JP2561724B2 - Internal combustion engine rocker arm - Google Patents
Internal combustion engine rocker armInfo
- Publication number
- JP2561724B2 JP2561724B2 JP1019281A JP1928189A JP2561724B2 JP 2561724 B2 JP2561724 B2 JP 2561724B2 JP 1019281 A JP1019281 A JP 1019281A JP 1928189 A JP1928189 A JP 1928189A JP 2561724 B2 JP2561724 B2 JP 2561724B2
- Authority
- JP
- Japan
- Prior art keywords
- valve shaft
- rocker arm
- contact
- pressing portion
- valve
- 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.)
- Expired - Fee Related
Links
Description
【発明の詳細な説明】 産業上の利用分野 本発明は、内燃機関の吸気弁，排気弁を開閉駆動する
ロッカーアームの改良に関する。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a rocker arm that drives an intake valve and an exhaust valve of an internal combustion engine to open and close.
従来の技術 第５図は従来における内燃機関の動弁装置の一例を図
示したもので、シリンダヘッド１上に固定された略球状
をなすピボット部２に吸・排気弁３を開閉するロッカー
アーム４の一端が揺動自由に嵌合支持されている。この
ロッカーアーム４は、背面に略円弧形に湾曲したカム当
接部11を有し、上方に位置するカムシャフト12のカム12
aが該カム当接部11に当接している。そして、揺動端部
における弁軸押圧部５が吸・排気弁３の端部を押圧する
ようになっている。2. Description of the Related Art FIG. 5 shows an example of a conventional valve operating system for an internal combustion engine. A rocker arm 4 for opening and closing an intake / exhaust valve 3 is mounted on a cylinder head 1 and has a substantially spherical pivot portion 2. One end of is fitted and supported so that it can swing freely. The rocker arm 4 has a cam contact portion 11 that is curved in a substantially arc shape on the back surface, and has a cam 12 of a cam shaft 12 located above.
a is in contact with the cam contact portion 11. Then, the valve shaft pressing portion 5 at the swinging end portion presses the end portion of the intake / exhaust valve 3.
詳しくは、吸・排気弁３の弁軸端部3aにコッタ15を介
してスプリングリテーナ13が固定されているとともに、
弁軸端部3aの端面６を覆うように円板状のシム14がスプ
リングリテーナ13内周に配置されており、該シム14上面
の平坦な当接面14aに上記弁軸押圧部５が当接してい
る。また、上記弁軸押圧部５は、ロッカーアーム４の揺
動を考慮して、カムシャフト12の軸方向に平行な円筒面
をなしている。特に、第６図にその投影形状（第５図の
矢印Ａ方向からの投影形状）を示すように、カムシャフ
ト12軸方向の幅が、弁軸端部3aの端面６の直径よりも小
さい一定幅Ｍとなった円筒面に形成されている。尚、図
５の符号Ｒは、その円筒面の曲率半径を示す。（実開昭
56−122706号公報参照）。Specifically, the spring retainer 13 is fixed to the valve shaft end 3a of the intake / exhaust valve 3 via the cotter 15, and
A disc-shaped shim 14 is arranged on the inner periphery of the spring retainer 13 so as to cover the end surface 6 of the valve shaft end portion 3a, and the valve shaft pressing portion 5 contacts the flat contact surface 14a on the upper surface of the shim 14. Touching. The valve shaft pressing portion 5 has a cylindrical surface parallel to the axial direction of the camshaft 12 in consideration of the rocking of the rocker arm 4. In particular, as shown in the projected shape (projected shape from the direction of arrow A in FIG. 5) in FIG. 6, the width in the axial direction of the camshaft 12 is smaller than the diameter of the end surface 6 of the valve shaft end 3a. It is formed on a cylindrical surface having a width M. The reference symbol R in FIG. 5 indicates the radius of curvature of the cylindrical surface. (Actual development
56-122706).
発明が解決しようとする課題 上記の動弁機構においては、カムシャフト12が回転す
ると、ロッカーアーム４がカムシャフト12aに押圧され
て第５図中の矢印Ｂのように揺動し、弁軸押圧部５がシ
ム14を介して弁軸端部3aを押圧するので、吸・排気弁３
は開弁する。この際、ロッカーアーム４はピボット部２
を中心に揺動するのに対し、吸・排気弁３は直線的に移
動するので、円筒面からなる弁軸押圧部５とシム14の当
接面14aとの接触部は、摺動しつつ移動することにな
る。すなわち、円筒面からなる弁軸押圧部５とシム14の
平坦な当接面14aとは線接触となり、その接触線はカム
シャフト12軸方向と平行となるが、この接触線の位置
が、第６図にL1,L2等として示すように、ロッカーアー
ム４の揺動に伴い、カムシャフト12と直交する方向（第
６図の矢印Ｃ方向）に沿って往復移動することになる。
ここで、図中の接触線L1は、ロッカーアーム４が適宜な
中間位置まで揺動して弁軸押圧部５とシム14とが互いに
それらの中央部（矢印Ｃ方向の中央部）で接している場
合の接触線を示し、接触線L2は、弁リフトが最大となる
までロッカーアーム４が揺動した状態での接触線を示し
ている。DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention In the above valve operating mechanism, when the cam shaft 12 rotates, the rocker arm 4 is pressed by the cam shaft 12a and swings as shown by an arrow B in FIG. Since the part 5 presses the valve shaft end 3a through the shim 14, the intake / exhaust valve 3
Opens the valve. At this time, the rocker arm 4 is attached to the pivot portion 2
While the intake / exhaust valve 3 moves linearly while swinging around, the contact portion between the valve shaft pressing portion 5 made of a cylindrical surface and the contact surface 14a of the shim 14 slides while sliding. Will move. That is, the valve shaft pressing portion 5 made of a cylindrical surface and the flat contact surface 14a of the shim 14 make a line contact, and the contact line is parallel to the axial direction of the camshaft 12, but the position of this contact line is As shown by L1, L2, etc. in FIG. 6, as the rocker arm 4 swings, the rocker arm 4 reciprocates along a direction orthogonal to the camshaft 12 (direction of arrow C in FIG. 6).
In the contact line L1 in the figure, the rocker arm 4 swings to an appropriate intermediate position, and the valve shaft pressing portion 5 and the shim 14 contact each other at their central portions (the central portion in the direction of arrow C). The contact line when the rocker arm 4 is rocked until the valve lift is maximized is shown in FIG.
ところで、上記の構成においては、バルブリフト中に
ロッカーアーム４が何等かの原因で相対的に傾いて弁軸
押圧部５がシム14の当接面14aに片当たり状態となった
場合に、例えば上記接触線L1の上では、点E1が接触点と
なるが、接触線L2の上では、点E2が接触点となる。ここ
で、前者の接触点E1は、弁軸端部3aの端面６の投影円内
に位置するので、大きな問題とはならないが、後者の接
触点E2は、端面６の投影円より外側となる。従って、端
面６よりも外側にオーバーハングした位置でシム14を押
圧することになり、シム14がてこ作用により起き上がろ
うとしたり、シム14と端面６周縁とが所謂エッヂ当たり
したりし、この結果、シム14がガタついたり、打音を発
生したりし、さらには、吸・排気弁の不整運動を発生す
るという問題があった。By the way, in the above configuration, when the rocker arm 4 is relatively inclined for some reason during the valve lift and the valve shaft pressing portion 5 is in a one-side contact state with the contact surface 14a of the shim 14, for example, On the contact line L1, the point E1 is the contact point, but on the contact line L2, the point E2 is the contact point. Here, since the former contact point E1 is located within the projected circle of the end face 6 of the valve shaft end 3a, it does not pose a big problem, but the latter contact point E2 is outside the projected circle of the end face 6. . Therefore, the shim 14 is pressed at a position overhanging to the outside of the end face 6, the shim 14 tries to rise due to the lever action, and the shim 14 and the peripheral edge of the end face 6 hit a so-called edge, and as a result, There was a problem that the shim 14 rattled, struck, and caused irregular movement of the intake and exhaust valves.
尚、シム14を介装せずに、ロッカーアーム４の弁軸押
圧部５が直接に弁軸端部3aの平坦な端面６を押圧する構
成の動弁機構もあるが、この形式のものにおいては、弁
軸押圧部５が端面６の周縁とエッジ当たりすることにな
り、同様に打音を発生したり、吸・排気弁の不整運動を
発生するという問題が生じる。There is also a valve operating mechanism in which the valve shaft pressing portion 5 of the rocker arm 4 directly presses the flat end surface 6 of the valve shaft end portion 3a without interposing the shim 14, but in this type, Causes the valve shaft pressing portion 5 to come into edge contact with the peripheral edge of the end face 6, and similarly causes a problem that a tapping sound is generated or irregular movement of the intake / exhaust valve is generated.
本発明は、このような従来の問題点に着目してなされ
たもので、その目的とするところは、ロッカーアームの
弁軸押圧部が傾いても吸・排気弁の不整運動や異音等が
発生しないようにすることにある。The present invention has been made in view of such conventional problems, and an object thereof is to prevent irregular movement of the intake / exhaust valve or abnormal noise even if the valve shaft pressing portion of the rocker arm is inclined. To prevent it from happening.
課題を解決するための手段 このため本発明は、カムに従動して揺動し、かつ弁軸
端部あるいは該軸端部に重ねた円板状シムの平坦な当接
面に摺接する揺動端部の弁軸押圧部がカムシャフト軸方
向に平行な円筒面に形成されてなる内燃機関のロッカー
アームにおいて、円筒面からなる弁軸押圧部の中央部の
カムシャフト軸方向の幅を弁軸端部の端面の径以下に設
定するとともに、上記当接面と上記弁軸押圧部との接触
線のカムシャフト軸方向の幅が、ロッカーアームの揺動
に伴う実質的な接触範囲内において弁軸端部の端面の投
影円よりカムシャフト軸方向外側にはみ出ることのない
ように、弁軸押圧部の端部におけるカムシャフト軸方向
の幅を、弁軸押圧部の中央部に比べて狭く形成したこと
を特徴としている。Means for Solving the Problems Therefore, according to the present invention, the cam is rocked by being driven by a cam and is slidably contacted with a flat contact surface of a valve shaft end portion or a disk-shaped shim stacked on the valve shaft end portion. In a rocker arm of an internal combustion engine in which the end portion of the valve shaft pressing portion is formed on a cylindrical surface parallel to the cam shaft axial direction, the width of the central portion of the valve shaft pressing portion formed of the cylindrical surface in the cam shaft axial direction is defined as The width of the contact line between the contact surface and the valve shaft pressing portion in the cam shaft axial direction is set to be equal to or less than the diameter of the end surface of the end portion of the valve within a substantial contact range accompanying rocker arm swing. The width of the valve shaft pressing part in the cam shaft axial direction is made narrower than the center part of the valve shaft pressing part so that it does not extend outside the projected circle of the end face of the shaft end in the cam shaft axial direction. It is characterized by having done.
作用 上記のように構成することにより、ロッカーアームが
傾くなどにより、ロッカーアームの弁軸押圧部と吸・排
気弁側の当接面との間に片当たりが発生しても、その接
触点は常に弁軸端部の端面の投影円内側に位置する。つ
まり、端面の投影円内側で押圧力を受けることになり、
シムを具備するものでは、シムのガタつき等が生じな
い。またシムを具備しないものでは、弁軸端部のエッヂ
と弁軸押圧部とのエッジ当たり等が回避される。Action With the above-described configuration, even if one-sided contact occurs between the rocker arm's valve shaft pressing portion and the contact surface on the intake / exhaust valve side due to tilting of the rocker arm, the contact point is It is always located inside the projected circle of the end face of the valve shaft end. In other words, the pressure is applied inside the projected circle of the end face,
With a shim, the shim does not rattle. Further, in the case where the shim is not provided, edge contact between the edge of the valve shaft end portion and the valve shaft pressing portion is avoided.
実施例 以下本発明を図面に基づいて説明する。第１図及び第
２図は本発明の一実施例を示している。この実施例は、
第４図に示すように、ロッカーアーム４の一端が略球状
のピボット部２に揺動自在に支持されるエンドピボット
形式の動弁装置に本発明を適用したものであり、吸気２
弁式機関もしくは排気２弁式機関に好適なように、ロッ
カーアーム４の揺動端部が二股状に形成され、各ロッカ
ーアーム４が一対の吸・排気弁を開閉駆動するようにな
っている。尚、吸・排気弁３やシム14等の構成は、前述
した従来のものと同様であるので、その図示は省略す
る。第１図はロッカーアーム４を下面側つまり吸・排気
弁３側より見た平面図、第２図は同じく下側面より見た
斜視図である。EXAMPLES The present invention will be described below with reference to the drawings. 1 and 2 show an embodiment of the present invention. This example is
As shown in FIG. 4, the present invention is applied to an end-pivot type valve operating device in which one end of a rocker arm 4 is swingably supported by a pivot part 2 having a substantially spherical shape.
As is suitable for a valve type engine or an exhaust two-valve engine, the rocker arm 4 has a swinging end formed into a bifurcated shape, and each rocker arm 4 drives a pair of intake and exhaust valves to open and close. . The intake / exhaust valve 3, the shim 14, and the like have the same configurations as the above-described conventional ones, and therefore their illustrations are omitted. FIG. 1 is a plan view of the rocker arm 4 as seen from the lower surface side, that is, the intake / exhaust valve 3 side, and FIG. 2 is a perspective view as seen from the lower side surface.
ロッカーアーム４の一対の弁軸押圧部５は、互いに同
一形状をなしている。この弁軸押圧部５は、第３図の
（ａ）に側面形状を示すように、適宜な曲率半径Ｒの円
筒面、詳しくは、カムシャフト12の軸方向と平行な円筒
面をなしており、ロッカーアーム４の揺動端部の下面に
ボス状に膨出形成されている。そして、その四隅が切欠
かれ、中央部5aで最もカムシャフト12軸方向の幅が広
く、かつ端部5bでは中央部5aよりもカムシャフト12軸方
向の幅が徐々に狭くなっている。尚、この弁軸押圧部５
は、前述したようにシム14の平坦な当接面14aに摺接す
る。The pair of valve shaft pressing portions 5 of the rocker arm 4 have the same shape. The valve shaft pressing portion 5 has a cylindrical surface having an appropriate radius of curvature R, specifically, a cylindrical surface parallel to the axial direction of the camshaft 12, as shown in the side view of FIG. A boss-like bulge is formed on the lower surface of the rocking end of the rocker arm 4. The four corners are cut out, and the width in the axial direction of the camshaft 12 is widest in the central portion 5a, and the width in the axial direction of the camshaft 12 is gradually narrower in the end portion 5b than in the central portion 5a. The valve shaft pressing portion 5
Touches the flat contact surface 14a of the shim 14 as described above.
第３図の（ｂ）は、この弁軸押圧部５の形状と弁軸端
部3aの端面６の投影円との関係を示している。この図に
明らかなように、弁軸押圧部５の中央部5aのカムシャフ
ト12軸方向の幅は、端面６の径より僅かに小さく設定さ
れている。そして、弁軸押圧部５はシム14に対し、ロッ
カーアーム４の揺動に伴い図示した接触範囲内で線接触
するが、この接触範囲の全範囲において、両者の接触線
のカムシャフト12軸方向の幅が端面６の投影円より外側
にはみ出ることのないように、端部5bの傾斜した側縁5c
の形状，寸法が設定されている。換言すれば、接触範囲
が上記投影円の内側に入るように、一定幅の円筒面とし
たものから四隅の符号10として示す部分を切り欠いた形
状となっている。また、上記端部5bには、更に、幅の狭
い延長部5dが一定幅で延長形成されているが、この延長
部5dは、通常はシム14と接触しない。尚、図示例では、
弁軸押圧部５の各側縁が直線的な形状となっているが、
勿論曲線的に加工してもよい。また、第１図，第２図に
示すように、左右一対の弁軸押圧部５の内側に沿ってガ
イド壁16が設けられている。このガイド壁16は、第４図
のようにそれぞれシム14の外周に係合し、ロッカーアー
ム４の脱落を防止している。FIG. 3B shows the relationship between the shape of the valve shaft pressing portion 5 and the projected circle of the end surface 6 of the valve shaft end portion 3a. As is clear from this figure, the width of the central portion 5a of the valve shaft pressing portion 5 in the axial direction of the camshaft 12 is set to be slightly smaller than the diameter of the end surface 6. The valve shaft pressing portion 5 makes a line contact with the shim 14 within the contact range shown in the drawing as the rocker arm 4 swings. In the entire contact range, the contact lines of the two are in the axial direction of the camshaft 12. Of the end face 5b so that the width of the edge does not extend outside the projected circle of the end face 6
The shape and dimensions of are set. In other words, in order to make the contact area inside the projection circle, a cylindrical surface having a constant width is cut out from the four corners indicated by reference numerals 10. Further, the end portion 5b is further formed with an extension portion 5d having a narrow width and extending with a constant width, but the extension portion 5d normally does not contact the shim 14. In the illustrated example,
Each side edge of the valve shaft pressing portion 5 has a linear shape,
Of course, it may be curved. As shown in FIGS. 1 and 2, a guide wall 16 is provided along the inside of the pair of left and right valve shaft pressing portions 5. The guide walls 16 engage with the outer periphery of the shim 14 as shown in FIG. 4 to prevent the rocker arm 4 from falling off.
次に作用を説明する。カム12aがロッカーアーム４を
押圧して吸・排気弁３を押し下げる際に、吸・排気弁３
のシム14とロッカーアーム４の弁軸押圧部５と、僅かに
摺動しつつ線接触し、かつその接触線は第３図の接触範
囲内を移動することになる。Next, the operation will be described. When the cam 12a pushes the rocker arm 4 to push down the intake / exhaust valve 3, the intake / exhaust valve 3
The shim 14 and the valve shaft pressing portion 5 of the rocker arm 4 are in line contact with each other while sliding slightly, and the contact line moves within the contact range shown in FIG.
ここで、弁軸押圧部５と弁軸端部3aとが相対的に傾い
ていたような場合には、弁軸押圧部５とシム14当接面14
aとが片当たりするようになるが、この際に、その接触
点が、例えば第３図に点E3として示すように、弁押圧部
５の側縁に沿って得られるので、必ず、弁軸端部3a端面
６の投影円内側に位置する。つまり、端面６の投影円か
ら外側にはみ出た点を押圧することがない。従って、シ
ム14の浮き上がりやガタつき、ひいてはこれに起因する
打音の発生や吸・排気弁の不整運動などを防止できる。Here, when the valve shaft pressing portion 5 and the valve shaft end portion 3a are relatively inclined, the valve shaft pressing portion 5 and the shim 14 contact surface 14
However, at this time, since the contact point is obtained along the side edge of the valve pressing portion 5 as shown by point E3 in FIG. It is located inside the projected circle of the end face 6 of the end 3a. That is, a point protruding outward from the projected circle of the end face 6 is not pressed. Therefore, it is possible to prevent the shim 14 from being lifted up or rattling, and thus causing the generation of hammering noise and irregular movement of the intake / exhaust valve.
なお、上記実施例においては弁軸押圧部５が当接する
弁軸端部3aにシム14を重ねた構成となっているが、この
発明は、シム14を具備せずに弁軸端部3aの端面６を直接
押圧するようにしたものにおいても同様に適用できる。
この場合には、ロッカーアーム４が相対的に傾いた場合
に、端面６周縁のエッヂと弁軸押圧部５とのエッヂ当た
りが確実に防止できる。In the above embodiment, the shim 14 is superposed on the valve shaft end portion 3a with which the valve shaft pressing portion 5 abuts. However, the present invention does not include the shim 14 and the valve shaft end portion 3a does not have the shim 14. The same can be applied to the case where the end surface 6 is directly pressed.
In this case, when the rocker arm 4 is relatively inclined, the edge of the edge of the end face 6 and the edge of the valve shaft pressing portion 5 can be reliably prevented from hitting each other.
また、ロッカーアームの略中央にロッカシャフトを貫
通させ、このロッカシャフトを中心にロッカーアームが
揺動する型式の動弁装置に本発明を適用してもよい。Further, the present invention may be applied to a valve operating device of a type in which a rocker shaft penetrates approximately the center of a rocker arm and the rocker arm swings around the rocker shaft.
発明の効果 以上の説明で明らかなように、この発明によれば、ロ
ッカーアームが相対的に傾いていてシム等の当接面に片
当たりする場合でも、接触点を常に弁軸端部の端面の投
影円内側に保つことができ、シムの浮き上がりやガタつ
き、あるいは上記端面周縁とのエッヂ当たりを防止でき
る。従って、打音の発生を防止できるとともに、シムの
ガタつきによる耐久性低下等を回避できる。EFFECTS OF THE INVENTION As is apparent from the above description, according to the present invention, the contact point is always the end surface of the end portion of the valve shaft even when the rocker arm is relatively inclined and hits the contact surface such as the shim. Can be kept inside the projected circle, and it is possible to prevent the shim from rising or rattling, or from hitting the edge with the peripheral edge of the end face. Therefore, it is possible to prevent the generation of a tapping sound and to avoid the deterioration of durability due to the backlash of the shim.
更に、吸・排気弁の不整運動発生を防止でき、エンジ
ン性能の悪化を防ぐことができる。Further, it is possible to prevent irregular movements of the intake / exhaust valve, and prevent deterioration of engine performance.
第１図は本発明に係るロッカーアームの一実施例を示す
下面図、第２図は同ロッカーアームを下方より見た斜視
図、第３図は弁軸押圧部の形状を示す説明図、第４図は
このロッカーアームを用いた動弁機構の斜視図、第５図
は従来の動弁機構の一例を示す断面図、第６図は従来例
における弁軸押圧部の形状を示す説明図である。 ３……吸・排気弁、3a……弁軸端部、４……ロッカーア
ーム、５……弁軸押圧部、６……端面、14……シム。FIG. 1 is a bottom view showing an embodiment of a rocker arm according to the present invention, FIG. 2 is a perspective view of the rocker arm seen from below, and FIG. 3 is an explanatory view showing the shape of a valve shaft pressing portion. FIG. 4 is a perspective view of a valve mechanism using this rocker arm, FIG. 5 is a sectional view showing an example of a conventional valve mechanism, and FIG. 6 is an explanatory view showing the shape of a valve shaft pressing portion in the conventional example. is there. 3 ... intake / exhaust valve, 3a ... valve shaft end, 4 ... rocker arm, 5 ... valve shaft pressing part, 6 ... end face, 14 ... shim.
Claims (1)
いは該軸端部に重ねた円板状シムの平坦な当接面に摺接
する揺動端部の弁軸押圧部がカムシャフト軸方向に平行
な円筒面に形成されてなる内燃機関のロッカーアームに
おいて、 円筒面からなる弁軸押圧部の中央部のカムシャフト軸方
向の幅を弁軸端部の端面の径以下に設定するとともに、 上記当接面と上記弁軸押圧部との接触線のカムシャフト
軸方向の幅が、ロッカーアームの揺動に伴う実質的な接
触範囲内において弁軸端部の端面の投影円よりカムシャ
フト軸方向外側にはみ出ることのないように、弁軸押圧
部の端部におけるカムシャフト軸方向の幅を、弁軸押圧
部の中央部に比べて狭く形成したことを特徴とする内燃
機関のロッカーアーム。1. A valve shaft pressing portion at a swinging end portion that swings following a cam and slides in contact with a flat contacting surface of a valve shaft end portion or a disc-shaped shim stacked on the shaft end portion. In a rocker arm of an internal combustion engine formed on a cylindrical surface parallel to the camshaft axial direction, the width in the camshaft axial direction at the center of the valve shaft pressing portion made of the cylindrical surface is set to be equal to or less than the diameter of the end surface of the valve shaft end. The width of the contact line between the contact surface and the valve shaft pressing portion in the camshaft axial direction is set within a substantial contact range associated with rocker arm rocking, and the projected circle of the end surface of the valve shaft end portion is set. An internal combustion engine characterized in that the width of the end portion of the valve shaft pressing portion in the cam shaft axial direction is made narrower than the central portion of the valve shaft pressing portion so as not to protrude further outward in the cam shaft axial direction. Rocker arm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1019281A JP2561724B2 (en) | 1989-01-27 | 1989-01-27 | Internal combustion engine rocker arm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1019281A JP2561724B2 (en) | 1989-01-27 | 1989-01-27 | Internal combustion engine rocker arm |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02199205A JPH02199205A (en) | 1990-08-07 |
| JP2561724B2 true JP2561724B2 (en) | 1996-12-11 |
Family
ID=11995061
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1019281A Expired - Fee Related JP2561724B2 (en) | 1989-01-27 | 1989-01-27 | Internal combustion engine rocker arm |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2561724B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101370717B1 (en) * | 2013-03-29 | 2014-03-06 | 영신정공 주식회사 | 3 point supporting dual cylinder de-activation device |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007146731A (en) * | 2005-11-25 | 2007-06-14 | Yamaha Motor Co Ltd | Engine and vehicle |
| DE102006031945A1 (en) * | 2006-07-11 | 2008-01-24 | Schaeffler Kg | Adjustable rocker arm for valve train of internal combustion engine, has coupler located in recess of levers and brought in contact with levers for case of coupling in sectionwise, and lost-motion spring directly mounted on supporting unit |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59192606U (en) * | 1983-06-09 | 1984-12-21 | 川崎重工業株式会社 | Locker arm valve contact structure |
-
1989
- 1989-01-27 JP JP1019281A patent/JP2561724B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101370717B1 (en) * | 2013-03-29 | 2014-03-06 | 영신정공 주식회사 | 3 point supporting dual cylinder de-activation device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH02199205A (en) | 1990-08-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP2944264B2 (en) | Valve train for internal combustion engine | |
| JPH1136833A (en) | Variable valve system mechanism | |
| JP2561724B2 (en) | Internal combustion engine rocker arm | |
| US5832889A (en) | Valve driving apparatus | |
| US7552706B2 (en) | Automatic decompression mechanism for an engine | |
| JPH0246764B2 (en) | ||
| EP0125096A3 (en) | Mechanism for variably controlling an internal combustion engine valve | |
| JP2006283630A (en) | Valve gear of engine | |
| KR200155780Y1 (en) | Valve operating structure | |
| JP3389070B2 (en) | Valve train for internal combustion engine | |
| JPS603922Y2 (en) | Tappet | |
| JPS60156976A (en) | Centrifugal type automatic pressure reducing device in small type internal-combustion engine | |
| JP3450997B2 (en) | Engine decompression device | |
| JP3450996B2 (en) | Engine decompression device | |
| JPS6132092Y2 (en) | ||
| JP2005076607A (en) | Valve operation system for internal combustion engine | |
| JP3917075B6 (en) | Intake valve control mechanism of internal combustion engine | |
| KR970000748B1 (en) | Variable timing type valve driving apparatus for internal combustion engine | |
| JPS641442Y2 (en) | ||
| JPH06129213A (en) | Valve driving cam for engine | |
| KR20000003052U (en) | Valve switchgear of engine | |
| JPH0618606U (en) | Crosshead rotation prevention device | |
| JP4324064B2 (en) | Valve lift adjustment device for internal combustion engine | |
| JP2578369Y2 (en) | Valve lifter | |
| JPH0763012A (en) | Valve opening/closing mechanism for internal combustion engine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20080919 Year of fee payment: 12 |
|
| LAPS | Cancellation because of no payment of annual fees |