EP1002195B1 - Regelvorrichtung sowie verfahren zu deren herstellung - Google Patents
Regelvorrichtung sowie verfahren zu deren herstellung Download PDFInfo
- Publication number
- EP1002195B1 EP1002195B1 EP98937497A EP98937497A EP1002195B1 EP 1002195 B1 EP1002195 B1 EP 1002195B1 EP 98937497 A EP98937497 A EP 98937497A EP 98937497 A EP98937497 A EP 98937497A EP 1002195 B1 EP1002195 B1 EP 1002195B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- piston
- adjusting device
- control
- pump
- tubular profile
- 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.)
- Expired - Lifetime
Links
Images
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
- F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
- F02M59/20—Varying fuel delivery in quantity or timing
- F02M59/24—Varying fuel delivery in quantity or timing with constant-length-stroke pistons having variable effective portion of stroke
- F02M59/26—Varying fuel delivery in quantity or timing with constant-length-stroke pistons having variable effective portion of stroke caused by movements of pistons relative to their cylinders
- F02M59/28—Mechanisms therefor
Definitions
- the invention relates to a control device for Control of the delivery rate for a fuel injection pump, the control device a Pump cylinder, a pump piston with oblique Control edge and a regulating sleeve, which a piston foot of the pump piston in the axial direction freely movable, the piston foot through the Regulating sleeve is guided exactly in the direction of rotation.
- Such control devices are from the prior art Technology for controlling the delivery rate of fuel injection pumps, especially for diesel engines known. They usually work on the overflow principle with inclined edge control, which regulates the flow rate by turning the pump piston allows.
- the pump piston has a longitudinal groove, over which the pressure chamber above the piston always with the one below a bevel edge (control edge) Space is connected.
- the useful stroke of the pump piston can thus can be changed by twisting it. This is done by a control rod, which is over a sprocket attacks on the regulating sleeve.
- the Regulating sleeve firmly connected to the pump piston without to influence its lifting movement.
- the control of the Control rod movement is either mechanical or electronically.
- control rod 80 is a Has teeth that in the outer teeth of the Regulating sleeve 81 engages.
- the regulating sleeve must be used 81 an axial movement of the pump piston 82 in the pump cylinder Allow 83, but in the circumferential direction can twist.
- a control handlebar plate with the pipe profile on the one facing the pump cylinder Which is connected to the end of the pump cylinder Circumferential direction partially encircled closely.
- the regulating sleeve an elongated thin-walled tubular profile, preferably made of Thermoformed sheet, a control handle plate, which with the Pipe profile is connected and a control arm at the Has control handlebar plate.
- control link plate with the Pipe profile on the pump cylinder facing End is connected. This can be done, for example happen that the tube profile at two opposite Circular sections through the control handlebar plate protrudes through and two other opposite Circular sections supported on the control handlebar plate.
- control link plate includes the pump cylinder so that it in Circumferential direction is rotatable relative to the pump cylinder. This will remove the regulating sleeve from the pump cylinder guided.
- An advantageous embodiment of the present Invention provides that between the piston foot and regulating sleeve Line contact takes place. This means, that by appropriate design of the Pipe profile or the piston foot no flat Contact areas but only along a line Touch points are formed. Only the The piston foot is in contact with the regulating sleeve. Thus, maximum axial freedom of movement of the Pump piston guaranteed and at the same time a effective rotation of the same created. Tilting and wear is thus counteracted.
- Another advantageous embodiment provides that between piston foot and regulating sleeve preferably only Point touches are provided. This will make the Friction between piston foot and regulating sleeve minimized and friction wear is significantly reduced. Moreover there is a risk of pinching the piston foot in the Regulation sleeve minimized.
- the regulating sleeve is a tubular profile with beads parallel to the longitudinal axis. This enables one simple design of the piston foot and line contact the same with the regulating sleeve. Also enable the beads a relatively simple manufacture of the tubular profile and cause additional stiffening thereof.
- the regulating sleeve has a smooth tubular profile. This means that the cross-shaped or cross-section cloverleaf regulating sleeve in contrast to that beaded tube profile has smooth walls and the Point or line contact through the shape of the Piston foot takes place.
- tubular profile and the control link plate are welded together.
- Welding process with low heat distortion in Consideration. A few welding spots are sufficient.
- Yet another embodiment of the present invention provides that the tubular profile and the control link plate are riveted together. This is particularly the case with small quantities advantageous and enables non-positive connection without heat distortion.
- the tubular profile Has slide coating. It can be for example, a slip-reducing metal or Plastic coating (e.g. Teflon) act which is applied to the tubular profile sheet.
- a slip-reducing metal or Plastic coating e.g. Teflon
- Fig. 1 shows an embodiment of the control device 1 for a fuel injection pump according to the present invention
- a pump cylinder 2 has, in which a pump piston 3 with not shown groove and control edge moves up and down, and one with the pump piston 3 via a piston rod 30 connected piston foot 4, which in a Regulating sleeve 5 axially freely movable and in the circumferential direction is tied up.
- the regulating sleeve 5 has a tubular profile 6, in which the piston rod 30 move freely up and down in the axial direction can, and a control handlebar plate 7, which with the tubular profile 6 is non-positively connected.
- On the control handlebar 7 is a hook-shaped control handlebar 8 molded, the free end of which has a bead.
- the pump piston 3 moves Pump cylinder 2 up and down, creating a corresponding Fuel quantity is promoted. Slides at the same time the piston foot 4, 4 'up and down in the regulating sleeve, a line contact takes place on the beads 9.
- the control arm 8 is rotated, whereby the regulating sleeve 5 relative to the pump cylinder 2 is twisted.
- the pump piston 3 in Pump cylinder 2 rotates and thereby the position of the not shown control edge or longitudinal groove to the fuel openings is changed in the pump cylinder. Consequently takes place between pump cylinder 2 and regulating sleeve 5 only a twist in the circumferential direction instead, whereas between regulating sleeve 5 and piston foot 4 one axial relative movement takes place.
- Fig. 2 shows a section along the line II-II in Fig. 1, the pump cylinder 2, the tubular profile 6, the control link plate 7 and the control link 8 and the pump piston 3 shown.
- the control handlebar 8 stands like a hook vertically on the control link plate 7, the tapered towards the control handlebar 8 Cantilever forms.
- At the level of the pump cylinder 2 are Flattened sides of the control handlebar plate.
- At the end of Pump cylinder 2 closes a circular arc Curvature of the control handlebar plate.
- the tubular profile 6 passed through the control link plate 7.
- the control handle plate lies in the area of the flattened sides 7 on the pump cylinder 2 so that they have a Permits rotary movement in the circumferential direction. All in all the regulating sleeve 5 comprises the pump cylinder 2 in such a way that safe play free guidance in the circumferential direction is guaranteed. Furthermore, the positions are on which the piston foot 4 the beads 9 of the tubular profile 6th touched to recognize. The tube profile 6 is over rivets 20 connected to the control handlebar plate 7.
- Fig. 3 shows a section along the line III-III in Fig. 1.
- the contour of the tubular profile 6 of the regulating sleeve 5 is designed similar to a shamrock or a cross.
- the tube profile 6 lies on its angled Inside of the pump cylinder 2, in which the Pump piston 3 oscillates up and down and each after setting the control handlebar in the circumferential direction is twisted.
- the profile sleeve 6 is in the circumferential direction rotatable around the pump cylinder 2, the piston foot 4, of both the beads 9 and the corner corners 31 of the tubular profile 6 in almost line contact with the Pipe profile 6 stands, is bound in the circumferential direction, i.e. takes part in the rotary movement of the regulating sleeve.
- Fig. 4 shows a section along the line IV-IV Fig. 1, in which the piston foot 4 in the tubular profile 6 with the Beads 9 is shown. Only the piston foot 4 touches the tube profile 6 in the form of imaginary lines.
- the Piston rod 30 runs without play in the regulating sleeve 5 back and forth.
- the piston foot 4 has one cuboid shape, the small side faces how cylinder sections are curved. Even in the Angular corners 31 of the tubular profile 6 largely take place Line contact instead.
- Fig. 5 shows a section along the line V-V Fig. 1.
- the pump cylinder 2 the pump piston 3, the piston foot 4, the regulating sleeve 5 and that Pipe profile 6 and the control link plate 7 shown.
- FIG. 6 shows another embodiment of the present Invention, depicting those from Fig. 4 corresponds in principle.
- the shamrock-shaped Pipe profile 60 has smooth walls here, i.e. Walls without beads and the corresponding point contact is protruding by hemispherical Bulges 61, 62, 63, 64, 65, 66 on the piston foot 67 generated.
- Fig. 7 shows a section along the line VII-VII from Fig. 6. Here the bulges 62, 65 of the Piston foot 67 and the smooth, i.e. unsicked wall of the tubular profile 60 shown.
- Fig. 8 shows that in the previous figures Control device shown in the engine block attached condition.
- Control device shown in the engine block attached condition There is a with reference numeral 90 first rib of the engine block and a second at 92 Rib of the engine block.
- Reference numeral 91 defines the one formed by the two ribs 90, 92 Guide.
- the regulating sleeve 5 is by the Intervention of the circular projection of the Control handle plate 7 in a cast guide groove 91 of the engine block secured against axial displacement.
- the groove 91 has enough play that the Can twist the regulating sleeve in the circumferential direction.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (AREA)
- Reciprocating Pumps (AREA)
Description
- Fig. 1
- einen Schnitt durch eine erfindungsgemäße Regelvorrichtung;
- Fig. 2
- einen Schnitt entlang der Linie II-II aus Fig. 1;
- Fig. 3
- einen Schnitt entlang der Linie III-III aus Fig. 1;
- Fig. 4
- einen Schnitt entlang der Linie IV-IV aus Fig. 1;
- Fig. 5
- einen Schnitt entlang der Linie V-V aus Fig. 1;
- Fig. 6
- eine weitere Ausführungsform in der entsprechenden Schnittebene wie Fig. 4;
- Fig. 7
- einen Teilschnitt entlang der Linie VII-VII aus Fig. 6;
- Fig. 8
- eine erfindungsgemäße Regelvorrichtung im eingebauten Zustand;
- Fig. 9
- eine Regelvorrichtung vom Stand der Technik.
Claims (9)
- Regelvorrichtung zur Steuerung der Fördermenge bei einer Kraftstoffeinspritzpumpe, wobei die Regelvorrichtung (1) einen Pumpenzylinder (2), einen Pumpenkolben (3) mit schräger Steuerkante und eine Regulierhülse (5) aufweist, welche einen Kolbenfuß (4; 67) des Pumpenkolbens (3) in axialer Richtung frei beweglich umfaßt, wobei der Kolbenfuß (4; 67) durch die Regulierhülse (5) in Drehrichtung exakt geführt ist,
dadurch gekennzeichnet, daß die Regulierhülse (5) als Rohrprofil (6; 60) mit über die gesamte Länge gleichbleibendem Querschnitt ausgebildet ist und mit ihrem pumpenseitigen Ende einen zylindrischen Abschnitt des Pumpenzylinders (2) axial verschieblich und drehbeweglich umfaßt. - Regelvorrichtung nach Anspruch 1,
dadurch gekennzeichnet, daß eine Regellenkerplatte (7) mit dem Rohrprofil (6; 60) an dessen dem Pumpenzylinder (2) zugewandten Ende verbunden ist, welche den Pumpenzylinder (2) in Umfangsrichtung partiell kreisbogenförmig eng umfaßt. - Regelvorrichtung nach Anspruch 1,
dadurch gekennzeichnet, daß Linienberührungen zwischen Kolbenfuß (4; 67) und Regulierhülse (5) vorgesehen sind. - Regelvorrichtung nach Anspruch 1,
dadurch gekennzeichnet, daß Punktberührungen zwischen Kolbenfuß (4; 67) und Regulierhülse (5) vorgesehen sind. - Regelvorrichtung nach Anspruch 1,
dadurch gekennzeichnet, daß die Regulierhülse (5) ein gesicktes Rohrprofil (6) aufweist. - Regelvorrichtung nach Anspruch 1,
dadurch gekennzeichnet, daß der Kolbenfuß (67) an den Berührpunkten hervorstehende Auswölbungen (61, 62, 63, 64, 65, 66) aufweist. - Regelvorrichtung nach Anspruch 1,
dadurch gekennzeichnet, daß Rohrprofil (6; 60) und Regellenkerplatte (7) miteinander verschweißt sind. - Regelvorrichtung nach Anspruch 1,
dadurch gekennzeichnet, daß Rohrprofil (6; 60) und Regellenkerplatte (7) miteinander vernietet sind. - Regelvorrichtung nach Anspruch 1,
dadurch gekennzeichnet, daß das Rohrprofil (6; 60) eine Gleitbeschichtung aufweist.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19734196 | 1997-08-07 | ||
DE19734196A DE19734196A1 (de) | 1997-08-07 | 1997-08-07 | Regelvorrichtung sowie Verfahren zu deren Herstellung |
PCT/EP1998/003680 WO1999007994A1 (de) | 1997-08-07 | 1998-06-18 | Regelvorrichtung sowie verfahren zu deren herstellung |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1002195A1 EP1002195A1 (de) | 2000-05-24 |
EP1002195B1 true EP1002195B1 (de) | 2002-03-27 |
Family
ID=7838260
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98937497A Expired - Lifetime EP1002195B1 (de) | 1997-08-07 | 1998-06-18 | Regelvorrichtung sowie verfahren zu deren herstellung |
Country Status (5)
Country | Link |
---|---|
US (1) | US6196198B1 (de) |
EP (1) | EP1002195B1 (de) |
JP (1) | JP4057775B2 (de) |
DE (2) | DE19734196A1 (de) |
WO (1) | WO1999007994A1 (de) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102008050382B4 (de) * | 2008-10-02 | 2014-07-03 | Motorenfabrik Hatz Gmbh & Co Kg | Einspritzsystem zum Betrieb kleiner Dieselmotoren |
DE102008050381B4 (de) * | 2008-10-02 | 2014-09-25 | Motorenfabrik Hatz Gmbh & Co Kg | Einspritzsystem für Dieselkraftstoff über ein Common Rail (CR) |
DE102010039980A1 (de) * | 2010-08-31 | 2012-03-01 | Man Diesel & Turbo Se | Zentriervorrichtung für eine Kraftstoffeinspritzdüse |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1913520A1 (de) * | 1969-03-18 | 1970-09-24 | Bosch Gmbh Robert | Mehrzylinder-Kraffstoffeinsprifzpumpe fuer Brennkraffmaschinen |
US4430977A (en) * | 1980-02-28 | 1984-02-14 | Yanmar Diesel Engine Co., Ltd. | Fuel injection pump for internal combustion engines |
DE3105205A1 (de) * | 1981-02-13 | 1982-12-30 | Günter 8543 Hilpoltstein Elsbett | Kolbenpumpe zum foerdern von fluessigkeiten, insbesondere kraftstoff fuer hubkolben-brennkraftmaschinen |
JPS6027776A (ja) | 1983-07-26 | 1985-02-12 | Mitsubishi Heavy Ind Ltd | 燃料噴射ポンプとその製造方法 |
JPS60132064A (ja) * | 1983-12-19 | 1985-07-13 | Nippon Denso Co Ltd | 燃料噴射ポンプ |
JPS60166751A (ja) * | 1984-02-08 | 1985-08-30 | Nippon Denso Co Ltd | 内燃機関用燃料噴射装置 |
US4754737A (en) * | 1984-05-08 | 1988-07-05 | Mitsubishi Jidosha Kogyo Kabushiki Kaisha | Fuel injection pump device and method for settling the same |
DE3428174A1 (de) * | 1984-07-31 | 1986-02-13 | Robert Bosch Gmbh, 7000 Stuttgart | Kraftstoffeinspritzpumpe fuer brennkraftmaschinen |
DE3544051A1 (de) * | 1985-12-13 | 1987-06-25 | Daimler Benz Ag | Einspritzpumpe fuer brennkraftmaschinen |
US4737086A (en) * | 1986-05-27 | 1988-04-12 | Diesel Kiki Co., Ltd. | Fuel injection pump having variable prestroke mechanism |
EP0301222B1 (de) * | 1987-07-25 | 1992-05-06 | Robert Bosch Gmbh | Kraftstoffeinspritzpumpe für Brennkraftmaschinen |
DE3923306A1 (de) * | 1989-07-14 | 1991-01-24 | Daimler Benz Ag | Schraegkantengesteuerte kraftstoffeinspritzpumpe fuer brennkraftmaschinen |
DE4134592C2 (de) * | 1991-10-19 | 1993-10-07 | Daimler Benz Ag | Kraftstoffeinspritzpumpe für eine Brennkraftmaschine |
-
1997
- 1997-08-07 DE DE19734196A patent/DE19734196A1/de not_active Ceased
-
1998
- 1998-06-18 DE DE59803539T patent/DE59803539D1/de not_active Expired - Fee Related
- 1998-06-18 EP EP98937497A patent/EP1002195B1/de not_active Expired - Lifetime
- 1998-06-18 WO PCT/EP1998/003680 patent/WO1999007994A1/de active IP Right Grant
- 1998-06-18 JP JP2000506453A patent/JP4057775B2/ja not_active Expired - Lifetime
-
2000
- 2000-02-04 US US09/498,113 patent/US6196198B1/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
JP4057775B2 (ja) | 2008-03-05 |
WO1999007994A1 (de) | 1999-02-18 |
DE59803539D1 (de) | 2002-05-02 |
JP2001523784A (ja) | 2001-11-27 |
EP1002195A1 (de) | 2000-05-24 |
US6196198B1 (en) | 2001-03-06 |
DE19734196A1 (de) | 1999-02-11 |
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