DE102008050661A1 - Drive device i.e. high pressure pump, for fuel injection to reciprocating piston engine, has return spring component consisting of pairs of helical compression springs, and pistons provided on supporting element - Google Patents

Drive device i.e. high pressure pump, for fuel injection to reciprocating piston engine, has return spring component consisting of pairs of helical compression springs, and pistons provided on supporting element Download PDF

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Publication number
DE102008050661A1
DE102008050661A1 DE200810050661 DE102008050661A DE102008050661A1 DE 102008050661 A1 DE102008050661 A1 DE 102008050661A1 DE 200810050661 DE200810050661 DE 200810050661 DE 102008050661 A DE102008050661 A DE 102008050661A DE 102008050661 A1 DE102008050661 A1 DE 102008050661A1
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DE
Germany
Prior art keywords
return spring
compression springs
helical compression
spring component
springs
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.)
Withdrawn
Application number
DE200810050661
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German (de)
Inventor
Vladimir Volchkov
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Individual
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Individual
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Priority to DE200810050661 priority Critical patent/DE102008050661A1/en
Publication of DE102008050661A1 publication Critical patent/DE102008050661A1/en
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B9/00—Piston machines or pumps characterised by the driving or driven means to or from their working members
    • F04B9/02—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical
    • F04B9/04—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical the means being cams, eccentrics or pin-and-slot mechanisms
    • F04B9/045—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical the means being cams, eccentrics or pin-and-slot mechanisms the means being eccentrics
    • 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
    • F02M59/02—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps of reciprocating-piston or reciprocating-cylinder type
    • F02M59/10—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps of reciprocating-piston or reciprocating-cylinder type characterised by the piston-drive
    • F02M59/102—Mechanical drive, e.g. tappets or cams
    • 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
    • F02M59/44—Details, components parts, or accessories not provided for in, or of interest apart from, the apparatus of groups F02M59/02 - F02M59/42; Pumps having transducers, e.g. to measure displacement of pump rack or piston

Abstract

The device has a return spring component (F) consisting of pairs of helical compression springs, where each pair consists of springs with left and right rotational directions. The springs are located in the interior surface of a base body. The exterior surface of a supporting element (S) is adjustably guided with respect to the interior surface of the base body. A part of the compression springs is provided into receiving holes of the base body, and another part of the compression springs is provided into receiving holes of the element. Pistons (L) are provided on the element.

Description

Die Erfindung betrifft Triebwerk der Hubkolbenmaschinen, insbesondere der Hochdruckpumpen für Kraftstoffeinspritzung.The The invention relates to the engine of reciprocating engines, in particular the high-pressure pumps for fuel injection.

Nahe Konstruktionen des Triebwerks der Hubkolbenmaschinen beruhen sich auf dem Konzept von „Bosch” für die Hochdruckpumpen, die von dieser Firma ab Jahr 2001 veröffentlicht wurden, z. B. DE 10 2006 041 673 . Dieses Triebwerk besteht aus 4 hubbeweglichen Hauptelementen: Rolle, Stützelement (Rollenschuh), Rückstellfeder (Schraubendruckfeder) und Stößel. Der Stößel dient als Rückstellfederadapter, nimmt Querkräfte von Rolle/Stützelement auf und verhindert die Seitenbewegung der Rolle.Close designs of the engine of the reciprocating engines are based on the concept of "Bosch" for the high-pressure pumps, which were published by this company from year 2001, z. B. DE 10 2006 041 673 , This engine consists of 4 main lifting elements: roller, support element (roller shoe), return spring (helical compression spring) and plunger. The plunger serves as a return spring adapter, absorbs lateral forces of roller / support element and prevents the lateral movement of the roller.

Das Konzept hat folgende Nachteile:

  • 1. Kompliziertheit der Stößelkonstruktion beim Fertigen.
  • 2. Große Reibung des stählernen Stößels mit Alugehäuse, weil Reibungskoeffizient Stahl mit Aluminium mehrmals größer als Stahl mit Stahl ist.
  • 3. Es findet Verdrehung der Kolbeneinheit (Kolben + Stützelement + Rolle + Schraubendruckfeder + Stößel) um ihrer Achse statt, dabei weicht sich die Drehebene der Rolle relativ der Drehebene des Nockens ab, aber dank gyroskopischem Effekt und der Reibung zwischen der Rolle und dem Nocken bleibt diese Abweichung klein (bis zu einem letzten Zeitpunkt). Es gibt 2 Hauptursachen dieses Verdrehens: – Reaktionsdrehmoment von der spiralförmigen Schraubendruckfeder, – bremsende Wirkung der Reibung beim Kontakt der Rollestirnflächen mit der Stößelinnerfläche (der Kontakt mal einer Stirnfläche mal der Andere).
The concept has the following disadvantages:
  • 1. Complexity of the ram construction during manufacturing.
  • 2. Large friction of the steel plunger with aluminum housing, because coefficient of friction steel with aluminum is several times greater than steel with steel.
  • 3. It takes place rotation of the piston unit (piston + support member + roller + helical compression spring + plunger) about its axis, while the plane of rotation of the role deviates relative to the plane of rotation of the cam, but thanks to gyroscopic effect and the friction between the roller and the cam this deviation remains small (until a last point in time). There are 2 main causes of this twisting: reaction torque from the spiral helical compression spring, braking effect of the friction upon contact of the rolling end surfaces with the tappet inner surface (the contact one end face times the other).

Mit Verschleiß und Vibrationserhöhung sowie wegen Schmiermangels bei Temperatursteigerung vergrößert sich Reibung auf allen Kontaktflächen der Kolbeneinheit, und wächst das Reaktionsdrehmoment von der Schraubendruckfeder – damit wächst der Verdrehwinkel mit katastrophaler Folge für die Hochdruckpumpe. Aus diesem Grund bleibt denkbarer Einsatz des Triebwerks auf dem Grund „Nocken-Rolle-System” für Verbrennungsmaschinen unmöglich wegen erwähnten Verdrehens der Kolbeneinheit, das mit der Temperaturerhöhung rasch wächst.With Wear and vibration increase and because of Lack of lubrication increases with temperature increase friction on all contact surfaces of the piston unit, and the reaction torque of the helical compression spring grows - so that grows the twist angle with catastrophic consequence for the high-pressure pump. For this reason, conceivable use of the engine remains on the Reason "cam-roller system" for combustion impossible because of mentioned twisting of the piston unit, with the Temperature increase is growing rapidly.

Im Patent DE 10 2005 046 670 soll Verdrehsicherung dank dem Kontakt einer im Gehäuse untergebrachten Kugel mit einer Nut auf der Stößelaußenfläche verkleinern – damit wird Unzulassen des Verdrehens des Stößels erreicht. Diese Idee hat sich vermutlich wegen folgendes nicht durchsetzen:

  • – dieses Unzulassen bringt nicht viel, weil diese Verdrehsicherung dem Verdrehen dem Stützelement und der Rolle wenig verhindert,
  • – Schwierigkeit zuverlässiger und preisgünstiger Abdichtung (Unterbringung) des Verdrehsicherungselements wegen der Schwierigkeit der Abdichtung vom Paar aus Teilen mit stark unterschiedlichen Wärmeausdehnungskoeffizienten: stählernes Verdrehsicherungselement im Alugehäuse,
  • – ein Konstruktionsfehler (nach den Patentzeichnungen): das Kontakt des Verdrehsicherungselementes mit der Nut im Stößel geht in der Ebene vor, die der Drehebene der Nockenwelle senkrecht ist, – einseitige Kraftanlegung vom Verdrehsicherungselement an Stößel bildet einseitige Kraftanlegung vom Stößel an das Stützelement (und an die Rolle) – weswegen wird das Drehmoment bei der Kolbeneinheit hervorgerufen.
In the patent DE 10 2005 046 670 should prevent rotation by virtue of the contact of a housed in the housing ball with a groove on the plunger outer surface - thus denying the rotation of the plunger is achieved. This idea probably did not prevail because of the following:
  • - This omission does not bring much, because this rotation prevents twisting the support member and the role little,
  • Difficulty of reliable and inexpensive sealing (housing) of the anti-rotation element because of the difficulty of sealing the pair of parts with greatly different coefficients of thermal expansion: steel anti-rotation element in the aluminum housing,
  • A design error (according to the patent drawings): the contact of the anti-rotation element with the groove in the plunger is in the plane which is perpendicular to the plane of rotation of the camshaft, - unilateral force application of Verdrehsicherungselement to plunger forms unilateral force application of the plunger to the support element (and the role) - why the torque is caused in the piston unit.

In DE 10 2004 011 284 und DE 10 2005 060 957 ist eine Idee vorgelegt, das Ziel derer ist es, Querkräfte von Rolle/Stützelement an den Stößel zu verkleinern: das wird dank Verschiebung der Gehäuselängsachse relativ der Nockenwelledrehachse (sie schneiden sich miteinander nicht) erlangt. Resultierendes Effekt war vermutlich nicht bedeutend, um erhöhte Herstellungs- und Montagekosten zu rechtfertigen.In DE 10 2004 011 284 and DE 10 2005 060 957 is presented an idea, the goal of which is to reduce lateral forces of roller / support element to the plunger: this is due to displacement of the housing longitudinal axis relative to the camshaft rotation axis (they do not intersect with each other) obtained. The resulting effect was probably not significant to justify increased manufacturing and assembly costs.

Das Ziel vorgeschlagener Erfindung ist das Schaffen eines Triebwerks mit der Nocken- oder Exzenterwelle angetriebener Hubkolbenmaschine, das von den benannten Nachteilen frei ist.The The aim of the proposed invention is the creation of an engine with the cam or eccentric shaft driven reciprocating engine, that is free from the named disadvantages.

Dieses Ziel wird dadurch erlangt, dass dieses Triebwerk beinhaltet:

  • – einen Grundkörper,
  • – eine von einem Nocken/Exzenter abgewandete Rolle,
  • – ein die Rolle umfassendes Stützelement,
  • – einen Kolben, der auf das Stützelement hin beaufschlagt,
  • – eine Rückstellfederkomponente,
und dadurch gekennzeichnet,
dass die Schraubendruckfederkomponente aus 1 oder 2 Paaren Schraubendruckfedern besteht, wobei jedes Paar aus zwei Federn mit linkem und rechtem Drehsinnen besteht, und sowohl das Stützelement, als auch die Federn sich im Innern des Grundkörpers befinden, wobei die Außenfläche des Stützelements bezüglich der Innerfläche des Grundkörpers verschiebbar geführt ist, und ein Teil jeder Feder in der Aufnahmehöhle des Grundkörpers sich befindet und ihr anderer Teil beaufschlagt auf das Stützelement hin (oder ein auf ihm liegendes Zwischenteil).This goal is achieved by including this engine:
  • A basic body,
  • A roller facing away from a cam / eccentric,
  • A supporting element comprising the roller,
  • A piston which acts on the support element,
  • A return spring component,
and characterized
that the helical compression spring component consists of 1 or 2 pairs of helical compression springs, each pair consisting of two springs with left and right turning inside, and both the support member, and the springs are located inside the body, wherein the outer surface of the support member with respect to the inner surface of the body slidably guided, and a part of each spring in the receiving cavity of the body is located and its other part applied to the support element (or an intermediate part lying on it).

Auf den 1 und 2 sind Bespiele der Realisation vorgeschlagener Erfindung für eine Hochdruckpumpe dargestellt, dabei

B
– Ventilblock,
D
– Druckraum,
E
– Saugventil,
F
– Rückstellfeder,
G
– Gehäuse,
H
– Hochdruckventil,
K
– Grundkörper,
L
– Kolben,
N
– Nocken,
R
– Rolle,
S
– Stützelement,
Z1
– Zufuhrkanal im Gehäuse,
Z2
– Zufuhrkanal im Grundkörper,
Z3
– Einlasskanal im Saugventils.
On the 1 and 2 are examples of the realization of proposed invention shown for a high-pressure pump, thereby
B
- valve block,
D
- pressure room,
e
- Suction valve,
F
- return spring,
G
- Casing,
H
- high pressure valve,
K
- basic body,
L
- Piston,
N
- cams,
R
- role,
S
Support element,
Z1
- supply channel in the housing,
Z2
- supply channel in the body,
Z3
- inlet channel in the suction valve.

Zwecks der Verkleinerung der Querkräfte von Rolle R/Stützelement S an den Grundkörper K schneidet die Längsachse des Grundkörpers K die Drehachse des Nockens N nicht:For the purpose of the reduction of the lateral forces of roller R / support element S to the body K cuts the longitudinal axis of the basic body K, the axis of rotation of the cam N is not:

1 – dank linearer Verschiebung des Grundkörpers K relativ des Gehäuses G, 1 - Thanks to linear displacement of the body K relative to the housing G,

2 – dank axialer Verschiebung des Grundkörpers K relativ des Gehäuses G. 2 - Thanks to axial displacement of the body K relative to the housing G.

Aber, wie bei herkömmlichen Triebwerken, die Längsachse des Gehäuses G schneidet die Drehachse der Nockens N.But, as with conventional engines, the longitudinal axis of the housing G intersects the axis of rotation of the cam N.

Die Außenfläche des Stützelements und die Innenfläche des Grundkörpers können sowohl zylindrisch als auch flach sein.The Outer surface of the support element and the inner surface of the main body can be both cylindrical as also be flat.

Das Fehlen des Stößels verringert die Herstellungs- und Montagekosten; der Energiebetriebsaufwand wird wesentlicher weniger dank dem, dass die Reibungskräfte zwischen dem Grundkörper K und dem Stützelement S (Kontakt „Stahl-Stahl”) mehrmals weniger sind als zwischen dem stählernen Stößel mit dem Alugehäuse der bekannten Triebwerke.The Absence of the plunger reduces the manufacturing and installation costs; the energy consumption becomes more essential less thanks to the fact that the frictional forces between the Body K and the support element S (contact "steel-steel") several times are less than between the steel plunger with the aluminum housing of the known engines.

Dank dem, dass die Rückstellfederkomponente aus Schraubendruckfedern mit gegenseitiger Wirkung – mit linkem und rechtem Drehsinnen – besteht, bewirkt sie kein Drehmoment, somit wird die Stabilität der vorgeschlagenen Konstruktion gegen das Verdrehen der Kolbeneinheit gewährleistet.thanks in that the return spring component of helical compression springs with mutual effect - with left and right turning inside - exists, it does not cause any torque, thus the stability the proposed construction against the rotation of the piston unit guaranteed.

ZITATE ENTHALTEN IN DER BESCHREIBUNGQUOTES INCLUDE IN THE DESCRIPTION

Diese Liste der vom Anmelder aufgeführten Dokumente wurde automatisiert erzeugt und ist ausschließlich zur besseren Information des Lesers aufgenommen. Die Liste ist nicht Bestandteil der deutschen Patent- bzw. Gebrauchsmusteranmeldung. Das DPMA übernimmt keinerlei Haftung für etwaige Fehler oder Auslassungen.This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Zitierte PatentliteraturCited patent literature

  • - DE 102006041673 [0002] - DE 102006041673 [0002]
  • - DE 102005046670 [0005] - DE 102005046670 [0005]
  • - DE 102004011284 [0006] - DE 102004011284 [0006]
  • - DE 102005060957 [0006] - DE 102005060957 [0006]

Claims (2)

Das Triebwerk einer mit Nocken-/Exzenterwelle angetriebenen Hubkolbenmaschine mit mindestens einer Kolbeneinheit beinhaltet – einen Grundkörper, – eine von einem Nocken/Exzenter abgewandete Rolle/Kugel, – ein die Rolle/Kugel umfassendes Stützelement, – einen Kolben, der das Stützelement hin beaufschlagt, – eine Rückstellfederkomponente, und dadurch gekennzeichnet, dass die Rückstellfederkomponente aus 1 oder einigen Paaren Schraubendruckfedern besteht, wobei jedes Paar aus Federn mit linkem und rechtem Drehsinnen besteht, und sich sowohl das Stützelement, als auch die Federn im Innern des Grundkörpers befinden, wobei die Außenfläche des Stützelements bezüglich der Innerfläche des Grundkörpers verschiebbar geführt ist, und ein Teil jeder Feder befindet sich in der Aufnahmehöhle des Grundkörpers und ihr anderer Teil beaufschlagt hin das Stützelement (oder ein auf ihm liegendes Zwischenteil).The engine of a cam / eccentric shaft driven reciprocating engine with at least one piston unit includes - a base body, - a cam / eccentric facing away from a roller / ball, - a roller / ball comprehensive support element, - a piston which acts on the support member out, A return spring component, and characterized in that the return spring component consists of 1 or a few pairs of helical compression springs, each pair consisting of springs with left and right turning inside, and both the support element and the springs are located inside the main body, the outer surface the support member is slidably guided with respect to the inner surface of the body, and a part of each spring is located in the receiving cavity of the body and its other part acts on the support element (or an intermediate part lying on it). Das Triebwerk nach Anspruch 1 dadurch gekennzeichnet, dass die Längsachse des Grundkörpers die Drehachse des Nockens/der Exzenterwelle nicht schneidet.The engine according to claim 1, characterized that the longitudinal axis of the base body, the axis of rotation of the cam / eccentric shaft does not intersect.
DE200810050661 2008-09-22 2008-09-22 Drive device i.e. high pressure pump, for fuel injection to reciprocating piston engine, has return spring component consisting of pairs of helical compression springs, and pistons provided on supporting element Withdrawn DE102008050661A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE200810050661 DE102008050661A1 (en) 2008-09-22 2008-09-22 Drive device i.e. high pressure pump, for fuel injection to reciprocating piston engine, has return spring component consisting of pairs of helical compression springs, and pistons provided on supporting element

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200810050661 DE102008050661A1 (en) 2008-09-22 2008-09-22 Drive device i.e. high pressure pump, for fuel injection to reciprocating piston engine, has return spring component consisting of pairs of helical compression springs, and pistons provided on supporting element

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DE102008050661A1 true DE102008050661A1 (en) 2010-03-25

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102588239A (en) * 2012-02-29 2012-07-18 太仓市金鹿电镀有限公司 Hydraulic pump
WO2013010627A1 (en) * 2011-07-15 2013-01-24 Deutz Aktiengesellschaft Roller tappet pump unit
CN110821774A (en) * 2019-11-29 2020-02-21 江苏科技大学 Cam slider type plunger pump
GB2583076A (en) * 2019-04-08 2020-10-21 Delphi Tech Ip Ltd Fuel pump assembly

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004011284A1 (en) 2004-03-09 2005-09-29 Robert Bosch Gmbh High-pressure pump, in particular for a fuel injection device of an internal combustion engine
DE102005046670A1 (en) 2005-09-29 2007-04-05 Robert Bosch Gmbh High pressure pump for fuel injection device of internal combustion engine, has ball indirectly fixed in part of base plate in tangential direction to tappet and engaged in groove approximately radial to longitudinal axis of tappet
DE102005060957A1 (en) 2005-12-20 2007-06-21 Industriehansa Consulting & Engineering Gmbh Pumping unit for a high-pressure pump has a pumping unit, a cylinder and multiple pistons and piston-guide devices for a sliding and lifting operation
DE102006041673A1 (en) 2006-02-20 2007-08-23 Robert Bosch Gmbh High pressure pump especially for fuel injection in IC engine has the cam follower supported axially by hardened low wear surfaces

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004011284A1 (en) 2004-03-09 2005-09-29 Robert Bosch Gmbh High-pressure pump, in particular for a fuel injection device of an internal combustion engine
DE102005046670A1 (en) 2005-09-29 2007-04-05 Robert Bosch Gmbh High pressure pump for fuel injection device of internal combustion engine, has ball indirectly fixed in part of base plate in tangential direction to tappet and engaged in groove approximately radial to longitudinal axis of tappet
DE102005060957A1 (en) 2005-12-20 2007-06-21 Industriehansa Consulting & Engineering Gmbh Pumping unit for a high-pressure pump has a pumping unit, a cylinder and multiple pistons and piston-guide devices for a sliding and lifting operation
DE102006041673A1 (en) 2006-02-20 2007-08-23 Robert Bosch Gmbh High pressure pump especially for fuel injection in IC engine has the cam follower supported axially by hardened low wear surfaces

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013010627A1 (en) * 2011-07-15 2013-01-24 Deutz Aktiengesellschaft Roller tappet pump unit
CN102588239A (en) * 2012-02-29 2012-07-18 太仓市金鹿电镀有限公司 Hydraulic pump
GB2583076A (en) * 2019-04-08 2020-10-21 Delphi Tech Ip Ltd Fuel pump assembly
GB2583076B (en) * 2019-04-08 2021-12-22 Delphi Tech Ip Ltd Fuel pump plunger return spring arrangement
CN110821774A (en) * 2019-11-29 2020-02-21 江苏科技大学 Cam slider type plunger pump
CN110821774B (en) * 2019-11-29 2021-03-02 江苏科技大学 Cam slider type plunger pump

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