WO2008007530A1 - Collecteur d'échappement - Google Patents

Collecteur d'échappement Download PDF

Info

Publication number
WO2008007530A1
WO2008007530A1 PCT/JP2007/062677 JP2007062677W WO2008007530A1 WO 2008007530 A1 WO2008007530 A1 WO 2008007530A1 JP 2007062677 W JP2007062677 W JP 2007062677W WO 2008007530 A1 WO2008007530 A1 WO 2008007530A1
Authority
WO
WIPO (PCT)
Prior art keywords
exhaust gas
branch pipes
branch
exhaust
straight
Prior art date
Application number
PCT/JP2007/062677
Other languages
English (en)
Japanese (ja)
Inventor
Kunikazu Ban
Original Assignee
Calsonic Kansei Corporation
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 Calsonic Kansei Corporation filed Critical Calsonic Kansei Corporation
Publication of WO2008007530A1 publication Critical patent/WO2008007530A1/fr

Links

Classifications

    • 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
    • F01N13/10—Other arrangements or adaptations of exhaust conduits of exhaust manifolds
    • 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
    • F01N13/18—Construction facilitating manufacture, assembly, or disassembly
    • F01N13/1805—Fixing exhaust manifolds, exhaust pipes or pipe sections to each other, to engine or to vehicle body
    • F01N13/1811—Fixing exhaust manifolds, exhaust pipes or pipe sections to each other, to engine or to vehicle body with means permitting relative movement, e.g. compensation of thermal expansion or vibration
    • F01N13/1816—Fixing exhaust manifolds, exhaust pipes or pipe sections to each other, to engine or to vehicle body with means permitting relative movement, e.g. compensation of thermal expansion or vibration the pipe sections being joined together by flexible tubular elements only, e.g. using bellows or strip-wound pipes
    • 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
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
    • 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
    • F01N2470/00—Structure or shape of gas passages, pipes or tubes
    • F01N2470/06—Tubes being formed by assembly of stamped or otherwise deformed sheet-metal
    • 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
    • F01N2470/00—Structure or shape of gas passages, pipes or tubes
    • F01N2470/14—Plurality of outlet tubes, e.g. in parallel or with different length
    • 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
    • F01N2560/00—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics
    • F01N2560/02—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics the means being an exhaust gas sensor
    • F01N2560/025—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics the means being an exhaust gas sensor for measuring or detecting O2, e.g. lambda sensors

Definitions

  • the present invention relates to an exhaust manifold that constitutes a part of an exhaust system that exhausts exhaust from an engine of a vehicle.
  • Patent Document 1 Japanese Patent Application Laid-Open No. 2004-353583
  • the present invention has been made to solve the above-described problems, and an object of the present invention is to provide an exothermic hold that can stably absorb thermal expansion and contraction of a branch pipe. There is.
  • the exhaust gas hold according to the present invention has a plurality of branch pipes, each having an exhaust gas upstream end connected to a head flange and having different overall lengths, and an exhaust gas downstream side of each branch pipe. And an aggregate holder that collects and accommodates end portions of the plurality of branch pipes.
  • a straight straight pipe portion is formed at a substantially central portion in the longitudinal direction, and a bellows-like thermal deformation absorbing portion is provided on the straight pipe portion.
  • the exhaust gas upstream end is connected to the head flange, and the plurality of branch pipes having different overall lengths, and the exhaust gas of each of the branch pipes
  • an exhaust manifold comprising a collecting portion for collecting and accommodating downstream ends, a straight straight line is provided at a substantially central portion in the longitudinal direction of the branch tube having the longest overall length among the plurality of branch tubes. Since the tube portion is formed and the bellows-like thermal deformation absorbing portion is provided in the straight tube portion, the thermal expansion and contraction of the branch tube can be stably absorbed.
  • FIG. 1 is a front view showing an ex- summa second hold according to a first embodiment of the present invention.
  • FIG. 2 is a cross-sectional view taken along line S2-S2 in FIG.
  • FIG. 3 is a perspective view showing a partition part of an ex- summer hold according to the first embodiment.
  • FIG. 4 is a side sectional view for explaining the inside of the thermal deformation absorbing portion of the first embodiment.
  • FIG. 1 is a front view showing the exhaust hold according to the first embodiment of the present invention
  • FIG. 2 is a cross-sectional view taken along the line S2-S2 of FIG. 1
  • FIG. 3 is a partition section of the exhaust hold according to the first embodiment
  • FIG. 4 is a side sectional view for explaining the inside of the thermal deformation absorbing portion of the first embodiment.
  • the Exhaust Motor Hold A of Example 1 includes a head flange 1, four branch pipes 2 to 5, a collecting portion 6, a catalytic converter 7, and an oxygen sensor 8. ing
  • the branch pipes 2 to 5 are each formed in a shape curved downward from a plate-like head flange 1 connected to a cylinder head of an engine (not shown). Further, the branch pipes 2 to 5 have different overall lengths, and each exhaust gas upstream end is connected to a corresponding mounting hole (not shown) of the head flange 1, while each exhaust gas downstream end described later 2a to 5a are gathered and connected to the exhaust gas upstream end 6a of the gathering part 6.
  • the exhaust gas downstream end 6b of the collecting portion 6 is connected to the exhaust gas upstream end of the catalytic converter 7 containing the catalyst carrier 7a. Further, a flange 7b for connecting to an exhaust gas downstream exhaust pipe (not shown) is provided at the exhaust gas downstream end of the catalytic converter 7.
  • the oxygen sensor 8 detects the concentration of oxygen contained in the exhaust gas passing through the collecting portion 6 and It is used for feedback control of the air-fuel ratio of the gin, and is fixed in a state where the sensing part 8a provided on one end side is inserted and arranged at the center of the collecting part 6 (exhaust gas flow). Yes.
  • the exhaust gas downstream end portions 2a to 5a of the branch pipes 2 to 5 are processed into a 1Z4 circular cross-sectional shape and overlapped in a circular shape, and the exhaust gas of the collecting portion 6 It is accommodated in the upstream end 6a.
  • the plate-like partition plate 10 (see FIG. 3) is interposed, the partition plate 10 is fixed to the wall portions 2b to 5b of the branch pipes 2 to 5 by welding XI, and the adjacent wall portions 2c to 5c is fixed by welding X2.
  • a straight straight pipe portion 11 is formed at the longitudinal central portion of the branch pipe 2 having the longest overall length among the branch pipes 2 to 5, and the straight pipe portion. 11 is formed with a linear thermal deformation absorbing portion 12.
  • the thermal deformation absorber 12 of the first embodiment performs a plurality of waves by performing a hydraulic bulge forming process in a molding die outside the figure when the branch pipe 2 is formed. It is formed in a bellows shape having 12a.
  • the number of waves 12a formed, the pitch P, the height H, and the like can be set as appropriate.
  • the thermal deformation absorbing portion 12 is provided on the exhaust gas downstream side (collecting portion 6 side) side of the straight portion 11 and is formed to be somewhat longer than the half length of the straight portion 11.
  • the bellows-like thermal deformation absorbing portion 12 of the first embodiment is provided somewhat downstream of the exhaust gas downstream from the longitudinal central portion of the branch pipe 2.
  • the constituent members described above are all made of metal.
  • the catalyst carrier 7a of the catalyst converter 7 may be a ceramic catalyst carrier that is not limited to this.
  • the head flange 1 is connected to the cylinder head of the engine (not shown), while the flange portion 7b of the catalytic converter 7 is connected to the exhaust gas downstream exhaust pipe (not shown).
  • each of the branch pipes 2 to 5 is constrained between the head flange 1 and the gathering portion 6.
  • the branch pipes 2 to 5 are expanded in a curved shape (while increasing the curvature thereof) by the heat of the exhaust gas that also circulates the exhaust gas upstream force inside the exhaust hold A.
  • the straight straight pipe portion 11 is formed at the longitudinal center portion of the branch pipe 2, and this straight pipe Since the thermal deformation absorption part 12 is formed in the part 11, the thermal expansion / contraction from the straight pipe part 11 to the exhaust gas upstream end and the thermal expansion / contraction from the straight pipe part 11 to the exhaust gas downstream end Can be stably absorbed by the wave 12a of the thermal deformation absorber 12.
  • the thermal deformation absorbing portion 12 is exhausted with respect to the central position of the length of the straight portion 11. This is suitable because it is formed somewhat longer toward the gas downstream side (collecting portion side).
  • the thermal deformation absorbing portion 12 is provided in a curved portion by omitting the straight pipe portion 11, the directions of thermal expansion and contraction are multi-directional, so that the thermal deformation absorbing portion 12 is stable. The effect cannot be obtained.
  • the exhaust gas upstream end is connected to the head flange 1 and a plurality of branch pipes 2 to 5 having different overall lengths, and each branch.
  • Exhaust gas downstream end 2a to 5a of pipes 2 to 5 are collected and accommodated.
  • Exhaust gas hold A having a collecting part 6 has at least the longest length of a plurality of branch pipes 2 to 5. Since the straight straight pipe portion 11 is formed at the substantially central portion in the longitudinal direction of the long branch pipe 2, and the bellows-like heat deformation absorbing portion 12 is provided in the straight pipe portion 11, The thermal expansion / contraction of the branch pipe 2 can be absorbed stably.
  • the straight pipe portion 11 provided with the bellows-like heat deformation absorbing portion 12 is linear, when forming by a hydraulic bulge forming process, the processing is immediately reduced and the residual stress after forming is small. It can be suppressed and is less likely to break even after repeated expansion and contraction.
  • the present invention is not limited to the above-described embodiment, and design changes and the like within a scope not departing from the gist of the present invention are included in the present invention.
  • the number of branch pipes can be appropriately set according to the number of cylinders of the engine.
  • the length of the straight pipe portion can be set as appropriate, and the length of the heat deformation absorbing portion can also be set as appropriate within the range of the length of the straight pipe portion.
  • branch pipe 2 In addition to the branch pipe 2, the other branch pipes 3, 4, and 5 may be provided with the straight pipe portion 11 and the thermal deformation absorbing portion 12, respectively.

Landscapes

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

Abstract

Collecteur d'échappement qui comporte des tuyaux ramifiés (2 à 5) dont les extrémités se trouvant du côté amont des gaz d'échappement sont raccordées à une bride de tête (1) et dont les longueurs sont différentes, et une partie collectrice (6) destinée à recevoir collectivement les extrémités (2a à 5a) des tuyaux ramifiés (2 à 5) se trouvant du côté aval des gaz d'échappement. Une partie de tuyau (11) droite linéaire est formée pratiquement au point médian d'au moins le tuyau ramifié (2) ayant la plus grande longueur totale parmi les tuyaux ramifiés (2 à 5) et une partie d'absorption (12) thermiquement déformable de type soufflet est située dans la partie de tuyau droite (11).
PCT/JP2007/062677 2006-07-10 2007-06-25 Collecteur d'échappement WO2008007530A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2006189736A JP2008019722A (ja) 2006-07-10 2006-07-10 エキゾーストマニホールド
JP2006-189736 2006-07-10

Publications (1)

Publication Number Publication Date
WO2008007530A1 true WO2008007530A1 (fr) 2008-01-17

Family

ID=38923095

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2007/062677 WO2008007530A1 (fr) 2006-07-10 2007-06-25 Collecteur d'échappement

Country Status (2)

Country Link
JP (1) JP2008019722A (fr)
WO (1) WO2008007530A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104329155A (zh) * 2014-11-19 2015-02-04 柳州市莫尔斯汽配制造有限公司 汽车排气管结构

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06200755A (ja) * 1992-12-28 1994-07-19 Toyota Motor Corp 車両用ｖ型エンジンの排気マニホールド
JP2005076605A (ja) * 2003-09-03 2005-03-24 Mitsubishi Automob Eng Co Ltd 二重構造排気システム

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06200755A (ja) * 1992-12-28 1994-07-19 Toyota Motor Corp 車両用ｖ型エンジンの排気マニホールド
JP2005076605A (ja) * 2003-09-03 2005-03-24 Mitsubishi Automob Eng Co Ltd 二重構造排気システム

Also Published As

Publication number Publication date
JP2008019722A (ja) 2008-01-31

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