JPS61167405U - - Google Patents
Info
- Publication number
- JPS61167405U JPS61167405U JP5094985U JP5094985U JPS61167405U JP S61167405 U JPS61167405 U JP S61167405U JP 5094985 U JP5094985 U JP 5094985U JP 5094985 U JP5094985 U JP 5094985U JP S61167405 U JPS61167405 U JP S61167405U
- Authority
- JP
- Japan
- Prior art keywords
- rocker arm
- lever
- intake
- valve drive
- exhaust 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.)
- Pending
Links
- 238000002485 combustion reaction Methods 0.000 claims description 3
- 238000006073 displacement reaction Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
- 230000001133 acceleration Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 1
Landscapes
- Valve Device For Special Equipments (AREA)
- Valve-Gear Or Valve Arrangements (AREA)
Description
第１図は本考案に係る内燃機関の吸・排気弁駆
動装置の一実施例を示すその要部断面図、第２図
はそのリフト制御カムの駆動系を示す平面図、第
３図はリフト制御カムの取付状態を示す分解斜視
図、第４図は吸気弁のリフト特性を示すグラフ、
第５図は支持軸とスプリングとの取付状態を示す
斜視図、第６図は駆動カムリフトとカム角度との
関係を示すグラフ、第７図は弁リフトとカム角度
との関係を示すグラフ、第８図はスラスト力とカ
ム角度との関係を示すグラフ、第９図はブラケツ
トの振動加速度とカム角度との関係を示すグラフ
、第１０図はスラスト力とカム角度との関係を示
すグラフ、第１１図はブラケツトの振動加速度と
カム角度との関係を示すグラフ、第１２図はロツ
カアームに作用する力を示す概略図、第１３図は
同じくロツカアームに作用する力の関係を示す概
略図、第１４図は従来装置を示す概略構成図であ
る。
１１…吸気弁駆動カム、１２…吸気弁、１３…
ロツカアーム、１３ａ…ロツカアームの背面、１
３ｂ…支持軸、１５…レバー、１５ａ…係合溝、
１５ｄ，１５ｆ…レバーの下面、２０…リフト制
御カム、２１…弾性部材（スプリング）、Ａ，Ａ
１，Ａ２…支点位置。
Fig. 1 is a sectional view of essential parts showing an embodiment of the intake/exhaust valve drive device for an internal combustion engine according to the present invention, Fig. 2 is a plan view showing the drive system of the lift control cam, and Fig. 3 is a lift control cam drive system. An exploded perspective view showing the installation state of the control cam, and Figure 4 is a graph showing the lift characteristics of the intake valve.
FIG. 5 is a perspective view showing the mounting state of the support shaft and spring, FIG. 6 is a graph showing the relationship between drive cam lift and cam angle, FIG. 7 is a graph showing the relationship between valve lift and cam angle, and FIG. Figure 8 is a graph showing the relationship between thrust force and cam angle, Figure 9 is a graph showing the relationship between bracket vibration acceleration and cam angle, Figure 10 is a graph showing the relationship between thrust force and cam angle, and Figure 9 is a graph showing the relationship between thrust force and cam angle. Figure 11 is a graph showing the relationship between the vibration acceleration of the bracket and the cam angle, Figure 12 is a schematic diagram showing the force acting on the rocker arm, Figure 13 is a schematic diagram showing the relationship between the force acting on the rocker arm, and Figure 14 is a graph showing the relationship between the force acting on the rocker arm. The figure is a schematic configuration diagram showing a conventional device. 11...Intake valve drive cam, 12...Intake valve, 13...
Rotsuka arm, 13a...Back of Rotsuka arm, 1
3b...support shaft, 15...lever, 15a...engaging groove,
15d, 15f... Lower surface of lever, 20... Lift control cam, 21... Elastic member (spring), A, A
1 , A2 ...Fulcrum position.
Claims (1)
ドとに両端が係合するロツカアームの湾曲形成さ
れた背面を、該背面に沿つて機関本体に揺動自在
に取り付けられたレバーの下面の支点接触させ、
該レバーの一端部に係合させたリフト制御カムの
回動量を制御してレバーの揺動位置を変化させる
ことにより、レバーとロツカアームとの接触する
支点位置を変化させて吸・排気弁のリフト特性を
可変制御する内燃機関の吸・排気弁駆動装置にお
いて、上記ロツカアームに支持された支持軸を、
上記レバーに形成した係合溝に嵌挿してロツカア
ームの長手方向の変位を規制するとともに、上記
支持軸をロツカアームの駆動カム側の端部に向つ
て付勢する弾性部材を設けたことを特徴とする内
燃機関の吸・排気弁駆動装置。 The curved back of the rocker arm, whose both ends engage the intake/exhaust valve drive cam and the stem ends of the intake/exhaust valves, is attached to the fulcrum of the lower surface of the lever, which is swingably attached to the engine body along the back of the rocker arm. contact,
By controlling the amount of rotation of the lift control cam engaged with one end of the lever and changing the rocking position of the lever, the fulcrum position where the lever and rocker arm come into contact is changed and the intake/exhaust valves are lifted. In an internal combustion engine intake/exhaust valve drive device whose characteristics are variably controlled, the support shaft supported by the rocker arm is
An elastic member is provided which is fitted into an engagement groove formed in the lever to restrict longitudinal displacement of the rocker arm and urges the support shaft toward the end of the rocker arm on the driving cam side. Intake/exhaust valve drive device for internal combustion engines.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5094985U JPS61167405U (en) | 1985-04-05 | 1985-04-05 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5094985U JPS61167405U (en) | 1985-04-05 | 1985-04-05 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61167405U true JPS61167405U (en) | 1986-10-17 |
Family
ID=30569559
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5094985U Pending JPS61167405U (en) | 1985-04-05 | 1985-04-05 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61167405U (en) |
-
1985
- 1985-04-05 JP JP5094985U patent/JPS61167405U/ja active Pending
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