Exhaust gas passage with aftertreatment system
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
F02D-023/00
F01N-005/04
F01N-003/10
F01N-001/00
F02B-037/22
F01N-003/20
F02B-037/18
F01N-003/023
출원번호
US-0099451
(2016-04-14)
등록번호
US-9932887
(2018-04-03)
우선권정보
DE-10 2015 207 573 (2015-04-24)
발명자
/ 주소
Kemmerling, Joerg
Sommerhoff, Franz Arnd
Kuske, Andreas
Kindl, Helmut Matthias
Smiljanovski, Vanco
Brinkmann, Franz J.
출원인 / 주소
Ford Global Technologies, LLC
대리인 / 주소
Voutyras, Julia
인용정보
피인용 횟수 :
0인용 특허 :
16
초록▼
Methods and systems are provided for adjusting flow of exhaust gas from downstream of an exhaust turbine outlet to an exhaust gas aftertreatment device inlet via a compact turbine outlet cone with adjustable swirl vanes. Exhaust flow reaching the exhaust gas aftertreatment device is adjusted based o
Methods and systems are provided for adjusting flow of exhaust gas from downstream of an exhaust turbine outlet to an exhaust gas aftertreatment device inlet via a compact turbine outlet cone with adjustable swirl vanes. Exhaust flow reaching the exhaust gas aftertreatment device is adjusted based on a desired exhaust gas temperature and exhaust gas flow rate at the aftertreatment device. During cold start conditions, the swirl vanes may be closed to concentrate exhaust gas flowing towards a portion of the aftertreatment device while after attainment of aftertreatment device light-off temperature, the position of the swirl vanes may be adjusted to introduce turbulence and homogeneity to exhaust flow reaching the exhaust aftertreatment device.
대표청구항▼
1. A method for an engine, comprising: via a controller, determining a cold-start condition, where the cold-start condition includes an engine temperature lower than an exhaust aftertreatment device light-off temperature, the engine temperature based on input received from one or more sensors couple
1. A method for an engine, comprising: via a controller, determining a cold-start condition, where the cold-start condition includes an engine temperature lower than an exhaust aftertreatment device light-off temperature, the engine temperature based on input received from one or more sensors coupled to the engine,closing a plurality of vanes coupled to an exhaust turbine outlet cone via an actuator to concentrate exhaust flowing towards a portion of a catalyst of an exhaust aftertreatment device responsive to determining the cold-start condition, andafter attainment of exhaust aftertreatment device light-off temperature, adjusting an orientation of the plurality of vanes via the actuator to introduce turbulence and homogeneity to exhaust flow reaching the exhaust aftertreatment device. 2. The method of claim 1, wherein closing the plurality of vanes and adjusting the orientation of the plurality of vanes via the actuator includes the actuator adjusting a ring coupled to each vane of the plurality of vanes via a plurality of shafts and levers, wherein a shaft forms an axis about which a vane can rotate. 3. The method of claim 2, wherein the ring is coupled to an outer surface of a wall enclosing the turbine outlet cone via a mounting device, and where the actuator is coupled to the ring to adjust the ring. 4. The method of claim 1, wherein adjusting the orientation of the plurality of vanes is based on one or more of exhaust mass flow, exhaust temperature, and temperature demand of the exhaust aftertreatment device. 5. The method of claim 1, further comprising determining that an exhaust flow rate is less than a threshold exhaust flow rate, the exhaust flow rate based on estimated engine operating conditions and input received from one or more exhaust gas sensors, and closing the plurality of vanes to flow a concentrated exhaust mass towards the portion of the catalyst of the exhaust aftertreatment device while the exhaust flow rate is less than the threshold exhaust flow rate. 6. The method of claim 1, further comprising opening the plurality of vanes to a maximum possible degree based on a pressure loss between a turbine and the exhaust aftertreatment device that is greater than a threshold pressure loss, the pressure loss based on input from one or more exhaust gas sensors. 7. An engine system, comprising: an exhaust gas passage for discharging exhaust gas;a turbine coupled to the exhaust gas passage;at least one combined exhaust gas aftertreatment system coupled to the exhaust gas passage downstream of the turbine;a housing coupling the turbine to the exhaust gas aftertreatment system, wherein the housing includes an adjustable guide device forming an opening in a middle portion of the housing, the adjustable guide device comprising a plurality of guide vanes that can be rotated via an adjusting device arranged in the housing;a plurality of sensors coupled to the engine system; anda controller with computer readable instructions stored on non-transitory memory for: adjusting the plurality of guide vanes via the adjusting device to vary a flow of exhaust from downstream of the turbine to an inlet of the exhaust gas aftertreatment system based on engine operating conditions, where the engine operating conditions are determined based on input data received from one or more of the plurality of sensors coupled to the engine system. 8. The system of claim 7, further comprising a wall enclosing the housing and the adjustable guide device while forming a gap between each guide vane of the plurality of guide vanes and the wall. 9. The system of claim 8, wherein each of the plurality of guide vanes is arranged on a guide vane shaft and rotatable about the guide vane shaft. 10. The system of claim 9, wherein each of the guide vane shafts is of rectilinear shape and forms an angle with the wall, wherein the angle is 90°. 11. The system of claim 7, wherein the adjusting device comprises a rotatable adjusting ring for adjusting an orientation of the plurality of guide vanes via rotation of the adjusting ring, and an actuator for adjusting the rotation of the adjusting ring based on input from the controller. 12. The system of claim 11, wherein the rotatable adjusting ring is kinematically coupled to each of the guide vane shafts via a plurality of pivotable levers. 13. The system of claim 12, wherein each of the plurality of pivotable levers is respectively connected at a first end, on a shaft side, and in a rotationally conjoint manner to a guide vane shaft, and wherein each of the plurality of pivotable levers is mounted at a second end, opposite the first end, on a ring side, and movably in a recess of the adjusting ring, the plurality of pivotable levers enabling adjustments to the orientation of the guide vanes via rotation of the adjusting ring. 14. The system of claim 7, wherein the housing is one of a funnel-shaped form and a frustoconical form with a first end of the housing, proximal to the turbine, narrower than a second end of the housing, proximal to the exhaust gas aftertreatment system, the exhaust gas aftertreatment system including one or more of a NOx trap, an exhaust catalyst, and a particulate filter. 15. The system of claim 7, further comprising a sleeve arranged in the housing aligned coaxially in relation to the housing and passing through a central opening in the adjustable guide device, wherein the sleeve is one of a funnel-shaped form and a frustoconical form with a first end of the sleeve, proximal to the turbine, narrower than a second end of the sleeve, proximal to the exhaust gas aftertreatment system. 16. The system of claim 15, wherein the sleeve is coupled to a wall of the housing via a plurality of holding devices. 17. The system of claim 16, wherein the plurality of holding devices includes rod shaped devices coupling the first end of the sleeve to the wall, forming an angle with the wall, wherein the angle is 90°. 18. A method for an engine, comprising: via a controller, rotating a ring coupled to a turbine outlet cone by adjusting an actuator responsive to a desired exhaust gas temperature and flowrate, where rotating the ring adjusts a position of a plurality of swirl vanes coupled to the ring to vary a cross-sectional area of the turbine outlet cone, the plurality of swirl vanes distributed on an inner circumference of a wall of the turbine outlet cone, and where the ring is coupled to an outer circumference of the wall, the desired exhaust gas temperature and flowrate based on engine operating conditions, and the engine operating conditions determined based on input data received from a plurality of sensors coupled to the engine. 19. The method of claim 18, wherein adjusting the position of the plurality of swirl vanes includes determining that an exhaust temperature is lower than a threshold exhaust temperature, and actuating the plurality of swirl vanes to a closed position to cover a majority of the cross-sectional area and to channelize concentrated exhaust flow from a turbine outlet towards a portion of an exhaust aftertreatment device responsive to determining that the exhaust temperature is lower than the threshold exhaust temperature, wherein the exhaust temperature is detected via an exhaust temperature sensor. 20. The method of claim 19, wherein adjusting the position of the plurality of swirl vanes further includes determining that the exhaust temperature is higher than the threshold exhaust temperature, and actuating the plurality of swirl vanes to an open position responsive to determining that the exhaust temperature is higher than the threshold exhaust temperature, a degree of opening of the open position based on the desired exhaust gas temperature reaching the exhaust aftertreatment device, where the degree of opening of the open position opens a majority of the cross-sectional area and routes exhaust flow from the turbine outlet towards the exhaust aftertreatment device.
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이 특허에 인용된 특허 (16)
Gordon Donald C. (2220 Phillips Dr. Northglenn CO 80233), Anti-pollution device for exhaust gases.
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Kornherr, Heinz; Mueller, Michael; Schoenberger, Klaus; Aichhorn, Bernhard; Barnstedt, Gert; Bruene, Hans-Juergen, Device for the distribution of flowable additives in exhaust gas systems.
Talmon-Gros, Dietmar; Huurdeman, Bernhard; Franz, Andreas; Fledersbacher, Peter; Sumser, Siegfried, Exhaust gas turbocharger for an internal combustion engine and device for switching an air guiding device of an exhaust gas turbocharger.
Chang Zung S. (Painted Post NY) Howitt John S. (Big Flats NY) VanDewoestine Robert V. (Corning NY), Swirl exhaust gas flow distribution for catalytic conversion.
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