GB2428081A - Flap valve mechanism for i.c. engine intake manifolds - Google Patents

Flap valve mechanism for i.c. engine intake manifolds Download PDF

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Publication number
GB2428081A
GB2428081A GB0602540A GB0602540A GB2428081A GB 2428081 A GB2428081 A GB 2428081A GB 0602540 A GB0602540 A GB 0602540A GB 0602540 A GB0602540 A GB 0602540A GB 2428081 A GB2428081 A GB 2428081A
Authority
GB
United Kingdom
Prior art keywords
flap
compensation element
shaft
compensation
mechanism according
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
GB0602540A
Other versions
GB0602540D0 (en
GB2428081B (en
Inventor
Peter Fischer
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.)
Siemens AG
Original Assignee
Siemens 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 Siemens AG filed Critical Siemens AG
Publication of GB0602540D0 publication Critical patent/GB0602540D0/en
Publication of GB2428081A publication Critical patent/GB2428081A/en
Application granted granted Critical
Publication of GB2428081B publication Critical patent/GB2428081B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/16—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members
    • F16K1/18—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps
    • F16K1/22—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps with axis of rotation crossing the valve member, e.g. butterfly valves
    • F16K1/226—Shaping or arrangements of the sealing
    • 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
    • F02B27/02—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 the systems having variable, i.e. adjustable, cross-sectional areas, chambers of variable volume, or like variable means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D9/00—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits
    • F02D9/08—Throttle valves specially adapted therefor; Arrangements of such valves in conduits
    • F02D9/10—Throttle valves specially adapted therefor; Arrangements of such valves in conduits having pivotally-mounted flaps
    • F02D9/1005—Details of the flap
    • F02D9/101—Special flap shapes, ribs, bores or the like
    • F02D9/1015—Details of the edge of the flap, e.g. for lowering flow noise or improving flow sealing in closed flap position
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/16—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members
    • F16K1/18—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps
    • F16K1/22—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps with axis of rotation crossing the valve member, e.g. butterfly valves
    • F16K1/226—Shaping or arrangements of the sealing
    • F16K1/2261—Shaping or arrangements of the sealing the sealing being arranged on the valve member
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/16—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members
    • F16K1/18—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps
    • F16K1/22—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps with axis of rotation crossing the valve member, e.g. butterfly valves
    • F16K1/226—Shaping or arrangements of the sealing
    • F16K1/228—Movable sealing bodies

Abstract

The invention relates to a flap mechanism for intake manifolds and its production, in particular in internal combustion engines, with the flap mechanism having a shaft 2 and at least one flap 3, 4, which is non-rotatably connected to the shaft 2. A compensation or adjustment element 9 is disposed around the flap 2, 3 and can be displaced in relation to the flap 3, 4, with at least one spring element 14 being disposed between the compensation element 9 and the flap 3, 4. The compensation element 9 may be U-shaped and may have a latching element 10a, 10b at each end which engages, with play, a complementary locking element 8a, 8b in the flap such that the two limbs of the U-shape clip around the edges of the flap 3,4. The flaps 3,4 and shaft 2 may be cast together; a stiffening metal shaft may be incorporated or inserted later.

Description

1 2428081
FLAP MECHANISM FOR INTAKE MANIFOLDS AND ITS PRODUCTION
The invention relates to a flap mechanism for intake manifolds, in particular in internal combustion engines. The invention also relates to the production of such a flap mechanism.
As far as flap or cut-off mechanisms in air distributors in internal combustion engines are concerned, in future more stringent exhaust gas legislation will require smaller and smaller gap dimensions or increasingly effective sealing between the flaps and the manifold channels. This makes it increasingly problematic to design component tolerances, in particular in view of thermal expansion of the components. The air distributors are made largely of thermoplastic synthetic material, while the flaps are attached to metal shafts. The flaps themselves are also made of thermoplastic synthetic material.
To resolve this problem until now flaps made of a synthetic material have been pushed onto a metal shaft and can be displaced axially on said shaft to prevent the flaps becoming jammed in the manifold channels due to thermal expansion. This structure however has the disadvantage that only thermal expansion can be compensated for. Also gap dimensions required for production purposes must be complied with. As the flap can be displaced axially on the metal shaft -also supported in a floating manner - relative movement can occur between the flap and the metal shaft, which can result in increased wear at the flaps.
It is therefore desirable to propose a flap mechanism and its production, with said flap mechanism having a minimal gap dimension between the flap and the manifold channel.
The invention is defined in the independent claims, to which reference should now be made. Advantageous embodiments are set out in the sub claims.
According to invention embodiments, the flap mechanism for intake manifolds comprises a shaft and at least one flap, connected to said shaft such that it cannot be rotated. A compensation element is arranged around the flap and can be displaced in relation to said flap. At least one spring element is arranged between the compensation element and the flap; it can form part of the compensation element and/or flap or be provided separately.
The compensation elements is pressed against the manifold wall by the spring element, such that when the flap is in the closed position, there is hardly any gap (dimension) between the compensation element and the wall of the manifold. As the compensation element is supported in a sprung manner, it can absorb thermal expansion without the flap becoming wedged in the manifold.
The compensation element is preferably fixed to the flap and/or shaft in such a manner as to prevent loss. This has the advantage that the compensation element on the one hand during assembly and on the other hand when the flap is fitted on prevents the compensation element dropping from the flap.
The compensation element preferably has at least one latching element, which engages with a latching element with a complementary shape, both latching elements having some clearance in respect of each other (play) in the assembled state. The complementary shaped latching element can be formed on the one hand on the flap or on the other hand on the shaft.
This structure allows simple assembly of the compensation element on the flap.
The latching elements of the compensation element are preferably disposed at the free ends. This makes the compensation element as flexible as possible and provides the greatest possible clearance, such that major tolerances and temperature fluctuations can be compensated for.
The compensation element is preferably elongated, with two free ends, and can be U-shaped and clip around the edges of the flap in the integrated state (when mounted) . This means that the compensation element is disposed along the entire periphery of the flap. The periphery of the flap preferably comprises a guide for the compensation element. This guide prevents the compensation element from slipping perpendicular to the surface of the flap.
The spring element is preferably formed on the guide on the flap and/or on the inner edge of the compensation element (in one example, two springs may be provided, one on the compensation element and the other one on the flap) . This embodiment means there is no need for an additional component, as the spring effect is either provided by the flap or by the compensation element.
Further advantageous embodiments of the invention are set out in the remaining dependent claims.
The invention is described in more detail below by way of an example with reference to the schematic figures, in which: Figure 1 shows a top view of a claimed flap mechanism; Figures 2A and B show a section along the line Il-Il in Figure 1; Figure 3 shows a partial section of a compensation element and a flap, with a spring element serving as the guide; Figure 4 shows a section along the line IV-IV in Figure 3 and Figure 5 shows a partial section according to V in Figure 1, illustrating a further embodiment of a latching element.
Figure 1 shows a top view of a claimed flap mechanism 1, having a cylindrical hollow shaft 2 and two essentially rectangular flaps 3 and 4 formed thereon. The two flaps are formed diametrically opposite each other on the hollow shaft 2 perpendicular to the axis of rotation 5, with the two flaps 3 and 4 disposed in a single plane. A guide 7 is provided along the periphery 6 of the flap 3 or 4. This guide can be configured for example as a groove or a lug. A complementary shaped latching element 8 can be provided in this guide 7 - configured here as a groove. In the exemplary embodiment shown in Figure 1 a complementary shaped locking element 8a or b - in this instance in the shape of a recess - is provided on both the right and left sides of the guide 7 in proximity to the hollow shaft 2.
In contrast to the lower flap 4, the upper flap 3 has a compensation element 9. The compensation element is essentially U-shaped and has a locking element lOa and b at each of its ends. It is important that the compensation element 9 is tailored to the contour of the flap 3. In the exemplary embodiment shown here the locking element 10 is an inward facing latching lug. The two latching lugs lOa and b engage in the recesses Ba and 8b of the flap 3. This ensures that the compensation element 9 is secured so that it does not drop down.
Figures 2A and 2B show a section along the line Il-Il in Figure 1. Different embodiments of the compensation element 9 are shown. An intermediate space 13 is provided between the inner edge 11 of the compensation element 9 and the outer edge 12 of the groove 7 to hold a spring element 14. The intermediate space 13 means that the compensation element 9 is disposed such that it can be displaced both in the x direction (Fig. 1), i.e. in the direction of the arrow 15, and in the y direction (Fig. 1), i.e. in the direction of the arrow 16, in relation to the flap 3. The spring element 14 present in the intermediate space 13 tensions the compensation element 9.
In Figure 2A the compensation element 9 has an essentially rectangular cross-section. In contrast to this the compensation element 9' in Figure 2B has an essentially T- shaped cross-section. The height h of the compensation element 9' is thereby preferably selected such that it is the same as the thickness D of the flap 3. This has the advantage that the compensation element 9' lies flush with the flap 3.
In contrast to this, the compensation element 9 in Figure 2A has a uniform width b, which is selected such that the compensation element can be inserted into the groove 7.
It should be noted that in Figure 2B the flap 3 has a groove 7 as the guide and the compensation element 9' has a spring 17 that engages in the groove 7. It is also possible to provide another mechanism. For example, the compensation element 9' may have a groove and the flap may have a spring engaging in the groove of the compensation element 9' Figure 3 shows a top view of a partial section of a compensation element 9'' and the flap 3. Figure 4 shows a section along the line IV-IV in Figure 3. In this exemplary embodiment both the compensation element 9'' and the flap 3 have a groove 7 and 18. An undulating spring element 14' is inserted in both these grooves, providing both the guide and spring functions. It should be noted here that the shape of the spring element 14' is secondary. Different shapes are possible, as long as the spring element 14' has a certain rigidity (sufficient for guiding) and can be braced against the respective edges 12 and 12' of the grooves 7 and 18.
Figure 5 shows a partial section of the hollow shaft 2 of a further embodiment of a compensation element 9''' and the flap 3. This corresponds roughly to the section V in Figure 1, where a different embodiment of the compensation element is shown, as mentioned above. In this Figure 5 the hollow shaft is shown in cross-section. The essential difference compared with the embodiment in Figure 1 is that the complementary shaped locking element 8' is no longer formed in the flap 3 but in the hollow shaft 2. The compensation element 9''' is somewhat longer than the compensation element 9 and has an outward facing latching lug 19 at its end. This outward facing latching lug 19 engages in the recess 20 in the hollow shaft 2. The embodiment shown in Figure 5 is more efficiently sealed than the embodiment shown in Figure 1, as the gap 21 between the compensation element 9 and the hollow shaft 2 is in principle no longer present.
The shaft is cast together with flaps to produce such a flap mechanism. For stiffening purposes and for better torque transmission a metal shaft can be inserted into the hollow space 22 in the hollow shaft 2. The compensation element is cast separately from the shaft and flap. The compensation element is pushed onto the flap next according to the required embodiment. In the embodiment of the spring element 14' shown in Figure 3 (with a separate spring), said spring element 14' is for example inserted subsequently through the opening 23 in the compensation element 9'' . These openings 23 are preferably let in as an extension of the intermediate spaces 13 in the compensation elements. Later assembly of the spring elements 14' (if they are not forced together with the compensation element or flap) facilitates the positioning of the compensation element.
The hollow shaft 2 can preferably be cast directly onto a metal shaft. This eliminates one method step.
The claimed flap mechanism can be produced quickly and easily and in the closed state it is sealed and essentially has a gap dimension of zero.

Claims (16)

1. Flap mechanism for intake manifolds having a shaft; at least one flap, which is connected to the shaft such that it cannot be rotated and a compensation element disposed around the flap, which can be displaced in relation to the flap, with at least one spring element being provided between the compensation element and the flap.
2. Flap mechanism according to claim 1, in which the compensation element is fixed to the flap and/or to the shaft in such a manner as to prevent loss.
3. Flap mechanism according to claim 2, in which the compensation element has at least one latching element, which engages with a complementary shaped locking element, with these two latching elements having play between them when assembled.
4. Flap mechanism according to any of the preceding claims, in which the latching element of the compensation element is disposed at at least one of its free ends and the complementary shaped latching element is disposed in proximity to the shaft on the flap and/or on the shaft.
5. Flap mechanism according to any of the preceding claims, in which the compensation element is U-shaped.
6. Flap mechanism according to claim 5, wherein the two arms of the Ushaped compensation element clip around the edges of the flap in the mounted state.
7. Flap mechanism according to claim 6, wherein the two arms of the Ushaped compensation element clip around the surfaces of the flaps in the mounted state.
8. Flap mechanism according to any of the preceding claims, wherein the periphery and/or at least one surface of the flaps has a guide for the compensation element or vice versa.
9. Flap mechanism according to any of the preceding claims, wherein the spring element is formed on the inner edge of the compensation element and/or on the outer edge of the flap.
10. Method for producing a flap mechanism according to any of the preceding claims, with the following steps: a) Production of the shaft together with at least one flap, b) Production of the compensation element, c) Positioning of the compensation element around the flap.
11. Method according to claim 10, wherein a hollow shaft is produced in step a), into which a metal shaft is subsequently inserted.
12. Method according to claim 10, wherein the shaft is cast onto a metal shaft in step a)
13. Method according to any of claims 10 to 12, in which at least one spring element is also formed on the periphery of the flap in step a)
14. Method according to any of claims 10 to 13, wherein at least one spring element is formed in step b) on the inner edge of the compensation element (facing the flap.
15. Method according to any of claims 10 to 14, wherein the compensation element is injection-molded in step b)
16. A method or a flap mechanism substantially according to one of the embodiments shown in the figures and/or set
out in the description.
GB0602540A 2005-07-07 2006-02-08 Flap Mechanism For Intake Manifolds And Its Production Expired - Fee Related GB2428081B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102005031899A DE102005031899B4 (en) 2005-07-07 2005-07-07 Flap device for intake pipes and its manufacture

Publications (3)

Publication Number Publication Date
GB0602540D0 GB0602540D0 (en) 2006-03-22
GB2428081A true GB2428081A (en) 2007-01-17
GB2428081B GB2428081B (en) 2010-04-07

Family

ID=36119723

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0602540A Expired - Fee Related GB2428081B (en) 2005-07-07 2006-02-08 Flap Mechanism For Intake Manifolds And Its Production

Country Status (2)

Country Link
DE (1) DE102005031899B4 (en)
GB (1) GB2428081B (en)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1317616A (en) * 1969-06-25 1973-05-23 Garrett Corp Butterfly valve
DE8002835U1 (en) * 1980-02-04 1980-06-04 Schrupp & Co Gmbh, 5240 Betzdorf THROTTLE VALVE FOR CHEMICAL AFFINE MEDIA
US4836163A (en) * 1986-12-22 1989-06-06 Vdo Adolf Schindling Ag Throttle-butterfly connector piece for an internal combustion engine
GB2214613A (en) * 1988-01-21 1989-09-06 Akira Oshima Seal mechanism for butterfly valve
EP1028238A2 (en) * 1999-02-10 2000-08-16 Eaton Corporation Low-leakage air valve for variable air intake system
WO2002004798A1 (en) * 2000-07-11 2002-01-17 Siemens Aktiengesellschaft Control valve
EP1484490A1 (en) * 2003-06-04 2004-12-08 Pierburg GmbH Throttle valve

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3514077A (en) * 1967-10-09 1970-05-26 Kazuo Kitazawa Butterfly valve
US3724812A (en) * 1971-11-17 1973-04-03 Fastener Corp Damper assembly
JPS6435180A (en) * 1987-07-30 1989-02-06 Akira Oshima Seal device in butterfly valve
US5326077A (en) * 1993-10-04 1994-07-05 General Electric Company Butterfly valve seal retainer
DE19516927A1 (en) * 1995-05-09 1996-11-14 Mann & Hummel Filter Throttle valve for controlling amt. of intake air in internal combustion engine
DE10327045A1 (en) * 2003-06-16 2005-04-07 Siemens Ag Throttle valve

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1317616A (en) * 1969-06-25 1973-05-23 Garrett Corp Butterfly valve
DE8002835U1 (en) * 1980-02-04 1980-06-04 Schrupp & Co Gmbh, 5240 Betzdorf THROTTLE VALVE FOR CHEMICAL AFFINE MEDIA
US4836163A (en) * 1986-12-22 1989-06-06 Vdo Adolf Schindling Ag Throttle-butterfly connector piece for an internal combustion engine
GB2214613A (en) * 1988-01-21 1989-09-06 Akira Oshima Seal mechanism for butterfly valve
EP1028238A2 (en) * 1999-02-10 2000-08-16 Eaton Corporation Low-leakage air valve for variable air intake system
WO2002004798A1 (en) * 2000-07-11 2002-01-17 Siemens Aktiengesellschaft Control valve
EP1484490A1 (en) * 2003-06-04 2004-12-08 Pierburg GmbH Throttle valve

Also Published As

Publication number Publication date
DE102005031899A1 (en) 2007-01-11
GB0602540D0 (en) 2006-03-22
DE102005031899B4 (en) 2009-07-09
GB2428081B (en) 2010-04-07

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PCNP Patent ceased through non-payment of renewal fee

Effective date: 20170208