[특허]Exhaust turbine generator system and method of controlling the same

Navistar Canada, Inc.

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Exhaust turbine generator system and method of controlling the same

국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	F03B-013/00 F03B-013/10 H02P-009/04 F02D-031/00 F02D-035/00 F01D-015/10 F02C-006/00 H02K-007/18
미국특허분류(USC)	290/043; 290/040A; 290/052
출원번호	US-0508226 (2009-07-23)
등록번호	US-8253260 (2012-08-28)
발명자 / 주소	Oriet, Leo P. Bocancea, Andre Casey, Colin J.
출원인 / 주소	Navistar Canada, Inc.
대리인 / 주소	Calfa, Jeffrey P.
인용정보	피인용 횟수 : 0 인용 특허 : 23

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An exhaust gas turbine generator system for a vehicle that has an internal combustion engine with an exhaust system is provided. The exhaust system comprises a turbine, an electrical generator, a waste gate, and an electronic control module. The turbine is disposed in fluid communication with an exhaust gas system of an internal combustion engine to allow fluid flow between the turbine and the exhaust gas system. The electrical generator connects to the turbine. The waste gate is disposed in fluid communication with the exhaust gas system of the internal combustion engine. The waste gate is positionable between an open position and a closed position in response to an output signal from the electronic control module. The fluid flow in the exhaust gas system to the turbine is reduced when the waste gate is positioned to the open position.

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1. An exhaust gas turbine generator system for a vehicle having an internal combustion engine with an exhaust gas system, the exhaust gas system comprising: a turbine disposed in fluid communication with the exhaust gas system of the internal combustion engine;an electrical generator connected to the turbine;an electronic control module; anda waste gate disposed in fluid communication with the exhaust gas system of the internal combustion engine to allow fluid flow between the turbine and the exhaust gas system, the waste gate positionable between an open position and a closed position in response to an output signal from the electronic control module; and wherein fluid flow to the turbine is reduced when the waste gate is positioned to the open position, wherein the electrical generator produces no electrical energy when the waste gate is positioned to the open position. 2. The exhaust gas turbine generator system of claim 1, wherein the electrical generator is connected to the turbine by a shaft coupled to both the electrical generator and the turbine. 3. The exhaust gas turbine generator system of claim 1, wherein the electrical generator produces electrical energy proportional to position of the waste gate between the open position and the closed position of the waste gate. 4. The exhaust gas turbine generator system of claim 1 further comprising: a passageway of the exhaust gas system that bypasses the turbine. 5. The exhaust gas turbine generator system of claim 4, wherein the waste gate is disposed in the passageway. 6. The exhaust gas turbine generator system of claim 1, wherein the electronic control module monitors electrical energy requirements of the vehicle. 7. The exhaust gas turbine generator system of claim 1, wherein the waste gate is positioned to the open position in response to the electronic control module detecting a malfunction with the exhaust gas turbine generator system. 8. The exhaust gas turbine generator system of claim 1, wherein fluid flow between the turbine and the exhaust gas system is increased when the waste gate is positioned to the closed position. 9. A method of operating an exhaust gas turbine generator system for a vehicle having an internal combustion engine having an exhaust system, the method comprising: providing an exhaust gas turbine generator system in fluid communication with the exhaust system of the internal combustion engine, the exhaust gas turbine generator system having a turbine, a generator, a waste gate movable between an open position and a closed position, and an electronic control module;generating electrical energy with the exhaust gas turbine generator system;determining whether electrical demand for a vehicle is above a predetermined threshold; andpositioning the waste gate in the open position when the electrical demand is less than the predetermined threshold, wherein positioning the waste gate in the open position reduces fluid flow between the exhaust gas turbine generator system and the exhaust gas system, and reduces the generated electrical energy, wherein the electrical demand is determined based upon the electrical energy requirements of an electrical motor of the vehicle. 10. The method of claim 9, wherein the electrical demand is determined by the electronic control module. 11. The method of claim 9, wherein the positioning the waste gate in the open position allows a passageway of the exhaust gas system that bypasses the turbine to receive exhaust gas. 12. The method of claim 11, further comprising: determining the exhaust gas turbine generator system is operating within at least one predetermined operating parameter; andpositioning the waste gate in the open position when the exhaust gas turbine generator system is not operating within the at least one predetermined operating parameter. 13. The method of claim 12, wherein determining whether the exhaust gas turbine generator system is operating within at least one predetermined operating parameter is determined by the electronic control module. 14. The method of claim 9 further comprising: monitoring pressure within the exhaust system of the internal combustion engine;determining whether the pressure within the exhaust system of the internal combustion engine exceeds a predefined threshold; andpositioning the waste gate in the open position when the pressure within the exhaust system of the internal combustion engine is above the predefined threshold.

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