JPS6157113U - - Google Patents
Info
- Publication number
- JPS6157113U JPS6157113U JP14256884U JP14256884U JPS6157113U JP S6157113 U JPS6157113 U JP S6157113U JP 14256884 U JP14256884 U JP 14256884U JP 14256884 U JP14256884 U JP 14256884U JP S6157113 U JPS6157113 U JP S6157113U
- Authority
- JP
- Japan
- Prior art keywords
- stroke side
- cam
- compression stroke
- intake
- exhaust
- 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.)
- Granted
Links
- 230000006835 compression Effects 0.000 claims description 10
- 238000007906 compression Methods 0.000 claims description 10
- 238000004880 explosion Methods 0.000 claims description 9
- 238000002485 combustion reaction Methods 0.000 claims description 3
- 230000006837 decompression Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 5
Landscapes
- Valve Device For Special Equipments (AREA)
- Output Control And Ontrol Of Special Type Engine (AREA)
Description
第１図乃至第１０図は本考案の一実施例に係り
、第１図はカムギヤ端面部分の図、第２図は第１
図のＡ−Ａ線断面図、第３図は第１図のＢ−Ｂ線
断面図、第４図は圧縮行程側リリースレバーの斜
視図、第５図は爆発行程側リリースレバーの斜視
図、第６図はクランク角度に対するカムリフトを
示す図、第７図は圧縮行程におけるピストン位置
燃焼室容積を示す説明図、第８図および第９図は
第２図のＣ−Ｃ線断面図で第８図はエンジン始動
時の動作説明図、第９図はエンジンの通常回転時
の動作説明図、第１０図は第１図の上面図、第１
１図は本考案の第二実施例に係り第１図と同様の
上面図、第１２図は従来例に係るエンジンのクラ
ンク角度に対するカムリフトを示す図である。
１…カムシヤフト、２，３…吸気弁用および排
気弁用タペツト、４，５…吸気および排気カム、
６…カムギヤ、８，９…圧縮行程側および爆発行
程側ピン孔、１０，１１…圧縮行程側および爆発
行程側リリースレバー、３１，３２…圧縮行程側
および爆発行程側リリースレバー。
1 to 10 relate to one embodiment of the present invention, in which FIG. 1 is a view of the end face of the cam gear, and FIG. 2 is a view of the end face of the cam gear.
3 is a sectional view taken along line BB in FIG. 1, FIG. 4 is a perspective view of the release lever on the compression stroke side, and FIG. 5 is a perspective view of the release lever on the explosion stroke side. Fig. 6 is a diagram showing the cam lift with respect to the crank angle, Fig. 7 is an explanatory diagram showing the piston position and combustion chamber volume during the compression stroke, and Figs. Figure 9 is an explanatory diagram of the operation when the engine starts, Figure 9 is an explanatory diagram of the operation during normal engine rotation, Figure 10 is a top view of Figure 1,
FIG. 1 is a top view similar to FIG. 1 according to a second embodiment of the present invention, and FIG. 12 is a diagram showing the cam lift with respect to the crank angle of an engine according to a conventional example. 1... Camshaft, 2, 3... Tappet for intake valves and exhaust valves, 4, 5... Intake and exhaust cams,
6... Cam gear, 8, 9... Compression stroke side and explosion stroke side pin holes, 10, 11... Compression stroke side and explosion stroke side release levers, 31, 32... Compression stroke side and explosion stroke side release levers.
Claims (1)
受けるカムシヤフトの回転で該カムシヤフトに設
けた吸気カム、排気カムによりタペツトを動作し
て燃焼室に対する吸気弁、排気弁の開閉を行わせ
るものにおいて、前記カムギヤ端面にカムシヤフ
トの軸芯に沿つた圧縮行程側および爆発行程側ピ
ン孔を形成し、前記ピン孔にそれぞれ片側にフラ
イウエイトを設けた圧縮行程側および爆発行程側
リリースレバーを回動自在に嵌挿するとともに、
前記反フライウエイト側の圧縮行程側および爆発
行程側リリースレバー端部を吸気カム側または排
気カム側あるいは吸気カムおよび排気カム側に延
出し、前記圧縮行程側および爆発行程側リリース
レバー端部のそれぞれのタペツト端部に対峙する
部分に切欠部を設けて、該圧縮行程側および爆発
行程側リリースレバーの回動により吸気カム面ま
たは排気カム面、あるいは吸気カム面および排気
カム面から突没するようにし、前記各リリースレ
バー端部の前記カム面からの突出により燃焼室を
半圧縮状態にし、没入により全圧縮状態になるよ
う構成したことを特徴とするエンジンのデコンプ
装置。 The end face of the cam gear in which the intake cam and exhaust cam provided on the camshaft operate tappets to open and close the intake valve and the exhaust valve with respect to the combustion chamber by the rotation of the camshaft which receives rotational force from the crankshaft through the cam gear. Compression stroke side and explosion stroke side pin holes are formed along the axis of the camshaft, and compression stroke side and explosion stroke side release levers each having a flyweight on one side are rotatably fitted into the pin holes. With,
The compression stroke side and explosion stroke side release lever ends on the opposite flyweight side extend to the intake cam side, the exhaust cam side, or the intake cam and exhaust cam sides, and the compression stroke side and explosion stroke side release lever ends, respectively, A notch is provided in a portion facing the end of the tappet, so that the release lever protrudes from the intake cam surface, the exhaust cam surface, or the intake cam surface and the exhaust cam surface when the compression stroke side and explosion stroke side release levers are rotated. A decompression device for an engine, characterized in that the combustion chamber is brought into a semi-compressed state by protruding from the cam surface of each of the release lever ends, and brought into a fully compressed state by being retracted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1984142568U JPH0311365Y2 (en) | 1984-09-20 | 1984-09-20 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1984142568U JPH0311365Y2 (en) | 1984-09-20 | 1984-09-20 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6157113U true JPS6157113U (en) | 1986-04-17 |
| JPH0311365Y2 JPH0311365Y2 (en) | 1991-03-19 |
Family
ID=30700885
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1984142568U Expired JPH0311365Y2 (en) | 1984-09-20 | 1984-09-20 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0311365Y2 (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5095630A (en) * | 1973-12-25 | 1975-07-30 |
-
1984
- 1984-09-20 JP JP1984142568U patent/JPH0311365Y2/ja not_active Expired
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5095630A (en) * | 1973-12-25 | 1975-07-30 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0311365Y2 (en) | 1991-03-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPS6157113U (en) | ||
| JPS6165213U (en) | ||
| JPS6182009U (en) | ||
| JPS6157112U (en) | ||
| JPH0717769Y2 (en) | Automatic engine decompression device | |
| JPH0144724Y2 (en) | ||
| JPH0292048U (en) | ||
| JPH0717770Y2 (en) | Automatic engine decompression device | |
| JPS61140106U (en) | ||
| JPH02139306U (en) | ||
| JPS60125304U (en) | Variable opening/closing timing device for intake and exhaust valves in 4-stroke engines | |
| JPS60190912U (en) | engine decompression device | |
| JPH01144408U (en) | ||
| JPS5859911U (en) | Pressure reducing device for starting four-stroke engines | |
| JPS6097308U (en) | engine decompression device | |
| JPS5943603U (en) | Automatic starting load reduction device for internal combustion engines | |
| JPS61140107U (en) | ||
| JPH0197005U (en) | ||
| JPH01144411U (en) | ||
| JPS6112913U (en) | engine decompression device | |
| JPS60190911U (en) | engine decompression device | |
| JPS61118905U (en) | ||
| JPS616612U (en) | engine decompression device | |
| JPS616613U (en) | engine decompression device | |
| JPS61145811U (en) |