JPH0330507U - - Google Patents
Info
- Publication number
- JPH0330507U JPH0330507U JP9005589U JP9005589U JPH0330507U JP H0330507 U JPH0330507 U JP H0330507U JP 9005589 U JP9005589 U JP 9005589U JP 9005589 U JP9005589 U JP 9005589U JP H0330507 U JPH0330507 U JP H0330507U
- Authority
- JP
- Japan
- Prior art keywords
- cam
- piston
- rocker arm
- valve
- timing
- 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 2
- 230000008878 coupling Effects 0.000 claims 1
- 238000010168 coupling process Methods 0.000 claims 1
- 238000005859 coupling reaction Methods 0.000 claims 1
Landscapes
- Valve-Gear Or Valve Arrangements (AREA)
- Valve Device For Special Equipments (AREA)
- Output Control And Ontrol Of Special Type Engine (AREA)
Description
図面は本考案による内燃機関の弁作動時期切換
装置の一実施例を示すもので、第１図は一部を切
断して示した立面図、第２図は第１図の−線
に沿う断面図、第３図は同上装置の要部拡大断面
図、第４図ａ，ｂ，ｃ，ｄ，ｅは同上装置の要部
における作動状態をそれぞれ時間を変えて示した
断面図である。
１ａ，１ｂ……弁、２……カムシヤフト、３…
…低速用カム（第１のカム）、４……高速用カム
（第２のカム）、５……ロツカーシヤフト（支軸
）、５Ａ……タイミングカム面、６，７……第１
のロツカーアーム、８……第２のロツカーアーム
、６ｂ，７ｂ，８ｂ……ガイド孔、９……タイミ
ングピン、１３……弁ばね（ばね手段）、１５…
…連結機構、１６……第１のピストン、１７……
第２のピストン、１９……第３のピストン、２２
……係合溝、２５……スプリング（第２の付勢手
段）。
The drawings show an embodiment of the valve timing switching device for an internal combustion engine according to the present invention, and FIG. 1 is a partially cutaway elevational view, and FIG. 2 is a view taken along the line - in FIG. 1. 3 is an enlarged sectional view of the main part of the above device, and FIGS. 4a, b, c, d, and e are sectional views showing the operating state of the main part of the above device at different times. 1a, 1b...Valve, 2...Camshaft, 3...
...low-speed cam (first cam), 4... high-speed cam (second cam), 5... rocker shaft (spindle), 5A... timing cam surface, 6, 7... first
Rocker arm, 8... Second Rocker arm, 6b, 7b, 8b... Guide hole, 9... Timing pin, 13... Valve spring (spring means), 15...
...Connection mechanism, 16... First piston, 17...
Second piston, 19...Third piston, 22
. . . Engagement groove, 25 . . . Spring (second biasing means).
Claims (1)
の運転速度に応じて形状が設定された第１のカム
と第２のカムとを一体的に連設してなるカムシヤ
フトと、燃焼室の吸気ポートあるいは排気ポート
に設定されてばね手段により常時閉弁付勢されて
いるとともに前記カムにより開弁駆動される弁と
、前記カムに摺接し前記カムの揚程を前記弁に伝
達する第１のロツカーアーム部材と、前記第２の
カムに摺接し前記カムの揚程を前記弁に伝達する
第２のロツカーアーム部材と、前記第１、第２の
両ロツカーアーム部材間の連結・非連結を選択す
る連結機構を備えるとともに、前記連結機構を前
記第１、第２のロツカーアームに対応して設けら
れたガイド孔と、前記ガイド孔のいずれか一方側
に設けられて他方側のガイド孔に出没自在に摺動
するピストンと、前記ピストンに移動する力を付
与する第１の付勢手段と、前記第１、第２のロツ
カーアーム部材が回転自在に取り付けられる支軸
側に形成されたタイミングカムを有するカム手段
と、前記カム手段の制御で前記ピストンの移動通
路内に出没され前記ピストンの前記突き出しを規
制するタイミングピンと、常に前記タイミングピ
ンを前記カムに押圧付勢しておく第２の付勢手段
とで構成したことを特徴とする内燃機関の弁作動
時期切換装置。 A camshaft is formed by integrally connecting a first cam and a second cam that rotate in synchronization with the crankshaft and whose shape is set according to the operating speed of the engine; a first rocker arm member that is in sliding contact with the cam and transmits the lifting height of the cam to the valve; a second rocker arm member that slides on the second cam and transmits the lifting height of the cam to the valve; and a coupling mechanism that selects connection/disconnection between the first and second rocker arm members, and The mechanism includes a guide hole provided corresponding to the first and second rocker arms, a piston provided on one side of the guide hole and sliding freely in and out of the guide hole on the other side, and the piston. a cam means having a timing cam formed on a support shaft to which the first and second rocker arm members are rotatably attached; and control of the cam means. and a timing pin that is retracted and retracted into the movement path of the piston to restrict the protrusion of the piston, and a second urging means that always presses and urges the timing pin against the cam. Valve timing switching device for internal combustion engines.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9005589U JPH0330507U (en) | 1989-07-31 | 1989-07-31 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9005589U JPH0330507U (en) | 1989-07-31 | 1989-07-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0330507U true JPH0330507U (en) | 1991-03-26 |
Family
ID=31639599
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9005589U Pending JPH0330507U (en) | 1989-07-31 | 1989-07-31 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0330507U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010236374A (en) * | 2009-03-30 | 2010-10-21 | Toyota Motor Corp | Control device for internal combustion engine |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6131613A (en) * | 1984-07-24 | 1986-02-14 | Honda Motor Co Ltd | Internal combustion engine valve deactivation device |
| JPH0312481A (en) * | 1989-06-09 | 1991-01-21 | Canon Inc | Ferroelectric chiral smectic liquid crystal composition and liquid crystal element containing same |
-
1989
- 1989-07-31 JP JP9005589U patent/JPH0330507U/ja active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6131613A (en) * | 1984-07-24 | 1986-02-14 | Honda Motor Co Ltd | Internal combustion engine valve deactivation device |
| JPH0312481A (en) * | 1989-06-09 | 1991-01-21 | Canon Inc | Ferroelectric chiral smectic liquid crystal composition and liquid crystal element containing same |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010236374A (en) * | 2009-03-30 | 2010-10-21 | Toyota Motor Corp | Control device for internal combustion engine |
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