EP2951435A1 - Stössel - Google Patents
StösselInfo
- Publication number
- EP2951435A1 EP2951435A1 EP13823929.8A EP13823929A EP2951435A1 EP 2951435 A1 EP2951435 A1 EP 2951435A1 EP 13823929 A EP13823929 A EP 13823929A EP 2951435 A1 EP2951435 A1 EP 2951435A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- housing
- bridge piece
- plunger
- ring
- output
- 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
- 230000000295 complement effect Effects 0.000 claims abstract description 5
- 241000208202 Linaceae Species 0.000 claims description 9
- 235000004431 Linum usitatissimum Nutrition 0.000 claims description 9
- 239000002184 metal Substances 0.000 claims description 4
- 210000001061 forehead Anatomy 0.000 claims description 3
- 210000000887 face Anatomy 0.000 claims 1
- 239000000446 fuel Substances 0.000 abstract description 6
- 238000002347 injection Methods 0.000 abstract description 3
- 239000007924 injection Substances 0.000 abstract description 3
- 210000001331 nose Anatomy 0.000 description 7
- 238000002485 combustion reaction Methods 0.000 description 2
- 239000002283 diesel fuel Substances 0.000 description 2
- 239000000314 lubricant Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 241000196324 Embryophyta Species 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000010959 steel Substances 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
- 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
- F04B1/0435—Arrangements for disconnecting the pistons from 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
Definitions
- the invention relates to a plunger, in particular for a pump or a compressor, with a tube-like housing, in whose 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 shell of the Housing, axially below the roller, is penetrated by a separate bridge piece whose output side end acts as a plant for a follower part and which bridge piece in the direction of the drive side annular end abuts the underside of the flax and fixed in the direction of a driven side annular end of the housing by a on the inner shell Ring is held.
- Such a plunger is apparent from DE 10201221 1 1 13.1. It is suitable for acting on a pump piston of a fuel injection pump. As can be seen from Figure 1, a holder of the bridge piece takes place axially out of the housing via a snap ring, which is held on the housing radially projecting lugs.
- the disadvantage is that an assembly of the bridge piece on the drive-side annular end must be very targeted and accurate, so as not to come into collision with the noses. Furthermore, limited by the projecting components (lugs, snap ring) of the radial space in the lower housing area, so that under certain circumstances not enough space for a on the output side end of the bridge piece supporting return spring o. The like. Is given.
- the noses also weaken the case. Possibly. it comes in their area to distortion on the outer surface of the housing.
- the plunger should be easy to assemble and an enlarged space below its bridge piece have.
- the ring is a broken spring band and in a complementary groove of the inner shell of the housing, in this radially not or only slightly protruding from the groove, sitting, from a top of the ring at least two tabs radially inwardly stand out on soft the bridge piece is fixed in the direction of the output side annular end.
- the ring is intended for a sheet metal or plastic ring. Possibly. can be applied in the separating gap and a spring spreading the ring spring means.
- the space below the bridge piece thus in the direction of the output side annular end of the housing, is designed so that no noses o. The like. More radially extend from the inner surface of the housing. However, necessary chamfers are not covered.
- the bridge piece can first be fed relatively freely to the housing (i.i., head-over-assembly) until its twist orientation becomes necessary for engagement with the bottoms of the flax. It is more important in this context, however, that the unrestricted space larger return springs can be installed so that higher forces / speeds are possible.
- a preferred development of the invention relates to a plunger, which is connected to a pump piston via a spring plate.
- a plunger which is connected to a pump piston via a spring plate.
- the tabs of the ring advantageously in a complementary annular recess of a ring portion of the spring plate. The latter holds the ring during operation of the ram.
- the spring plate from its outer edge outgoing breakthroughs. These allow a good passage of, for example, diesel fuel / lubricant or prevent a "pumping" of the plunger.
- the breakthroughs can also outside the Be introduced outside. In addition, you help to save ram mass.
- Punched bridge piece allows passage to eg. Diesel fuel / lubricant side of the bridge piece along and good handling and easy assembly of the bridge piece in mass production.
- a nose of the bridge piece protrude from a crosspiece, which may alternatively also be present as a separate component.
- the nose is guided through an example. Stamped opening of the housing, so that the plunger has a simple design and captive anti-rotation.
- the bridge piece is available as a multifunction part.
- Crossstones of the bridge piece have according to the claims a smoothened to the inner surface of the housing course, which comes to a simple assembly and helps to avoid edge contact compared to a bow-like design.
- the bridge piece as sheet metal stamping with a comparatively large thickness. This measure helps to keep manufacturing costs low. Possibly.
- the bridge piece can also be flared or urgeformt.
- 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.
- a valve train of an internal combustion engine in an axial or radial piston compressor or in a respective pump is considered.
- FIG. 1 shows a longitudinal section through a ram assembly
- Figure 2 shows a longitudinal section as mentioned above, but rotated by 90 ° about the axial line;
- FIG. 3 shows a bottom view according to FIG. 2;
- FIG. 4 shows an enlarged partial view of the unit according to FIG. 1 in the section of the bridge piece
- Figure 5 shows a three-dimensional view of the ring with tabs
- Figure 6 shows a three-dimensional view of the housing of the plunger from below
- FIG. 7 shows the plunger according to FIG. 6 in the assembled state.
- a plunger 1 for a high-pressure fuel pump This consists (see Fig. 1, 2, 6, 7) of a thin-walled housing 2 made of sheet steel.
- a drive-side annular end face 3 of the housing 2 two flanges 5, which are engaged by an outer jacket 4 of the housing 2, lie diametrically opposite one another, which can be clearly seen in FIG.
- a roller 6 bearing bolt 7 In the flax 5 a roller 6 bearing bolt 7 is mounted.
- An inner jacket 8 of the housing 2 is projected axially below the roller 6 from a separate bar-like bridge piece 9 (see FIGS. 1, 2, 7), with its output side end 10 in contact with a ram follower part 1 1 designed as a pump piston.
- the bridge piece 9 lies in the direction of the drive-side annular end face 3 on lower sides 12 of the flax 5 (see FIGS. 1, 7).
- a driven-side annular end 13 of the housing 2 whose play-free mounting is effected by a ring 14 fixed to the inner casing 8 (see also Fig. 5), which is a broken spring band.
- the ring 14 is seated in a circumferential groove 15 of the inner shell 8 of the housing 2 and does not protrude into the plunger interior.
- pump piston 1 1 is held by a spring plate 18 made of sheet metal on the output-side end 10 of the bridge piece 9 so that the pump piston 1 1 relative to the plunger 1 can perform a lateral evasive movement.
- the spring plate 18 rests against the output-side end 10 of the bridge piece 9 with a ring region 20 extending from its outer edge 19 (see FIG. 4).
- the aforementioned bent tabs 17 sit in a ring recess 20 in a top 21 of the annular portion 20 of the spring plate 18th
- Figure 3 also shows that the spring plate 18, starting from the outer edge 22, provided with openings 23 for a media passage (oil, fuel).
- a media passage oil, fuel
- Fig. 7 protrudes from a cross-beam 24 of the bridge piece 9, a nose 25 away.
- This extends through a shirt recess 27 in the housing 2 and serves to prevent rotation of the plunger 1 with respect to its leadership in the fuel pump.
- the shirt recess 27 is based on an upper crossbar 28 of a window 29 in the housing 2, which window 29 is formed by one of the indented flax 5 in the housing 2.
- Both transverse stems 24, 26 of the bridge piece 9 are, as can be seen from Figure 7, with a radius of the inner jacket 8 of the housing 2 provided similar radius and extend immediately in front of the inner shell 8 of the housing. 2
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 |
---|---|---|---|
DE102013201335.3A DE102013201335A1 (de) | 2013-01-29 | 2013-01-29 | Stößel |
PCT/DE2013/200304 WO2014117762A1 (de) | 2013-01-29 | 2013-11-18 | Stössel |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2951435A1 true EP2951435A1 (de) | 2015-12-09 |
EP2951435B1 EP2951435B1 (de) | 2017-02-01 |
Family
ID=49999654
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP13823929.8A Not-in-force EP2951435B1 (de) | 2013-01-29 | 2013-11-18 | Stössel |
Country Status (4)
Country | Link |
---|---|
US (1) | US9410518B2 (de) |
EP (1) | EP2951435B1 (de) |
DE (1) | DE102013201335A1 (de) |
WO (1) | WO2014117762A1 (de) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3173590B1 (de) * | 2015-11-24 | 2018-06-20 | Aktiebolaget SKF | Nockenfolgerrollenvorrichtung mit unterlegscheibe |
CN109154211B (zh) * | 2016-04-15 | 2021-10-15 | 光洋轴承北美有限责任公司 | 具有接收在托板上的内杯的从动件 |
JP7022380B2 (ja) * | 2018-01-31 | 2022-02-18 | いすゞ自動車株式会社 | 燃料ポンプ組付構造 |
US11149593B2 (en) | 2019-10-03 | 2021-10-19 | Koyo Bearings North America Llc | Tappet assembly with formed anti-rotation alignment device |
US11143059B2 (en) | 2019-10-03 | 2021-10-12 | Koyo Bearings North America Llc | Tappet assembly with unground outer cup |
DE102020104313B3 (de) | 2020-02-19 | 2021-01-28 | Schaeffler Technologies AG & Co. KG | Stößel zur Beaufschlagung eines Pumpenkolbens einer Kraftstoffhochdruckpumpe |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102006028348B3 (de) * | 2006-06-20 | 2007-10-31 | Siemens Ag | Rollenlagerungsvorrichtung |
JP5303468B2 (ja) | 2006-12-05 | 2013-10-02 | シャエフラー カーゲー | 特に内燃機関の燃料ポンプのためのメカニカルタペット |
US7793583B2 (en) | 2006-12-06 | 2010-09-14 | Schaeffler Kg | Mechanical tappet in particular for a fuel pump of an internal combustion engine |
DE102006059716A1 (de) * | 2006-12-18 | 2008-06-26 | Mahle International Gmbh | Verdrehgesicherter Stößel eines Ventiltriebes |
DE102012202568B4 (de) * | 2012-02-20 | 2021-12-23 | Schaeffler Technologies AG & Co. KG | Rollenstößel mit Halterungen für einen gestuften Bolzen |
DE102012210176A1 (de) * | 2012-06-18 | 2013-12-19 | Schaeffler Technologies AG & Co. KG | Stößel |
DE102012211113A1 (de) | 2012-06-28 | 2014-01-02 | Schaeffler Technologies AG & Co. KG | Stößel |
DE102012211529A1 (de) * | 2012-07-03 | 2014-01-09 | Schaeffler Technologies AG & Co. KG | Anordnung mit einem Federteller zur Abstützung zumindest einer Rückstellfeder |
DE102012211852A1 (de) * | 2012-07-06 | 2014-01-09 | Schaeffler Technologies AG & Co. KG | Stößel |
-
2013
- 2013-01-29 DE DE102013201335.3A patent/DE102013201335A1/de not_active Withdrawn
- 2013-11-18 EP EP13823929.8A patent/EP2951435B1/de not_active Not-in-force
- 2013-11-18 WO PCT/DE2013/200304 patent/WO2014117762A1/de active Application Filing
- 2013-11-18 US US14/763,688 patent/US9410518B2/en not_active Expired - Fee Related
Non-Patent Citations (1)
Title |
---|
See references of WO2014117762A1 * |
Also Published As
Publication number | Publication date |
---|---|
DE102013201335A1 (de) | 2014-07-31 |
EP2951435B1 (de) | 2017-02-01 |
WO2014117762A1 (de) | 2014-08-07 |
US20150361937A1 (en) | 2015-12-17 |
US9410518B2 (en) | 2016-08-09 |
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