JPH0481049B2 - - Google Patents

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Publication number
JPH0481049B2
JPH0481049B2 JP60254174A JP25417485A JPH0481049B2 JP H0481049 B2 JPH0481049 B2 JP H0481049B2 JP 60254174 A JP60254174 A JP 60254174A JP 25417485 A JP25417485 A JP 25417485A JP H0481049 B2 JPH0481049 B2 JP H0481049B2
Authority
JP
Japan
Prior art keywords
hydraulic clutch
clutch
state
hydraulic
valve
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.)
Expired - Lifetime
Application number
JP60254174A
Other languages
Japanese (ja)
Other versions
JPS62113924A (en
Inventor
Naoya Tsuda
Shigeyuki Hayashi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kubota Corp
Original Assignee
Kubota Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Kubota Corp filed Critical Kubota Corp
Priority to JP60254174A priority Critical patent/JPS62113924A/en
Publication of JPS62113924A publication Critical patent/JPS62113924A/en
Publication of JPH0481049B2 publication Critical patent/JPH0481049B2/ja
Granted legal-status Critical Current

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  • Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)

Description

【発明の詳細な説明】 (産業上の利用分野) 本発明は、電磁弁により制御される油圧クラツ
チにおいて、半クラツチ状態を得ることができる
制御油圧回路を提供することを目的とする。
DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The object of the present invention is to provide a control hydraulic circuit that can obtain a half-clutch state in a hydraulic clutch controlled by a solenoid valve.

(従来の技術) 油圧クラツチと、該油圧クラツチに圧油を供給
するポンプと、ポンプから油圧クラツチへの油の
供給油路を開閉する電磁弁とを備えた油圧クラツ
チの制御油圧回路は従来周知である。
(Prior Art) A hydraulic circuit for controlling a hydraulic clutch, which includes a hydraulic clutch, a pump for supplying pressure oil to the hydraulic clutch, and an electromagnetic valve for opening and closing an oil supply path from the pump to the hydraulic clutch, is well known in the art. It is.

(発明が解決しようとする問題点) 上記従来のものでは、油圧クラツチを「入」又
は「切」の二状態にしかできないため、油クラツ
チの従動側に大きな負荷を受ける機器を接続する
場合、「入」状態にすると大きな衝撃を受けて好
ましくないものであつた。
(Problems to be Solved by the Invention) In the above-mentioned conventional hydraulic clutch, the hydraulic clutch can only be placed in two states, ``on'' and ``off.'' Therefore, when connecting a device that receives a large load to the driven side of the oil clutch, When it was turned on, it received a large shock, which was undesirable.

本発明は上記に鑑み、油圧クラツチを半クラツ
チ状態とできる制御油圧回路を提供することによ
り、上記問題点を解決することを目的とする。
SUMMARY OF THE INVENTION In view of the above, an object of the present invention is to solve the above problems by providing a hydraulic control circuit that can bring a hydraulic clutch into a half-clutch state.

(問題点を解決するための手段) 本発明が、従来技術の問題点を解決するために
講じる技術的手段の特徴とするところは、油圧ク
ラツチ1と、該油圧クラツチ1に圧油を供給する
ポンプ2と、ポンプ2から油圧クラツチ1への油
の供給油路を開閉する第一電磁弁S1と、この第
一電磁弁S1を切換え操作する操作レバー5と、
油圧クラツチ1が半クラツチ状態での油圧をリリ
ーフ圧とするリリーフ弁3とを備えた油圧クラツ
チの制御回路において、 前記リリーフ弁3に通じるリリーフ油の油路を
開閉自在でかつ操作レバー5によつて切換え可能
な第二電磁弁S2を設け、前記操作レバー5を、
両電磁弁S1,S2が閉状態となり、両電磁弁S
1,S2が開状態となり、第1電磁弁S1が開状
態で第二電磁弁S2が閉状態となる3位置に有段
的に切換え可能にしている。
(Means for Solving the Problems) The technical measures taken by the present invention to solve the problems of the prior art are characterized by the hydraulic clutch 1 and the supply of pressure oil to the hydraulic clutch 1. A pump 2, a first solenoid valve S1 that opens and closes the oil supply path from the pump 2 to the hydraulic clutch 1, and an operating lever 5 that switches and operates the first solenoid valve S1.
In a control circuit for a hydraulic clutch, the hydraulic clutch 1 is equipped with a relief valve 3 that uses the hydraulic pressure when the clutch is in a half-clutch state as a relief pressure. A second solenoid valve S2 is provided, which can be switched with the operation lever 5,
Both solenoid valves S1 and S2 are closed, and both solenoid valves S1 and S2 are closed.
1 and S2 are in the open state, the first solenoid valve S1 is in the open state, and the second solenoid valve S2 is in the closed state.

(作用) 第一電磁弁S1が開状態で、第二電磁弁S2も
開状態とする。すると、油圧クラツチ1が半クラ
ツチ状態となると、リリーフ弁3が作動し、リリ
ーフ油の油路も開かれているため、油圧はリリー
フ圧を維持され、油圧クラツチ1は半クラツチ状
態を維持できる。
(Operation) When the first solenoid valve S1 is in an open state, the second solenoid valve S2 is also in an open state. Then, when the hydraulic clutch 1 becomes a half-clutched state, the relief valve 3 is activated and the oil passage for the relief oil is also opened, so that the oil pressure is maintained at the relief pressure, and the hydraulic clutch 1 can be maintained in the half-clutched state.

第一電磁弁S1が開状態で、第二電磁弁S2を
閉状態とする。すると、油圧クラツチ1が半クラ
ツチ状態になつても、リリーフ油の油路が第二電
磁弁S2により閉じられているため、油圧はリリ
ーフ圧よりも上昇し、油圧クラツチ1は「入」状
態となる。
The first solenoid valve S1 is in an open state, and the second solenoid valve S2 is in a closed state. Then, even if the hydraulic clutch 1 is in the half-clutch state, the oil pressure increases above the relief pressure because the relief oil passage is closed by the second solenoid valve S2, and the hydraulic clutch 1 is in the "on" state. Become.

第一電磁弁S1を閉じると、油圧クラツチ1は
「切」状態となる。そして、これら3状態は、1
本の操作レバー5を3位置に有段的に移動するだ
けで切換えることが可能であり、半クラツチ状態
が確実に得られる。
When the first solenoid valve S1 is closed, the hydraulic clutch 1 is in the "off" state. And these three states are 1
Switching can be done simply by moving the book operating lever 5 stepwise to three positions, and a half-clutched state can be reliably obtained.

(実施例) 以下、本発明の実施例を図面に基づき説明す
る。
(Example) Hereinafter, an example of the present invention will be described based on the drawings.

第1図乃至第3図は、油圧クラツチの一例とし
て、農用トラクタのPTO軸への動力の断続を、
トラクタ走行系への動力の断続とは別個に行なう
油圧クラツチ1の、制御油圧回路を示す。
Figures 1 to 3 show an example of a hydraulic clutch that connects and disconnects power to the PTO shaft of an agricultural tractor.
1 shows a hydraulic control circuit for a hydraulic clutch 1 which is operated separately from the connection and connection of power to the tractor traveling system.

2はポンプで油圧クラツチ1に圧油を供給する
ものである。
A pump 2 supplies pressure oil to the hydraulic clutch 1.

S1は第一電磁弁で、ポンプ2から油圧クラツ
チ1への圧油の供給油路を開閉するものである。
3はリリーフ弁であり、ポンプ2と第一電磁弁S
1とをつなぐ油路途中から分岐されたリリーフ油
の油路に設けられている。このリリーフ弁3のリ
リーフ圧は、油圧クラツチ1が半クラツチ状態で
の油圧に設定されており、本実施例では4Kg/cm2
とされている。
S1 is a first electromagnetic valve that opens and closes a pressure oil supply path from the pump 2 to the hydraulic clutch 1.
3 is a relief valve, which connects the pump 2 and the first solenoid valve S.
It is provided in a relief oil oil path that branches off from the middle of the oil path that connects 1. The relief pressure of the relief valve 3 is set to the hydraulic pressure when the hydraulic clutch 1 is in a half-clutch state, and in this embodiment, the relief pressure is 4 kg/cm 2
It is said that

S2は第二電磁弁で、上記リリーフ弁3の出口
側のリリーフ油の油路を開閉するものである。
S2 is a second electromagnetic valve that opens and closes the relief oil passage on the outlet side of the relief valve 3.

4は回路保護用リリーフ弁であり、上記リリー
フ弁3の出口側の油路から分岐された油路に設け
られ、この保護用リリーフ弁4のリリーフ圧は、
油圧クラツチ1が「入」状態の油圧よりも高く、
かつ回路を保護しうる圧力に設定され、本実施例
では15Kg/cm2とされている。
Reference numeral 4 denotes a circuit protection relief valve, which is provided in an oil passage branched from the oil passage on the outlet side of the relief valve 3, and the relief pressure of this protection relief valve 4 is as follows:
The hydraulic pressure is higher than the hydraulic pressure when the hydraulic clutch 1 is in the “on” state,
The pressure is set at a pressure that can protect the circuit, and in this example, it is set at 15 kg/cm 2 .

5は操作レバーであつて、トラクタのオペレー
タによつて操作可能な位置に、揺動自在に取付け
られるものである。その揺動される操作レバー5
の基端により、前記第一・第二電磁弁S1,S2
の操作スイツチ6の入・切がなされる。ここで、
操作スイツチ6は、「入」状態において各電磁弁
S1,S2を開状態とし、「切」状態において閉
状態とするものであり、第一電磁弁S1が開状態
で、第二電磁弁S2を開・閉どちらの状態にもで
きるスイツチ構成とされている。
Reference numeral 5 denotes an operating lever, which is swingably mounted at a position where it can be operated by the operator of the tractor. The operating lever 5 that swings
The base ends of the first and second solenoid valves S1, S2
The operation switch 6 is turned on and off. here,
The operation switch 6 opens each solenoid valve S1, S2 when in the "on" state, and closes it when in the "off" state, and when the first solenoid valve S1 is open, the second solenoid valve S2 is opened. It has a switch configuration that can be opened or closed.

上記構成において、操作レバー5を揺動させ第
1図示のように、両電磁弁S1,S2で油路を閉
じ状態とする。すると、油圧クラツチ1には圧油
が供給されず、油圧クラツチ1は「切」状態とな
る。
In the above configuration, the operating lever 5 is swung to close the oil passage with both the electromagnetic valves S1 and S2, as shown in the first diagram. Then, no pressure oil is supplied to the hydraulic clutch 1, and the hydraulic clutch 1 is in the "disengaged" state.

次に、操作レバー5を揺動させ、第2図示のよ
うに、第一・第二電磁弁S1,S2を開状態とす
る。すると、ポンプ2からの圧油は油圧クラツチ
1に供給され、油圧クラツチ1が半クラツチ状態
となると、リリーフ弁3が作動し、このリリーフ
弁3に通じる油路も開かれているため、油圧クラ
ツチ1は半クラツチ状態を維持できる。
Next, the operating lever 5 is swung to open the first and second solenoid valves S1 and S2 as shown in the second diagram. Then, the pressure oil from the pump 2 is supplied to the hydraulic clutch 1, and when the hydraulic clutch 1 becomes half-clutched, the relief valve 3 is activated, and since the oil passage leading to the relief valve 3 is also opened, the hydraulic clutch 1 is closed. 1 can maintain a half-clutch state.

次に、操作レバー5を揺動させ、第3図示のよ
うに、第一電磁弁S1を開き、第二電磁弁S2を
閉じると、ポンプ2からの圧油は油圧クラツチ1
に供給される。そして、半クラツチ状態の圧力と
なると、リリーフ弁3は作動するが、このリリー
フ弁3に通じる油路は第二電磁弁S2により閉じ
られているため、油圧はリリーフ圧よりも上昇
し、クラツチ1は「入」状態となる。なお、保護
用リリーフ弁4のリリーフ圧は、クラツチ1を
「入」状態にする油圧よりも高く設定されている
ため、油圧が異常に高くならない限り作動せず、
上記リリーフ弁3に通じる油路を閉じた状態とし
ている。
Next, when the operating lever 5 is swung to open the first solenoid valve S1 and close the second solenoid valve S2 as shown in the third diagram, the pressure oil from the pump 2 is transferred to the hydraulic clutch 1.
is supplied to When the pressure reaches a half-clutch state, the relief valve 3 operates, but since the oil passage leading to the relief valve 3 is closed by the second solenoid valve S2, the oil pressure rises higher than the relief pressure, and the clutch 1 is in the "on" state. Note that the relief pressure of the protective relief valve 4 is set higher than the oil pressure that turns the clutch 1 into the "on" state, so it will not operate unless the oil pressure becomes abnormally high.
The oil passage leading to the relief valve 3 is closed.

上記油圧クラツチ1の制御油圧回路によれば、
トラクタのPTO軸に接続される農用作業機が、
油圧クラツチ1の従動側に大きな衝撃を与えるも
のであつても、まず、第2図示のように油圧クラ
ツチ1を半クラツチ状態とすれば、その衝撃を吸
収でき、しかる後に第3図示のように油圧クラツ
チ1を「入」状態とすればよい。また、油圧クラ
ツチ1を「切」状態と半クラツチ状態とに交互に
なるようレバー5を揺動操作することで、いわゆ
るインチング動作を大きな衝撃を受けることなく
行なえるものである。
According to the control hydraulic circuit of the hydraulic clutch 1,
An agricultural machine connected to the tractor's PTO shaft is
Even if a large impact is applied to the driven side of the hydraulic clutch 1, the impact can be absorbed by first placing the hydraulic clutch 1 in a half-clutch state as shown in the second figure, and then as shown in the third figure. The hydraulic clutch 1 may be brought into the "on" state. Furthermore, by swinging the lever 5 so that the hydraulic clutch 1 is alternately placed in the "disengaged" state and the half-clutched state, a so-called inching operation can be performed without receiving a large impact.

第4図は上記実施例とは異なつた実施例に係
り、第二電磁弁S1はリリーフ弁3の入口側のリ
リーフ油の油路を開閉するように設けられ、保護
用リリーフ弁4は、上記リリーフ弁3とは別のリ
リーフ油の管路が分岐されてその途中に設けられ
ている。その他の構成は上記実施例と同様で、同
一符号で示す。
FIG. 4 relates to an embodiment different from the above-described embodiment, in which the second solenoid valve S1 is provided to open and close the relief oil oil passage on the inlet side of the relief valve 3, and the protective relief valve 4 is provided as described above. A relief oil pipe separate from the relief valve 3 is branched and provided in the middle. The other configurations are similar to those of the above embodiment and are indicated by the same reference numerals.

なお、油圧クラツチに圧油を供給するのに、電
磁弁ではなく、手動で操作するバルブでは、その
バルブポートの開き量を調節することで半クラツ
チ状態とできるが、操作に熟練を要するものであ
る。この点、上記実施例によれば、熟練を要する
ことなく半クラツチ状態とすることができる。ち
なみに、第5図乃至第7図は、油圧クラツチの手
動操作バルブ10の操作機構を示す。手動操作バ
ルブ10は、トラクタのミツシヨンケース11の
上面に固定され、その上面にはカバー12が取付
けられている。手動操作バルブ10のスプール1
3の先端には、V字状のリンク杆14の一端が縦
軸中心に揺動自在に取付けられている。V字状の
リンク杆14はその枝分かれ部分が、カバー12
から下向き延設されたリンク軸15に縦軸中心に
揺動自在に外嵌されている。そして、リンク杆1
4の他端には、プツシユプルワイヤ16のインナ
ワイヤ17の一端が連結されている。また、プツ
シユプルワイヤ16のアウタワイヤ18の一端
は、カバー12から下向き延設された受け板19
に係合されている。そして、プツシユプルワイヤ
16の他端は、操作レバー装置20に連結されて
いる。操作レバー装置20は、正面視コ字形状の
取付部材21にレバー22を揺動自在に取付けた
ものである。この取付部材21は、その上端のフ
ランジ23を介して、フエンダ24の前方傾斜部
分の内面にボルト止めされ、レバー22は、フエ
ンダ24に開設された通孔25から外方突出さ
れ、オペレータにより揺動操作自在とされてい
る。そして、プツシユプルワイヤ16のインナワ
イヤ17の他端がレバー22の基端に連結され、
アウタワイヤ18の他端が、取付部材21の前面
に設けられた受け板26に係合されている。これ
により、レバー22の揺動操作によりプツシユプ
ルワイヤ16を介してリンク杆14が揺動され、
スプール13が伸縮されて、油圧クラツチへの圧
油供給量が調節される。
Note that when using a manually operated valve (rather than a solenoid valve) to supply pressure oil to the hydraulic clutch, the half-clutch state can be achieved by adjusting the opening amount of the valve port, but this requires skill to operate. be. In this regard, according to the above embodiment, it is possible to bring the clutch into a half-clutch state without requiring any skill. Incidentally, FIGS. 5 to 7 show the operating mechanism of the manually operated valve 10 of the hydraulic clutch. The manually operated valve 10 is fixed to the upper surface of a transmission case 11 of a tractor, and a cover 12 is attached to the upper surface. Spool 1 of manually operated valve 10
One end of a V-shaped link rod 14 is attached to the tip of 3 so as to be swingable about the vertical axis. The branching part of the V-shaped link rod 14 is connected to the cover 12.
The link shaft 15 is externally fitted onto a link shaft 15 that extends downward from the link shaft 15 so as to be swingable about the vertical axis. And link rod 1
One end of the inner wire 17 of the push-pull wire 16 is connected to the other end of the push-pull wire 16 . Further, one end of the outer wire 18 of the push-pull wire 16 is connected to a receiving plate 19 extending downward from the cover 12.
is engaged with. The other end of the push-pull wire 16 is connected to an operating lever device 20. The operating lever device 20 has a lever 22 swingably attached to a mounting member 21 which has a U-shape when viewed from the front. The mounting member 21 is bolted to the inner surface of the front inclined portion of the fender 24 via a flange 23 at its upper end, and the lever 22 is protruded outward from a through hole 25 formed in the fender 24, and is swung by the operator. It is said that it can be operated freely. The other end of the inner wire 17 of the push-pull wire 16 is connected to the base end of the lever 22,
The other end of the outer wire 18 is engaged with a receiving plate 26 provided on the front surface of the mounting member 21. As a result, the link rod 14 is swung through the push-pull wire 16 by the swiveling operation of the lever 22.
The spool 13 is expanded or contracted to adjust the amount of pressure oil supplied to the hydraulic clutch.

(発明の効果) 本発明によれば、リリーフ弁3に通じるリリー
フ油の油路を開閉自在でかつ操作レバー5によつ
て切換え可能な第二電磁弁S2を設け、前記操作
レバー5を、両電磁弁S1,S2が閉状態とな
り、両電磁弁S1,S2が開状態となり、第1電
磁弁S1が開状態で第二電磁弁S2が閉状態とな
る3位置に有段的に切換え可能にしているので、
1本の操作レバーを切換えて両電磁弁を開状態す
るだけで、油圧クラツチを半クラツチ状態にする
ことができ、操作レバーを有段的に切換えるの
で、常に略一定の半クラツチ状態への切換えが簡
単かつ正確にでき、インチング動作も極めて容易
になる。
(Effects of the Invention) According to the present invention, the second electromagnetic valve S2 is provided which can open and close the relief oil passage leading to the relief valve 3 and which can be switched by the operating lever 5. The solenoid valves S1 and S2 are in a closed state, both solenoid valves S1 and S2 are in an open state, and the first solenoid valve S1 is in an open state and the second solenoid valve S2 is in a closed state. Because
The hydraulic clutch can be brought into a half-clutch state simply by switching one operating lever and opening both solenoid valves.Since the operating lever is switched in a stepwise manner, switching to a nearly constant half-clutching state is possible. can be done easily and accurately, and the inching operation is also extremely easy.

【図面の簡単な説明】[Brief explanation of drawings]

第1図は本発明の実施例に係るクラツチ「切」
状態での油圧回路図、第2図は同半クラツチ状態
における油圧回路図、第3図は同クラツチ「入」
状態での油圧回路図、第4図は異なつた実施例に
係る半クラツチ状態における油圧回路図、第5図
はトラクタの手動操作バルブの操作機構の取付説
明用断面図、第6図は同平面図、第7図は同操作
レバー装置の斜視図である。 1……油圧クラツチ、2……ポンプ、3……リ
リーフ弁、S1……第一電磁弁、S2……第二電
磁弁。
FIG. 1 shows a clutch "disengaged" according to an embodiment of the present invention.
Fig. 2 is a hydraulic circuit diagram when the clutch is engaged, Fig. 3 is a hydraulic circuit diagram when the clutch is engaged.
Fig. 4 is a hydraulic circuit diagram in a half-clutch state according to different embodiments, Fig. 5 is a cross-sectional view for explaining the installation of the operating mechanism of the manually operated valve of the tractor, and Fig. 6 is the same plane. 7 are perspective views of the operating lever device. 1... Hydraulic clutch, 2... Pump, 3... Relief valve, S1... First solenoid valve, S2... Second solenoid valve.

Claims (1)

【特許請求の範囲】 1 油圧クラツチ1と、該油圧クラツチ1に圧油
を供給するポンプ2と、ポンプ2から油圧クラツ
チ1への油の供給油路を開閉する第一電磁弁S1
と、この第一電磁弁S1を切換え操作する操作レ
バー5と、油圧クラツチ1が半クラツチ状態での
油圧をリリーフ圧とするリリーフ弁3とを備えた
油圧クラツチの制御回路において、 前記リリーフ弁3に通じるリリーフ油の油路を
開閉自在でかつ操作レバー5によつて切換え可能
な第二電磁弁S2を設け、前記操作レバー5を、
両電磁弁S1,S2が閉状態となり、両電磁弁S
1,S2が開状態となり、第1電磁弁S1が開状
態で第二電磁弁S2が閉状態となる3位置に有段
的に切換え可能にしていることを特徴とする油圧
クラツチの制御油圧回路。
[Claims] 1. A hydraulic clutch 1, a pump 2 that supplies pressure oil to the hydraulic clutch 1, and a first electromagnetic valve S1 that opens and closes an oil supply path from the pump 2 to the hydraulic clutch 1.
In a control circuit for a hydraulic clutch, the control circuit includes a control lever 5 for switching and operating the first electromagnetic valve S1, and a relief valve 3 whose relief pressure is the hydraulic pressure when the hydraulic clutch 1 is in a half-clutch state. A second solenoid valve S2 is provided which can freely open and close the relief oil oil passage leading to the area and which can be switched by the operating lever 5, and the operating lever 5 is configured to
Both solenoid valves S1 and S2 are closed, and both solenoid valves S1 and S2 are closed.
1. A control hydraulic circuit for a hydraulic clutch, characterized in that it can be switched in a stepwise manner to three positions: 1, S2 is in an open state, a first solenoid valve S1 is in an open state, and a second solenoid valve S2 is in a closed state. .
JP60254174A 1985-11-13 1985-11-13 Control oil pressure circuit of hydraulic clutch Granted JPS62113924A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP60254174A JPS62113924A (en) 1985-11-13 1985-11-13 Control oil pressure circuit of hydraulic clutch

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP60254174A JPS62113924A (en) 1985-11-13 1985-11-13 Control oil pressure circuit of hydraulic clutch

Publications (2)

Publication Number Publication Date
JPS62113924A JPS62113924A (en) 1987-05-25
JPH0481049B2 true JPH0481049B2 (en) 1992-12-22

Family

ID=17261257

Family Applications (1)

Application Number Title Priority Date Filing Date
JP60254174A Granted JPS62113924A (en) 1985-11-13 1985-11-13 Control oil pressure circuit of hydraulic clutch

Country Status (1)

Country Link
JP (1) JPS62113924A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107763113A (en) * 2017-09-18 2018-03-06 宝沃汽车(中国)有限公司 Clutch control system, clutch for clutch control method and vehicle

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59167099U (en) * 1983-04-25 1984-11-08 株式会社 神崎高級工機製作所 Marine propulsion system

Also Published As

Publication number Publication date
JPS62113924A (en) 1987-05-25

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