Compressor in the induction tract of an internal combustion engine
First Claim
1. An intake air compressor in the induction tract of an internal combustion engine, including a compressor wheel (16) rotatably supported in a compressor housing having an inlet duct (9) leading to the compressor wheel (16) for the compression of combustion air to an increased boost pressure, and an adjustable swirl device (12) disposed in the flow path of the combustion air to the compressor wheel (16), said swirl device (12) comprising two separate, interacting swirl structures (27, 31) each with a plurality of guide vanes (33, 34) distributed over the circumference of the swirl device (12), the flow cross-section between the guide vanes (33, 34) of the two swirl structures (27, 31) being adjustable by an adjusting motion force acting on at least one of the swirl structures (27, 31), the vane height of the guide vanes (33, 34) of the two swirl structure (27, 31), measured in the axial direction being different in size, the vane height of the guide vanes (34) of the smaller swirl structure (31) being 5% to 35% of the vane height of the guide vanes (33) of the larger swirl structure (27).
2 Assignments
0 Petitions
Accused Products
Abstract
In a compressor in the induction tract of an internal combustion engine with a compressor by which combustion air can be compressed to an increased boost pressure and which includes a compressor wheel rotatably mounted in a compressor housing with a main inlet duct in the flow path to the compressor wheel, and an auxiliary inlet duct joining the main inlet duct in the area of the compressor wheel, an adjustable swirl device is provided in the auxiliary intake duct, which comprises two separate, interacting swirl structures with a plurality of guide vanes distributed over the periphery and arranged so that the flow cross-section between the guide vanes of the two swirl structures can be changed by an adjusting motion of at least one swirl structure, the vane height of the guide vanes of the smaller swirl structure being 5% to 35% of the vane height of the guide vanes of the larger swirl structure.
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Citations
12 Claims
- 1. An intake air compressor in the induction tract of an internal combustion engine, including a compressor wheel (16) rotatably supported in a compressor housing having an inlet duct (9) leading to the compressor wheel (16) for the compression of combustion air to an increased boost pressure, and an adjustable swirl device (12) disposed in the flow path of the combustion air to the compressor wheel (16), said swirl device (12) comprising two separate, interacting swirl structures (27, 31) each with a plurality of guide vanes (33, 34) distributed over the circumference of the swirl device (12), the flow cross-section between the guide vanes (33, 34) of the two swirl structures (27, 31) being adjustable by an adjusting motion force acting on at least one of the swirl structures (27, 31), the vane height of the guide vanes (33, 34) of the two swirl structure (27, 31), measured in the axial direction being different in size, the vane height of the guide vanes (34) of the smaller swirl structure (31) being 5% to 35% of the vane height of the guide vanes (33) of the larger swirl structure (27).
- 11. An exhaust gas turbocharger having an intake air compressor in the induction tract of an internal combustion engine, including a compressor wheel (16) rotatably supported in a compressor housing having an inlet duct (9) leading to the compressor wheel (16) for the compression of combustion air to an increased boost pressure, and an adjustable swirl device (12) disposed in the flow path of the combustion air to the compressor wheel (16), said swirl device (12) comprising two separate, interacting swirl structures (27, 31) each with a plurality of guide vanes (33, 34) distributed over the circumference of the swirl device (12), the flow cross-section between the guide vanes (33, 34) of the two swirl structures (27, 31) being adjustable by an adjusting motion force acting on at least one of the swirl structures (27, 31), the vane height of the guide vanes (33, 34) of the two swirl structure (27, 31), measured in the axial direction being different in size, the vane height of the guide vanes (34) of the smaller swirl structure (31) being 5% to 35% of the vane height of the guide vanes (33) of the larger swirl structure (27) and an exhaust gas turbine (3) in the exhaust gas system of the internal combustion engine to which the compressor is connected.
Specification