[go: up one dir, main page]

JP2006153008A - Valve drive device for intake and exhaust valves of internal combustion engine - Google Patents

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

Info

Publication number
JP2006153008A
JP2006153008A JP2005330562A JP2005330562A JP2006153008A JP 2006153008 A JP2006153008 A JP 2006153008A JP 2005330562 A JP2005330562 A JP 2005330562A JP 2005330562 A JP2005330562 A JP 2005330562A JP 2006153008 A JP2006153008 A JP 2006153008A
Authority
JP
Japan
Prior art keywords
swing lever
valve
adjustable
lever
cam
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.)
Pending
Application number
JP2005330562A
Other languages
Japanese (ja)
Inventor
Armin Grabmaier
グラープマイヤー アルミン
Matthias Soengen
ゼンゲン マチアス
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.)
MAN B&W Diesel GmbH
Original Assignee
MAN B&W Diesel GmbH
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 MAN B&W Diesel GmbH filed Critical MAN B&W Diesel GmbH
Publication of JP2006153008A publication Critical patent/JP2006153008A/en
Pending legal-status Critical Current

Links

Images

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
    • 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
    • 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
    • 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
    • F01L13/0063—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 cam contact point by displacing an intermediate lever or wedge-shaped intermediate element, e.g. Tourtelot
    • 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
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Valve Device For Special Equipments (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)

Abstract

【課題】内燃機関の吸排気弁の弁駆動装置において、弁開閉時間の相変位を、弁遊びの変化なしに、かつ弾性的又は液圧式の弁遊び補償を必要とせずに、無段階で回転数および負荷に無関係にできるようにする。
【解決手段】可調整揺動レバ（１７）を非調整揺動レバ（２７）を介してプッシュロッド（１３）に、その非調整揺動レバ（２７）をカムの基礎円（１９）の方向に可調整揺動レバのローラ（３４）の円弧状表面（１８）を介して移動できるように各々結合し、非調整揺動レバの片側端（２８）に設けた可調整揺動レバの側の面に、円弧状滑り軌道（２０）を少なくとも部分的にカムの基礎円に対して同心的ないし同軸的に形成する。
【選択図】図３
In a valve drive device for an intake / exhaust valve of an internal combustion engine, the phase displacement of the valve opening / closing time is rotated steplessly without change in valve play and without requiring elastic or hydraulic valve play compensation. Be able to do so regardless of number and load.
The adjustable swing lever (17) is moved to the push rod (13) via the non-adjustable swing lever (27), and the non-adjustable swing lever (27) is directed to the basic circle (19) of the cam. Are connected to each other through the arcuate surface (18) of the roller (34) of the adjustable swing lever, and are provided on one side end (28) of the non-adjustable swing lever. The arcuate sliding track (20) is formed at least partially concentrically or coaxially with the base circle of the cam.
[Selection] Figure 3

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の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.

特許文献１に、請求項１の前文に記載の特徴を有する内燃機関の吸排気弁の弁駆動装置が開示されている。即ちこの弁駆動装置はロッカアームを有し、該アームはその片側端で弁に作用し、反対側端でプッシュロッドにヒンジ結合している。プッシュロッドは調整装置に連動接続されている。特許文献１の調整装置は、各弁の偏心輪上で揺動する揺動レバを有し、該レバは、カム軸のカム上を回転するローラと偏心輪軸とを、偏心輪軸の回転によりカム基礎円上でのローラの位置が変化するように結合している。ローラの位置変化は弁開閉時間を変え、もって、例えばディーゼルエンジンの種々の負荷状態において、有害物質発生量を少なくしかつ燃費を改善すべく、吸排気過程を最適化する。   Patent Document 1 discloses a valve drive device for an intake / exhaust valve of an internal combustion engine having the characteristics described in the preamble of claim 1. That is, the valve drive device has a rocker arm, which acts on the valve at one end and is hinged to the push rod at the opposite end. The push rod is interlocked with the adjusting device. The adjusting device of Patent Document 1 has a swing lever that swings on the eccentric wheel of each valve, and the lever cams a roller that rotates on the cam of the cam shaft and the eccentric wheel shaft by rotating the eccentric wheel shaft. It is connected so that the position of the roller on the base circle changes. Changing the position of the roller changes the valve opening and closing time, so that, for example, in various load conditions of a diesel engine, the intake / exhaust process is optimized to reduce the amount of harmful substances generated and improve fuel efficiency.

しかし、特許文献１の弁駆動装置は、そこに開示された調整装置による弁開閉時間の変化時に、弁の遊びの変化を十分に補償できないという欠点がある。そのため、特許文献１の弁駆動装置は、偏心輪軸の回転両端位置でしか作動しない。特許文献１の弁駆動装置の場合、その偏心輪の両端位置間では、弁の残留開口或いは拡大した弁遊びが生ずる。このため、エンジンの運転中、ピストンを損傷する恐れなしに、偏心輪をその少なくとも回転片側端位置から回転反対側端位置に変位調整することは簡単にできない。   However, the valve drive device of Patent Document 1 has a drawback that it cannot sufficiently compensate for the change in the play of the valve when the valve opening / closing time is changed by the adjusting device disclosed therein. For this reason, the valve drive device of Patent Document 1 operates only at the rotational end positions of the eccentric wheel shaft. In the case of the valve driving device of Patent Document 1, a residual opening of the valve or an enlarged valve play occurs between both end positions of the eccentric ring. For this reason, during the operation of the engine, it is not possible to easily adjust the displacement of the eccentric wheel from its at least one rotation end position to the rotation opposite end position without fear of damaging the piston.

エンジン運転中に全調整範囲にわたり弁遊びの変化なしに、弁開閉時間の相変位が無段階で回転数および負荷に無関係に可能な弁駆動装置を用意すべく、既に特許文献２で、弁遊びを最小に補償するため弾性的ないし液圧式の長さ補償要素を利用することが提案されている。特許文献２に開示の弁駆動装置により、エンジン運転中の、弁開閉時間の無段階で回転数および負荷に無関係な相変位ない調整が可能とされている。
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 prepare a valve driving device in which the phase displacement of the valve opening and closing time is stepless and can be made independent of the rotational speed and load without changing the valve play over the entire adjustment range during engine operation, It has been proposed to use elastic or hydraulic length compensation elements to compensate for the minimum. With the valve driving device disclosed in Patent Document 2, it is possible to perform adjustment without phase displacement regardless of the rotational speed and load without stepping the valve opening / closing time during engine operation.
German Patent Application No. 4330913 German Patent Application No. 10041466

本発明の課題は、弾性的ないし液圧式の弁遊びの補償を必要とせず、弁遊びの変化なしに、弁開閉時間の相変位が無段階で回転数および負荷に無関係に可能な内燃機関の吸排気弁の新たな弁駆動装置を提供することにある。   It is an object of the present invention to provide an internal combustion engine that does not require compensation for elastic or hydraulic valve play, and can change the valve opening / closing time in a stepless manner regardless of the rotational speed and load without changing the valve play. The object is to provide a new valve drive device for intake and exhaust valves.

この課題は、冒頭に述べた形式の内燃機関の吸排気弁の弁駆動装置を、請求項１に記載の特徴に従い改善することによって解決される。   This problem is solved by improving a valve drive device for an intake and exhaust valve of an internal combustion engine of the type mentioned at the outset according to the features of claim 1.

本発明に従い、可調整揺動レバがその片側端にカムの基礎円上を転がるローラを備え、非調整揺動レバを介してプッシュロッドに、非調整揺動レバがそこに存在する円弧状滑り面でカムの基礎円の方向に可調整揺動レバの円弧状表面を介して変位するように作用し、前記非調整揺動レバがその片側端に可調整揺動レバの側の面に前記円弧状滑り面を有し、該滑り面が少なくとも部分的にカムの基礎円に対し同心的ないし同軸的に円筒セグメント面の形に形成される。   According to the present invention, the adjustable swing lever is provided with a roller that rolls on the basic circle of the cam at one end, and the non-adjustable swing lever is located on the push rod via the non-adjustable swing lever. The non-adjustable swing lever acts on the surface on the adjustable swing lever side at one end of the adjustable swing lever. It has an arcuate sliding surface, which sliding surface is at least partly formed concentrically or coaxially with the cam base circle in the form of a cylindrical segment surface.

即ち本発明は、エンジン運転中の弁開閉時間の無段で回転数と負荷に無関係な調整ないし相変位および弁行程調整を、弁遊びの変化なしに可能とし、しかも、弾性的ないし液圧式の長さ補償要素なしで済ませ得る弁駆動装置を提案する。これに伴い、本発明の弁駆動装置は、構造的に単純であり、この結果安価に製造できる。   That is, the present invention makes it possible to adjust the valve opening / closing time continuously during the operation of the engine, irrespective of the rotational speed and load, or to adjust the phase displacement and the valve stroke without changing the valve play. A valve drive is proposed which can be dispensed with without a length compensation element. Accordingly, the valve driving device of the present invention is structurally simple and can be manufactured at low cost as a result.

本発明の有利な実施態様を、従属請求項および以下の説明から明らかにする。   Advantageous embodiments of the invention emerge from the dependent claims and the following description.

即ち、弁の閉鎖時、可調整揺動レバの円弧状表面と非調整揺動レバの円弧状滑り面との接触面を、所望通りに変化する弁行程に関係して、偏心輪軸上における偏心輪の調整範囲にわたって配置し、その際弁行程を可調整揺動レバと非調整揺動レバとの相互作用によって変化させる。この関係で、関連する部品の総遊びも、万一の摩耗が最小になるように最適にする。特に上述した接触面の配置の選択により、調整装置による相変位のプッシュロッドの行程運動への影響を調整する。   That is, when the valve is closed, the contact surface between the arcuate surface of the adjustable swing lever and the arcuate sliding surface of the non-adjustable swing lever is eccentric on the eccentric wheel shaft in relation to the valve stroke changing as desired. It is arranged over the adjustment range of the wheel, and the valve stroke is changed by the interaction between the adjustable swing lever and the non-adjustable swing lever. In this connection, the total play of the relevant parts is also optimized so that any possible wear is minimized. In particular, the influence of the phase displacement by the adjusting device on the stroke movement of the push rod is adjusted by the selection of the arrangement of the contact surface described above.

また特に有利な実施態様では、円弧状滑り軌道が配置されている非調整揺動レバの片側端を爪状延長部とし、梃の延長部が可調整揺動レバにおけるローラの円弧状表面を部分的に同心的に包囲するように形成し、もって円弧状表面と円弧状滑り面の接触面を、弁の閉鎖時、カムの基礎円の円周にわたり比較的広く非調整揺動レバにおけるプッシュロッドの支持点から離し、非調整揺動レバの他端を偏心輪軸に直接ヒンジ結合する。この結果、各梃比が、爪状延長部を介しておよびプッシュロッドの支持点からの接触面の押し離しによって、調整装置の相変位がプッシュロッドの行程運動に全く又はほんの僅かしか影響を与えないように調整できるので、偏心輪軸上の偏心輪の調整範囲にわたり弁行程変化は全く変化しないか、或いは最悪の場合でも最小の変化しか生じないようにできる。   Further, in a particularly advantageous embodiment, one end of the non-adjustable swinging lever on which the arcuate sliding track is arranged is a claw-like extension, and the extension of the collar is a part of the arcuate surface of the roller in the adjustable swinging lever. Push rod in the non-adjustable swing lever that is formed so as to surround concentrically and the contact surface between the arcuate surface and the arcuate sliding surface is relatively wide over the circumference of the cam base circle when the valve is closed The other end of the non-adjusting swing lever is hinged directly to the eccentric wheel shaft. As a result, the phase shift of the adjusting device has no or very little effect on the stroke movement of the push rod, with each ratio being pushed through the claw-like extension and by pushing away the contact surface from the support point of the push rod. Therefore, the valve stroke change does not change at all over the adjustment range of the eccentric ring on the eccentric ring shaft, or the minimum change can be caused even in the worst case.

以下図示の実施例を参照し本発明を詳細に説明するが、本発明はこれに限定されない。   Hereinafter, the present invention will be described in detail with reference to the illustrated embodiments, but the present invention is not limited thereto.

図１は、内燃機関、特にディーゼルエンジンのシリンダヘッド１１と共に本発明に基づく弁駆動装置１０を示している。   FIG. 1 shows a valve drive 10 according to the invention together with a cylinder head 11 of an internal combustion engine, in particular a diesel engine.

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は片側端で吸排気弁に作用し、反対側端でプッシュロッド１３にヒンジ結合している。該ロッド１３は、弁開閉時間の相変位調整装置に接続している。弁開閉時間の相変位調整装置は、カム軸と、該軸上に置かれたカム１４と、偏心輪軸１６と、可調整揺動レバ１７とを備える。可調整揺動レバ１７は、カム１４上を回転する可調整揺動レバ１７のローラ３４と偏心輪軸１６とを、偏心輪軸１６の回転によってカム１４の基礎円１９上におけるローラ３４の円弧状表面１８の位置が変化し、かくして、変化した開閉時間を得るように結合している。   The valve drive device 10 of FIG. The arm 12 acts on the intake / exhaust valve at one end and is hinged to the push rod 13 at the opposite end. The rod 13 is connected to a phase displacement adjusting device for valve opening / closing time. The valve opening / closing time phase displacement adjusting device includes a cam shaft, a cam 14 placed on the shaft, an eccentric wheel shaft 16 and an adjustable swing lever 17. The adjustable swinging lever 17 is configured so that the roller 34 and the eccentric wheel shaft 16 of the adjustable swinging lever 17 rotating on the cam 14 are rotated, and the arcuate surface of the roller 34 on the basic circle 19 of the cam 14 by the rotation of the eccentric wheel shaft 16. The positions of 18 change and are thus coupled to obtain a changed opening and closing time.

本発明に従い、可調整揺動レバ１７はその片側端２２にカム１４の基礎円１９上を転がるローラ３４を備え、非調整揺動レバ２７を経てプッシュロッド１３に作用する。該レバ２７は可調整揺動レバ１７の側の面に円弧状滑り面２０を有し、この面２０は少なくとも部分的に、カム１４の基礎円１９に対し同心又は同軸的に円筒セグメント面の形に形成されている。可調整揺動レバ１７はプッシュロッド１３に、非調整揺動レバ２７がその滑り面２０を経てカム１４の基礎円１９の方向に、可調整揺動レバ１７の円弧状表面１８を介して変位するよう作用している。また、図１〜３から解るように、可調整揺動レバ１７の反対側端２３は偏心輪軸１６の偏心輪にヒンジ結合している。   According to the present invention, the adjustable swing lever 17 is provided with a roller 34 that rolls on the base circle 19 of the cam 14 at one end 22, and acts on the push rod 13 via the non-adjustable swing lever 27. The lever 27 has an arcuate sliding surface 20 on the surface of the adjustable swinging lever 17, which surface 20 is at least partly concentric or coaxial with the base circle 19 of the cam 14 on the cylindrical segment surface. It is formed into a shape. The adjustable swing lever 17 is displaced by the push rod 13, and the non-adjustable swing lever 27 is displaced through the sliding surface 20 toward the basic circle 19 of the cam 14 via the arcuate surface 18 of the adjustable swing lever 17. It works to do. 1 to 3, the opposite end 23 of the adjustable swing lever 17 is hinged to the eccentric wheel of the eccentric wheel shaft 16.

従って、本発明による弁駆動装置１０の場合、カム軸のカム１４上を回転するローラ３４と偏心輪軸１６との結合は可調整揺動レバ１７だけで行われている。これは有利な実施例であるが、ローラ３４の円弧状表面１８と非調整揺動レバ２７の円弧状滑り面２０との接触面３３は、必ずしも非調整揺動レバ２７の先端２８に形成する必要はなく、上述のように、非調整揺動レバ２７の別の個所で接しても勿論かまわない。   Therefore, in the case of the valve driving device 10 according to the present invention, the roller 34 rotating on the cam 14 of the cam shaft and the eccentric wheel shaft 16 are connected only by the adjustable swing lever 17. Although this is an advantageous embodiment, the contact surface 33 between the arc-shaped surface 18 of the roller 34 and the arc-shaped sliding surface 20 of the non-adjusting swing lever 27 is not necessarily formed at the tip 28 of the non-adjusting swing lever 27. There is no need, and as described above, it may of course be in contact with another part of the non-adjusting swing lever 27.

弁開閉時間の相変位調整装置は、カム軸、偏心輪軸１６、可調整揺動レバ１７の他に、上述の如く、追加的に非調整揺動レバ２７を備える。該レバ２７の片側端２８は可調整揺動レバ１７の片側端２２に連動接続され、他端２９は偏心輪軸１６に固定されている。可調整揺動レバ１７と非調整揺動レバ２７の結合点は相対移動できる。即ち可調整揺動レバ１７は、ローラ３４にカム１４の基礎円１９に対し同軸的な円弧状滑り面１８を有する。この面１８は円筒セグメント面の形をなしている。非調整揺動レバ２７の先端２８は滑り軌道１８上でカム１４の基礎円の方向に、カム軸の基礎円１９の中心と非調整揺動レバ２７の先端２８におけるプッシュロッド１３の支持点との間隔が所定の弁行程に関して相変位調整装置の調整範囲にわたり常にほぼ一定に維持すべく移動する。   In addition to the cam shaft, the eccentric wheel shaft 16, and the adjustable swing lever 17, the phase displacement adjusting device for the valve opening / closing time additionally includes the non-adjustable swing lever 27 as described above. One end 28 of the lever 27 is connected to one end 22 of the adjustable swing lever 17 and the other end 29 is fixed to the eccentric wheel shaft 16. The coupling point of the adjustable swing lever 17 and the non-adjustable swing lever 27 can be moved relative to each other. That is, the adjustable swing lever 17 has an arcuate sliding surface 18 coaxial with the basic circle 19 of the cam 14 on the roller 34. This surface 18 is in the form of a cylindrical segment surface. The tip 28 of the non-adjusting swing lever 27 is in the direction of the base circle of the cam 14 on the sliding track 18, and the center of the base circle 19 of the cam shaft and the support point of the push rod 13 at the tip 28 of the non-adjusting swing lever 27. The distance of the movement is always kept substantially constant over the adjustment range of the phase displacement adjustment device for a given valve stroke.

図２と３は、本発明に基づく弁駆動装置１０、特に弁駆動装置の弁開閉時間の相変位調整装置を、制御すべき弁が閉じているが正に開き始める位置で示す。それに伴い、偏心輪軸１６の回転調整により生ずる種々の位相角により、可調整揺動レバ１７と非調整揺動レバ２７との接触面３３の位置が、揺動レバ１７の円弧状表面１８に沿って変化する。その際に通常生ずる弁遊びの変化は、本発明で提案した構造（ローラ３４がカム基礎円１９上を転がるとき、非調整揺動レバ２７におけるカム１４の基礎円１９に対して同軸的な滑り軌道２０を転がる）により完全に補償され、この結果エンジン運転中に弁遊びの変化なしに、全調整範囲にわたる弁開閉時間の無段で回転数と負荷に無関係な調整ないし相変位および弁行程調整が可能となる。これは、カム軸への可調整揺動レバ１７の接触支持により達成される。即ちこの構造では、偏心輪軸１６に対する相対位置の変化が可能となる。非調整揺動レバ２７は固定に使われ、偏心輪軸１６をプッシュロッド１３に結合する。   2 and 3 show a valve drive 10 according to the invention, in particular a phase displacement adjustment device for the valve opening and closing time of the valve drive, in the position where the valve to be controlled is closed but starts to open. Accordingly, the position of the contact surface 33 between the adjustable swing lever 17 and the non-adjustable swing lever 27 is aligned with the arcuate surface 18 of the swing lever 17 due to various phase angles generated by rotational adjustment of the eccentric wheel shaft 16. Change. The change in valve play that normally occurs at this time is the structure proposed in the present invention (when the roller 34 rolls on the cam base circle 19, the non-adjustable swing lever 27 is slipped coaxially with the base circle 19 of the cam 14). Rolling track 20), so that there is no change in valve play during engine operation, without any change in valve opening and closing time over the entire adjustment range, adjustments independent of speed and load or phase displacement and valve stroke adjustment. Is possible. This is achieved by contact support of the adjustable swing lever 17 to the camshaft. That is, with this structure, the relative position with respect to the eccentric wheel shaft 16 can be changed. The non-adjusting swing lever 27 is used for fixing, and couples the eccentric wheel shaft 16 to the push rod 13.

内燃機関の吸排気弁の本発明に基づく弁駆動装置の斜視図。The perspective view of the valve drive device based on this invention of the intake / exhaust valve of an internal combustion engine. 図１における弁開閉時間の相変位調整装置の斜視図。The perspective view of the phase displacement adjustment apparatus of the valve opening / closing time in FIG. 弁が閉じられているが正に開放を始める本発明に基づく弁駆動装置の位置における図２の配置構造の部分側面図。FIG. 3 is a partial side view of the arrangement of FIG. 2 in the position of a valve drive according to the present invention with the valve closed but just beginning to open.

符号の説明Explanation of symbols

１０ 弁駆動装置、１１ シリンダヘッド、１２ ロッカアーム、１３ プッシュロッド、１４ カム、１６ 偏心輪軸、１７ 可調整揺動レバ、１８ 円弧状表面、１９ カムの基礎円、２０ 円弧状滑り面、２７ 非調整揺動レバ、２８ 片側端、２９ 反対側端、３１ 支持点、３２ 爪状延長部、３３ 接触面、３４ ローラ DESCRIPTION OF SYMBOLS 10 Valve drive device, 11 Cylinder head, 12 Rocker arm, 13 Push rod, 14 Cam, 16 Eccentric wheel shaft, 17 Adjustable swing lever, 18 Arc-shaped surface, 19 Cam basic circle, 20 Arc-shaped sliding surface, 27 Non-adjustment Swing lever, 28 One end, 29 Opposite end, 31 Support point, 32 Claw-shaped extension, 33 Contact surface, 34 Roller

Claims (3)

少なくとも１つのロッカアーム（１２）を備え、該ロッカアームないし各ロッカアーム（１２）の片側端が各々少なくとも１つの吸排気弁に作用し、反対側端が各々プッシュロッド（１３）にヒンジ結合され、該プッシュロッドないし各プッシュロッド（１３）が弁開閉時間の相変位調整装置に連動接続され、この調整装置がプッシュロッド（１３）毎に可調整揺動レバ（１７）を有し、該レバ（１７）が一方では偏心輪軸（１６）と共働し、他方ではカム軸のカム（１４）と共働する内燃機関における吸排気弁の弁駆動装置において、
可調整揺動レバ（１７）がその片側端（２２）にカム（１４）の基礎円（１９）上を転がるローラ（３４）を備え、非調整揺動レバ（２７）を介してプッシュロッド（１３）に、非調整揺動レバ（２７）がそこに存在する円弧状滑り面（２０）でカム（１４）の基礎円（１９）の方向に可調整揺動レバ（１７）の円弧状表面（１８）を介して変位するように作用し、前記非調整揺動レバ（２７）がその片側端（２８）に可調整揺動レバ（１７）の側の面に前記円弧状滑り面（２０）を有し、該滑り面（２０）が少なくとも部分的にカム（１４）の基礎円（１９）に対して同心的ないし同軸的に円筒セグメント面の形に形成されたことを特徴とする弁駆動装置。 At least one rocker arm (12), one end of each rocker arm or each rocker arm (12) acting on at least one intake / exhaust valve, and the other end hinged to each push rod (13). The rod or each push rod (13) is connected to a phase displacement adjusting device for valve opening / closing time, and this adjusting device has an adjustable swing lever (17) for each push rod (13), and the lever (17) However, in the valve drive device of the intake and exhaust valves in the internal combustion engine that cooperates with the eccentric wheel shaft (16) on the one hand and the cam (14) on the other hand,
The adjustable swing lever (17) is provided with a roller (34) that rolls on the base circle (19) of the cam (14) at one end (22), and a push rod (27) through the non-adjustable swing lever (27). 13) The arcuate surface of the adjustable rocking lever (17) in the direction of the base circle (19) of the cam (14) with the arcuate sliding surface (20) where the non-adjusting rocking lever (27) is present. The non-adjustable swinging lever (27) acts on the surface of the adjustable swinging lever (17) at one end (28) of the non-adjustable swinging lever (27). And the sliding surface (20) is formed at least partially in the form of a cylindrical segment surface concentrically or coaxially with the base circle (19) of the cam (14) Drive device. 非調整揺動レバ（２７）の片側端（２８）が爪状延長部としてこの延長部（３２）が可調整揺動レバ（１７）のローラ（３４）の円弧状表面（１８）を部分的に同心的に包囲するように形成され、この結果ローラ（３４）の滑り面（１８）と非調整揺動レバ（２７）の滑り軌道（２０）との接触面（３３）が、弁の閉鎖時、カム（１４）の基礎円（１９）の円周にわたり比較的広く非調整揺動レバ（２７）のプッシュロッド（１３）の支持点（３１）から押し離され、非調整揺動レバ（２７）の他端（２９）が偏心輪軸（１６）に直接ヒンジ結合されたことを特徴とする請求項１記載の弁駆動装置。   One end (28) of the non-adjustable swing lever (27) is a claw-like extension, and this extension (32) partially covers the arcuate surface (18) of the roller (34) of the adjustable swing lever (17). The contact surface (33) between the sliding surface (18) of the roller (34) and the sliding track (20) of the non-adjusting rocking lever (27) is confined so as to close the valve. At this time, the cam (14) is pushed relatively away from the support point (31) of the push rod (13) of the non-adjusting swing lever (27) over the circumference of the basic circle (19) of the cam (14), and the non-adjusting swing lever ( 27. The valve drive according to claim 1, wherein the other end (27) of 27) is directly hinged to the eccentric wheel shaft (16). 弁の閉鎖時、可調整揺動レバ（１７）の円弧状表面（１８）と非調整揺動レバ（２７）の円弧状滑り面（２０）との接触面（３３）が、所望通りに変化する弁行程に関係して、可調整揺動レバ（１７）と非調整揺動レバ（２７）との相互作用によって変化される偏心輪軸（１６）上の偏心輪の調整範囲にわたり配置されたことを特徴とする請求項１又は２記載の弁駆動装置。

When the valve is closed, the contact surface (33) between the arcuate surface (18) of the adjustable swing lever (17) and the arcuate sliding surface (20) of the non-adjustable swing lever (27) changes as desired. In relation to the valve stroke to be performed, it is arranged over the adjustment range of the eccentric wheel on the eccentric wheel shaft (16) which is changed by the interaction between the adjustable swing lever (17) and the non-adjustable swing lever (27). The valve drive device according to claim 1 or 2, characterized by the above-mentioned.

JP2005330562A 2004-11-27 2005-11-15 Valve drive device for intake and exhaust valves of internal combustion engine Pending JP2006153008A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102004057439A DE102004057439A1 (en) 2004-11-27 2004-11-27 Valve operating mechanism for gas exchange valve of diesel engine, has non-adjustable oscillating arm that is shifted in direction of base circle of cam at sliding surface over circular arc-shaped upper surface of adjustable oscillating arm

Publications (1)

Publication Number Publication Date
JP2006153008A true JP2006153008A (en) 2006-06-15

Family

ID=35458800

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2005330562A Pending JP2006153008A (en) 2004-11-27 2005-11-15 Valve drive device for intake and exhaust valves of internal combustion engine

Country Status (5)

Country Link
JP (1) JP2006153008A (en)
KR (1) KR20060059817A (en)
CN (1) CN100582443C (en)
DE (1) DE102004057439A1 (en)
FI (1) FI20051195A7 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102937040A (en) * 2011-07-02 2013-02-20 曼卡车和巴士股份公司 Valve drive part for at least one valve of a combustion engine

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006028348B3 (en) * 2006-06-20 2007-10-31 Siemens Ag Rolling bearing device has locking element arranged so that in cavity of cylinder-shaped element it is coupled with positive locking with regard to axial and rotational direction in regard to center axis of cylinder-shaped element
US7849828B2 (en) * 2008-03-05 2010-12-14 Gm Global Technology Operations, Inc. Rocker arm assembly
US8118003B2 (en) 2008-03-12 2012-02-21 Kawasaki Jukogyo Kabushiki Kaisha Valve operating system
US8113163B2 (en) * 2009-03-09 2012-02-14 GM Global Technology Operations LLC Concentric camshaft and method of assembly
CH701760A8 (en) * 2009-09-10 2012-02-29 Eth Zuerich Turbocharged reciprocating piston engine with connected pressure tank for turbocharger bridging and method for operating the same.
WO2011015336A1 (en) 2009-08-03 2011-02-10 Eth Zurich Turbocharged reciprocating piston engine having a connected pressure tank for bridging turbo lag, and method for operating said engine
KR101235052B1 (en) * 2010-12-06 2013-02-19 현대자동차주식회사 Varible vavle lift apparatus
EP2803829A1 (en) * 2013-05-14 2014-11-19 Caterpillar Motoren GmbH & Co. KG Flexible cam follower
CN103758600A (en) * 2014-02-18 2014-04-30 中国船舶重工集团公司第七一一研究所 Device and method for controlling valve timing adjustment in diesel engine
EP3337960B2 (en) 2015-08-19 2022-11-16 Volvo Truck Corporation A variable valve actuation mechanism, an internal combustion engine, and a vehicle
CN114151158B (en) * 2021-11-26 2023-05-02 哈尔滨工程大学 Structure of full-variable air distribution device

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS634312U (en) * 1986-06-27 1988-01-12
JPH0693816A (en) * 1992-09-16 1994-04-05 Toyota Motor Corp Valve mechanism of internal combustion engine
DE4330913A1 (en) * 1993-09-11 1995-03-16 Mak Maschinenbau Krupp Valve gear for internal combustion engines
DE10041466A1 (en) * 2000-08-23 2002-03-21 Man B & W Diesel Ag Drive unit for gas shuttle valve of internal combustion engine, has slidable valve adjustment units formed between rocker arms and rollers arranged on cams

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4220816A1 (en) * 1992-06-25 1994-01-05 Schaeffler Waelzlager Kg Adjustable valve control for IC engine - has adjustable intermediate member between cam and pivot lever along guide path
US5666913A (en) * 1996-05-29 1997-09-16 Cummins Engine Company, Inc. Variable timing cam follower lever assembly
JP2001164911A (en) * 1999-12-10 2001-06-19 Yamaha Motor Co Ltd Valve train mechanism of 4-cycle engine

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS634312U (en) * 1986-06-27 1988-01-12
JPH0693816A (en) * 1992-09-16 1994-04-05 Toyota Motor Corp Valve mechanism of internal combustion engine
DE4330913A1 (en) * 1993-09-11 1995-03-16 Mak Maschinenbau Krupp Valve gear for internal combustion engines
DE10041466A1 (en) * 2000-08-23 2002-03-21 Man B & W Diesel Ag Drive unit for gas shuttle valve of internal combustion engine, has slidable valve adjustment units formed between rocker arms and rollers arranged on cams

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102937040A (en) * 2011-07-02 2013-02-20 曼卡车和巴士股份公司 Valve drive part for at least one valve of a combustion engine

Also Published As

Publication number Publication date
KR20060059817A (en) 2006-06-02
DE102004057439A1 (en) 2006-06-01
FI20051195L (en) 2006-05-28
CN1782333A (en) 2006-06-07
FI20051195A7 (en) 2006-05-28
CN100582443C (en) 2010-01-20
FI20051195A0 (en) 2005-11-24

Similar Documents

Publication Publication Date Title
US6941910B2 (en) Adjustable valve control system with twin cams and cam lift summation lever
JP4278590B2 (en) Variable valve operating device for internal combustion engine
JPH09506402A (en) Variable valve lift mechanism for internal combustion engine
JP4283999B2 (en) Valve timing mechanism for internal combustion engine
US7299775B2 (en) Variable valve operating device
JP2006153008A (en) Valve drive device for intake and exhaust valves of internal combustion engine
JP2006153009A (en) Valve drive device for intake and exhaust valves of internal combustion engine
US6491008B1 (en) Variable valve timing adjustable roller rocker arm assembly
EP1243765A1 (en) Internal combustion engine with variable valve lift
US8042505B2 (en) Internal combustion engine comprising a variable valve drive
JP2005214199A (en) Valve drive device for intake and exhaust valves of internal combustion engine
KR101317140B1 (en) Continuous variable valve lift apparatus
JP3914631B2 (en) Variable valve operating device for internal combustion engine
JP4289193B2 (en) Variable valve gear for engine
JP2003343224A (en) Variable valve train of internal combustion engine
JP2000213318A (en) Variable valve train for internal combustion engines
JP3917755B2 (en) Variable valve operating device for internal combustion engine
JP4469341B2 (en) Variable valve mechanism
JP3347419B2 (en) Camshaft phase change device
JP4031973B2 (en) Variable valve operating device for internal combustion engine
US7412951B2 (en) Valve gear for load change valves of four-stroke internal combustion engines
JP2004521245A (en) Variable valve mechanism
KR101088176B1 (en) Continuously variable valve drive
US7302923B2 (en) Variable valve timing device adapted for internal combustion engine
JP4552707B2 (en) Variable valve operating device for internal combustion engine

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20080708

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20100419

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20100511

A601 Written request for extension of time

Free format text: JAPANESE INTERMEDIATE CODE: A601

Effective date: 20100811

A602 Written permission of extension of time

Free format text: JAPANESE INTERMEDIATE CODE: A602

Effective date: 20100816

A601 Written request for extension of time

Free format text: JAPANESE INTERMEDIATE CODE: A601

Effective date: 20100907

A602 Written permission of extension of time

Free format text: JAPANESE INTERMEDIATE CODE: A602

Effective date: 20100910

A02 Decision of refusal

Free format text: JAPANESE INTERMEDIATE CODE: A02

Effective date: 20110208