EP2771565A1 - ROLLENSTÖßEL - Google Patents
ROLLENSTÖßELInfo
- Publication number
- EP2771565A1 EP2771565A1 EP12741019.9A EP12741019A EP2771565A1 EP 2771565 A1 EP2771565 A1 EP 2771565A1 EP 12741019 A EP12741019 A EP 12741019A EP 2771565 A1 EP2771565 A1 EP 2771565A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- roller
- housing
- roller tappet
- drive
- side end
- 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
- 239000000446 fuel Substances 0.000 claims abstract description 5
- 238000002485 combustion reaction Methods 0.000 claims abstract description 3
- 230000000737 periodic effect Effects 0.000 claims abstract description 3
- 230000007704 transition Effects 0.000 claims description 4
- 230000002093 peripheral effect Effects 0.000 claims description 2
- 238000007373 indentation Methods 0.000 claims 1
- 210000001061 forehead Anatomy 0.000 description 6
- 241000208202 Linaceae Species 0.000 description 3
- 235000004431 Linum usitatissimum Nutrition 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000002283 diesel fuel Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
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
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
- F04B1/04—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement
- F04B1/0404—Details or component parts
- F04B1/0413—Cams
- F04B1/0417—Cams consisting of two or more cylindrical elements, e.g. rollers
-
- 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
- F01L2305/00—Valve arrangements comprising rollers
- F01L2305/02—Mounting of rollers
Definitions
- Roller tappet proposed is a roller tappet with a housing which has at its drive-side end of a startup of a periodic Huber Wegers role that extends at least indirectly in an upper side of an inner shell of the housing projecting bridge piece, wherein a bottom of the bridge piece, at a driven side Forehead of the roller tappet, a system for a ram following part has and emanating from the housing, the role in this locking holding means.
- roller tappet here for a high-pressure fuel pump, is described in DE 10 2009 056 306 A1.
- Its roller extends according to the variant according to FIGS. 1, 2 on the face side on the flax of the housing and undergoes a mounting in the latter on inner side protruding, knob-like projections.
- This backup of the role in the ram is necessary for installation and transport of the roller tappet, but also in operation.
- the guide region of the outer casing of the housing is weakened by the formation of the flax and that during the shaping process of the flax an unfavorable dimensional influencing of the remaining cylindrical outer casing region of the plunger can occur.
- the formation of the knobs as stops for the role as comparatively expensive. Thus, for example, in this area must be embossed, put through or extruded.
- this object is achieved in that on the drive-side end, at least in the peripheral portion of the outer end of the roller, an annular collar protrudes as a holding means, against the underside of the role of the Housing is secured out, wherein it is particularly preferred that the housing is provided on its outer shell, at least in a circumferential ring portion in the drive-side end, step-free with only one outer diameter.
- the proposed holding means can be one piece from the housing and present as an inwardly flanged end face area.
- the proposed holding means can be one piece from the housing and present as an inwardly flanged end face area.
- the retaining ring as a holding means can be mounted very easily. On the aforementioned knob-like projections can be omitted.
- the outer casing of the housing is all-round smooth-walled, which improves its leadership and sandability. At most, a window, for example. For an anti-rotation, applied in the outer jacket.
- a central stump projects from each outer end of the roller whose diameter is smaller than an outer diameter of the roller.
- the role should lie directly on the underside of the annular collar.
- the role may, as provided in the development of the invention, be directly sliding in a cylinder molding of the top of the bridge piece. However, it is equally proposed to guide the roller in a separate shell element, which also sits slightly movable in the bridge piece.
- roller tappet relates, for example, to high-pressure pumps for diesel fuel with fuel lubrication. Also conceivable is an application in separately oil-lubricated high-pressure pumps for diesel or petrol.
- the roller tappet can be used as a cam follower in a valve train of an internal combustion engine or in an axial piston motor with swash plate drive.
- FIG. 1 shows a three-dimensional view of a roller tappet
- Fig. 2 shows a spatial section of the roller tappet in the region of an outer end whose role
- ⁇ Fig. 3 shows the role with stumps in a spatial representation.
- a roller tappet 1 Shown in Fig. 1 is a roller tappet 1, here for a high-pressure fuel pump.
- the roller tappet 1 has a housing 2, which at its drive-side end 3 has a roller 4 serving for start-up of a periodical hoist generator (cam or eccentric).
- the latter is slidably mounted in a shell piece 10 which is received in a top 5 of an inner jacket 6 of the housing 2 by projecting bridge piece 7.
- a not shown te underside of the bridge piece 7, at a driven-side end 9 of the roller tappet 1, has a system for a ram following part (pump piston) on.
- roller 4 is replaced by securing means 11 (see Fig. 2). These are designed as a separate annular collar and are hereafter as a locking ring which sits in a circumferential groove 16 of the inner shell 6 of the housing 2, in the drive-side end 3.
- the ring collar 1 1 protrudes, as can be seen well in FIGS. 1, 2, over outer foreheads 12 of the roller 4. More specifically, stands of each outer end 12 of the roller 4, a central stump 17 from. About a between the respective stump 17 and an outer shell 8 of the roller 4 formed annular shoulder 18, the roller 4 is located on the underside 13 of the annular collar 1 1 (see also Fig. 2, 3). In this case, the outer spikes 12 of the roller 4 are cone-shaped in the transition region 19 from their outer jacket 8 to the annular shoulder 18.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Fuel-Injection Apparatus (AREA)
- Valve-Gear Or Valve Arrangements (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102011085242A DE102011085242A1 (de) | 2011-10-26 | 2011-10-26 | Rollenstößel |
PCT/EP2012/065128 WO2013060494A1 (de) | 2011-10-26 | 2012-08-02 | ROLLENSTÖßEL |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2771565A1 true EP2771565A1 (de) | 2014-09-03 |
EP2771565B1 EP2771565B1 (de) | 2016-10-12 |
Family
ID=46598563
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP12741019.9A Not-in-force EP2771565B1 (de) | 2011-10-26 | 2012-08-02 | ROLLENSTÖßEL |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP2771565B1 (de) |
CN (1) | CN103917769B (de) |
DE (1) | DE102011085242A1 (de) |
WO (1) | WO2013060494A1 (de) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102014220813B4 (de) * | 2014-10-14 | 2019-12-24 | Continental Automotive Gmbh | Stößelanordnung für eine Rollenstößelpumpe und eine solche aufweisende Rollenstößelpumpe |
DE102017107099B3 (de) | 2017-04-03 | 2018-06-28 | Schaeffler Technologies AG & Co. KG | Mehrteiliger Rollenstößel für eine Kraftstoffhochdruckpumpe |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5566652A (en) * | 1995-10-06 | 1996-10-22 | Eaton Corporation | Light weight cam follower |
IT1279050B1 (it) * | 1995-10-27 | 1997-12-04 | Eaton Automotive Spa | Punteria idraulica ad azione diretta dotata di rullino di contatto con la camma dell'albero a camme di un motore a combustione interna |
DE102006028348B3 (de) * | 2006-06-20 | 2007-10-31 | Siemens Ag | Rollenlagerungsvorrichtung |
DE102009056306A1 (de) | 2009-11-30 | 2011-06-01 | Schaeffler Technologies Gmbh & Co. Kg | Rollenstößel |
DE102009056305A1 (de) * | 2009-11-30 | 2011-06-01 | Schaeffler Technologies Gmbh & Co. Kg | Rollenstößel |
DE102009056303A1 (de) * | 2009-11-30 | 2011-06-01 | Schaeffler Technologies Gmbh & Co. Kg | Rollenstößel |
-
2011
- 2011-10-26 DE DE102011085242A patent/DE102011085242A1/de not_active Withdrawn
-
2012
- 2012-08-02 CN CN201280049658.0A patent/CN103917769B/zh not_active Expired - Fee Related
- 2012-08-02 EP EP12741019.9A patent/EP2771565B1/de not_active Not-in-force
- 2012-08-02 WO PCT/EP2012/065128 patent/WO2013060494A1/de active Application Filing
Non-Patent Citations (1)
Title |
---|
See references of WO2013060494A1 * |
Also Published As
Publication number | Publication date |
---|---|
EP2771565B1 (de) | 2016-10-12 |
CN103917769B (zh) | 2017-05-17 |
DE102011085242A1 (de) | 2013-05-02 |
WO2013060494A1 (de) | 2013-05-02 |
CN103917769A (zh) | 2014-07-09 |
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