Company,Michigan,48124 USA 3 National Key Laboratory of Diesel Engine Turbocharging Technology,Datong 037036,China 4 Wayne State University,48122 USA |
| Abstract: | Variable nozzle turbine (VNT) has become a popular variable geometry turbine (VGT) technology for the diesel engine application. Nozzle clearance, which can't be avoided on the hub and shroud side of the VNT turbine due to the pivoting stators, can lead to turbine performance deterioration. However, its mechanism is still not clear. In this paper, numerical investigation, which is validated by experiment, is carried out to study the mechanism of the nozzle clearance's effect on the turbine performance. Firs... |
