EP0939198A1 - Turbocompresseur entrainé par les gaz d'échappement pour un moteur à combustion interne - Google Patents

Turbocompresseur entrainé par les gaz d'échappement pour un moteur à combustion interne Download PDF

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Publication number
EP0939198A1
EP0939198A1 EP99100678A EP99100678A EP0939198A1 EP 0939198 A1 EP0939198 A1 EP 0939198A1 EP 99100678 A EP99100678 A EP 99100678A EP 99100678 A EP99100678 A EP 99100678A EP 0939198 A1 EP0939198 A1 EP 0939198A1
Authority
EP
European Patent Office
Prior art keywords
exhaust gas
gas turbocharger
die
guide
turbocharger according
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
Application number
EP99100678A
Other languages
German (de)
English (en)
Other versions
EP0939198B1 (fr
Inventor
Paul Löffler
Erwin Schmidt
Siegfried Sumser
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mercedes Benz Group AG
Original Assignee
DaimlerChrysler AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by DaimlerChrysler AG filed Critical DaimlerChrysler AG
Publication of EP0939198A1 publication Critical patent/EP0939198A1/fr
Application granted granted Critical
Publication of EP0939198B1 publication Critical patent/EP0939198B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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.
  • the guide grill In order to brake the internal combustion engine to maintain a high braking efficiency the guide grill is transferred to its stowed position, whereupon itself in the section between the cylinders and the exhaust gas turbocharger builds up an overpressure that leads to an increase in air mass leads in the cylinder and the compression of the gas in the cylinder counteracts.
  • exhaust gas flows through the at high speed Flow channels between the guide vanes and acted upon the turbine wheel, the power of which is transferred to the compressor which builds up excess pressure in the intake tract and feeds the cylinder.
  • the cylinder is therefore on the input side with increased boost pressure acted on the output side lies between the cylinder outlet and a quasi-static positive pressure for the exhaust gas turbocharger to the blowing off of the air compressed in the cylinder counteracts into the exhaust line.
  • braking mode In braking mode must thus the piston in the compression stroke against compression work the high overpressure in the exhaust system, causing a strong braking effect is achieved.
  • the publication DE 43 30 487 C1 also shows a turbine variable turbine geometry.
  • the turbine has a radial one and a semi-axial ring nozzle, being in the semi-axial Ring nozzle a fixed guide grill and in the radial Ring nozzle a variable guide vane with rotatable guide vanes is arranged.
  • On the fixed guide grill is also a streamlined contoured ring arranged, the lies between the semi-axial and the radial ring nozzle and a fixed, non-adjustable component of the turbine forms.
  • the invention is based on the problem of having an exhaust gas turbocharger low manufacturing and assembly costs with a braking function equip.
  • the engine braking power is due to the blocking or reduction the flow cross section with the help of the adjustable Leitgitters achieved an engine brake flap arranged behind the turbine on the other hand is not necessary or would even be disturbing, which frees up space.
  • the guide vane is expediently axially between the open position and the stowage position adjustable so that to transfer in the stowed position, the guide grill is only axially in the Flow channel must be moved.
  • the axially adjustable Guide grill is characterized by a simple kinematic Handling off.
  • Both the guide grid and the die are ring-shaped around the turbine wheel is formed around the ring nozzle of the usually spiral flow channel through which the exhaust gas from the Exhaust line of the turbine can be fed to shut off and build up the dynamic pressure required for the engine brake to be able to.
  • the guide vanes are in one Arranged ring and preferably held on a carrier ring, which ensures axial guidance in the die and by means of suitable control elements in the direction of the opening or the stowage position can be applied.
  • the carrier ring preferably has an approximately U-shaped cross section which is characterized by high stability and also both along the die and along the opposite wall in the housing of the exhaust gas turbocharger can be performed. That wall of the carrier ring of the guide vanes are fixed, compensating holes have to in the axial adjustment of the guide vane air cushion between this wall and the actuating movement and dismantle the housing of the exhaust gas turbocharger avoid.
  • a removable cover is preferably provided on the housing, via which the brake module, in particular the matrix, on the housing clamped and can be removed if necessary.
  • To be safe Anchoring is provided for the brake module, via which the die can be detachably attached to the housing.
  • the guide grid and / or the matrix can be used as investment casting or be designed as a sintered part, the high accuracy requirements sufficient and can be processed well.
  • a turbine impeller 3 is about an axis of rotation 18 rotatably mounted and is from the exhaust gas of the internal combustion engine driven.
  • the turbine impeller 3 is not one shown compressor coupled, the in the intake tract of Brennkrarftmaschine is arranged and the intake air is compressed.
  • the exhaust gas is transferred to the turbine impeller 3 via a housing 2 arranged flow channel 4, which is in the form of a spiral exhaust gas flow has supplied.
  • the radially inner section of the flow channel 4 forms an annular channel 19 a tapered diameter in relation to the flow channel 4, which results in a nozzle effect.
  • the exhaust gas flows out to the spiral flow channel 4 via the ring channel 19 Blades 20 of the turbine impeller 3 and moves this in Rotation.
  • the relaxed exhaust gas is through an outlet diffuser derived from the exhaust gas turbocharger 1.
  • a brake module 7 is arranged in the exhaust gas turbocharger 1 by means of which reduces the free flow cross section of the ring channel 19 can be, so that the flow of the exhaust gas from the Flow channel 4 to the blades 20 is obstructed and in the line section of the exhaust line between the cylinders and the exhaust gas turbocharger builds up an excess pressure which is applied during braking the internal combustion engine of the piston movement during the Counteracts compression strokes.
  • the brake module 7 consists of a guide grill 5, which between one releasing the flow cross section of the ring channel 19 Open position and a reducing the flow cross section Stowage position is adjustable, and a die 6 the guide vane 5 is axially movable.
  • the die 6 and the guide grid 5 are practically rotationally symmetrical constructed, the axis of rotation 18 of the turbine wheel 3 at the same time forms almost the axis of symmetry of the brake module.
  • the guide grid 5 has a plurality of rings arranged in a ring profiled guide vanes 8 on a support ring 9 are attached, which has a U-shaped cross section 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 axially applied, so that the Leitgitter 5 from the open position shown into the stowed position is transferred in the guide vanes 8 in the flow cross section of the ring channel 19 protrude.
  • the guide vanes 8 can expediently be moved so far into the ring channel 19, until the end face of the guide vanes 8 on the inner wall 21 of the ring channel 19 abuts.
  • the die 8 contains the one adjacent to the ring channel 19 Side passages 13 through which the guide vanes 8 are guided are. Between the guide 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 to allow unimpeded axial adjustment. In the passages 13 can be between two adjacent ones Guide vanes support struts of the die 6 run.
  • the guide vanes are on a wall 10 of the carrier ring 9 attached, in the wall 10 compensating holes 11th are introduced, in particular when adjusting from the Open position in the stowed position a gas escape to allow in the space between the wall 10 and the die 6 and to prevent resistance to the actuating movement. This also results in pressure equalization, so that the adjustment forces remain small.
  • the radially inner wall 22 of the die 6 forms one Contour in the transition between the wall of the flow channel 4 and the outlet diffuser 17. Between the blades 20 of the Turbine impeller 3 and the die 6 is a wheel gap to thermal expansions and damage to avoid the blades 20.
  • the brake module 7 In order to detachably attach the brake module 7 to the exhaust gas turbocharger, at the same time reliable positioning and reliable to be installed, the brake module 7 is to be mounted on a cover 16 clamped, the expediently with the outlet diffuser 17 one-piece 3-part forms. Furthermore, 6 Anchors 14, 15 are provided, via which the brake module on Housing 2 is held. A first anchor 14 in the form of a groove-shaped recess is on the flow channel 4th facing side of the die 6 provided in this recess engages a projection of the housing 2. Another Anchor 15 is on the axially opposite side in the radially inner portion of the die 6 arranged; the Anchoring 15 is formed as a circumferential paragraph, in the a projection of the cover 16 engages.
  • the guide grid and / or the die are as investment casting or designed as a sintered part, the high accuracy requirements justice.
  • a total of seven guide vanes 8 are uniform distributed over the circumference of the guide grill 5 and attached to the carrier ring 9.
  • the guide vanes 8 are fluidically optimized training. Between every two Adjacent vanes 8 are passages for the exhaust gas formed so that part of the pent-up exhaust gas the guide grill 5 can happen and at high speed on the Blades of the turbine impeller that drives the compressor hits whereupon air in the intake duct with pressure in the cylinders is promoted to increase the amount of air.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Supercharger (AREA)
EP99100678A 1998-02-11 1999-01-15 Turbocompresseur entrainé par les gaz d'échappement pour un moteur à combustion interne Expired - Lifetime EP0939198B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19805476A DE19805476C1 (de) 1998-02-11 1998-02-11 Abgasturbolader für eine Brennkraftmaschine
DE19805476 1998-02-11

Publications (2)

Publication Number Publication Date
EP0939198A1 true EP0939198A1 (fr) 1999-09-01
EP0939198B1 EP0939198B1 (fr) 2004-07-14

Family

ID=7857326

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99100678A Expired - Lifetime EP0939198B1 (fr) 1998-02-11 1999-01-15 Turbocompresseur entrainé par les gaz d'échappement pour un moteur à combustion interne

Country Status (3)

Country Link
US (1) US6224333B1 (fr)
EP (1) EP0939198B1 (fr)
DE (2) DE19805476C1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2831607A1 (fr) * 2001-10-31 2003-05-02 Daimler Chrysler Ag Turbocompresseur fonctionnant avec des gaz d'echappement, pour un moteur a combustion interne

Families Citing this family (10)

* Cited by examiner, † Cited by third party
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
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
WO2014045935A1 (fr) * 2012-09-18 2014-03-27 株式会社Ihi Surcompresseur à cylindrée variable et procédé pour fabriquer un carter pour surcompresseur à cylindrée variable
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

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0034915A1 (fr) * 1980-02-22 1981-09-02 Holset Engineering Company Limited Turbines à flux dirigé radialement vers l'intérieur
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
EP0654587A1 (fr) * 1993-11-19 1995-05-24 Holset Engineering Company Limited Turbine avec entrée à géométrie variable

Family Cites Families (13)

* Cited by examiner, † Cited by third party
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
GB8318489D0 (en) * 1983-07-08 1983-08-10 Holset Engineering Co Variable inlet area turbine
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
AU3693089A (en) * 1988-05-27 1989-12-12 Malcolm George Leavesley Turbocharger apparatus
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
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

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0034915A1 (fr) * 1980-02-22 1981-09-02 Holset Engineering Company Limited Turbines à flux dirigé radialement vers l'intérieur
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
EP0654587A1 (fr) * 1993-11-19 1995-05-24 Holset Engineering Company Limited Turbine avec entrée à géométrie variable

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2831607A1 (fr) * 2001-10-31 2003-05-02 Daimler Chrysler Ag Turbocompresseur fonctionnant avec des gaz d'echappement, pour un moteur a combustion interne
US6854272B2 (en) 2001-10-31 2005-02-15 Daimlerchrysler Ag Exhaust gas turbocharger for an internal combustion engine

Also Published As

Publication number Publication date
US6224333B1 (en) 2001-05-01
DE19805476C1 (de) 1999-10-07
DE59909925D1 (de) 2004-08-19
EP0939198B1 (fr) 2004-07-14

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