초록 ▼

An exemplary turbocharger system for an internal combustion engine is provided. The turbocharger system includes a first turbine and a second turbine. The first turbine is in fluid communication with the internal combustion engine. The first turbine receives a first portion exhaust gas discharged fr

An exemplary turbocharger system for an internal combustion engine is provided. The turbocharger system includes a first turbine and a second turbine. The first turbine is in fluid communication with the internal combustion engine. The first turbine receives a first portion exhaust gas discharged from the internal combustion engine and provides a first turbine exhaust gas. The second turbine is in fluid communication with the first turbine via an inter-stage channel. The inter-stage channel transports the first turbine exhaust gas from the first turbine to the second turbine. The inter-stage channel is in thermal connection with an exhaust gas recirculation channel defined between an inlet and an outlet of the internal combustion engine. The first turbine exhaust gas flowing through the inter-stage channel is capable of being heated by a second portion exhaust gas discharged from the internal combustion engine and flowing through the exhaust gas recirculation channel.

대표청구항 ▼

1. A turbocharger system for an internal combustion engine, the turbocharger system comprising: a first turbine in fluid communication with the internal combustion engine, the first turbine receiving a first portion exhaust gas discharged from the internal combustion engine and providing a first tur

1. A turbocharger system for an internal combustion engine, the turbocharger system comprising: a first turbine in fluid communication with the internal combustion engine, the first turbine receiving a first portion exhaust gas discharged from the internal combustion engine and providing a first turbine exhaust gas; anda second turbine in fluid communication with the first turbine via an inter-stage channel, the inter-stage channel transporting the first turbine exhaust gas from the first turbine to the second turbine; andan exhaust gas recirculation channel defined between an outlet and an inlet of the internal combustion engine, in thermal connection with the inter-stage channel and at least partially covers the inter-stage channel, the first turbine exhaust gas flowing through the inter-stage channel is heated by a second portion exhaust gas discharged from the internal combustion engine and flowing through the exhaust gas recirculation channel. 2. The turbocharger system of claim 1, wherein the internal combustion engine comprises: a first exhaust outlet for discharging the first portion exhaust gas resulted from combustion processes occurring within one or more cylinders of the internal combustion engine to the first turbine; anda second exhaust outlet for discharging the second portion exhaust gas resulted from the same combustion processes occurring within one or more cylinders of the internal combustion engine to the exhaust gas recirculation channel. 3. The turbocharger system of claim 2, wherein the internal combustion engine further comprises an outlet manifold, the first exhaust outlet and the second exhaust outlet are coupled in flow communication with the outlet manifold. 4. The turbocharger system of claim 1, wherein the exhaust gas recirculation channel is arranged with a cooling device, the cooling device is configured to cool the second portion exhaust gas flowing through the exhaust gas recirculation channel and supply cooled exhaust gas to the inlet of the internal combustion engine. 5. The turbocharger system of claim 1, wherein the exhaust gas recirculation channel is arranged with a first valve, the first valve is operated to adjust the amount of the second portion exhaust gas flowing through the exhaust gas recirculation channel. 6. The turbocharger system of claim 3, wherein the exhaust gas recirculation channel defines: a first section running between the second exhaust outlet of the internal combustion engine and the inter-stage channel, the second portion exhaust gas flowing within the first section having a first temperature higher than that of the first turbine exhaust gas provided from the first turbine;a second section running between the inter-stage channel and the cooling device, the second portion exhaust gas flowing within the second section having a second temperature lower than the first temperature; anda third section running between the cooling device and the inlet of the internal combustion engine, the second portion exhaust gas flowing within the third section having a third temperature lower than the second temperature. 7. The turbocharger system of claim 6, wherein the first section is at least partially surrounded with thermal insulated material. 8. The turbocharger system of claim 1, wherein the turbocharger system further comprises a bypass channel coupled between an inlet of the first turbine and an outlet of the first turbine, the bypass channel selectively diverting at least a part of the first portion exhaust gas from the internal combustion engine to the inlet of the second turbine; and wherein the second portion exhaust gas is used to heat a combination of the diverted exhaust gas and the first turbine exhaust gas. 9. The turbocharger system of claim 8, wherein the bypass channel is arranged with a second valve, the second valve is operated to adjust the amount of the diverted exhaust gas. 10. An engine system, comprising: an internal combustion engine comprising: an inlet;a first exhaust outlet for discharging a first portion exhaust gas resulted from combustion processes occurring within the internal combustion engine; anda second exhaust outlet in fluid communication with an intake manifold via an exhaust gas recirculation channel, the exhaust gas recirculation channel receiving a second portion exhaust gas resulted from combustion processes occurring within the internal combustion engine and discharged from the second exhaust outlet; anda turbocharger system comprising: a first turbine in fluid communication with the first exhaust outlet of the internal combustion engine, the first turbine receiving the first portion exhaust gas from the first exhaust outlet and providing a first turbine exhaust gas; anda second turbine in flow communication with the first turbine via an inter-stage channel, the inter-stage channel transporting the first turbine exhaust gas to the second turbine;wherein the exhaust gas recirculation channel is in thermal communication with the inter-stage channel and at least partially covers the inter-stage channel, the first turbine exhaust gas flowing through the inter-stage channel is heated by the second portion exhaust gas flowing through the exhaust gas recirculation channel. 11. The engine system of claim 10, wherein the exhaust gas recirculation channel defines: a first section running between the second exhaust outlet of the internal combustion engine and the inter-stage channel, the second portion exhaust gas flowing within the first section having a first temperature higher than that of the first turbine exhaust gas provided from the first turbine;a second section running between the inter-stage channel and the cooling device, the second portion exhaust gas flowing within the second section having a second temperature lower than the first temperature; anda third section running between the cooling device and the inlet of the internal combustion engine, the second portion exhaust gas flowing within the third section having a third temperature lower than the second temperature. 12. The engine system of claim 10, wherein the turbocharger system further comprises a bypass channel coupled between an inlet of the first turbine and an outlet of the first turbine, the bypass channel selectively diverting at least a part of the first portion exhaust gas from the internal combustion engine to the inlet of the second turbine; and wherein the second portion exhaust gas is used to heat a combination of the diverted exhaust gas and the first turbine exhaust gas. 13. The engine system of claim 10, wherein the internal combustion engine further comprises an outlet manifold, the first exhaust outlet and the second exhaust outlet are coupled in flow communication with the outlet manifold. 14. A two-stage turbocharger system for an internal combustion engine, the two-stage turbocharger system comprising: a high-pressure stage comprising: a high-pressure turbine in flow communication with the internal combustion engine, the high-pressure turbine receiving a first portion exhaust gas discharged from the internal combustion engine and supplying a high-pressure turbine exhaust gas; anda high-pressure compressor driven by the high-pressure turbine for air compression; anda low-pressure stage comprising: a low-pressure turbine coupled to the high-pressure turbine via an inter-stage channel, the inter-stage channel transporting the high-pressure turbine exhaust gas from the high-pressure turbine to the low-pressure turbine; anda low-pressure compressor driven by the low-pressure turbine for air compression;wherein the inter-stage channel is in thermal connection with an exhaust gas recirculation channel defined between an outlet and an inlet of the internal combustion engine and at least partially covered by the exhaust gas recirculation channel, the inter-stage channel is heated by a second portion exhaust gas discharged from the internal combustion engine and flowing through the exhaust gas recirculation channel. 15. The two-stage turbocharger system of claim 14, wherein the exhaust gas recirculation channel defines: a first section running between the second exhaust outlet of the internal combustion engine and the inter-stage channel, the second portion exhaust gas flowing within the first section having a first temperature higher than that of the high-pressure turbine exhaust gas provided from the first turbine;a second section running between the inter-stage channel and the cooling device, the second portion exhaust gas flowing within the second section having a second temperature lower than the first temperature; anda third section running between the cooling device and the inlet of the internal combustion engine, the second portion exhaust gas flowing within the third section having a third temperature lower than the second temperature. 16. The two-stage turbocharger system of claim 14, wherein the two-stage turbocharger system further comprises a bypass channel coupled between an inlet of the high-pressure turbine and an outlet of the high-pressure turbine, the bypass channel selectively diverting at least a part of the first portion exhaust gas from the internal combustion engine to the inlet of the low-pressure turbine; and wherein the second portion exhaust gas is used to heat a combination of the diverted exhaust gas and the high-pressure turbine exhaust gas. 17. The two-stage turbocharger system of claim 14, wherein the exhaust gas recirculation channel is arranged with a cooling device, the cooling device is configured to cool the second portion exhaust gas flowing through the exhaust gas recirculation channel and supply cooled exhaust gas to the inlet of the internal combustion engine.