IPC분류정보
국가/구분 |
United States(US) Patent
등록
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국제특허분류(IPC7판) |
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출원번호 |
US-0631131
(2000-08-02)
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발명자
/ 주소 |
- Kolmanovsky, Ilya Vladimir
- Stefanopoulou, Anna G.
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출원인 / 주소 |
- Ford Global Technologies, Inc.
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대리인 / 주소 |
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인용정보 |
피인용 횟수 :
25 인용 특허 :
19 |
초록
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A method of controlling an exhaust gas aftertreatment system in a compression ignition engine having a power-assisted turbocharger coupled to a power source. The turbocharger includes a compressor in communication with an intake manifold and a turbine in communication with an exhaust manifold. The m
A method of controlling an exhaust gas aftertreatment system in a compression ignition engine having a power-assisted turbocharger coupled to a power source. The turbocharger includes a compressor in communication with an intake manifold and a turbine in communication with an exhaust manifold. The method comprises the steps of determining an operating mode of the exhaust gas aftertreatment system selected from the group consisting of a light off mode, regeneration mode, and storage mode. The method then determines a charge value associated with the power source, and engages the power source to the power-assisted turbocharger as a function of the charge value and the operating mode of the exhaust gas aftertreatment system. In one aspect of the invention, negative power is applied to the power-assisted turbocharger to increase the exhaust gas temperature to achieve particulate filter light-off. In another aspect, positive power is applied to the power-assisted turbocharger to reduce turbo-lag or engine pumping losses. In another aspect, negative or positive power is applied to the power-assisted turbocharger to maintain a desired oxygen flow through the particulate filter.
대표청구항
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A method of controlling an exhaust gas aftertreatment system in a compression ignition engine having a power-assisted turbocharger coupled to a power source. The turbocharger includes a compressor in communication with an intake manifold and a turbine in communication with an exhaust manifold. The m
A method of controlling an exhaust gas aftertreatment system in a compression ignition engine having a power-assisted turbocharger coupled to a power source. The turbocharger includes a compressor in communication with an intake manifold and a turbine in communication with an exhaust manifold. The method comprises the steps of determining an operating mode of the exhaust gas aftertreatment system selected from the group consisting of a light off mode, regeneration mode, and storage mode. The method then determines a charge value associated with the power source, and engages the power source to the power-assisted turbocharger as a function of the charge value and the operating mode of the exhaust gas aftertreatment system. In one aspect of the invention, negative power is applied to the power-assisted turbocharger to increase the exhaust gas temperature to achieve particulate filter light-off. In another aspect, positive power is applied to the power-assisted turbocharger to reduce turbo-lag or engine pumping losses. In another aspect, negative or positive power is applied to the power-assisted turbocharger to maintain a desired oxygen flow through the particulate filter. (6, 7) cross over in a region of one end of said basic body (1) which is offset from the center of said basic body, and said extension (8) of said one slot (6) is directed towards the center of the basic body (1). 3. The component as claimed in claim 2, wherein said basic body (1) has an angled end, and the supporting zones (9, 10) for said first chain link (11) for transmitting force between said component and said link chain are arranged on said angled end of said basic body (1). 4. The component as claimed in claim 2, wherein the crossover slots (6, 7; 31, 32) are arranged essentially perpendicularly to the pulling direction of the chain (2). 5. The component as claimed in claim 1, wherein said basic body (1) has an angled end, and the supporting zones (9, 10) for said first chain link (11) for transmitting force between said component and said link chain are arranged on said angled end of said basic body (1). 6. The component as claimed in claim 1, wherein the crossover slots (6, 7; 31, 32) are arranged essentially perpendicularly to the pulling direction of the chain (2). 7. The component as claimed in claim 1, wherein the securing element (14; 16; 36) is formed by a section of wire which encloses a crosspiece-like section (13) of the basic body (1), passes through the crossover slots (6, 7) and is bent together at its ends. 8. The component as claimed in claim 7, wherein the securing element (14) is a ring link. 9. The component as claimed in claim 7, wherein the securing element (16) is an oval link. 10. The component as claimed in claim 9, wherein an identification tag (17) is connected to the oval link. 11. The component as claimed in claim 1, wherein the securing element (18) is formed by a sheet-metal strip, of which the ends (20, 21), which are connected to one another by a yoke (19) arranged in one of the crossover slots (6, 7), enclose a section (13) of the basic body (1) in a fork-like manner. 12. The component as claimed in claim 1, wherein the securing element (22) is formed by a screw which is screwed into that end of the slot (6), having the extension (8), which is directed away from the extension (8). 13. The component as claimed in claim 1, wherein the securing element (24) is formed by a bolt which can be displaced, counter to the action of a spring (23), perpendicularly to the slot (6), having the extension (8), and is provided with a transverse groove (25) which, overcoming the spring force, can be transferred into a position in which the bolt releases the crossover slots (6, 7). 14. The component as claimed in claim 13, wherein the bolt is provided with at least one protrusion (28) which, in the securing position of the bolt, projects into the slot (7) of the crossover slots (6, 7) which is arranged parallel to the bolt. 15. The component as claimed in claim 14, wherein the protrusion (28) comprises means for preventing rotation of the bolt. 16. The component as claimed in claim 1, wherein said basic body (29) is formed by an essentially U-shaped bracket having a yoke (30), said crossover slots (31, 32) being arranged in said yoke of said essentially U-shaped bracket. 17. The component as claimed in claim 1, wherein said two crossover slots (6, 7) are oriented perpendicularly to each other, and said slot (7) not having said extension (8) is opened at one of its two ends. 18. The component as claimed in claim 17, wherein said securing element (14) at least partially closes said slot (7) not having said extension (8). 19. The component as claimed in claim 1, wherein said basic body (37) is essentially T-shaped. 20. The component as claimed in claim 19, wherein that part of the basic body (37) which corresponds to the crossbar of the T is provided with two pairs of crossover slots (6, 7), while that part of the basic body (37) which corresponds to the longitudinal bar of the T forms an eyelet-like suspension head (38). 21. The component as claimed in claim 20, said component comprising a joint securing e lement (16) for said two pairs of crossover slots (6, 7). 22. The component as claimed in claim 1, wherein said two crossover slots (6, 7) are oriented substantially perpendicularly to each other. a compressor for compressing air supplied thereto and discharging the compressed air, a combustor for combusting the compressed air from said compressor and a fuel and a gas turbine to be driven by a combustion gas from said combustor, comprising: an injection unit, arranged within an intake air duct at an upstream side of said compressor and constructed so that water droplets are sprayed into the air to be supplied to the compressor to decrease the temperature of the air to be supplied into said compressor to a temperature lower than an atmospheric temperature and the sprayed water droplets introduced into said compressor with the air having been decreased in temperature are evaporated during passage through said compressor; and a controlling unit for monitoring an axial flow velocity of fluid flowing in said compressor and controlling a quantity of water spray on the basis of the axial flow velocity, during operation of spraying water droplets. 2. A gas turbine having a compressor for compressing air supplied thereto and discharging a compressed air, a combustor for combusting the compressed air from said compressor and a fuel and a gas turbine to be driven by a combustion gas from said combustor, comprising: an injection unit, arranged within an intake air duct at an upstream side of said compressor and constructed so that water droplets are sprayed into the air to be supplied to the compressor to decrease the temperature of the air to be supplied into said compressor to a temperature lower than an atmospheric temperature and the sprayed water droplets introduced into said compressor with the air having been decreased in temperature are evaporated during passage through said compressor; and a controlling unit for controlling said injection unit so as to increase a quantity of fuel supplied to said combustor at time of water droplet spraying, as compared with a quantity of fuel supplied to said combustor at time of stopping of water droplet spraying.
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