JPS60122510U - Internal combustion engine intake and exhaust valve drive device - Google Patents
Internal combustion engine intake and exhaust valve drive deviceInfo
- Publication number
- JPS60122510U JPS60122510U JP894684U JP894684U JPS60122510U JP S60122510 U JPS60122510 U JP S60122510U JP 894684 U JP894684 U JP 894684U JP 894684 U JP894684 U JP 894684U JP S60122510 U JPS60122510 U JP S60122510U
- Authority
- JP
- Japan
- Prior art keywords
- exhaust valve
- cam
- internal combustion
- drive device
- combustion engine
- 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
Landscapes
- Valve-Gear Or Valve Arrangements (AREA)
- Valve Device For Special Equipments (AREA)
- Output Control And Ontrol Of Special Type Engine (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図は従来の内燃機関の吸排気弁駆動装置を一部断面
して示す側面図、第２図は機関のクランク軸回転角とバ
ルブリフトとの関係において制御カムのリフト量を示す
グラフ、第３図は従来の吸排気弁駆動装置に供される制
御カムとレバーの当接位置を示す要部断面図、第４図は
本考案の吸排気弁駆動装置を一部断面して示す側面図、
第５図は本考案に供される駆動機構の油圧アクチュエー
タと回転角峯ンサの配置状態を示す説明図、第６図は同
駆動機構の油圧回路を示す回路図、第７図は本考案に供
される制御カムのリフト特性を示す説明図、第８図は制
御カムの他側を示す要部平面図、第９図は第８図の■−
■線断面図、第１０図は４気筒機関におけるクランク軸
回転角と吸気弁リフト及び制御カムに掛る荷重との関係
を示す説明図、第１１図は本考案に供される制御カムの
他゛例とレバーの当接状態を示す要部断面図である。
、１１・・・バルブ駆動カム、１２・・・吸排気弁、１
２ａ・・・バルブステム、１７・・中ツカアーム、２０
・・・レバー、２５・・・制御カム。FIG. 1 is a partially sectional side view of a conventional intake and exhaust valve drive device for an internal combustion engine, and FIG. 2 is a graph showing the lift amount of the control cam in relation to the engine crankshaft rotation angle and valve lift. Fig. 3 is a cross-sectional view of main parts showing the contact position of the control cam and lever provided in a conventional intake/exhaust valve drive device, and Fig. 4 is a side view showing a partially sectional view of the intake/exhaust valve drive device of the present invention. figure,
Fig. 5 is an explanatory diagram showing the arrangement of the hydraulic actuator and rotation angle sensor of the drive mechanism used in the present invention, Fig. 6 is a circuit diagram showing the hydraulic circuit of the drive mechanism, and Fig. 7 is used in the present invention. An explanatory diagram showing the lift characteristics of the control cam provided, FIG. 8 is a plan view of the main part showing the other side of the control cam, and FIG.
■ Line sectional view, Figure 10 is an explanatory diagram showing the relationship between the crankshaft rotation angle, intake valve lift, and load applied to the control cam in a four-cylinder engine, and Figure 11 is a diagram showing the relationship between the crankshaft rotation angle and the load applied to the control cam in a four-cylinder engine. FIG. 3 is a sectional view of a main part showing an example and a state in which the lever is in contact with each other.
, 11... Valve drive cam, 12... Intake/exhaust valve, 1
2a...Valve stem, 17...Middle arm, 20
...Lever, 25...Control cam.
Claims (1)
動カムに当接し他端がバルブステムに連係スる辞ンカア
ームと、該ロッカーアームの背面に略沿って配設され該
ロッカーアームの揺動支点となるように回動可能に支持
されたレバーと、該レバーの上面に当接して該レバーの
傾斜を制御す、る制御カムと、該制御カムを機関の運転
条件に応じて回転させる駆動機構とを備える内燃機関の
吸排気弁駆動装置であって、上記制御カムはカムリフト
量最大位置では上記レバー上面に対し少なくとも２点で
支持するプロフィルを有し、且つ上記２点を結ぶ直線が
該制御カムの半径方向に対して垂直に形成されることを
特徴とする内燃機関の吸排気弁駆動装置。A drive cam that rotates in synchronization with engine rotation, a rotor arm that has one end in contact with the drive cam and the other end that is linked to the valve stem, and a rocker arm that is disposed approximately along the back surface of the rocker arm and that swings the rocker arm. A lever rotatably supported to serve as a dynamic fulcrum, a control cam that comes into contact with the upper surface of the lever to control the inclination of the lever, and the control cam is rotated according to the operating conditions of the engine. an intake/exhaust valve drive device for an internal combustion engine comprising a drive mechanism, wherein the control cam has a profile supporting the upper surface of the lever at at least two points at a maximum cam lift position, and a straight line connecting the two points is provided. An intake and exhaust valve drive device for an internal combustion engine, characterized in that it is formed perpendicular to the radial direction of the control cam.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP894684U JPS60122510U (en) | 1984-01-25 | 1984-01-25 | Internal combustion engine intake and exhaust valve drive device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP894684U JPS60122510U (en) | 1984-01-25 | 1984-01-25 | Internal combustion engine intake and exhaust valve drive device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS60122510U true JPS60122510U (en) | 1985-08-19 |
Family
ID=30488696
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP894684U Pending JPS60122510U (en) | 1984-01-25 | 1984-01-25 | Internal combustion engine intake and exhaust valve drive device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60122510U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013194741A (en) * | 2012-03-20 | 2013-09-30 | Man Diesel & Turbo Se | Valve drive for gas exchange valve in internal combustion engine |
| JP2014234769A (en) * | 2013-06-03 | 2014-12-15 | 株式会社デンソー | Electronic control device |
-
1984
- 1984-01-25 JP JP894684U patent/JPS60122510U/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013194741A (en) * | 2012-03-20 | 2013-09-30 | Man Diesel & Turbo Se | Valve drive for gas exchange valve in internal combustion engine |
| KR20130106783A (en) * | 2012-03-20 | 2013-09-30 | 만 디젤 앤 터보 에스이 | Valve train for gas exchange valve of internal combustion engine |
| JP2014234769A (en) * | 2013-06-03 | 2014-12-15 | 株式会社デンソー | Electronic control device |
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