Patent ID: 9003790
Filing Date: 2015-04-14
Classification: F01D,F02B,F02C,F05D

Abstract:
1. A turbocharger, comprising: a compressor comprising compressor blades; a turbine comprising turbine blades; a shaft coupling the compressor to the turbine; an exhaust diffuser disposed downstream from the turbine blades, wherein the exhaust diffuser comprises a bell mouth; and a turbo casing disposed downstream from the exhaust diffuser, wherein the turbo casing comprises a torus-shaped chamber leading to an exhaust outlet disposed on and centered on a second section opposite from a first section, and the torus-shaped chamber has a cross-sectional area that is defined as an area bounded by a first line extending radially from a tip of the bell mouth to a first location along an interior casing wall opposite to the tip, by a portion of a second line extending radially from a leading edge of a bucket base to a second location along the interior casing wall, by a surface of the bell mouth extending between the second line and the tip of the bell mouth, and by a portion of the interior casing wall extending between the first line and the second line, the cross-sectional area of the torus-shaped chamber progressively increasing by at least about 40 percent from a center of the first section in about a first 90 degrees from the center of the first section in an annular direction toward the exhaust outlet in the second section.