タービンの入口通路内にノズルリングと複数の案内ベーンとを有する可変幾何学的形態タービンを有するターボ過給機を作動させる方法

摘要

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. In one form the method includes reducing a fluid flow area to the turbine below a normal size and bypassing a portion of the exhaust gas around a plurality of guide vanes.