JP2005214199A - Valve drive device for intake and exhaust valve of internal combustion engine - Google Patents

Valve drive device for intake and exhaust valve of internal combustion engine Download PDF

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JP2005214199A
JP2005214199A JP2005017168A JP2005017168A JP2005214199A JP 2005214199 A JP2005214199 A JP 2005214199A JP 2005017168 A JP2005017168 A JP 2005017168A JP 2005017168 A JP2005017168 A JP 2005017168A JP 2005214199 A JP2005214199 A JP 2005214199A
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rocker arm
valve
hinged
adjustable
eccentric shaft
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Japanese (ja)
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Matthias Soengen
ゼンゲン マチアス
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MAN B&W Diesel GmbH
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MAN B&W Diesel GmbH
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
    • H04H20/53—Arrangements specially adapted for specific applications, e.g. for traffic information or for mobile receivers
    • H04H20/57—Arrangements specially adapted for specific applications, e.g. for traffic information or for mobile receivers for mobile receivers
    • 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
    • F01L1/14—Tappets; Push rods
    • F01L1/146—Push-rods
    • 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
    • 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
    • F01L13/00—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations
    • F01L13/0015—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque
    • F01L13/0021—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque by modification of rocker arm ratio
    • F01L13/0026—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque by modification of rocker arm ratio by means of an eccentric
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
    • H04N5/455—Demodulation-circuits
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
    • H04N5/50—Tuning indicators; Automatic tuning control
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63F—CARD, BOARD, OR ROULETTE GAMES; INDOOR GAMES USING SMALL MOVING PLAYING BODIES; VIDEO GAMES; GAMES NOT OTHERWISE PROVIDED FOR
    • A63F2250/00—Miscellaneous game characteristics
    • A63F2250/64—Miscellaneous game characteristics used for radio or television, e.g. television shows; used in front of an audience
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H2201/00—Aspects of broadcast communication
    • H04H2201/10—Aspects of broadcast communication characterised by the type of broadcast system
    • H04H2201/11—Aspects of broadcast communication characterised by the type of broadcast system digital multimedia broadcasting [DMB]

Abstract

<P>PROBLEM TO BE SOLVED: To enable stepless phase shift of valve control timing irrespective of rotation speed and load without change in valve clearance. <P>SOLUTION: The valve drive device for intake and exhaust valves of an internal combustion engine is provided with at least one rocker arm 12. The arms act on corresponding intake and exhaust valves at one end parts and are hinged on corresponding push rods 13 at second end parts. The push rod is actively connected to an adjustment device for phase shift of each valve control timing. The adjustment device is provided with a adjustable rocker arm 17 for each push rod. One end of the arm acts jointly with an eccentric shaft 16 and another end of the arm acts jointly with a roller 18 sliding on a cam 15 of a camshaft 14. The adjustable rocker arm is hinged on the cam shaft 14 via a spindle bracket 19. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

本発明は、請求項１の前文に記載の、内燃機関の吸排気弁用弁駆動装置に関する。   The present invention relates to a valve drive device for an intake / exhaust valve of an internal combustion engine according to the preamble of claim 1.

請求項１の前文に記載の構成を有する内燃機関の吸排気弁用弁駆動装置は、特許文献１により公知である。特許文献１による弁駆動装置は、基本的にロッカアームを備える。このロッカアームは、一方のレバーアームで弁に作用し、他方のレバーアームで押し棒とヒンジ結合し、押し棒が調整装置に作用的に結合する。特許文献１による調整装置は、弁毎に偏心円板上を揺動するロッカアームを備えている。ロッカアームはカム軸のカム上を滑るローラと偏心軸との間に、偏心軸の回転によってローラの変化する位置がカムの基礎円上で達成可能となるような結合状態を作る。これは制御タイミングを変化させ、その結果吸排気過程の最適化のために、例えばディーゼル機関を種々の負荷状態の下で、有害物質が少なく、燃料消費の少ない運転に適応可能とする。   A valve drive device for an intake / exhaust valve of an internal combustion engine having the structure described in the preamble of claim 1 is known from Japanese Patent Application Laid-Open No. 2003-122867. The valve drive device according to Patent Document 1 basically includes a rocker arm. In this rocker arm, one lever arm acts on the valve, the other lever arm hinges to the push rod, and the push rod is operatively coupled to the adjusting device. The adjusting device according to Patent Document 1 includes a rocker arm that swings on an eccentric disk for each valve. The rocker arm creates a coupling state between the roller sliding on the cam of the cam shaft and the eccentric shaft so that the position at which the roller changes due to the rotation of the eccentric shaft can be achieved on the basic circle of the cam. This changes the control timing, so that, for example, a diesel engine can be adapted for operation with less harmful substances and less fuel consumption under various load conditions in order to optimize the intake and exhaust processes.

特許文献１による弁駆動装置は、弁制御タイミングの変化時に、そこに開示された調整装置により弁隙間変化を十分に補償し得ず、その結果、特許文献１による弁駆動装置は偏心軸の２つの極限調整位置でしか満足に動作しないという欠点を持っている。特許文献１による弁駆動装置では、偏心円板の両極限位置の間で、弁の残留開放又は大きな弁隙間が生じてしまい、その結果、機関サイクルの間、少なくとも一方の終端位置から他方の終端位置への偏心円板の変位をピストンの損傷なしに容易に可能と成し得ない。   The valve driving device according to Patent Document 1 cannot sufficiently compensate for the change in the valve gap by the adjusting device disclosed therein when the valve control timing changes, and as a result, the valve driving device according to Patent Document 1 has 2 eccentric shafts. It has the disadvantage of operating satisfactorily only in one extreme adjustment position. In the valve drive device according to Patent Document 1, a residual opening of the valve or a large valve gap occurs between the extreme positions of the eccentric disc, and as a result, during the engine cycle, at least one end position to the other end position. Displacement of the eccentric disk to position cannot be easily made without damage to the piston.

弁制御タイミングの位相シフトが機関サイクルの間、弁隙間の変化なしに回転数や負荷に無関係に無段階で全変位領域にわたり可能な弁駆動装置を構成すべく、特許文献２は、弁隙間変化の補償のために少なくとも弾性を有する長さ変化補償手段を用いることを提案している。この特許文献２に開示の弁駆動装置は、回転数や負荷に無関係に無段階の位相シフトないし弁制御タイミングの調整が機関サイクルの間可能である。
独国特許出願公開第 ４３３０９１３号明細書 独国特許出願公開第１００４１４６６号明細書 In order to construct a valve drive device in which the phase shift of the valve control timing is possible steplessly over the entire displacement region regardless of the rotational speed and load without changing the valve gap during the engine cycle, Patent Document 2 discloses a change in the valve gap. It is proposed to use a length change compensating means having at least elasticity for compensating for the above. The valve driving device disclosed in Patent Document 2 can adjust a stepless phase shift or valve control timing during the engine cycle regardless of the rotational speed or the load.
German Patent Application No. 4330913 German Patent Application No. 10041466

従って本発明の課題は、上記問題点を解決する、内燃機関の吸排気弁用の新規な弁駆動装置を提供することである。   Accordingly, an object of the present invention is to provide a novel valve driving device for an intake / exhaust valve of an internal combustion engine that solves the above-mentioned problems.

この課題は、冒頭に述べた内燃機関の吸排気弁用の弁駆動装置を請求項１の特徴部に記載の構成とすることで解決できる。本発明によれば、調整可能なロッカアームがスピンドルブラケットを経てカム軸にヒンジ結合され、他方調整不能なロッカアームはカム軸の軸心に対し同軸的に位置し、シリンダセグメント面の形の滑り面を備え、押し棒に係合する調整不能なロッカアームの端部が滑り面上を位相シフトの間カム軸に関し一定の半径Ｒを維持しつつカムの基礎円の方向に変位し得るよう、スピンドルブラケットに作用する。   This problem can be solved by adopting the valve drive device for an intake / exhaust valve of an internal combustion engine described at the beginning as described in the characterizing portion of claim 1. According to the invention, the adjustable rocker arm is hinged to the camshaft via the spindle bracket, while the non-adjustable rocker arm is located coaxially with the camshaft axis and provides a sliding surface in the form of a cylinder segment surface. The end of the non-adjustable rocker arm that engages the push rod can be displaced in the direction of the cam base circle while maintaining a constant radius R with respect to the cam shaft during phase shifting on the sliding surface. Works.

本発明の考えに従って提案する弁駆動装置は、機関の運転中、回転数および負荷に無関係の、無段階の変位ないし弁制御タイミング制御並びにの位相シフトと、弁行程の制御を弁隙間変動なしに可能とする。しかも、この弁駆動装置は弾性的な長さ変化補償段なしに実現する。従って本発明の弁駆動装置は構造的に単純で、それ故に安価である。   The valve drive device proposed in accordance with the idea of the present invention provides stepless displacement or valve control timing control and phase shift of the valve stroke control without valve gap fluctuation, irrespective of the rotational speed and load during engine operation. Make it possible. Moreover, this valve drive device is realized without an elastic length change compensation stage. Thus, the valve drive of the present invention is structurally simple and therefore inexpensive.

本発明の更なる構成については、従属請求項および以下に述べる実施例についての説明で明らかにする。   Further configurations of the invention will become apparent from the dependent claims and the description of the embodiments described below.

次に図面を参照して本発明の実施例を詳細に説明する。なお、図面に示す実施例は本発明を限定するものではないことに留意すべきである。   Next, embodiments of the present invention will be described in detail with reference to the drawings. It should be noted that the embodiments shown in the drawings do not limit the present invention.

図１は内燃機関、特にディーゼル機関の本発明による弁駆動装置１０をシリンダヘッド１１と共に示す図である。   FIG. 1 shows a valve drive device 10 according to the invention of an internal combustion engine, in particular a diesel engine, together with a cylinder head 11.

図１の弁駆動装置１０はロッカアーム１２を備える。該アーム１２は第１端部で吸排気弁に作用し、第２端部で押し棒１３にヒンジ結合している。押し棒１３は弁制御タイミングの位相シフトのため調整装置に作用的に結合する。弁制御タイミングの位相シフトのための調整装置は、カム軸１４と、その上に配置されたカム１５と、偏心軸１６と、調整可能なロッカアーム１７とを備える。調整可能なロッカアーム１７は、カム１５上を滑るローラ１８と偏心軸１６との間の接続を作る。そのため、偏心軸１６の回動によりローラ１８がカム１５の基礎円上で位置を変え、その結果変化する制御タイミングが得られる。   The valve drive device 10 of FIG. The arm 12 acts on the intake / exhaust valve at the first end, and is hinged to the push rod 13 at the second end. The push rod 13 is operatively coupled to the adjusting device for a phase shift of the valve control timing. The adjusting device for the phase shift of the valve control timing includes a cam shaft 14, a cam 15 disposed thereon, an eccentric shaft 16, and an adjustable rocker arm 17. The adjustable rocker arm 17 makes a connection between the roller 18 sliding on the cam 15 and the eccentric shaft 16. Therefore, the rotation of the eccentric shaft 16 changes the position of the roller 18 on the basic circle of the cam 15, and as a result, a control timing that changes is obtained.

本発明においては、調整可能なロッカアーム１７を、スピンドルブラケット１９を介してカム軸１４にヒンジ結合し、又はカム軸１４上に支持する。スピンドルブラケット１９の第１端部２０はカム軸１４にヒンジ結合し、第２端部２１は調整可能なロッカアーム１７にヒンジ結合している。図２、３に示すように調整可能なロッカアーム１７の第１端部２２はカム軸１４のカム１５上を滑るローラ１８に係合し、第２端部２３はスピンドルブラケット１９、即ちスピンドルブラケット１９の第２端部２１に結合している。   In the present invention, the adjustable rocker arm 17 is hinged to the camshaft 14 via the spindle bracket 19 or supported on the camshaft 14. The first end 20 of the spindle bracket 19 is hinged to the camshaft 14 and the second end 21 is hinged to the adjustable rocker arm 17. As shown in FIGS. 2 and 3, the first end 22 of the adjustable rocker arm 17 engages a roller 18 that slides on the cam 15 of the camshaft 14, and the second end 23 is a spindle bracket 19, that is, the spindle bracket 19. The second end portion 21 is coupled.

更に図１〜３から推察できるように、調整可能なロッカアーム１７の第２端部にはスピンドルブラケット１９だけではなく、関節レバー２４もヒンジ結合している。   Further, as can be inferred from FIGS. 1 to 3, not only the spindle bracket 19 but also the joint lever 24 is hinged to the second end of the adjustable rocker arm 17.

ヒンジ結合された関節レバー２４は、第１端部２５で調整可能なロッカアーム１７の第２端部２３とヒンジ結合している。関節レバー２４の第２端部２６は、偏心軸１６に作用的に結合する。その結果、従来技術とは異なり、本発明による弁駆動装置１０では、調整可能なロッカアーム１７が偏心軸１６に直接に係合するのではなく、関節レバー２４を介して係合する。本発明による弁駆動装置１０では、カム軸１４のカム１５上を滑るローラ１８と偏心軸１６との間の結合は調整可能なロッカアーム１７と関節レバー２４との組合せにより作られ、調整可能なロッカアーム１７は第１端部２２でローラ１８に係合し、しかもその場合、関節レバー２４は第２端部２６で偏心軸１６と作用的に結合する。各々の他端２３ないし２５には、調整可能なロッカアーム１７および関節レバー２４が互いにヒンジ結合する。これは好ましい実施例であり、自明のごとく、関節レバー２４の端部２５は必ずしも調整可能なロッカアーム１７の端部２３にヒンジ結合する必要はなく、スピンドルブラケット１９の他の位置にヒンジ結合してもよい。   The hinged joint lever 24 is hinged to the second end 23 of the rocker arm 17 adjustable at the first end 25. The second end 26 of the joint lever 24 is operatively coupled to the eccentric shaft 16. As a result, unlike the prior art, in the valve drive 10 according to the invention, the adjustable rocker arm 17 engages via the articulation lever 24 rather than directly engaging the eccentric shaft 16. In the valve drive device 10 according to the present invention, the coupling between the roller 18 sliding on the cam 15 of the cam shaft 14 and the eccentric shaft 16 is made by a combination of an adjustable rocker arm 17 and a joint lever 24, and the adjustable rocker arm. 17 engages the roller 18 at the first end 22, in which case the articulation lever 24 is operatively coupled to the eccentric shaft 16 at the second end 26. An adjustable rocker arm 17 and a joint lever 24 are hinged to each other at each other end 23-25. This is a preferred embodiment and, as is obvious, the end 25 of the articulation lever 24 does not necessarily have to be hinged to the end 23 of the adjustable rocker arm 17 and is hinged to other positions on the spindle bracket 19. Also good.

弁制御タイミングの位相シフトのための調整装置はカム軸１４、偏心軸１６、調整可能なロッカアーム１７、スピンドルブラケット１９および関節レバー２４の他に、調整不能なロッカアーム２７を付加的に備えている。調整不能なロッカアーム２７は、一方の端部２８で調整可能なロッカアーム１７の第１端部２２に作用的に結合し、他方の端部２９で偏心軸１６に固定されている。その場合、調整不能なロッカアーム２７の、調整可能なロッカアーム１７への結合は、図２と３の比較から推察し得るように、調整可能なロッカアーム１７がカム軸１４に対し同軸的に位置する滑り面３０を備えることで、相対的に互いに変位可能となる。滑り面３０はシリンダセグメント面の形で形成され、図２と３は、より分かり易くすべく、カム軸の軸心を中心として円の半径を描く矢印Ｒで示している。滑り面３０上で、カム軸１４の基礎円の中心と押し棒１３の支点３１の中心との間の距離ｈが位相シフトのために調整装置の調整範囲にわたり所定の弁リフトに関しロッカアーム２７の端部２８に常に一定に維持するよう、ロッカアーム２７の端部２８がカム１５の基礎円の方向に変位する。図２と３は、例として弁が閉じた状態の弁駆動装置１０を示し、描いた条件は当然のことながら最大の弁リフトの位置に対しても当てはまり、その場合、位相シフト時に一定に保たれる距離ｈは勿論弁が閉じている場合より大きい。   In addition to the camshaft 14, the eccentric shaft 16, the adjustable rocker arm 17, the spindle bracket 19 and the joint lever 24, the adjusting device for the phase shift of the valve control timing additionally includes a non-adjustable rocker arm 27. The non-adjustable rocker arm 27 is operatively coupled to the first end 22 of the adjustable rocker arm 17 at one end 28 and fixed to the eccentric shaft 16 at the other end 29. In that case, the coupling of the non-adjustable rocker arm 27 to the adjustable rocker arm 17 is a slip where the adjustable rocker arm 17 is coaxial with respect to the camshaft 14 as can be inferred from a comparison of FIGS. By providing the surface 30, they can be displaced relative to each other. The sliding surface 30 is formed in the form of a cylinder segment surface, and FIGS. 2 and 3 are shown by an arrow R which draws the radius of a circle around the axis of the camshaft for easier understanding. On the sliding surface 30, the distance h between the center of the base circle of the camshaft 14 and the center of the fulcrum 31 of the push rod 13 is the end of the rocker arm 27 for a given valve lift over the adjustment range of the adjusting device for phase shifting. The end portion 28 of the rocker arm 27 is displaced in the direction of the base circle of the cam 15 so as to always keep the portion 28 constant. FIGS. 2 and 3 show the valve drive 10 with the valve closed as an example, the conditions drawn are of course also true for the maximum valve lift position, in which case it remains constant during the phase shift. The sagging distance h is of course greater than when the valve is closed.

図１〜３から分かるように、関節レバー２４の第２端部２６はリング状横断面形状体とされ、それを経て偏心軸１６が延びている。ここでリング状横断面形状体の内径は固定配置の偏心軸１６の外径より大きく、従って調整可能なロッカアーム１７、関節レバー２４およびスピンドルブラケット１９の対応する調整に伴い、リング状横断面形状体と偏心軸１６の間で相対位置の変化が可能である。このことも図２と３の比較から推定できる。   As can be seen from FIGS. 1 to 3, the second end portion 26 of the joint lever 24 has a ring-shaped cross-sectional shape, through which the eccentric shaft 16 extends. Here, the inner diameter of the ring-shaped cross-section is larger than the outer diameter of the fixedly arranged eccentric shaft 16, and accordingly, with the corresponding adjustment of the adjustable rocker arm 17, joint lever 24 and spindle bracket 19, the ring-shaped cross-section And the relative position between the eccentric shaft 16 can be changed. This can also be estimated from a comparison of FIGS.

図２と３は、本発明による弁駆動装置１０、特に弁駆動装置の弁制御タイミングの位相シフトのための調整装置を２つの異なる位置で示す。両図において角度α1とα2は各々偏心軸１６の所謂位相角に対応し、角度β1とβ2は各々所謂偏心角に対応する。異なる位相角α1とα2に対応して、ローラ１８の位置が基準線３２に対し相対的に変化する。その際に通常出現する弁隙間の変化が、本発明による構造によりローラ１８がカム基礎円上を滑るとき、カム１５の基礎円に対して同軸的に位置する調整可能なロッカアーム１７の滑り面３０によって完全に補償され、ここに無段階で回転数と負荷に無関係の、弁制御タイミングの調整又は位相シフトが機関運転中、全調整範囲および弁リフト調整範囲にわたり弁隙間変動なしに可能になる。これは、スピンドルブラケット１９を経たカム軸１４への調整可能なロッカアーム１７の支持により達成される。偏心軸１６への調整可能なロッカアーム１７の結合は、一端で調整可能なロッカアーム１７にヒンジ結合され、他端で偏心軸１６に対する相対位置の変化が可能な関節レバー２４により行われる。調整不能なロッカアーム２７は固定のために役立ち、偏心軸１６を押し棒１３に結合する。 2 and 3 show a valve drive device 10 according to the invention, in particular an adjustment device for phase shift of the valve control timing of the valve drive device, in two different positions. In both figures, the angles α 1 and α 2 correspond to the so-called phase angle of the eccentric shaft 16, and the angles β 1 and β 2 correspond to the so-called eccentric angle, respectively. The position of the roller 18 changes relative to the reference line 32 corresponding to the different phase angles α 1 and α 2 . A change in the valve clearance that normally appears in this case is the sliding surface 30 of the adjustable rocker arm 17 that is positioned coaxially with the base circle of the cam 15 when the roller 18 slides on the cam base circle with the structure according to the invention. In this way, adjustment or phase shift of the valve control timing, which is stepless and independent of the speed and load, is possible without any fluctuations in the valve clearance over the entire adjustment range and valve lift adjustment range during engine operation. This is achieved by supporting the adjustable rocker arm 17 on the camshaft 14 via the spindle bracket 19. The adjustable rocker arm 17 is coupled to the eccentric shaft 16 by an articulated lever 24 that is hinged to the adjustable rocker arm 17 at one end and capable of changing the relative position with respect to the eccentric shaft 16 at the other end. A non-adjustable rocker arm 27 serves for fixing and couples the eccentric shaft 16 to the push bar 13.

内燃機関の吸排気弁用の本発明による弁駆動装置の斜視図（実施例１）。FIG. 1 is a perspective view of a valve driving device according to the present invention for an intake / exhaust valve of an internal combustion engine (Example 1). 本発明による弁駆動装置の第１位置における図１の装置の要部側面図。FIG. 2 is a side view of a main part of the device of FIG. 1 in a first position of a valve drive device according to the present invention. 本発明による弁駆動装置の第２位置における図１の装置の要部側面図。FIG. 3 is a side view of a main part of the device of FIG. 1 in a second position of the valve drive device according to the present invention.

符号の説明Explanation of symbols

１０ 弁駆動装置、１１ シリンダヘッド、１２、１７、２７ ロッカアーム、１３ 押し棒、１４ カム軸、１５ カム、１６ 偏心軸、１８ ローラ、１９ スピンドルブラケット、２０、２２、２５ 第１端部、２１、２３、２６ 第２端部、２４ 関節レバー、２８、２９ 端部、３０ 滑り面、３１ 支点、３２ 基準線

DESCRIPTION OF SYMBOLS 10 Valve drive device, 11 Cylinder head, 12, 17, 27 Rocker arm, 13 Push rod, 14 Cam shaft, 15 Cam, 16 Eccentric shaft, 18 Roller, 19 Spindle bracket, 20, 22, 25 First end, 21, 23, 26 Second end, 24 Joint lever, 28, 29 End, 30 Sliding surface, 31 Support point, 32 Reference line

Claims (7)

少なくとも１つのロッカアーム（１２）を備え、該ロッカアーム（１２）は第１端部で各々対応する吸排気弁に作用し、第２端部で対応する押し棒（１３）にヒンジ結合され、前記押し棒（１３）は各々弁制御タイミングの位相シフトのために調整装置に作用的に結合され、前記調整装置は押し棒（１３）毎に調整可能なロッカアーム（１７）を備え、このロッカアーム（１７）は一端で偏心軸（１６）と共同作用し、他端でカム軸（１４）のカム（１５）上を滑るローラ（１８）と共同作用する、内燃機関の少なくとも１つの吸排気弁のための弁駆動装置において、
前記調整可能なロッカアーム（１７）がスピンドルブラケット（１９）を介して前記カム軸（１４）にヒンジ結合され、しかも前記調整可能なロッカアーム（１７）が、基礎円に対して前記カム軸（１４）の軸心の周りに同軸的に位置する、シリンダセグメント面の形をした滑り面（３０）を備え、前記押し棒（１３）に係合する調整不能なロッカアーム（２７）の端部（２８）が前記滑り面（３０）を前記基礎円の方向に変位させるべく、前記調整不能なロッカアーム（２７）経て前記押し棒（１９）に作用することを特徴とする弁駆動装置。 Comprising at least one rocker arm (12), each rocker arm (12) acting on a corresponding intake and exhaust valve at a first end and hinged to a corresponding push rod (13) at a second end, said pusher Each rod (13) is operatively coupled to an adjusting device for phase shifting of the valve control timing, said adjusting device comprising a rocker arm (17) adjustable for each push rod (13), this rocker arm (17) For at least one intake and exhaust valve of an internal combustion engine, which cooperates with an eccentric shaft (16) at one end and a roller (18) sliding on the cam (15) of the camshaft (14) at the other end. In the valve drive device,
The adjustable rocker arm (17) is hinged to the camshaft (14) via a spindle bracket (19), and the adjustable rocker arm (17) is connected to the camshaft (14) with respect to a base circle. The end (28) of the non-adjustable rocker arm (27) with a sliding surface (30) in the form of a cylinder segment surface, coaxially located about the axis of the shaft and engaging the push bar (13) Acting on the push rod (19) via the non-adjustable rocker arm (27) to displace the sliding surface (30) in the direction of the base circle. 前記スピンドルブラケット（１９）の第１端部（２０）が、前記カム軸（１４）にヒンジ結合されたことを特徴とする請求項１記載の装置。   2. A device according to claim 1, characterized in that the first end (20) of the spindle bracket (19) is hinged to the camshaft (14). 前記スピンドルブラケット（１９）の第２端部（２１）が、前記調整可能なロッカアーム（１７）にヒンジ結合されたことを特徴とする請求項１又は２記載の装置。   3. The device according to claim 1, wherein the second end (21) of the spindle bracket (19) is hinged to the adjustable rocker arm (17). 前記調整可能なロッカアーム（１７）の第１端部（２２）がカム軸（１４）のカム（１５）上を滑るローラ（１８）に係合し、第２端部（２３）が前記スピンドルブラケット（１９）にヒンジ結合されたことを特徴とする請求項１から３の１つに記載の装置。   A first end (22) of the adjustable rocker arm (17) engages a roller (18) sliding on a cam (15) of a camshaft (14), and a second end (23) is the spindle bracket. Device according to one of claims 1 to 3, characterized in that it is hinged to (19). 前記調整可能なロッカアーム（１７）の第２端部（２３）が更に関節レバー（２４）の第１端部（２５）にヒンジ結合され、該関節レバー（２４）の第２端部（２６）が偏心軸（１６）にヒンジ結合されたことを特徴とする請求項１から４の１つに記載の装置。   The second end (23) of the adjustable rocker arm (17) is further hinged to the first end (25) of the articulation lever (24), and the second end (26) of the articulation lever (24). 5. Device according to claim 1, characterized in that is hinged to the eccentric shaft (16). 前記関節レバー（２４）の第２端部（２６）が前記偏心軸（１６）が貫通するリング状横断面形状体として形成され、前記リング状横断面形状体の内径が前記偏心軸（１６）の外径より大きいことを特徴とする請求項５記載の装置。   The second end (26) of the joint lever (24) is formed as a ring-shaped cross-sectional shape body through which the eccentric shaft (16) passes, and the inner diameter of the ring-shaped cross-sectional shape body is the eccentric shaft (16). 6. The device of claim 5, wherein the device has an outer diameter greater than the outer diameter. 前記調整不能なロッカアーム（２７）の他端（２９）が、前記偏心軸（１６）に係合されたことを特徴とする請求項１から５の１つに記載の装置。

Device according to one of the preceding claims, characterized in that the other end (29) of the non-adjustable rocker arm (27) is engaged with the eccentric shaft (16).

JP2005017168A 2004-01-28 2005-01-25 Valve drive device for intake and exhaust valve of internal combustion engine Pending JP2005214199A (en)

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DE102004004179A DE102004004179A1 (en) 2004-01-28 2004-01-28 Drive assembly for intake/ exhaust valves of internal combustion engine, has adjustable rocker arm of phase shift adjusting device for valve timing control, having slip plane to displace adjusting device

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