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WO2018206281A1 - Moteur à combustion interne et procédé de montage d'un moteur à combustion interne - Google Patents

Moteur à combustion interne et procédé de montage d'un moteur à combustion interne Download PDF

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Publication number
WO2018206281A1
WO2018206281A1 PCT/EP2018/060321 EP2018060321W WO2018206281A1 WO 2018206281 A1 WO2018206281 A1 WO 2018206281A1 EP 2018060321 W EP2018060321 W EP 2018060321W WO 2018206281 A1 WO2018206281 A1 WO 2018206281A1
Authority
WO
WIPO (PCT)
Prior art keywords
actuator
internal combustion
combustion engine
cover
actuator holder
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.)
Ceased
Application number
PCT/EP2018/060321
Other languages
German (de)
English (en)
Inventor
Julian Herrmann
Daniel HOHMANN
Sebastian Unger
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.)
Volkswagen AG
Original Assignee
Volkswagen 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 Volkswagen AG filed Critical Volkswagen AG
Publication of WO2018206281A1 publication Critical patent/WO2018206281A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

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
    • F01L1/024—Belt 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
    • F01L1/34—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
    • 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
    • F01L2001/3443—Solenoid driven 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
    • 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
    • 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
    • F01L2001/3445—Details relating to the hydraulic means for changing the angular relationship
    • F01L2001/34479—Sealing of phaser devices
    • 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
    • F01L2301/00—Using particular materials
    • 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
    • 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
    • F01L2820/00—Details on specific features characterising valve gear arrangements
    • F01L2820/03—Auxiliary actuators
    • F01L2820/031—Electromagnets

Definitions

  • the invention relates to an internal combustion engine and a method for assembling such an internal combustion engine.
  • the valve drive for a (reciprocating) internal combustion engine comprises at least one, regularly two intake and exhaust valves for each combustion chamber of the internal combustion engine. These intake and exhaust valves are usually controlled by means of camshafts, with internal combustion engines with more than two valves per cylinder regularly two camshafts are used.
  • the Crankshaft is changeable by means of a phaser.
  • the phase divider comprises a vane rotor connected to the camshaft and a housing forming the pulley of the camshaft, which serves as a stator of the phaser. Between the vane rotor and the stator of the phaser several pressure chambers are formed, which, controlled by a phaser valve, if necessary, can be filled with oil to the vane rotor (and thus the camshaft) relative to the housing (and thus the crankshaft) with the aim of To change the valve timing.
  • the phaser valve is arranged centrally within the vane rotor and comprises an axially displaceable with respect to the axis of rotation of the phaser or the camshaft valve body which in
  • a displacement of the valve body is by means of a
  • electromechanical actuator causes the outside with a "Engine cover” of the internal combustion engine, which is probably a cylinder head cover or a cover for the timing drive is screwed, wherein a main part of the actuator including an actuating pin, which contacts the valve body with one end, extends through a through opening of the cover.
  • a sealing ring holder is provided with a rohrformigen section, which is screwed on the inside with the engine cover and extends in the longitudinal axial direction over a rohrformigen portion of the housing of the phaser, whereby the sealing ring holder and the housing of the phaser a partially with the for actuating the
  • Phase adjuster used to limit oil-filled interior space. To seal this
  • Sections formed gap a radial shaft seal arranged.
  • a disadvantage resulting from the embodiment of the known from DE 10 2013 223 1 12 A1 internal combustion engine is that for assembly of the internal combustion engine, the sealing ring holder must first be screwed to the inside of the engine cover, after which only the engine cover can be mounted , For assembly, however, the sealing ring holder must be as exactly coaxial with the rohrformigen
  • Sealing ring holder probably only rarely sufficiently coaxially aligned with the rohrformigen section of the housing of the phaser and a subsequent adjustment due to the screw connection with the inside of the engine cover does not seem possible.
  • the invention had the object of specifying a generic internal combustion engine, the simplest possible assembly / disassembly of the actuator for the
  • Patent claim 10 Advantageous embodiments of the invention
  • an internal combustion engine is provided with a motor housing and a valve drive, wherein the valve drive comprises a camshaft, a phase splitter connected to the camshaft and an actuator for actuating the phaser.
  • the valve drive comprises a camshaft, a phase splitter connected to the camshaft and an actuator for actuating the phaser.
  • (at least) the phase divider and the actuator limit an interior space.
  • the internal combustion engine further comprises a cover at least partially surrounding the phase divider and an actuator holder, wherein the (at least) the phase divider and the actuator (and possibly also of the actuator holder) limited interior space by means disposed between the phase divider and the actuator holder sealing ring (in particular against a liquid outlet) is sealed.
  • Such an internal combustion engine is characterized in that the actuator holder on the outside of the cover fitting and (preferably releasably) is connected to the cover and / or the motor housing and further the actuator to the actuator holder (preferably releasably) is attached.
  • the actuator (optionally with an actuator housing) preferably also lies on the outside, i. on the side facing away from the phase divider, on the actuator holder.
  • the term "actuator” is understood to mean an actuating device which can be actuated (in particular by a control device) and which comprises an actuating element which is moved as a result of the activation, whereby this movement of the actuating element leads to an adjustment of the phaser
  • the actuator can, for example, be electromechanical, in particular electromagnetically designed so that the movement of the
  • Actuator can be based in particular on a done in response to the generation of a magnetic field.
  • the actuator can also be hydraulically or pneumatically actuated, for example.
  • the inventive design of the also used for exact positioning of the sealing ring Aktuatorhalters as a separate, ie as differing from both the cover and the actuator component has, on the one hand the advantage that this positioned in a relatively simple manner as accurately as possible with respect to the phaser and in particular centered can be, what for the realization of a sufficient sealing effect of
  • Sealing ring is of particular importance, since the phase divider in the operation of the
  • a sealing of the at least of the phase divider and the actuator limited interior can be particularly useful or necessary, because this can represent a portion of a hydraulic supply path for the phase divider and this can thus at least partially filled with a liquid, such as an oil.
  • Aktuatorhalters as a separate component allows the implementation of a method according to the invention, which is characterized in that the actuator holder initially positioned relative to the phase divider and thereby in particular centered (relative to an axis of rotation of the camshaft or the
  • the actuator holder with the cover and / or the motor housing (immovable) is connected and only then the actuator is attached to the actuator holder.
  • the actuator holder and / or the phase divider in the mounted state of the internal combustion engine
  • the fitting surface of the actuator holder and / or the phaser can preferably be (in each case) designed as an inner surface. The actuator holder can then with its fitting surface on a first
  • the mounting tool connected to the actuator holder are fitted with a second counter-fitting portion on the mating surface of the phaser.
  • the first mating portion and / or the second mating portion may preferably be in the form of a circumferential mating surface.
  • centering of the actuator holder relative to the phase divider is to be ensured in particular by means of the assembly tool, it may also be sufficient if such a counterpart fitting section has at least three contact points or contact surfaces lying on a circular path which define a center or a central longitudinal axis which is the same the associated fitting surface of the Aktuatorhalters or the phaser is centrally or coaxially aligned.
  • fitting surface or “fitting portion” is understood to mean a surface or a section of a component (actuator holder or phase splitter) which is intended to have a "counter-fit surface” or a "counter-fit surface”
  • the method according to the invention provides that the actuator holder is connected to the cover and / or the motor housing (immovable) in order to move through the actuator
  • an internal combustion engine may comprise fastening means for fastening the actuator holder to the cover and / or the motor housing, which allow a fixed positioning of the actuator holder within a defined tolerance compensation range with respect to its orientation radially to the axis of rotation of the camshaft or the phaser.
  • These attachment means may more preferably one or more
  • Through openings of the Aktuatorhalters and in receiving openings of the cover and / or the motor housing extending fasteners comprise, wherein the
  • the fastening elements can be designed as screws, which in internal thread of the
  • Entrance openings of the actuator holder and / or the motor housing intervene.
  • An excess of the through holes of the actuator holder compared to the outside dimensions of the (threaded) bolts of the screws allows the actuator holder after the
  • Positioning / centering has been connected to the cover or the motor housing, because then the assembly tool could be removed without this would be associated with the risk of unintentional change in the positioning / centering of Aktuatorhalters.
  • the actuator can then be connected to the actuator holder, wherein preferably that fitting surface of the Aktuatorhalters is used, previously for the
  • Assembly tool was used to position / center the actuator with respect to the phaser.
  • the actuator can this one to the fitting surface of the
  • Actuator holder mating mating portion preferably a closed circumferential mating surface, so that the actuator is held substantially free of play (with respect to the axis of rotation of the camshaft or the phaser shaft extending directions) in or on the actuator holder, and thus on the previously positioned / centered actuator holder positioned / centered relative to the phase divider.
  • phaser valve integrated centrally in the phase divider having.
  • a phaser valve may comprise a valve body that is displaceable coaxially or parallel to an axis of rotation of the camshaft. This valve body can continue to be actuated preferably by means of a coaxial or parallel to a rotational axis of the camshaft sliding actuator of the actuator.
  • valve body of the phaser valve during operation of the internal combustion engine can be driven in rotation, while the actuator of the actuator simultaneously performs no corresponding rotational movement, can be as exact as possible centering of Aktuatorhalters and thus the actuator to the axis of rotation of the phaser a respect
  • the engine housing of an internal combustion engine according to the invention can be in particular a cylinder (crank) housing and / or a cylinder head housing of the internal combustion engine.
  • the cover may be connected (preferably detachably) to the motor housing.
  • the cover may also be (preferably detachable) with at least one other component of the internal combustion engine and / or with an internal combustion engine
  • Motor housing formed gap a preferably closed circumferential sealing element is arranged. This can prevent that via this gap in or out of the at least partially enclosed by the cover inner volume particles and / or liquids on / emerge, on the other hand to contamination of the recorded within this inner volume components of the internal combustion engine and / or the outside Cover arranged components could result.
  • Seal element is arranged.
  • this sealing element is integrated in the actuator holder and, accordingly, is also connected to the actuator holder when the actuator holder is detached from the cover.
  • the sealing ring which is arranged between the phase divider and the actuator holder, may preferably be a Radialwellendichtnng because by this on relative Inexpensive manner a good seal between a static component, here the actuator holder, and a rotating component, here the phase divider, formed gap can be realized.
  • the sealing tread of the radial shaft sealing ring can contact either the phase divider or the actuator holder. It is preferred that the sealing tread of the (radial) sealing ring contacts the phase divider and the (radial) sealing ring is thus statically integrated into the internal combustion engine.
  • Axial shaft seal may be provided.
  • the sealing ring may preferably subsequently be non-positively and / or positively connected to the holding this component (actuator holder or phase adjuster (housing)).
  • this component actuator holder or phase adjuster (housing)
  • the sealing ring for example, in a designated, circumferential
  • the sealing ring may also have been made integral with the manufacture of the phaser (housing) or actuator holder.
  • an actuator holder possibly made of plastic
  • an internal combustion engine according to the invention has particular advantages when it is a dry running gear and in particular a dry running (tooth) belt drive for transmitting drive power between a
  • a seal of possibly filled with a liquid and in particular oil, limited by the phase divider and the actuator interior is relevant.
  • the invention also relates to a motor vehicle, in particular a wheel-based motor vehicle (preferably a car or truck), with an internal combustion engine according to the invention.
  • the internal combustion engine can preferably be provided for (direct or indirect) provision of traction drive power for the motor vehicle.
  • Components are thus to be understood that they are present at least once and may be present more than once.
  • FIG. 1 shows a section of an internal combustion engine according to the invention
  • FIG. 2 shows the internal combustion engine according to FIG. 1 with the cover for the camshaft drive removed;
  • Hg 3 the actuator holder of the internal combustion engine with the sealing ring held thereon in a first perspective view
  • FIG. 4 shows the actuator holder according to FIG. 3 in a second perspective view
  • FIG. 6 shows an actuator holder for an internal combustion engine according to the invention according to an alternative embodiment in a perspective view
  • FIG. 7 shows the actuator holder according to FIG. 6 in a view from the front
  • Fig. 7 and 9 shows a section through the Aktuatorhalter along the sectional plane IX - IX in the
  • this has a motor housing, a motor housing, a motor housing, a motor housing, a motor housing, a motor housing, a motor housing, a motor housing, a motor housing, a motor housing, a motor housing, a motor housing, a motor housing, a motor housing, a motor housing, a motor housing, a motor housing, a motor housing, a motor housing, a motor housing, a motor housing, a motor housing, a motor housing, a motor housing, a motor housing, a motor housing, a motor housing, a motor housing, a motor housing, a motor housing, a motor housing, a motor housing, a motor housing, a motor housing, a motor housing, a motor housing, a motor housing, a motor housing, a motor housing, a motor housing, a motor housing, a motor housing, a motor housing, a motor housing, a motor housing, a motor housing, a motor housing, a motor housing, a motor housing, a motor housing, a
  • Cylinder housing 10 and a connected to the cylinder housing 10 cylinder head housing 12 includes (see Fig. 2).
  • a piston (not shown) is movably guided.
  • the cylinder walls define, together with the upper sides of the pistons and with combustion chamber roofs formed by the cylinder head housing, combustion chambers in which, in a known manner, fuel-fresh gas mixtures which are offset in time are combusted.
  • the movements of the pistons caused by these burns in the combustion chambers are transmitted via connecting rods (not shown) to a crankshaft (not shown), which is driven in rotation in this way.
  • this valve train comprises two camshafts, one of which, hereinafter also referred to as intake camshaft, for example, all intake valves and the other camshaft, hereinafter also referred to as exhaust camshaft actuated all the exhaust valves.
  • intake camshaft for example, all intake valves
  • exhaust camshaft actuated all the exhaust valves.
  • the camshafts are driven by the crankshaft via a dry-running toothed belt drive.
  • the toothed belt drive comprises in each case one with each of the camshaft and the crankshaft rotatably connected toothed belt wheel 14, tension and guide rollers (not visible) and guided over the toothed belt wheels 14 and the tension and guide rollers timing belt 16th
  • phase splitter 18 is provided for the intake camshaft. This allows the timing of the intake valves to be adjusted to the respective one
  • the phase splitter 18 is integrated in a known manner (cf., for example, DE 10 2013 223 1 12 A1) into the toothed belt wheel 14 of the intake camshaft and comprises (see FIG rotatably connected to the intake camshaft vane rotor 20 which is rotatably disposed within limits within a stator 22 of the phaser 18.
  • the stator 22 forms on its substantially cylindrical outer surface a tooth contour for engagement with the teeth of the toothed belt 16 (see Fig. 1 1).
  • a plurality of pressure chambers are formed, which, controlled by a phaser valve, can be selectively filled with a liquid, in particular an oil, in order to define the vane rotor 20 within the stator 22 whereby the phase angle between the intake camshaft connected to the vane rotor 20 and the stator 22 rotationally drivingly connected to the crankshaft via the toothed belt 16 is changed, in accordance with the objective of changing the timing of the intake valves.
  • the phaser valve is integrated in a hub 24 of the phaser 18 (see Fig. 5), by means of which the phaser 14 integrating the phase divider 18 is connected to the intake camshaft.
  • the phaser valve comprises a not shown in FIG. 5
  • Valve body which is acted upon by means of a biased spring element 34, also not shown in the direction of (the left in FIG. 5) end position and its position within a valve housing formed by the hub 24 by means of an actuator 26 is variable.
  • the valve body is along the axis of rotation 28 of the
  • Valve body releases or closes these inlet and outlet openings 30, which are integrated in the valve housing, whereby the filling and emptying of the pressure chambers of the phaser 18 can be controlled.
  • the actuator 28 is connected by means of screw connections to an actuator holder 32 formed, for example, as an aluminum cast component, wherein the actuator 28 is provided on the outside, i. on the side facing away from the phase divider 18 side, abuts the actuator holder 32.
  • an actuator holder 32 formed, for example, as an aluminum cast component, wherein the actuator 28 is provided on the outside, i. on the side facing away from the phase divider 18 side, abuts the actuator holder 32.
  • a housing of the actuator 26 through openings, through which
  • Threaded bolts can extend from screws 36 which are screwed into corresponding threaded openings 38 of the Aktuatorhalters 32 (see Fig. 3, 4).
  • the actuator holder 32 itself is also connected via screw connections to a cover 40 of the internal combustion engine (see Fig. 1).
  • the actuator holder 32 also has two passage openings 42 (see Fig. 4) through which threaded bolts of screws 44 extend, which are screwed into corresponding threaded openings of the cover 40.
  • An inter alia of the phase divider 18, the Akt.uat.or 26 and the actuator holder 32 limited interior 46 is partially filled with the liquid used for the adjustment of the phaser 18.
  • a plurality of sealing elements 48, 50 are provided in order to seal this inner space 46 against a liquid outlet. This seal is in the illustrated internal combustion engine of particular importance, because the toothed belt drive is designed to run dry and consequently a transfer of liquid from the interior 46 in the area of the toothed belt drive should be avoided as possible.
  • a first sealing element 48 is disposed between the actuator 26 and the actuator holder 32 (see Fig. 5). Since these components are not moved relative to each other during operation of the internal combustion engine, this first sealing element 48 may be formed as a simple static sealing element, for example as a commercially available O-ring.
  • a second sealing element 50 is designed as a sealing ring and arranged between a circumferential about the axis of rotation 28, rohrformigen portion 52 of the Aktuatorhalters 32 and also about the rotation axis 28, rohrformigen portion 54 of the stator 22 of the phaser 18.
  • the sealing ring 50 is designed as a dynamic sealing element, in the specific embodiment as a radial shaft seal.
  • Actuator holder 32 pressed sealing ring 50 is a possible coaxial alignment of the intended for a contact with the sealing ring 50 inner surface of rohrformigen portion 52 of Aktuatorhalters 32 to the intended for contact with a running surface of the sealing ring 50 outer surface of rohrformigen portion 54 of the stator 22 of the phaser 18th necessary.
  • a suitable mounting tool (not shown) in the context of the assembly of the internal combustion engine, specifically in the context of the attachment of the Aktuatorhalters 32 to the cover 40.
  • the actuator holder 32 is first attached to the mounting tool, wherein a
  • Actuator holder would lead.
  • the assembly tool can be removed, which then by the Aktuatorhalter 32 and specifically the mating surface 56 of
  • Aktuatorhalters 32 limited central receiving opening 60 is released for receiving the actuator 26.
  • the actuator 26 may then be mounted on the actuator holder 32, with one portion extending into the receiving opening 60 of the Aktuatorhalters 32, while another portion having a relation to the receiving opening 60 of the Aktuatorhalters 32 larger cross-sectional dimension, the outside, i. on the side facing away from the phase divider 18 side, abuts the actuator holder 32.
  • the portion of the actuator 26 projecting into the receiving opening 60 of the actuator holder 32 forms a mating surface 62 complementary to the mating surface 56 of the actuator holder 32, whereby the actuator 26 relative to the actuator holder 32 and, due to the previously performed centering of the Aktuatorhalters 32 relative to the phase divider 18, is also centered relative to the phase divider 18 (in each case based on the axis of rotation 28).
  • the toothed belt drive of the internal combustion engine runs to protect against contamination and also for safety reasons in a substantially completely closed
  • a covering of the toothed belt drive is carried out (at least partially) by means of the cover 40, which, since it serves to hold the actuator holder 32 and via this also the actuator 26, preferably made of metal, in particular of a light metal (e.g.
  • Aluminum and preferably may be formed as a cast component.
  • the cover 40 is via screw (not shown) with the cylinder head housing 12 and
  • Receiving space includes the cover 40 at the intended to rest on the cylinder head housing 12 and possibly also the cylinder housing O end faces (edges) as Sealing cord trained sealing element (not visible), whereby the gap formed between the cover 40 and the cylinder head housing 12 and optionally the cylinder housing 10 is sealed.
  • Sealing cord trained sealing element not visible
  • Sealing element 34 which is integrated in the actuator holder 32 and the between the
  • Actuator holder 32 and the cover 40 formed gap seals.
  • the actuator holder 32 shown in FIGS. 6 to 8 differs from that according to FIGS. 1 to 5 essentially in that the threaded openings 38, into which the screws 36, which are used for fastening the actuator 26, are screwed, as Blind holes are formed, while those in the actuator holder 32 shown in FIGS. 1 to 5 are formed as through holes.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Valve Device For Special Equipments (AREA)

Abstract

L'invention concerne un moteur à combustion interne comprenant un carter de moteur et un mécanisme de distribution, le mécanisme de distribution comportant un arbre à cames, un déphaseur (18) relié à l'arbre à cames et un actionneur (26) destiné à actionner le déphaseur (18). Le déphaseur (18) et l'actionneur (26) délimitent un espace intérieur (46). Le moteur à combustion interne comporte en outre un capot (40) entourant au moins en partie le déphaseur (18) et un support (32) d'actionneur, l'espace intérieur (46) délimité par le déphaseur (18) et l'actionneur (26) étant étanchéifié au moyen d'une bague d'étanchéité (50) agencée entre le déphaseur (18) et le support (32) d'actionneur. Le support (32) d'actionneur s'applique extérieurement contre le capot (40) et est relié au capot (40) et/ou au carter de moteur. En outre, l'actionneur (26) est fixé au support d'actionneur. L'actionneur (26) s'applique de préférence également extérieurement, c'est-à-dire sur la face opposée au déphaseur (18), contre le support (32) d'actionneur. Le fait de réaliser le support (32) d'actionneur également utilisé pour le positionnement exact de la bague d'étanchéité (50) sous la forme d'un élément séparé, c'est-à-dire différent aussi bien du capot (40) que de l'actionneur (26), présente entre autre l'avantage de pouvoir être positionné, et en particulier centré facilement le plus exactement possible par rapport au déphaseur (18), ce qui est particulièrement important pour la réalisation d'un effet d'étanchéité suffisant de la bague d'étanchéité (50).
PCT/EP2018/060321 2017-05-11 2018-04-23 Moteur à combustion interne et procédé de montage d'un moteur à combustion interne Ceased WO2018206281A1 (fr)

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DE102019105204A1 (de) * 2019-03-01 2020-09-03 Schaeffler Technologies AG & Co. KG Nockenwellenversteller mit verbesserter Anordnung eines Radialwellendichtrings
DE102019118300A1 (de) * 2019-07-05 2021-01-07 Bayerische Motoren Werke Aktiengesellschaft Haubenvorrichtung für eine Verbrennungskraftmaschine und Verbrennungskraftmaschine mit einer Haubenvorrichtung
DE102020006867A1 (de) 2020-11-09 2022-05-12 Daimler Ag Verbrennungskraftmaschine für ein Kraftfahrzeug, sowie Verfahren zum Starten einer solchen Verbrennungskraftmaschine

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DE102013223112A1 (de) 2012-12-04 2014-06-05 Denso Corporation Ventilzeiteinstellungssteuerungsgerät
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