EP0406527B1 - Dispositif d'entraînement de deux pompes à huile pour moteur à combustion interne à pistons alternatifs - Google Patents

Dispositif d'entraînement de deux pompes à huile pour moteur à combustion interne à pistons alternatifs Download PDF

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Publication number
EP0406527B1
EP0406527B1 EP90106688A EP90106688A EP0406527B1 EP 0406527 B1 EP0406527 B1 EP 0406527B1 EP 90106688 A EP90106688 A EP 90106688A EP 90106688 A EP90106688 A EP 90106688A EP 0406527 B1 EP0406527 B1 EP 0406527B1
Authority
EP
European Patent Office
Prior art keywords
crankshaft
oil pump
drive
combustion engine
gearwheel
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
EP90106688A
Other languages
German (de)
English (en)
Other versions
EP0406527A1 (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 EP0406527A1 publication Critical patent/EP0406527A1/fr
Application granted granted Critical
Publication of EP0406527B1 publication Critical patent/EP0406527B1/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
    • 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
    • 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
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M1/00—Pressure lubrication
    • F01M1/02—Pressure lubrication using lubricating pumps
    • 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
    • F02B67/00—Engines characterised by the arrangement of auxiliary apparatus not being otherwise provided for, e.g. the apparatus having different functions; Driving auxiliary apparatus from engines, not otherwise provided for
    • F02B67/04—Engines characterised by the arrangement of auxiliary apparatus not being otherwise provided for, e.g. the apparatus having different functions; Driving auxiliary apparatus from engines, not otherwise provided for of mechanically-driven auxiliary apparatus
    • F02B67/06—Engines characterised by the arrangement of auxiliary apparatus not being otherwise provided for, e.g. the apparatus having different functions; Driving auxiliary apparatus from engines, not otherwise provided for of mechanically-driven auxiliary apparatus driven by means of chains, belts, or like endless members
    • 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
    • F02B75/00—Other engines
    • F02B75/16—Engines characterised by number of cylinders, e.g. single-cylinder engines
    • F02B75/18—Multi-cylinder engines
    • F02B2075/1804—Number of cylinders
    • F02B2075/1832—Number of cylinders eight
    • 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 device for driving two oil pumps arranged on a reciprocating piston internal combustion engine according to the preamble of claim 1, which is based on DE-A-26 20 480.
  • a lubricating oil supply for an internal combustion engine which has a main oil pump for supplying a main lubricating oil circuit and a second oil pump for a secondary lubricating oil circuit of auxiliary machines.
  • EP-PS 163 046 describes a hydraulic device for adjusting the angle of two camshafts, in which an oil pump supplies the hydraulic pressure for the cam rotation device and at the same time supplies the bearings of the camshaft with lubricating oil.
  • the characteristic feature of claim 1 serves to solve this problem. Since two separate drives are used to drive the two oil pumps from the crankshaft and to separate the functions, one oil pump for supplying lubricating oil, the other oil pump is used exclusively for building up the hydraulic pressure on the camshaft twisting device both oil pumps are optimally designed with regard to delivery volume and delivery pressure. While the main oil pump for supplying lubricating oil supplies relatively large amounts of oil with low pressure, the second oil pump is designed in such a way that it delivers a small amount of delivery with significantly higher pressure.
  • a space-saving design is realized in that the drives of both pumps and a camshaft drive emanating from the crankshaft are located between the flywheel and the crankshaft end bearing, so that none in the axial direction of the internal combustion engine for the drives of the oil pumps additional space is required. If the main oil pump is below the crankshaft, the second oil pump and its drive together with the camshaft drive are above the crankshaft, this space is fully used.
  • Another space advantage can be achieved in that the second oil pump is integrated in an idler gear of the camshaft drive and is driven by it lying coaxially to the idler gear.
  • 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 15
  • the double sprockets 13 ', 14' are driven by a double sprocket 18 with a double roller chain 17.
  • the double sprockets 16, 18 are formed in one piece and attached to 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, together with a cover disk 26 screwed to it, forms the pump housing.
  • 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)
  • Lubrication Of Internal Combustion Engines (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)
  • Valve Device For Special Equipments (AREA)
  • Reciprocating Pumps (AREA)

Claims (7)

  1. Dispositif d'entraînement de deux pompes à huile, montées sur un moteur à combustion interne à pistons alternatifs, avec une pompe à huile principale (30) destinée à alimenter le circuit de lubrifiant du moteur à combustion interne et une seconde pompe à huile (20), les soupapes du moteur à combustion interne étant actionnées par des arbres à cames (11, 12, 13, 14) qui sont entraînés par un vilebrequin, caractérisé en ce que la seconde pompe à huile fournit uniquement la pression hydraulique à un dispositif de rotation d'arbres à cames (21) hydraulique, en ce que la pompe à huile principale (30) et la seconde pompe à huile (20) sont entraînées, avec des mécanismes d'entraînement séparés (mécanisme à chaîne 31 ; mécanisme à engrenage 6, 7) par le vilebrequin (2), monté sur le carter-moteur (1), et en ce que les mécanismes d'entraînement (31) et (6, 7) ainsi qu'un mécanisme d'entraînement d'arbres à cames, partant du vilebrequin (2), se trouvent entre un volant d'inertie (3), fixé à l'extrémité côté sortie du vilebrequin (2) et le palier terminal (5) du vilebrequin (2).
  2. Dispositif selon la revendication 1, caractérisé en ce que pour entraîner la pompe à huile principale (30) il est prévu un mécanisme à chaîne (31) et pour entraîner la seconde pompe à huile (20), un mécanisme à engrenage (6, 7).
  3. Dispositif selon les revendications 1 et 2, caractérisé en ce que la seconde pompe à huile (20) est montée coaxialement sur une roue intermédiaire (8) et est entraînée par celle-ci, roue par l'intermédiaire de laquelle les arbres à cames (11, 12, 13, 14) sont entraînés par le vilebrequin (2).
  4. Dispositif selon les revendications 1 et 3, caractérisé en ce qu'une roue de chaîne (33), entraînant la pompe à huile principale (30), est formée de deux coques, maintenues ensemble radialement par une bague de serrage (37), est maintenue axialement dans une rainure (36) du vilebrequin (2) et est fixée périphériquement par une douille d'ajustage (38) du vilebrequin (2).
  5. Dispositif selon les revendications 1 et 3, caractérisé en ce que la roue dentée (6) du vilebrequin, engrenant avec la roue dentée (7) de la roue intermédiaire (8), peut être emmanchée lors du montage sur le vilebrequin (2), sur sa surface d'enveloppe (41) lissée au tour, jusqu'à venir s'appliquer contre une bague de serrage (37) qui maintient radialement la roue de chaîne (33) et en ce que la roue dentée (6) du vilebrequin est emmanchée par frettage sur le vilebrequin (2), en ce point.
  6. Dispositif selon la revendication 5, caractérisé en ce que la douille d'ajustage (38) peut être introduite, en vue du montage, à travers un alésage (39) frontal du vilebrequin (2).
  7. Dispositif selon les revendications 1 et 3, caractérisé en ce que la roue intermédiaire (8) avec la pompe à huile (20) est montée sur une douille de palier (27), fixée dans un couvercle de pompe (25), par l'alésage central de laquelle une partie de l'huile de lubrification, mise en circulation par la pompe à huile principale (30), est envoyée à la pompe à huile (20).
EP90106688A 1989-07-01 1990-04-06 Dispositif d'entraînement de deux pompes à huile pour moteur à combustion interne à pistons alternatifs Expired - Lifetime EP0406527B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3921715 1989-07-01
DE3921715A DE3921715A1 (de) 1989-07-01 1989-07-01 Vorrichtung zum antrieb zweier oelpumpen an einer hubkolben-brennkraftmaschine

Publications (2)

Publication Number Publication Date
EP0406527A1 EP0406527A1 (fr) 1991-01-09
EP0406527B1 true EP0406527B1 (fr) 1993-09-08

Family

ID=6384126

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90106688A Expired - Lifetime EP0406527B1 (fr) 1989-07-01 1990-04-06 Dispositif d'entraînement de deux pompes à huile pour moteur à combustion interne à pistons alternatifs

Country Status (5)

Country Link
US (1) US5063895A (fr)
EP (1) EP0406527B1 (fr)
JP (1) JP2888934B2 (fr)
DE (2) DE3921715A1 (fr)
ES (1) ES2044291T3 (fr)

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DE102008036787A1 (de) * 2008-08-07 2010-02-11 Volkswagen Ag Hubkolben-Brennkraftmaschine

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Also Published As

Publication number Publication date
JPH0343613A (ja) 1991-02-25
JP2888934B2 (ja) 1999-05-10
EP0406527A1 (fr) 1991-01-09
US5063895A (en) 1991-11-12
DE59002620D1 (de) 1993-10-14
ES2044291T3 (es) 1994-01-01
DE3921715A1 (de) 1991-01-10

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