AU755148B2 - A valve body - Google Patents

A valve body Download PDF

Info

Publication number
AU755148B2
AU755148B2 AU28089/99A AU2808999A AU755148B2 AU 755148 B2 AU755148 B2 AU 755148B2 AU 28089/99 A AU28089/99 A AU 28089/99A AU 2808999 A AU2808999 A AU 2808999A AU 755148 B2 AU755148 B2 AU 755148B2
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.)
Ceased
Application number
AU28089/99A
Other versions
AU2808999A (en
Inventor
Klaus Franzke
Budi Tan
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
Priority claimed from AUPP4292A external-priority patent/AUPP429298A0/en
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Priority to AU28089/99A priority Critical patent/AU755148B2/en
Priority to JP2000556146A priority patent/JP2003522867A/en
Priority to EP99938188A priority patent/EP1090218B1/en
Priority to DE59906965T priority patent/DE59906965D1/en
Priority to PCT/DE1999/001728 priority patent/WO1999067520A1/en
Publication of AU2808999A publication Critical patent/AU2808999A/en
Application granted granted Critical
Publication of AU755148B2 publication Critical patent/AU755148B2/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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)
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:OPERDBM298089-99 spe.dw4-4 Septcmb. 2002 -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 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.
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 MolybondTM 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 MolybondTM.
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 moveable to be adjacent the wall 25 of said bore, characterised in that at least said edge of said vane is plated with the deformable rigid material which abuts said wall when said edge is adjacent said wall and deforms to conform with the profile of the wall as the vane is moved.
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 c*1 k> 7 P:QPERDBW28089-99 sp.doo4 Scpembcr. 2002 -3- 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 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 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 15 material 18. The material 18 must be sufficiently soft and deformable so as to conform with the profile of the wall 8, as the vane 10 is moved. The material 18 must allow the Sovane 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.
oo Plating the vane 10, as described above, provides significant advantages over using viscous material, such as MolybondTM. 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 vanes. 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.
P:\OPER\DBW28089-99 pce.doc-4 Septmber, 2002 -4- 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 to any prior art in this specification is not, and should not be taken as, an acknowledgment or any form of suggestion that that prior art forms part of the common general knowledge in Australia.
So o

Claims (9)

1. A valve body including an intake bore and a valve in said bore having a vane with an edge moveable to be adjacent the wall of said bore, characterised in that at least said edge of said vane is plated with the deformable rigid material which abuts said wall when said edge is adjacent said wall and deforms to conform with the profile of the wall as the vane is moved.
2. A valve body as claimed in claim 1, wherein said vane pivots freely whilst said edge is flush with said wall.
3. A valve body as claimed in any one of the preceding claims, wherein said deformable material is tin.
4. A valve body as claimed in any one of the preceding claims, wherein said vane is plated with said deformable material in a process which includes plating a plurality of said vane.
A valve body as claimed in any one of the preceding claims, wherein said body is a 20 throttle body and said bore is an air intake bore.
6. A fuel injection system including a valve body as claimed in claim
7. A vehicle engine including a fuel injection system as claimed in claim 6.
8. A vehicle including a vehicle engine as claimed in claim 7.
9. A valve body substantially as hereinbefore described with reference to the accompanying drawings. DATED this 4 th day of September 2002 ROBERT BOSCH GmbH By its Patent Attorneys C '35 DAVIES COLLISON CAVE 7> l
AU28089/99A 1998-06-23 1999-05-12 A valve body Ceased AU755148B2 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
AU28089/99A AU755148B2 (en) 1998-06-23 1999-05-12 A valve body
JP2000556146A JP2003522867A (en) 1998-06-23 1999-06-12 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

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
AUPP4292A AUPP429298A0 (en) 1998-06-23 1998-06-23 A valve body
AUPP4292 1998-06-23
AU28089/99A AU755148B2 (en) 1998-06-23 1999-05-12 A valve body

Publications (2)

Publication Number Publication Date
AU2808999A AU2808999A (en) 2000-01-06
AU755148B2 true 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)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002055914A1 (en) * 2001-01-16 2002-07-18 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

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4653724A (en) * 1984-09-27 1987-03-31 Applications Mecaniques Et Robinetterie Industrielle Universal type butterfly valve and manufacturing process for same
DE19508355A1 (en) * 1994-11-30 1996-06-05 Vdo Schindling Non stick throttle valve for IC engine

Family Cites Families (6)

* Cited by examiner, † Cited by third party
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
US5035214A (en) * 1990-02-16 1991-07-30 Siemens Automotive L.P. Engine throttle blade sealing
US5081972A (en) * 1990-02-16 1992-01-21 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
JPH11101137A (en) * 1997-09-29 1999-04-13 Aisan Ind Co Ltd Throttle valve assembly and manufacture thereof

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4653724A (en) * 1984-09-27 1987-03-31 Applications Mecaniques Et Robinetterie Industrielle Universal type butterfly valve and manufacturing process for same
DE19508355A1 (en) * 1994-11-30 1996-06-05 Vdo Schindling Non stick throttle valve for IC engine

Also Published As

Publication number Publication date
EP1090218A1 (en) 2001-04-11
JP2003522867A (en) 2003-07-29
AU2808999A (en) 2000-01-06
DE59906965D1 (en) 2003-10-16
EP1090218B1 (en) 2003-09-10
WO1999067520A1 (en) 1999-12-29

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FGA Letters patent sealed or granted (standard patent)