EP2870325A1 - STÖßEL - Google Patents
STÖßELInfo
- Publication number
- EP2870325A1 EP2870325A1 EP13726156.6A EP13726156A EP2870325A1 EP 2870325 A1 EP2870325 A1 EP 2870325A1 EP 13726156 A EP13726156 A EP 13726156A EP 2870325 A1 EP2870325 A1 EP 2870325A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- housing
- bridge piece
- plunger
- projection
- side annular
- 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
- 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
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
- F01L1/12—Transmitting gear between valve drive and valve
- F01L1/14—Tappets; Push rods
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L2307/00—Preventing the rotation of tappets
Definitions
- the invention relates to a plunger, in particular for a pump or a compressor, with a tube-like housing, in the drive-side annular end are two diametrically opposed by an outer shell of the housing flax, in which a roll carrying a bolt is mounted, wherein an inner sheath of Housing axially below the roller is penetrated by a separate bridge piece, whose lower end acts on a driven side annular end of the housing as a plant for a ram follower part and wherein the bridge piece is nadofixfixiert about an axial line of the housing.
- a plunger here for acting on a pump piston of a high-pressure fuel pump of an internal combustion engine, it is apparent from DE 10 2010 022 318 A1.
- the resulting disc-like bridge piece is comparatively thin and thus no longer able to cope with the high loads of today's high-pressure fuel pumps.
- a significantly thicker executed disc-like bridge piece would not be able to mount and increase the plunger mass inadmissible.
- the bridge piece which almost radially fills the ram, permits only a comparatively poor passage of the medium, thus, for example, of diesel oil when the ram is used in a high-pressure fuel pump of a quality-controlled internal combustion engine.
- An anti-rotation about the ram axis undergoes the bridge piece also insufficient on one-sided engagement of a nose by an exemption of the housing.
- the object of the invention is therefore to provide a plunger without the disadvantages mentioned above, which in particular has grown high loads, easy to build and has a securely attached ram successor part contact.
- this object is achieved in that the bridge piece is shown as a thick-walled longitudinal beam, so that between the longitudinal walls and the inner shell of the housing a cylinder-segment-like surface remains, wherein, to the Vercardfix ist of the bridge piece to the Axialli- never the housing, in the peripheral portion of the inner shell of the housing, at a first transverse wall of the bridge piece, protrudes from one of the components at least one projection, which sits in a respective complementary recess of the respective other of the components.
- the bridge piece has by the plunger interior only partially filling bar design only a comparatively small mass with excellent load capacity.
- a use of the plunger in a highly loaded fuel injection pump is nothing in the way.
- the cylinder-segment-like free spaces remaining on the side of the bridging piece permit a sufficiently large passage of lubricant or diesel fuel (depending on the application of the plunger) in both axial directions or prevent, depending on the application, an unnecessary “pumping" of air during the oscillating movement of the plunger Bridge piece can be punched from a board or cut / hooked from an extruded profile or be made of cast material.
- a projection projects radially from the inner casing of the housing, which projection engages with a complementary recess on a transverse wall of the bridge piece.
- the at least one (first) projection can also start from the first transverse wall of the bridge piece and be accommodated in a complementary recess, a shoulder or a window in the inner jacket of the housing.
- At least one transverse wall of the bridge piece for example the first transverse wall, is designed flush, the assembly of the bridge piece is facilitated, whereby a media passage is thus made possible in this area as well.
- the inner casing of the housing to represent a securing ring, for example, in an annular groove or on projecting noses, on which the bridge piece in the direction of the output-side annular end is simply held.
- a simple captive for the bridge piece is shown.
- its axial travel in the housing is generally limited.
- the bridge piece can slightly axially and radially run in the housing, so that a simple tolerance compensation is given. However, it is also intended to hold this immobile in the housing.
- the respective approach can, for example, be present as a simple material gate of the upper annular wall of the housing. On separate axial fixings for the bolt can thus be dispensed with.
- the proposed tappet should be used for at least indirectly acting on a pump piston of a fuel injection pump of a quality- or quantity-controlled internal combustion engine use. Likewise, use in a valve train of an internal combustion engine or in an axial or radial piston compressor or a respective pump is considered. The invention will be explained with reference to the drawing:
- FIG. 1 shows a three-dimensional view of the plunger from below with a first variant of a VerFDfix ist the bridge piece;
- FIG. 2 shows a cross section through the plunger according to FIG. 1 at the level of the bridge piece;
- FIG. 3 shows the plunger according to FIG. 1 with an alternative rotational fixing
- FIG. 4 shows the cross section to FIG. 3
- FIG. 5 shows a longitudinal section through the erected ram according to FIG. 3, longitudinally through the bridge piece and
- FIG. 6 shows a view similar to FIG. 3, with a securing ring as axial fixing for the bridge piece.
- a ram 1 for a high-pressure fuel pump forth This has a tube-like housing 2 made of sheet steel.
- two flanges 5 engaged by an outer jacket 4 of the housing 2 lie diametrically opposite each other.
- a roller, not shown, is received via a pin bearing bearing pin 7.
- An inner jacket 8 of the housing 2 is projected axially below the roller from a bridge piece 9 present as a longitudinal beam.
- a bridge piece 9 present as a longitudinal beam.
- a lower end 10 of the bridge piece 9 at a driven-side annular end 1 1 of the housing 2 acts as a plant for a pump piston as a follower part.
- the bridge piece 9 is rotationally fixed about an axial line of the housing 2.
- two protrusions 15 project from the inner casing 8 of the housing 2 in a first, almost plane transverse wall 14 of the bridge piece 9 in one piece, which lie in complementary recesses 16 in the edge region 20 of the transverse wall 14.
- the projections 15 are formed as emanating from the outer jacket 4 of the housing 2 material indentations.
- the bridge piece 9 in the region of its second transverse wall 17 has a nose 18, which is guided by an exemption 19 of the housing 2.
- this one-piece tailed nose 18 of the ram undergoes a rotational security against his leadership.
- the nose 18 serves for a further rotational fixing of the bridge piece 9 about the axial line of the housing 2.
- Figures 3 - 5 reveal an alternative support for the bridge piece 9 in the circumferential direction.
- the first transverse wall 14 of the bridge piece 9 only a central recess 16, in which a respective projection 15 of the housing 2 is seated.
- the respective recess 15 can also be provided with a step-like shoulder, so that the bridge piece 9 is prevented from falling out of the plunger interior.
- a retaining ring 22 is applied to the inner shell 8 of the housing 2, on which the bridge piece 9 is held at the transverse walls 14, 17. In the direction of the drive-side annular end face 3 of the housing 2, the bridge piece 9 abuts on undersides 21 of the indented flax 5.
- one projection 24 protrudes radially in one piece at the flats 5, on which lugs 24 the bolt 7 is axially delimited.
- the projection 24 is present as a simple material gate.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102012211852.7A DE102012211852A1 (de) | 2012-07-06 | 2012-07-06 | Stößel |
| PCT/EP2013/060714 WO2014005764A1 (de) | 2012-07-06 | 2013-05-24 | STÖßEL |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP2870325A1 true EP2870325A1 (de) | 2015-05-13 |
| EP2870325B1 EP2870325B1 (de) | 2016-04-27 |
Family
ID=48539121
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP13726156.6A Active EP2870325B1 (de) | 2012-07-06 | 2013-05-24 | STÖßEL |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US9938945B2 (de) |
| EP (1) | EP2870325B1 (de) |
| DE (1) | DE102012211852A1 (de) |
| IN (1) | IN2014DN10176A (de) |
| WO (1) | WO2014005764A1 (de) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102013201335A1 (de) * | 2013-01-29 | 2014-07-31 | Schaeffler Technologies Gmbh & Co. Kg | Stößel |
| EP3026232B1 (de) * | 2014-11-27 | 2020-01-08 | Aktiebolaget SKF | Mechanisches System zur Formung eines Kurvenrollers oder eines Kipphebels, Einspritzpumpe oder Ventilstellglied mit solch einem mechanischen System und Verfahren zur Herstellung solch eines mechanischen Systems |
| JP6411275B2 (ja) * | 2015-04-10 | 2018-10-24 | 株式会社オティックス | リフタの回り止め構造 |
| US10082050B2 (en) * | 2015-09-16 | 2018-09-25 | Eaton Intelligent Power Limited | Anti-rotation device for lifter |
| WO2017181002A2 (en) * | 2016-04-15 | 2017-10-19 | Koyo Bearings North America Llc | Tappet with inner cup received on pallet |
| JP6954011B2 (ja) * | 2017-11-02 | 2021-10-27 | 株式会社デンソー | 燃料ポンプのタペット |
| DE102019102289B3 (de) * | 2019-01-30 | 2020-03-05 | Schaeffler Technologies AG & Co. KG | Rollenstößel für eine Kraftstoffpumpe |
| DE102020104313B3 (de) * | 2020-02-19 | 2021-01-28 | Schaeffler Technologies AG & Co. KG | Stößel zur Beaufschlagung eines Pumpenkolbens einer Kraftstoffhochdruckpumpe |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7793583B2 (en) | 2006-12-06 | 2010-09-14 | Schaeffler Kg | Mechanical tappet in particular for a fuel pump of an internal combustion engine |
| DE102009013131A1 (de) * | 2009-03-13 | 2010-09-16 | Schaeffler Technologies Gmbh & Co. Kg | Als Nocken- oder Exzenterfolger ausgebildetes Bauteil |
| DE102009013132A1 (de) * | 2009-03-13 | 2010-09-16 | Schaeffler Technologies Gmbh & Co. Kg | Stössel |
| DE102009056306A1 (de) | 2009-11-30 | 2011-06-01 | Schaeffler Technologies Gmbh & Co. Kg | Rollenstößel |
| DE102010022319A1 (de) * | 2010-06-01 | 2011-12-01 | Schaeffler Technologies Gmbh & Co. Kg | Baueinheit |
| DE102010022318B4 (de) | 2010-06-01 | 2017-09-07 | Schaeffler Technologies AG & Co. KG | Rollenstößel |
-
2012
- 2012-07-06 DE DE102012211852.7A patent/DE102012211852A1/de not_active Withdrawn
-
2013
- 2013-05-24 US US14/413,130 patent/US9938945B2/en active Active
- 2013-05-24 EP EP13726156.6A patent/EP2870325B1/de active Active
- 2013-05-24 WO PCT/EP2013/060714 patent/WO2014005764A1/de not_active Ceased
- 2013-05-24 IN IN10176DEN2014 patent/IN2014DN10176A/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| IN2014DN10176A (de) | 2015-08-21 |
| US20150159610A1 (en) | 2015-06-11 |
| WO2014005764A1 (de) | 2014-01-09 |
| EP2870325B1 (de) | 2016-04-27 |
| US9938945B2 (en) | 2018-04-10 |
| DE102012211852A1 (de) | 2014-01-09 |
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