EP3396123A1 - Tige pour une commande de soupape d'un moteur à combustion interne - Google Patents

Tige pour une commande de soupape d'un moteur à combustion interne Download PDF

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Publication number
EP3396123A1
EP3396123A1 EP18166360.0A EP18166360A EP3396123A1 EP 3396123 A1 EP3396123 A1 EP 3396123A1 EP 18166360 A EP18166360 A EP 18166360A EP 3396123 A1 EP3396123 A1 EP 3396123A1
Authority
EP
European Patent Office
Prior art keywords
bumper
shaft
rib structure
combustion engine
rib
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
Application number
EP18166360.0A
Other languages
German (de)
English (en)
Other versions
EP3396123B1 (fr
Inventor
Bernd Huneke
Manuel Stenglein
Thomas Schneider
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
MAN Truck and Bus SE
Original Assignee
MAN Truck and Bus SE
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by MAN Truck and Bus SE filed Critical MAN Truck and Bus SE
Publication of EP3396123A1 publication Critical patent/EP3396123A1/fr
Application granted granted Critical
Publication of EP3396123B1 publication Critical patent/EP3396123B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • F01L1/146—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
    • F01L2303/00—Manufacturing of components used in valve arrangements

Definitions

  • the invention relates to a bumper for a valve train of an internal combustion engine.
  • the invention further relates to a valve train of an internal combustion engine, comprising such a bumper, in particular a valve train for an internal combustion engine with a lateral or lower camshaft.
  • the invention further relates to such an internal combustion engine, for.
  • an engine in particular for a vehicle, for.
  • the invention further relates to a vehicle, in particular a motor vehicle, for.
  • a vehicle in particular a motor vehicle, for.
  • a commercial vehicle a watercraft, or a rail vehicle with a bumper or a valve train as described in this document.
  • a bumper for a valve train forms the transfer member in the drive mechanism from the camshaft to the valves. Colloquially, the term push rod is often used for the bumper.
  • the bumper in an internal combustion engine is part of the valve control on engines, especially in engines with side or bottom camshaft.
  • Known bumpers consist of a cylindrical shaft, at the ends of ball heads or ball pans are provided.
  • the AT 005 130 U1 a push rod having a region of maximum cross section, preferably arranged centrally between the ends of the push rod, wherein the bumper consists of a first and a second, substantially hollow rod part; These rod parts each have a maximum cross-section in the region of an open end face, wherein the rod parts are connected to one another at their open end faces (2b, 3b) in an insoluble manner.
  • a bumper in particular for a valve train of an internal combustion engine is provided, whose shaft has a rib structure.
  • a rib structure to increase the buckling stiffness of a defined portion of the bumper, an increase in the buckling resistance of the bumper is achieved compared to a cylindrical design of the shaft of the bumper.
  • a weight reduction can be achieved, which among other things, the valve train dynamics is improved.
  • Another advantage of this bumper design is the use of the bumper even in space-critical areas by the taper of the push rod in less kink-prone areas.
  • the rib structure offers more flexibility, compared to the known from the prior art biconical or "bulbous" design of the shaft with similar buckling resistance more flexibility to adapt the dimensions of the bumper in space critical areas to the prevailing space requirements.
  • the length of the rib structure the number and / or size of the ribs of the rib structure can be adjusted. The distance between the beginning and the end of the ribs can thus be selected appropriately depending on the space in the engine.
  • the rib structure has a plurality of radially projecting ribs extending in the longitudinal direction of the shank.
  • a plurality of at least approximately axially parallel to the central axis of the shaft extending ribs may be provided.
  • the ribs can protrude the same or different distances in the radial direction.
  • An advantageous variant provides that the ribs protrude equally far in the radial direction.
  • the number of ribs of the rib structure may be in the range of three to twelve, more preferably in the range of four to eight.
  • the rib structure is arranged in a region arranged between the ends of the bumper.
  • a preferred embodiment provides that the rib structure is arranged in a central region of the shaft.
  • the rib structure can be arranged only in the middle region, so that no rib structure is arranged at the two opposite ends of the bumper.
  • a possible embodiment provides here that the rib structure is arranged only in a central region of the shaft, which corresponds to at most 2/3, more preferably at most half of a length of the shaft.
  • the bumper to be tapered in a less kink-prone area at the ends of the bumper. This is also advantageous for the arrangement in a space-critical area between the push rod and the cylinder head of the internal combustion engine.
  • the rib structure may be made integral with the stem, which is advantageous for reasons of stability and in terms of the production of the bumper.
  • a thickness of at least one rib of the rib structure in the radial direction away from the shank can decrease at least in sections.
  • a rib of the rib structure may have the shape of a wedge or rectangle in cross-section. Furthermore, a rib of the rib structure may have rounded corners on the radially outer edge of the rib.
  • an outer side of the ribs of the rib structure in cross section may have the shape of a circular section with the radius of the shaft in the region of the rib structure.
  • the radius of the shaft in this area includes the height of the ribs in this area.
  • the two edges extending inwardly from an outside of the ribs may be tapered inwardly to widen.
  • the ends of the shaft of the bumper may be provided with a ball head or a ball socket.
  • the bumper can be made of a conventional construction or tool steel.
  • the bumper and / or the shaft of the bumper may be made as a drawn tube with ribs, the shaft at its two opposite ends is turned free.
  • the bumper and / or the shaft of the bumper may be made as a drawn round material with ribs and be turned free at the ends of the shaft.
  • the bumper and / or the shaft can also be forged as a round material or formed as a round material.
  • the rib structure may leak straight or "bulbous" on the shaft.
  • the rib structure can be designed with or without bevel.
  • the invention further relates to a valve train of an internal combustion engine, comprising a bumper as described in this document, in particular a valve train for an internal combustion engine with lateral or lower camshaft.
  • the invention further relates to such an internal combustion engine, for.
  • an engine in particular for a vehicle, for.
  • a motor vehicle, commercial vehicle, watercraft, rail vehicle or power generation comprising a bumper as described in this document.
  • the invention further relates to a vehicle, in particular a motor vehicle, for.
  • a vehicle in particular a motor vehicle, for.
  • a commercial vehicle a watercraft, or a rail vehicle with a bumper or a valve train as described in this document.
  • FIG. 1 shows a bumper 1 according to an embodiment of the invention.
  • the bumper 1 can be used in a valve train for an internal combustion engine and in this case form the transmission member in the drive mechanism of the side or bottom camshaft to the gas exchange valves. Colloquially, the term push rod is often used for the bumper.
  • the bumper 1 comprises a shaft 2, at the ends of a ball head 6 or a ball socket 5 are provided.
  • a middle region 2b of the shaft 2 has a rib structure 3.
  • the rib structure 3 is formed by a plurality of radially projecting, extending in the longitudinal direction L of the shaft 2 ribs 4, wherein the rib structure 3 is integral with the shaft 2.
  • the longitudinal direction here corresponds to the longitudinal axis L of the shaft 2.
  • a radial direction is perpendicular to the longitudinal axis L.
  • the two opposite end portions 2a of the shaft 2 follow, which are cylindrical.
  • the rib structure 3 is also in FIG. 2 shown having a cross section along BB in FIG. 1 shows.
  • the rib structure has four ribs 4, which extend in the longitudinal direction parallel to the longitudinal axis L of the shank and protrude equally far in the radial direction.
  • a thickness of the ribs 4 of the rib structure 3 decreases away from the shaft in the radial direction R at least in sections.
  • the ribs 4 have in cross section the shape of a wedge or rectangle with rounded corners on the radially outer edge 4a. The two edges, which extend inwardly from an outer side 4a of a rib 4, are bevelled inwardly to widen.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)
  • Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
  • Gears, Cams (AREA)
EP18166360.0A 2017-04-29 2018-04-09 Tige pour une commande de soupape d'un moteur à combustion interne Active EP3396123B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102017004210.1A DE102017004210A1 (de) 2017-04-29 2017-04-29 Stoßstange für einen Ventiltrieb einer Brennkraftmaschine

Publications (2)

Publication Number Publication Date
EP3396123A1 true EP3396123A1 (fr) 2018-10-31
EP3396123B1 EP3396123B1 (fr) 2020-06-03

Family

ID=61952588

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18166360.0A Active EP3396123B1 (fr) 2017-04-29 2018-04-09 Tige pour une commande de soupape d'un moteur à combustion interne

Country Status (5)

Country Link
US (1) US20180328238A1 (fr)
EP (1) EP3396123B1 (fr)
CN (1) CN108798817A (fr)
DE (1) DE102017004210A1 (fr)
RU (1) RU2762761C2 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USD902834S1 (en) 2020-01-15 2020-11-24 Brian Kern Motorcycle engine clutch rod

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL136906C (fr) *
DE2136427A1 (de) * 1971-07-21 1973-02-01 Volkswagenwerk Ag Temperaturkompensiertes schubelement zur betaetigung eines ventiltellers
US3749068A (en) * 1971-11-01 1973-07-31 Production Tube Co Inc Push rod structure
JPS56103607U (fr) * 1980-01-07 1981-08-13
JPS58146007U (ja) * 1982-03-26 1983-10-01 臼井国際産業株式会社 内燃機関の動弁用プツシユロツド
JPS59155516A (ja) * 1983-02-25 1984-09-04 Yanmar Diesel Engine Co Ltd 内燃機関のプツシユロツド
US4850315A (en) 1988-05-27 1989-07-25 The Budd Company Push rod
US5027763A (en) 1989-12-05 1991-07-02 Mall Tooling And Engineering One-piece push rod having enlarged spherical seat
US5069173A (en) * 1989-12-05 1991-12-03 Mall Tooling And Engineering Push rod having irregularly shaped internal bore
AT5130U1 (de) 2001-06-21 2002-03-25 Avl List Gmbh Stösselstange, insbesondere für eine ventilbetätigungseinrichtung einer brennkraftmaschine
US20040149244A1 (en) * 2003-01-30 2004-08-05 Diestelmeier Stephen Alan Engine pushrod

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB621557A (en) * 1944-06-21 1949-04-12 Eaton Mfg Co Improvements in or relating to valve tappets for internal combustion engines
US2749889A (en) * 1950-09-09 1956-06-12 Eaton Mfg Co Valve gear mechanism
FR1594168A (fr) * 1967-12-07 1970-06-01
US3997229A (en) * 1975-09-15 1976-12-14 Thomas & Betts Corporation Flexible connecting means
FR2541720B1 (fr) * 1983-02-24 1987-05-22 Citroen Sa Arbre a cames frittees collees
JPS6245911A (ja) * 1985-08-21 1987-02-27 Honda Motor Co Ltd 内燃機関の動弁機構用バルブリフタ
RU2075600C1 (ru) * 1994-01-28 1997-03-20 Анатолий Павлович Рожков Толкатель кулачкового механизма привода клапана
JP2008240633A (ja) * 2007-03-27 2008-10-09 Honda Motor Co Ltd エンジンの動弁装置
JP5943854B2 (ja) * 2013-02-15 2016-07-05 株式会社オティックス ラッシュアジャスタ

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL136906C (fr) *
DE2136427A1 (de) * 1971-07-21 1973-02-01 Volkswagenwerk Ag Temperaturkompensiertes schubelement zur betaetigung eines ventiltellers
US3749068A (en) * 1971-11-01 1973-07-31 Production Tube Co Inc Push rod structure
JPS56103607U (fr) * 1980-01-07 1981-08-13
JPS58146007U (ja) * 1982-03-26 1983-10-01 臼井国際産業株式会社 内燃機関の動弁用プツシユロツド
JPS59155516A (ja) * 1983-02-25 1984-09-04 Yanmar Diesel Engine Co Ltd 内燃機関のプツシユロツド
US4850315A (en) 1988-05-27 1989-07-25 The Budd Company Push rod
US5027763A (en) 1989-12-05 1991-07-02 Mall Tooling And Engineering One-piece push rod having enlarged spherical seat
US5069173A (en) * 1989-12-05 1991-12-03 Mall Tooling And Engineering Push rod having irregularly shaped internal bore
AT5130U1 (de) 2001-06-21 2002-03-25 Avl List Gmbh Stösselstange, insbesondere für eine ventilbetätigungseinrichtung einer brennkraftmaschine
US20040149244A1 (en) * 2003-01-30 2004-08-05 Diestelmeier Stephen Alan Engine pushrod

Also Published As

Publication number Publication date
DE102017004210A1 (de) 2018-10-31
RU2762761C2 (ru) 2021-12-22
CN108798817A (zh) 2018-11-13
RU2018115223A (ru) 2019-10-24
RU2018115223A3 (fr) 2021-08-20
US20180328238A1 (en) 2018-11-15
BR102018008469A8 (pt) 2022-11-29
BR102018008469A2 (pt) 2019-03-12
EP3396123B1 (fr) 2020-06-03

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