JPS63269730A - Emergency controller for hydraulic control clutch and transmission - Google Patents

Emergency controller for hydraulic control clutch and transmission

Info

Publication number
JPS63269730A
JPS63269730A JP62101797A JP10179787A JPS63269730A JP S63269730 A JPS63269730 A JP S63269730A JP 62101797 A JP62101797 A JP 62101797A JP 10179787 A JP10179787 A JP 10179787A JP S63269730 A JPS63269730 A JP S63269730A
Authority
JP
Japan
Prior art keywords
clutch
control valve
valve
control
pressure oil
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
Application number
JP62101797A
Other languages
Japanese (ja)
Other versions
JPH0628990B2 (en
Inventor
Fujio Momiyama
冨士男 籾山
Koji Harada
浩二 原田
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.)
Hino Motors Ltd
Original Assignee
Hino Motors Ltd
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 Hino Motors Ltd filed Critical Hino Motors Ltd
Priority to JP62101797A priority Critical patent/JPH0628990B2/en
Publication of JPS63269730A publication Critical patent/JPS63269730A/en
Publication of JPH0628990B2 publication Critical patent/JPH0628990B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Arrangement And Mounting Of Devices That Control Transmission Of Motive Force (AREA)
  • Arrangement Or Mounting Of Control Devices For Change-Speed Gearing (AREA)
  • Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)
  • Control Of Transmission Device (AREA)

Abstract

PURPOSE:To make a car travelable by means of manual control even in time of trouble in an electric control system by connecting another system's power source electrically to a solenoid-operated directional control valve which selectively feeds each controlling cylinder of a clutch and a transmission with pressure oil. CONSTITUTION:At normal time, since a clutch manual control valve 24 opens a relief passage 17 between a clutch hydraulic control valve 5 and a solenoid pressure control valve 16, an interval between respective passages 18 and 19 is interconnected to each other, while each relief circuit of these passages and a pressure oil control valve 25 is closed. And, a selector valve 14 is selected by the solenoid pressure control valve 16 via a clutch hydraulic control valve 5 and pressure oil is fed to the side of, for example, a clutch engaging chamber 10 in a clutch control cylinder 8, thus a clutch is engaged. In this case, when trouble occurs in an electric control system, an emergency control transfer switch 40 is operated. And, a solenoid-operated directional control valve 4 is energized with current directly from a power source 41, whereby selective feed of the pressure oil is secured in this way.

Description

【発明の詳細な説明】 〈産業上の利用分野〉 本発明は、油圧制御式クラッチ、トランスミッションの
非常用コントロール装置に関するものである。
DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to an emergency control device for a hydraulically controlled clutch and transmission.

〈従来の技術〉 自動車のクラッチ及びトランスミッションを油圧により
自動制御する装置がある。その機構は、オイルポンプか
ら吐出される圧油を一定流量に制御する流量制御弁と、
一定流量に制御された圧油をクラッチ制御用シリンダ側
とトランスミッション制御用シリンダ側とに切替える電
磁切替弁と、前記圧油をクラッチ制御用シリンダのクラ
ッチ切断室側とクラッチ接続室側とに切替供給する切替
弁と、この切替弁を切替制御するクラッチ油圧制御弁と
、このクラッチ油圧制御弁を制御する電磁圧力制御弁と
を備えたものである。
<Prior Art> There is a device that automatically controls the clutch and transmission of an automobile using hydraulic pressure. The mechanism consists of a flow control valve that controls the pressure oil discharged from the oil pump to a constant flow rate;
An electromagnetic switching valve that switches pressurized oil controlled at a constant flow rate to the clutch control cylinder side and the transmission control cylinder side, and the pressurized oil is switched and supplied to the clutch disengagement chamber side and the clutch connection chamber side of the clutch control cylinder. A clutch oil pressure control valve that switches and controls this switching valve, and an electromagnetic pressure control valve that controls this clutch oil pressure control valve.

〈発明が解決しようとする問題点〉 上記装置において、電気制御系に万一故障が発生すると
、電磁切替弁や電磁圧力制御弁が作動不能となり自走が
できなくなる。
<Problems to be Solved by the Invention> In the above device, if a failure occurs in the electrical control system, the electromagnetic switching valve and the electromagnetic pressure control valve will become inoperable and the device will not be able to run on its own.

本発明は、電気制御系が万一故障した場合でも、手動に
よりコントロールし、自走を可能とした非常用コントロ
ール装置を提供するものである。
The present invention provides an emergency control device that can be manually controlled and self-propelled even if the electrical control system should fail.

〈問題点を解決するための手段〉 本発明は、上記の問題点を解決するために、オイルポン
プから吐出される圧油を一定流量に制御する流量制御弁
と、一定流量に制御された圧油をクラッチ制御用シリン
ダ側とトランスミッション制御用シリンダ側とに切替え
る電磁切替弁と、前記圧油をクラッチ制御用シリンダの
クラッチ切断室側とクラッチ接続室側とに切替供給する
切替弁と、この切替弁を切替制御するクラッチ油圧制御
弁と、このクラッチ油圧制御弁を制御する電磁圧力制御
弁とを備えた油圧制御式クラッチ、トランスミッション
において、前記電磁切替弁のソレノイドに、この電磁切
替弁の制御用電気回路とは別系統で電源と非常用コント
ロール切換スイッチを介して電気的に接続したものであ
る。
<Means for Solving the Problems> In order to solve the above problems, the present invention provides a flow control valve that controls pressure oil discharged from an oil pump to a constant flow rate, and a pressure oil that is controlled to a constant flow rate. an electromagnetic switching valve that switches oil between a clutch control cylinder side and a transmission control cylinder side; a switching valve that switches and supplies the pressure oil to a clutch disconnection chamber side and a clutch connection chamber side of the clutch control cylinder; In a hydraulically controlled clutch or transmission that includes a clutch hydraulic control valve that switches and controls the valve, and an electromagnetic pressure control valve that controls the clutch hydraulic control valve, a solenoid of the electromagnetic switching valve is provided with a solenoid for controlling the electromagnetic switching valve. It is a separate system from the electric circuit and is electrically connected via a power source and an emergency control switch.

〈作 用〉 本発明は、電気制御系が万一故障した場合、非常用コン
トロール切換スイッチを手動で切替えて別系統の電気回
路より電磁切替弁に通電し油圧制御式クラッチ、トラン
スミッションの制御を行うものである。
<Operation> In the event that the electric control system fails, the present invention manually switches the emergency control changeover switch and energizes the electromagnetic changeover valve from a separate electric circuit to control the hydraulically controlled clutch and transmission. It is something.

〈実施例〉 以下本発明の実施例を図面に基づいて説明する。1はオ
イルポンプ、33は前記オイルポンプ1から吐出された
圧油を一定流量とする流量調整弁、34はフィルタであ
る。このオイルポンプ1より吐出された圧油はクラッチ
側への圧油給送通路2とトランスミッション側の圧油給
送通路3とに分流される。4は電磁切替弁である。
<Example> Hereinafter, an example of the present invention will be described based on the drawings. 1 is an oil pump, 33 is a flow rate regulating valve that maintains a constant flow rate of the pressure oil discharged from the oil pump 1, and 34 is a filter. Pressure oil discharged from the oil pump 1 is divided into a pressure oil supply passage 2 to the clutch side and a pressure oil supply passage 3 to the transmission side. 4 is an electromagnetic switching valve.

前記クラッチ側には、クラッチ制御用シリンダ8を有し
ている。このクラッチ制御用シリンダ8は、ピストン9
によりクラッチ切断室10とクラッチ接続室11とが形
成され、この両室10.11はピストン9に設けられた
オリフィス12を介して連通されている。
A clutch control cylinder 8 is provided on the clutch side. This clutch control cylinder 8 has a piston 9
A clutch disconnecting chamber 10 and a clutch connecting chamber 11 are formed by this, and these chambers 10 and 11 communicate with each other via an orifice 12 provided in the piston 9.

このクラッチ制御用シリンダ8への圧油の供給制御回路
構成は次の通りである。前記圧油給送通路2よりクラッ
チ圧油制御弁5を介してクラッチ切断側室10に連通す
る回路6と、圧油給送通路2よりチェック弁13及び切
替弁14を介してクラッチ切断側室10に連通する回路
15と、前記クラッチ油圧制御弁5を制御するための低
圧側に通じるレリーフ通路17に配置した電磁圧力制御
弁16とを有し、前記回路6にはクラッチ切断側室10
に圧油を常に一定圧に制御して供給する背圧弁7とを備
えている。
The circuit configuration for controlling the supply of pressure oil to the clutch control cylinder 8 is as follows. A circuit 6 communicates from the pressure oil supply passage 2 with the clutch disconnection side chamber 10 via the clutch pressure oil control valve 5, and a circuit 6 communicates with the clutch disconnection side chamber 10 from the pressure oil supply passage 2 through the check valve 13 and the switching valve 14. It has a circuit 15 that communicates with it, and an electromagnetic pressure control valve 16 disposed in a relief passage 17 communicating with the low pressure side for controlling the clutch oil pressure control valve 5.
and a back pressure valve 7 that always controls and supplies pressurized oil at a constant pressure.

一方、トランスミッション側には、凹路のトランスミッ
ションをセレクト作動するセレクト用シリンダと、シフ
ト作動するシフト用シリンダとを有し、圧油給送通路3
の圧油をセレクト用シリンダに供給し、かつ低圧側へ排
出する電磁セレクト弁と、シフト用シリンダに供給し、
かつ低圧側へ排出する電磁シフト弁並びに手動操作弁と
からなるシフト、セレクト制御弁42を備えている。
On the other hand, the transmission side has a selection cylinder that selects and operates the concave transmission and a shift cylinder that operates the shift.
An electromagnetic select valve that supplies pressurized oil to the select cylinder and discharges it to the low pressure side, and a shift cylinder.
It also includes a shift and select control valve 42 consisting of an electromagnetic shift valve and a manually operated valve for discharging to the low pressure side.

さらにクラッチ側にクラッチ用マニアルコントロール弁
24が設けられている。
Further, a clutch manual control valve 24 is provided on the clutch side.

前記クラッチ用マニアルコントロール弁24は、クラッ
チ油圧制御弁5と電磁圧力制御弁16との間で切替弁1
4と関係して配置される。すなわち、クラッチ圧油制御
弁5と電磁圧力制御弁16のレリーフ通路17を開閉す
る弁部と、チェック弁13より前の圧油給送通路2から
通路18を介して切替弁14の図において右方6のオペ
レーションポートに接続される通路19を開閉する弁部
と、切替弁14の図において左方のオペレーションボー
トに回路6より通路20を介して供給されている一定圧
の信号圧を低圧側ヘレリーフさせる弁部と、電磁圧力制
御弁16と同し機能を有する油圧制御弁25とから構成
されている。
The clutch manual control valve 24 is a switching valve 1 between the clutch hydraulic control valve 5 and the electromagnetic pressure control valve 16.
It is placed in relation to 4. That is, the clutch pressure oil control valve 5 and the valve part that opens and closes the relief passage 17 of the electromagnetic pressure control valve 16 are connected to the switching valve 14 from the pressure oil supply passage 2 before the check valve 13 through the passage 18 to the right in the figure. A valve part that opens and closes the passage 19 connected to the operation port 6, and a constant signal pressure supplied from the circuit 6 through the passage 20 to the operation boat on the left side in the diagram of the switching valve 14, is connected to the low pressure side. It is composed of a valve part that is relieved, and a hydraulic control valve 25 that has the same function as the electromagnetic pressure control valve 16.

本発明は、上記の構成において、オイルポンプ1からの
圧油をクラッチ制御用シリンダ側とトランスミッション
制御用シリンダ側とに切替える電磁切替弁4のソレノイ
ドに、この電磁切替弁4の制御用電気回路とは別系統で
電源41と非常用コントロール切換スイッチ40を介し
て電気的に接続したものである。尚、電磁切替弁4のソ
レノイドはダブルソレノイド構成とし、その1つのソレ
ノイドは自動制御するコントローラと接続し、他の1つ
のソレノイドは前記別系統の電源41と接続される。
In the above configuration, the present invention includes an electric circuit for controlling the electromagnetic switching valve 4 in the solenoid of the electromagnetic switching valve 4 that switches the pressure oil from the oil pump 1 to the clutch control cylinder side and the transmission control cylinder side. is electrically connected to a power source 41 via a separate system and an emergency control changeover switch 40. The solenoid of the electromagnetic switching valve 4 has a double solenoid configuration, one of which is connected to a controller for automatic control, and the other solenoid is connected to the power source 41 of the separate system.

次に上記構成の作用について説明する。先ず、通常にお
いては、クラッチ用マニアルコントロール弁24は、ク
ラッチ油圧制御弁5と電磁圧力制御弁16間のレリーフ
通路17を開口し、通1118.19間を連通状態とし
、通路26と圧油制御弁25のレリーフ回路を閉止して
いる。これにより、電磁圧力制御弁16が作動すること
によりクラッチ油圧制御弁5を制御し、このクラッチ油
圧制御によって切替弁14が切替制御され、クラッチ接
続側室10にクラッチ切断側室11に供給されている一
定圧以上の圧油を供給することによりクラッチ接となり
、この供給圧油を切替弁14により低圧側にレリーフす
ることによりクラッチ断の動作を行う。
Next, the operation of the above configuration will be explained. First, normally, the clutch manual control valve 24 opens the relief passage 17 between the clutch oil pressure control valve 5 and the electromagnetic pressure control valve 16, brings communication between the passages 1118 and 19, and connects the passage 26 and the pressure oil control valve. The relief circuit of valve 25 is closed. As a result, the electromagnetic pressure control valve 16 is actuated to control the clutch hydraulic control valve 5, and the switching valve 14 is controlled to switch by this clutch hydraulic control, and a constant amount is supplied to the clutch connection side chamber 10 and the clutch disconnection side chamber 11. The clutch is engaged by supplying pressure oil higher than the pressure, and the clutch is disengaged by relieving the supplied pressure oil to the low pressure side by the switching valve 14.

一方、トランスミッションは、シフト、セレクト制御弁
42によって所定のレンジにシフト、セレクト作動され
る。
On the other hand, the transmission is operated to shift and select a predetermined range by a shift and select control valve 42.

また、オイルポンプ1からの圧油は電磁切替弁4によっ
てクラッチ制御用シリンダ側とトランスミッション制御
用シリンダ側とに切替え制御される。
Further, the pressure oil from the oil pump 1 is controlled to be switched between the clutch control cylinder side and the transmission control cylinder side by an electromagnetic switching valve 4.

そこで、前記電磁切替弁4を切替え制御するコントロー
ラからの電気制御系に故障が発生した場合、電磁切替弁
4は勿論のこと電磁圧力制御弁16、電磁シフト、セレ
クト弁も作動不能となる。このような場合、非常用コン
トロール切換スイッチ40を操作して電源41より直接
電磁切替弁4のソレノイドに通電して圧油をクラッチ制
御用シリンダ側とトランスミッション制御用シリンダ側
とに切替え、圧油の切替供給を保全する。また、クラッ
チの接、断制御はクラッチ用マニアルコントロール弁2
4を手動で繰作して行い、トランスミッションはシフト
、セレクト制御弁42に設けられている手動レバー50
によって手動制御し、所定のレンジにシフト、セレクト
作動して自走を可能とするものである。
Therefore, if a failure occurs in the electrical control system from the controller that switches and controls the electromagnetic switching valve 4, not only the electromagnetic switching valve 4 but also the electromagnetic pressure control valve 16, electromagnetic shift, and select valve become inoperable. In such a case, operate the emergency control changeover switch 40 to energize the solenoid of the electromagnetic changeover valve 4 directly from the power source 41 to switch the pressure oil between the clutch control cylinder side and the transmission control cylinder side. Preserve switching supply. In addition, clutch engagement/disengagement control is performed using the clutch manual control valve 2.
4 manually, and the transmission is shifted using a manual lever 50 provided on the select control valve 42.
It is manually controlled by the system, and allows self-propulsion by shifting and selecting a predetermined range.

〈発明の効果〉 以上のように本発明によると、電気制御系に故障が発生
し、圧油を制御する各電磁弁が作動不能となっても、圧
油をクラッチ制御用シリンダ側とトランスミッション制
御用シリンダ側に切替える電磁切暦弁には別系統の電源
により非常用コントロール切換スイッチの操作にて通電
して切替えを可能とし、圧油の切替え供給を保全した状
態でクラッチ用マニアルコントロール弁並びにシフト、
セレクト制御弁の手動レバーを手動繰作してクラッチ並
びにトランスミッションを油圧制御する構成であるから
、電気制御系に故障が発生しても手動制御による自走が
可能となり安全性を確保する利点がある。
<Effects of the Invention> As described above, according to the present invention, even if a failure occurs in the electrical control system and each solenoid valve that controls pressure oil becomes inoperable, the pressure oil is transferred to the clutch control cylinder side and the transmission control side. The electromagnetic switching valve that switches to the clutch cylinder side is powered by a separate power supply system and can be switched by operating the emergency control switch, and the clutch manual control valve and shift valve can be switched while maintaining the pressure oil switching supply. ,
Since the clutch and transmission are hydraulically controlled by manually operating the manual lever of the select control valve, even if a failure occurs in the electrical control system, self-propulsion is possible with manual control, which has the advantage of ensuring safety. .

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

第1図は本発明装置の圧油制御回路図である。 1・・・オイルポンプ、2.3・・・圧油給送通路、4
・・・電磁切替弁、5・・・クラッチ油圧制御弁、8・
・・クラッチ制御用シリンダ、14・・・切替弁、16
・・・電磁圧力制御弁、40・・・非常用コントロール
切換スイッチ、41・・・電源、42・・・シフト、セ
レクト制御弁。
FIG. 1 is a pressure oil control circuit diagram of the device of the present invention. 1...Oil pump, 2.3...Pressure oil supply passage, 4
... Solenoid switching valve, 5... Clutch hydraulic control valve, 8.
...Clutch control cylinder, 14...Switching valve, 16
...Electromagnetic pressure control valve, 40...Emergency control changeover switch, 41...Power source, 42...Shift, select control valve.

Claims (1)

【特許請求の範囲】[Claims]  オイルポンプから吐出される圧油を一定流量に制御す
る流量制御弁と、一定流量に制御された圧油をクラッチ
制御用シリンダ側とトランスミッション制御用シリンダ
側とに切替える電磁切替弁と、前記圧油をクラッチ制御
用シリンダのクラッチ切断室側とクラッチ接続室側とに
切替供給する切替弁と、この切替弁を切替制御するクラ
ッチ油圧制御弁と、このクラッチ油圧制御弁を制御する
電磁圧力制御弁とを備えた油圧制御式クラッチ、トラン
スミッションにおいて、前記電磁切替弁のソレノイドに
、この電磁切替弁の制御用電気回路とは別系統で電源と
非常用コントロール切換スイッチを介して電気的に接続
したことを特徴とする油圧制御式クラッチ、トランスミ
ッションの非常用コントロール装置。
A flow control valve that controls the pressure oil discharged from the oil pump to a constant flow rate, an electromagnetic switching valve that switches the pressure oil controlled to a constant flow rate between a clutch control cylinder side and a transmission control cylinder side, and the pressure oil a switching valve that selectively supplies the clutch control cylinder to the clutch disconnecting chamber side and the clutch connecting chamber side, a clutch hydraulic control valve that switches and controls this switching valve, and an electromagnetic pressure control valve that controls this clutch hydraulic control valve. In a hydraulically controlled clutch or transmission equipped with a hydraulically controlled clutch or transmission, the solenoid of the electromagnetic switching valve is electrically connected via a power source and an emergency control switch in a system separate from the electrical circuit for controlling the electromagnetic switching valve. Features a hydraulically controlled clutch and transmission emergency control device.
JP62101797A 1987-04-27 1987-04-27 Emergency control device for hydraulically controlled clutch and transmission Expired - Lifetime JPH0628990B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62101797A JPH0628990B2 (en) 1987-04-27 1987-04-27 Emergency control device for hydraulically controlled clutch and transmission

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62101797A JPH0628990B2 (en) 1987-04-27 1987-04-27 Emergency control device for hydraulically controlled clutch and transmission

Publications (2)

Publication Number Publication Date
JPS63269730A true JPS63269730A (en) 1988-11-08
JPH0628990B2 JPH0628990B2 (en) 1994-04-20

Family

ID=14310140

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62101797A Expired - Lifetime JPH0628990B2 (en) 1987-04-27 1987-04-27 Emergency control device for hydraulically controlled clutch and transmission

Country Status (1)

Country Link
JP (1) JPH0628990B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005055724A1 (en) * 2005-11-23 2007-05-24 Daimlerchrysler Ag Operation mechanism e.g. for automated moving off clutch of motor vehicle, closed and opened by change of activation pressure of operating fluid with activation pressure in normal operation is controlled by change of output signal
CN104154142A (en) * 2014-07-30 2014-11-19 贵州凯星液力传动机械有限公司 Hydraulic transmission control valve
CN107739001A (en) * 2017-12-01 2018-02-27 江西工埠机械有限责任公司 A kind of new type of safe is met an urgent need liquid braking device

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6277238A (en) * 1985-09-30 1987-04-09 Isuzu Motors Ltd Emergent control device of vehicle clutch

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6277238A (en) * 1985-09-30 1987-04-09 Isuzu Motors Ltd Emergent control device of vehicle clutch

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005055724A1 (en) * 2005-11-23 2007-05-24 Daimlerchrysler Ag Operation mechanism e.g. for automated moving off clutch of motor vehicle, closed and opened by change of activation pressure of operating fluid with activation pressure in normal operation is controlled by change of output signal
CN104154142A (en) * 2014-07-30 2014-11-19 贵州凯星液力传动机械有限公司 Hydraulic transmission control valve
CN107739001A (en) * 2017-12-01 2018-02-27 江西工埠机械有限责任公司 A kind of new type of safe is met an urgent need liquid braking device
CN107739001B (en) * 2017-12-01 2024-04-09 江西工埠机械有限责任公司 Novel safety emergency hydraulic brake

Also Published As

Publication number Publication date
JPH0628990B2 (en) 1994-04-20

Similar Documents

Publication Publication Date Title
US4480527A (en) Power transmission
US4422290A (en) Hydraulic control system for governing steering and implement actuators
US5419129A (en) Hydraulic system for open or closed-centered systems
US4841816A (en) Hydraulic control for a power transmission with a manual range selector valve
US5377717A (en) Hydraulic flow control valve assemblies
US3976158A (en) Power steering system for electric-drive lift truck
EP0833062A4 (en) Driving device for a hydraulic motor
JPS63269730A (en) Emergency controller for hydraulic control clutch and transmission
JPS63269731A (en) Emergency controller for hydraulic control clutch and transmission
CN216546137U (en) Emergent oil feeding system and loader
US5564543A (en) Transmission control valves
US4610271A (en) High pressure hydraulic distributor
US5779324A (en) Towed vehicle brake system
JP3725297B2 (en) Hydraulic control device
US4650048A (en) Control system for transmission engagement
JPS63259255A (en) Emergency controller for hydraulic control clutch and transmission
JPS63251338A (en) Hydraulic circuit structure for hydraulically controlled clutch, transmission
JPH02107872A (en) Oil path switching device
JPS63243556A (en) Emergency control device for hydraulically controlled clutch transmission
US6047628A (en) Control device for a steering system
JP2751331B2 (en) Lubricating device for power take-off mechanism
KR100354038B1 (en) Hydraulic damper clutch control device of automatic transmission
JPH10274210A (en) Hydraulic circuit for vehicle
CA1141627A (en) Hydraulic system for harvesting machines
JP2762518B2 (en) Lubricating device for power take-off mechanism