GB2239898A - I.c. engine induction system - Google Patents

I.c. engine induction system Download PDF

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Publication number
GB2239898A
GB2239898A GB9000562A GB9000562A GB2239898A GB 2239898 A GB2239898 A GB 2239898A GB 9000562 A GB9000562 A GB 9000562A GB 9000562 A GB9000562 A GB 9000562A GB 2239898 A GB2239898 A GB 2239898A
Authority
GB
United Kingdom
Prior art keywords
induction system
throttle body
air cleaner
manifold
section
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
GB9000562A
Other versions
GB9000562D0 (en
GB2239898B (en
Inventor
Thomas Graham Parr
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.)
MG Rover Group Ltd
Original Assignee
MG Rover Group 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 MG Rover Group Ltd filed Critical MG Rover Group Ltd
Priority to GB9000562A priority Critical patent/GB2239898B/en
Publication of GB9000562D0 publication Critical patent/GB9000562D0/en
Publication of GB2239898A publication Critical patent/GB2239898A/en
Application granted granted Critical
Publication of GB2239898B publication Critical patent/GB2239898B/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
    • F02M35/104—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
    • 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
    • F02M35/10013—Means upstream of the air filter; Connection to the ambient air
    • 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
    • F02M35/10032—Plenum chambers specially shaped or arranged connecting duct between carburettor or air inlet duct and the plenum chamber; specially positioned carburettors or throttle bodies with respect to the plenum chamber
    • 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
    • F02M35/10091—Air intakes; Induction systems characterised by details of intake ducts: shapes; connections; arrangements
    • F02M35/10131—Ducts situated in more than one plane; Ducts of one plane crossing ducts of another plane
    • 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
    • F02M35/10288—Air intakes combined with another engine part, e.g. cylinder head cover or being cast in one piece with the exhaust manifold, cylinder head or engine block
    • 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
    • F02M35/02—Air cleaners
    • 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
    • F02M35/10137—Flexible ducts, e.g. bellows or hoses
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)

Abstract

The manifold section 34 and the throttle body section 35 are formed integrally of plastics to provide an inlet duct 33. An air cleaner housing 38 may be formed as a one piece plastics unit with an intermediate duct 39 and air entry duct 40. The throttle body section (59 Fig. 4) may be arranged in use below a manifold chamber (58) with U-shaped outlet branches (54). <IMAGE>

Description

INDUCTION SYSTEM FOR AN INTERNAL COMBUSTION ENGINE The invention relates to an induction system for an internal combustion engine.
With internal combustion engines, it has been commonplace for many years to use an induction system comprising a large number of separate components.
Typically, the components comprise an inlet manifold, a throttle body, an intermediate duct, an air cleaner and an entry duct for the air cleaner. Each of the components must be sealingly attached to its neighbouring component. Fig.l of the accompanying drawings is a diagrammatic example of such a system.
In Fig.1, a cylinder head 12 has attached thereto a flange 11 of an inlet manifold 10. The upstream end of the inlet manifold 10 is provided with a flange 14 attached adjacent to a flange 15 at one end of a throttle body 13. The throttle body 13 is provided with a further flange 19 attached to a flange 20 at one end of an intermediate flexible duct 16. The intermediate duct 16 is provided with a flange 21 at its other end attached to a flange 22 at one end of an air cleaner 17, the latter having a further flange 23 at the upstream end thereof. The flange 23 is attached to a flange 24 of an entry duct 18.
One disadvantage of having such a large number of attachments is that there is great potential for leakage of air at the flanges with detrimental effects in engine performance and drivability. Another disadvantage of the Fig.1 system is that a large number of separate components requires a lengthy assembly procedure.
An object of the present invention is to reduce the disadvantages described above.
According to one aspect of the present invention there is provided an induction system for an internal combustion engine including an inlet manifold section and a throttle body section, the manifold section and the throttle body section being formed integrally, at least in part, to provide an inlet duct.
Such an arrangement greatly facilitates the manufacture and fitting of the induction system.
Preferably, the manifold section and the throttle body section are formed integrally as a one piece inlet duct. This overcomes any possible problem of leakage between the two sections.
The throttle body section may be attachable to an air cleaner housing.
Conveniently the air cleaner housing may be formed integrally, at least in part, with an intermediate duct by which the air cleaner housing is attached to the throttle body. Preferably, the. housing and the intermediate duct are formed integrally as a one piece unit. This prevents any possibility of leakage between the air cleaner housing and intermediate duct, and again facilitates the construction and assembly of those components.
Preferably, the air cleaner housing is integral at least in part with an air entry duct for the housing.
This prevents leakage of air between the said air entry duct and the air cleaner.
Preferably, the manifold section defines a plurality of intake passages associated with respective cylinders of the engine, the intake passages being arranged to receive air which has passed through the throttle body.
Preferably, the intake passages extend from a chamber in the manifold section for receiving air which has passed through the throttle body. Conveniently, the passages are defined by respective branches of the manifold section which may be substantially U-shaped.
Advantageously, an end of one limb of each U-shaped branch may extend into the chamber with the other limb extending beneath the chamber so that its end can be attached to a cylinder head of the engine. This arrangement provides a particularly compact manifold/throttle body unit.
Conveniently, the said other arms may be arranged side by side as a row with the chamber preferably arranged mid-way between the ends of the row. If desired the air cleaner may lie beneath the row of arms, e.g., midway between the ends of the row.
Preferably, the throttle body houses an adjustable throttle valve.
Another problem which arises with the Fig.1 induction system is the effect of under bonnet temperatures on different materials from which the components are made.
Whilst the materials are selected to withstand high under bonnet temperatures, differential expansion of the materials can increase further the likelihood of leakage between them.
With the present invention it is possible to avoid that problem by forming components integrally. For example, the manifold and throttle body may be formed by moulding plastics and the air cleaner and the intermediate duct may also be formed by that method using the same plastics material. The use of plastics greatly facilitates the construction of such integral units.
An induction system in accordance with the invention will now be described by way of example with reference to the remaining accompanying drawings in which: Fig.2 is a diagrammatic elevation of one form of induction system in accordance with the invention connected to a cylinder head Fig.3 is a plan view of another form of induction system in accordance with the invention connection to a cylinder head, and Fig.4 is a cross section through part of the embodiment shown in Fig.3 on the line IV - IV in Fig.3.
In Fig.2, a cylinder head 30 has attached thereto a flange 32 at one end of an inlet duct 33. The inlet duct 33 comprises an inlet manifold section 34 formed integrally with a throttle body 35. The throttle body will, in use, include a throttle valve 31.
The upstream end of the inlet duct 33 is formed with a flange 36. The flange 36 is attached to a flange 37 at one end of a one-piece air cleaner housing 38. The housing 38 includes a flexible integral intermediate duct 39 having a flange 37 thereon, and an integral air entry duct 40 through which air is drawn into the induction system. The housing 38 contains an air filter element 42.
With an arrangement as shown in Fig.2 self assembly of the induction system is particularly straightforward as there are only two connections to be made i.e. the connection between the inlet duct 33 and the cylinder head 30 and the connection between the flanges 36, 37.
Ideally, the interconnection between the flanges 36, 37 is made prior to assembly of the induction system onto the engine enabling the system to be tested prior to such assembly.
In Figs.3 and 4, an inlet duct 50 is illustrated comprising a manifold section 52 formed integrally with a throttle body 59. The manifold section 52 includes four U-shaped branches 54 having a common elongate flange 55 integral with the left-hand ends thereof as viewed in the drawing. The flange 55 provides means for attaching the duct 50 to a cylinder head 56 and includes injector mounting ports 55a.
Each branch 54 is substantially U-shaped and includes a lower limb 54a formed integral with the flange 55, and a shorter upper limb 54b integral with a central section 57 defining a chamber 58. The branches define intake passages 51.
The limbs 54a are arranged side-by-side as a row and extend beneath the chamber 58 towards the cylinder head 56. The chamber 58 is arranged midway between the ends of the row.
The one-piece duct 50 is formed integrally with a throttle body 59. The throttle body 59 is positioned beneath the chamber 58 such that air flows directly from the throttle body up into the chamber 58. From the chamber 58, the air flows in substantially equal proportions along each of the intake passages 51. The throttle body will, in use, include a throttle valve 59a.
An air cleaner housing 60 will normally be attached to the throttle body 59. As in Fig.2, the air cleaner housing 60 includes an integral intermediate duct 62 and houses a filter element 63. The intermediate duct passes upwardly between the central pair of limbs 54a for attachment to the throttle body 59.
The arrangement shown in Figs.3 and 4 is particularly easy to assemble onto the vehicle as, again, the only attachments involve mounting the manifold onto the cylinder head and interconnecting the throttle body and filter housing. As in Fig.2, the interconnection between the throttle body and the filter housing can be made off the vehicle and tested prior to assembly.

Claims (20)

1. An induction system for an internal combustion engine including an inlet manifold section and a throttle body section, the manifold section and the throttle body section being formed integrally at least in part to provide an inlet duct.
2. An induction system according to Claim 1 in which the manifold section and the throttle body section are formed integrally as a one piece inlet duct.
3. An induction system according to Claim 1 or 2 in which the throttle body section is attachable to an air cleaner housing.
4. An induction system according to Claim 3 in which the air cleaner is formed integrally with an intermediate duct at least in part by means of which the air cleaner housing is attachable to the throttle body.
5. An induction system according to Claim 4 in which the housing and intermediate duct are formed integrally as a one piece unit.
6. An induction system according to any of Claims 3 to 5 in which the air cleaner housing is integral with a member defining an air inlet for the housing.
7. An induction system according to any preceding Claim and where the intermediate duct is provided, in which the intermediate duct is flexible.
8. An induction system according to any preceding Claim in which the manifold defines a plurality of intake passages associated with cylinders in the engine, the intake passages being arranged to receive air which has passed through the throttle body.
9. An induction system according to Claim 8 in which the intake passages extend from a chamber in the manifold section for receiving air which has passed through the throttle body.
10. An induction system according to Claim 9 in which the throttle body lies beneath the chamber.
11. An induction system according to Claim 8, 9 or 10 in which the passages are formed in respective branches of the manifold.
12. An induction system according to Claim 11 in which the branches are substantially U-shaped.
13. An induction system according to Claim 12 when appendant to Claim 12 in which one limb of each Ushaped branch extends into the chamber and the other limb extends beneath the chamber for attachment to a cylinder head of the engine.
14. An induction system according to Claim 13 in which the said other limbs are arranged side by side as a row with the chamber arranged midway between ends of the row.
15. An induction system according to Claim 14 in which the air cleaner lies beneath said row of limbs.
16. An induction system according to any preceding Claim in which the throttle body houses an adjustable throttle valve.
17. An induction system according to any preceding Claim in which the manifold section includes a flange to facilitate attachment to a cylinder head of the engine.
18. An induction system according to any preceding Claim in which the manifold section and throttle body are formed by moulding plastics.
19. An induction system according to any preceding Claim and where the air cleaner housing and intermediate duct are provided, in which the air cleaner and intermediate duct are formed by moulding plastics.
20. An induction system constructed and arranged substantially as described herein with reference to Fig.2 or Figs.3 and 4 of the accompanying drawings.
GB9000562A 1990-01-10 1990-01-10 Induction system for an internal combustion engine Expired - Fee Related GB2239898B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9000562A GB2239898B (en) 1990-01-10 1990-01-10 Induction system for an internal combustion engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9000562A GB2239898B (en) 1990-01-10 1990-01-10 Induction system for an internal combustion engine

Publications (3)

Publication Number Publication Date
GB9000562D0 GB9000562D0 (en) 1990-03-14
GB2239898A true GB2239898A (en) 1991-07-17
GB2239898B GB2239898B (en) 1994-05-18

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Family Applications (1)

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Country Status (1)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0571663A1 (en) * 1992-05-23 1993-12-01 Firma Carl Freudenberg Intake conduit for an internal combustion engine
WO1999061776A1 (en) * 1998-05-26 1999-12-02 Siemens Aktiengesellschaft Suction device for an internal combustion engine
FR2807108A1 (en) * 2000-04-04 2001-10-05 Magneti Marelli France INJURY AIR INTAKE MANIFOLD FOR INNER COMBUSTION ENGINE
US6564766B2 (en) * 2001-07-27 2003-05-20 W. Brooke Ayton Air induction system for an automobile
EP1757798A1 (en) * 2005-08-22 2007-02-28 Mann+Hummel Gmbh Filter pipe line

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1195060A (en) * 1966-10-05 1970-06-17 Vergaser Ges M B H & Co K G De Improvements in Induction Systems for Internal Combustion Engines.
GB1229914A (en) * 1967-09-04 1971-04-28
GB1474384A (en) * 1974-09-02 1977-05-25 Lucas Electrical Ltd Inlet manifolds for internal combustion engines
GB2067242A (en) * 1980-01-10 1981-07-22 Ustav Pro Vyzkum Motorovych Vo Mixture preparation for pre- combustion chamber i.c. engines
GB2132692A (en) * 1982-12-24 1984-07-11 Ford Motor Co Intake manifold for an internal combustion engine
US4545331A (en) * 1983-06-15 1985-10-08 Nissan Motor Co., Ltd. Auxiliary air supply apparatus for an internal combustion engine
EP0294083A2 (en) * 1987-06-01 1988-12-07 Ford Motor Company Limited Compact integrated engine induction air/fuel system
EP0314074A1 (en) * 1987-10-30 1989-05-03 WEBER S.r.l. Device for forming and metering a mixture of air and fuel in an internal combustion engine

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1195060A (en) * 1966-10-05 1970-06-17 Vergaser Ges M B H & Co K G De Improvements in Induction Systems for Internal Combustion Engines.
GB1229914A (en) * 1967-09-04 1971-04-28
GB1474384A (en) * 1974-09-02 1977-05-25 Lucas Electrical Ltd Inlet manifolds for internal combustion engines
GB2067242A (en) * 1980-01-10 1981-07-22 Ustav Pro Vyzkum Motorovych Vo Mixture preparation for pre- combustion chamber i.c. engines
GB2132692A (en) * 1982-12-24 1984-07-11 Ford Motor Co Intake manifold for an internal combustion engine
US4545331A (en) * 1983-06-15 1985-10-08 Nissan Motor Co., Ltd. Auxiliary air supply apparatus for an internal combustion engine
EP0294083A2 (en) * 1987-06-01 1988-12-07 Ford Motor Company Limited Compact integrated engine induction air/fuel system
EP0314074A1 (en) * 1987-10-30 1989-05-03 WEBER S.r.l. Device for forming and metering a mixture of air and fuel in an internal combustion engine

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0571663A1 (en) * 1992-05-23 1993-12-01 Firma Carl Freudenberg Intake conduit for an internal combustion engine
WO1999061776A1 (en) * 1998-05-26 1999-12-02 Siemens Aktiengesellschaft Suction device for an internal combustion engine
FR2807108A1 (en) * 2000-04-04 2001-10-05 Magneti Marelli France INJURY AIR INTAKE MANIFOLD FOR INNER COMBUSTION ENGINE
WO2001075295A1 (en) * 2000-04-04 2001-10-11 Magneti Marelli France Air intake manifold with sudden enlargement for internal combustion engine
US6691662B2 (en) 2000-04-04 2004-02-17 Magneti Marelli France Air intake manifold with sudden enlargement for internal combustion engine
US6564766B2 (en) * 2001-07-27 2003-05-20 W. Brooke Ayton Air induction system for an automobile
EP1757798A1 (en) * 2005-08-22 2007-02-28 Mann+Hummel Gmbh Filter pipe line

Also Published As

Publication number Publication date
GB9000562D0 (en) 1990-03-14
GB2239898B (en) 1994-05-18

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

Effective date: 19940818