EP4476431A1 - Regelvorrichtung eines abgasführungsabschnitts eines abgasturboladers - Google Patents
Regelvorrichtung eines abgasführungsabschnitts eines abgasturboladersInfo
- Publication number
- EP4476431A1 EP4476431A1 EP23704243.7A EP23704243A EP4476431A1 EP 4476431 A1 EP4476431 A1 EP 4476431A1 EP 23704243 A EP23704243 A EP 23704243A EP 4476431 A1 EP4476431 A1 EP 4476431A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- section
- exhaust gas
- control device
- closing
- designed
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B37/00—Engines characterised by provision of pumps driven at least for part of the time by exhaust
- F02B37/02—Gas passages between engine outlet and pump drive, e.g. reservoirs
- F02B37/025—Multiple scrolls or multiple gas passages guiding the gas to the pump drive
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B37/00—Engines characterised by provision of pumps driven at least for part of the time by exhaust
- F02B37/12—Control of the pumps
- F02B37/18—Control of the pumps by bypassing exhaust from the inlet to the outlet of turbine or to the atmosphere
- F02B37/183—Arrangements of bypass valves or actuators therefor
Definitions
- the invention relates to a control device for an exhaust gas routing section of an exhaust gas turbocharger of the type specified in the preamble of patent claim 1.
- Exhaust gas routing sections for exhaust gas turbochargers which have a control device for controlling a fluid flowing through the exhaust gas routing section, generally exhaust gas, are known.
- the control device is provided for opening and closing a bypass channel in the flow-through exhaust gas routing section to bypass a turbine wheel of the exhaust gas routing section that is rotatably arranged in a wheel chamber of the exhaust gas routing section.
- the control device can be used to open or close a flow opening formed between two spiral channels of the exhaust gas routing section, so that the exhaust gas can flow from one spiral channel into the other and vice versa.
- the control device has a number of components which are connected to one another, it also being possible for individual components to move relative to one another. So knows a closing element of the control device, which is provided for closing the bypass channel and/or the throughflow opening, has possible mobility relative to the lever arm with respect to a lever arm of the control device designed to move the closing element and which receives the closing element at one end. This possible mobility is necessary so that, for example, when the lever arm is pivoted with the closing element, jamming in the exhaust gas routing section can be avoided.
- the mobility of the two components relative to one another causes wear and tear on the control device during operation of the exhaust gas turbocharger, which must at least be reduced.
- a control device for an exhaust gas turbocharger can be found in published application DE 10 2017 202 132 A1, which has a closing element which is accommodated on a lever arm of the control device.
- the lever arm is designed to protrude into a cavity in the closing element.
- one end of the lever arm, which protrudes into the cavity is designed in sections to bring about contact with the closing element.
- the end of the lever arm has guide elements with guide surfaces that can come into contact with the closing element.
- a control device for an exhaust gas turbocharger can also be found in published application DE 10 2015 011 256 A1, which has a closing element and a lever arm protruding into the closing element, the end of the lever arm having a conical and a cylindrical guide element, which are designed to bring about a slidable contact are.
- the object of the present invention is to provide an improved control device for an exhaust gas routing section of an exhaust gas turbocharger.
- a control device according to the invention for an exhaust gas routing section of an exhaust gas turbocharger has a locking device comprising a locking element and an element lever, the locking device being pivotable about an axis of rotation.
- the closing element is designed to open and close a first flow cross section of the exhaust gas guide section, the first flow cross section being formed in a partition wall located between a first spiral channel of the exhaust gas guide section and a second spiral channel of the exhaust gas guide section.
- the exhaust gas routing section has a second flow cross section, which is assigned to a bypass channel formed in the exhaust gas routing section, which is designed to bypass an inflow of a turbine wheel formed in the exhaust gas routing section.
- the closing element has a first element section for closing the first flow cross section and a second element section which can be used for closing the second flow cross section.
- the element lever is designed to have an arm section designed to engage in a cavity of the closing element.
- the cavity has an inner surface and the arm portion has an outer surface formed opposite the inner surface.
- an inner lateral surface of the inner surface and a lateral surface of the outer surface are designed to be identical in shape while having different dimensions, the lateral surface having at least two different lateral sections.
- a movement gap is formed between the inner surface and the outer surface, which is formed as a function of a position of the control device.
- the inner surface and the outer surface can be designed depending on the operating points of a drive assembly connected to the exhaust gas turbocharger.
- the arm section is designed to be supported axially and/or radially on a cover element of the closing device, so that it is securely accommodated in the cavity of the closing element.
- the inner lateral surface and the lateral surface preferably have at least one section in the shape of a truncated cone.
- the arm section is designed to extend along the longitudinal axis, starting from its base surface, which is formed opposite a cavity base of the closure element, at least to a closure surface of the second element section, so that preferred tightness can be achieved.
- a first transition section which is formed between the first casing section and the second casing section, is particularly advantageously configured to connect the two casing sections to one another in order to bring about a continuous progression of the casing surface along the longitudinal axis. This allows the arm section to slide off the closing element in an unimpeded manner, with the first transition section also advantageously having a curved design. If the cavity floor has a groove at least on its floor edge, which is formed adjacent to the first casing section, further improved sliding and thus a further reduction in wear can be achieved.
- the arm portion may be secured by a pin formed extending from the cavity floor along the longitudinal axis.
- control device according to the invention is designed with reduced wear even at high temperatures, that heat transfer from the closing element into the element lever is reduced, which leads to lower component temperatures.
- a simple and cost-effective production, in particular in a casting process is possible due to the simply designed contours of the closing element and the element lever, in particular their mutually contacting surfaces.
- cup-shaped configurations of the closing element and the arm section lead to a weight-reduced control device.
- FIG. 2 shows a perspective view of a locking device of a control device according to the invention of an exhaust gas turbocharger in a first exemplary embodiment
- FIG. 3 in a section like the locking device. figure 2,
- FIG. 4 like the locking device in a further section. figure 2,
- FIG. 5 in a top view like the locking device. figure 2,
- FIG. 6 shows a section through the closing device of the control device according to the invention in a second exemplary embodiment
- FIG. 7 in a detailed view VII the locking device like. figure 6,
- FIG 9 shows the control device according to the invention in a third exemplary embodiment.
- a wheel chamber not shown formed, in which a turbine wheel, not shown, is rotatably accommodated.
- the exhaust gas routing section 1 is connected to an exhaust manifold 6 of the internal combustion engine 7, so that the exhaust gas of the internal combustion engine 7 can enter the spiral ducts 4, 5 via the inlet duct 3 in order to act on the turbine wheel.
- a control device 8 for separating and connecting the first spiral channel 4 and the second spiral channel 5 is arranged in the exhaust gas routing section 1.
- the control device 8 has a closing device 9 comprising a closing element 10 and an element lever 11, the element lever 11 being designed for pivoting the closing element 10 by a pivoting angle.
- the closing element 10 is arranged in a flow opening 12, which is designed so that the two spiral channels 4, 5 can flow through one another.
- the closed position of the closing element 10 In a first position, the closed position of the closing element 10, as shown in FIG.
- the exhaust gas of the internal combustion engine 7 flows through the two spiral channels 4 , 5 , with a first part of the exhaust gas flowing through the first spiral channel 4 and a second part of the exhaust gas flowing through the second spiral channel 5 .
- the flow opening 12 is fully open and exhaust gas can flow from the first spiral channel 4 into the second spiral channel 5 and vice versa. That is, exhaust gas from the one spiral channel 4; 5 into the other spiral channel 5; 4 over the Flow opening 12, which has a first flow cross section 13, can overflow.
- the closing element 10 is to be positioned between the first position and the second position in further intermediate positions, so that the first flow cross section 13 can be adapted to a corresponding need to achieve the best possible efficiency of the exhaust gas turbocharger 2 according to the exhaust gas quantity flowing through.
- the closing element 10 is designed to have a pot-shaped outer contour 14 .
- the closing element 10 has a first element section 15 for closing the first flow cross section 13 and a second element section 16 which can be used to close a second flow cross section 17 formed in the exhaust gas routing section 1 .
- the second flow cross section 17 is provided for flow around the turbine wheel. In other words, this means that the exhaust gas flowing through the second flow cross section 17 is routed past the turbine wheel and the turbine wheel is not acted upon by the exhaust gas flowing through the second flow cross section 17 .
- the second flow cross section 17 is formed in a bypass channel 18, which is also commonly referred to as a so-called wastegate channel.
- the locking device 9 is designed to be pivotable about an axis of rotation 19 .
- the locking element 10 shown in Figures 2 to 7 of the control device 8 according to the invention according to a first and a second exemplary embodiment also has an approximately pot-shaped outer contour 14, with an arm section 21 of the element lever 11, which faces the locking element 10, being formed in a cavity 20 of the locking element 10 is, is arranged engagingly.
- the closing device 9 designed according to the first exemplary embodiment also has the arm section 21 in the form of a pot.
- the arm section 21 can be inserted into the closing element 10 while forming a movement gap 22 , the movement gap 22 being formed between an inner surface 23 of the cavity 20 and an outer surface 24 of the arm section 21 .
- the inner surface 23 and the outer surface 24 contact one another in sections depending on a position of the locking device 9 .
- Which parts of the inner surface 23 now contact which parts of the outer surface 24 and the size of them and the movement gap 22 differs from position to position of the closing device 9 .
- the movement gap 22 lying between the inner surface 23 and the outer surface 24 is formed depending on a position of the control device 8 .
- the inner surface 23 is designed to be approximately, but not completely, complementary to the outer surface 24 .
- the inner surface 23 and the outer surface 24 are designed to be identical in shape while having different dimensions.
- the closing element 10 has its second element section 16 which, in order to close the second flow cross-section 17 , has a closing surface 25 which is designed to face away from a cover surface 26 of the second element section 16 .
- a jacket surface 31 of the outer surface 24 has two jacket sections that are designed differently from one another, a first jacket section 32 and a second jacket section 33.
- the two jacket sections 32, 33 are designed in accordance with the jacket surfaces of truncated cones, whose top surfaces, i.e. the surfaces with a smaller diameter, the cavity floor 28 are arranged facing. This results in a widening of the lateral surface 31 starting from the hollow floor 28.
- a bottom surface 34 of the outer surface 24, which is arranged opposite the hollow floor 28, is flat according to the first exemplary embodiment.
- an inner lateral surface 44 of the inner surface 23 and the lateral surface 31 of the outer surface 24 are identical in shape with different dimensions, the lateral surface 31 having at least two different sections, the first lateral section 32 and the second lateral section 33 .
- the locking device 9 is shown in a plan view according to the first embodiment.
- the element lever 11 When the element lever 11 is rotated in the direction of the arrow, the movement gap 22 between the cavity floor 28 and the floor surface 34 is enlarged until at most the section surface 30 abuts against the cover element 29, as a result of which the arm section 21 is supported axially and radially on the cover element 29 , Wherein due to an asymmetrical application of force to the arm section 21, the latter executes a tilting movement in the cavity 20 in the direction of the movement arrow shown in FIG.
- the tilting movement which can also be referred to as a coordinated tilting movement, since it is limited due to the corresponding design of at least the inner surface 23 and the outer surface 24 and preferably the bottom surface 34 and/or the cavity floor 28 .
- the maximum tilting of the closing element 10 relative to the arm section 21 should preferably not exceed 1.35°. So that this maximum tilting can be maintained, in addition to the axial securing of the arm section 21 with the aid of the cover element 29, a first angle a is formed between the jacket sections 32, 33, which, in relation to a virtual plane E, which is parallel to the bottom surface 34 forms, preferably has a value in a value range between 91° and 120° and preferably 95°.
- the arm section 21 extends along the longitudinal axis 27 at least over a first length L1, which corresponds to an axial distance between the closing surface 25 and the virtual plane E.
- the arm section 21 extends along the longitudinal axis 27 to the closing surface 25 over a second length L2, so that an axial extent of the first jacket section 32 corresponds to a difference between the second length L2 and the first length L1.
- the cover element 29 is arranged with its lower surface 41, which is formed opposite the section surface 30, at an axial distance with a third length L3, with a further movement gap 42 between the cover element 29 and the arm section 21, in particular its section surface 30 is formed, in particular if the bottom surface 34 contacts the cavity floor 28, but with a fourth length L4 over which the arm section 21 extends, starting from the virtual plane E along the longitudinal axis 27, which is greater than the first length L1 and is smaller as a sum of the first length L1 and the third length L3.
- the second length L2 is preferably greater than the first length L1, which in a preferred exemplary embodiment is 80% of the second length L2.
- the first casing section 32 is inclined relative to the bottom surface 34 at a second angle ⁇ , which basically has a value that is greater than the value of the first angle ⁇ , and is preferably in a value range between 120° and 150°, more preferably one value of 135°.
- first transition section 35 which connects the two jacket sections 32, 33 to one another in such a way that the jacket surface 31 runs continuously along the longitudinal axis 27.
- first transition section 35 is curved.
- a second transition section 38 is formed between a first inner surface section 36 of the inner lateral surface 44, which is formed opposite the first lateral section 32, and a second inner surface section 37 of the inner lateral surface 44, which is arranged opposite the second lateral section 33 24 is adapted to the first transition section 35 .
- the cavity floor 28 has a groove 40, which is designed in the form of an annular groove in the present exemplary embodiment, at least on its floor edge 39, which is designed to adjoin the first casing section 32.
- the control device 8 according to the invention is shown according to the second embodiment.
- the arm portion 21 is secured by means of a pin 43, which is formed starting from the cavity floor 28 of the closure element 10 along the longitudinal axis 27 extending.
- Fig. 7 is in a Detailed view VII shows the closing device 9 of the control device 8 according to the invention in the region of the transition sections 35, 38.
- the virtual plane E is arranged intersecting the first transition section 35 in the axial direction along the longitudinal axis 27 .
- the lateral surface 31 is to be understood as meaning at least the lateral surface of the arm section 21 which is configured to extend in the axial direction along the longitudinal axis 27 starting from the bottom surface 34 over the second length L2. This also applies to the inner lateral surface 44. In other words, this means that the lateral surfaces 31, 44 can make contact at any point over the second length L2, at least in the axial direction.
- the closing surface 25 is designed to be inclined in relation to the longitudinal axis 27, as illustrated in FIG.
- the second element section 16 could also be hollow or at least partially hollow.
- the control device 8 now comprises a rotationally symmetrical surface formed between the closing element 10 and the arm section 21 , which implements an axial introduction of force, a concentric positioning and a radial stop of the closing element 10 .
- the tendency of the closing element 10 and the arm section 21 to wear, which occurs as a result of pressure pulsations during operation of the exhaust gas turbocharger 2 can be eliminated by a conical guide, put simply.
- An axial contact surface formed between cavity floor 28 and floor surface 34 is passed on to bring about a damage-free introduction of force.
- An external radial portion of a total contact surface between the closing element 10 and the arm section 21 is decisive for bringing about reduced mobility initiated by pressure pulsations during operation. The force pulsation is thus minimized overall in an overall kinematics of the control device 8 according to the invention.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Supercharger (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102022103039.3A DE102022103039B4 (de) | 2022-02-09 | 2022-02-09 | Regelvorrichtung eines Abgasführungsabschnitts eines Abgasturboladers |
| PCT/DE2023/100074 WO2023151749A1 (de) | 2022-02-09 | 2023-01-31 | Regelvorrichtung eines abgasführungsabschnitts eines abgasturboladers |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP4476431A1 true EP4476431A1 (de) | 2024-12-18 |
| EP4476431B1 EP4476431B1 (de) | 2026-04-01 |
Family
ID=85222183
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP23704243.7A Active EP4476431B1 (de) | 2022-02-09 | 2023-01-31 | Regelvorrichtung eines abgasführungsabschnitts eines abgasturboladers |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US12312994B2 (de) |
| EP (1) | EP4476431B1 (de) |
| JP (1) | JP2025505011A (de) |
| CN (1) | CN118613639A (de) |
| DE (1) | DE102022103039B4 (de) |
| WO (1) | WO2023151749A1 (de) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102023004019A1 (de) * | 2023-10-06 | 2025-04-10 | Mercedes-Benz Group AG | Ventileinrichtung für eine Turbine eines Abgasturboladers, Turbine für ein Abgasturbolader sowie Kraftfahrzeug |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102020123177A1 (de) * | 2020-09-04 | 2022-03-10 | Ihi Charging Systems International Gmbh | Ventilvorrichtung eines Abgasführungsabschnitts eines Abgasturboladers und Abgasführungsabschnitt eines Abgasturboladers |
| DE102020123179A1 (de) * | 2020-09-04 | 2022-03-10 | Ihi Charging Systems International Gmbh | Ventilvorrichtung eines Abgasführungsabschnitts eines Abgasturboladers und Abgasführungsabschnitt eines Abgasturboladers |
| DE102021117020A1 (de) * | 2021-07-01 | 2023-01-05 | Ihi Charging Systems International Gmbh | Regelvorrichtung eines Abgasführungsabschnitts eines Abgasturboladers |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102015011256B4 (de) | 2015-08-25 | 2025-08-14 | Mercedes-Benz Group AG | Turbine für einen Abgasturbolader |
| JP6827476B2 (ja) * | 2016-02-23 | 2021-02-10 | アイ・エイチ・アイ チャージング システムズ インターナショナル ゲーエムベーハー | 排気タービン式過給機のための制御装置 |
| DE102017202132B4 (de) | 2017-02-10 | 2022-03-03 | Vitesco Technologies GmbH | Klappeneinrichtung zum Öffnen und Schließen eines Wastegatekanals in einem Turbinengehäuse eines Turboladers sowie Turbolader |
| DE112018003726A5 (de) * | 2017-07-21 | 2020-04-16 | Ihi Charging Systems International Gmbh | Regelvorrichtung für einen Abgasturbolader |
| DE202018101705U1 (de) * | 2018-03-27 | 2018-04-20 | Borgwarner Inc. | Ventilanordnung für mehrflutige Turbine |
| WO2022048706A1 (de) * | 2020-09-04 | 2022-03-10 | Ihi Charging Systems International Gmbh | Ventilvorrichtung eines abgasführungsabschnitts eines abgasturboladers und abgasführungsabschnitt eines abgasturboladers |
-
2022
- 2022-02-09 DE DE102022103039.3A patent/DE102022103039B4/de active Active
-
2023
- 2023-01-31 JP JP2024546238A patent/JP2025505011A/ja active Pending
- 2023-01-31 CN CN202380018393.6A patent/CN118613639A/zh active Pending
- 2023-01-31 WO PCT/DE2023/100074 patent/WO2023151749A1/de not_active Ceased
- 2023-01-31 US US18/723,225 patent/US12312994B2/en active Active
- 2023-01-31 EP EP23704243.7A patent/EP4476431B1/de active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102020123177A1 (de) * | 2020-09-04 | 2022-03-10 | Ihi Charging Systems International Gmbh | Ventilvorrichtung eines Abgasführungsabschnitts eines Abgasturboladers und Abgasführungsabschnitt eines Abgasturboladers |
| DE102020123179A1 (de) * | 2020-09-04 | 2022-03-10 | Ihi Charging Systems International Gmbh | Ventilvorrichtung eines Abgasführungsabschnitts eines Abgasturboladers und Abgasführungsabschnitt eines Abgasturboladers |
| DE102021117020A1 (de) * | 2021-07-01 | 2023-01-05 | Ihi Charging Systems International Gmbh | Regelvorrichtung eines Abgasführungsabschnitts eines Abgasturboladers |
Non-Patent Citations (1)
| Title |
|---|
| See also references of WO2023151749A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2023151749A1 (de) | 2023-08-17 |
| DE102022103039B4 (de) | 2024-09-05 |
| US12312994B2 (en) | 2025-05-27 |
| CN118613639A (zh) | 2024-09-06 |
| US20250059906A1 (en) | 2025-02-20 |
| EP4476431B1 (de) | 2026-04-01 |
| DE102022103039A1 (de) | 2023-08-10 |
| JP2025505011A (ja) | 2025-02-19 |
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