WO2001046575A1 - Turbocompresseur variable - Google Patents

Turbocompresseur variable Download PDF

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Publication number
WO2001046575A1
WO2001046575A1 PCT/JP2000/009021 JP0009021W WO0146575A1 WO 2001046575 A1 WO2001046575 A1 WO 2001046575A1 JP 0009021 W JP0009021 W JP 0009021W WO 0146575 A1 WO0146575 A1 WO 0146575A1
Authority
WO
WIPO (PCT)
Prior art keywords
plate
nozzle
housing
side plate
turbine
Prior art date
Application number
PCT/JP2000/009021
Other languages
English (en)
Japanese (ja)
Inventor
Koji Matsumoto
Original Assignee
Mitsubishi Heavy Industries, Ltd.
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 Mitsubishi Heavy Industries, Ltd. filed Critical Mitsubishi Heavy Industries, Ltd.
Publication of WO2001046575A1 publication Critical patent/WO2001046575A1/fr

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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
    • F02B37/12—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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies

Definitions

  • the present invention relates to a variable turbocharger, and more particularly, to an improvement of a variable turbocharger.
  • a turbocharger that rotates a turbine with exhaust gas from the internal combustion engine and pressurizes air supplied to the internal combustion engine with a compressor provided coaxially with the turbine is effective. Is installed in the internal combustion engine. However, since the flow rate of the exhaust gas varies depending on the engine speed of the internal combustion engine, a mismatch occurs between the flow rate of the exhaust gas actually supplied from the internal combustion engine and the flow rate of the exhaust gas that meets the optimal operating conditions of the turbocharger. In order to compensate for this inconsistency and achieve the full performance of the turbocharger, a variable turbocharger that adjusts the flow of exhaust gas in the turbine compartment of the Yuichi Pocharger according to the operating conditions of the internal combustion engine. Is being developed.
  • FIG. 7 shows a partially enlarged cross-sectional view of a turbine nozzle portion of a variable turbocharger according to the prior art.
  • a turbine 2 228 has a rotating shaft 2 32 rotatably supported by a housing 220 of the variable turbocharger. Exhaust gas from the internal combustion engine is introduced into the housing 220 from an intake port of the variable turbocharger, and a scroll passage 2 26 defined in the housing 220 and a bin 2 It is supplied to the evening bin 228 via a nozzle section 210 forming an inlet to 280. The exhaust gas supplied to the turbine 228 is discharged from the exhaust port after driving the turbine 228.
  • the nozzle part 210 is provided with a mounting plate 202 fixed to the housing 220, A plurality of nozzle vanes 204 are defined by a side plate 206 attached to the mounting plate 202 by a support port 208, and a plurality of nozzle vanes 204 are provided therebetween in a circumferential direction on the outer periphery of the turbine 222. Are arranged at equal intervals (at equal angular positions).
  • Each of the plurality of nozzle vanes 204 has a shaft portion 204a, and the mounting plate 2 is rotatable between the open position and the closed position by the shaft portion 204a. It is supported on 0-2.
  • a radially inner side of the side plate 206 seals the exhaust gas supplied to the turbine 228 and a back plate for shielding the heat so that the heat is not transmitted to the bearing portion supporting the rotating shaft 232. 2 16 are provided.
  • variable turbocharger since the side plate 206 is heated by the heat of the supplied exhaust gas and thermally deformed, a gap is provided between the side plate 206 and the housing 220 at a portion indicated by an arrow B in FIG. Have been. For this reason, in the variable turbocharger according to the prior art, a part of the exhaust gas supplied to the scroll passage 226 flows from the gap between the housing 220 and the outer peripheral portion of the side plate 206 to the nozzle portion. It bypasses 210 and passes through the back side of the side plate 206, and is supplied to the bin 288 in the evening. As described above, in the related art, there is a problem that the efficiency of the variable evening pot charger is reduced due to the exhaust gas supplied to the evening bin 228 without passing through the nozzle unit 210. Disclosure of the invention
  • An object of the present invention is to solve such problems of the prior art, and it is an object of the present invention to reduce or eliminate exhaust gas supplied to a bin from the back of a side plate by bypassing a nozzle portion.
  • the present invention provides a turbine rotatably supported around a predetermined axis in a housing, a plurality of nozzle vanes disposed in a nozzle portion of the turbine in the housing, and a plurality of lever plates.
  • the nozzle vane is connected to a plurality of nozzle vanes and is rotatable about the rotation axis of the evening bin in the housing in order to operate the nozzle vane continuously in synchronization between the open position and the closed position.
  • a nozzle provided with a link plate provided, and an actuator connected to the link plate via a transmission mechanism provided outside the housing.
  • a nozzle vane arrangement space forming the nozzle portion is separated from each other in a rotation axis direction of the turbine by a nozzle plate and a side plate.
  • the nozzle plate is fixed to the housing, and the side plate is connected to the nozzle plate by a plurality of support ports traversing the nozzle portion.
  • the variable turbocharger includes a back plate that comes into close contact with an inner surface of an inner peripheral portion of the side plate, and a close contact between the inner peripheral portion of the side plate and the back plate causes the side plate to be closed.
  • An exhaust gas passing outside and bypassing the nozzle portion is sealed, and preferably, the side plate includes an annular plate portion extending in a radial direction in a plane perpendicular to a center axis of the turbine, A cylindrical portion extending from the inner edge of the plate portion to the compressor side of the turbocharger in the axial direction, wherein the cylindrical portion is fitted to an inner peripheral surface of a cutout formed inside the housing.
  • FIG. 1 is an external side view of a variable turbocharger to which the present invention is applied.
  • FIG. 2 is a sectional view of a turbine casing portion of the variable turbocharger of FIG.
  • FIG. 3 is a front view showing a part of the variable button bogie of FIG. 1 cut away.
  • FIG. 4 is a partially enlarged view of FIG. 3, and is a view showing an engagement portion between a transmission mechanism for transmitting the operation of the actuator to the link plate and a link plate.
  • FIG. 5 is a plan view of the link plate.
  • FIG. 6 is an exploded view of a transmission mechanism for transmitting the operation of the actuator to the link plate.
  • FIG. 7 is a partially enlarged cross-sectional view of a nozzle portion according to a conventional technique.
  • variable turbocharger 10 to which the present invention is applied.
  • the variable displacement pot 10 includes a housing consisting of a turbine housing 20, a compressor housing 40, and a main housing 30 between the turbine housing 20 and the compressor housing 40.
  • Yuichi Bin housing 20 includes an intake port 22 and an exhaust port 24, and compressor housing 40 includes a suction port 44 and a discharge port 42.
  • an actuator 50 for driving a nozzle vane described later is provided outside the housings 20, 30, 40.
  • the actuator 50 is operated by reciprocating the rod 52 back and forth by using pneumatic pressure, in particular, the suction negative pressure of the internal combustion engine (not shown) to which the variable valve 10 is attached. It is an overnight.
  • pneumatic pressure in particular, the suction negative pressure of the internal combustion engine (not shown) to which the variable valve 10 is attached. It is an overnight.
  • the rotary shaft 32 of the evening bin 28 is rotatably supported at the center of the main housing 30 side, and is mounted at one end of the evening bin rotating shaft 32 inside the evening bin housing 20.
  • the attached turbine 28 is installed. It goes without saying that a compressor impeller (not shown) disposed in the compressor housing 40 is attached to the other end of the rotating shaft 32.
  • the exhaust gas from the internal combustion engine is introduced into the turbine housing 20 from the intake port 22 shown in FIG.
  • the liquid is supplied to the bin 28 through a nozzle 100 forming an entrance to the bin 8.
  • the exhaust gas supplied to the turbine 28 is discharged from the exhaust port 24 after driving the bin 28.
  • the nozzle portion 100 is composed of a nozzle plate 102 fixed in a ring shape to the inner periphery of the vial housing 20 and a side plate attached to the nozzle plate 102 by a plurality of support bolts 108.
  • a plurality of nozzle vanes 104 are formed in a ring-shaped space defined by the plate 106 and the ring-shaped space formed between the plates 102 and 106. They are arranged at equal intervals (at equal angles) in the circumferential direction in a ring-shaped space centered on 28 rotation axes.
  • the side plate 106 is spaced apart from the nozzle plate 102 in the evening bin housing 20 in the axial direction on the main housing 30 side via a ring-shaped space.
  • the side plate 106 has an annular plate portion 106a that expands in a radial direction in a plane perpendicular to the central axis of the turbine 28, and a variable size plate that is axially variable from the inner edge of the plate portion 106a. It has an L-shaped cross-section on one side consisting of a cylindrical portion 106 b extending to the compressor side of the pot jar 10, and the cylindrical portion 106 b has a free end formed in the turbine housing 20 with a cutout 2. 0b is fitted on the inner peripheral surface.
  • the plate portion 106 a of the side plate 106 is disposed in a side plate receiving recess 20 a formed inside the turbine housing 20.
  • the outer peripheral surface of the plate portion 106a of the side plate 106 is taken into consideration.
  • a gap is formed between the inner peripheral surface of the side plate receiving concave portion 20a, and between the outer peripheral surface of the cylindrical portion 106b of the side plate 106 and the inner peripheral surface of the cutout portion 20b. Is provided.
  • a back plate 116 made of a sheet metal member is provided between the main housing 30 and the turbine housing 20.
  • Knock plate 1 16 has an annular flange 1 16 a extending radially in a plane substantially perpendicular to the center axis of turbine 28, and turbine 2 extending axially from the outer edge of flange 1 16 a.
  • the cylindrical portion 1 16 extending to the 8 side and closely contacting the outer peripheral surface of the cylindrical portion 106 b of the side plate 106, and the flange portion 116 a at the free end side of the cylindrical portion 116 b And a ring-shaped shielding part 116c provided substantially parallel to the flange part 116a. As shown in FIG.
  • the ring-shaped shielding portion 116c may not be parallel to the opposite flange portion 116a, but may be slightly recessed toward the compressor.
  • the flange portion 1 16 a is sandwiched and fixed between the main housing 30 and the evening bin housing 20, and exhaust gas in the turbine housing 20 is prevented. It is possible to prevent outflow to the outside and to prevent heat transfer from the turbine housing 20 to the main housing 30.
  • Each of the plurality of nozzle vanes 104 has a shaft 104a at a base end thereof, and is rotatable between an open position and a closed position by the shaft 104a. It is supported by the nozzle plate 102. As shown in FIGS. 3 and 4, the tip 104b of each shaft 104a of the nozzle vane 104 penetrates the nozzle plate 102 in the axial direction.
  • the nozzle vane 104 is connected (fixed) to each of a plurality of lever plates 114 (see Figs. 3 and 4) corresponding to the number of nozzle vanes 104, and the nozzle vanes follow the swing of the lever plate.
  • the pin 104 is configured to be rotatable by a predetermined angle via the shaft 104a.
  • Each of the lever plates 114 includes a through hole 114b for receiving the tip 104b of the shaft 104a, and a boss formed on the opposite side of the through hole 114b.
  • a shaft portion 114a, and the shaft portion 114a of the lever plate 114 is a long hole arranged at equal intervals in a circumferential direction on a peripheral portion of the link plate 112. It is rotatably supported by 1 1 2 d.
  • a cylindrical boss portion 102 a is formed on the exhaust port 24 side of the nozzle plate 102 opposite to the nozzle portion 100, and the boss portion 100 is formed.
  • An annular link plate 1 12 (see FIG. 5) is attached to 2 a so as to be rotatable about the rotation axis of the turbine 28.
  • the link plate 112 In order to receive the shaft portion 114a of the lever plate 114, the link plate 112 has elongated holes arranged at equal intervals in the circumferential direction on the peripheral edge of the link plate 112. 1 1 2 d is perforated.
  • the link plate 112 has a trapezoidal (tongue) protruding extension 112a on one side in the same plane.
  • the extension 1 1 2 a has a pair of engagement arms 1 1 2 c at its tip, bifurcated and having a U-shaped recess at the center, and a pair of engagement arms 1 A U-shaped receiving recess 1 1 2 b is formed in the recess between 1 2 c.
  • the variable aperture pot 10 further includes a transmission mechanism for transmitting the operation of the actuator 50 to the link plate 112.
  • the transmission mechanism is a link member 54 (see FIG. 1) connected to the distal end of the rod 52 via a rod 52 and a pin 50a of the actuator 50. 1) (see FIG. 1), a rocking member 120 connected to the link member 54 (see FIGS. 2 and 6), and a rocking member 120 disposed between the rocking member 120 and the link plate 112. It includes a mouthpiece member 140 and a piece 130 forming an engagement portion between the transmission mechanism and the link plate 112. Referring to FIG.
  • the rocking member 120 is provided with a rocking arm 122 and one end face of the rocking arm 122 extending along a predetermined axis O, and a bin housing 2 is provided.
  • a shaft portion 124 supported rotatably via 118, and a connecting portion 1 2 coaxially provided at the tip of the shaft portion 124 and connected so as not to move relative to the link member 54.
  • 8 and a pin portion 126 extending in parallel with the shaft portion 124 from the end surface of the swinging arm 122 opposite to the shaft portion 124.
  • the rocking member 120 can be integrally formed of a metal material, for example, stainless steel, preferably, austenitic stainless steel.
  • the swinging member 120 may have the swinging arm 122, the shaft portion 124, the connecting portion 128, and the pin portion 126 formed separately and welded to each other.
  • the piece 130 has a pair of flat portions 13 2 arranged parallel to and separated from each other, and a central portion 13 4 provided between the pair of flat portions 13 and connecting the flat portions 13 2. ing.
  • the central portion 1 3 4 between the pair of flat plate portions 1 3 2 has the engaging arm portion 1 1 of the link plate 1 1 2
  • a circumferential groove 1 36 for receiving 2c is formed.
  • the piece 130 has a cutout portion 1338 cut out including a central portion 134 on the radially inner side from one side thereof, and the cutout portion 1338 faces the cutout portion 1338. Both side surfaces form sliding surfaces parallel to each other. Notch 1
  • the roller 38 receives the roller member 140 attached to the pin portion 126 of the swing member 120, and Form.
  • the piece 130 can be formed from a metal material, for example, austenitic stainless steel.
  • the mouthpiece member 140 is formed in a substantially cylindrical shape having a center hole 144 having an inner diameter slightly larger than the outer diameter of the pin portion 126. It has an outer diameter slightly smaller than the distance between the 30 sliding surfaces.
  • the roller member 140 can be formed from a metal material, for example, martensitic stainless steel.
  • the pressure of the engine's negative pressure pump is controlled by an electromagnetic valve according to its rotational speed and accelerator opening, etc., and sent to the actuator 50 by actuation.
  • One night, 50 is activated.
  • the rod 52 moves forward and backward (moves right and left in Fig. 1) in the axial direction in response to the operation of the actuator 50.
  • the link member 54 rotates around the shaft portion 124 of the swinging member 120 accordingly. Referring to FIG. 1, the link member 54 indicated by a solid line is in contact with the port 56 a on the upper side of the stop member 56.
  • the link member 54 is positioned through the reservoir plate 114 and the shaft portion 114a, and each of the nozzle vanes 104 is located at the open position that provides the largest nozzle opening.
  • the actuator 50 moves the rod 52 backward.
  • the link member 54 moves to a position where it abuts against the lower port 56 b of the stop member 56 as shown by a dashed line, and at this time, the respective nozzle vanes 10 4 is stopped at the position that gives the smallest nozzle opening.
  • the linear motion of the rod 52 is converted to the rocking motion of the rocking member 120 via the link member 54, and as shown in FIGS. 4 and 6, the pin of the rocking member 120 is
  • the part 126 moves on an arc centered on the axis ⁇ of the shaft part 124.
  • the pin portion 126 and the mouth member 140 are moved between the roller member 140 and the sliding surface 138a in the cutout portion 130 of the block 130.
  • the link plate 1 1 2 is moved in the vertical direction relative to 1 3 0 in the vertical direction in the positional relationship of Fig. Rotate along the outer peripheral surface of the boss 102a of the nozzle plate 102 as the center.
  • the rocking member 1 2 Since the roller member 140 is disposed between the pin part 1 26 of No. 0 and the piece 130, the distance between the pin part 126 and the sliding surface 1 38 a of the piece 130 is This reduces the friction of the link plate, smoothens the operation of the link plate, and prevents the pin portion 126 and the sliding surface 138a from being worn away.
  • the outer peripheral surface of the cylindrical portion 116b of the back plate 116 is brought into close contact with the inner peripheral surface of the cylindrical portion 106b of the side plate 106, or This prevents a part of the exhaust gas from bypassing the nozzle portion 100 described above.
  • the back plate 1 16 can be formed by sheet processing such as sheet metal processing. By forming the back plate 1 16 from a thin plate, the back plate 1 1 It is possible to flexibly deform while maintaining the close contact between the outer peripheral surface of 6b and the inner peripheral surface of the cylindrical portion 106b of the side plate 106.
  • the back plate 116 may be formed by welding at least a part of the flange portion 116a, the cylindrical portion 116b, and the shielding portion 116c instead of sheet metal processing.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Supercharger (AREA)
  • Control Of Turbines (AREA)

Abstract

Turbocompresseur variable conçu pour acheminer des gaz d'échappement provenant de l'arrière d'une plaque latérale vers une turbine selon une trajectoire définissant une déviation autour de la partie buse du turbocompresseur variable. Ledit compresseur est caractérisé en ce que la partie buse (100) du turbocompresseur variable (10) est composée d'une plaque (102) de buse et d'une plaque latérale (106) connectée à la plaque (102) de buse par une pluralité de boulons (108) de support qui s'étendent transversalement dans la partie buse (100), la plaque de buse et la plaque latérale étant espacées l'une de l'autre dans le sens de l'axe de rotation d'une turbine (28). Ledit compresseur est encore caractérisé en ce qu'une plaque arrière (116) est placée en étroit contact avec la surface interne de la partie périphérique interne de la plaque latérale (106), le contact étroit entre ces deux surfaces constituant une barrière d'étanchéité pour les gaz d'échappement qui passent à l'extérieur de la plaque latérale (106) et sont déviés autour de la partie buse (100).
PCT/JP2000/009021 1999-12-20 2000-12-20 Turbocompresseur variable WO2001046575A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP36010199A JP2001173450A (ja) 1999-12-20 1999-12-20 可変ターボチャージャ
JP11/360101 1999-12-20

Publications (1)

Publication Number Publication Date
WO2001046575A1 true WO2001046575A1 (fr) 2001-06-28

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ID=18467910

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2000/009021 WO2001046575A1 (fr) 1999-12-20 2000-12-20 Turbocompresseur variable

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JP (1) JP2001173450A (fr)
WO (1) WO2001046575A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10907496B2 (en) 2016-05-27 2021-02-02 Ihi Corporation Turbocharger
CN113056596A (zh) * 2018-11-05 2021-06-29 株式会社丰田自动织机 涡轮增压器

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5140135B2 (ja) * 2004-05-06 2013-02-06 カミンズ インコーポレーテッド 可変幾何学的形態タービンを使用する内燃機関におけるあと処理システム用の排ガスの温度を決定する可変幾何学形態ターボ過給機及びシステム
JP2007231934A (ja) * 2006-02-02 2007-09-13 Ihi Corp 可変ノズル付きターボチャージャ
KR101021658B1 (ko) * 2008-08-12 2011-03-17 (주)계양정밀 가변노즐장치를 구비한 터보차져
JP2010138885A (ja) * 2008-12-15 2010-06-24 Toyota Motor Corp ターボチャージャ
JP2013174129A (ja) 2012-02-23 2013-09-05 Mitsubishi Heavy Ind Ltd ターボチャージャ
JP2013047525A (ja) * 2012-11-26 2013-03-07 Toyota Motor Corp ターボチャージャ
JP6463640B2 (ja) * 2015-01-27 2019-02-06 川崎重工業株式会社 舶用排気タービン
US10612411B2 (en) 2015-09-14 2020-04-07 Ihi Corporation Variable nozzle unit and variable displacement-type turbocharger

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08177509A (ja) * 1994-12-22 1996-07-09 Mitsubishi Heavy Ind Ltd 排気ターボ過給機の可変容量タービン
JPH11229887A (ja) * 1998-02-13 1999-08-24 Mitsubishi Heavy Ind Ltd ターボ過給機のガスシール構造

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08177509A (ja) * 1994-12-22 1996-07-09 Mitsubishi Heavy Ind Ltd 排気ターボ過給機の可変容量タービン
JPH11229887A (ja) * 1998-02-13 1999-08-24 Mitsubishi Heavy Ind Ltd ターボ過給機のガスシール構造

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10907496B2 (en) 2016-05-27 2021-02-02 Ihi Corporation Turbocharger
CN113056596A (zh) * 2018-11-05 2021-06-29 株式会社丰田自动织机 涡轮增压器
CN113056596B (zh) * 2018-11-05 2023-02-17 株式会社丰田自动织机 涡轮增压器

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