EP0939198B1 - Abgasturbolader für eine Brennkraftmaschine - Google Patents
Abgasturbolader für eine Brennkraftmaschine Download PDFInfo
- Publication number
- EP0939198B1 EP0939198B1 EP99100678A EP99100678A EP0939198B1 EP 0939198 B1 EP0939198 B1 EP 0939198B1 EP 99100678 A EP99100678 A EP 99100678A EP 99100678 A EP99100678 A EP 99100678A EP 0939198 B1 EP0939198 B1 EP 0939198B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- exhaust gas
- gas turbocharger
- matrix
- turbocharger according
- housing
- 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.)
- Expired - Lifetime
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D17/00—Regulating or controlling by varying flow
- F01D17/10—Final actuators
- F01D17/12—Final actuators arranged in stator parts
- F01D17/14—Final actuators arranged in stator parts varying effective cross-sectional area of nozzles or guide conduits
- F01D17/16—Final actuators arranged in stator parts varying effective cross-sectional area of nozzles or guide conduits by means of nozzle vanes
- F01D17/167—Final actuators arranged in stator parts varying effective cross-sectional area of nozzles or guide conduits by means of nozzle vanes of vanes moving in translation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D17/00—Regulating or controlling by varying flow
- F01D17/10—Final actuators
- F01D17/12—Final actuators arranged in stator parts
- F01D17/14—Final actuators arranged in stator parts varying effective cross-sectional area of nozzles or guide conduits
- F01D17/141—Final actuators arranged in stator parts varying effective cross-sectional area of nozzles or guide conduits by means of shiftable members or valves obturating part of the flow path
- F01D17/143—Final actuators arranged in stator parts varying effective cross-sectional area of nozzles or guide conduits by means of shiftable members or valves obturating part of the flow path the shiftable member being a wall, or part thereof of a radial diffuser
-
- 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
- F02B37/24—Control of the pumps by using pumps or turbines with adjustable guide vanes
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49316—Impeller making
- Y10T29/49318—Repairing or disassembling
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49316—Impeller making
- Y10T29/4932—Turbomachine making
Definitions
- the invention relates to an exhaust gas turbocharger for an internal combustion engine according to the preamble of claim 1.
- exhaust gas flows at high speed through the Flow channels between the vanes and acted upon the turbine wheel whose power is transferred to the compressor is, which builds up an overpressure in the intake tract and feeds to the cylinder.
- the cylinder is therefore the input side with increased boost pressure acted upon, the output side is between the cylinder outlet and the exhaust gas turbocharger a quasi-static overpressure on, the blowing of compressed air in the cylinder counteracts into the exhaust system.
- braking mode In braking mode must thus the piston in the compression stroke against compression work Do the high pressure in the exhaust system, creating a strong braking effect is achieved.
- the document DE 43 30 487 C1 shows a turbine with Variable turbine geometry.
- the turbine has a radial and a semi-axial annular nozzle, wherein in the semi-axial Ring nozzle a fixed guide grid and in the radial Ring nozzle a variable guide grid with rotatable vanes is arranged.
- At the fixed baffle is also arranged a streamlined contoured ring, the lies between the semi-axial and the radial annular nozzle and a fixed, non-adjustable component of the turbine forms.
- the document EP 0 034 915 A1 describes an exhaust gas turbocharger described whose variable turbine geometry to variable Adjustment of the effective turbine inlet cross-section an annular, axially displaceable guide grid with vanes, which in stowed position in the inlet cross section protrude and in opening position from the Inlet cross section are pulled out.
- the Leitgitter is held on a piston, which on a ring body, which bolted to the turbine housing and the turbine wheel radially surrounds, is mounted axially displaceable.
- the piston is located on the side facing away from the turbine wheel the annular body and is supported on its radial outer side on a sliding surface of the turbine housing.
- At the axial Adjustment of the piston must be faced with high frictional forces overcome the annular body and the sliding surface of the turbine housing become. The frictional forces can cause tilting lead the piston, whereupon the guide grid no longer adjusted can be.
- the invention is based on the problem, an exhaust gas turbocharger to further develop according to the preamble of claim 1, that improved guidance of the Leitgitters in the template is reached.
- the engine braking power is due to the blocking or reduction the flow cross-section with the help of the adjustable Leitgitters achieved, arranged behind the turbine engine brake flap is not required or would even be disturbing, whereby space is free.
- the guide grid is axially between the open position and the stowage position adjustable so that the transfer in stowed position, the guide grid only axially in the Flow channel must be moved.
- the axially adjustable Leitgitter is characterized by a simple kinematic Handling off.
- Both the guide grid and the die are ring-shaped
- the turbine wheel is designed to be the ring nozzle of the customary spiral flow channel through which the exhaust gas from the Exhaust line of the turbine can be supplied to shut off and build up the back pressure required for the engine brake to be able to.
- the vanes are in one Ring arranged and preferably held on a support ring, which provides for axial guidance in the die and by suitable adjusting elements in the direction of the opening or the stowage position can be acted upon.
- the carrier ring has an approximately U-shaped cross-section on, which is characterized by a high stability and also along the die as well as along the die opposite wall in the housing of the exhaust gas turbocharger can be performed.
- the wall of the carrier ring, on the vanes are fixed, can compensate holes have, in order to adjust the axial guide grid the adjusting movement hindering air cushion between this wall and dismantle or to the housing of the exhaust gas turbocharger avoid.
- a removable cover is preferably provided on the housing, over the the brake module, in particular the die on the housing clamped and can be removed if necessary. Too safe Anchorages are provided for receiving the brake module over which the die can be releasably secured to the housing.
- the guide grid and / or the die can be used as precision casting or be designed as a sintered part, the high accuracy requirements is enough and can be processed well.
- a turbine runner 3 is about a rotation axis 18 rotatably mounted and is the exhaust gas of the internal combustion engine driven.
- the turbine runner 3 is not with one coupled compressor shown in the intake of the Internal combustion engine is arranged and compresses the intake air.
- the exhaust gas is the turbine wheel 3 via a in the housing. 2 arranged flow channel 4, which takes the form of a spiral exhaust gas flow has supplied.
- the radially inner section the flow channel 4 forms an annular channel 19 a diameter that is tapered with respect to the flow channel 4, resulting in a nozzle effect.
- the exhaust gas flows out the spiral flow channel 4 via the annular channel 19 Blades 20 of the turbine runner 3 and puts this in Rotation.
- the expanded exhaust gas is via an outlet diffuser derived from the exhaust gas turbocharger 1.
- a brake module 7 is arranged by means of which reduces the free flow cross-section of the annular channel 19 can be, so that the flow of the exhaust gas from the Flow channel 4 is obstructed to the blades 20 and itself in the line section of the exhaust line between the cylinders and the exhaust gas turbocharger builds up an overpressure, which is in braking mode the internal combustion engine piston movement during the Counteracts compression stroke.
- the brake module 7 consists of a guide grid 5, the between one of the flow cross-section of the annular channel 19 releasing Opening position and a flow cross-section reducing Stowage position is adjustable, and a die 6, on the guide grid 5 is mounted axially movable.
- the matrix 6 and the guide grid 5 are practically rotationally symmetrical constructed, wherein the axis of rotation 18 of the turbine runner 3 at the same time almost forms the axis of symmetry of the brake module.
- the guide grid 5 has a plurality of annularly arranged profiled vanes 8, which on a support ring 9 are fixed, which constructed in cross section U-shaped can be and on the radially outer side 12 of the Die 6 is slidably mounted.
- the support ring 9 of the Leitgitters 5 are acted upon axially, so that the guide grid 5 from the open position shown in the stowed position is transferred, in which the guide vanes 8 in the flow cross-section of the annular channel 19 protrude.
- the guide vanes 8 can expediently be moved as far into the annular channel 19, to the end face of the guide vanes 8 on the inner wall 21st of the annular channel 19 is present.
- the die 8 contains on the annular channel 19 adjacent Side passages 13, through which the guide vanes 8 out are. Between the vanes 8 and the wall of the passages 13 is advantageously formed a small gap to thermal expansion of the guide vanes 8 to take into account and allow unimpeded axial displacement. In the passages 13 can between each two adjacent Guide vanes support struts of the die 6 run.
- the guide vanes are on a wall 10 of the carrier ring. 9 fastened, wherein in the wall 10 compensation holes 11th are introduced, in particular when adjusting from the Opening position in the stowed position an escape of the gas to allow in the space between the wall 10 and the die 6 and to prevent a resistance to the adjusting movement. In addition, this results in a pressure equalization, so that the adjusting forces remain small.
- the radially inner wall 22 of the die 6 forms a Contour in the transition between the wall of the flow channel 4 and the outlet diffuser 17. Between the blades 20 of the Turbinenraisingrads 3 and the die 6 is a Radspalt to to consider thermal strains and damage to avoid the blades 20.
- the brake module 7 of a cover 16th clamped expediently miz the outlet diffuser 17 a form a one-piece component.
- Anchors 14, 15 provided via the brake module on Housing 2 is held.
- a first anchoring 14 in the form of a groove-shaped recess is on the flow channel. 4 facing side of the die 6 provided in this recess engages a projection of the housing 2 a.
- Another Anchor 15 is on the axially opposite side in FIG arranged radially inward portion of the die 6; the Anchoring 15 is designed as a circumferential paragraph, in the a projection of the lid 16 engages.
- the guide grid and / or the die are as investment casting or designed as a sintered part, the high accuracy requirements does justice.
- a total of seven guide vanes 8 are uniform arranged distributed over the circumference of the guide grid 5 and attached to the carrier ring 9.
- the guide vanes 8 are fluidic Optimized trained. Between every two adjacent guide vanes 8 are passages for the exhaust gas formed so that a portion of the accumulated exhaust gas, the guide grid 5 can happen and at high speed on the Shovels of turbine runner impinging that drives the compressor, whereupon air in the intake passage with pressure in the cylinder is promoted to increase the amount of air.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Supercharger (AREA)
Description
- Fig. 1
- einen Schnitt durch die Turbine eines Abgasturboladers,
- Fig. 2
- eine Ansicht der Stirnseite eines Leitgitters.
Claims (11)
- Abgasturbolader für eine Brennkraftmaschine, mit einem in einem Gehäuse (2) des Abgasturboladers (1) angeordneten Turbinenlaufrad (3), dem über einen im Gehäuse (2) ausgebildeten Strömungskanal (4) Abgas zuführbar ist, und mit einem variablen, in einer Matrize (6) beweglich aufgenommenen Leitgitter (5), über das der Strömungsquerschnitt des Strömungskanals (4) einstellbar ist, wobei die Matrize (6) lösbar am Gehäuse (2) gehalten ist und die Außenkontur des Turbinenlaufrads (3) mit einem definierten Spalt umgibt,
dadurch gekennzeichnet, dass die Matrize (6) und das Leitgitter (5) ein ringförmiges, austauschbares Bremsmodul (7) bilden, wobei die Matrize (6) Durchgänge (13) für das Leitgitter (5) aufweist. - Abgasturbolader nach Anspruch 1,
dadurch gekennzeichnet, dass das Leitgitter (5) axial verstellbar ist. - Abgasturbolader nach Anspruch 1 oder 2,
dadurch gekennzeichnet, dass das Leitgitter (5) mehrere, einen Ring bildende Leitschaufeln (8) umfasst, die an einem dem Leitgitter (5) zugeordneten Trägerring (9) angeordnet sind. - Abgasturbolader nach Anspruch 3,
dadurch gekennzeichnet, dass der Trägerring (9) einen näherungsweise u-förmigen Querschnitt aufweist. - Abgasturbolader nach Anspruch 3 oder 4,
dadurch gekennzeichnet, dass in der den Leitschaufeln (8) zugewandten Wandung (10) des Trägerrings (9) Druck-Ausgleichsbohrungen (11) vorgesehen sind. - Abgasturbolader nach einem der Ansprüche 1 bis 5,
dadurch gekennzeichnet, dass das Leitgitter (5) auf der radial außenliegenden Seite (12) der Matrize (6) verstellbar angeordnet ist. - Abgasturbolader nach einem der Ansprüche 1 bis 6,
dadurch gekennzeichnet, dass an der Matrize (6) Verankerungen (14, 15) zur Befestigung des Bremsmodul (7) am Gehäuse (2) angeordnet sind. - Abgasturbolader nach einem der Ansprüche 1 bis 1,
dadurch gekennzeichnet, dass am Gehäuse (2) ein abnehmbarer Deckel (16) vorgesehen ist, über den die Matrize (6) am Gehäuse (2) festklemmbar ist. - Abgasturbolader nach Anspruch 8,
dadurch gekennzeichnet, dass der Deckel (16) mit einem das Abgas ableitenden Austrittsdiffusor (17) ein einteiliges Bauteil bildet. - Abgasturbolader nach einem der Ansprüche 1 bis 9,
dadurch gekennzeichnet, dass das Leitgitter (5) und/oder die Matrize (6) als Feingussteil ausgebildet ist. - Abgasturbolader nach einem der Ansprüche 1 bis 10,
dadurch gekennzeichnet, dass das Leitgitter (5) und/oder die Matrize (6) als Sinterteil ausgebildet ist.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19805476 | 1998-02-11 | ||
DE19805476A DE19805476C1 (de) | 1998-02-11 | 1998-02-11 | Abgasturbolader für eine Brennkraftmaschine |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0939198A1 EP0939198A1 (de) | 1999-09-01 |
EP0939198B1 true EP0939198B1 (de) | 2004-07-14 |
Family
ID=7857326
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP99100678A Expired - Lifetime EP0939198B1 (de) | 1998-02-11 | 1999-01-15 | Abgasturbolader für eine Brennkraftmaschine |
Country Status (3)
Country | Link |
---|---|
US (1) | US6224333B1 (de) |
EP (1) | EP0939198B1 (de) |
DE (2) | DE19805476C1 (de) |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19816645B4 (de) * | 1998-04-15 | 2005-12-01 | Daimlerchrysler Ag | Abgasturboladerturbine |
GB9918072D0 (en) * | 1999-07-30 | 1999-10-06 | Alliedsignal Ltd | Turbocharger |
DE10020041C2 (de) * | 2000-04-22 | 2003-05-28 | Pierburg Gmbh | Bypassventilkörper für Turbo-Otto-Brennkraftmaschine |
DE10028751A1 (de) * | 2000-06-09 | 2001-12-13 | Daimler Chrysler Ag | Abgasturbine |
DE10153301B4 (de) * | 2001-10-31 | 2010-09-23 | Daimler Ag | Abgasturbolader für eine Brennkraftmaschine |
DE10233042A1 (de) | 2002-07-20 | 2004-02-05 | Daimlerchrysler Ag | Abgasturbolader für eine Brennkraftmaschine |
DE102004035044A1 (de) * | 2004-07-20 | 2006-03-09 | Daimlerchrysler Ag | Verdichter in einem Abgasturbolader für eine Brennkraftmaschine und Verfahren zum Betrieb eines Verdichters |
GB0811228D0 (en) * | 2008-06-19 | 2008-07-30 | Cummins Turbo Tech Ltd | Variable geometric turbine |
GB201015679D0 (en) | 2010-09-20 | 2010-10-27 | Cummins Ltd | Variable geometry turbine |
CN104471209B (zh) * | 2012-09-18 | 2018-06-08 | 株式会社Ihi | 可变容量型增压器以及可变容量型增压器用壳体的制造方法 |
CN104500156B (zh) * | 2014-12-29 | 2017-05-17 | 无锡康明斯涡轮增压技术有限公司 | 蜗壳出口结构 |
Family Cites Families (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB624777A (en) * | 1946-11-11 | 1949-06-16 | Power Jets Res & Dev Ltd | Improvements in or relating to stator casings for compressors and like machines |
US2861774A (en) * | 1950-02-16 | 1958-11-25 | Alfred J Buchi | Inlet control for radial flow turbines |
US2784675A (en) * | 1952-12-22 | 1957-03-12 | Borg Warner | Hydrodynamic coupling |
US3303998A (en) * | 1966-07-18 | 1967-02-14 | Gen Electric | Stator casing |
US4265589A (en) * | 1979-06-18 | 1981-05-05 | Westinghouse Electric Corp. | Method and apparatus for surge detection and control in centrifugal gas compressors |
EP0034915A1 (de) * | 1980-02-22 | 1981-09-02 | Holset Engineering Company Limited | Radial nach innen durchströmte Turbinen |
GB8318489D0 (en) * | 1983-07-08 | 1983-08-10 | Holset Engineering Co | Variable inlet area turbine |
CH668455A5 (en) * | 1984-06-29 | 1988-12-30 | Bbc Brown Boveri & Cie | Exhaust turbocharger with adjustable inlet - has blade ring on sleeve sliding on cylindrical surface |
US4741666A (en) * | 1985-12-23 | 1988-05-03 | Ishikawajima-Harima Jukogyo Kabushiki Kaisha | Variable displacement turbocharger |
DE3734386A1 (de) * | 1987-10-10 | 1989-04-20 | Daimler Benz Ag | Abgasturbolader fuer eine brennkraftmaschine |
DE68928865T2 (de) * | 1988-05-27 | 1999-07-01 | Malcolm George Bow London Leavesley | Turbolader |
US5181826A (en) * | 1990-11-23 | 1993-01-26 | General Electric Company | Attenuating shroud support |
DE4330487C1 (de) * | 1993-09-09 | 1995-01-26 | Daimler Benz Ag | Abgasturbolader für eine Brennkraftmaschine |
EP0654587B1 (de) * | 1993-11-19 | 1999-01-20 | Holset Engineering Company Limited | Turbine mit variabler Einlassgeometrie |
DE19543190C2 (de) * | 1995-11-20 | 1998-01-29 | Daimler Benz Ag | Motorbremse für eine aufgeladene Brennkraftmaschine |
US5941684A (en) * | 1997-06-10 | 1999-08-24 | Holset Engineering Company Ltd. | Variable geometry turbine |
-
1998
- 1998-02-11 DE DE19805476A patent/DE19805476C1/de not_active Expired - Fee Related
-
1999
- 1999-01-15 EP EP99100678A patent/EP0939198B1/de not_active Expired - Lifetime
- 1999-01-15 DE DE59909925T patent/DE59909925D1/de not_active Expired - Lifetime
- 1999-02-11 US US09/248,272 patent/US6224333B1/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
DE59909925D1 (de) | 2004-08-19 |
US6224333B1 (en) | 2001-05-01 |
EP0939198A1 (de) | 1999-09-01 |
DE19805476C1 (de) | 1999-10-07 |
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