WO2012127531A1 - Carter de turbine - Google Patents

Carter de turbine Download PDF

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Publication number
WO2012127531A1
WO2012127531A1 PCT/JP2011/001703 JP2011001703W WO2012127531A1 WO 2012127531 A1 WO2012127531 A1 WO 2012127531A1 JP 2011001703 W JP2011001703 W JP 2011001703W WO 2012127531 A1 WO2012127531 A1 WO 2012127531A1
Authority
WO
WIPO (PCT)
Prior art keywords
tubular body
gas introduction
inlet
introduction passage
turbine
Prior art date
Application number
PCT/JP2011/001703
Other languages
English (en)
Japanese (ja)
Inventor
佐藤　明
Original Assignee
アイシン高丘株式会社
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 アイシン高丘株式会社 filed Critical アイシン高丘株式会社
Priority to PCT/JP2011/001703 priority Critical patent/WO2012127531A1/fr
Priority to JP2013505616A priority patent/JP5667286B2/ja
Publication of WO2012127531A1 publication Critical patent/WO2012127531A1/fr

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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
    • F01D9/00—Stators
    • F01D9/02—Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles
    • F01D9/026—Scrolls for radial machines or engines
    • 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
    • F02C6/00—Plural gas-turbine plants; Combinations of gas-turbine plants with other apparatus; Adaptations of gas-turbine plants for special use
    • F02C6/04—Gas-turbine plants providing heated or pressurised working fluid for other apparatus, e.g. without mechanical power output
    • F02C6/10—Gas-turbine plants providing heated or pressurised working fluid for other apparatus, e.g. without mechanical power output supplying working fluid to a user, e.g. a chemical process, which returns working fluid to a turbine of the plant
    • F02C6/12—Turbochargers, i.e. plants for augmenting mechanical power output of internal-combustion piston engines by increase of charge pressure
    • 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
    • F01N13/14—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 having thermal insulation
    • F01N13/141—Double-walled exhaust pipes or housings
    • F01N13/143—Double-walled exhaust pipes or housings with air filling the space between both walls
    • 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
    • F01N2260/00—Exhaust treating devices having provisions not otherwise provided for
    • F01N2260/08—Exhaust treating devices having provisions not otherwise provided for for preventing heat loss or temperature drop, using other means than layers of heat-insulating material
    • 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
    • F01N2260/00—Exhaust treating devices having provisions not otherwise provided for
    • F01N2260/20—Exhaust treating devices having provisions not otherwise provided for for heat or sound protection, e.g. using a shield or specially shaped outer surface of exhaust device

Definitions

  • the present invention relates to a turbine housing, that is, a housing for an exhaust turbine in a turbocharger.
  • an exhaust gas purification catalyst is disposed in an exhaust system of an automobile engine.
  • a turbine housing which is a kind of exhaust system component, is also required to be thin, that is, to have a low heat capacity.
  • Traditional turbine housing is a cast product by casting.
  • the advantages of the cast housing are that the degree of freedom in setting the shape is large and the productivity is good, and that the use of heat-resistant steel and high rigidity are easy and the durability is excellent.
  • the disadvantages of cast housings are that they are generally heavy and have limitations on thinning.
  • the turbine housing In order to eliminate the disadvantages of the cast housing, it has been proposed to configure the turbine housing with a metal plate (see, for example, published patent No. 55-37508).
  • the advantage of the sheet metal housing is that the heat capacity can be reduced by reducing the thickness.
  • a sheet metal housing having a single wall structure is inferior in heat resistance and heat retention
  • a sheet metal housing having a double wall structure having an outer tube and an inner tube made of sheet metal has also been proposed.
  • the sheet metal housing having a double wall structure has a disadvantage that the productivity is low and the cost is high due to the large number of parts.
  • An object of the present invention is to provide a new turbine housing that combines the advantages of a cast housing and the advantages of a sheet metal housing having a double wall structure.
  • the present invention proposes an application range and a holding structure of a tubular body used to realize a double wall structure.
  • the present invention is a turbine housing for a turbocharger in which a scroll portion, an inlet portion and an inlet flange are integrally cast.
  • the scroll portion has a turbine chamber that houses the exhaust turbine, and a part of the turbine chamber forms an exhaust gas passage.
  • An outlet port for exhausting exhaust gas from the turbine chamber is provided at the front side center of the scroll portion.
  • the inlet portion is provided at a side portion of the scroll portion, and defines a gas introduction passage for introducing exhaust gas into the turbine chamber.
  • the inlet flange is provided at the outer end of the inlet portion so as to correspond to a connection flange provided in the engine head or the exhaust manifold.
  • the turbine housing of the present invention is characterized by the following three aspects (Aspects).
  • a tubular body for securing an air gap between the inner wall of the gas introduction passage is inserted into the gas introduction passage of the inlet portion.
  • the tubular body has an annular plate portion at or near its outer end.
  • the tubular body is supported in the gas introduction passage by the annular plate portion being sandwiched between the inlet flange and the connection flange of the engine head or the exhaust manifold.
  • a tubular body for securing an air gap between the inner wall of the gas introduction passage is inserted into the gas introduction passage of the inlet portion.
  • the tubular body has an annular ridge at or near its outer end.
  • the inlet has an annular groove formed in the inner wall of the gas introduction passage in the vicinity of the outer end of the gas introduction passage.
  • the tubular body is supported in the gas introduction passage by the annular protrusion being engaged with the annular groove.
  • a part of the inner wall forming the gas introduction passage of the inlet portion is configured as a tapered wall portion formed in a conical shape.
  • a tubular body for securing an air gap between the gas introduction passage and the inner wall of the gas introduction passage is inserted into the gas introduction passage of the inlet portion.
  • the tubular body includes a small diameter portion formed on the inner end side and a large diameter portion formed on the outer end side, and the large diameter portion has a larger diameter than the small diameter portion.
  • the tubular body is supported in the gas introduction passage by the outer end portion of the large-diameter portion being pressed by the connection flange and the inner end portion of the large-diameter portion contacting the tapered wall portion. Has been.
  • an air gap is secured between the tubular body and the inner wall of the gas introduction passage by inserting the tubular body into the gas introduction passage of the inlet portion, and the gas introduction passage is substantially formed. It becomes a double wall structure. As a result, the heat resistance and heat retention of the gas introduction passage are improved.
  • the housing main body including the inlet portion is made by casting, the turbine housing of the present invention is more productive than the all-sheet metal housing.
  • the exhaust gas that has passed through the gas introduction passage can contribute to the early activation of the exhaust gas purification catalyst when the engine is started at a low temperature.
  • the tubular body is supported in the gas introduction passage mainly through a structural portion (for example, an annular plate portion) on the outer end side thereof, the tubular body can be easily attached to and detached from the housing body, and can be appropriately replaced as necessary. is there. Therefore, the turbine housing of the present invention is excellent in maintainability.
  • FIG. 1 is a schematic diagram of a turbocharger structure.
  • 2A is a front view of the turbine housing
  • FIG. 2B is a longitudinal sectional view of the turbine housing.
  • FIG. 3A is a plan view showing the connection between the turbine housing and the exhaust manifold
  • FIG. 3B is a plan view showing the connection between the turbine housing and the engine head.
  • FIG. 4 is a graph showing the temperature distribution at the inlet of the turbine housing.
  • FIG. 5A is a cross-sectional view showing an example of the inlet portion of the turbine housing
  • FIG. 5B is a cross-sectional view showing another example of the inlet portion of the turbine housing.
  • FIG. 6 (A), (B), (C) and (D) are radial cross-sectional views showing examples of the inlet portion of the turbine housing.
  • FIG. 7A is a radial cross-sectional view showing an example of the inlet portion of the turbine housing
  • FIG. 7B is a front view showing the inlet flange.
  • FIGS. 8A and 8B are radial cross-sectional views showing examples of the inlet portion of the turbine housing.
  • FIG. 9 is a radial cross-sectional view showing an example of an inlet portion of the turbine housing.
  • FIG. 10 is a radial cross-sectional view showing another example of the inlet portion of the turbine housing.
  • FIG. 11 is a radial cross-sectional view showing still another example of the inlet portion of the turbine housing.
  • a turbocharger 1 for an automobile engine includes an exhaust turbine 3 and a compressor 4 that are coaxially connected via a connecting shaft 2, and three housings (5, 6, 7) that accommodate these.
  • the turbine housing 6 accommodates the exhaust turbine 3, the compressor housing 7 accommodates the compressor 4, and the center housing 5 disposed between the turbine and the compressor housing accommodates the connecting shaft 2.
  • a waste gate port 8 is set in the exhaust gas introduction region of the turbine housing 6, and the port 8 connects the outlet side of the turbine housing 6 (that is, the turbine housing 6 and the catalytic converter 12 for purifying exhaust gas) via the bypass passage 11. It is connected to the downstream exhaust passage 13).
  • the waste gate port 8 is opened and closed by a waste gate valve 9, and the valve 9 is operated by a known supercharging pressure control actuator (not shown).
  • a waste gate valve 9 is operated by a known supercharging pressure control actuator (not shown).
  • the turbine housing 6 includes a cast housing body in which a scroll portion 21, an inlet portion 25 and an inlet flange 27 are integrally cast.
  • the scroll part 21 has a turbine chamber 22 that houses an exhaust turbine.
  • a scroll-like exhaust gas passage 23 is defined by the peripheral area of the turbine chamber 22.
  • An outlet port 24 for discharging exhaust gas from the turbine chamber 22 is provided in the center of the front side of the scroll portion 21.
  • the inlet portion 25 is provided at a side portion of the scroll portion 21, and defines a gas introduction passage 26 for introducing exhaust gas into the turbine chamber 22.
  • a waste gate port 8 is set at the latter half position of the gas introduction passage 26.
  • An inlet flange 27 is provided at the outer end of the inlet portion 25.
  • the gas introduction passage 26 has an outer end located on the inlet flange 27 side and an inner end located on the turbine chamber 22 side.
  • the inlet flange 27 is configured as a counterpart flange corresponding to the connection flange 17 provided in the engine head 15 or the exhaust manifold 16.
  • a substantially cylindrical tubular body 30 is inserted and arranged in the gas introduction passage 26.
  • An air gap 31 is secured between the outer peripheral surface of the tubular body 30 and the inner wall of the gas introduction passage 26.
  • the gas introduction passage 26 has a substantially double wall structure, and various advantages such as those described in the above “Effects of the Invention” column, such as improvement in heat resistance and heat retention of the gas introduction passage, are brought about.
  • the tubular body 30 is preferably made by subjecting a metal plate such as a stainless steel plate to mechanical processing such as bending.
  • the tubular body 30 is preferably long enough to occupy the area between the inlet flange 27 and the wastegate port 8. It is not preferable that the tubular body 30 is disposed at a position that shields the waste gate port 8.
  • FIG. 3 (A) when the turbine housing of the present invention is connected to the exhaust manifold 16, the tongue portion 28 (FIG. 2 (B)) in the turbine housing 6 from the piping assembly portion of the exhaust manifold 16 is provided.
  • the surface temperature of the gas passage wall existing in the range up to (see) can be reduced as compared with the case where the tubular body 30 is not provided. And durability and reliability of a turbine housing can be improved.
  • FIG. 3B when the turbine housing of the present invention is connected to the engine head 15, there is an advantage different from the connection to the exhaust manifold 16.
  • the temperature of the head mounting surface is considerably low, whereas the region from the turbine housing inlet port to the tongue portion 28 is considerably hotter than the head mounting surface. is there. For this reason, as shown in the graph of FIG. 4, in the conventional example (in the case where there is no tubular body), the temperature distribution in the range from the inlet port to the tongue 28 is steep.
  • the tubular body 30 is applied to the inlet portion 25
  • the temperature distribution in the range from the inlet port to the tongue portion 28 is generally lower than that of the conventional example, and the temperature gradient is made gentle. be able to. Therefore, according to the present invention, durability and reliability of the turbine housing can be improved.
  • the tubular body 30 shown in FIG. 5 (A) has an annular plate portion 32 (for example, a ridge) formed at the outer end thereof.
  • the annular plate portion 32 is sandwiched between the inlet flange 27 and the connection flange 17 of the engine head or the exhaust manifold, so that the tubular body 30 is supported in the gas introduction passage 26 of the inlet portion 25.
  • the diameter of the main body portion of the tubular body 30 is set smaller than the inner diameter of the gas introduction passage 26, and an air gap 31 is secured between the outer peripheral surface of the main body portion of the tubular body 30 and the inner wall of the gas introduction passage 26.
  • An annular member 40 made of a metal mesh is fitted on the outside of the main body portion of the tubular body 30 and is fixed by spot welding.
  • the metal mesh annular member 40 is interposed between the tubular body 30 and the inner wall of the gas introduction passage 26 and supports the central portion or the inner end portion of the tubular body 30. That is, the metal mesh annular member 40 serves as a support member that supports a part of the tubular body 30 and serves as a spacer that secures the air gap 31 having a predetermined width. According to the structure of FIG. 5A, the tubular body 30 is stably held by the annular plate portion 32 sandwiched between the two flanges and the metal mesh annular member 40 that contacts the inner wall of the gas introduction passage 26. Is done. Further, since the high-temperature exhaust gas from the engine does not directly hit the inlet flange 27, it is possible to prevent or suppress the heat quantity from being taken from the exhaust gas through the inlet flange 27 having a large heat capacity.
  • FIG. 5 (B) shows the tubular body 30 when the gas introduction passage 26 is bent at the back of the inlet portion 25.
  • the inner end portion is formed as a curved portion 33. Since the flow of the exhaust gas is guided by the curved portion 33, the high-temperature exhaust gas does not directly hit the curved inner wall 26a of the gas introduction passage 26, and the curved inner wall 26a is a heat spot (a portion heated excessively). Can be avoided.
  • FIG. 6 (A) to 6 (D) show a support structure for the central portion or the inner end portion of the tubular body 30 that can replace the metal mesh annular member 40.
  • FIG. 6 and other drawings indicate the center axis of the tubular body 30 and the gas introduction passage 26.
  • a part of the inner wall forming the gas introduction passage 26 of the inlet 25 is formed as a conical surface and is provided as an inner wall 26b having a tapered longitudinal section. ing.
  • the peripheral edge 34 of the inner end of the tubular body 30 abuts on the tapered inner wall portion 26b, and supports the inner end portion of the tubular body 30.
  • a part of the inner wall forming the gas introduction passage 26 of the inlet portion 25 is provided as an inner wall portion 26b having a conical surface shape and a tapered longitudinal section.
  • the tubular body 30 has a protrusion 35 that protrudes radially outward from the outer peripheral surface of the main body.
  • the protrusion 35 may be a single annular protrusion, or a group of a plurality of protrusions arranged in the circumferential direction. And the single or several protrusion part 35 contact
  • the inner wall forming the gas introduction passage 26 of the inlet 25 extends substantially straight.
  • the tubular body 30 has a protrusion 35 that is disposed in the vicinity of the inner end thereof and protrudes radially outward from the outer peripheral surface thereof.
  • the protrusion 35 may be a single annular protrusion, or a group of a plurality of protrusions arranged in the circumferential direction. The single or plural protrusions 35 abut against the inner wall of the gas introduction passage 26 to support the inner end portion of the tubular body 30.
  • the inner wall forming the gas introduction passage 26 of the inlet 25 extends substantially straight.
  • the tubular body 30 has a bent end 36 formed by bending the inner end portion radially outward at the inner end thereof.
  • the bent end 36 may be a single annular body or a collection of a plurality of bent pieces arranged in the circumferential direction. The single or plural bent ends 36 abut against the inner wall of the gas introduction passage 26 to support the inner end portion of the tubular body 30.
  • FIG. 7 shows a modified example of the sandwiching structure of the annular plate portion 32.
  • the thickness t1 of the annular plate portion 32 is preferably set to 0.8 to 1.5 mm. Therefore, a clearance having a width corresponding to the thickness t1 exists between the flange facing surfaces of the connection flange 17 and the inlet flange 27.
  • an annular stepped portion 27a having a height t2 (t2 ⁇ t1) is provided on the flange facing surface of the inlet flange 27, an annular stepped portion 27a having a height t2 (t2 ⁇ t1) is provided on the flange facing surface of the inlet flange 27, an annular stepped portion 27a having a height t2 (t2 ⁇ t1) is provided on the flange facing surface of the inlet flange 27, an annular stepped portion 27a having a height t2 (t2 ⁇ t1) is provided on the flange facing surface of the inlet flange 27, an annular stepped portion 27a
  • the inlet flange 27 is provided with at least one positioning hole 27b (two in this example).
  • a positioning hole corresponding to the positioning hole 27b is provided in the connection flange 17, and a positioning hole corresponding to the positioning hole 27b is also formed through the annular plate portion 32.
  • the positioning hole 27b of the inlet flange 27, the positioning hole of the annular plate portion 32, and the positioning hole of the connection flange 17 are matched, and a positioning pin 42 (see FIG. 7A) penetrating these holes is attached.
  • positioning and rotation prevention of the tubular body 30 with respect to the inlet portion 25 and the inlet flange 27 can be achieved.
  • a structure using slits (notched recesses) 27c as shown in FIG. 7B is employed instead of or together with the structure of positioning and rotation prevention of the tubular body using the positioning pins 42. Also good. That is, the slit 27 c is formed in a part of the annular step portion 27 a of the inlet flange 27. An engaging protrusion that can engage with the slit 27 c is formed on the outer peripheral portion of the annular plate portion 32 of the tubular body 30. And the positioning and rotation prevention of the tubular body 30 are achieved by engaging the engagement protrusion of the annular plate portion 32 with the slit 27c.
  • FIG. 8A shows an example of a change in the sandwiching structure of the annular plate portion 32.
  • an annular stepped portion 27a is provided on the flange-facing surface of the inlet flange 27 as in the design of FIG.
  • An annular plate portion 32 of the tubular body 30 and a metal mesh ring 43 are sandwiched between the connection flange 17 and the inlet flange 27.
  • the metal mesh ring 43 is disposed between the annular plate portion 32 and the inlet flange 27.
  • the metal mesh constituting the ring 43 is preferably a stainless steel mesh.
  • the metal mesh ring 43 functions as a spacer that expands or contracts according to a temperature change. The use of the metal mesh ring 43 improves the durability and reliability of the tubular body 30 itself and its mounting structure.
  • FIG. 8B shows an example of a change in the sandwiching structure of the annular plate portion 32.
  • an annular stepped portion 27a is provided on the flange-facing surface of the inlet flange 27 as in the design of FIG.
  • the annular plate portion 32 of the tubular body 30 has a curled portion 32a processed into a spiral shape at the outer peripheral end thereof.
  • the curled portion 32a provides a thickness larger than the original thickness of the annular plate portion 32 (in this example, about three times the thickness).
  • the thickened curled portion 32 a is sandwiched between the connection flange 17 and the inlet flange 27.
  • FIG. 9 shows a modification example of the main body of the tubular body 30.
  • the body of the tubular body 30 may have an extended outer end 37 that extends into the inner region of the connection flange 17 of the engine head or exhaust manifold.
  • the annular plate portion 32 is fixed to the tubular body 30 by welding its inner peripheral edge portion 32b to the outer peripheral wall of the tubular body main body.
  • the exhaust gas purification catalyst is activated early by the high-temperature exhaust gas supplied to the catalytic converter 12 via the waste gate port 8, the bypass passage 11 and the downstream exhaust passage 13.
  • a turbine housing according to the second aspect of the present invention will be described with reference to FIG. It should be noted that common or common components of the turbine housing that have already been described are not redundantly described.
  • a tubular body 30 for securing an air gap 31 between the gas introduction passage 26 and the inner wall of the gas introduction passage 26 is inserted into the gas introduction passage 26 of the inlet 25 of the turbine housing.
  • the tubular body 30 in FIG. 10 has an annular ridge 51 formed so as to extend in the circumferential direction at the outer end thereof.
  • the annular protrusion 51 is provided as an annular rim or an annular plate portion.
  • the inlet portion 25 has an annular groove 52 formed on the inner wall of the gas introduction passage 26 in the vicinity of the outer end of the gas introduction passage 26.
  • the width of the annular groove 52 substantially corresponds to the width of the annular protrusion 51.
  • the depth of the annular groove 52c is set to 0.5 to 2.0 mm.
  • the tubular body 30 is supported in the gas introduction passage 26 by the annular protrusion 51 being engaged with the annular groove 52.
  • a tapered guide surface 53 formed in a conical surface is formed on the inner peripheral portion of the inlet flange 27. The tapered guide surface 53 acts to squeeze the annular ridge 51 toward the center when the tubular body 30 is inserted into the gas introduction passage 26, so that the annular ridge 51 enters the annular groove 52. Promotes smooth mating.
  • a metal mesh annular member 40 is adopted as an auxiliary structure for supporting the tubular body 30.
  • a support structure at the center or inner end of the tubular body 30 as shown in FIGS. 6 (A) to (D) may be adopted.
  • a turbine housing according to the third aspect of the present invention will be described with reference to FIG. It should be noted that common or common components of the turbine housing that have already been described are not redundantly described.
  • the inner peripheral portion of the inlet flange 27 is configured as a tapered wall portion 61 formed in a conical shape.
  • the tapered wall portion 61 is also a part of the inner wall that forms the gas introduction passage 26 of the inlet portion 25.
  • a tubular body 30 for securing an air gap 31 between the gas introduction passage 26 and the inner wall of the gas introduction passage 26 is inserted into the gas introduction passage 26.
  • the tubular body 30 in FIG. 11 includes a small diameter portion 62 formed on the inner end side, a large diameter portion 64 formed on the outer end side, and an intermediate portion 63 that connects the small diameter portion 62 and the large diameter portion 64. It is out.
  • the large diameter portion 64 has a larger diameter than the small diameter portion 62.
  • the outer end portion 64 a of the large diameter portion 64 is pressed from the connection flange 17. Then, the inner end portion 64 b of the large diameter portion 64 (that is, the boundary portion between the large diameter portion 64 and the intermediate portion 63) is forcibly brought into contact with the tapered wall portion 61. As a result, the large-diameter portion 64 is sandwiched between the connection flange 17 and the tapered wall portion 61, and the tubular body 30 is supported in the gas introduction passage 26.
  • a metal mesh annular member 40 is employed as an auxiliary structure for supporting the tubular body 30.
  • a support structure at the center or inner end of the tubular body 30 as shown in FIGS. 6 (A) to (D) may be adopted.
  • the turbine housing of the present invention can be applied to a turbocharger for an internal combustion engine such as an automobile engine.

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

Abstract

L'invention porte sur un carter de turbine qui comprend une section en volute, une section d'entrée (25) et une collerette d'entrée (27) qui sont coulées en une seule pièce. La section d'entrée (25) définit et forme un trajet d'introduction de gaz (26) servant pour l'introduction des gaz d'échappement dans une chambre de turbine située dans la section en volute. Un corps (30) en forme de tube, servant à établir un espace d'air (31) entre le corps en forme de tube (30) et la paroi intérieure du trajet d'introduction de gaz (26), est emboîté dans le trajet d'introduction de gaz (26). Le corps en forme de tube (30) comprend une section formant plaque annulaire (32) au droit de son extrémité extérieure. La section formant plaque annulaire (32) du corps en forme de tube (30) est serrée entre la collerette d'entrée (27) et la collerette de raccordement (17) d'une culasse ou d'un collecteur d'échappement et, de cette façon, le corps en forme de tube (30) est supporté dans le trajet d'introduction de gaz (26). Etant donné que l'espace d'air (31) est formé entre le corps en forme de tube et la paroi intérieure du trajet d'introduction de gaz, le trajet d'introduction de gaz (26) présente une structure sensiblement à double paroi et les propriétés de résistance à la chaleur et les propriétés de retenue de la chaleur du carter de turbine sont ainsi améliorées.
PCT/JP2011/001703 2011-03-23 2011-03-23 Carter de turbine WO2012127531A1 (fr)

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Application Number Priority Date Filing Date Title
PCT/JP2011/001703 WO2012127531A1 (fr) 2011-03-23 2011-03-23 Carter de turbine
JP2013505616A JP5667286B2 (ja) 2011-03-23 2011-03-23 タービンハウジング

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PCT/JP2011/001703 WO2012127531A1 (fr) 2011-03-23 2011-03-23 Carter de turbine

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WO2012127531A1 true WO2012127531A1 (fr) 2012-09-27

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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015022592A1 (fr) * 2013-08-16 2015-02-19 Wescast Industries, Inc. Carter de turbine
WO2017195441A1 (fr) * 2016-05-11 2017-11-16 株式会社Ihi Carter de turbine et dispositif de suralimentation
WO2018109933A1 (fr) * 2016-12-16 2018-06-21 三菱重工エンジン＆ターボチャージャ株式会社 Carter de turbine, turbine d'échappement et turbocompresseur
WO2018109934A1 (fr) * 2016-12-16 2018-06-21 三菱重工エンジン＆ターボチャージャ株式会社 Carter de turbine, turbine d'échappement et turbocompresseur
WO2019044777A1 (fr) * 2017-08-28 2019-03-07 株式会社豊田自動織機 Turbocompresseur
WO2019064388A1 (fr) * 2017-09-27 2019-04-04 三菱重工エンジン＆ターボチャージャ株式会社 Logement de turbine et compresseur de suralimentation équipé de celui-ci
CN110234855A (zh) * 2017-03-24 2019-09-13 三菱重工发动机和增压器株式会社 排气涡轮增压器用涡轮的壳体、排气涡轮增压器用涡轮及制造方法
JP2021055621A (ja) * 2019-09-30 2021-04-08 ダイハツ工業株式会社 排気ターボ過給機
JP2022181467A (ja) * 2021-05-26 2022-12-08 フタバ産業株式会社 排気管

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CN110234855B (zh) * 2017-03-24 2022-03-29 三菱重工发动机和增压器株式会社 排气涡轮增压器用涡轮的壳体、排气涡轮增压器用涡轮及制造方法
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JPWO2018173298A1 (ja) * 2017-03-24 2019-11-07 三菱重工エンジン＆ターボチャージャ株式会社 排気ターボ過給機用タービンのケーシング、排気ターボ過給機用タービン、及び製造方法
JPWO2019044777A1 (ja) * 2017-08-28 2020-09-03 株式会社豊田自動織機 ターボチャージャ
US11231047B2 (en) 2017-08-28 2022-01-25 Kabushiki Kaisha Toyota Jidoshokki Turbocharger
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JPWO2019064388A1 (ja) * 2017-09-27 2020-04-09 三菱重工エンジン＆ターボチャージャ株式会社 タービンハウジング及びこれを備えた過給機
WO2019064388A1 (fr) * 2017-09-27 2019-04-04 三菱重工エンジン＆ターボチャージャ株式会社 Logement de turbine et compresseur de suralimentation équipé de celui-ci
US11221022B2 (en) 2017-09-27 2022-01-11 Mitsubishi Heavy Industries Engine & Turbocharger, Ltd. Turbine housing and turbocharger including the same
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