Exhaust gas turbocharger for an internal combustion engine
First Claim
1. An exhaust gas turbocharger for an internal combustion engine comprising a compressor and an exhaust gas turbine mounted on a common shaft, said exhaust gas turbine including a rotor with radial and semi-axial flow inlet areas and a single-flow duct surrounding said rotor and having port regions in the form of annular nozzle structures disposed adjacent each flow inlet area of said rotor, and at least one variable guide vane structure with guide vanes arranged in said flow duct for controlling the effective flow cross-section of the annular nozzle structures, and a ring of streamlined shape disposed in said flow duct between said radial and semi-axial flow areas so as to divide the two areas and define said annular nozzles at opposite sides thereof, said ring being mounted on at least one of the guide vane structures of said radial and semi-axial annular flow areas.
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Accused Products
Abstract
In an exhaust gas turbocharger for an internal combustion engine comprising a compressor and an exhaust gas turbine mounted on a common shaft, the exhaust gas turbine includes a rotor with radial and semi-axial flow inlet areas and a single-flow duct surrounding the rotor and having port regions in the form of annular nozzle structures with guide vanes disposed adjacent each flow inlet area which are divided from one another by a ring of streamlined shape which is mounted to the guide vanes of one of the adjacent nozzle structures, said guide vanes having at least portions which are movable for adjusting the flow cross-section of the respective annular nozzle structures for controlling the flow through the radial and semi-axial flow inlet areas.
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Citations
11 Claims
- 1. An exhaust gas turbocharger for an internal combustion engine comprising a compressor and an exhaust gas turbine mounted on a common shaft, said exhaust gas turbine including a rotor with radial and semi-axial flow inlet areas and a single-flow duct surrounding said rotor and having port regions in the form of annular nozzle structures disposed adjacent each flow inlet area of said rotor, and at least one variable guide vane structure with guide vanes arranged in said flow duct for controlling the effective flow cross-section of the annular nozzle structures, and a ring of streamlined shape disposed in said flow duct between said radial and semi-axial flow areas so as to divide the two areas and define said annular nozzles at opposite sides thereof, said ring being mounted on at least one of the guide vane structures of said radial and semi-axial annular flow areas.
Specification