GB2299375A - I.c.engine air intake manifold - Google Patents

I.c.engine air intake manifold Download PDF

Info

Publication number
GB2299375A
GB2299375A GB9606115A GB9606115A GB2299375A GB 2299375 A GB2299375 A GB 2299375A GB 9606115 A GB9606115 A GB 9606115A GB 9606115 A GB9606115 A GB 9606115A GB 2299375 A GB2299375 A GB 2299375A
Authority
GB
United Kingdom
Prior art keywords
air intake
intake system
casing
volume
bodies
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.)
Granted
Application number
GB9606115A
Other versions
GB2299375B (en
GB9606115D0 (en
Inventor
Jakob Erfurt
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.)
Volkswagen AG
Original Assignee
Volkswagen AG
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 Volkswagen AG filed Critical Volkswagen AG
Publication of GB9606115D0 publication Critical patent/GB9606115D0/en
Publication of GB2299375A publication Critical patent/GB2299375A/en
Application granted granted Critical
Publication of GB2299375B publication Critical patent/GB2299375B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

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
    • F02M35/10242—Devices or means connected to or integrated into air intakes; Air intakes combined with other engine or vehicle parts
    • F02M35/10301—Flexible, resilient, pivotally or movable parts; Membranes
    • 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
    • F02B27/00—Use of kinetic or wave energy of charge in induction systems, or of combustion residues in exhaust systems, for improving quantity of charge or for increasing removal of combustion residues
    • F02B27/005—Oscillating pipes with charging achieved by arrangement, dimensions or shapes of intakes pipes or chambers; Ram air pipes
    • F02B27/006—Oscillating pipes with charging achieved by arrangement, dimensions or shapes of intakes pipes or chambers; Ram air pipes of intake runners
    • 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
    • F02M35/10026—Plenum chambers
    • F02M35/10039—Intake ducts situated partly within or on the plenum chamber housing
    • 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
    • F02M35/10111—Substantially V-, C- or U-shaped ducts in direction of the flow path
    • 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
    • F02M35/12—Intake silencers ; Sound modulation, transmission or amplification
    • F02M35/1205—Flow throttling or guiding
    • F02M35/1211—Flow throttling or guiding by using inserts in the air intake flow path, e.g. baffles, throttles or orifices; Flow guides
    • 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
    • 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
    • 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

Abstract

The internal volume of a plastics manifold 2, formed in two parts connected by friction welding at a parting plane (T, Fig. 2), is variable to suit engines of different capacity by inserting one or more bodies 7 into the manifold. The bodies 7 may have flanges (9, Fig. 3) friction welded to the manifold and be of different shape (Figs. 4 to 7).

Description

DESCRIPTION AN AIR INTAKE SYSTEM FOR AN INTERNAL COMBUSTION ENGINE The present invention relates to an air intake system for an internal combustion engine.
More particularly the present invention relates to an air intake system comprising a casing which is provided with an air inlet and in which is formed a manifold volume that connects the air inlet to inlet ports of the internal combustion engine by means of intake pipes arranged in the casing and with a displacement body arranged in the manifold volume.
An air intake system of the generic type is known from the German periodical "Motortechnische Zeitschrift" 53 (1992), No. 5, page 207 and No. 7/8, page 310. This system has a casing provided with an air inlet and having a manifold volume arranged in it.
Arranged in this casing are intake pipes which connect the air inlet to inlet ports of the internal combustion engine. This air intake system is used for two essentially identical internal combustion engines with different swept volumes, the routing of the flow being identical but the intake-pipe cross-sections being adapted to the respective swept volume. The internal combustion engine with the smaller swept volume furthermore has a displacement body which is fitted in the manifold volume and is intended to optimise the dynamic response.
The disadvantage in the assembly of this prior art construction is the insertion of this displacement body into the manifold volume since the entire intake system is of one-piece design. The displacement body can therefore only be pushed through an end opening of comparatively small dimensions by adaptation of its external shape. Fastening in a manner appropriate to the mechanical and aerodynamic vibrations seems problematic.
The aim of the present invention is to provide an air intake system for an internal combustion engine which can be adapted to different internal combustion engines of a series in a simple and economical manner while retaining the same essential components.
According to the present invention there is provided an air intake system for an internal combustion engine, comprising a casing which is provided with an air inlet and in which is formed a manifold volume that connects the air inlet to inlet ports of the internal combustion engine by means of intake pipes arranged in the casing, the casing being formed essentially by two casing parts which adjoin one another in a common parting plane, and a displacement body arranged in the manifold volume, being designed as a dead volume closed off relative to the manifold volume.
If, in an intake system with a displacement body arranged in the manifold volume, the casing is divided along a parting plane and the dead volume of the displacement body is closed off relative to the manifold volume, the possibility of simple adaptation to different internal combustion engines of a series by the insertion of displacement bodies of different volumes while, in an economical manner, retaining the casing is, on the one hand, provided. On the other hand, good adaptation in terms of flow is achieved by the fact that the dead volume surrounded by the displacement body is designed so as to be separate from the manifold volume.
It is thus advantageously possible by inserting the displacement body to adapt the manifold volume through which flow occurs to different swept volumes of the internal combustion engine to achieve a favourable supply of fresh air. Since the air intake system can be used identically in other respects, corresponding development, testing and tooling costs are incurred only once and for a relatively large batch quantity.
For better adaptation in terms of flow, the dead volume can, in a further advantageous development of the present invention, be arranged in such a way in the manifold volume that the air flowing through flows around its surface on all sides, this dead volume extending on both sides of the parting plane for the purpose of achieving favourable flow around it.
To avoid noise-generating vibrations and permit central air entry into the manifold volume, the displacement body can preferably be formed by a plurality of part-bodies which do not touch one another and are arranged along a longitudinal direction of the casing.
In one embodiment of the present invention, the aforementioned part-bodies can be designed as cupshaped dead volumes and arranged in openings in lateral walls of the casing. This manner of fastening advantageously does not require any support within the manifold volume since the part-bodies are supported on the outer wall, preferably by a flange.
If, for example, the abovementioned openings in the outer walls are not available, the part-bodies can be provided with a projecting flange and arranged so as to be clamped between the two casing parts.
The part-bodies are preferably of rotationally symmetrical design relative to the longitudinal direction of the casing, this being advantageous in terms of costs and flow.
The one- or multi-part displacement bodies can be connected to the casing parts by friction welding, this being advantageous in terms of costs.
The present invention will now be further described, by way of example, with reference to the accompanying drawings, in which: Fig. 1 shows a plan view of a first embodiment of the present invention, Fig. 2 shows a side view in accordance with Fig.
1, Fig. 3 shows a displacement body, forming part of the embodiment of the present invention shown in Figs.
1 and 2; Fig. 4 shows a plan view, comparable to Fig. 1, of a second embodiment of the present invention; Fig. 5 shows a side view of the embodiment shown in Fig. 4, Fig. 6 shows a view in the direction of arrow X in Fig. 4 of a displacement body; and Fig. 7 shows a plan view of the displacement body shown in Fig. 6.
An air intake system of an internal combustion engine (now shown) constructed according to the present invention and shown in Figs. 1 to 3 of the accompanying drawings, essentially comprises a casing 2 which is provided with an air inlet 1 used for the supply of fresh air and is formed by two casing parts 3,4. In this construction, the casing 2 has a top part 3 and a bottom part 4 adjoining one another in a common parting plane T-T.
Arranged within the casing 2 are intake pipes 5 which connect the air inlet 1 to inlet ports (not shown) of the internal combustion engine.
A manifold volume surrounded by the casing parts 3 and 4 is furthermore formed in the casing 2, and arranged in this manifold volume is a displacement body 6, which has a dead volume V which is closed off relative to this manifold volume.
The displacement body 6 is arranged to project into the manifold volume in such a way that air flows around its surface on all sides1 the dead volume V extending on both sides of the parting plane T-T.
As can clearly be seen from Fig. 1 and 4, the air intake system shown is an embodiment for a fourcylinder in-line internal combustion engine with a total of four intake pipes 5 and an air inlet 1 located approximately centrally in the manifold volume, between a second and a third intake pipe 5. The displacement body 6 is formed by two part-bodies 7 which are arranged along a longitudinal direction L of the casing 2 without touching one another.
In the first embodiment of the present invention in accordance with Fig. 1 to 3, the part-bodies 7 are of cup-shaped design and have an encircling flange 9 at one end 8.
The casing 2 has openings 11 in end walls 10 lying transversely to the longitudinal direction L, the openings 11 receiving the part-bodies 7.
The casing top part 3 and the casing bottom part 4 are each manufactured from plastic and are connected to one another along the parting plane T-T by friction welding. Into each of the openings 11 which are formed when said parts are connected to each other, is inserted a part-body 7 until the flange 9 of the latter comes to rest on a corresponding flange surrounding the opening 11. The flange 9 is then likewise connected to the walls 10 by friction welding.
In a second embodiment of the present invention in accordance with Figs. 4 to 7, the part-bodies 7 have a flange 12 projecting on one side, by means of which they are first of all connected to one of the casing parts 3 or 4 along a wall 10 by friction welding. The other casing part 4 or 3 is then mounted along the parting plane T-T by friction welding.
For favourable flow conditions and simplicity of manufacture, all the part-bodies 7 are of rotationally symmetrical design with respect to the longitudinal direction L.
The present invention is not however limited to the exemplary embodiments described hereabove. It can be applied with equal advantage to, for example, tworow internal combustion engines. Moreover, the displacement body can be formed by one or, alternatively, by more than two part-bodies depending on the geometrical conditions and the size of the manifold volume. The displacement body can likewise be mounted at different points or in a different way in the manifold volume.
In all cases, the present invention can be used for a series of internal combustion engines of the same type which can use identical casings 2 for different swept volumes, for example, the dead volume V of the displacement body 6 increasing as the swept volume decreases to give aerodynamic adaptation, the manifold volume remaining constant.

Claims (11)

1. An air intake system for an internal combustion engine, comprising a casing which is provided with an air inlet and in which is formed a manifold volume that connects the air inlet to inlet ports of the internal combustion engine by means of intake pipes arranged in the casing, the casing being formed essentially by two casing parts which adjoin one another in a common parting plane, and a displacement body arranged in the manifold volume, being designed as a dead volume closed off relative to the manifold volume.
2. An air intake system as claimed in claim 1, in which the dead volume extends on both sides of the parting plane.
3. An air intake system as claimed in claim 2, in which the displacement body is arranged in such a way in the manifold volume that air flows around its surface on all sides.
4. An air intake system for a multi-cylinder internal combustion engine with at least one row of cylinders as claimed in any one of claims 1 to 3, in which the displacement body is formed by a plurality of part-bodies which are arranged along a longitudinal direction of the casing without touching one another.
5. An air intake system as claimed in claim 4, in which the casing has openings to receive the part bodies in walls lying transversely to the said longitudinal direction.
6. An air intake system as claimed in claim 5, in which the part-bodies are of cup-shaped design and have at one end an encircling flange designed to rest on the edge region defining said opening.
7. An air intake system as claimed in claim 4, in which the part-bodies have a projecting flange which is clamped between the casing parts in the parting plane.
8. An air intake system as claimed in claim 7, in which the flange projects on one side and is clamped between walls lying transversely to the said longitudinal direction.
9. An air intake system as claimed in claim 6 or 8, in which the part-bodies are of rotationally symmetrical design with respect to the said longitudinal direction.
10. An air intake system as claimed in any one of the preceding claims 1 to 9 for a series of internal combustion engines of the same type with at least a different swept volume, the dead volume increasing as the swept volume decreases while the same casing and the same manifold volume are retained.
11. An air intake system for an internal combustion engine constructed and arranged substantially as hereinbefore described with reference to and as illustrated in the accompanying drawings.
GB9606115A 1995-03-25 1996-03-22 An air intake system for an internal combustion engine Expired - Fee Related GB2299375B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19510961 1995-03-25

Publications (3)

Publication Number Publication Date
GB9606115D0 GB9606115D0 (en) 1996-05-22
GB2299375A true GB2299375A (en) 1996-10-02
GB2299375B GB2299375B (en) 1998-09-30

Family

ID=7757723

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9606115A Expired - Fee Related GB2299375B (en) 1995-03-25 1996-03-22 An air intake system for an internal combustion engine

Country Status (3)

Country Link
DE (1) DE19609305A1 (en)
FR (1) FR2732076B1 (en)
GB (1) GB2299375B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1264982A1 (en) * 2001-06-04 2002-12-11 Keihin Corporation Intake manifold
US7886713B2 (en) 2007-05-02 2011-02-15 Mann + Hummel Gmbh Lower intake manifold with charge motion control valve

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19944855A1 (en) * 1999-09-18 2001-03-22 Mann & Hummel Filter Intake device for an internal combustion engine
JP3585818B2 (en) * 2000-09-12 2004-11-04 本田技研工業株式会社 Intake manifold

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4440120A (en) * 1982-05-24 1984-04-03 General Motors Corporation Compact ram tube engine air intake manifold
GB2205609A (en) * 1987-06-08 1988-12-14 Aston Martin Tickford Variable geometry i c engine air intake system
EP0613999A1 (en) * 1993-03-05 1994-09-07 Pierburg Gmbh Air inlet conduit system for internal combustion engines

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59131724A (en) * 1983-01-19 1984-07-28 Nippon Denso Co Ltd Variable volume surge tank
US5005532A (en) * 1989-02-22 1991-04-09 Siemens-Bendix Automotive Electronics Limited Integrated tuned induction system
JPH05332142A (en) * 1992-05-30 1993-12-14 Suzuki Motor Corp Intake device of v type engine

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4440120A (en) * 1982-05-24 1984-04-03 General Motors Corporation Compact ram tube engine air intake manifold
GB2205609A (en) * 1987-06-08 1988-12-14 Aston Martin Tickford Variable geometry i c engine air intake system
EP0613999A1 (en) * 1993-03-05 1994-09-07 Pierburg Gmbh Air inlet conduit system for internal combustion engines

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1264982A1 (en) * 2001-06-04 2002-12-11 Keihin Corporation Intake manifold
US7886713B2 (en) 2007-05-02 2011-02-15 Mann + Hummel Gmbh Lower intake manifold with charge motion control valve

Also Published As

Publication number Publication date
DE19609305A1 (en) 1996-09-26
GB2299375B (en) 1998-09-30
GB9606115D0 (en) 1996-05-22
FR2732076B1 (en) 1998-08-21
FR2732076A1 (en) 1996-09-27

Similar Documents

Publication Publication Date Title
EP0384359B1 (en) Intergrated tuned induction system
DE69505763T2 (en) Intake pipe with swivel flaps for an internal combustion engine
US4341186A (en) Air intake system for a multi-cylinder internal combustion engine
GB2299375A (en) I.c.engine air intake manifold
US6318326B1 (en) Vacuum device for combustion air supply of an internal combustion engine
US4989553A (en) Air intake device of engine
US5476077A (en) Thermostat-mounting position structure
GB2153430A (en) A fresh-gas induction system for a supercharged engine
JP2003193919A (en) Intake device for inclined engine
US7392778B2 (en) Internal combustion engine intake device
EP0939211B1 (en) Inertia charge intake manifold for multi-cylinder internal combustion engine
JPH10220331A (en) Structure of individual ignition coil for multicylinder internal combustion engine
US7533644B2 (en) Air induction module for a combustion engine having pulse charging
JPS6329153Y2 (en)
US4487170A (en) Carburetor device for V-type internal combustion engines
JPS58162724A (en) Surge tank for internal-combustion engine
JP2000227057A (en) Intake device of engine
US20210123399A1 (en) Fluid pipe arrangement
JP2951071B2 (en) Two-cycle multi-cylinder engine
JPH02241965A (en) Intake device for v type engine
JPS6114574Y2 (en)
JPH0727374Y2 (en) Intake device for V-type 8-cylinder internal combustion engine
JPS6062654A (en) Intake device of v-type engine
JPH0643462Y2 (en) Engine intake system
JPH057492Y2 (en)

Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20030322