Exhaust-gas turbocharger
An exhaust-gas turbocharger ( 1 ) having a bearing housing ( 9 ); a turbine housing ( 2 ) which is fastened to the bearing housing ( 9 ); and a heat shield ( 12 ) which has a heat insulating region ( 13 ) arranged between the turbine housing ( 2 ) and the bearing housing ( 9 ). The heat insulating region ( 13 ) is provided, in its outer circumferential region ( 14 ), with a seal ( 15 ).
1. An exhaust-gas turbocharger ( 1 )
having a bearing housing ( 9 );
having a turbine housing ( 2 ) which is fastened to the bearing housing ( 9 ); and
having a heat shield ( 12 ) which has a radially inner heat insulating region ( 13 ) and a radially outer circumferential region ( 14 ), the outer circumferential region ( 14 ) of the heat shield ( 12 ) being provided with a continuous circumscribing compression seal ( 15 ), wherein the outer circumferential region ( 14 ) is an integral constituent part of the heat shield, wherein the compression seal ( 15 ) is sandwiched between and in contact with the turbine housing ( 2 ) and the bearing housing ( 9 ), and with the compression seal ( 15 ) being clamped between the turbine housing ( 2 ) and the bearing housing ( 9 ) to form a seal between the bearing housing ( 9 ) and the turbine housing ( 2 ) in a gas-tight fashion.
2. The exhaust-gas turbocharger as claimed in claim 1 , wherein the heat insulating region ( 13 ) and the seal ( 15 ) are formed from one component by an extrusion process.
3. The exhaust-gas turbocharger as claimed in claim 1 , wherein the seal ( 15 ) is provided with a sealing bead ( 18 ).
4. The exhaust-gas turbocharger as claimed in claim 3 , wherein the sealing bead ( 18 ) is arranged on a sealing strip ( 19 ) which is connected to the heat insulating region ( 13 ).
5. The exhaust-gas turbocharger as claimed in claim 1 wherein the material thickness of the seal ( 15 ) is smaller than the material thickness of the heat insulating region ( 13 ) of the heat shield ( 12 ).
6. The exhaust-gas turbocharger as claimed in claim 1 , wherein the heat insulating region ( 13 ) is of pot-shaped design.
7. An exhaust-gas turbocharger ( 1 )
having a bearing housing ( 9 );
having a turbine housing ( 2 ) which is fastened to the bearing housing ( 9 ); and
having a heat shield ( 12 ) which has a radially inner heat insulating region ( 13 ) and a radially outer circumferential region ( 14 ), the outer circumferential region ( 14 ) of the heat shield ( 12 ) being provided with a continuous circumscribing compression seal ( 15 ) provided with a sealing bead ( 18 ), wherein the outer circumferential region ( 14 ) is a separate component which is connected to the heat insulating region ( 13 ) of the heat shield ( 12 ), the compression seal ( 15 ) being sandwiched between and in contact with the turbine housing ( 2 ) and the bearing housing ( 9 ), and the compression seal ( 15 ) being clamped between the turbine housing ( 2 ) and the bearing housing ( 9 ) to axially compress the sealing bead ( 18 ) to form a seal between the bearing housing ( 9 ) and the turbine housing ( 2 ) in a gas-tight fashion.
8. The exhaust-gas turbocharger as claimed in claim 7 , wherein the seal ( 15 ) and the heat insulating region ( 13 ) are connected to one another by a cohesive connection.
9. The exhaust-gas turbocharger as claimed in claim 7 , wherein the seal ( 15 ) and the heat insulating region ( 13 ) are connected to one another by means of a positively locking connecting device.
10. The exhaust-gas turbocharger as claimed in claim 9 , wherein the heat insulating region ( 13 ) is provided with a bead ( 16 ) at a connecting point ( 17 ) to the seal ( 15 ).
11. The exhaust-gas turbocharger as claimed in claim 9 , wherein the seal ( 15 ) and the heat insulating region ( 13 ) are connected to one another by pinching at a plurality of points ( 22 ).
12. The exhaust-gas turbocharger as claimed in claim 7 , wherein the seal ( 15 ) and the heat insulating region ( 13 ) are connected to one another by a laser welding process.