WO2015014352A1 - Mécanisme de distribution pour moteur à combustion interne d'un véhicule, basculeur et élément de support pour mécanisme de distribution d'un moteur à combustion interne d'un véhicule - Google Patents

Mécanisme de distribution pour moteur à combustion interne d'un véhicule, basculeur et élément de support pour mécanisme de distribution d'un moteur à combustion interne d'un véhicule Download PDF

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Publication number
WO2015014352A1
WO2015014352A1 PCT/DE2014/200226 DE2014200226W WO2015014352A1 WO 2015014352 A1 WO2015014352 A1 WO 2015014352A1 DE 2014200226 W DE2014200226 W DE 2014200226W WO 2015014352 A1 WO2015014352 A1 WO 2015014352A1
Authority
WO
WIPO (PCT)
Prior art keywords
support
transverse axis
lever
combustion engine
internal combustion
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/DE2014/200226
Other languages
German (de)
English (en)
Inventor
Siegfried Tisch
Michael Schewe
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.)
Schaeffler Technologies AG and Co KG
Original Assignee
Schaeffler Technologies AG and Co 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 Schaeffler Technologies AG and Co KG filed Critical Schaeffler Technologies AG and Co KG
Publication of WO2015014352A1 publication Critical patent/WO2015014352A1/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
    • F01L1/12—Transmitting gear between valve drive and valve
    • F01L1/18—Rocking arms or levers
    • F01L1/185—Overhead end-pivot rocking arms

Definitions

  • the invention relates to a Ventiftrieb for a Brennkraffmaschine a vehicle, a drag lever and a Abstutzelement for a valve train of an internal combustion engine, a vehicle according to the preamble of Palent compressions 1 and 9 and 10 in the manner defined in more detail.
  • the drag lever has a Ball quill for pivoting support on a support element with a ball head on.
  • Kugelkalotte and ball head are complex to produce.
  • the support via spherical cap and ball head also requires a large width of the Schtepphebels, which represents a critical and limiting structural dimension for the design and freedom of movement of the cylinder head of the internal combustion engine in the area of the support elements.
  • an additional retaining clip between rocker arm and support member is required.
  • the retaining clip makes the manufacture and assembly particularly expensive, especially for sliding cam systems.
  • Oer invention is based on the object at a valve train, a drag lever and a support element of the aforementioned type to eliminate the disadvantages described.
  • the object is solved by the features of patent claim 1 and alternatively by the features of patent claim 9 or 10.
  • rocker arm and support element are secured by lateral lateral wear of the drag lever on the support of this against lateral tilting or jumping off during assembly.
  • a support-side adhesive clip between rocker arm and support element is thus avoided.
  • the width of the rocker arm in the region of the support element can be reduced.
  • the support element has a support head with a contact surface. which is in sliding contact with the support section.
  • the drag lever is to guide in Transverse axis direction on both sides of its Seiterwandabêten on opposite the GleitCount Structure limiting side surfaces on the support head on.
  • the drag lever can be applied to its side wall sections on the side surfaces of the support head, in particular in line or surface contact.
  • the cylindrical contact surface on the bearing section of the finger lever preferably forms an approximately 180 * in the direction of pivoting of the finger lever via a comprehensive cylinder calotte.
  • the cylinder calotte is preferably bounded on both sides in the transverse axis direction by the Sertenwandabitese. In this case, they form guide cheeks on both sides of the cylinder calotte, which bear on the support element on the opposite side surfaces of the support head for guiding the finger lever in the transverse axis direction. It is advantageous if a cylindrical sliding contact surface on the support element forms a standing in the pivoting direction of the rocker arm of about 180 ° extending cylinder head.
  • the drag lever can so with his Cylinderkalotte on the cylinder head of the support element similar to a Haibschaie a radial slide bearing grab and guided.
  • the drag lever is to guide in the transverse axis direction on both sides of its Settenwandabitesen on the opposite side surfaces of the cylinder head of the Ab mantements
  • a flat contact between the Settenwandabroughen of the finger lever and the side surfaces of the cylinder head of the Ab mantements is achieved when the Zyiinderkopf has transverse plane parallel flattened side surfaces in the transverse axis direction, where the rocker arm is applied to plane-parallel running Settenwandabroughen.
  • the width of the finger lever can be further reduced.
  • the sliding contact surfaces are preferably slightly convex in the transverse axis direction.
  • a slight compensating movement in the transverse or pivot axis direction on the sliding contact surfaces is made possible in a manner similar to that in a spherical plain bearing.
  • Oer valve drive described above may also have features of a follower lever or support element described below.
  • the object underlying the invention is also achieved by a Ab grossle- ment for a finger lever of a valve train of an internal combustion engine of a vehicle having a piston which is guided longitudinally in an end portion in a housing and can be acted upon with hydraulic fluid.
  • a sliding contact surface for pivotally supporting the drag lever is formed on a protruding end of the housing from the housing, wherein the sliding contact surface is cylindrical to a transverse axis of the piston.
  • piston, housing and Ventitepielaus producessvoriques form a so-called hydraulic Abetützelement
  • the object underlying the invention is further achieved by a drag lever for a Ventjltrieb an internal combustion engine of a vehicle which is supported at an end portion pivotable about a transverse axis with a support portion on a support element
  • the support portion has a cylindrical Gleitromeflache for pivoting Abstutzung on the support element.
  • the drag lever can be designed in particular as a roller rocker or Gleitschlepphebel.
  • Supporting element and / or rocker arms may have nuancesre features of the Ventütriefos described above.
  • FIG. 2 shows a longitudinal section of a valve drive according to the invention for an internal combustion engine of a vehicle in a first exemplary embodiment
  • FIG. 2 shows a cross section of the valve drive from FIG. 1,
  • Figure 3 is a perspective detail view of a finger lever for a
  • FIG. 5 shows a cross section of the finger lever of Figure 3
  • 6 shows a perspective side view of the support element from FIG. 6, a sectional view of a supporting element according to the invention in a second exemplary embodiment.
  • the exemplary valvetrain for an internal combustion engine of a vehicle shown by way of example in FIGS. 1 and 2 has a drag lever 1 and a support element 2 for the pivotable support of the rocker arm 1.
  • the valve drive is shown cut along the longitudinal axis of the finger lever 1.
  • the drag lever 1 is truncated at its support end portion with a support portion on corresponding Gleittitleflachen 4. 5 pivotally movable on a support element 2 to a transverse axis 3.
  • the support member 2 forms at its sliding contact surface 4 a support head on which the drag lever 1 is pivotally mounted on its Glerritchftache 5 of its support section on the support element 2.
  • the sliding lever 1 has a valve support 6. on which an unillustrated gas exchange valve of the internal combustion engine attacks.
  • An approximately centered rotatably mounted between the end portions arranged cam roller picks up the Nockenhubterrorism generated by a cam of a camshaft, not shown, and transmits them as a pivoting movement at the valve-end portion for actuating the valve seat 6 acting gas exchange valve.
  • the support element 2 has a piston which is guided at one end portion along a housing 7 in a movable manner. In the housing 7, the piston at an indicated hydraulic Ventilspielausglek ⁇ device for adjusting the valve clearance with hydraulic fluid acted upon.
  • the Gie 'rt.ffownen 4, 5 of support element 2 and the support portion are formed cylindrical to the transverse axis 3 and extend stand
  • the support portion engages in the pivoting direction on its Gleit.flache 5 to Abstützkopf of the support member 2 at its in the pivoting direction in a range from about 180 v frontal GieitCount Structure 4.
  • the sliding contact surface 5 forms so on the support portion an approximately I80 * -Halbzylinder1 ⁇ alotte and corresponding thereto, the sliding contact surface 4 on the support head of the support member 2 a ca.180 e- cylinder head.
  • 5 corresponding ⁇ l mousseo réelleen are provided.
  • the drag lever 1 is shown cut on the support portion along the transverse axis 3, which also forms the pivot axis of the finger lever 1.
  • the support section and the sliding contact surface 5 are bounded on the drag lever 1 in the transverse axis direction on opposite sides by parallel side wall sections 8, 9.
  • Support section and Seftenwandabitese 8, 9 thus form a U-shaped cross-sectional profile.
  • On the open side of the support member 2 engages with its cylinder head on the GleitCount Structure 4 between the sowandabschnrtten 8.
  • 9 on Auflageab- section of the finger lever 1 on the finger lever 1 is located on the guide element in the transverse axis direction on both sides of its side wall sections 8, 9 on the support element 2. He is between his Sertenwandabitesen 8, 9 at its support portion at the formed by the GieitWallet Structure 5 Halbzy- 8th
  • the side surfaces 10, 11 are cylindrical in this case according to the cylindrical body of the piston, so that the side wall sections 8, 9 rest against the side surfaces 10, 11 in the unia contact.
  • the drag lever 1 is truncated in this manner on both sides in Querachsnchtung on the side surfaces 10, 1 for guidance on the support element 2 and thereby secured during operation during a pivoting movement and during assembly lateral tilting or jumping off the support element 2.
  • the two-sided Abstutzung the Schlepphebeis 1 in the transverse axis direction is in addition to the pivotally supporting the drag lever 1 on the GleitWalletmati 4 «5 its lateral guidance on the support 2 safe.
  • a perspective individual view of the Schlepphebeis 1 according to Figure 3 zekjt at its support end portion in the region of the half cylinder calotte on the support portion, the high parallel side wall portions 8, 9.
  • These are up to the MattergangssbereMSh 12 to Nockenabgriffs Colour, here the cam roller, continued and significantly increase the rigidity of the finger lever
  • the side wall sections 8, 9 at the support-side end region form a part of the parallel side walls formed on the sliding lever 1 continuously up to the valve-side end region.
  • This configuration permits a particularly simple non-cutting manufacture of the finger lever by order - shapes in sheet metal.
  • Due to the awkward stiffness of the high parallel side wall sections 8. 9, the transition region 12 of the support section and the cam roller mount between the side wall sections 8 : ⁇ can be made flush with the support section and a manufacturing technology difficult high bridge between the side wall sections 8, vermieden be avoided in the transition region 12.
  • FIGS. 4 and 5 show the drag lever 1 in a longitudinal section or in a cross section along the transverse axis 3 on the support-side end region on the support section.
  • the Gteitcardflä- 5 formed on the support portion cylindrically to the transverse axis 3 forms the approximately 180 ° -Halbzylinderkalotte ( Figure 4) axially on both sides by the plane-parallel side wall sections 8, 9, the lateral guide cheeks for guiding the drag lever on the support element 2. is limited.
  • the Schtepphebels 1 can be produced in the region of the support section with significantly reduced lever width. Since the drag lever 1 can be guided at its support end on both sides of the support wall on the support side, the valve guide height of the side winds in the area of the valve support 6 can be reduced on the valve side lever end.
  • FIG. 6 shows the support element 2 in a single view.
  • the sliding contact surface 4 which is formed cylindrically with respect to the transverse axis 3, is provided on its cylindrical base body at the end face.
  • the transverse axis 3 at the same time forms the pivot axis of a pivotable on the GleitWalletflache 4 Abstutzbaren rocker arm 1 and extends perpendicular to the piston axis.
  • the glacier contact surface 4 is bounded on both sides on the support element in the transverse axis direction by the selenium surfaces 10, 11 of the cylindrical basic body of the piston running perpendicular to the contact surface 4.
  • FIG. 7 shows at the free end of the supporting element 2 one half of the sliding contact surface cylindrically shaped with respect to the transverse axis 3 with its parallel to the transverse axis 4 and the side surfaces 10, 11 extending in transverse axis direction on opposite sides perpendicular to the sliding contact surface 4
  • FIG. 9 shows a second exemplary embodiment of the invention, in which the lateral surfaces 10, 11 opposite the transverse axis direction are flattened plane-parallel perpendicular to the transverse axis 3 on the support head of the support element 2.
  • the flattened side surfaces 10, 11 and the Gleittrainingflache 4 form on Ab parkingtement 2 a half-cylinder head, which forms a shoulder in the region of the flattened side surfaces 10, 11 on the cylindrical body of the piston on which the outer diameter is retracted.
  • the Schtepphebel 1 is flat against its plane-parallel sowandab- parts 8, 9 on the side surfaces 10, 11 of the half-cylinder head on the support element 2.
  • the diameter-reducing flattening on the side surfaces 10, 11 of the piston of the support element 2 makes it possible to further reduce the width of the finger lever in the area of its support section.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)

Abstract

L'invention concerne un mécanisme de distribution pour un moteur à combustion interne d'un véhicule, pourvu d'un basculeur (1) et d'un élément de support (2). Le basculeur (1), par une de ses zones d'extrémité sur une partie d'appui, est en appui sur l'élément de support (2) de manière à pouvoir pivoter autour d'un axe transversal (3). L'invention est caractérisée en ce que la partie d'appui est délimitée dans la direction de l'axe transversal, sur des faces opposées, par des parties de paroi latérale (8, 9) sur le basculeur (1), le basculeur (1) étant guidé, de part et d'autre, sur ses parties de paroi latérale (8, 9) sur l'élément de support (2) appliqué sur la partie d'appui entre lesdites parois latérales dans la direction de l'axe transversal. L'invention concerne en outre un basculeur et un élément de support pour un mécanisme de distribution d'un moteur à combustion interne d'un véhicule automobile.
PCT/DE2014/200226 2013-08-01 2014-05-21 Mécanisme de distribution pour moteur à combustion interne d'un véhicule, basculeur et élément de support pour mécanisme de distribution d'un moteur à combustion interne d'un véhicule Ceased WO2015014352A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE201310215072 DE102013215072A1 (de) 2013-08-01 2013-08-01 Ventiltrieb für eine Brennkraftmaschine eines Fahrzeugs, Schlepphebel und Abstützelement für einen Ventiltrieb einer Brennkraftmaschine eines Fahrzeugs
DE102013215072.5 2013-08-01

Publications (1)

Publication Number Publication Date
WO2015014352A1 true WO2015014352A1 (fr) 2015-02-05

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PCT/DE2014/200226 Ceased WO2015014352A1 (fr) 2013-08-01 2014-05-21 Mécanisme de distribution pour moteur à combustion interne d'un véhicule, basculeur et élément de support pour mécanisme de distribution d'un moteur à combustion interne d'un véhicule

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DE (1) DE102013215072A1 (fr)
WO (1) WO2015014352A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017129710A1 (de) 2017-12-13 2019-06-13 Schaeffler Technologies AG & Co. KG Ventiltrieb für eine Brennkraftmaschine

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5259346A (en) * 1992-11-05 1993-11-09 Henley Manufacturing Holding Company, Inc. Rocker arm of the cam-follower type for operating two valves
DE19536090A1 (de) * 1995-09-28 1997-04-03 Schaeffler Waelzlager Kg Brennkraftmaschine mit einem Hebeltrieb zur gleichzeitigen Beaufschlagung von zumindest zwei Gaswechselventilen
US20010035144A1 (en) * 2000-04-12 2001-11-01 Burns John J. Load biasing retainer clip and valve actuator subassembly
DE102008008843A1 (de) * 2007-02-16 2008-09-11 GM Global Technology Operations, Inc., Detroit Oben liegende Hochleistungs-Ventiltriebanordnung
DE102007020128A1 (de) * 2007-04-28 2008-10-30 Schaeffler Kg Ventiltrieb mit positionsausgeglichenen Abstützelementen für einen Nockenfolger

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5259346A (en) * 1992-11-05 1993-11-09 Henley Manufacturing Holding Company, Inc. Rocker arm of the cam-follower type for operating two valves
DE19536090A1 (de) * 1995-09-28 1997-04-03 Schaeffler Waelzlager Kg Brennkraftmaschine mit einem Hebeltrieb zur gleichzeitigen Beaufschlagung von zumindest zwei Gaswechselventilen
US20010035144A1 (en) * 2000-04-12 2001-11-01 Burns John J. Load biasing retainer clip and valve actuator subassembly
DE102008008843A1 (de) * 2007-02-16 2008-09-11 GM Global Technology Operations, Inc., Detroit Oben liegende Hochleistungs-Ventiltriebanordnung
DE102007020128A1 (de) * 2007-04-28 2008-10-30 Schaeffler Kg Ventiltrieb mit positionsausgeglichenen Abstützelementen für einen Nockenfolger

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