JPH01290905A - Decompressor device for four-cycle engine - Google Patents
Decompressor device for four-cycle engineInfo
- Publication number
- JPH01290905A JPH01290905A JP12063388A JP12063388A JPH01290905A JP H01290905 A JPH01290905 A JP H01290905A JP 12063388 A JP12063388 A JP 12063388A JP 12063388 A JP12063388 A JP 12063388A JP H01290905 A JPH01290905 A JP H01290905A
- Authority
- JP
- Japan
- Prior art keywords
- lever
- electromagnetic solenoid
- decompression
- decompression cam
- cam
- 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
- 230000006837 decompression Effects 0.000 claims description 23
- 230000003111 delayed effect Effects 0.000 claims description 2
- 230000004913 activation Effects 0.000 description 1
- 230000008485 antagonism Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
Landscapes
- Valve Device For Special Equipments (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は、二組のデコンプ装置を一つの電磁ソレノイ
ドで作動させてデコンプを行うもので、ｆｆ１ｌｌｌｉ
＆ソレノイドを小型化できるようにした四サイクルエン
ジンのデコンプ装冒に関する。[Detailed Description of the Invention] [Field of Industrial Application] This invention performs decompression by operating two sets of decompression devices with one electromagnetic solenoid.
& Concerning decompression equipment for four-stroke engines that made it possible to downsize the solenoid.
四サイクルエンジンでは、始動時の初期にＪＪＩ気弁を
問いてデコンプさせ、軽くクランキングができるように
している。排気弁をデ］ンプさＵるには、手動のものと
電磁ソレノイドで作動させるものがあり、電磁ソレノイ
ドを用いるものは、自（ｒＪ＋にできて、操作の手間が
省ける。しかし、電磁ソレノイドで、？Ｑ数の排気弁を
同時にデ〕ンブざＵる場合には、大型の電磁ソレノイド
で、吸引力が大きいものを使用しなければならず、製）
Δコストが高くつくだけでなく、重量が重くつき、消費
電力も多くなって大きいバラブリーを塔載する必要があ
るなどの不都合がある。例えば、実開昭５９−１８１２
号公電、実開昭６２−１３５８０６号公報参照。In a four-stroke engine, the JJI valve is activated to decompress the engine at the initial stage of startup, allowing for light cranking. There are two ways to depress the exhaust valve: one is manual and the other is operated by an electromagnetic solenoid. , ?Q number of exhaust valves at the same time, a large electromagnetic solenoid with a large suction force must be used.
Δ Not only is the cost high, but it is also heavy, consumes a lot of power, and has the disadvantages of having to mount a large valve. For example, Utsukai 59-1812
See Public Telegraph No. 62-135806.
この発明は、複数のデコンプカムのレバーを一つの電磁
ソレノイドに連結し′Ｃ竹動させるもので、一つのデコ
ンプカムのレバーのレバー比を変えると共に、作動時期
を少し遅延させることによって、作動に必要な吸引力を
低減し、電磁ソレノイドを小型化できる四サイクルエン
ジンのデ」ンブ装置を得ることを目的とする。In this invention, the levers of a plurality of decompression cams are connected to one electromagnetic solenoid and moved by a single electromagnetic solenoid, and by changing the lever ratio of the lever of one decompression cam and slightly delaying the activation timing, The purpose of the present invention is to obtain a four-cycle engine debossing device that can reduce the suction force and downsize the electromagnetic solenoid.
以下、本発明を図面に示す実施例によって説明する。 Hereinafter, the present invention will be explained with reference to embodiments shown in the drawings.
図はシリンダー１がｍ（Ｉに並んだ■型エンジンの場合
を示しでいる。前側Ｆと１ｆｌｌｌｌＲのシリンダーヘ
ッド２には、各々吸気弁３及び排気弁４が設（ｊてあり
、運転中は、クランクシャフトに連動１゛るカムシャフ
ト５の回転でカムによってロッカロアームロ、７を揺動
させ、吸気弁３と排気弁４を各々バネに抗して押下げて
開くようになっている。The figure shows the case of a ■ type engine in which the cylinders 1 are lined up in m (I).The front F and 1fllllR cylinder heads 2 are each equipped with an intake valve 3 and an exhaust valve 4 (j). As the camshaft 5 rotates in conjunction with the crankshaft, the cam swings the rocker lower arm 7, and the intake valve 3 and the exhaust valve 4 are pushed down against springs and opened.
前後の排気弁４を押下げる（」ツカ−アーム７の上側に
は、回動可能にデコンプカム８を近接さ１！て設りてあ
り、デコンプカム８の端には、レバー９が各々連結しで
ある。前側Ｆのレバー９は、ボーデンワイヤ１０で、電
磁ソレノイド１１の可動片１２に連結しである。又、前
側［のレバー９と１艷１１［１１Ｒのレバー９をボーデ
ンワイＡ７１３で連結しである。後側Ｒのレバー９の長
さは、前側［−のレバー９の長さより短くしであって、
少量の引張りで回動でさるようにしである。又、ボーデ
ンワイヤ１３と前側Ｆのレバー９は、レバー９に長孔１
４が設けであって、遊びがあるようにし′Ｃある。Push down the front and rear exhaust valves 4 (1) A rotatable decompression cam 8 is provided close to the upper side of the lever arm 7, and a lever 9 is connected to each end of the decompression cam 8. The lever 9 on the front side F is connected to the movable piece 12 of the electromagnetic solenoid 11 with a Bowden wire 10. Also, the lever 9 on the front side [1] and the lever 9 on the 11 [11R] are connected with a Bowden wire A713. The length of the lever 9 on the rear side R is shorter than the length of the lever 9 on the front side [-],
It can be rotated with a small amount of tension. In addition, the Bowden wire 13 and the lever 9 on the front side F have a long hole 1 in the lever 9.
4 is provided so that there is some play.
（発明の作用〕
電磁ソレノイド１１に通電すると可動片１２がＷｌａで
吸引され、ボーデンワイヤ１０を引いて、前側Ｆのレバ
ー９を回動させて、前側「のデ」ンブカム８を回動させ
、前側「の１］ツカ−アーム７を・回動して前側Ｆの排
気弁４を押下げてデーＪンブさせる。前側「のレバー９
の回動が進んで、長孔１４の遊び範囲がなくなると、ボ
ーデンヮイ−７１３が引かれて、後側Ｒのレバー９も回
動し、ＩＹｉ側「と同様に、後側Ｒの拮気弁４が開いで
デコンプされる。第４図は、デ〕ンブの作動に要するる
４重と電磁ソレノイド１１の吸引力Ｐを示すものである
。電磁ソレノイド１１の吸引力Ｐは、可動片１２が電磁
ソレノイド１１に近づくにつれて、即らストロークがＯ
になるにつれて大きくなる。前後のデコンプを同時に行
うには、Ｆ’ ＋Ｒ’の荷重を上廻る吸引力Ｐ′が必要
である。しかし、前側Ｆのレバー９の長さを長くし、後
側Ｒのレバー９の作動を遅延させることによって、デコ
ンプに殻する荷重は、Ｆ＋Ｒｋ−なる。これを上廻る電
磁ソレノイド１１の吸引力はＰで示すように設定すれば
足り、？１ｔ 磁ソレノイド１１の吸◇１力Ｐを小ざく
できて、電磁ソレノイド１１を小型で軽量で安価にでき
る。(Operation of the invention) When the electromagnetic solenoid 11 is energized, the movable piece 12 is attracted by Wla, the Bowden wire 10 is pulled, the lever 9 on the front side F is rotated, and the front side "de" cam 8 is rotated. Rotate the front lever arm 7 to push down the front F exhaust valve 4. Turn the front lever 9.
As the rotation progresses and the play range of the elongated hole 14 disappears, Bowden Wire 713 is pulled, and the lever 9 on the rear R also rotates, and in the same way as on the IYi side, the antagonism valve on the rear R 4 is opened and decompressed. Figure 4 shows the four folds required to operate the valve and the attraction force P of the electromagnetic solenoid 11. As it approaches the electromagnetic solenoid 11, the stroke becomes O.
It gets bigger as it gets older. In order to perform front and rear decompression simultaneously, a suction force P' exceeding the load F' + R' is required. However, by increasing the length of the lever 9 on the front side F and delaying the operation of the lever 9 on the rear side R, the load applied to the decompression becomes F+Rk-. Is it sufficient to set the attraction force of the electromagnetic solenoid 11 as shown by P to exceed this? 1t The suction force P of the magnetic solenoid 11 can be reduced, and the electromagnetic solenoid 11 can be made small, lightweight, and inexpensive.
以上説明したように、この発明は、二組の排気弁を押下
げて開くロッカーアームにデコンプカムを近接して設け
、該デ〕ンブカムを回動させてロッカーアームを押下げ
て排気弁を聞いてデコンプさせるものに於て、一方のデ
コンプカムのレバーに電磁ソレノイドを連結し、一方の
デコンプカムのレバーに他方のデコンプカムのレバーを
連動させ、他方のレバー長さを変えると共に、始動時期
を遅延させるようにしたので、１１ソレノ、イドの吸引
力が小さいものを使用できるようになり、電磁ソレノイ
ドの小型軽ｒ３化ができ、コストダウンを図ることがで
きる。又、電磁ソレノイドの吸引力が小さくなるので、
連結するボーデンワイＡ７のサイズダウンもできる。As explained above, the present invention provides a decompression cam close to a rocker arm that opens by pushing down two sets of exhaust valves, and rotates the decompression cam to push down the rocker arm to open the exhaust valve. In devices that decompress, an electromagnetic solenoid is connected to the lever of one decompression cam, the lever of one decompression cam is linked to the lever of the other decompression cam, and the length of the other lever is changed and the start time is delayed. As a result, it is now possible to use solenoids and id having a small suction force, and the electromagnetic solenoid can be made smaller and lighter, reducing costs. Also, since the attraction force of the electromagnetic solenoid becomes smaller,
It is also possible to reduce the size of the connected Bowden Y A7.
第１図乃至第３図は本発明の一実施例を丞し、第１図は
ｗ１１側面図、
第２図はデコンプ力ムレバ一部の外側面図、第３図は第
２図Ａ−△矢視断面図、
第４図はデコンプの作動荷重と電磁ソレノイドの吸引力
の関係を示１′グラフである。
４・・・ＩＪＩ気弁、７・・・ロッカーアーム、８・・
・デ〕ンプカ１１．９・・・レバー、１１・・・？Ｈ１
ソレノイド。Figures 1 to 3 show one embodiment of the present invention, Figure 1 is a side view of w11, Figure 2 is an external side view of a part of the decompression force lever, and Figure 3 is Figure 2A-△. 4 is a 1' graph showing the relationship between the operating load of the decompressor and the suction force of the electromagnetic solenoid. 4...IJI valve, 7...Rocker arm, 8...
・De]Pumper 11.9...Lever, 11...? H1
solenoid.
Claims (1)
カムを近接して設け、該デコンプカムを回動させてロッ
カーアームを押下げて排気弁を開いてデコンプさせるも
のに於て、一方のデコンプカムのレバーに電磁ソレノイ
ドを連結し、一方のデコンプカムのレバーに他方のデコ
ンプカムのレバーを連動させ、他方のレバー長さを変え
ると共に、始動時期を遅延させるようにしたことを特徴
とする四サイクルエンジンのデコンプ装置。In a system in which a decompression cam is provided close to a rocker arm that opens by pushing down two sets of exhaust valves, and the decompression cam is rotated to push down the rocker arm and open the exhaust valve to decompress, the lever of one decompression cam is A decompression device for a four-cycle engine, characterized in that an electromagnetic solenoid is connected to the decompression cam, the lever of one decompression cam is linked to the lever of the other decompression cam, and the length of the other decompression cam is changed and the start timing is delayed. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63120633A JP2717263B2 (en) | 1988-05-19 | 1988-05-19 | Decompression device for four-cycle engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63120633A JP2717263B2 (en) | 1988-05-19 | 1988-05-19 | Decompression device for four-cycle engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01290905A true JPH01290905A (en) | 1989-11-22 |
| JP2717263B2 JP2717263B2 (en) | 1998-02-18 |
Family
ID=14791053
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63120633A Expired - Lifetime JP2717263B2 (en) | 1988-05-19 | 1988-05-19 | Decompression device for four-cycle engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2717263B2 (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57132007U (en) * | 1981-02-12 | 1982-08-17 | ||
| JPS6324316U (en) * | 1986-07-31 | 1988-02-17 |
-
1988
- 1988-05-19 JP JP63120633A patent/JP2717263B2/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57132007U (en) * | 1981-02-12 | 1982-08-17 | ||
| JPS6324316U (en) * | 1986-07-31 | 1988-02-17 |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2717263B2 (en) | 1998-02-18 |
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