EP1013918B1 - Intake manifold - Google Patents

Intake manifold Download PDF

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Publication number
EP1013918B1
EP1013918B1 EP99310372A EP99310372A EP1013918B1 EP 1013918 B1 EP1013918 B1 EP 1013918B1 EP 99310372 A EP99310372 A EP 99310372A EP 99310372 A EP99310372 A EP 99310372A EP 1013918 B1 EP1013918 B1 EP 1013918B1
Authority
EP
European Patent Office
Prior art keywords
brazing
side member
intake manifold
furnace
branch tubes
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP99310372A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1013918A3 (en
EP1013918A2 (en
Inventor
Masatoshi c/o Aichi Kikai Kogyo K.K. Hada
Yasuo c/o Sanoh Kogyo K.K. Sunaga
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Aichi Machine Industry Co Ltd
Sanoh Industrial Co Ltd
Original Assignee
Aichi Machine Industry Co Ltd
Sanoh Industrial Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Aichi Machine Industry Co Ltd, Sanoh Industrial Co Ltd filed Critical Aichi Machine Industry Co Ltd
Publication of EP1013918A2 publication Critical patent/EP1013918A2/en
Publication of EP1013918A3 publication Critical patent/EP1013918A3/en
Application granted granted Critical
Publication of EP1013918B1 publication Critical patent/EP1013918B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/10—Air intakes; Induction systems
    • F02M35/104—Intake manifolds
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/10—Air intakes; Induction systems
    • F02M35/104—Intake manifolds
    • F02M35/112—Intake manifolds for engines with cylinders all in one line
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/10—Air intakes; Induction systems
    • F02M35/10006—Air intakes; Induction systems characterised by the position of elements of the air intake system in direction of the air intake flow, i.e. between ambient air inlet and supply to the combustion chamber
    • F02M35/10078—Connections of intake systems to the engine
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/10—Air intakes; Induction systems
    • F02M35/10091—Air intakes; Induction systems characterised by details of intake ducts: shapes; connections; arrangements
    • F02M35/10144—Connections of intake ducts to each other or to another device
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/10—Air intakes; Induction systems
    • F02M35/10314—Materials for intake systems
    • F02M35/10327—Metals; Alloys
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/10—Air intakes; Induction systems
    • F02M35/1034—Manufacturing and assembling intake systems
    • F02M35/10354—Joining multiple sections together
    • F02M35/1036—Joining multiple sections together by welding, bonding or the like
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
    • F05C2225/00—Synthetic polymers, e.g. plastics; Rubber
    • F05C2225/08—Thermoplastics

Definitions

  • the present invention relates to an intake manifold for use with an automobile gasoline engine or an automobile diesel engine, as shown for example in US-A-5 400 951.
  • an intake manifold for use with a gasoline engine for an automotive vehicle is provided, as shown in a schematic view of Fig. 5, in which a plurality of branch tubes 53 are connected at one end to a flange 51 joined to an intake port of the engine and at the other end to a surge tank 52 joined to a throttle chamber.
  • the assembly including the branch tubes 53 and the surge tank 52 is generally formed by metal casting, the freedom for designing the passage of the branch tubes 53 is lowered due to various limitations of the casting such as the separation of molds. Also, the distribution of molten metal requires a considerable thickness of casting, hence increasing the overall weight of a casting.
  • an intake manifold is disclosed in Japanese Patent Laid-open Publication (Hei)4-350353 in which the branch tubes 53 are fabricated by bending and joining by brazing in a furnace a set of aluminum alloy pipes at both ends to the flange 51 and the surge tank 52 of aluminum casting.
  • the joining the branch tubes 53 to the flange 51 and the surge tank 52 by brazing in a furnace provides high air-tightness at the joints thus allowing the mass production.
  • the joining by brazing in a furnace where they are heated up under a high-temperature atmosphere with a brazing material being melted may cause thermal deformation due to a difference in the thermal capacity between the two materials to be joined.
  • the branch tubes 53 are dislocated from their correct position to the brazing region 54 of the surface tank 52 and may decline their function.
  • the branch tubes 53 of aluminum alloy and the surge tank 52 of aluminum casting are possibly annealed hence decreasing the physical strength.
  • the joint portion is formed with threaded holes for tightening stays and brackets by means of screws, the physical strength of the joint portion will significantly be declined.
  • an intake manifold having a plurality of branch tubes each joined by brazing in a furnace at one end to a flange which is to be on the engine side and at the other end to a surge tank which is to be on the throttle chamber side, said surge tank being made into two pieces, said pieces being a brazing side member to which the branch tubes are joined by brazing in a furnace and a non-heating side member which is not subjected to the brazing operation in the furnace but is joined to the brazing side member by fasteners.
  • the invention also provides an internal combustion engine including such an intake manifold.
  • the peening tool can be set into the brazing side member so as to fix the brazing side member and the branch tubes to each other at a predetermined joining position by peen locking.
  • the joined parts are then subjected to the brazing in the furance. Accordingly, the joining operation can accurately be made without causing any positional discrepancy while providing a significant degree of air-tightness.
  • a common, low cost aluminum casting method can be employed with no use of cores.
  • the non-heating side member can be fabricated of a low-melting point aluminum alloy which is available at lower cost
  • the non-heating side member may be reinforced by a reinforcement member such as a stay. Since the non-heating side member of the surge tank remains outside the furnace and is not declined in the physical strength, it can be provided with a female thread or the like by means of which the reinforcement member such as a stay can be mounted for rigidly supporting the entirety of the surge tank.
  • Fig. 1 is a schematic exploded view of an intake manifold that has a surge tank joined to a throttle chamber (not shown).
  • the intake manifold is separated into two pieces or a brazing side member 1 and a non-heating side member 2.
  • the brazing side member 1 is formed of, for example, aluminum alloy casting having a high melting point.
  • the brazing side member 1 has an inner wall portion 1a and an outer edge portion 1b.
  • the outer edge portion 1b is disposed about the inner wall portion 1a and is provided with bolt holes 1c.
  • Four openings 1d are formed in the inner wall portion 1a and are arranged at equal intervals. As shown in an enlarged cross sectional view of Fig.
  • a projection 1e is formed about each opening 1d and is integral with the outer side of the inner wall portion 1a.
  • Branch tubes 3 are made of aluminum pipes.
  • Each of the branch tubes 3 is inserted at one end from the outside into the opening 1d and is then peen-locked to the projection 1e by forcibly inserting a peening tool K into the branch tube 3, so that each of the branch tubes 3 can be fixed accurately in a predetermined position.
  • the peening tool K serves to forcibly expand each of the branch tubes 3 so as to be press-fitted against the projection le.
  • the brazing side member 1 is placed in a furnace so as to braze the one end of each branch tube 3 and the projection 1e to each other.
  • the brazing operation is carried out with a uniform clearance between each two adjacent brazing portions and with a uniform brazing length of the brazing portions. Accordingly, the brazing operation in the furnace can offer a higher degree of air-tightness without any positional discrepancy.
  • each branch tube 3 can be joined to a flange 6, which is connected to an intake port (not shown), can be made in the same manner as the arrangement shown in Fig. 2.
  • the peen-locking operation using the peening tool K is first made to determine the brazing position, and the brazing operation in the furnace is then carried out to provide a reliable air-tightness.
  • the non-heating side member 2 of the surge tank is formed by casting, for example, of an aluminum alloy having a low melting point.
  • the non-heating side member 2 has an inner wall 2a and an outer edge portion 2b.
  • the outer edge portion 2b is provided with bolt holes 2c and is formed integrally with the inner wall 2a.
  • the inner wall 2a is adapted to be positioned opposite to the inner wall 1a of the brazing side member 1.
  • the surge tank is completed and may have a shape that is identical with the conventional ones.
  • the non-heating side member 2 requires no brazing process in a furnace and therefore is not heated in the furnace, hence maintaining its physical strength. This will allow a reinforcement member or a stay 5 to be tightened to the non-heating side member 2 by means of a bolt that is screwed into its corresponding female thread provided in the non-heating side member 2.
  • brazing side member 1 and the non-heating side member 2 are separated from each other, they can be fabricated by aluminum casting at lower cost without use of cores.
  • the brazing side member 1 is low in the thermal capacity since it is separated.
  • any positional discrepancy between the brazing side member 1 and the branch tubes 3 can be eliminated during the joining by brazing of the branch tubes 3 to the brazing side member 1.
  • the positioning operation in this embodiment is assisted by the peen-locking with the peening tool K, the positional discrepancy may reliably be eliminated.
  • a brazing side member 1 of a surge tank to which one end of each of four branch tubes 3 is joined, has an inner wall portion 1a with opposite openings 1d.
  • a projection 1e is formed about each opening 1d to project outwardly.
  • One end of each branch tube 3 is peen-locked by using a peening tool K so as to be fixed in position in the projection le. After positioned by the peen-locking operation, they are placed in a furnace for brazing. Because the brazing operation in the furnace is carried out with no positional discrepancy allowed, a higher degree of air-tightness may be provided.
  • each of the branch tubes 3 to a flange 6 is made by brazing after positioned by the peen-locking operation using a peening tool K. Accordingly, any positional discrepancy may be eliminated and a higher degree of air-tightness may be ensured.
  • a separate non-heating member 2 is securely tightened by bolts 4 to the upper side of the brazing side member 1.
  • the non-heating member 2 is neither placed in the furnace nor subjected to the heating process, so that its physical strength can be guaranteed. This will allow a stay 5 or the like to be joined to the non-heating member 2, for example, by a bolt that is screwed into its corresponding female thread provided in the non-heating member 2.
  • the stay 5 or the like may be joined to the non-heating side member 2 which is not declined in the physical strength. Therefore, the effect of vibration to an automobile can be reduced when the entire surge tank is mounted on the automobile. Also, the non-heating side member 2 is not subjected to the heating process and can thus be fabricated from a low-melting point aluminum alloy at lower cost.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Fuel-Injection Apparatus (AREA)
  • Connection Of Plates (AREA)
  • Branch Pipes, Bends, And The Like (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)
  • Characterised By The Charging Evacuation (AREA)
EP99310372A 1998-12-25 1999-12-21 Intake manifold Expired - Lifetime EP1013918B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP37688498 1998-12-25
JP37688498A JP3395060B2 (ja) 1998-12-25 1998-12-25 インテークマニホールド

Publications (3)

Publication Number Publication Date
EP1013918A2 EP1013918A2 (en) 2000-06-28
EP1013918A3 EP1013918A3 (en) 2000-10-18
EP1013918B1 true EP1013918B1 (en) 2004-03-17

Family

ID=18507895

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99310372A Expired - Lifetime EP1013918B1 (en) 1998-12-25 1999-12-21 Intake manifold

Country Status (6)

Country Link
EP (1) EP1013918B1 (ko)
JP (1) JP3395060B2 (ko)
KR (1) KR100524206B1 (ko)
DE (1) DE69915573T2 (ko)
MX (1) MXPA99011566A (ko)
TW (1) TW491928B (ko)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20040049641A (ko) * 2002-12-06 2004-06-12 현대자동차주식회사 엔진 흡기계 마운터
FR2907514A3 (fr) * 2006-10-19 2008-04-25 Renault Sas Repartiteur d'admission d'air
CN101333983B (zh) * 2007-06-27 2012-09-26 力帆实业(集团)股份有限公司 滤油式发动机进气歧管

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5253616A (en) * 1992-01-15 1993-10-19 Cmi International, Inc. Tubular intake manifold and method for making same
FR2697293B1 (fr) * 1992-10-26 1994-11-10 Solex Dispositif d'alimentation à tubulure intégrée.
US5400951A (en) * 1993-08-31 1995-03-28 Showa Aluminum Corporation Method of brazing a joint portion of an intake manifold with preplaced brazing
JPH084609A (ja) * 1994-06-16 1996-01-09 Futaba Sangyo Kk インテークマニホルド

Also Published As

Publication number Publication date
JP3395060B2 (ja) 2003-04-07
EP1013918A3 (en) 2000-10-18
EP1013918A2 (en) 2000-06-28
DE69915573D1 (de) 2004-04-22
KR20000048348A (ko) 2000-07-25
DE69915573T2 (de) 2004-12-30
MXPA99011566A (es) 2004-08-10
TW491928B (en) 2002-06-21
KR100524206B1 (ko) 2005-10-26
JP2000192866A (ja) 2000-07-11

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