Method of utilizing waste heat in turbocharger unit of an internal combustion engine and internal combustion engine arrangement
IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0239117
(2001-04-10)
|
우선권정보 |
SE-0013136 (2000-04-10) |
국제출원번호 |
PCT/FI01/00356
(2002-11-26)
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§371/§102 date |
20021126
(20021126)
|
국제공개번호 |
WO01/77504
(2001-10-18)
|
발명자
/ 주소 |
|
출원인 / 주소 |
- Wartsila Technology Oy Ab
|
대리인 / 주소 |
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인용정보 |
피인용 횟수 :
5 인용 특허 :
5 |
초록
▼
Method of utilizing waste heat in a turbocharger unit of an internal combustion engine unit having means for recovering heat from the combustion process, the engine unit comprising a turbocharger unit adapted to feed pressurized combustion air to the engine and to receive exhaust gases from the engi
Method of utilizing waste heat in a turbocharger unit of an internal combustion engine unit having means for recovering heat from the combustion process, the engine unit comprising a turbocharger unit adapted to feed pressurized combustion air to the engine and to receive exhaust gases from the engine, wherein the means for recovering heat is producing steam, which is generated using waste heat from the engine and wherein the steam is injected to the turbocharger unit and the energy of steam is at least partially recovered in the turbocharger. The invention relates also to an internal combustion engine arrangement which comprises means for recovering heat from the combustion process and a turbocharger unit adapted to feed pressurized combustion air to the engine and to receive exhaust gases from the engine. The turbocharger unit is provided with a steam injection arrangement connected with the means for recovering heat.
대표청구항
▼
1. A method of operating an internal combustion engine unit that comprises a turbocharger unit which feeds pressurized combustion air to the engine and receives exhaust gases from the engine, and a steam generator for generating steam by recovering heat from the combustion process, said method compr
1. A method of operating an internal combustion engine unit that comprises a turbocharger unit which feeds pressurized combustion air to the engine and receives exhaust gases from the engine, and a steam generator for generating steam by recovering heat from the combustion process, said method comprising:using the steam generator to generate steam by recovering waste heat from the engine, and injecting steam generated by the steam generator into a compressor of the turbocharger unit via a steam injection arrangement provided in the turbocharger unit. 2. A method according to claim 1, wherein the compressor has an impeller with a tip section and the method comprises injecting the steam at the tip section of the impeller through a plurality of nozzles so that a considerable portion of the steam energy is used to drive the impeller.3. A method according to claim 1, wherein the compressor includes an impeller and has an inlet for admitting air to the compressor and the method comprises injecting the steam tangentially into the inlet of the compressor close to the impeller so that mixing of steam with the air upstream of the impeller is minimized and the steam forms a layer that rotates and drives the impeller.4. A method according to claim 1, comprising injecting the steam into the turbocharger through a supersonic nozzle.5. A method according to claim 1, comprising injecting steam generated by the steam generator into the turbocharger unit at a high pressure region of a turbine of the turbocharger unit via a steam injection arrangement provided in the turbocharger unit.6. A method according to claim 1, comprising controlling the rate of injection of steam by a closed loop control system that keeps the exhaust gases at a pre-set temperature level.7. A method according to claim 1, wherein the mass of the steam is between 10 to 20% of the mass of combustion air.8. A method according to claim 1, wherein the energy of steam is at least partially recovered in the turbocharger.9. A method of operating an internal combustion engine unit that comprises a turbocharger unit which feeds pressurized combustion air to the engine and receives exhaust gases from the engine, and a steam generator for generating steam by recovering heat from the combustion process, said method comprising:using the steam generator to generate steam by recovering waste heat from the engine, and injecting steam generated by the steam generator into the turbocharger unit at a high pressure region of a turbine of the turbocharger unit via a steam injection arrangement provided in the turbocharger unit so that mixing of steam with the exhaust gases is minimized and steam energy is recovered in the turbine. 10. A method according to claim 9, comprising injecting the steam into the turbocharger through a supersonic nozzle.11. A method according to claim 9, comprising controlling the rate of injection of steam by a closed loop control system that keeps the exhaust gases at a pre-set temperature level.12. A method according to claim 9, wherein the mass of the steam is between 10 to 20% of the mass of combustion air.13. A method according to claim 9, wherein the energy of steam is at least partially recovered in the turbocharger.14. A method of operating an internal combustion engine unit that comprises a turbocharger unit which feeds pressurized combustion air to the engine and receives exhaust gases from the engine, and a steam generator for generating steam by recovering heat from the combustion process, said method comprising:using the steam generator to generate steam by recovering waste heat from the engine, injecting steam generated by the steam generator into the turbocharger unit via a steam injection arrangement provided in the turbocharger unit, and controlling the rate of injection of steam by a closed loop control system that keeps the exhaust gases at a pre-set temperature level. 15. A method according to claim 14, comprising injecting the steam into the turbocharger through a supersonic nozzle.16. A method according to claim 14, wherein the mass of the steam is between 10 to 20% of the mass of combustion air.17. A method according to claim 14, wherein the energy of steam is at least partially recovered in the turbocharger.18. A method according to claim 14, comprising injecting steam into both a high pressure region of a turbine of the turbocharger unit and into a compressor of the turbocharger unit.19. An internal combustion engine comprising:a steam generator for recovering heat from the combustion process, a turbocharger unit adapted to feed pressurised combustion air to the engine, the turbocharger unit including a turbine for receiving exhaust gases from the engine and having a high-pressure region, and a steam injection arrangement connected with the steam generator, wherein the steam injection arrangement is provided in the high-pressure region of the turbine of the turbocharger unit. 20. An internal combustion engine according to claim 19, wherein the turbocharger unit includes a compressor and the engine further comprises a steam injection arrangement connected with the steam generator and provided in the compressor of the turbocharger unit.21. An internal combustion engine comprising:a steam generator for recovering heat from the combustion process, a turbocharger unit adapted to feed pressurised combustion air to the engine and to receive exhaust gases from the engine, the turbocharger unit including a compressor, and a steam injection arrangement connected with the steam generator, wherein the steam injection arrangement is provided in the compressor of the turbocharger unit.
이 특허에 인용된 특허 (5)
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Kawamura Hideo,JPX, Heat exchanger apparatus using porous material, and ceramic engine provided with supercharger driven by thermal energy recorded from exhaust gas by the same apparatus.
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Kawamura Hideo,JPX, Heat recovering apparatus for cogeneration system with a turbocharged engine.
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Barrett John R. (Mesa AZ) Cemenska Richard A. (Edelstein IL) Gladden John R. (Metamora IL) Moeckel Mark D. (Peoria IL) Schneider Philip H. (La Jolla CA), Heat recovery system including a dual pressure turbine.
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Bonnaud Pierre L. (Carrieres sur Seine FRX), Method of recovering energy in a power generator and power generator for carrying out the said method.
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Gamell Joseph A. (Kalamazoo MI), System for utilizing waste heat of an internal combustion engine.
이 특허를 인용한 특허 (5)
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Gray, Jr., Charles L., Efficiency turbocharged engine system with bottoming cycle, and method of operation.
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Brasz,Joost J., Emergency power generation system.
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Gottemoller,Paul; Goetzke,Michael B., Engine with charge air-cooling system with water fumigation.
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Massey, Mary Cecelia; Boberg, Thomas Earl, System and method for cooling a combustion gas charge.
-
Singh, Satnarine, System and method for recovering wasted energy from an internal combustion engine.
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