WO2016136313A1 - Turbocharger and manufacturing method therefor - Google Patents

Turbocharger and manufacturing method therefor Download PDF

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Publication number
WO2016136313A1
WO2016136313A1 PCT/JP2016/050856 JP2016050856W WO2016136313A1 WO 2016136313 A1 WO2016136313 A1 WO 2016136313A1 JP 2016050856 W JP2016050856 W JP 2016050856W WO 2016136313 A1 WO2016136313 A1 WO 2016136313A1
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WO
WIPO (PCT)
Prior art keywords
inner cylinder
turbocharger
turbine
exhaust guide
exhaust
Prior art date
Application number
PCT/JP2016/050856
Other languages
French (fr)
Japanese (ja)
Inventor
悟 横嶋
飯島　徹
Original Assignee
カルソニックカンセイ株式会社
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Publication of WO2016136313A1 publication Critical patent/WO2016136313A1/en

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    • 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
    • F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
    • 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
    • F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
    • F01D25/24—Casings; Casing parts, e.g. diaphragms, casing fastenings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/08—Other arrangements or adaptations of exhaust conduits
    • 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
    • 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
    • F02B39/00—Component parts, details, or accessories relating to, driven charging or scavenging pumps, not provided for in groups F02B33/00 - F02B37/00
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
    • F02C7/00—Features, components parts, details or accessories, not provided for in, or of interest apart form groups F02C1/00 - F02C6/00; Air intakes for jet-propulsion plants
    • 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 turbocharger mounted on a vehicle or the like and a manufacturing method thereof.
  • Patent Document 1 Various turbochargers that increase the intake air to the internal combustion engine using the flow of exhaust gas from the internal combustion engine have been proposed (Patent Document 1 below).
  • a twin turbo 100 shown in FIG. 5 includes a turbocharger 101 having a turbine that is rotated by exhaust from an internal combustion engine, an exhaust collecting pipe 102 that is arranged downstream of the turbocharger 101 and into which exhaust flows, and a turbocharger 101
  • the compressor 103 which takes in the external intake air by rotating a turbine, and the bellows pipe 104 arrange
  • turbocharger 101 Since high temperature exhaust gas flows into the turbocharger 101 from the internal combustion engine, the turbocharger 101 is displaced by thermal expansion. However, since the bellows tube 104 is disposed on the downstream side of the turbocharger 101, displacement due to thermal expansion of the turbocharger 101 is allowed (see FIG. 6).
  • exhaust from an internal combustion engine flows into the turbocharger 101, whereby the turbine disposed in the turbocharger 101 rotates.
  • the rotation of the turbine disposed in the turbocharger 101 is transmitted to the turbine disposed in the compressor 103 via the shaft.
  • the intake air is sent to the internal combustion engine by rotating the turbine disposed in the compressor 103 and taking in the intake air.
  • the exhaust gas flowing into the turbocharger 101 flows into the exhaust collecting pipe 102 via the bellows pipe 104, and the exhaust gas flows into an exhaust pipe (not shown).
  • the bellows tube 104 disposed on the downstream side of the turbocharger 101 is required to use a high-performance member that can withstand high-temperature exhaust from the internal combustion engine. Therefore, there has been a problem that the manufacturing cost of the turbocharger 101 becomes very high.
  • the present invention has been made to solve the above-described problems, and an object of the present invention is to provide a turbocharger that can easily and inexpensively manufacture a turbine housing that can absorb thermal expansion, and a method for manufacturing the same.
  • a turbocharger is a turbocharger including a turbine disposed in an exhaust passage, a turbine housing covering a turbine wheel of the turbine, and an exhaust pipe connecting flange disposed on the downstream side of the turbine housing.
  • An exhaust guide portion is provided between the turbine housing and the flange, and one of the exhaust guide portion and one end of the turbine housing, and the other end of the exhaust guide portion and the flange are combined.
  • the elements in the combination are fixed by welding, and the elements in the other combination are assembled slidably.
  • the turbocharger manufacturing method of the present invention includes a turbine disposed in the exhaust passage, a turbine housing that covers a turbine wheel of the turbine, and an exhaust guide portion and a flange disposed on the downstream side of the turbine housing.
  • This is a method of manufacturing a turbocharger.
  • the method of manufacturing a turbocharger according to the present invention is configured by fixing the turbine housing and the exhaust guide part by welding to form an exhaust guide part integrated with the turbine housing, and the exhaust guide part integrated with the turbine housing is used as a flange. It is characterized by inserting.
  • the flange and the exhaust guide portion are fixed by welding to form an exhaust guide portion integrated with the flange, and the turbine housing is provided in the exhaust guide portion integrated with the flange. It is characterized by inserting.
  • FIG. 1 is an enlarged cross-sectional view of a turbocharger showing a first embodiment of the present invention.
  • FIG. 2 is an enlarged cross-sectional view of a turbocharger showing a second embodiment of the present invention.
  • FIG. 3 is an enlarged cross-sectional view of a turbocharger showing a third embodiment of the present invention.
  • FIG. 4 is an enlarged cross-sectional view of a turbocharger showing a fourth embodiment of the present invention.
  • FIG. 5 is an overall view of a conventional twin turbo equipped with a turbocharger.
  • FIG. 6 is a partially enlarged view of the conventional twin turbo shown in FIG.
  • a turbocharger 1 according to the first embodiment will be described with reference to FIG.
  • the turbocharger 1 of the first embodiment includes a center housing (not shown), a turbine housing body 2 and a compressor housing (not shown).
  • a compressor housing (not shown) is fixed to one end side of a center housing (not shown), and a turbine housing body 2 is fixed to the other end side.
  • the turbine housing body 2 includes an inner cylinder 5 (turbine housing) in which an exhaust passage 27 is formed by a plurality of thin plate members, an inner cylinder fixing portion 11 to which the inner cylinder 5 is fixed, and a downstream side of the exhaust passage 27.
  • An exhaust pipe connecting flange 14 disposed, a turbine 3 disposed in the exhaust flow path 27, and a bearing 9 that supports the turbine 3 are provided. Further, an exhaust guide portion 15 is provided between the inner cylinder 5 and the flange 14.
  • the turbine 3 includes a shaft 17 that is rotatably supported by the turbine housing body 2 and a blade portion 19 (turbine wheel) that is fixed to one end of the shaft 17.
  • the inner cylinder 5 is formed by joining a first inner cylinder divided body 21 (thin plate member) and a second inner cylinder divided body 23 (thin plate member) by welding.
  • the first inner cylinder divided body 21 includes one end side 21a fixed to the inner cylinder fixing portion 11 of the turbine housing body 2 by welding, and the other end side 21b bonded to the second inner cylinder divided body 23 by welding. ing.
  • the second inner cylinder divided body 23 includes one end side 23a joined to the other end side 21b of the first inner cylinder divided body 21 by welding, and the other end side 23b inserted into the exhaust guide portion 15, and has one end A sliding portion 31 and a bent portion 29 are provided between the side 23a and the other end side 23b.
  • the sliding portion 31 is formed in a linear shape from the other end side 23 b of the second inner cylinder divided body 23. Further, a bent portion 29 is provided on the turbine housing body 2 side of the sliding portion 31, and the bent portion 29 is formed so as to be bent from the sliding portion 31.
  • butted portions 22 and 24 are provided to stand on the other end side 21b of the first inner cylinder divided body 21 and one end side 23a of the second inner cylinder divided body 23, respectively.
  • the butted portion 22 formed on the first inner cylinder divided body 21 and the butted portion 24 formed on the second inner cylinder divided body 23 are brought into contact with each other, and the end of the butted portion 22 and the end of the butted portion 24 are welded.
  • the inner cylinder 5 is sealed, and an exhaust passage 27 and a scroll chamber 25 are formed inside.
  • the scroll chamber 25 into which exhaust gas flows from an internal combustion engine (not shown) is formed so that the cross-sectional area on the upstream side is large and the cross-sectional area decreases toward the downstream side, and communicates with the exhaust flow path 27.
  • the exhaust passage 27 is provided on the downstream side of the scroll chamber 25, the blade portion 19 of the turbine 3 is disposed, and the exhaust guide portion 15 is disposed on the downstream side of the exhaust passage 27.
  • the sliding portion 31 formed on the other end side 23b of the second inner cylinder divided body 23 is slidably inserted into one end portion 15a (one end side) of the exhaust guide portion 15, and is connected to the one end portion 15a and the second end portion 15a. Between the bent part 29 of the inner cylinder division body 23, it inserts so that the predetermined clearance S may be provided. That is, the predetermined gap S is a gap between the one end portion 15 a and the bent portion 29 in the insertion direction of the sliding portion 31.
  • the other end portion 15b (the other end side) of the exhaust guide portion 15 is fixed to the flange 14 by welding E.
  • An exhaust pipe (not shown) for discharging exhaust gas is connected to the flange 14.
  • the second inner cylinder divided body 23 is bent larger than the first inner cylinder divided body 21, a force for elastically returning to the direction opposite to the blade portion 19 of the turbine 3 is always applied by the exhaust heat. Further, when the exhaust guide portion 15 and the second inner cylinder divided body 23 slide, the second inner cylinder divided body 23 tends to slide in the opposite direction to the blade portion 19 of the turbine 3. Contact between the first inner cylinder divided body 21 and the second inner cylinder divided body 23 to be formed and the blade portion 19 can be prevented.
  • a compressor housing (not shown) is fixed to one end side of a center housing (not shown), and the turbine housing body 2 is fixed to the other end side of the center housing.
  • the turbine 3 in which the shaft 17 and the blade portion 19 are integrally assembled with the turbine housing body 2 is inserted into the turbine housing body 2 in which the bearing 9 is disposed.
  • the one end side 21a of the first inner cylinder divided body 21 of the inner cylinder 5 is joined to the inner cylinder fixing portion 11 of the turbine housing body 2 by welding.
  • the one end side 23a of the 2nd inner cylinder division body 23 is joined to the other end side 21b of the 1st inner cylinder division body 21 by welding, and the inner cylinder 5 is formed.
  • the other end side 23 b of the second inner cylinder divided body 23 is inserted into the exhaust guide portion 15, and the bent portion 29 provided in the second inner cylinder divided body 23 and one end portion 15 a of the exhaust guide portion 15
  • the other end side 23b of the second inner cylinder divided body 23 is inserted so as to be slidable with respect to the exhaust guide portion 15 so as to leave a gap S therebetween.
  • the other end portion 15b of the exhaust guide portion 15 is fixed to the flange 14 by welding E to constitute the exhaust guide portion 15 in which the flange 14 is integrated, and the exhaust guide portion in which the flange 14 is integrated.
  • the exhaust gas that has rotated the turbine 3 passes through the exhaust flow path 27 and flows into the exhaust guide portion 15.
  • the inner cylinder 5 forming the scroll chamber 25 and the exhaust passage 27 is displaced by thermal expansion. Since the sliding portion 31 is slidably inserted into the exhaust guide portion 15 on the downstream side, the sliding portion 31 slides on the inner periphery of the exhaust guide portion 15 to allow displacement of the inner cylinder 5. Yes.
  • the sliding portion 31 of the second inner cylinder divided body 23 is slidably inserted into the exhaust guide portion 15, the inner cylinder 5 is thermally expanded due to the heat of the exhaust.
  • the sliding portion 31 slides on the exhaust guide portion 15, displacement due to thermal expansion of the inner cylinder 5 can be allowed.
  • a predetermined gap S is provided between the one end portion 15a of the exhaust guide portion 15 and the bent portion 29 of the second inner cylinder divided body 23 of the inner cylinder 5. Even when the cylinder 5 is displaced due to thermal expansion, since the gap S is provided, displacement due to thermal expansion of the inner cylinder 5 can be allowed while preventing leakage of exhaust gas.
  • the exhaust guide portion 15 is inserted into the inner cylinder 5 and no joining is performed between the inner cylinder 5 and the exhaust guide portion 15, the manufacturing process can be facilitated. That is, the turbocharger housing part A that can absorb thermal expansion can be manufactured easily and at low cost.
  • one end 15 a (one end side) of the exhaust guide portion 15 and the other end side 23 b of the second inner cylinder divided body 23 of the inner cylinder 5 are welded E. While being fixed, the other end portion 15b (the other end side) of the exhaust guide portion 15 is inserted into the hole portion 14a of the flange 14 and is slidably attached.
  • a predetermined gap S ⁇ b> 2 is provided between the hole portion 14 a of the flange 14 and the bent portion 29 of the second inner cylinder divided body 23.
  • the predetermined gap S ⁇ b> 2 is a gap between the hole portion 14 a of the flange 14 and the bent portion 29 in the insertion direction of the exhaust guide portion 15.
  • the other end portion 15b (the other end side) of the exhaust guide portion 15 is slidably inserted into the hole portion 14a of the flange 14, so that the inner cylinder 5 is thermally expanded by the heat of the exhaust. Even in this case, by allowing the other end portion 15b (the other end side) to slide with the hole portion 14a of the flange 14, the displacement due to the thermal expansion of the inner cylinder 5 is allowed while preventing leakage of exhaust gas. Can do.
  • the predetermined gap S2 is provided between the hole 14a of the flange 14 and the bent portion 29 of the second inner cylinder divided body 23 of the inner cylinder 5, the inner cylinder 5 Even when is displaced due to thermal expansion, since the gap S2 is provided, displacement due to thermal expansion of the inner cylinder 5 can be allowed while preventing leakage of exhaust gas.
  • the exhaust guide integrated with the inner cylinder 5 by fixing the one end 15 a of the exhaust guide 15 and the other end 23 b of the second inner cylinder divided body 23 of the inner cylinder 5 by welding E.
  • the other end portion 15 b of the exhaust guide portion 15 that is integrated with the inner cylinder 5 is inserted into the hole portion 14 a of the flange 14. Therefore, the turbocharger housing part A in which the inner cylinder 5 as the turbine housing, the exhaust guide part 15 and the flange 14 are integrally formed can be manufactured easily and at low cost.
  • the other end portion 15 b (the other end side) of the exhaust guide portion 15 is inserted into the hole portion 14 a of the flange 14, and the other end portion 15 b (the other end side) and the flange 14 are joined. Since this is not performed, the manufacturing process can be facilitated. That is, the turbocharger housing part A that can absorb thermal expansion can be manufactured easily and at low cost.
  • the other end side 23 b of the second inner cylinder divided body 23 of the inner cylinder 5 is inserted into one end portion 15 a (one end side) of the exhaust guide portion 15.
  • the other end portion 15b (the other end side) of the exhaust guide portion 15 and the flange 14 are fixed by welding E.
  • An outer cylinder 7 is provided so as to cover the inner cylinder 5 with a predetermined distance from the inner cylinder 5.
  • the outer cylinder 7 has one end fixed to the outer cylinder fixing portion 13 of the turbine housing body 2 by welding and the other end fixed to the flange 14 by welding E.
  • the outer cylinder 7 is connected to the inner cylinder 5. It is provided so as to cover the inner cylinder 5 with a predetermined interval. Further, the abutting portions 22 and 24 of the inner cylinder 5 protrude outward from the inner cylinder insertion portion 8 provided in the outer cylinder 7.
  • Other configurations are the same as those in the first embodiment.
  • the outer cylinder 7 is provided so as to cover the inner cylinder 5, even if the exhaust gas leaks from the gap between the inner cylinder 5 and the exhaust guide portion 15, the inner cylinder 5 and the outer cylinder 7. It is possible to prevent the exhaust gas from leaking out of the outer cylinder 7 by being filled with the exhaust gas.
  • the outer cylinder 7 covers the inner cylinder 5 with a predetermined gap between the outer cylinder 7 and the inner cylinder 5, the inner cylinder 5 can be protected and insulated at the same time, and the rigidity as the turbine housing can be increased. .
  • the one end 15 a (one end side) of the exhaust guide portion 15 and the other end 23 b of the second inner cylinder divided body 23 of the inner cylinder 5 are welded E. While being fixed, the other end portion 15b (the other end side) of the exhaust guide portion 15 is inserted into the hole portion 14a of the flange 14 and is slidably attached.
  • An outer cylinder 7 is provided so as to cover the inner cylinder 5 with a predetermined distance from the inner cylinder 5.
  • the outer cylinder 7 has one end fixed to the outer cylinder fixing portion 13 of the turbine housing body 2 by welding and the other end fixed to the flange 14 by welding E.
  • the outer cylinder 7 is connected to the inner cylinder 5. It is provided so as to cover the inner cylinder 5 with a predetermined interval. Further, the abutting portions 22 and 24 of the inner cylinder 5 protrude outward from the inner cylinder insertion portion 8 provided in the outer cylinder 7.
  • Other configurations are the same as those in the second embodiment described above.
  • the outer cylinder 7 is provided so as to cover the inner cylinder 5, even if the exhaust gas leaks from the gap between the inner cylinder 5 and the exhaust guide portion 15, the inner cylinder 5 and the outer cylinder 7. It is possible to prevent the exhaust gas from leaking out of the outer cylinder 7 by being filled with the exhaust gas.
  • the outer cylinder 7 covers the inner cylinder 5 at a predetermined interval from the inner cylinder 5, the outer cylinder 7 can be insulated while being protected, and the rigidity as the turbine housing can be increased.
  • the inner cylinder is comprised from the 1st inner cylinder division body and the 2nd inner cylinder division body, you may form an inner cylinder with a single member.
  • the turbine housing is slidably inserted into the exhaust guide portion or the exhaust guide portion into the hole of the flange, even when the turbine housing is thermally expanded due to the heat of the exhaust.
  • the turbine housing or the exhaust guide portion slides, displacement due to thermal expansion of the turbine housing can be allowed.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Supercharger (AREA)
  • Exhaust Silencers (AREA)

Abstract

A turbocharger 1 equipped with: a turbine 3 arranged within an exhaust flow passage 27; a turbine housing 5 covering a turbine wheel 19 of the turbine 3; and a flange 14 for connecting an exhaust pipe arranged downstream from the turbine housing 5. The turbocharger has an exhaust guide section 15 between the turbine housing 5 and the flange 14, and of the combination of one end 15a of the exhaust guide section 15 and the turbine housing 5 and the combination of the other end of the exhaust guide section 15 and the flange 14, the members of one of the combinations are secured by welds E, and the members of the other of the combinations are assembled so as to be capable of sliding freely.

Description

ターボチャージャ及びその製造方法Turbocharger and manufacturing method thereof
　本発明は、車両等に搭載されるターボチャージャ及びその製造方法に関する。 The present invention relates to a turbocharger mounted on a vehicle or the like and a manufacturing method thereof.
　内燃機関からの排気の流れを利用し、内燃機関への吸気を増加させるターボチャージャは種々提案されている（下記特許文献１）。 Various turbochargers that increase the intake air to the internal combustion engine using the flow of exhaust gas from the internal combustion engine have been proposed (Patent Document 1 below).
　図５に示すツインターボ１００は、内燃機関からの排気によって回転するタービンを有するターボチャージャ１０１と、ターボチャージャ１０１の下流側に配置されて排気が流入する排気集合管１０２と、ターボチャージャ１０１内のタービンが回転することによって外部からの吸気を取り入れるコンプレッサ１０３と、ターボチャージャ１０１と排気集合管１０２との間に配置される蛇腹管１０４とを備えている。 A twin turbo 100 shown in FIG. 5 includes a turbocharger 101 having a turbine that is rotated by exhaust from an internal combustion engine, an exhaust collecting pipe 102 that is arranged downstream of the turbocharger 101 and into which exhaust flows, and a turbocharger 101 The compressor 103 which takes in the external intake air by rotating a turbine, and the bellows pipe 104 arrange | positioned between the turbocharger 101 and the exhaust collecting pipe 102 are provided.
　ターボチャージャ１０１には、内燃機関から高温の排気が流入するため、ターボチャージャ１０１が熱膨張によって変位する。しかし、ターボチャージャ１０１の下流側に蛇腹管１０４が配置されていることにより、ターボチャージャ１０１の熱膨張による変位が許容される（図６参照）。 Since high temperature exhaust gas flows into the turbocharger 101 from the internal combustion engine, the turbocharger 101 is displaced by thermal expansion. However, since the bellows tube 104 is disposed on the downstream side of the turbocharger 101, displacement due to thermal expansion of the turbocharger 101 is allowed (see FIG. 6).
　図５に示すツインターボ１００では、図示しない内燃機関からの排気がターボチャージャ１０１に流入することによって、ターボチャージャ１０１内に配置されたタービンが回転する。ターボチャージャ１０１内に配置されたタービンの回転を、シャフトを介してコンプレッサ１０３内に配置されるタービンに伝達する。そしてコンプレッサ１０３内に配置されるタービンを回転させて吸気を取り入れることによって内燃機関へ吸気を送っている。 In the twin turbo 100 shown in FIG. 5, exhaust from an internal combustion engine (not shown) flows into the turbocharger 101, whereby the turbine disposed in the turbocharger 101 rotates. The rotation of the turbine disposed in the turbocharger 101 is transmitted to the turbine disposed in the compressor 103 via the shaft. The intake air is sent to the internal combustion engine by rotating the turbine disposed in the compressor 103 and taking in the intake air.
　また、ターボチャージャ１０１に流入した排気は、蛇腹管１０４を介して排気集合管１０２へ流入し、図示しない排気管へ排気が流れている。 Further, the exhaust gas flowing into the turbocharger 101 flows into the exhaust collecting pipe 102 via the bellows pipe 104, and the exhaust gas flows into an exhaust pipe (not shown).
特開２００２－３６４３７３号公報JP 2002-364373 A
　しかしながら、前述のターボチャージャ１０１の下流側に配置される蛇腹管１０４には、内燃機関からの高温の排気に耐えることのできる高性能な部材を用いることが求められる。そのため、ターボチャージャ１０１の製造コストが非常に高くなってしまうという問題があった。 However, the bellows tube 104 disposed on the downstream side of the turbocharger 101 is required to use a high-performance member that can withstand high-temperature exhaust from the internal combustion engine. Therefore, there has been a problem that the manufacturing cost of the turbocharger 101 becomes very high.
　本発明は、前述の課題を解決すべくなされたものであり、熱膨張を吸収することができるタービンハウジングを簡単かつ低コストで製造することができるターボチャージャ及びその製造方法を提供することを目的とする。 The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a turbocharger that can easily and inexpensively manufacture a turbine housing that can absorb thermal expansion, and a method for manufacturing the same. And
　本発明のターボチャージャは、排気流路内に配置されるタービンと、タービンのタービンホイールを覆うタービンハウジングと、タービンハウジングの下流側に配置される排気管接続用のフランジとを備えたターボチャージャであって、タービンハウジングとフランジの間に排気ガイド部を有し、この排気ガイド部の一端側とタービンハウジングの組合せ、及び、排気ガイド部の他端側とフランジの組合せのうち、いずれか一方の組合せ内の要素同士を溶接により固定し、他方の組合せ内の要素同士を摺動自在に組み立てたことを特徴とする。 A turbocharger according to the present invention is a turbocharger including a turbine disposed in an exhaust passage, a turbine housing covering a turbine wheel of the turbine, and an exhaust pipe connecting flange disposed on the downstream side of the turbine housing. An exhaust guide portion is provided between the turbine housing and the flange, and one of the exhaust guide portion and one end of the turbine housing, and the other end of the exhaust guide portion and the flange are combined. The elements in the combination are fixed by welding, and the elements in the other combination are assembled slidably.
　また、本発明のターボチャージャの製造方法は、排気流路内に配置されるタービンと、タービンのタービンホイールを覆うタービンハウジングと、タービンハウジングの下流側に配置される排気ガイド部及びフランジとを備えたターボチャージャの製造方法である。本発明のターボチャージャの製造方法は、タービンハウジングと排気ガイド部と溶接により固定して、タービンハウジングと一体化された排気ガイド部を構成し、タービンハウジングと一体化された排気ガイド部をフランジに挿入することを特徴とする。又は、本発明のターボチャージャの製造方法は、フランジと排気ガイド部と溶接により固定して、フランジと一体化された排気ガイド部を構成し、フランジと一体化された排気ガイド部にタービンハウジングを挿入することを特徴とする。 The turbocharger manufacturing method of the present invention includes a turbine disposed in the exhaust passage, a turbine housing that covers a turbine wheel of the turbine, and an exhaust guide portion and a flange disposed on the downstream side of the turbine housing. This is a method of manufacturing a turbocharger. The method of manufacturing a turbocharger according to the present invention is configured by fixing the turbine housing and the exhaust guide part by welding to form an exhaust guide part integrated with the turbine housing, and the exhaust guide part integrated with the turbine housing is used as a flange. It is characterized by inserting. Alternatively, in the turbocharger manufacturing method of the present invention, the flange and the exhaust guide portion are fixed by welding to form an exhaust guide portion integrated with the flange, and the turbine housing is provided in the exhaust guide portion integrated with the flange. It is characterized by inserting.
図１は、本発明の第１実施形態を示すターボチャージャの拡大断面図である。FIG. 1 is an enlarged cross-sectional view of a turbocharger showing a first embodiment of the present invention. 図２は、本発明の第２実施形態を示すターボチャージャの拡大断面図である。FIG. 2 is an enlarged cross-sectional view of a turbocharger showing a second embodiment of the present invention. 図３は、本発明の第３実施形態を示すターボチャージャの拡大断面図である。FIG. 3 is an enlarged cross-sectional view of a turbocharger showing a third embodiment of the present invention. 図４は、本発明の第４実施形態を示すターボチャージャの拡大断面図である。FIG. 4 is an enlarged cross-sectional view of a turbocharger showing a fourth embodiment of the present invention. 図５は、ターボチャージャを備える従来のツインターボの全体図である。FIG. 5 is an overall view of a conventional twin turbo equipped with a turbocharger. 図６は、図５に示す従来のツインターボの一部拡大図である。FIG. 6 is a partially enlarged view of the conventional twin turbo shown in FIG.
　以下、本発明の実施形態について、図１～図４を用いて詳細に説明する。 Hereinafter, embodiments of the present invention will be described in detail with reference to FIGS.
　〔第１実施形態〕
　図１を用いて第１実施形態のターボチャージャ１について説明する。 [First Embodiment]
A turbocharger 1 according to the first embodiment will be described with reference to FIG.
　図１に示すように、第１実施形態のターボチャージャ１は、図示しないセンタハウジングと、タービンハウジング本体２と、図示しないコンプレッサハウジングとを備えている。 As shown in FIG. 1, the turbocharger 1 of the first embodiment includes a center housing (not shown), a turbine housing body 2 and a compressor housing (not shown).
　図示しないセンタハウジングの一端側には、図示しないコンプレッサハウジングが固定され、他端側には、タービンハウジング本体２が固定されている。 A compressor housing (not shown) is fixed to one end side of a center housing (not shown), and a turbine housing body 2 is fixed to the other end side.
　タービンハウジング本体２は、複数の薄板部材によって排気流路２７が形成される内筒５（タービンハウジング）と、内筒５が固定される内筒固定部１１と、排気流路２７の下流側に配置される排気管接続用のフランジ１４と、排気流路２７内に配置されるタービン３と、タービン３を支持するベアリング９を備えている。また、内筒５とフランジ１４との間に排気ガイド部１５を有している。 The turbine housing body 2 includes an inner cylinder 5 (turbine housing) in which an exhaust passage 27 is formed by a plurality of thin plate members, an inner cylinder fixing portion 11 to which the inner cylinder 5 is fixed, and a downstream side of the exhaust passage 27. An exhaust pipe connecting flange 14 disposed, a turbine 3 disposed in the exhaust flow path 27, and a bearing 9 that supports the turbine 3 are provided. Further, an exhaust guide portion 15 is provided between the inner cylinder 5 and the flange 14.
　タービン３は、タービンハウジング本体２に回転自在支持されるシャフト１７と、シャフト１７の一端側に固定される羽根部１９（タービンホイール）とを備えている。 The turbine 3 includes a shaft 17 that is rotatably supported by the turbine housing body 2 and a blade portion 19 (turbine wheel) that is fixed to one end of the shaft 17.
　内筒５は、第１内筒分割体２１（薄板部材）と第２内筒分割体２３（薄板部材）とが溶接により接合されることによって形成されている。 The inner cylinder 5 is formed by joining a first inner cylinder divided body 21 (thin plate member) and a second inner cylinder divided body 23 (thin plate member) by welding.
　第１内筒分割体２１は、タービンハウジング本体２の内筒固定部１１に溶接により固定される一端側２１ａと、第２内筒分割体２３に溶接により接合される他端側２１ｂとを備えている。 The first inner cylinder divided body 21 includes one end side 21a fixed to the inner cylinder fixing portion 11 of the turbine housing body 2 by welding, and the other end side 21b bonded to the second inner cylinder divided body 23 by welding. ing.
　第２内筒分割体２３は、第１内筒分割体２１の他端側２１ｂに溶接により接合される一端側２３ａと、排気ガイド部１５内へ挿入される他端側２３ｂとを備え、一端側２３ａと他端側２３ｂの間には、摺動部３１と折曲部２９が設けられている。 The second inner cylinder divided body 23 includes one end side 23a joined to the other end side 21b of the first inner cylinder divided body 21 by welding, and the other end side 23b inserted into the exhaust guide portion 15, and has one end A sliding portion 31 and a bent portion 29 are provided between the side 23a and the other end side 23b.
　摺動部３１は、第２内筒分割体２３の他端側２３ｂから直線形状に形成されている。また、摺動部３１のタービンハウジング本体２側には折曲部２９が設けられ、摺動部３１から湾曲するように折曲部２９が形成されている。 The sliding portion 31 is formed in a linear shape from the other end side 23 b of the second inner cylinder divided body 23. Further, a bent portion 29 is provided on the turbine housing body 2 side of the sliding portion 31, and the bent portion 29 is formed so as to be bent from the sliding portion 31.
　また、第１内筒分割体２１の他端側２１ｂ及び第２内筒分割体２３の一端側２３ａには、それぞれ突き合わせ部２２，２４が立設するようにして設けられている。第１内筒分割体２１に形成される突き合わせ部２２と第２内筒分割体２３に形成される突き合わせ部２４とを当接し、突き合わせ部２２の端部と突き合わせ部２４の端部を溶接により接合することにより内筒５が密閉され、内部に排気流路２７とスクロール室２５が形成される。 Further, butted portions 22 and 24 are provided to stand on the other end side 21b of the first inner cylinder divided body 21 and one end side 23a of the second inner cylinder divided body 23, respectively. The butted portion 22 formed on the first inner cylinder divided body 21 and the butted portion 24 formed on the second inner cylinder divided body 23 are brought into contact with each other, and the end of the butted portion 22 and the end of the butted portion 24 are welded. By joining, the inner cylinder 5 is sealed, and an exhaust passage 27 and a scroll chamber 25 are formed inside.
　図示しない内燃機関から排気が流入するスクロール室２５は、上流側の断面積が広く、下流側へ向かうにつれて断面積が小さくなるように形成されており、排気流路２７と連通している。 The scroll chamber 25 into which exhaust gas flows from an internal combustion engine (not shown) is formed so that the cross-sectional area on the upstream side is large and the cross-sectional area decreases toward the downstream side, and communicates with the exhaust flow path 27.
　排気流路２７は、スクロール室２５の下流側に設けられており、タービン３の羽根部１９が配置され、排気流路２７の下流側には、排気ガイド部１５が配置されている。 The exhaust passage 27 is provided on the downstream side of the scroll chamber 25, the blade portion 19 of the turbine 3 is disposed, and the exhaust guide portion 15 is disposed on the downstream side of the exhaust passage 27.
　第２内筒分割体２３の他端側２３ｂに形成される摺動部３１は、排気ガイド部１５の一端部１５ａ（一端側）に摺動自在に挿入されており、一端部１５ａと第２内筒分割体２３の折曲部２９との間には、所定の隙間Ｓが設けられるように挿入されている。すなわち、所定の隙間Ｓは、摺動部３１の挿入方向における一端部１５ａと折曲部２９の間の隙間である。 The sliding portion 31 formed on the other end side 23b of the second inner cylinder divided body 23 is slidably inserted into one end portion 15a (one end side) of the exhaust guide portion 15, and is connected to the one end portion 15a and the second end portion 15a. Between the bent part 29 of the inner cylinder division body 23, it inserts so that the predetermined clearance S may be provided. That is, the predetermined gap S is a gap between the one end portion 15 a and the bent portion 29 in the insertion direction of the sliding portion 31.
　また、排気ガイド部１５の他端部１５ｂ（他端側）は、フランジ１４に溶接Ｅにより固定されている。このフランジ１４には排気を吐出する図示しない排気管が接続される。 Further, the other end portion 15b (the other end side) of the exhaust guide portion 15 is fixed to the flange 14 by welding E. An exhaust pipe (not shown) for discharging exhaust gas is connected to the flange 14.
　なお、第２内筒分割体２３は、第１内筒分割体２１より大きく曲がっているため、排気熱により常にタービン３の羽根部１９と反対方向へ弾性復帰しようとする力が作用する。また、排気ガイド部１５と第２内筒分割体２３が摺動する際、第２内筒分割体２３はタービン３の羽根部１９と反対方向に摺動する傾向があるため、内筒５を形成する第１内筒分割体２１、第２内筒分割体２３と、羽根部１９との接触を防止することができる。 In addition, since the second inner cylinder divided body 23 is bent larger than the first inner cylinder divided body 21, a force for elastically returning to the direction opposite to the blade portion 19 of the turbine 3 is always applied by the exhaust heat. Further, when the exhaust guide portion 15 and the second inner cylinder divided body 23 slide, the second inner cylinder divided body 23 tends to slide in the opposite direction to the blade portion 19 of the turbine 3. Contact between the first inner cylinder divided body 21 and the second inner cylinder divided body 23 to be formed and the blade portion 19 can be prevented.
　次に、ターボチャージャ１の製造方法について説明する。 Next, a method for manufacturing the turbocharger 1 will be described.
　まず、図示しないセンタハウジングの一端側に図示しないコンプレッサハウジングを固定し、センタハウジングの他端側にタービンハウジング本体２を固定する。 First, a compressor housing (not shown) is fixed to one end side of a center housing (not shown), and the turbine housing body 2 is fixed to the other end side of the center housing.
　タービンハウジング本体２にシャフト１７と羽根部１９を一体に組付けたタービン３を、ベアリング９が配置されたタービンハウジング本体２に挿入する。 The turbine 3 in which the shaft 17 and the blade portion 19 are integrally assembled with the turbine housing body 2 is inserted into the turbine housing body 2 in which the bearing 9 is disposed.
　次に、タービンハウジング本体２の内筒固定部１１に内筒５の第１内筒分割体２１の一端側２１ａを溶接により接合する。そして、第１内筒分割体２１の他端側２１ｂに第２内筒分割体２３の一端側２３ａを溶接により接合し、内筒５を形成する。 Next, the one end side 21a of the first inner cylinder divided body 21 of the inner cylinder 5 is joined to the inner cylinder fixing portion 11 of the turbine housing body 2 by welding. And the one end side 23a of the 2nd inner cylinder division body 23 is joined to the other end side 21b of the 1st inner cylinder division body 21 by welding, and the inner cylinder 5 is formed.
　次に、第２内筒分割体２３の他端側２３ｂを排気ガイド部１５に挿入し、第２内筒分割体２３に設けられた折曲部２９と排気ガイド部１５の一端部１５ａとの間に隙間Ｓを空けた状態となるように、排気ガイド部１５に対して摺動自在に、第２内筒分割体２３の他端側２３ｂを挿入する。 Next, the other end side 23 b of the second inner cylinder divided body 23 is inserted into the exhaust guide portion 15, and the bent portion 29 provided in the second inner cylinder divided body 23 and one end portion 15 a of the exhaust guide portion 15 The other end side 23b of the second inner cylinder divided body 23 is inserted so as to be slidable with respect to the exhaust guide portion 15 so as to leave a gap S therebetween.
　この際、排気ガイド部１５の他端部１５ｂを、フランジ１４に溶接Ｅにより固定して、フランジ１４が一体化された排気ガイド部１５を構成し、このフランジ１４が一体化された排気ガイド部１５の一端部１５ａ内に内筒５の第２内筒分割体２３の他端側２３ｂを挿入することによって、タービンハウジングとしての内筒５と排気ガイド部１５とフランジ１４を一体に形成したターボチャージャハウジング部Ａを簡単かつ低コストで製造することができる。 At this time, the other end portion 15b of the exhaust guide portion 15 is fixed to the flange 14 by welding E to constitute the exhaust guide portion 15 in which the flange 14 is integrated, and the exhaust guide portion in which the flange 14 is integrated. By inserting the other end side 23b of the second inner cylinder divided body 23 of the inner cylinder 5 into the one end 15a of the engine 15, the turbo cylinder in which the inner cylinder 5, the exhaust guide section 15, and the flange 14 as a turbine housing are integrally formed. The charger housing part A can be manufactured easily and at low cost.
　以上により、ターボチャージャ１の組付けが完了する。 This completes the assembly of the turbocharger 1.
　次に、ターボチャージャ１の動作について説明する。 Next, the operation of the turbocharger 1 will be described.
　図示しない内燃機関から排気がスクロール室２５へ流入し、スクロール室２５の上流側から下流側へ排気が流れる際に、タービン３の羽根部１９を回転させる。 When the exhaust gas flows from the internal combustion engine (not shown) into the scroll chamber 25 and the exhaust gas flows from the upstream side to the downstream side of the scroll chamber 25, the blade portion 19 of the turbine 3 is rotated.
　タービン３の羽根部１９が回転することによって、羽根部１９に固定されたシャフト１７が回転し、図示しない他端側に配置されるコンプレッサハウジング内に配置されるタービン３を回転させている。 When the blade portion 19 of the turbine 3 rotates, the shaft 17 fixed to the blade portion 19 rotates, and the turbine 3 disposed in the compressor housing disposed on the other end (not shown) is rotated.
　タービン３を回転させた排気は、排気流路２７を通り、排気ガイド部１５へと排気が流れる。 The exhaust gas that has rotated the turbine 3 passes through the exhaust flow path 27 and flows into the exhaust guide portion 15.
　内燃機関からスクロール室２５及び排気流路２７へ排気が流入することによって、スクロール室２５及び排気流路２７を形成する内筒５が熱膨張によって変位するが、内筒５の他端側２３ｂの摺動部３１が摺動自在に下流側の排気ガイド部１５に挿入されているため、摺動部３１が排気ガイド部１５の内周と摺動することによって内筒５の変位を許容している。 As the exhaust gas flows from the internal combustion engine into the scroll chamber 25 and the exhaust passage 27, the inner cylinder 5 forming the scroll chamber 25 and the exhaust passage 27 is displaced by thermal expansion. Since the sliding portion 31 is slidably inserted into the exhaust guide portion 15 on the downstream side, the sliding portion 31 slides on the inner periphery of the exhaust guide portion 15 to allow displacement of the inner cylinder 5. Yes.
　本実施形態によれば、第２内筒分割体２３の摺動部３１が排気ガイド部１５に摺動自在に挿入されているため、排気の熱により内筒５が熱膨張した場合であっても、摺動部３１が排気ガイド部１５と摺動することによって、内筒５の熱膨張による変位を許容することができる。 According to the present embodiment, since the sliding portion 31 of the second inner cylinder divided body 23 is slidably inserted into the exhaust guide portion 15, the inner cylinder 5 is thermally expanded due to the heat of the exhaust. In addition, when the sliding portion 31 slides on the exhaust guide portion 15, displacement due to thermal expansion of the inner cylinder 5 can be allowed.
　また、本実施形態では、排気ガイド部１５の一端部１５ａと内筒５の第２内筒分割体２３の折曲部２９との間には、所定の隙間Ｓが設けられているため、内筒５が熱膨張により変位した場合であっても、隙間Ｓが設けられているため、排気の漏れを防止しつつ、内筒５の熱膨張による変位を許容することができる。 In the present embodiment, a predetermined gap S is provided between the one end portion 15a of the exhaust guide portion 15 and the bent portion 29 of the second inner cylinder divided body 23 of the inner cylinder 5. Even when the cylinder 5 is displaced due to thermal expansion, since the gap S is provided, displacement due to thermal expansion of the inner cylinder 5 can be allowed while preventing leakage of exhaust gas.
　さらに、内筒５に排気ガイド部１５を挿入し、内筒５と排気ガイド部１５の間で接合を行わないため、製造工程を容易にすることができる。すなわち、熱膨張を吸収することができるターボチャージャハウジング部Ａを簡単かつ低コストで製造することができる。 Furthermore, since the exhaust guide portion 15 is inserted into the inner cylinder 5 and no joining is performed between the inner cylinder 5 and the exhaust guide portion 15, the manufacturing process can be facilitated. That is, the turbocharger housing part A that can absorb thermal expansion can be manufactured easily and at low cost.
　〔第２実施形態〕
　次に、図２を用いて第２実施形態のターボチャージャ１について説明する。なお、上記した第１実施形態と同様の構成については説明を省略する。 [Second Embodiment]
Next, the turbocharger 1 of 2nd Embodiment is demonstrated using FIG. The description of the same configuration as that of the first embodiment described above is omitted.
　図２に示すように、第２実施形態のターボチャージャ１では、排気ガイド部１５の一端部１５ａ（一端側）と内筒５の第２内筒分割体２３の他端側２３ｂを溶接Ｅにより固定すると共に、排気ガイド部１５の他端部１５ｂ（他端側）をフランジ１４の孔部１４ａ内に挿入して摺動自在に取り付けてある。 As shown in FIG. 2, in the turbocharger 1 of the second embodiment, one end 15 a (one end side) of the exhaust guide portion 15 and the other end side 23 b of the second inner cylinder divided body 23 of the inner cylinder 5 are welded E. While being fixed, the other end portion 15b (the other end side) of the exhaust guide portion 15 is inserted into the hole portion 14a of the flange 14 and is slidably attached.
　フランジ１４の孔部１４ａと第２内筒分割体２３の折曲部２９との間には、所定の隙間Ｓ２が設けられている。所定の隙間Ｓ２は、排気ガイド部１５の挿入方向におけるフランジ１４の孔部１４ａと折曲部２９の間の隙間である。 A predetermined gap S <b> 2 is provided between the hole portion 14 a of the flange 14 and the bent portion 29 of the second inner cylinder divided body 23. The predetermined gap S <b> 2 is a gap between the hole portion 14 a of the flange 14 and the bent portion 29 in the insertion direction of the exhaust guide portion 15.
　なお、他の構成は、上記した第１実施形態と同様の構成である。 Other configurations are the same as those in the first embodiment described above.
　これにより、第１実施形態と同様の作用・効果を奏する。 Thereby, the same operation and effect as in the first embodiment are obtained.
　本実施形態によれば、排気ガイド部１５の他端部１５ｂ（他端側）がフランジ１４の孔部１４ａ内に摺動自在に挿入されているため、排気の熱により内筒５が熱膨張した場合であっても、他端部１５ｂ（他端側）がフランジ１４の孔部１４ａと摺動することによって、排気の漏れを防止しつつ、内筒５の熱膨張による変位を許容することができる。 According to the present embodiment, the other end portion 15b (the other end side) of the exhaust guide portion 15 is slidably inserted into the hole portion 14a of the flange 14, so that the inner cylinder 5 is thermally expanded by the heat of the exhaust. Even in this case, by allowing the other end portion 15b (the other end side) to slide with the hole portion 14a of the flange 14, the displacement due to the thermal expansion of the inner cylinder 5 is allowed while preventing leakage of exhaust gas. Can do.
　また、本実施形態では、フランジ１４の孔部１４ａと内筒５の第２内筒分割体２３の折曲部２９との間には、所定の隙間Ｓ２が設けられているため、内筒５が熱膨張により変位した場合であっても、隙間Ｓ２が設けられているため、排気の漏れを防止しつつ、内筒５の熱膨張による変位を許容することができる。 In the present embodiment, since the predetermined gap S2 is provided between the hole 14a of the flange 14 and the bent portion 29 of the second inner cylinder divided body 23 of the inner cylinder 5, the inner cylinder 5 Even when is displaced due to thermal expansion, since the gap S2 is provided, displacement due to thermal expansion of the inner cylinder 5 can be allowed while preventing leakage of exhaust gas.
　さらに、本実施形態では、排気ガイド部１５の一端部１５ａと内筒５の第２内筒分割体２３の他端側２３ｂを溶接Ｅにより固定して、内筒５と一体化された排気ガイド部１５を構成し、この内筒５と一体化された排気ガイド部１５の他端部１５ｂをフランジ１４の孔部１４ａ内に挿入している。そのため、タービンハウジングとしての内筒５と排気ガイド部１５とフランジ１４を一体に形成したターボチャージャハウジング部Ａを簡単かつ低コストで製造することができる。 Further, in the present embodiment, the exhaust guide integrated with the inner cylinder 5 by fixing the one end 15 a of the exhaust guide 15 and the other end 23 b of the second inner cylinder divided body 23 of the inner cylinder 5 by welding E. The other end portion 15 b of the exhaust guide portion 15 that is integrated with the inner cylinder 5 is inserted into the hole portion 14 a of the flange 14. Therefore, the turbocharger housing part A in which the inner cylinder 5 as the turbine housing, the exhaust guide part 15 and the flange 14 are integrally formed can be manufactured easily and at low cost.
　また、本実施形態では、排気ガイド部１５の他端部１５ｂ（他端側）をフランジ１４の孔部１４ａ内に挿入し、他端部１５ｂ（他端側）とフランジ１４の間で接合を行わないため、製造工程を容易にすることができる。すなわち、熱膨張を吸収することができるターボチャージャハウジング部Ａを簡単かつ低コストで製造することができる。 In the present embodiment, the other end portion 15 b (the other end side) of the exhaust guide portion 15 is inserted into the hole portion 14 a of the flange 14, and the other end portion 15 b (the other end side) and the flange 14 are joined. Since this is not performed, the manufacturing process can be facilitated. That is, the turbocharger housing part A that can absorb thermal expansion can be manufactured easily and at low cost.
　〔第３実施形態〕
　次に、図３を用いて第３実施形態のターボチャージャ１について説明する。なお、上記した第１実施形態と同様の構成については説明を省略する。 [Third Embodiment]
Next, the turbocharger 1 of 3rd Embodiment is demonstrated using FIG. The description of the same configuration as that of the first embodiment described above is omitted.
　図３に示すように、第３実施形態のターボチャージャ１では、排気ガイド部１５の一端部１５ａ（一端側）内に内筒５の第２内筒分割体２３の他端側２３ｂを挿入して摺動自在に取り付けると共に、排気ガイド部１５の他端部１５ｂ（他端側）とフランジ１４を溶接Ｅにより固定してある。また、内筒５と所定間隔を空けて内筒５を覆うように設けられる外筒７が設けられている。 As shown in FIG. 3, in the turbocharger 1 of the third embodiment, the other end side 23 b of the second inner cylinder divided body 23 of the inner cylinder 5 is inserted into one end portion 15 a (one end side) of the exhaust guide portion 15. The other end portion 15b (the other end side) of the exhaust guide portion 15 and the flange 14 are fixed by welding E. An outer cylinder 7 is provided so as to cover the inner cylinder 5 with a predetermined distance from the inner cylinder 5.
　すなわち、外筒７は、一端側をタービンハウジング本体２の外筒固定部１３に溶接により固定され、他端側をフランジ１４に溶接Ｅにより固定されており、外筒７は、内筒５と所定の間隔を空けて、内筒５を覆うように設けられている。また、内筒５の突き合わせ部２２，２４は、外筒７に設けられた内筒挿通部８より外側に突出している。なお、他の構成は、上記した第１実施形態と同様の構成である。 That is, the outer cylinder 7 has one end fixed to the outer cylinder fixing portion 13 of the turbine housing body 2 by welding and the other end fixed to the flange 14 by welding E. The outer cylinder 7 is connected to the inner cylinder 5. It is provided so as to cover the inner cylinder 5 with a predetermined interval. Further, the abutting portions 22 and 24 of the inner cylinder 5 protrude outward from the inner cylinder insertion portion 8 provided in the outer cylinder 7. Other configurations are the same as those in the first embodiment.
　これにより、第１実施形態と同様の作用・効果を奏する。 Thereby, the same operation and effect as in the first embodiment are obtained.
　加えて、内筒５を覆うようにして外筒７が設けられているので、内筒５と排気ガイド部１５との隙間から排気が漏れた場合であっても、内筒５と外筒７との間に排気が充填されて、外筒７の外に排気が漏れることを防止することができる。このように、外筒７は、内筒５との間に所定間隔を空けて内筒５を覆うため、内筒５を保護すると同時に断熱し、かつ、タービンハウジングとしての剛性を高めることができる。 In addition, since the outer cylinder 7 is provided so as to cover the inner cylinder 5, even if the exhaust gas leaks from the gap between the inner cylinder 5 and the exhaust guide portion 15, the inner cylinder 5 and the outer cylinder 7. It is possible to prevent the exhaust gas from leaking out of the outer cylinder 7 by being filled with the exhaust gas. Thus, since the outer cylinder 7 covers the inner cylinder 5 with a predetermined gap between the outer cylinder 7 and the inner cylinder 5, the inner cylinder 5 can be protected and insulated at the same time, and the rigidity as the turbine housing can be increased. .
　〔第４実施形態〕
　次に、図４を用いて第４実施形態のターボチャージャ１について説明する。なお、上述した第２実施形態と同様の構成については説明を省略する。 [Fourth Embodiment]
Next, the turbocharger 1 according to the fourth embodiment will be described with reference to FIG. The description of the same configuration as that of the second embodiment described above is omitted.
　図３に示すように、第４実施形態のターボチャージャ１では、排気ガイド部１５の一端部１５ａ（一端側）と内筒５の第２内筒分割体２３の他端側２３ｂを溶接Ｅにより固定すると共に、排気ガイド部１５の他端部１５ｂ（他端側）をフランジ１４の孔部１４ａ内に挿入して摺動自在に取り付けてある。また、内筒５と所定間隔を空けて内筒５を覆うように設けられる外筒７が設けられている。 As shown in FIG. 3, in the turbocharger 1 of the fourth embodiment, the one end 15 a (one end side) of the exhaust guide portion 15 and the other end 23 b of the second inner cylinder divided body 23 of the inner cylinder 5 are welded E. While being fixed, the other end portion 15b (the other end side) of the exhaust guide portion 15 is inserted into the hole portion 14a of the flange 14 and is slidably attached. An outer cylinder 7 is provided so as to cover the inner cylinder 5 with a predetermined distance from the inner cylinder 5.
　すなわち、外筒７は、一端側をタービンハウジング本体２の外筒固定部１３に溶接により固定され、他端側をフランジ１４に溶接Ｅにより固定されており、外筒７は、内筒５と所定の間隔を空けて内筒５を覆うように設けられている。また、内筒５の突き合わせ部２２，２４は、外筒７に設けられた内筒挿通部８より外側に突出している。なお、他の構成は、上記した第２実施形態と同様の構成である。 That is, the outer cylinder 7 has one end fixed to the outer cylinder fixing portion 13 of the turbine housing body 2 by welding and the other end fixed to the flange 14 by welding E. The outer cylinder 7 is connected to the inner cylinder 5. It is provided so as to cover the inner cylinder 5 with a predetermined interval. Further, the abutting portions 22 and 24 of the inner cylinder 5 protrude outward from the inner cylinder insertion portion 8 provided in the outer cylinder 7. Other configurations are the same as those in the second embodiment described above.
　これにより、第２実施形態と同様の作用・効果を奏する。 Thereby, the same operation and effect as in the second embodiment are obtained.
　加えて、内筒５を覆うようにして外筒７が設けられているので、内筒５と排気ガイド部１５との隙間から排気が漏れた場合であっても、内筒５と外筒７との間に排気が充填されて、外筒７の外に排気が漏れることを防止することができる。このように、外筒７は、内筒５と所定間隔を空けて内筒５を覆うため、内筒５を保護すると同時に断熱し、かつ、タービンハウジングとしての剛性を高めることができる。 In addition, since the outer cylinder 7 is provided so as to cover the inner cylinder 5, even if the exhaust gas leaks from the gap between the inner cylinder 5 and the exhaust guide portion 15, the inner cylinder 5 and the outer cylinder 7. It is possible to prevent the exhaust gas from leaking out of the outer cylinder 7 by being filled with the exhaust gas. Thus, since the outer cylinder 7 covers the inner cylinder 5 at a predetermined interval from the inner cylinder 5, the outer cylinder 7 can be insulated while being protected, and the rigidity as the turbine housing can be increased.
　なお、前述の各実施形態によれば、内筒は第１内筒分割体と第２内筒分割体とから構成されているが、単一の部材によって内筒を形成しても良い。 In addition, according to each above-mentioned embodiment, although the inner cylinder is comprised from the 1st inner cylinder division body and the 2nd inner cylinder division body, you may form an inner cylinder with a single member.
　以上の本発明の実施形態は、本発明の理解を容易にするために記載された単なる例示に過ぎず、本発明は当該実施形態に限定されるものではない。本発明の技術的範囲は、上記実施形態で開示した具体的な技術事項に限らず、そこから容易に導きうる様々な変形、変更、代替技術なども含むものである。 The embodiment of the present invention described above is merely an example described for facilitating understanding of the present invention, and the present invention is not limited to the embodiment. The technical scope of the present invention is not limited to the specific technical matters disclosed in the above embodiment, but includes various modifications, changes, alternative techniques, and the like that can be easily derived therefrom.
　本出願は、２０１５年２月２５日に出願された日本国特許願第２０１５－０３５０９１号に基づく優先権を主張しており、これらの出願の全内容が参照により本明細書に組み込まれる。 This application claims priority based on Japanese Patent Application No. 2015-035091 filed on February 25, 2015, the entire contents of these applications are incorporated herein by reference.
　本発明によれば、タービンハウジングが排気ガイド部に、或いは、排気ガイド部がフランジの孔部に摺動自在に挿入されているため、排気の熱によりタービンハウジングが熱膨張した場合であっても、タービンハウジング或いは排気ガイド部が摺動することによって、タービンハウジングの熱膨張による変位を許容することができる。 According to the present invention, since the turbine housing is slidably inserted into the exhaust guide portion or the exhaust guide portion into the hole of the flange, even when the turbine housing is thermally expanded due to the heat of the exhaust. When the turbine housing or the exhaust guide portion slides, displacement due to thermal expansion of the turbine housing can be allowed.
　１　ターボチャージャ
　３　タービン
　５　内筒（タービンハウジング）
　７　外筒（タービンハウジング）
　１４　フランジ
　１４ａ　孔部
　１５　排気ガイド部
　１５ａ　一端部（一端側）
　１５ｂ　他端部（他端側）
　１９　羽根部（タービンホイール）
　２１，２３　内筒分割体（薄板部材）
　２７　排気流路
　Ａ　ターボチャージャハウジング部
　Ｅ　溶接部分（溶接） 1 Turbocharger 3 Turbine 5 Inner cylinder (turbine housing)
7 Outer cylinder (turbine housing)
14 flange 14a hole 15 exhaust guide 15a one end (one end side)
15b The other end (the other end)
19 Blade (turbine wheel)
21, 23 Inner cylinder divided body (thin plate member)
27 Exhaust flow path A Turbocharger housing part E Welded part (welded)

Claims (5)

  1. 　排気流路（２７）内に配置されるタービン（３）と、前記タービン（３）のタービンホイール（１９）を覆うタービンハウジング（５）と、前記タービンハウジング（５）の下流側に配置される排気管接続用のフランジ（１４）とを備えたターボチャージャ（１）であって、
    　前記タービンハウジング（５）と前記フランジ（１４）との間に排気ガイド部（１５）を有し、
    　　前記排気ガイド部（１５）の一端側（１５ａ）と前記タービンハウジング（５）の組合せ、及び、前記排気ガイド部（１５）の他端側（１５ｂ）と前記フランジ（１４）の組合せのうち、
    　一方の組合せ内の要素同士を溶接（Ｅ）により固定し、他方の組合せ内の要素同士を摺動自在に組み立てたこと
    を特徴とするターボチャージャ。     A turbine (3) disposed in the exhaust passage (27), a turbine housing (5) covering the turbine wheel (19) of the turbine (3), and disposed downstream of the turbine housing (5). A turbocharger (1) comprising a flange (14) for connecting an exhaust pipe,
    An exhaust guide (15) between the turbine housing (5) and the flange (14);
    Of the combination of one end side (15a) of the exhaust guide part (15) and the turbine housing (5), and the combination of the other end side (15b) of the exhaust guide part (15) and the flange (14),
    A turbocharger in which elements in one combination are fixed by welding (E) and the elements in the other combination are slidably assembled.
  2. 　請求項１に記載のターボチャージャ（１）であって、
    　前記排気ガイド部（１５）の一端側（１５ａ）と前記タービンハウジング（５）を摺動自在に組み立てると共に、前記排気ガイド部（１５）の他端側（１５ｂ）と前記フランジ（１４）を溶接（Ｅ）により固定したこと
    を特徴とするターボチャージャ。     A turbocharger (1) according to claim 1,
    The one end side (15a) of the exhaust guide part (15) and the turbine housing (5) are slidably assembled, and the other end side (15b) of the exhaust guide part (15) and the flange (14) are welded. A turbocharger fixed by (E).
  3. 　請求項１に記載のターボチャージャ（１）であって、
    　前記排気ガイド部（１５）の一端側（１５ａ）と前記タービンハウジング（５）を溶接（Ｅ）により固定すると共に、前記排気ガイド部（１５）の他端側（１５ｂ）と前記フランジ（１４）の孔部（１４ａ）を摺動自在に組み立てたこと
    を特徴とするターボチャージャ。     A turbocharger (1) according to claim 1,
    The one end side (15a) of the exhaust guide portion (15) and the turbine housing (5) are fixed by welding (E), and the other end side (15b) of the exhaust guide portion (15) and the flange (14). A turbocharger in which the hole (14a) is slidably assembled.
  4. 　請求項１乃至３のいずれか一項に記載のターボチャージャ（１）であって、
    　前記タービンハウジング（５）を、複数の薄板部材（２１，２３）より成る内筒（５）によって構成し、
    　前記内筒（５）との間に所定間隔を空けて該内筒（５）を覆う外筒（７）を更に有すること
    を特徴とするターボチャージャ。     A turbocharger (1) according to any one of claims 1 to 3,
    The turbine housing (5) is constituted by an inner cylinder (5) composed of a plurality of thin plate members (21, 23),
    The turbocharger further comprising an outer cylinder (7) that covers the inner cylinder (5) at a predetermined interval from the inner cylinder (5).
  5. 　排気流路（２７）内に配置されるタービン（３）と、前記タービン（３）のタービンホイール（１９）を覆うタービンハウジング（５）と、前記タービンハウジング（５）の下流側に配置される排気ガイド部（１５）及びフランジ（１４）とを備えたターボチャージャ（１）の製造方法であって、
    　前記タービンハウジング（５）と前記排気ガイド部（１５）と溶接（Ｅ）により固定して、前記タービンハウジング（５）と一体化された排気ガイド部（１５）を構成し、前記タービンハウジング（５）と一体化された排気ガイド部（１５）を前記フランジ（１４）に挿入すること、又は
    　前記フランジ（１４）と前記排気ガイド部（１５）と溶接（Ｅ）により固定して、前記フランジ（１４）と一体化された排気ガイド部（１５）を構成し、前記フランジ（１４）と一体化された排気ガイド部（１５）に前記タービンハウジング（５）を挿入すること
    を特徴とするターボチャージャの製造方法。     A turbine (3) disposed in the exhaust passage (27), a turbine housing (5) covering the turbine wheel (19) of the turbine (3), and disposed downstream of the turbine housing (5). A method of manufacturing a turbocharger (1) comprising an exhaust guide part (15) and a flange (14),
    The turbine housing (5) and the exhaust guide portion (15) are fixed by welding (E) to constitute an exhaust guide portion (15) integrated with the turbine housing (5), and the turbine housing (5) ) And an exhaust guide part (15) integrated with the flange (14), or fixed by welding (E) with the flange (14), the exhaust guide part (15), and the flange (14). A turbocharger comprising an exhaust guide part (15) integrated with 14) and inserting the turbine housing (5) into the exhaust guide part (15) integrated with the flange (14). Manufacturing method.
PCT/JP2016/050856 2015-02-25 2016-01-13 Turbocharger and manufacturing method therefor WO2016136313A1 (en)

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