Multi-stage turbocharger system with intercooling and aftercooling
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
F02B-037/00
F02B-037/007
F02B-037/013
출원번호
US-0835726
(2013-03-15)
등록번호
US-9010117
(2015-04-21)
발명자
/ 주소
Genter, David P.
출원인 / 주소
Cummins Inc.
대리인 / 주소
Krieg DeVault LLP
인용정보
피인용 횟수 :
1인용 특허 :
13
초록▼
A turbocharged internal combustion engine system includes at least one high pressure turbocharger system and at least one low pressure turbocharger system. An air-to-air intercooler is connected between the low pressure compressor of the low pressure turbocharger system and the high pressure compres
A turbocharged internal combustion engine system includes at least one high pressure turbocharger system and at least one low pressure turbocharger system. An air-to-air intercooler is connected between the low pressure compressor of the low pressure turbocharger system and the high pressure compressor of the high pressure turbocharger system. An air-to-water aftercooler is connected to the intake system between the high pressure compressors and the intakes of the cylinders of the internal combustion engine.
대표청구항▼
1. An internal combustion engine system, comprising: an internal combustion engine including at least one intake passage for receiving and delivering an air flow to at least a portion of a plurality of cylinders of the internal combustion engine and at least one exhaust passage for receiving exhaust
1. An internal combustion engine system, comprising: an internal combustion engine including at least one intake passage for receiving and delivering an air flow to at least a portion of a plurality of cylinders of the internal combustion engine and at least one exhaust passage for receiving exhaust gas from at least a portion of the plurality of cylinders;at least four high pressure turbochargers with respective ones of a first high pressure turbine, a second high pressure turbine, a third high pressure turbine, and a fourth high pressure turbine situated in respective ones of a first exhaust passage, a second exhaust passage, a third exhaust passage, and a fourth exhaust passage of the at least one exhaust passage;a first low pressure turbocharger with a first low pressure turbine situated in the at least one exhaust passage downstream of the first and second high pressure turbines and a second low pressure turbocharger with a second low pressure turbine situated in the at least one exhaust passage downstream of the third and fourth high pressure turbines;the first low pressure turbocharger further including a first low pressure compressor operably connected to the first low pressure turbine with the first low pressure compressor situated in the at least one intake passage and the second low pressure turbocharger including a second low pressure compressor operably connected with the second low pressure turbine with the second low pressure compressor situated in the at least one intake passage;the first and second exhaust passages coming together downstream of the first and second high pressure turbines and forming a first common exhaust passage that is connected to the first low pressure turbine of the first low pressure turbocharger;the third and fourth exhaust passages coming together downstream of the third and fourth high pressure turbines and forming a second common exhaust passage that is connected to the second low pressure turbine of the second low pressure turbocharger;at least one of the at least four high pressure turbochargers further including a first high pressure compressor operably connected with at least the first high pressure turbine with the first high pressure compressor situated in the at least one intake passage downstream of the first low pressure compressor;an intercooler in the at least one intake passage upstream of the first high pressure compressor and downstream of the first and second low pressure compressors; andan aftercooler in the at least one intake passage downstream of the first high pressure compressor and upstream of an intake manifold of the internal combustion engine. 2. The internal combustion engine system of claim 1, wherein the first and second low pressure compressors include outlets directly connected to or that come together upstream of the intercooler. 3. The internal combustion engine system of claim 2, wherein the first intake passage branches downstream from the intercooler into a second intake passage and a third intake passage. 4. The internal combustion engine system of claim 3, wherein: the at least four high pressure turbochargers further include respective ones of the first high pressure compressor, a second high pressure compressor, a third high pressure compressor, and a fourth high pressure compressor;the second intake passage is connected to the first high pressure compressor and the third high pressure compressor; andthe third intake passage is connected to the second high pressure compressor and the fourth high pressure compressor. 5. The internal combustion engine system of claim 4, wherein each of the first, the second, the third and the fourth high pressure compressors is connected separately to the aftercooler. 6. The internal combustion engine system of claim 1, wherein the internal combustion engine is greater than 2000 horsepower. 7. The internal combustion engine system of claim 1, wherein the intercooler is an air-to-air intercooler and the aftercooler is an air-to-water aftercooler. 8. A method of operating an internal combustion engine system, including: operating a combustion engine fitted with a multi-stage turbocharging system, wherein operating the combustion engine includes: passing an intake flow via an intake passage through an intercooler after passing the intake flow through a first low pressure compressor of a first low pressure turbocharger and through a second low pressure compressor of a second low pressure turbocharger, wherein the first low pressure compressor is operably connected to a first low pressure turbine and the second low pressure compressor is operably connected to a second low pressure turbine;passing the compressed and cooled intake flow from the intercooler through at least one high pressure compressor of a first high pressure turbocharger including a first high pressure turbine, and further including a second high pressure turbocharger, a third high pressure turbocharger, and a fourth high pressure turbocharger, wherein the second, third and fourth high pressure turbochargers include a a second high pressure turbine, a third high pressure turbine, and a fourth high pressure turbine, respectively, and the first, second, third and fourth high pressure turbines are operably connected to respective ones of a first exhaust passage, a second exhaust passage, a third exhaust passage, and a fourth exhaust passage, wherein the first and second exhaust passages come together downstream of the first and second high pressure turbines and form a first common exhaust passage that is connected to the first low pressure turbine of the first low pressure turbocharger and the third and fourth exhaust passages come together downstream of the third and fourth high pressure turbines and form a second common exhaust passage that is connected to the second low pressure turbine of the second low pressure turbocharger;passing the compressed intake flow from the at least one high pressure compressor through an aftercooler; andintroducing the cooled and compressed intake flow from the aftercooler into an intake of a plurality of cylinders of the combustion engine. 9. The method of operating the internal combustion engine system of claim 8, wherein the first low pressure compressor and the second low pressure compressor include respective ones of a first outlet and a second outlet that come together at the intake passage upstream of the intercooler. 10. The method of operating the internal combustion engine system of claim 9, wherein the intake passage branches downstream from the intercooler into a second intake passage and a third intake passage. 11. The method of operating the internal combustion engine system of claim 10, wherein the at least at least one high pressure compressor includes a first high pressure compressor and a second high pressure compressor that receive intake flow from the second intake passage and a third high pressure compressor and a fourth high pressure compressor that receive intake flow from the third intake passage. 12. The method of operating the internal combustion engine system of claim 11, wherein each of the first, second, third and fourth high pressure compressors is separately connected to the aftercooler. 13. The method of operating the internal combustion engine system of claim 8, including operating the combustion engine at a high altitude. 14. The method of operating the internal combustion engine system of claim 8, wherein the intercooler is an air-to-air intercooler and the aftercooler is an air-to-water aftercooler.
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