METHOD OF OPERATING TURBOCHARGER INCLUDING VARIABLE GEOMETRY TURBINE WITH NOZZLE RING AND PLURAL GUIDE VANES WITHIN INLET PASSAGE OF TURBINE

摘要

PROBLEM TO BE SOLVED: To provide a method for controlling a variable geometry turbine of a turbocharger to increase the temperature of the exhaust gas delivered to an after-treatment system.SOLUTION: In one form, the method includes reducing a fluid flow area to a turbine 12 to a normal size or less, and bypassing a portion of the exhaust gas around a plurality of guide vanes 10.