초록 ▼

The invention concerns a turbocharger for an internal combustion engine, which is at least two-stage, wherein each respective stage of the turbocharger system is respectively a turbine and respectively a compressor, which via a common shaft are coupled with each other, wherein at least the exhaust g

The invention concerns a turbocharger for an internal combustion engine, which is at least two-stage, wherein each respective stage of the turbocharger system is respectively a turbine and respectively a compressor, which via a common shaft are coupled with each other, wherein at least the exhaust gas side parts of the exhaust gas turbocharger are integrated in a common housing unit. The invention further concerns an internal combustion engine with such a compressor system.

대표청구항 ▼

The invention claimed is: 1. A turbocharger for an internal combustion engine, which is at least two-staged, wherein each respective stage (11, 12) comprises one turbine (13, 16) and respectively one compressor (14, 17), which are connected with each other via a common shaft (15, 18), wherein each

The invention claimed is: 1. A turbocharger for an internal combustion engine, which is at least two-staged, wherein each respective stage (11, 12) comprises one turbine (13, 16) and respectively one compressor (14, 17), which are connected with each other via a common shaft (15, 18), wherein each of the turbines (13, 16) of the exhaust gas turbocharger (10) are integrated into a common housing unit (19, 19'), wherein an exhaust outlet of the high-pressure turbine (13) is directly connected with an inlet of the low-pressure turbine (16), wherein each of said turbines receives exhaust gas radially and discharges exhaust gas axially based on the respective axis of rotation of said turbines. 2. A turbocharger according to claim 1, wherein at least one high-pressure stage (11) and at least one low-pressure stage (12) are provided, wherein the low-pressure stage (12) is provided downstream and the high-pressure stage (11) is provided upstream with respect to the direction of flow of the exhaust gas. 3. A turbocharger according to claim 2, wherein the high pressure stage (11) includes at least one high-pressure turbine (13) in the flow of the exhaust gas and at least one high-pressure compressor (14) in the flow of the charge air, which are connected to each other via a first common shaft (15) provided between these two, and that the low pressure stage (12) includes at least one low-pressure turbine (16) in the flow of the exhaust gas and at least one low-pressure compressor (17) provided in the flow of the charge air, which are coupled to each other via a second common shaft (18) provided between them. 4. A turbocharger according to claim 1, wherein an exhaust outlet of the high-pressure turbine (13) is connected with an inlet of the low-pressure turbine (16) via a common channel within the common housing (19) without interposition of piping. 5. A turbocharger according to claim 1, wherein the high pressure stage (11) and the low-pressure stage (12) are integrated in a common housing (19'). 6. A turbocharger according to claim 1, wherein at least one turbine (13, 16) of the turbocharger (10) is single volute. 7. A turbocharger according to claim 1, wherein at least one turbine (13, 16) is two or more volute. 8. A turbocharger according to claim 1, wherein the common housing (19, 19') is cast iron. 9. A turbocharger according to claim 1, wherein a pipe connecting line (24) is provided, via which the charge air outlet of the low-pressure compressor (17) is connected with the charge air inlet of the high-pressure compressor (14), preferably via a flange. 10. A turbocharger according to claim 1, wherein the diameter of the turbine wheel of the high-pressure turbine (13) is smaller than the diameter of the turbine wheel of the low-pressure turbine (16). 11. A turbocharger according to claim 1, wherein the common housing (19,19') is comprised of at least first and second pans, wherein the first part houses the first turbine (13) and the second part houses the second turbine (16). 12. A turbocharger according to claim 11, wherein the connection between the first part and the second part of the two turbines (13, 16) is via a flange. 13. A turbocharger according to claim 12, wherein the connection is comprised of an elongated neck of the common housing unit (19, 19'). 14. A turbocharger according to claim 13, wherein in the common housing unit (19, 19') at least one flap valve and/or slide valve is provided for controlling a bypass mass flow of the exhaust gas. 15. A turbocharger according to claim 1, wherein the two turbines (13, 16) are provided connected to each other in compact manner.