JPH0363705U - - Google Patents
Info
- Publication number
- JPH0363705U JPH0363705U JP12316689U JP12316689U JPH0363705U JP H0363705 U JPH0363705 U JP H0363705U JP 12316689 U JP12316689 U JP 12316689U JP 12316689 U JP12316689 U JP 12316689U JP H0363705 U JPH0363705 U JP H0363705U
- Authority
- JP
- Japan
- Prior art keywords
- cam
- follower
- drive device
- cams
- valve drive
- 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
- 125000006850 spacer group Chemical group 0.000 claims description 4
Description
第１図ａ，ｂは共に本考案の一実施例にかかる
エンジンの可変バルブ駆動装置の一部破断側面図
、第２図はその一部破断正面図、第３図は低速型
カムと高速型カムのカムリフトを表わすグラフ、
第４図及び第５図はそれぞれ切換装置の例を表わ
す断面図、第６図は本考案の他の実施例にかかる
エンジンの可変バルブ駆動装置の一部破断側面図
である。
図面中、１１……バルブ、１３……タペツト、
１４……カム軸、１５……低速型カム、１６……
高速型カム、１７……スペーサ、２０，２５……
切換装置、３０……停止型カム、３１……低・高
速兼用型カムである。
1a and 1b are both partially cutaway side views of a variable valve drive device for an engine according to an embodiment of the present invention, FIG. 2 is a partially cutaway front view thereof, and FIG. 3 is a low-speed type cam and a high-speed type cam. A graph showing the cam lift of the cam,
4 and 5 are sectional views showing examples of the switching device, respectively, and FIG. 6 is a partially cutaway side view of a variable valve driving device for an engine according to another embodiment of the present invention. In the drawings, 11... valve, 13... tappet,
14...Cam shaft, 15...Low speed cam, 16...
High-speed cam, 17... Spacer, 20, 25...
Switching device, 30...Stop type cam, 31...Low/high speed combined type cam.
Claims (1)
ワを駆動することでバルブの開閉を行うエンジン
のバルブ駆動装置において、１の前記フオロワに
対向して前記カム軸に軸方向に並設された互いに
プロフイールの異なる複数のカムと、前記軸方向
に沿つて移動可能に支持されると共に前記フオロ
ワと前記複数のカムのうちの１つとの間に介在し
て該カムによつて該フオロワを駆動させるスペー
サと、前記スペーサを前記軸方向に移動位置決め
して該スペーサが係合する前記カムを変更する切
換装置とを具えたことを特徴とするエンジンの可
変バルブ駆動装置。 (2) 前記複数のカムには、低速運転に適したバ
ルブ運動を与えるプロフイールを有する低速型カ
ムと、高速運転に適したバルブ運動を与えるプロ
フイールを有する高速型カムとが含まれることを
特徴とする請求項(1)記載のエンジンの可変バル
ブ駆動装置。 (3) 前記複数のカムには、バルブの開閉を行わ
ない円形プロフイールを有する停止型カムが含ま
れることを特徴とする請求項(1)記載のエンジン
の可変バルブ駆動装置。[Claims for Utility Model Registration] (1) In an engine valve drive device in which a cam provided on a rotating camshaft drives a follower to open and close a valve, the camshaft is positioned opposite to the follower of 1. a plurality of cams having different profiles from each other and arranged in parallel in the axial direction; a cam supported movably along the axial direction and interposed between the follower and one of the plurality of cams; A variable valve drive device for an engine, comprising: a spacer that drives the follower according to the method; and a switching device that moves and positions the spacer in the axial direction and changes the cam with which the spacer engages. . (2) The plurality of cams include a low-speed cam having a profile that provides valve movement suitable for low-speed operation, and a high-speed cam having a profile that provides valve movement suitable for high-speed operation. The variable valve drive device for an engine according to claim (1). (3) The variable valve drive device for an engine according to claim (1), wherein the plurality of cams include a stop-type cam having a circular profile that does not open or close a valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12316689U JPH0363705U (en) | 1989-10-23 | 1989-10-23 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12316689U JPH0363705U (en) | 1989-10-23 | 1989-10-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0363705U true JPH0363705U (en) | 1991-06-21 |
Family
ID=31671157
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12316689U Pending JPH0363705U (en) | 1989-10-23 | 1989-10-23 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0363705U (en) |
-
1989
- 1989-10-23 JP JP12316689U patent/JPH0363705U/ja active Pending
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