AU2808999A - A valve body - Google Patents
A valve body Download PDFInfo
- Publication number
- AU2808999A AU2808999A AU28089/99A AU2808999A AU2808999A AU 2808999 A AU2808999 A AU 2808999A AU 28089/99 A AU28089/99 A AU 28089/99A AU 2808999 A AU2808999 A AU 2808999A AU 2808999 A AU2808999 A AU 2808999A
- Authority
- AU
- Australia
- Prior art keywords
- vane
- valve body
- wall
- bore
- edge
- 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
Links
Classifications
-
- 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
- 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
- F02D9/1035—Details of the valve housing
- F02D9/104—Shaping of the flow path in the vicinity of the flap, e.g. having inserts in the housing
-
- 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
- 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
- F05C2201/00—Metals
- F05C2201/02—Light metals
- F05C2201/021—Aluminium
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Lift Valve (AREA)
- Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)
Description
Regulation 3.2
AUSTRALIA
Patents Act 1990 COMPLETE SPECIFICATION FOR A STANDARD PATENT
(ORIGINAL)
*0*9
.E
9
C
a. 9 Name of Applicant: ROBERT BOSCH GmbH of Postfach 30 02 20, D-70442 Stuttgart, Germany Actual Inventor(s): Address for Service: Invention Title: DAVIES COLLISON CAVE, Patent Attorneys, of 1 Little Collins Street, Melbourne, Victoria 3000, Australia "A VALVE BODY" Details of Associated Provisional Application No: PP4292/98 The following statement is a full description of this invention, including the best method of performing it known to us: -1- P:\OPER\DBW\PP4292.98 12/5/99 -2- A VALVE BODY The present invention relates to a valve body, and is particularly useful for a throttle body with a butterfly valve.
Existing throttle bodies for fuel injection systems have an air intake bore which includes a butterfly valve. The butterfly valve regulates the air intake into the system. When the valve is closed, the vane of the valve has its edge adjacent the wall of the bore, to the extent that it virtually abuts the wall. There has always been a requirement that some air needs to be passed through the valve to the fuel injection system, when a vehicle is at rest, to enable S.o. the vehicle's engine to run idle. This requirement has become less and less over time, to the extent that the edge of the vane of the valve conforms closely to the diameter of the bore, which gives rise to the problem of the vane sticking. Undesired air leakage is also a problem with existing throttle bodies.
o: To deal with these two problems requires accurate machining of the bore and the vane to match one another, and the wall of the bore, in the past, has been coated with viscous material, such as Molybond M produced by Molybond Laboratories, to prevent sticking of the vane and air leakage. The material is however expensive, messy and difficult to apply. It is desired to therefore provide a useful alternative or a valve body which does not require coating with viscous material such as Molybond T M In accordance with the present invention there is provided a valve body including an intake bore and a valve in said bore having a vane with an edge movable to be adjacent the wall of said bore, characterised in that at least said edge of said vane is plated with deformable material which abuts said wall when said edge is adjacent said wall.
Advantageously, the deformable material may be tin.
Preferably the vane is plated in a process which involves plating a plurality of vanes.
P:\OPER\DBW\PP4292.98 12/5/99 -3- Advantageously, the valve body may be a throttle body with an air intake bore.
A preferred embodiment of the present invention is hereinafter described, by way of example only, with reference to the accompany drawings, wherein: Figure 1 is a cross-sectional view of a preferred embodiment of a throttle body; and Figure 2 is a detailed view of the area marked X in Figure 1.
A throttle body 2, as shown in Figures 1 and 2, has an air intake bore 4 which can be opened and closed by moving a butterfly valve 6, so as to regulate the flow of air into a fuel 10 injection system of a vehicle. The bore 4 is cylindrical in shape and has an inner wall 8. The valve 6 includes a circular shaped disk 10, which acts a vane, and is held in a slot 14 of a rotatable shaft 12. Opposite ends of the shaft 12 of the valve 6 extend into the wall 8 and the shaft 12 is supported by a bearing assembly. When the valve 6 is closed, the side or edge 16 of the vane 10 lies adjacent to the wall so as to close the air intake bore 4. The vane 10 is o.
made of rigid sheet metal, such as brass or aluminium.
To prevent air leakage and sticking of the edge 16 against the wall 8, the vane 10 is plated with a deformable material 18, for instance tin. At least the edge or side 16 needs to be plated with the material 18, but if desired the entire vane 10 can be coated with the material 20 18. The material 18 must be sufficiently soft and deformable so as to conform with the profile °OeWQ of the wall 8, as the vane 10 is moved. The material 18 must allow the vane 10 to move freely whilst at the same time sitting flush and abutting the wall 8, as shown in Figure 2, to prevent air leakage.
Plating the vane 10, as described above, provides significant advantages over using viscous material, such as Molybond
TM
Plating the vane 10 is considerably less expensive, does not leave any residual mess and as the material 18 conforms to the shape of the wall 8, precise and accurate machining of the bore to match the shape of the vane 10 is no longer required.
The cost of producing the throttle body 2 is therefore reduced.
The vane 10 may be plated with a material 18 either individually or with a group of P:\OPER\DBW\PP4292.98 12/5/99 -4vanes. For a group plating process, a number of vanes 10 may be stacked on top of one another, and plated, whereby only the edges 16 of the vanes 10 are significantly coated with the material 18. Group plating of the vane 10 further reduces costs.
Many modifications will be apparent to those skilled in the art without departing from the scope of the present invention as herein described with reference to the accompanying drawings.
The reference numerals in the following claims are not to be construed as imposing 10 any limitations on the claims.
e a.
C a
Claims (7)
1. A valve body including an intake bore and a valve in said bore having a vane (10) with an edge (16) moveable to be adjacent the wall of said bore characterised in that at least said edge (16) of said vane (10) is plated with the deformable material (18) which abuts said wall when said edge (16) is adjacent said wall
2. A valve body as claimed in claim 1, wherein said deformable material (18) conforms with the profile of the wall as the vane (10) is moved.
3. A valve body as claimed in claim 2, wherein said vane (10) pivots freely whilst said edge (16) is flush with said wall *o A valve body as claimed in any one of the preceding claims, wherein said deformable material (18) is tin. A valve body as claimed in any one of the preceding claims, wherein said vane is plated with said deformable material (18) in a process which includes plating a plurality of said vane
6. A valve body as claimed in any one of the preceding claims, wherein said body (2) :is a throttle body and said bore is an air intake bore
7. A fuel injection system including a valve body as claimed in claim 6.
8. A vehicle engine including a fuel injection system as claimed in claim 7.
9. A vehicle including a vehicle engine as claimed in claim 8. DATED this 12th day of May, 1999 ROBERT BOSCH GmbH By its Patent Attorneys DAVIES COLLISON CAVE
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU28089/99A AU755148B2 (en) | 1998-06-23 | 1999-05-12 | A valve body |
EP99938188A EP1090218B1 (en) | 1998-06-23 | 1999-06-12 | Valve body |
DE59906965T DE59906965D1 (en) | 1998-06-23 | 1999-06-12 | A VALVE BODY |
PCT/DE1999/001728 WO1999067520A1 (en) | 1998-06-23 | 1999-06-12 | Valve body |
JP2000556146A JP2003522867A (en) | 1998-06-23 | 1999-06-12 | Valve body |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AUPP4292 | 1998-06-23 | ||
AUPP4292A AUPP429298A0 (en) | 1998-06-23 | 1998-06-23 | A valve body |
AU28089/99A AU755148B2 (en) | 1998-06-23 | 1999-05-12 | A valve body |
Publications (2)
Publication Number | Publication Date |
---|---|
AU2808999A true AU2808999A (en) | 2000-01-06 |
AU755148B2 AU755148B2 (en) | 2002-12-05 |
Family
ID=25620511
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AU28089/99A Ceased AU755148B2 (en) | 1998-06-23 | 1999-05-12 | A valve body |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP1090218B1 (en) |
JP (1) | JP2003522867A (en) |
AU (1) | AU755148B2 (en) |
DE (1) | DE59906965D1 (en) |
WO (1) | WO1999067520A1 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6843467B2 (en) * | 2001-01-16 | 2005-01-18 | Robert Bosch Gmbh | Flap valve |
DE10237864A1 (en) * | 2002-08-19 | 2004-03-04 | Siemens Ag | Method of closing a throttle body |
JP5032109B2 (en) * | 2006-12-27 | 2012-09-26 | 株式会社ツカサ | Flow path switching device for transferring powder |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1127961A (en) * | 1955-06-14 | 1956-12-28 | Neyrpic Ets | Seal |
US4344396A (en) * | 1978-03-15 | 1982-08-17 | Yamaha Hatsudoki Kabushiki Kaisha | Induction system of multi-cylinder engine |
FR2570789B1 (en) * | 1984-09-27 | 1986-12-05 | Amri | BUTTERFLY VALVE WITH UNIVERSAL CHARACTER AND METHOD FOR MANUFACTURING SAID TAP |
US5081972A (en) * | 1990-02-16 | 1992-01-21 | Siemens Automotive L.P. | Engine throttle blade sealing |
US5035214A (en) * | 1990-02-16 | 1991-07-30 | Siemens Automotive L.P. | Engine throttle blade sealing |
EP0494344A1 (en) * | 1991-01-09 | 1992-07-15 | Firma Carl Freudenberg | Sealing device for a throttle valve construction with a solid shaft |
DE19508355A1 (en) * | 1994-11-30 | 1996-06-05 | Vdo Schindling | Non stick throttle valve for IC engine |
JPH11101137A (en) * | 1997-09-29 | 1999-04-13 | Aisan Ind Co Ltd | Throttle valve assembly and manufacture thereof |
-
1999
- 1999-05-12 AU AU28089/99A patent/AU755148B2/en not_active Ceased
- 1999-06-12 EP EP99938188A patent/EP1090218B1/en not_active Expired - Lifetime
- 1999-06-12 JP JP2000556146A patent/JP2003522867A/en active Pending
- 1999-06-12 WO PCT/DE1999/001728 patent/WO1999067520A1/en active IP Right Grant
- 1999-06-12 DE DE59906965T patent/DE59906965D1/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
EP1090218B1 (en) | 2003-09-10 |
AU755148B2 (en) | 2002-12-05 |
EP1090218A1 (en) | 2001-04-11 |
JP2003522867A (en) | 2003-07-29 |
DE59906965D1 (en) | 2003-10-16 |
WO1999067520A1 (en) | 1999-12-29 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
FGA | Letters patent sealed or granted (standard patent) |