EP0406528B1 - Entraînement d'arbre à cames pour moteur en V à plusieurs cylindres - Google Patents

Entraînement d'arbre à cames pour moteur en V à plusieurs cylindres Download PDF

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Publication number
EP0406528B1
EP0406528B1 EP90106689A EP90106689A EP0406528B1 EP 0406528 B1 EP0406528 B1 EP 0406528B1 EP 90106689 A EP90106689 A EP 90106689A EP 90106689 A EP90106689 A EP 90106689A EP 0406528 B1 EP0406528 B1 EP 0406528B1
Authority
EP
European Patent Office
Prior art keywords
crankshaft
camshaft drive
gearwheel
driven
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
EP90106689A
Other languages
German (de)
English (en)
Other versions
EP0406528A1 (fr
Inventor
Herbert Dipl.-Ing. Ampferer (Fh)
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.)
Dr Ing HCF Porsche AG
Original Assignee
Dr Ing HCF Porsche AG
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 Dr Ing HCF Porsche AG filed Critical Dr Ing HCF Porsche AG
Publication of EP0406528A1 publication Critical patent/EP0406528A1/fr
Application granted granted Critical
Publication of EP0406528B1 publication Critical patent/EP0406528B1/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
    • F01L1/02—Valve drive
    • F01L1/022—Chain drive
    • 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
    • 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
    • F02B75/00—Other engines
    • F02B75/16—Engines characterised by number of cylinders, e.g. single-cylinder engines
    • F02B75/18—Multi-cylinder engines
    • F02B75/22—Multi-cylinder engines with cylinders in V, fan, or star arrangement
    • 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
    • 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
    • F02B2275/08—Endless member is a chain
    • 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 a camshaft drive of a multi-cylinder V-engine according to the preamble of claim 1.
  • Such a camshaft drive is known from FR-A-2 059 220. Both cylinder rows of a V-engine are assigned two overhead camshafts for valve actuation, which are driven by two chain drives from an intermediate wheel located in the V center.
  • the idler gear is composed of the two sprockets driving the camshafts and a sprocket driven by the crankshaft.
  • a camshaft drive of a V-engine is known, which is arranged at the output end of the crankshaft.
  • a camshaft is assigned to each cylinder bank for valve actuation.
  • the two camshafts are driven by the crankshaft with several spur gears.
  • a flywheel 3 On a crankshaft 2 of an 8-cylinder V-engine mounted in a crankcase 1, a flywheel 3 is screwed to the output-side end face with several screws 4.
  • a camshaft drive emanating from the crankshaft 2 is arranged between the flywheel 3 and the final bearing 5. It consists of a gear 7 of an idler gear 8 meshing with a crankshaft gear 6 and two chain drives driven by the idler gear 8 to the four camshafts 11, 12, 13, 14 assigned to the two cylinder rows 9, 10, each of which has a double sprocket 11 ', 12 ', 13', 14 'wear.
  • the double sprockets 11 ', 12' are driven by a double sprocket 16 with a double roller chain
  • the double sprockets 13 ', 14' are driven by a double sprocket 18 with a double roller chain 17.
  • the double chain wheels 16, 18 are formed in one piece and fastened on the hub sleeve 19 of the gear 7.
  • an oil pump 20 which supplies hydraulic turning devices 21, 22 on the camshafts 11, 13 with hydraulic pressure.
  • the rotational position between the camshafts 11, 13 and the chain wheels 11 ', 13' assigned to them is changed with the twisting devices.
  • a pump wheel 24 is fastened on a hollow hub 23 of the gear wheel 7.
  • the oil pump 20 is covered by a pump cover 25 which forms the pump housing together with a cover disk 26 screwed to it.
  • a bearing sleeve 27 is fastened in the pump cover 15, on which the intermediate wheel 8 is mounted and through which the oil supply to the oil pump 20 takes place.
  • crankshaft 2 to idler gear 8 has a ratio of 1: 2, but the sprocket ratio from idler gear 8 to camshafts 11, 12, 13, 14 is 1: 1, camshafts 11, 12, 13, 14 also run half crankshaft speed around.
  • the main oil pump 30 is driven by the crankshaft 2 with a chain drive 31. It sucks in lubricating oil from the oil pan 32 and pumps it with a pressure of approx. 3 bar to the bearing points of the internal combustion engine to be lubricated. A partial flow of this oil passes through the central bore of the bearing sleeve 27 to the oil pump 20, which increases the oil pressure to approximately 8 bar and gives it to the hydraulic camshaft twisting devices 21. Since this hydraulic pressure is very high, the camshaft rotating devices 21 can be made small-volume in the desired manner.
  • the chain drive 31 is formed by a chain wheel 33 fastened to the crankshaft 2, a chain 34 and a chain wheel 35 fastened to the main oil pump 30.
  • the chain wheel 33 is composed of two half-shells which were formed by radial blasting of a cylindrical chain wheel hub. In a groove 36 of the crankshaft 2, the two half-shells of the chain wheel 33 are joined together again at their break point and held axially.
  • a tension ring 37 mounted on the chain wheel 35 holds the two half shells together radially.
  • the sprocket 33 is locked in the circumferential direction with a fitting sleeve 38 which is fixed in the crankshaft 2 and which was pushed through during assembly through an aligned bore 39 of the flywheel.
  • the ring gear 40 of the chain wheel 33 and thus the entire chain drive 31 is located centrally between the two double chain wheels 16, 18 of the camshaft drive.
  • crankshaft gear 6 is pushed for assembly over the smoothly turned outer surface 41 of the crankshaft 2 until it rests on the clamping ring 37. At this seat it is shrunk onto the crankshaft 2.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)
  • Lubrication Of Internal Combustion Engines (AREA)
  • Valve Device For Special Equipments (AREA)

Claims (6)

  1. Entraînement d'arbre à cames pour moteur en V à plusieurs cylindres, dont les soupapes sont actionnées au moyen chaque fois de deux arbres à cames (11, 12; 13, 14) montés en tête, associés à une rangée de cylindres et entraînés par le vilebrequin (2) par l'intermédiaire d'une roue intermédiaire (8), la roue intermédiaire (8) présentant une roue dentée (7) entraînée par un pignon de vilebrequin (6) ainsi que deux roues à chaînes (16, 18) à l'aide desquelles chaque fois les deux arbres à cames (11, 12; 13, 14) d'une rangée de cylindres (9; 10) sont entraînés à l'aide d'une chaîne (15; 17), caractérisé en ce que l'entraînement d'arbre à cames est disposé du côté entraîné du vilebrequin (2), près du volant d'inertie (3), en ce que le pignon de vilebrequin (6) et la roue dentée (7) s'engrènent, et en ce que les roues à chaînes (16, 18) sont fixées sur une face frontale de la roue dentée (7), sur sa douille de moyeu (19) et la roue intermédiaire (8) ainsi formée étant montée à rotation sur une douille de palier (27), fixée dans le carter de vilebrequin 1.
  2. Entraînement d'arbre à cames selon la revendication 1, caractérisé en ce qu'au moins la position relative des arbres à cames (11, 13), actionnant les soupapes d'admission, des deux rangées de cylindres (9, 10), sont réglables avec des dispositifs de rotation (21, 22) hydrauliques et en ce que les dispositifs de rotation 21, 22 recoivent une pression hydraulique venant d'une pompe à huile (20), disposée coaxialement sur la roue intermédiaire (8), intégrée dans son contour extérieur et entraînée par elle.
  3. Entraînement d'arbre à cames selon la revendication 1 et 2, caractérisé en ce que la roue de pompe (24) de la pompe à huile (20) est fixée sur l'autre face frontale de la roue dentée (7), sur son moyeu creux (23).
  4. Entraînement d'arbre à cames selon la revendication 1 et 2, caractérisé en ce que la douille de palier (27) est fixée de façon étanche dans le couvercle de pompe (25) monté sur le carter de vilebrequin (1).
  5. Entraînement d'arbre à cames selon la revendication 1 et 2, caractérisé en ce que les roues à chaîne (16, 18) sont réalisées sous forme de roues à chaînes doubles (16, 18) et entraînent les arbres à cames (11, 12, 13, 14) à l'aide de chaines doubles à rouleaux (15, 17).
  6. Entraînement d'arbre à cames selon la revendication 1, caractérisé en ce que le rapport de transmission des roues dentée entre le vilebrequin (2) et la roue intermédiaire (8) et de 1 : 2.
EP90106689A 1989-07-01 1990-04-06 Entraînement d'arbre à cames pour moteur en V à plusieurs cylindres Expired - Lifetime EP0406528B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3921716 1989-07-01
DE3921716A DE3921716A1 (de) 1989-07-01 1989-07-01 Nockenwellenantrieb eines mehrzylinder-v-motors

Publications (2)

Publication Number Publication Date
EP0406528A1 EP0406528A1 (fr) 1991-01-09
EP0406528B1 true EP0406528B1 (fr) 1993-09-01

Family

ID=6384127

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90106689A Expired - Lifetime EP0406528B1 (fr) 1989-07-01 1990-04-06 Entraînement d'arbre à cames pour moteur en V à plusieurs cylindres

Country Status (5)

Country Link
US (1) US5014655A (fr)
EP (1) EP0406528B1 (fr)
JP (1) JPH0337307A (fr)
DE (2) DE3921716A1 (fr)
ES (1) ES2043165T3 (fr)

Families Citing this family (22)

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Publication number Priority date Publication date Assignee Title
US5184582A (en) * 1987-12-01 1993-02-09 Yamaha Hatsudoki Kabushiki Kaisha Engine unit for vehicle
US5016592A (en) * 1989-02-14 1991-05-21 Yamaha Hatsudoki Kabushika Kaisha Cylinder head and valve train arrangement for multiple valve engine
KR950003163B1 (ko) * 1990-10-31 1995-04-01 스즈끼 가부시끼가이샤 엔진의 오일펌프 부착구조
DE4200509A1 (de) * 1992-01-11 1993-07-15 Porsche Ag Nockenwellenantrieb einer mehrzylindrigen brennkraftmaschine
JPH0666112A (ja) * 1992-08-20 1994-03-08 Mazda Motor Corp Ｖ型エンジン
JPH0625526U (ja) * 1992-08-31 1994-04-08 株式会社椿本チエイン Ｖ型又は水平対向型エンジンのカム軸駆動装置
FI92855C (fi) * 1993-02-16 1995-01-10 Waertsilae Diesel Int Ison dieselmoottorin nokka-akselin säädettävä voimansiirtojärjestely
DE4314044A1 (de) * 1993-04-29 1994-11-03 Porsche Ag Brennkraftmaschine mit zwei Zylinderreihen
DE19517506C2 (de) * 1995-05-12 1997-06-05 Mak Maschinenbau Krupp Kurbelwelle
DE19633949A1 (de) * 1996-08-22 1998-02-26 Bayerische Motoren Werke Ag Brennkraftmaschine der V-Bauart mit einem endlosen Zugmittelgetriebe
JPH1061414A (ja) * 1996-08-22 1998-03-03 Fuji Heavy Ind Ltd オーバヘッドカム型エンジンのカム軸駆動装置
DE19840659A1 (de) * 1998-09-05 2000-03-09 Volkswagen Ag Steuertrieb für Nockenwellenanordnungen
JP2000161074A (ja) * 1998-11-27 2000-06-13 Kioritz Corp ４サイクル内燃機関
IT1308453B1 (it) * 1999-04-23 2001-12-17 Iveco Fiat Dispositivo di trasmissione a catena per il comando delladistribuzione di un motore endotermico a due alberi a camme in testa
JP3435143B2 (ja) * 2001-03-09 2003-08-11 川崎重工業株式会社 オーバヘッドカム型ｖ型エンジン
JP3964393B2 (ja) * 2002-02-20 2007-08-22 ヤマハ発動機株式会社 エンジンの動弁装置
JP3618094B2 (ja) * 2002-04-24 2005-02-09 川崎重工業株式会社 車輌用ｖ型エンジン
US6807927B2 (en) * 2003-03-28 2004-10-26 Leatherman Tool Group,. Inc. Piston engine with counterrotating crankshafts
US7168405B2 (en) * 2004-01-30 2007-01-30 Hartley Jr John J Camshaft drive mechanism
US7980975B2 (en) * 2007-11-16 2011-07-19 Grossman Victor A Drive configuration and method thereof
US7905220B2 (en) * 2009-07-01 2011-03-15 Haynes Corporation Speed and position sensing device for EMD two-cycle diesel engines
FR3058759B1 (fr) * 2016-11-15 2020-07-17 Renault S.A.S Dispositif de transmission de mouvement de distribution

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DE3247916A1 (de) * 1982-12-24 1984-06-28 Robert Bosch Gmbh, 7000 Stuttgart Vorrichtung zur steuerung der ventile einer brennkraftmaschine ueber eine nockenwelle
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Also Published As

Publication number Publication date
DE59002532D1 (de) 1993-10-07
US5014655A (en) 1991-05-14
EP0406528A1 (fr) 1991-01-09
ES2043165T3 (es) 1993-12-16
DE3921716A1 (de) 1991-01-10
JPH0337307A (ja) 1991-02-18

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