EP3585998A1 - ROLLENSTÖßEL - Google Patents
ROLLENSTÖßELInfo
- Publication number
- EP3585998A1 EP3585998A1 EP18702907.9A EP18702907A EP3585998A1 EP 3585998 A1 EP3585998 A1 EP 3585998A1 EP 18702907 A EP18702907 A EP 18702907A EP 3585998 A1 EP3585998 A1 EP 3585998A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- housing
- roller
- discs
- bridge piece
- roller tappet
- 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- Withdrawn
Links
- 239000000446 fuel Substances 0.000 claims abstract description 6
- 238000002485 combustion reaction Methods 0.000 claims abstract description 4
- 239000010410 layer Substances 0.000 claims description 3
- 230000000737 periodic effect Effects 0.000 claims description 2
- 239000002347 wear-protection layer Substances 0.000 claims description 2
- 239000000463 material Substances 0.000 claims 1
- 239000002283 diesel fuel Substances 0.000 description 2
- 210000001061 forehead Anatomy 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000004049 embossing Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000003860 storage 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
- F02M59/44—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
- F02M59/48—Assembling; Disassembling; Replacing
-
- 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
-
- 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
- F04B1/0408—Pistons
-
- 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
- F04B1/0426—Arrangements for pressing the pistons against the actuated cam; Arrangements for connecting the pistons to the actuated cam
-
- 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
- F04B1/0439—Supporting or guiding means for the pistons
-
- 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
- F04B1/053—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement with actuating or actuated elements at the inner ends of the cylinders
-
- 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
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/14—Pistons, piston-rods or piston-rod connections
-
- 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
- F04B9/042—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 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
- F01L1/143—Tappets; Push rods for use with overhead camshafts
Definitions
- the invention relates to a roller tappet, in particular for a high-pressure fuel pump or for a valve train of an internal combustion engine, with a housing which has at its drive-side end a loose role for a periodic Huber Weger which runs in a one piece to a bridge piece shell, which bridge piece the housing, connected in one piece therewith, protrudes through and in the direction of a driven-side end of the housing has a contact for a follower part and wherein the plunger has at least one separately joined Anlaufmit- tel for end faces of the roller.
- a generic roller tappet here for a high-pressure fuel pump, is shown in DE 10 2012 212 579 A1, Fig. 1 A, 1 B out.
- a snap ring is shown, which surrounds the roller directly on the front side and sits in an annular groove of the housing. The roller thus runs directly on a comparatively narrow inner shell of the snap ring.
- FIGS. 1, 2 of DE 10 2006 028 348 B3 Another roller tappet with an immediate axial snap ring for its role is shown in FIGS. 1, 2 of DE 10 2006 028 348 B3.
- the wire-like securing component is seated in a circumferential groove on the inner casing of the housing of the tappet. End sides of the roller run to the axial securing this in turn on the inside of the ring wire.
- DE 10 2012 222 217 A1 discloses a roller tappet, from the cam-side bottom of which two opposite semicircle-like clips for axial fixing of the roller extend. From DE 10 201 1 083 571 A1 a built-up roller tappet can be removed whose roller is mounted in a pocket of a separate bottom, on which a retaining element is still pressed. Axially, the role is fixed by transverse walls of the support element.
- DE 2 361 679 A shows a pump piston arrangement with a counter-rotating roller seated in a housing.
- a voltage applied to a cam-distal bottom retaining clip engages an outer jacket of the plunger with two parallel axial fingers. Free ends of these fingers secure the role axially.
- DE 10 2006 041 673 A1 discloses a roller tappet in a high-pressure pump with a roller running counter to an eccentric. The latter sits in a support pocket of the housing. In the contact area, special wear protection measures are provided.
- roller tappet according to DE 10 2009 056 303 A1.
- a lateral start-up for the roll takes place on specially prepared inner shell sections of a shirt of the housing.
- the shell may skew during operation, must be kept separate and, in the worst case, may affect the roller's track.
- the frontal start-up of the role on the housing designed as a manufacturing technology comparatively difficult.
- this object is achieved in that two discs seated in recesses of a shirt of the housing are applied as starting means, against the insides of which the roller runs with its end faces, which discs are flush or indented to an outer jacket of the shirt of the housing arranged and fixed in position over at least one housing in a respectful annular groove whose outer sheath spanning circlip / snap ring, which also sits in a slot of the respective disc.
- a simple holder for the discs is carried out according to the invention at the same time via at least one ring such as a snap ring in a corresponding annular groove of the housing.
- the ring in turn sits in a slot-like groove of the respective disc, this fixing, a.
- the discs can also be screwed, caulked, glued, soldered or welded.
- the bridge piece extends directly from the upper, drive-side edge of the housing, so that a fine machining of the shell (grinding, finishing such as polishing, etc.) proves to be comparatively simple.
- the further proposed axial passages in the bridge piece which may be hole-like, prevent "pumping" of the plunger during operation and in particular allow unimpeded passage of lubricant such as oil or fuel.
- FIG. 1 shows an overall view of the plunger
- FIGS. 2, 3 show longitudinal sections through the plunger, rotated by 90 ° with respect to one another and
- FIG. 1 shows an overall view of the plunger
- a roller tappet 1 for a high-pressure fuel pump of a quality-controlled internal combustion engine has a housing 2, which is penetrated at its drive-side end 3 of an integrally connected bridge piece 5.
- a shell 18 is formed, in which a bolt-free roller 4 is seated rotatably for a lifting cam.
- the bridge piece 5 In the direction of a driven-side end 6 of the housing 2, thus on a lower side, the bridge piece 5 has a dome-like offset system 7 for a pump piston as a follower part.
- End faces 9 of the roller 4 run on inner sides 1 1 of separate discs 8 at. These sit in half-shell-like, upwardly open recesses 19 of a shirt 10 of the housing. 2
- the discs 8 are flush with an outer jacket 12 of the shirt 10.
- the two discs 8 are held by a snap ring 14, which is seated in slots 15 and in an annular groove 13 of the housing 2 is held.
- the bridge piece 5 has two opposite to the roller 4 axial passages 16 for diesel fuel / oil. List of Reference Numbers) Roller Plunger
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 |
|---|---|---|---|
| DE102017103483.8A DE102017103483B3 (de) | 2017-02-21 | 2017-02-21 | Rollenstößel |
| PCT/DE2018/100035 WO2018153396A1 (de) | 2017-02-21 | 2018-01-17 | ROLLENSTÖßEL |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP3585998A1 true EP3585998A1 (de) | 2020-01-01 |
Family
ID=60662669
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP18702907.9A Withdrawn EP3585998A1 (de) | 2017-02-21 | 2018-01-17 | ROLLENSTÖßEL |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP3585998A1 (de) |
| CN (1) | CN110312862B (de) |
| DE (1) | DE102017103483B3 (de) |
| WO (1) | WO2018153396A1 (de) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111749826A (zh) * | 2019-03-26 | 2020-10-09 | 罗伯特·博世有限公司 | 用于高压燃料泵的滚子挺杆 |
| EP4055267A4 (de) * | 2019-12-19 | 2023-08-02 | Cummins, Inc. | Stössel-rollenanordnung |
| CN112576469B (zh) * | 2020-11-16 | 2022-12-16 | 中国航发西安动力控制科技有限公司 | 内曲线径向柱塞马达的柱塞滚柱 |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4943674B1 (de) * | 1969-08-12 | 1974-11-22 | ||
| US3822683A (en) * | 1972-12-11 | 1974-07-09 | Caterpillar Tractor Co | Roller bearing retaining clip |
| DE102006041673A1 (de) * | 2006-02-20 | 2007-08-23 | Robert Bosch Gmbh | Hochdruckpumpe, insbesondere für eine Kraftstoffeinspritzeinrichtung einer Brennkraftmaschine |
| DE102006028348B3 (de) * | 2006-06-20 | 2007-10-31 | Siemens Ag | Rollenlagerungsvorrichtung |
| DE102008000710A1 (de) * | 2008-03-17 | 2009-09-24 | Robert Bosch Gmbh | Hochdruckpumpe |
| DE102008017824A1 (de) * | 2008-04-08 | 2009-10-15 | Continental Automotive Gmbh | Stößelbaugruppe für eine Hochdruckpumpe und Hochdruckpumpe |
| DE102009056303A1 (de) * | 2009-11-30 | 2011-06-01 | Schaeffler Technologies Gmbh & Co. Kg | Rollenstößel |
| JP2011163253A (ja) * | 2010-02-12 | 2011-08-25 | Ntn Corp | ポンプ用タペット |
| DE102010026362A1 (de) * | 2010-07-07 | 2012-01-12 | Schaeffler Technologies Gmbh & Co. Kg | Rollenstößel |
| DE102011083571A1 (de) * | 2011-09-28 | 2013-03-28 | Robert Bosch Gmbh | Stößelbaugruppe für eine Kraftstoffhochdruckpumpe sowie Kraftstoffhochdruckpumpe |
| DE102012212579B4 (de) * | 2012-07-18 | 2018-11-22 | Continental Automotive Gmbh | Rollenstößelanordnung für eine Radialkolbenpumpe mit zwei Sicherungselementen für die Laufrolle des Rollenstößels |
| DE102012222217A1 (de) * | 2012-12-04 | 2014-06-05 | Continental Automotive Gmbh | Rollenstößel |
-
2017
- 2017-02-21 DE DE102017103483.8A patent/DE102017103483B3/de active Active
-
2018
- 2018-01-17 WO PCT/DE2018/100035 patent/WO2018153396A1/de not_active Ceased
- 2018-01-17 CN CN201880011696.4A patent/CN110312862B/zh active Active
- 2018-01-17 EP EP18702907.9A patent/EP3585998A1/de not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| CN110312862B (zh) | 2021-08-06 |
| CN110312862A (zh) | 2019-10-08 |
| DE102017103483B3 (de) | 2018-01-04 |
| WO2018153396A1 (de) | 2018-08-30 |
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Legal Events
| Date | Code | Title | Description |
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| STAA | Information on the status of an ep patent application or granted ep patent |
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| STAA | Information on the status of an ep patent application or granted ep patent |
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| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
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| STAA | Information on the status of an ep patent application or granted ep patent |
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| 17P | Request for examination filed |
Effective date: 20190923 |
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| AK | Designated contracting states |
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| AX | Request for extension of the european patent |
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| DAV | Request for validation of the european patent (deleted) | ||
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| INTG | Intention to grant announced |
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| STAA | Information on the status of an ep patent application or granted ep patent |
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| 18D | Application deemed to be withdrawn |
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| P01 | Opt-out of the competence of the unified patent court (upc) registered |
Effective date: 20230522 |