EP1249582B1 - Moteur à combustion interne avec au moins deux arbres à cames en tête - Google Patents

Moteur à combustion interne avec au moins deux arbres à cames en tête Download PDF

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Publication number
EP1249582B1
EP1249582B1 EP02006171A EP02006171A EP1249582B1 EP 1249582 B1 EP1249582 B1 EP 1249582B1 EP 02006171 A EP02006171 A EP 02006171A EP 02006171 A EP02006171 A EP 02006171A EP 1249582 B1 EP1249582 B1 EP 1249582B1
Authority
EP
European Patent Office
Prior art keywords
internal combustion
combustion engine
cylinder head
valve
camshafts
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.)
Expired - Lifetime
Application number
EP02006171A
Other languages
German (de)
English (en)
Other versions
EP1249582A2 (fr
EP1249582A3 (fr
Inventor
Joachim Dietz
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.)
IHO Holding GmbH and Co KG
Original Assignee
INA Schaeffler KG
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 INA Schaeffler KG filed Critical INA Schaeffler KG
Publication of EP1249582A2 publication Critical patent/EP1249582A2/fr
Publication of EP1249582A3 publication Critical patent/EP1249582A3/fr
Application granted granted Critical
Publication of EP1249582B1 publication Critical patent/EP1249582B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • F01L1/34—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift
    • F01L1/344—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear
    • F01L1/3442—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear using hydraulic chambers with variable volume to transmit the rotating force
    • 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
    • F01L1/34—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift
    • 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
    • F01L1/02—Valve drive
    • F01L2001/028—Pre-assembled timing arrangement, e.g. located in a cassette
    • 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
    • F01L1/02—Valve drive
    • F01L1/04—Valve drive by means of cams, camshafts, cam discs, eccentrics or the like
    • F01L1/047—Camshafts
    • F01L1/053—Camshafts overhead type
    • F01L2001/0537—Double overhead camshafts [DOHC]
    • 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
    • F01L1/34—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift
    • F01L1/344—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear
    • F01L1/3442—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear using hydraulic chambers with variable volume to transmit the rotating force
    • F01L2001/34423—Details relating to the hydraulic feeding circuit
    • F01L2001/34426—Oil control valves
    • F01L2001/34433—Location oil control valves
    • 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
    • F01L1/34—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift
    • F01L1/344—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear
    • F01L2001/34486—Location and number of the means for changing the angular relationship
    • F01L2001/34489—Two phasers on one camshaft
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B2275/00—Other engines, components or details, not provided for in other groups of this subclass
    • F02B2275/18—DOHC [Double overhead camshaft]

Definitions

  • the invention relates to an internal combustion engine with at least two in their Cylinder head arranged side by side according to the characteristics of the preamble of claim 1, and it is particularly advantageous Internal combustion engines can be realized with an intake and an exhaust camshaft.
  • Such an internal combustion engine is generic from EP 0 945 598 A2 previously known.
  • this internal combustion engine are in a special embodiment each in a radial bearing in the cylinder head of the internal combustion engine supported ends of both camshafts, each with a device to vary the timing of the gas exchange valves of the internal combustion engine connected, each consisting of a traction means with the crankshaft
  • an output unit connected to the respective camshaft.
  • the supply and discharge of the hydraulic pressure medium to and from the pressure chambers of both devices is separate for each device by an electromagnetic Control valve regulated, which via the radial bearing of the respective Camshaft and via corresponding pressure medium channels in this and in Cylinder head of the internal combustion engine with the pressure chambers of the device in Fluid connection is established.
  • Each of these electromagnetic control valves is made usually from an electromagnet with an electrical end face Plug contact and from a cartridge connected to the electromagnet, which in the known solution is designed as a valve seat Hole is insertable, each in the vicinity of the radial bearing of the camshafts into the cylinder head walls of the internal combustion engine running parallel to this is incorporated and for space-saving arrangement of the control valves runs obliquely to the crankcase of the internal combustion engine.
  • a disadvantage of this known internal combustion engine is that electromagnetic control valves for the devices for varying the Valve control times despite their oblique arrangement on the long sides of the cylinder head walls an enlarged installation space for the internal combustion engine in the vehicle that is not always available or only through elaborate rearrangement of the subordinate units of the internal combustion engine must be created.
  • the electromagnets are the Control valves and their electrical plug contacts through their unprotected Arrangement on the internal combustion engine an increased risk of contamination exposed to long-term malfunction or failure of the electromagnetic Control valves and thus the failure of the devices for Varying the valve timing of the internal combustion engine can result.
  • the invention is therefore based on the object of an internal combustion engine with at least two cam shafts arranged side by side in their cylinder head, especially with an intake and an exhaust camshaft conceive which by a space-saving arrangement of the electromagnetic Control valves for the device for varying the valve timing requires only a minimum of installation space in the vehicle and is simple Measures to largely avoid pollution-related failures of electromagnetic control valves.
  • valve receptacles Control valves as separate flange brackets with an insertion hole are formed, which are directly above the radial bearing of the camshafts are attached to the cylinder head of the internal combustion engine such that the Control valves with their cartridges pointing away from each other and with their electromagnets directly opposite on a common, across the longitudinal axes of the camshafts extending longitudinal axis side by side are arranged, the electrical plug contacts of the electromagnet via an extension from each other which runs parallel to the end faces thereof cybersecurity next to the electromagnets parallel to the longitudinal axis of the Control valves are arranged.
  • valve receptacles of the control valves preferred have a trapezoidal profile cross-section and are the larger of their two Parallel surfaces on a flat counter surface, preferably on the Bolted cylinder head of the internal combustion engine cylinder head cover.
  • the larger parallel surfaces of the valve seats in addition, several mounting flanges for threaded screws are formed, the corresponding threaded holes in the counter surface of the cylinder head cover are screwable.
  • the trapezoidal profile cross section of the Valve mounts has proven to be space and weight saving most advantageously proven, but can also be by another suitable one Profile cross-section, for example through a semicircular or a rectangular profile cross-section to be replaced.
  • each one half of the bearing in a known manner mostly two-part radial bearing of the camshafts in the cylinder head cover is integrated and in the cylinder head cover and in the Integrated valve lines with the insertion hole connected in the valve seat arranged above the radial bearing is.
  • Starting from the insertion holes for the control valves in the valve seats takes place via these pressure medium lines and via the radial bearings the camshafts and the pressure medium channels arranged in them Supply and discharge of the hydraulic pressure medium to and from the pressure chambers of the devices for varying the valve timing.
  • these plug contacts are preferably at a distance from the To arrange lateral surfaces of the electromagnets that these lateral surfaces as Guide surfaces can be used when installing the cable connector.
  • the distance of the plug contacts to the outer surfaces of the electromagnets roughly corresponds to the thickness of the cable connector housing, making it with manual assembly of the cable connector even without direct visual contact is possible by placing the cable connector on the outer surface of the electromagnet and then linearly moving the cable connector along the lateral surfaces a secure plug connection between the cable plugs and to produce the electrical plug contacts of the electromagnets.
  • the internal combustion engine designed according to the invention with at least two in whose cylinder head arranged side by side camshafts, in particular with an intake and an exhaust camshaft, thus facing the Internal combustion engines known from the prior art have the advantage that due to the space-saving arrangement of the electromagnetic control valves no changes for the devices for varying the valve timing of the installation space of the internal combustion engine or a rearrangement of the secondary units of the internal combustion engine is more necessary.
  • the Arrangement of the electromagnetic control valves in separate, as flange brackets trained valve receptacles on the cylinder head of the internal combustion engine also has the advantage that this is the service of Internal combustion engine are easily accessible and cleaned in the simplest way or can be exchanged.
  • These devices 8, 9 are in the illustrated embodiment as so-called rotary piston adjuster, the drive unit 11, 12 by a hollow cylindrical stator with a plurality of radial boundary walls and their output unit 13, 14 by a rotor with several blades is formed.
  • these devices 8, 9 are between the drive unit 11, 12 and the output unit 13, 14 several against each other acting as well as optionally or simultaneously with a hydraulic pressure medium pressurizable pressure chambers formed by the blades of the rotor in protrude the space between the radial boundary walls of the stator and divide them into two pressure chambers.
  • valve receptacles 19, 20 of the control valves 15, 16 according to the invention as separate flange brackets are formed with an insertion hole 29, 30, which is directly above the radial bearing 2, 3 of the camshafts 4, 5 in this way on the cylinder head 1 the internal combustion engine are attached that the control valves 15, 16 with their Cartridge 21, 22 pointing away from each other and with their electromagnets 23, 24 directly opposite each other on a common, transverse to the Longitudinal axes of the camshafts 4, 5 running longitudinal axis side by side are arranged.
  • the plug contacts 27, 28 of the electromagnet 23, 24 also according to the invention in each case parallel to whose end faces 25, 26 extending extension 31, 32 pointing away from each other in addition to the electromagnets 23, 24 and parallel to the longitudinal axis of the Control valves 15, 16 arranged. It is particularly clear from FIG. 2 that the extensions 31, 32 of the plug contacts 27, 28 for further space-saving Arrangement of the control valves 15, 16 in the direction of the devices 8, 9 have pivoted position, through which the plug contacts 27, 28 in a horizontal plane between the devices 8, 9 and Electromagnets 23, 24 of the control valves 15, 16 are arranged.
  • the result difficult accessibility of the plug contacts 27, 28 is thereby Measure remedied that the plug contacts 27, 28 at a distance the lateral surfaces 42, 43 of the electromagnets 23, 24 are arranged, the corresponds approximately to the thickness of the housing of the cable connector to be installed, so that the outer surfaces 42, 43 as guide surfaces in the manufacture of the Plug connection between the cable plug and the plug contacts 27, 28 are usable.
  • valve receptacles 19, 20, which are designed as flange brackets, take up space have weight-saving, trapezoidal profile cross-section and with the larger of its two parallel surfaces 33, 34 on a flat counter surface 35, 36 are screwed, in the embodiment shown on one the cylinder head 1 attachable cylinder head cover 37 is located.
  • cylinder head cover 37 is in each case one half of the bearing.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Valve Device For Special Equipments (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)

Claims (5)

  1. Moteur à combustion interne comprenant au moins deux arbres à cames, plus particulièrement un arbre à cames d'admission et un arbre à cames d'échappement, agencés, l'un à côté de l'autre, dans la tête de cylindre du moteur à combustion interne ayant les caractéristiques suivantes :
    un dispositif hydraulique (8, 9) pour varier les temps d'ouverture et de fermeture des soupapes de remplacement des gaz d'un moteur à combustion interne est fixé sur l'extrémité (6, 7) de chaque arbres à cames (4, 5), ladite extrémité étant agencée dans un palier radial (2, 3) dans la tête de cylindre (1) du moteur à combustion interne,
    les dispositifs (8, 9) comportent, à chaque fois, une unité d'entraínement (11, 12) qui est en liaison d'entraínement, par l'intermédiaire d'un moyen d'entraínement (10), avec le vilebrequin du moteur à combustion interne, et une unité entraínée (13, 14) qui est immobilisée en rotation sur l'arbre à cames respectif (4, 5),
    entre l'unité d'entraínement (11, 12) et l'unité entraínée (13, 14) de chaque dispositif (8, 9) sont formées au moins deux chambres hydrauliques sous pression qui travaillent l'une à l'encontre de l'autre, et qui peuvent être actionnées facultativement ou simultanément par un milieu hydraulique sous pression,
    l'amenée et la décharge du milieu hydraulique sous pression dans les chambres de pression de chaque dispositif (8, 9) s'effectuent, à chaque fois, à l'aide d'une soupape électromagnétique de commande (15, 16), au travers les paliers radiaux (2, 3) des arbres à cames (4, 5) et au travers des canaux de milieu sous pression (17, 17', 18, 18') qui sont agencés dans les arbres à cames (4, 5) et dans la tête de cylindre (1) du moteur à combustion interne,
    les soupapes de commande (15, 16) comportent, à chaque fois, une cartouche (21, 22) qui peut être enfichée dans un logement (19, 20) de soupape et un électro-aimant (23, 24) qui est relié à celle-ci et comprend, sur son côté frontal (25, 26) libre, un contact électrique à fiches (27, 28),
       caractérisé en ce que
    les logements (19, 20) des soupapes de commande (15, 16) sont configurés sous la forme de teneurs séparés à brides ayant un alésage d'insertion (29, 30) lesdits teneurs sont fixés directement au-dessus des paliers radiaux (2, 3) des cames à arbres (4, 5) de telle façon sur la tête de cylindre (1) du moteur à combustion interne
    que les soupapes de commande (15, 16) sont agencées, l'une à côté de l'autre, sur un axe longitudinal commun qui s'étend en travers des axes longitudinaux des cames à arbres (4, 5), les cartouches (21, 22) des soupapes de commande (15, 16) étant orientées à l'opposé, l'une de l'autre, pendant que ses électro-aimants (23, 24) font face, l'un à l'autre, et,
    par l'intermédiaire des rallonges (31, 32) respectives qui s'étendent à chaque fois parallèlement aux côtés frontaux (25, 26) des électro-aimants (23, 24), les contacts à fiches (27, 28) des électro-aimants (23, 24) sont agencés orientés à l'opposé, l'un de l'autre, à côté des électro-aimants (23, 24) et parallèlement à l'axe longitudinal des soupapes de commande (15, 16).
  2. Moteur à combustion interne selon la revendication 1, caractérisé en ce que, les logements (19, 20) des soupapes de commande (15, 16) ont, en section transversale, de préférence, un profil en forme d'un trapèze et sont vissés par leurs plus grandes surfaces parallèles (33, 34) sur une contre-surface plane d'un couvercle (37) de tête de cylindre qui peut être posé, de préférence, sur la tête de cylindre (1) du moteur à combustion interne.
  3. Moteur à combustion interne selon la revendication 2, caractérisé en ce que, une moitié (38, 39) de chacun des paliers radiaux (2, 3) des arbres à cames (4, 5), lesquels paliers sont configurés de manière connue en deux parties, est intégrée dans le couvercle (37) de tête de cylindre et est reliée aux alésages d'insertion (29, 30) prévus dans les logements (19, 20) des soupapes par des conduits (40, 40', 41, 41') de milieu sous pression agencés dans le couvercle (37) de tête de cylindre et dans les logements (19, 20) des soupapes.
  4. Moteur à combustion interne selon la revendication 1, caractérisé en ce que les contacts à fiches (27, 28) des électro-aimants (23, 24) des soupapes de commande (15, 16) sont agencés, de préférence, de telle manière à l'écart des surfaces périphériques externes (42, 43) des électro-aimants (23, 24) que ces surfaces périphériques externes (42, 43) peuvent être utilisées comme surfaces de guidage lors du montage des prises de câble.
  5. Moteur à combustion interne selon la revendication 1, caractérisé en ce que les dispositifs (8, 9) avec leurs moyens d'entraínement (10), les logements (19, 20) des soupapes et les électro-aimants (23, 24) des soupapes de commande (15, 16) avec leurs contacts électriques à fiches (27, 28) sont supplémentairement protégés contre des polluants, de préférence, par un capot plastique (44).
EP02006171A 2001-04-11 2002-03-19 Moteur à combustion interne avec au moins deux arbres à cames en tête Expired - Lifetime EP1249582B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10118119 2001-04-11
DE10118119A DE10118119C2 (de) 2001-04-11 2001-04-11 Brennkraftmaschine mit zwei in deren Zylinderkopf nebeneinander angeordneten Nockenwellen, insbesondere mit einer Einlass- und einer Auslassnockenwelle

Publications (3)

Publication Number Publication Date
EP1249582A2 EP1249582A2 (fr) 2002-10-16
EP1249582A3 EP1249582A3 (fr) 2003-01-08
EP1249582B1 true EP1249582B1 (fr) 2004-02-18

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP02006171A Expired - Lifetime EP1249582B1 (fr) 2001-04-11 2002-03-19 Moteur à combustion interne avec au moins deux arbres à cames en tête

Country Status (3)

Country Link
US (1) US6505588B2 (fr)
EP (1) EP1249582B1 (fr)
DE (2) DE10118119C2 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7395802B2 (en) * 2006-06-07 2008-07-08 Ford Global Technologies, Llc Oil supply for internal combustion engine camshaft
GB2467943A (en) * 2009-02-23 2010-08-25 Mechadyne Plc I.c. engine double overhead camshaft phasing system
US8166939B2 (en) * 2009-03-05 2012-05-01 GM Global Technology Operations LLC Cam bearing surface of an engine cylinder head that includes an axially extending oil passage
DE102010006414A1 (de) 2010-02-01 2011-08-04 Schaeffler Technologies GmbH & Co. KG, 91074 Ölversorgungsmodul für ein Nockenwellenverstellsystem und Nockenwellenverstelleinheit
JP6194695B2 (ja) 2013-08-26 2017-09-13 アイシン精機株式会社 弁開閉時期制御装置

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04342810A (ja) 1991-05-21 1992-11-30 Toyota Motor Corp 油圧駆動可変バルブタイミング装置の給油装置
JP3189679B2 (ja) * 1996-05-24 2001-07-16 トヨタ自動車株式会社 内燃機関のバルブ特性制御装置
JPH10184323A (ja) * 1996-12-26 1998-07-14 Yamaha Motor Co Ltd ４サイクルエンジン
JP3847428B2 (ja) * 1997-11-19 2006-11-22 ヤマハ発動機株式会社 内燃エンジンのシリンダヘッド構造
JP4036401B2 (ja) * 1998-03-27 2008-01-23 ヤマハ発動機株式会社 可変バルブタイミング装置を備えた４サイクルエンジン
DE19816254A1 (de) * 1998-04-11 1999-10-14 Schaeffler Waelzlager Ohg Einrichtung zum Verändern der Ventilsteuerzeiten einer mit zwei Nockenwellen ausgerüsteten Brennkraftmaschine
JP4229501B2 (ja) * 1998-11-13 2009-02-25 ヤマハ発動機株式会社 エンジンのオイルコントロールバルブ配置構造
EP1046793A3 (fr) * 1999-04-21 2002-08-21 Ford Global Technologies, Inc. Dispositif de calage de soupape variable et méthode
JP2001050102A (ja) * 1999-05-31 2001-02-23 Yamaha Motor Co Ltd ４サイクルエンジン
US6308672B1 (en) * 1999-08-05 2001-10-30 Delphi Technologies, Inc. Front-mounting cam phaser module

Also Published As

Publication number Publication date
DE10118119C2 (de) 2003-11-20
DE50200246D1 (de) 2004-03-25
US6505588B2 (en) 2003-01-14
DE10118119A1 (de) 2002-10-24
US20020174842A1 (en) 2002-11-28
EP1249582A2 (fr) 2002-10-16
EP1249582A3 (fr) 2003-01-08

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