EP0849465B1 - Schraubhülse zur Vorzentrierung - Google Patents

Schraubhülse zur Vorzentrierung Download PDF

Info

Publication number
EP0849465B1
EP0849465B1 EP97115780A EP97115780A EP0849465B1 EP 0849465 B1 EP0849465 B1 EP 0849465B1 EP 97115780 A EP97115780 A EP 97115780A EP 97115780 A EP97115780 A EP 97115780A EP 0849465 B1 EP0849465 B1 EP 0849465B1
Authority
EP
European Patent Office
Prior art keywords
section
screw sleeve
induction system
cylinder head
threaded sleeve
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
EP97115780A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0849465A2 (de
EP0849465A3 (de
Inventor
Eberhard Witzgall
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP0849465A2 publication Critical patent/EP0849465A2/de
Publication of EP0849465A3 publication Critical patent/EP0849465A3/de
Application granted granted Critical
Publication of EP0849465B1 publication Critical patent/EP0849465B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F1/00—Cylinders; Cylinder heads 
    • F02F1/24—Cylinder heads
    • F02F1/42—Shape or arrangement of intake or exhaust channels in cylinder heads
    • F02F1/4235—Shape or arrangement of intake or exhaust channels in cylinder heads of intake channels
    • 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
    • F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F7/00—Casings, e.g. crankcases or frames
    • F02F7/006—Camshaft or pushrod housings
    • F02F2007/0063—Head bolts; Arrangements of cylinder head bolts
    • 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
    • F02M35/10321—Plastics; Composites; Rubbers

Definitions

  • the present invention relates to an intake system with at least one device for attachment to a cylinder head for cylinders of an internal combustion engine according to the preamble of the main claim.
  • suction systems to cylinder heads, in particular motor vehicle engines
  • the attachment is usually effected by means of conventional sleeve screw systems. It turns out to be disadvantageous during assembly that the intake system must be held on the cylinder head until it has been screwed on.
  • the utility model DE 94 16 059 U shows a device for fastening a carburetor housing to an engine block.
  • a sleeve is screwed together with a nut into an internal thread provided on the carburetor housing.
  • the nut held by the sleeve on the carburetor housing is screwed to the thread provided on the engine block.
  • the present invention relates to an intake system, in particular for cylinders of an internal combustion engine with at least one device for attachment to a cylinder head, according to claim 1.
  • a suction system has the advantage that it can be simply plugged onto, for example, stud bolts of the cylinder head and pre-centering is carried out by means of the pre-centering section.
  • the suction system therefore does not have to be held firmly when screwing on, but is already fixed by plugging the pre-centering section onto the bolt.
  • the suction system can then be screwed on quickly, and automated assembly is advantageously possible.
  • the invention accordingly enables a particularly safe and simple assembly of suction systems on the cylinder head, in particular of motor vehicle engines.
  • the invention relates to a suction system with a bore for receiving the screw sleeve, the bore having an annular step or constriction or individual constrictions, such as knobs, arranged in a ring, on which a shoulder advantageously arranged on the outside of the screw sleeve can be supported that the screw sleeve can be pushed back when plugged onto a bolt of the cylinder head, but the screw sleeve is secured against being pushed out.
  • the inner diameter of the precentering section is larger than the inner diameter of the threaded section of the Threaded.
  • the threaded section of the screw sleeve is the area of the screw sleeve which is arranged between the precentering section and the screw sleeve middle section and has an internal thread which serves to receive a bolt or the like connecting the suction system to the cylinder head.
  • the invention also includes embodiments whose screw sleeves do not have a screw sleeve middle section, but essentially only comprise the pre-centering section, the threaded section and a screw sleeve head.
  • FIG. 1 a shows part of a suction system 5 comprising an upper part 1 and a lower part 3.
  • the suction system 5 is fastened on a cylinder head 9 having a stud bolt 7.
  • the suction system 5 has for its attachment to the cylinder head 9 inner bores 11, in each of which a screw sleeve 13 is inserted captively.
  • the screw sleeve 13 has a precentering section 17 on.
  • the pre-centering section 17 has no thread.
  • a threaded section 19 having a shaped thread is arranged between the screw sleeve middle section 21 and the pre-centering section 17.
  • the screw sleeve 13 has at its end 23 facing away from the cylinder head 9 a screw sleeve head 25 which can be designed as an external hexagon.
  • the screw sleeve head 25 has an annular shoulder 27, which is used to support a wall 28 of a bore 26 in the upper part 1 of the suction system 5.
  • the screw sleeve head 25 also serves to receive a plastic stopper 29 which closes the screw sleeve 13 in a water-tight manner.
  • the screw sleeves 13 are first inserted captively into the bore 11 of the plastic suction system 5 due to the shoulder 27 and a further device 31 to be explained.
  • the suction system is then placed on studs 7, in particular the upper regions 8 thereof, so that it is not necessary to hold the suction system during the subsequent screwing on.
  • the inner bore 11 has an annular constriction 31 or individual constrictions, such as knobs, arranged in a ring, which allows the screw sleeve 13 to be pushed back when it is plugged onto the stud bolt 7 due to a circumferential expansion of the threaded section 19, but prevents the screw sleeve from being pushed out, in particular due to shoulder 22 arranged in the transition region of the pre-centering section 17 to the threaded section 19 (FIG. 1b).
  • the suction system 5 can be screwed on very quickly, with the particularly long screw sleeves 13 ensuring good accessibility when screwing.
  • FIG. 2a shows a screw sleeve 13 with a pre-centering section 17, a threaded section 19, a screw sleeve middle section 21 and a screw sleeve head 25 having a shoulder 27 20 having threaded portion 19 corresponds.
  • the outside diameter of the pre-centering section 17 is slightly larger than the outside diameter of the threaded section 19, which in turn has a larger outside diameter than the screw sleeve middle section 21.
  • annular step or shoulder 22 In the transition area from the threaded section 19 to the pre-centering section 17 there is an annular step or shoulder 22.
  • the screw sleeve head 25 has an enlarged inside and outside diameter compared to the screw sleeve middle section 21.
  • Another annular step 24 (FIG. 2 b) is located in the transition area between the threaded middle section 21 and the screw sleeve head 25.
  • the outer diameter in the pre-centering section 17 and between the annular step 24 and shoulder 27 serves to guide the screw sleeve 13 in the plastic part. In these areas, large lateral forces can be safely transmitted via the outer ring surfaces.
  • the shoulder 22 is arranged so that the screw sleeve 13 can slide back into the bore 11.
  • the screw sleeve 13 is inserted into the inner bore 11 or 26 of the suction system 5, slipping in the direction of the cylinder head 9 being prevented by the formation of the shoulder 27. Slipping of the screw sleeve 13 when plugged onto the stud 7 is prevented by the formation of the annular step or shoulder 22, which comes into positive engagement with the annular constriction 31 of the inner bore 11 and fixes the screw sleeve 13 in its position.
  • FIG. 2 also clearly shows that when the suction system 5 is plugged onto the cylinder head 9, the upper region 8 of the stud bolt 7 can initially penetrate into the pre-centering section 17 without any further manipulation and thus holds the suction system 5 on the cylinder head 9. The screw sleeve 13 is then screwed tight, the threaded section 19 of the screw sleeve 13 being screwed onto the stud bolt 7.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)
  • Solid-Fuel Combustion (AREA)
EP97115780A 1996-12-18 1997-09-11 Schraubhülse zur Vorzentrierung Expired - Lifetime EP0849465B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19652748A DE19652748C1 (de) 1996-12-18 1996-12-18 Schraubhülse zur Vorzentrierung
DE19652748 1996-12-18

Publications (3)

Publication Number Publication Date
EP0849465A2 EP0849465A2 (de) 1998-06-24
EP0849465A3 EP0849465A3 (de) 1998-10-28
EP0849465B1 true EP0849465B1 (de) 2003-09-10

Family

ID=7815182

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97115780A Expired - Lifetime EP0849465B1 (de) 1996-12-18 1997-09-11 Schraubhülse zur Vorzentrierung

Country Status (4)

Country Link
EP (1) EP0849465B1 (cs)
CZ (1) CZ289160B6 (cs)
DE (2) DE19652748C1 (cs)
HU (1) HU221291B1 (cs)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021130725A1 (en) * 2019-12-24 2021-07-01 Fleetguard Filters Private Limited Cylinder cover for internal combustion engine

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4372120A (en) * 1979-10-26 1983-02-08 General Motors Corporation V-Type engine intake with vibration isolated manifold connector
US4428331A (en) * 1981-09-04 1984-01-31 General Motors Corporation V-Type engine intake with vibration isolated manifold
US4470378A (en) * 1982-09-29 1984-09-11 General Motors Corporation Engine with side wall mounted vibration isolated manifold
DE4221913C1 (de) * 1992-07-03 1994-01-27 Freudenberg Carl Fa Ansaugkrümmer für eine Verbrennungskraftmaschine mit einem Zylinderkopf
JPH0874677A (ja) * 1994-08-31 1996-03-19 Nissan Motor Co Ltd 内燃機関のｅｇｒバルブ取付構造
DE9416059U1 (de) * 1994-10-05 1994-12-01 Hahn, Karlheinz, 94315 Straubing Vergasergehäuse
JPH08246951A (ja) * 1995-03-09 1996-09-24 Nissan Motor Co Ltd 吸気マニホルド一体型ロッカカバー付内燃機関

Also Published As

Publication number Publication date
DE59710729D1 (de) 2003-10-16
DE19652748C1 (de) 1997-12-18
CZ289160B6 (cs) 2001-11-14
CZ404597A3 (cs) 1998-09-16
HUP9702483A3 (en) 2000-07-28
EP0849465A2 (de) 1998-06-24
EP0849465A3 (de) 1998-10-28
HU9702483D0 (en) 1998-03-02
HU221291B1 (en) 2002-09-28
HUP9702483A2 (hu) 1999-11-29

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