EP2876278A1 - Verteilergehäuse, das eine Vakuumpumpe umfasst, die mit einem Antriebsriemen von der Zusatzfassade eines Zylindergehäuses angetrieben wird - Google Patents

Verteilergehäuse, das eine Vakuumpumpe umfasst, die mit einem Antriebsriemen von der Zusatzfassade eines Zylindergehäuses angetrieben wird Download PDF

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Publication number
EP2876278A1
EP2876278A1 EP14190461.5A EP14190461A EP2876278A1 EP 2876278 A1 EP2876278 A1 EP 2876278A1 EP 14190461 A EP14190461 A EP 14190461A EP 2876278 A1 EP2876278 A1 EP 2876278A1
Authority
EP
European Patent Office
Prior art keywords
belt
pulley
vacuum pump
driven
drive
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.)
Withdrawn
Application number
EP14190461.5A
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English (en)
French (fr)
Inventor
Corentin Leborgne
Philippe Benayoun
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.)
PSA Automobiles SA
Original Assignee
Peugeot Citroen Automobiles SA
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 Peugeot Citroen Automobiles SA filed Critical Peugeot Citroen Automobiles SA
Publication of EP2876278A1 publication Critical patent/EP2876278A1/de
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F7/00—Casings, e.g. crankcases or frames
    • F02F7/0065—Shape of casings for other machine parts and purposes, e.g. utilisation purposes, safety
    • F02F7/0073—Adaptations for fitting the engine, e.g. front-plates or bell-housings
    • F02F2007/0078—Covers for belt transmissions

Definitions

  • the invention lies in the technical field of internal combustion engines and covers a timing case incorporating a vacuum pump driven by a drive belt of the accessory front of a cylinder block.
  • the invention proposes a solution for integrating and driving a vacuum pump housed in a timing case for generating an at least partial vacuum vacuum source that is particularly useful for providing assisted braking. of the vehicle.
  • the heat engines are sometimes equipped with a vacuum pump to generate a vacuum, especially but not only to ensure the proper functioning of the assisted braking.
  • a vacuum pump to generate a vacuum, especially but not only to ensure the proper functioning of the assisted braking.
  • the vacuum generation can be ensured by the natural suction of the engine at the intake plenum.
  • the addition of a vacuum pump is mandatory because the intake ducts are no longer in depression.
  • This vacuum pump can be driven at the end of one of the camshafts of the engine. In some cases, this drive is not feasible and the vacuum pump must then be driven by an electric motor.
  • the document FR-A-2 909 418 discloses a cylinder head cover comprising at least one camshaft rotatably mounted in the cylinder head cover with a vacuum pump integrated into a recess formed in the cylinder head cover at the end of the camshaft.
  • the camshaft directly drives a rotor of the vacuum pump, the vacuum pump being mounted on the end of the camshaft.
  • the problem underlying the invention is to perform the mechanical drive of a camshaft end vacuum pump in a timing case on any type of engine.
  • a device comprising a timing case comprising an intake camshaft and an exhaust camshaft, a vacuum pump being housed in the timing case and having a rotationally driven rotor for creating a vacuum in an associated conduit, characterized in that the vacuum pump is driven by a belt driven outside the timing case, the belt driving directly or indirectly the vacuum pump.
  • the technical effect is to obtain a mechanical drive of the vacuum pump with pulleys and a belt already present on the engine of the motor vehicle.
  • This mechanical solution is significantly less expensive than the use of an electric vacuum pump and does not require complicated and expensive adaptations of the timing case.
  • the drive is performed using a pulley whose axis of rotation is coaxial with the axis of the rotor of the vacuum pump.
  • the drive is carried out using at least one intermediate transmission element driven by the belt, this intermediate transmission element having an axis parallel to the axis of the rotor of the vacuum pump.
  • said at least one intermediate transmission element comprises a pulley, a toothed wheel, a friction wheel or a disengageable friction roller.
  • said at least one intermediate transmission element comprises several elements forming a system for reducing the rotation transmitted by the belt.
  • a channel for the passage of a portion of the belt is provided in the housing a channel for the passage of a portion of the belt.
  • the invention also relates to an assembly of a drive system by at least one belt and of such a device, wherein together said at least one belt is wound around a driving pulley and at least one driven pulley.
  • the driving and driven pulleys being external to the casing, the driving surface of said at least one belt being its inner face, characterized in that the vacuum pump is disposed outside said at least one belt and is driven directly or indirectly by the outer face of said at least one belt or is disposed at the interior of said at least one belt being driven directly or indirectly by the inner face of said at least one belt forming its driving surface.
  • the drive system with at least one belt comprises at least one return pulley disposed between the vacuum pump and the driving pulley or the said pulley. less a driven pulley.
  • the invention finally relates to a crankcase comprising such a set, the crankcase having an accessory facade receiving at least one accessory, the accessory or each accessory being associated with a driven pulley driven by a crankshaft pulley via a primary drive belt or a secondary drive belt, characterized in that one of the primary or secondary belts is the drive belt of the vacuum pump.
  • the accessory facade comprises several accessories, the primary drive belt being wound around an air conditioning pulley and an alternator pulley as driven pulleys and the secondary drive belt being wrapped around a belt.
  • water pump pulley as a driven pulley
  • the crankshaft pulley as a driving pulley comprising two raceways respectively associated with the primary belt and the secondary belt.
  • a conventional accessory front of a crankcase 13 of a combustion engine of a motor vehicle comprises an accessory belt 11 said primary belt driven by a crankshaft pulley 2 and driving a pulley 8 of the electric machine 8a or alternator-starter and an element for returning and / or tensioning the belt 5, here illustrated by two tensioners but can take other forms.
  • the primary primary belt 11 connects the crankshaft pulley 2 to the pulley 8 of the electric machine 8a.
  • the accessory front of the cylinder block 13 also advantageously carries an air conditioning compressor pulley 4 and a water pump carrying a pulley 6 whose drive is provided by a secondary drive belt 7 located in a plane other than that of the primary belt 11, this secondary drive belt 7 being conventionally secured to the crankshaft pulley 2 by rotating on a raceway on the crankshaft pulley 2 other than that of the primary belt 11.
  • FIGS. 2 to 4 show a timing case 1 in addition to a crankshaft pulley 2 and a water pump pulley 6, the aforementioned secondary belt 7 driving the water pump 6 by transmitting to it the rotational movement of the crankshaft pulley 2.
  • the distribution casing 1 comprises conventionally in its interior a first camshaft for intake valves of a heat engine and a second camshaft for exhaust valves of the engine, these two camshafts not being visible to these figures.
  • the timing case 1 includes also a camshaft drive system which may comprise a transmission means of the belt or chain type coupling as a first drive means a sprocket integral with the crankshaft with a second respective drive means in the form of a pinion drive for each camshaft, the drive system is also not visible in these figures.
  • the present invention provides for housing inside the distribution casing 1 a vacuum pump 10, visible to the figure 4 and driving the vacuum pump 10 other than by rotation of one of the camshafts or by a specifically dedicated electric motor.
  • the vacuum pump 10 is driven into the distribution case 1 by one of the two belts 7, 11 provided on the accessory front of the cylinder block 13 of the associated engine.
  • the belt used of the accessory facade for driving the vacuum pump 10 is the secondary drive belt 7 connecting the water pump pulley 6 to the crankshaft pulley 2, which is not limiting.
  • the drive is by the back of the secondary drive belt 7.
  • the vacuum pump 10 can be driven by the back of the secondary belt 7 or primary belt 11, since this is made possible because the torque levels to be driven for a vacuum pump 10 are compatible with this. kind of training by being relatively low.
  • the vacuum pump 10 is thus housed in the distribution casing 1 and has a rotor, visible at the figure 5 under the reference 10a, rotated for the creation of a vacuum in an associated conduit.
  • This duct can separate into several ducts which open respectively to an accessory requiring the creation of a depression.
  • the vacuum pump 10 is driven by a belt 7 driven outside the distribution casing 1, the belt 7 directly or indirectly driving the vacuum pump 10.
  • the vacuum pump 10 may form one and the same piece with the distribution casing 1 or be secured in a removable manner or not with the casing 1.
  • the drive of the vacuum pump 10 is said direct when it is applied directly to the vacuum pump 10.
  • the drive is called indirect, for example using at least one pulley concentric with the rotor 10a of the vacuum pump 10 and / or at least one pulley or friction roller whose axis is parallel to that of the rotor 10a of the vacuum pump 10, the rotor 10a being visible at the figure 5 .
  • At least one intermediate transmission element 3 between the drive belt, the Figures 2 to 4 the secondary drive belt 7, and the vacuum pump 10.
  • Figures 2 to 4 said at least one transmission intermediate element 3 may be a gear reduction system, a pulley or a friction wheel. It is a pulley or a friction wheel that is shown to Figures 2 to 4 . It is also possible to use a disengageable friction roller.
  • the body of the vacuum pump 10 and the distribution casing 1 are secured together forming for example a single piece.
  • the body of the vacuum pump 10 which closes the distribution casing 1, a cover 1a covering on one face of the distribution casing 1 the vacuum pump 10.
  • the rotor 10a of the vacuum pump 10 can carry a coaxial drive pulley to the rotor 10a.
  • a pulley can also be provided as an intermediate transmission element 3, this pulley being offset with respect to the axis of the rotor 10a, its axis advantageously being parallel to the axis of the rotor 10a of the pump.
  • the figure 5 shows a crankshaft pulley 2 having two raceways 2a and 2b for respectively the primary belt and the secondary drive belt 7, only the secondary belt 7 being shown in this figure.
  • the secondary drive belt 7 transmits the rotational movement of the crankshaft pulley 2 to the water pump pulley 6, the secondary drive belt 7 passing through the second race 2b around the crankshaft pulley 2.
  • a friction roller as an intermediate transmission element 3 drives the vacuum pump 10 or a pulley coaxial with the axis of the rotor 10a of the vacuum pump 10.
  • one of the drive belts of the accessory facade here the secondary drive belt 7 is also used for the direct or indirect drive of the vacuum pump 10 having a rotor 10a.
  • the drive shown is indirect, the secondary drive belt 7 driving an intermediate transmission element 3, itself driving the vacuum pump 10, with or without the possible presence of a pulley coaxial with the vacuum pump 10 .
  • a first embodiment of the drive of the vacuum pump 10 is by the secondary drive belt 7 between the crank pulley 2 and the water pump pulley 6. This is the back of the belt 7 , that is to say its outer surface, which serves to drive the intermediate transmission element 3 which transmits it to the vacuum pump 10.
  • a second embodiment of the vacuum pump drive 10 is effected by the secondary drive belt 7 between the crankshaft pulley 2 and the water pump pulley 6.
  • the vacuum pump 10 is included in the passage of the belt 7 with the crankshaft pulley 2 and the water pump pulley 6, thus being positioned inside the secondary belt 7. It is therefore the striated face of the belt 7 which serves for the driving the vacuum pump 10 as a work surface, which drive may or may not include a coaxial drive pulley at the vacuum pump 10.
  • a return element or winder 5 may be provided on the path of the secondary drive belt 7, for example between the water pump pulley 6 and the vacuum pump 10.
  • a third embodiment of the vacuum pump 10 is driven by the primary drive belt 11 between the crankshaft pulley 2, the air conditioning pulley 4 and the alternator pulley 8.
  • the vacuum pump 10 is outside the passage of the primary drive belt 11. It is therefore the back of the primary belt 11, that is to say its outer surface, which serves to drive the pump in vacuum 10, with in this embodiment the incorporation of an intermediate transmission element 3 between the belt 11 and the vacuum pump 10 with or without coaxial pulley.
  • a fourth embodiment of the vacuum pump 10 is also driven by the primary drive belt 11 between the crankshaft pulley 2, the air conditioning pulley 4 and the alternator pulley 8.
  • Vacuum 10 with or without an associated coaxial pulley is inside the primary drive belt 11. This is the working surface, ie the internal or striated portion of the belt.
  • primary 11 which serves to drive the vacuum pump 10, with in this embodiment the incorporation of one or more return elements 5 and / or tensioners 12 on the passage of the primary belt 11.
  • Such a Tensioning element 12 advantageously comprises a dynamic eccentric to be able to effect a tensioning action on the primary belt 11.
  • a fourth embodiment of the vacuum pump 10 is driven by the secondary drive belt 7 between the crankshaft pulley 2 and the water pump pulley 6.
  • the vacuum pump 10 is located at 7 is the back of the secondary belt 7 or its outer surface which serves to drive the intermediate transmission element 3 which transmits it to the vacuum pump 10.
  • this element transmission intermediate 3 may be in the form of a disengageable friction roller.
  • the water pump 6 and the vacuum pump 10 can be exchanged, that is to say that it is the water pump pulley 6 which is outside the secondary belt 7, the water pump 6 being driven by an intermediate transmission element 3 in the form of a disengageable friction roller, the vacuum pump 10 replacing the water pump pulley 6 being disposed inside the secondary belt 7.
  • each of the primary drive belt 11 and the secondary drive belt 7 adhesively transmits a portion of the mechanical power of the crankshaft pulley 2 to the accessories, for example the air conditioning pulley. 4 and the alternator pulley 8 for the primary belt 11 or the water pump pulley 6 for the secondary belt 7.
  • the primary belt 11 or the secondary belt 7 can also transmit mechanical power to the vacuum pump 10 either directly or via a pulley coaxial to the rotor of the vacuum pump or via a reduction system comprising at least one intermediate transmission element with or without such a coaxial pulley.
  • the vacuum pump 10 and its drive is of the Oldham seal type, that is to say that a transmission of a rotational movement is provided between two parallel axes, namely the axis of a drive pulley parallel to the axis of the rotor of the vacuum pump 10.
  • This provides excellent overall compactness as long as the distance between the axes remains low.
  • the air duct or ducts leaving the vacuum pump 10 are advantageously connected to the various vacuum consumers, for example assisted braking.
  • the lubrication of the pump 10 can be ensured by bubbling in the lubrication system of the distribution drive, which is the case for a wet chain or belt as a transmission means coupling the first integral drive means crankshaft with the respective second drive means for each camshaft.
  • this lubrication can be provided by a dedicated lubrication circuit derived from the circuit of the engine.
  • the integration of the vacuum pump 10 in the timing case 1 allows the economy of a mounting part. In addition, this allows the realization of a vacuum pump 10 driven mechanically on an atmospheric engine or a turbocharged engine without modification of the crankcase 13.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
EP14190461.5A 2013-11-22 2014-10-27 Verteilergehäuse, das eine Vakuumpumpe umfasst, die mit einem Antriebsriemen von der Zusatzfassade eines Zylindergehäuses angetrieben wird Withdrawn EP2876278A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1361543A FR3013772B1 (fr) 2013-11-22 2013-11-22 Carter de distribution integrant une pompe a vide entrainee par une courroie d'entrainement de la facade accessoire d'un carter cylindres

Publications (1)

Publication Number Publication Date
EP2876278A1 true EP2876278A1 (de) 2015-05-27

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EP14190461.5A Withdrawn EP2876278A1 (de) 2013-11-22 2014-10-27 Verteilergehäuse, das eine Vakuumpumpe umfasst, die mit einem Antriebsriemen von der Zusatzfassade eines Zylindergehäuses angetrieben wird

Country Status (2)

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EP (1) EP2876278A1 (de)
FR (1) FR3013772B1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110506155A (zh) * 2017-04-14 2019-11-26 Ifp新能源公司 与特别是用于机动车辆的内燃机相关联的用于闭合回路、特别是朗肯循环型闭合回路的涡轮泵组件

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07189728A (ja) * 1993-12-28 1995-07-28 Nissan Motor Co Ltd 車両用エンジン駆動式負圧ポンプ装置の取付け構造
JP2003074411A (ja) * 2001-09-03 2003-03-12 Honda Motor Co Ltd エンジンの負圧ポンプ配管構造
FR2909418A3 (fr) 2006-12-01 2008-06-06 Renault Sas Couvre culasse de moteur a combustion interne et moteur comportant une telle culasse
EP1985813A2 (de) * 2007-04-27 2008-10-29 Schwäbische Hüttenwerke Automotive GmbH & Co. KG Nockenwellenphasensteller und Vakuumpumpe für eine Brennkraftmaschine
CN102434308A (zh) * 2011-11-17 2012-05-02 东风朝阳柴油机有限责任公司 高度集成链轮室系统
DE202013102941U1 (de) * 2013-07-03 2013-07-31 Ford Global Technologies, Llc Brennkraftmaschine mit flüssigkeitsgekühltem Zylinderkopf und flüssigkeitsgekühltem Zylinderblock

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07189728A (ja) * 1993-12-28 1995-07-28 Nissan Motor Co Ltd 車両用エンジン駆動式負圧ポンプ装置の取付け構造
JP2003074411A (ja) * 2001-09-03 2003-03-12 Honda Motor Co Ltd エンジンの負圧ポンプ配管構造
FR2909418A3 (fr) 2006-12-01 2008-06-06 Renault Sas Couvre culasse de moteur a combustion interne et moteur comportant une telle culasse
EP1985813A2 (de) * 2007-04-27 2008-10-29 Schwäbische Hüttenwerke Automotive GmbH & Co. KG Nockenwellenphasensteller und Vakuumpumpe für eine Brennkraftmaschine
CN102434308A (zh) * 2011-11-17 2012-05-02 东风朝阳柴油机有限责任公司 高度集成链轮室系统
DE202013102941U1 (de) * 2013-07-03 2013-07-31 Ford Global Technologies, Llc Brennkraftmaschine mit flüssigkeitsgekühltem Zylinderkopf und flüssigkeitsgekühltem Zylinderblock

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110506155A (zh) * 2017-04-14 2019-11-26 Ifp新能源公司 与特别是用于机动车辆的内燃机相关联的用于闭合回路、特别是朗肯循环型闭合回路的涡轮泵组件

Also Published As

Publication number Publication date
FR3013772A1 (fr) 2015-05-29
FR3013772B1 (fr) 2015-12-25

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