JPS6158702B2 - - Google Patents
Info
- Publication number
- JPS6158702B2 JPS6158702B2 JP53084559A JP8455978A JPS6158702B2 JP S6158702 B2 JPS6158702 B2 JP S6158702B2 JP 53084559 A JP53084559 A JP 53084559A JP 8455978 A JP8455978 A JP 8455978A JP S6158702 B2 JPS6158702 B2 JP S6158702B2
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- throttle opening
- detection device
- motor
- electric signal
- 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
Links
- 238000001514 detection method Methods 0.000 claims description 25
- 230000005540 biological transmission Effects 0.000 claims description 16
- 230000002441 reversible effect Effects 0.000 claims description 8
- 230000003247 decreasing effect Effects 0.000 claims description 2
- 239000003921 oil Substances 0.000 description 9
- 230000001133 acceleration Effects 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 230000001934 delay Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000003321 amplification Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
Landscapes
- Control Of Fluid Gearings (AREA)
Description
【発明の詳細な説明】
本発明は、車輌、主として自動車に用いられる
無段変速機において、その入、出力軸間の変速比
を無段階に自動制御する装置に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device for continuously and automatically controlling the gear ratio between an input shaft and an output shaft of a continuously variable transmission used in a vehicle, mainly an automobile.
車輌の経済的運行や乗心地の向上を追究する
と、スロツトル開度とエンジン回転数の関係は一
例を挙げると第３図に示すような所定の比例関係
に保つ必要があることがわかる。 In pursuit of economical operation of vehicles and improvement of riding comfort, it is found that the relationship between throttle opening and engine speed must be maintained in a predetermined proportional relationship as shown in FIG. 3, for example.
本発明はその要求を満足させるべく、予め設定
されたスロツトル開度とエンジン回転数との関係
が常に的確に得られるように変速機の変速比を自
動的に無段階に制御することができ、しかもエン
ジンの急加速操作時でも、変速機に急激な減速が
生起してエンジンがオーバーランするような不都
合を未然に防止できるようにした、車輌用無段変
速機の自動制御装置を提供することを目的とす
る。 In order to satisfy this requirement, the present invention is capable of automatically and steplessly controlling the gear ratio of a transmission so that a preset relationship between throttle opening and engine speed is always accurately obtained. To provide an automatic control device for a continuously variable transmission for a vehicle, which can prevent inconveniences such as sudden deceleration of the transmission and overrun of the engine even when the engine is suddenly accelerated. With the goal.
かかる目的を達成するために本発明は、スロツ
トル開度を検出してそれに応じた第１電気信号を
発生するスロツトル開度検出装置と；エンジン回
転数を検出してそれに応じた第２電気信号を発生
するエンジン回転数検出装置と；前記第１電気信
号の量と前記第２電気信号の量の差を計り、それ
らに差があるときのみその差の正、負値に対応し
た正、負値をもつ信号を発生する差動回路と；前
記スロツトル開度検出装置と前記差動回路との間
に介装され前記第１電気信号の差動回路への伝達
を遅延させる遅延回路と；無段変速機の変速操作
部材に連動連結し正、逆転によりその変速操作部
材を減、増速方向へ連続的に作動し得るモータを
有し、前記差動回路の出力信号を入力されると、
その正、負値に応じて前記モータを正、逆転する
ように構成した駆動回路と；より構成されること
を特徴とする。 In order to achieve this object, the present invention includes a throttle opening detection device that detects the throttle opening and generates a first electrical signal in accordance with the throttle opening; and a throttle opening detection device that detects the engine rotational speed and generates a second electrical signal in accordance with the throttle opening. A generated engine rotation speed detection device; measures the difference between the amount of the first electric signal and the amount of the second electric signal, and only when there is a difference between them, a positive or negative value corresponding to the positive or negative value of the difference; a differential circuit that generates a signal having the following characteristics; a delay circuit that is interposed between the throttle opening detection device and the differential circuit and delays transmission of the first electrical signal to the differential circuit; It has a motor that is interlocked and connected to a speed change operation member of a transmission and can continuously operate the speed change operation member in the direction of decreasing or increasing speed by forward or reverse rotation, and when the output signal of the differential circuit is inputted,
and a drive circuit configured to rotate the motor in a positive or reverse direction depending on the positive or negative value.
以下、図面により本発明の一実施例について説
明すると、先ず第１図は本発明装置全体を系統的
に示すものであり、無段変速機Ｔは、エンジンＥ
より駆動される入力軸１を持つた定吐出量型油圧
ポンプ２と、車輪Ｗを駆動する出力軸３を持つた
可変容量型の油圧モータ４とより構成され、それ
らは同軸線上に配設されると共に油圧閉回路５に
より相互に接続されている。 Hereinafter, one embodiment of the present invention will be described with reference to the drawings. First, FIG.
The hydraulic pump 2 is a constant discharge type hydraulic pump 2 having an input shaft 1 driven by a motor, and a variable displacement hydraulic motor 4 having an output shaft 3 driving wheels W, which are arranged on the same axis. and are mutually connected by a hydraulic closed circuit 5.
油圧閉回路５には、それに作動油を補給すべく
補給ポンプ６が逆止弁８，８′を介して接続さ
れ、その補給ポンプ６は前記入力軸１より駆動さ
れるようになつている。尚、９はクラツチ弁、１
０は補給ポンプ６の油溜、１１はリリーフ弁であ
る。 A replenishment pump 6 is connected to the hydraulic closed circuit 5 through check valves 8 and 8' to replenish it with hydraulic oil, and the replenishment pump 6 is driven by the input shaft 1. In addition, 9 is a clutch valve, 1
0 is an oil reservoir of the supply pump 6, and 11 is a relief valve.
而して、エンジンＥより入力軸１を介して油圧
ポンプ２を駆動すると、圧油が油圧閉回路５を循
環し、油圧モータ４を通過するとき、それを駆動
する。この場合、油圧モータ４の容量を最大から
最小（零）に調節すれば、入、出力軸１，３間の
変速比を最大から最小（１：１）に無段階に調節
することができる。 When the hydraulic pump 2 is driven by the engine E via the input shaft 1, the pressure oil circulates through the hydraulic closed circuit 5, and when it passes through the hydraulic motor 4, it drives it. In this case, by adjusting the capacity of the hydraulic motor 4 from the maximum to the minimum (zero), the speed ratio between the input and output shafts 1 and 3 can be adjusted steplessly from the maximum to the minimum (1:1).
油圧モータ４の容量は、変速操作部材７を図示
のLOW位置からTOP位置にシフトすることによ
り最大から最小（零）に無段階に調節することが
できる。この変速操作部材７を操作するのに油圧
サーボモータ１２が用いられる。 The capacity of the hydraulic motor 4 can be adjusted steplessly from the maximum to the minimum (zero) by shifting the speed change operation member 7 from the illustrated LOW position to the TOP position. A hydraulic servo motor 12 is used to operate this speed change operation member 7.
油圧サーボモータ１２は固定のサーボシリンダ
１３と、その内部を右側および左側油室１４，１
５に区画するサーボピストン１６と、その軸心部
を貫通するパイロツト弁１７とから構成され、サ
ーボピストン１６に前記変速操作部材７が連結さ
れる。右側油室１４には、その油圧源として前記
油圧閉回路５を油路１８を介して接続し、サーボ
ピストン１６には、パイロツト弁１７の左右動に
応じて左側油室１５を油溜１０に開放したり、両
油室１４，１５間を連通したりする排出ポート１
９および供給ポート２０を設ける。 The hydraulic servo motor 12 has a fixed servo cylinder 13, and its inside is connected to right and left oil chambers 14, 1.
The servo piston 16 is composed of a servo piston 16 divided into 5 sections, and a pilot valve 17 passing through its axial center.The servo piston 16 is connected to the speed change operating member 7. The hydraulic closed circuit 5 is connected to the right oil chamber 14 as its oil pressure source via an oil passage 18, and the servo piston 16 connects the left oil chamber 15 to the oil sump 10 according to the left-right movement of the pilot valve 17. Discharge port 1 that opens or communicates between both oil chambers 14 and 15
9 and a supply port 20 are provided.
したがつて、パイロツト弁１７を左右に操作す
れば、サーボピストン１６はそのパイロツト弁１
７の動きに追従するように油圧閉回路５の油圧に
より倍力作動され、それによつて変速操作部材７
をLOW位置とTOP位置間で軽快にシフトするこ
とができる。 Therefore, if the pilot valve 17 is operated to the left or right, the servo piston 16 will move the pilot valve 1
The gear shift operating member 7 is actuated by the hydraulic pressure of the hydraulic closed circuit 5 to follow the movement of the gear shift operating member 7.
can be easily shifted between the LOW and TOP positions.
パイロツト弁１７には、それを操作するため
に、逆転可能の直流モータ２１をリンク２２およ
び作動レバー２３を介して連結する。このモータ
２１には、図示しないが減速装置が内蔵されてい
る。 A reversible DC motor 21 is connected to the pilot valve 17 via a link 22 and an operating lever 23 in order to operate it. Although not shown, this motor 21 has a built-in speed reduction device.
エンジンＥの絞弁開閉装置２４には、絞弁の開
度すなわちスロツトル開度を検出しそれに応じた
電圧e1を第１電気信号として発生するスロツトル
開度検出装置２５を付設し、また入力軸１には、
エンジン回転数を検出しそれに応じた電圧e2を第
２電気信号として発生するエンジン回転数検出装
置２６を付設する。スロツトル開度検出装置２５
は電池２７と、それに接続されて絞弁開閉装置２
４に連動する可変抵抗器２８とより構成され、ま
たスロツトル開度検出装置２５は入力軸１より駆
動される遠心ガバナ２９と、電池３０と、それに
接続されて遠心ガバナ２９に連動する可変抵抗器
３１とより構成されるが、エンジン回転数検出装
置２６は、エンジンＥより駆動されてその回転数
に比例した電圧を発生する発電機より構成するこ
ともできる。 The throttle valve opening/closing device 24 of the engine E is equipped with a throttle opening detection device 25 that detects the opening of the throttle valve, that is, the throttle opening, and generates a corresponding voltage e1 as a first electric signal. In 1,
An engine speed detection device 26 is attached that detects the engine speed and generates a voltage e 2 corresponding to the engine speed as a second electrical signal. Throttle opening detection device 25
is a battery 27 and a throttle valve opening/closing device 2 connected to it.
The throttle opening detection device 25 is composed of a centrifugal governor 29 driven by the input shaft 1, a battery 30, and a variable resistor connected to the centrifugal governor 29 and linked to the centrifugal governor 29. 31, but the engine rotation speed detection device 26 can also be constructed from a generator that is driven by the engine E and generates a voltage proportional to its rotation speed.
前記第１および第２電気信号e1，e2により前記
モータ２１が制御されるもので、その制御回路を
次に第２図により説明する。 The motor 21 is controlled by the first and second electric signals e 1 and e 2 , and its control circuit will be explained next with reference to FIG. 2.
第２図の制御回路は、前記スロツトル開度検出
装置２５と、前記エンジン回転数検出装置２６
と、スロツトル開度検出装置２５で発生される第
１電気信号e1の伝達を遅延させる遅延回路３２
と、スロツトル開度検出装置２５で発生される第
１電気信号e1の量とエンジン回転数検出装置２６
で発生される第２電気信号e2の量との差を計り、
それらに差があるときのみその差の正、負値に対
応した正、負値をもつ出力信号ｅを発生する差動
回路３３と、その出力信号ｅにより前記モータ２
１を駆動制御する駆動回路３４とよりなつてい
る。 The control circuit in FIG. 2 includes the throttle opening detection device 25 and the engine rotation speed detection device 26.
and a delay circuit 32 that delays transmission of the first electrical signal e1 generated by the throttle opening detection device 25.
, the amount of the first electric signal e1 generated by the throttle opening detection device 25, and the engine rotation speed detection device 26.
Measure the difference between the amount of the second electrical signal e2 generated by
A differential circuit 33 generates an output signal e having positive and negative values corresponding to the positive and negative values of the difference only when there is a difference between them, and the motor 2
1, and a drive circuit 34 for driving and controlling the drive circuit 1.
前記遅延回路３２は抵孔３５とコンデンサ３６
とより構成され、それらの時定数の選定によりス
ロツトル開度検出装置２５から差動回路３３への
入力遅延時間が決定される。また前記差動回路３
３は第１および第２トランジスタ３７，３８より
構成され、前記駆動回路３４は正転用電池３９、
逆転用電池４０、正転用トランジスタ４１および
逆転用トランジスタ４２より構成され、さらに駆
動回路３４には、前記モータ２１の給電回路にモ
ータ２１と連動する回転ドグ板４３により開閉さ
れるリミツトスイツチ４４と抵抗４５とが並列に
介挿されている。 The delay circuit 32 includes a resistor 35 and a capacitor 36.
By selecting these time constants, the input delay time from the throttle opening detection device 25 to the differential circuit 33 is determined. Further, the differential circuit 3
3 is composed of first and second transistors 37 and 38, and the drive circuit 34 includes a forward rotation battery 39,
The drive circuit 34 is composed of a reverse rotation battery 40, a forward rotation transistor 41, and a reverse rotation transistor 42, and the drive circuit 34 further includes a limit switch 44 and a resistor 45, which are connected to the power supply circuit of the motor 21 and are opened and closed by a rotating dog plate 43 that interlocks with the motor 21. are inserted in parallel.
而して回転ドグ板４３は、前記パイロツト弁１
７がLOWおよびTOP位置に到達したときリミツ
トスイツチ４４を開放するようになつている。 Therefore, the rotary dog plate 43 is connected to the pilot valve 1.
7 reaches the LOW and TOP positions, the limit switch 44 is opened.
このような構成であるから、エンジンＥの作動
中には、スロツトル開度検出装置２５からの第１
電気信号e1が遅延回路３２を介して差動回路３３
に入力され、一方、エンジン回転数検出装置２６
からの第２電気信号e2も同じく差動回路３３に入
力される。 With such a configuration, when the engine E is in operation, the first signal from the throttle opening detection device 25 is
The electrical signal e1 is sent to the differential circuit 33 via the delay circuit 32.
On the other hand, the engine rotation speed detection device 26
The second electrical signal e 2 from the .
そこで、エンジンを加速すべくスロツトル開度
を増加させれば第１電気信号e1の量が増加するの
で、第１トランジスタ３７のベース電圧が上昇し
て、そのエミツタの電位も上昇し、それに伴い第
２トランジスタ３８のコレクタ電位も上昇する。
一方、負荷の減少等によりエンジン回転数が上昇
すれば第２電気信号e2の量が増加するので、第２
トランジスタ３８のベース電圧が上昇し、そのコ
レクタ側の電位が下がる。したがつて、第２トラ
ンジスタ３８のコレクタ電位ｅは、
ｅ＝（ｋ（e1−e2）但し、ｋは増幅係数
となり、それが駆動回路３４に入力される。 Therefore, if the throttle opening is increased in order to accelerate the engine, the amount of the first electric signal e1 will increase, so the base voltage of the first transistor 37 will rise, and the potential of its emitter will also rise, and accordingly. The collector potential of the second transistor 38 also rises.
On the other hand, if the engine speed increases due to a decrease in load, etc., the amount of the second electric signal e 2 will increase, so the second
The base voltage of transistor 38 increases, and the potential on its collector side decreases. Therefore, the collector potential e of the second transistor 38 is: e=(k(e 1 −e 2 )) where k is an amplification coefficient, which is input to the drive circuit 34 .
そして、ｅが正の値をもつとき、すなわちe1＞
e2のときは、正転用トランジスタ４１が導通し、
モータ２１は正転用電池３９から供電されて正転
し、パイロツト弁１７を右方へ押動するので、前
述のように変速操作部材７がLOW位置に向けて
シフトされ、それに応じて変速機の変速比は増大
される。 And when e has a positive value, that is, e 1 >
When e 2 , the forward rotation transistor 41 conducts;
The motor 21 is supplied with power from the forward rotation battery 39 and rotates in the forward direction, pushing the pilot valve 17 to the right, so that the speed change operation member 7 is shifted toward the LOW position as described above, and the transmission is accordingly adjusted. The transmission ratio is increased.
一方、ｅが負の値をもつとき、すなわちe1＜e2
のときは、逆転用トランジスタ４２が導通し、モ
ータ２１は逆転用電池４０から供電されて逆転
し、パイロツト弁１７を左方へ牽引するので、今
度は変速操作部材７がTOP位置に向けてシフト
され、それに応じて変速機Ｔの変速比は減少す
る。 On the other hand, when e has a negative value, that is, e 1 < e 2
At this time, the reversing transistor 42 becomes conductive, and the motor 21 is supplied with power from the reversing battery 40 to reverse the rotation and pull the pilot valve 17 to the left, so that the speed change operation member 7 is now shifted toward the TOP position. The gear ratio of the transmission T decreases accordingly.
このような変速作用の結果、第１電気信号e1と
第２電気信号e2とが第３図の関係を満たせばe1＝
e2となつて、差動回路３３の出力は消えるため、
正転用および逆転用トランジスタ４１，４２は共
に遮断状態となり、モータ２１を直ちに停止して
変速操作部材７をその位置に保持する。したがつ
て、スロツトル開度が決定されると、負荷変動に
応じ変速機Ｔの変速比が自動的に変化し、そのス
ロツトル開度に対応したエンジン回転数が自動的
に得られる。 As a result of such a speed change action, if the first electrical signal e 1 and the second electrical signal e 2 satisfy the relationship shown in FIG. 3, then e 1 =
e 2 and the output of the differential circuit 33 disappears, so
Both the forward rotation transistors 41 and 42 are cut off, and the motor 21 is immediately stopped and the speed change operation member 7 is held at that position. Therefore, when the throttle opening degree is determined, the gear ratio of the transmission T is automatically changed in accordance with the load fluctuation, and the engine speed corresponding to the throttle opening degree is automatically obtained.
ところで、若しスロツトル開度検出装置２５か
らの第１電気信号e1が遅延されず直ちに差動回路
３３に送られると、スロツトル開度を急激に増加
させる急加速操作時には、差動回路３３から一瞬
大なる正の値の出力が生じ、変速機Ｔに急激な減
速操作が加えられ、エンジンがオーバーランする
等の不都合を生じるところであるが、前述のよう
に第１電気信号e1を遅延回路３２で遅延させて差
動回路３３へ送ることによつて上記のような不都
合が回避され、快適な急加速運転が可能になる。 By the way, if the first electric signal e1 from the throttle opening detection device 25 is not delayed and is immediately sent to the differential circuit 33, then during a sudden acceleration operation that rapidly increases the throttle opening, the first electric signal e1 from the differential circuit 33 will be sent to the differential circuit 33. A momentary large positive value output is generated, which causes a sudden deceleration operation to be applied to the transmission T , causing problems such as engine overrun. By delaying the signal at step 32 and sending it to the differential circuit 33, the above-mentioned inconvenience is avoided, and comfortable rapid acceleration operation becomes possible.
また前記変速作用により変速操作部材７が
LOW位置、或はTOP位置までシフトされゝば、
変速操作部材７と連動する回転ドグ板４３がその
状態を感知してリミツトスイツチ４４を開放する
ので、モータ２１への供電量が抵抗４５により制
限され、過電流によるモータ２１の焼損を防ぐと
共に変速操作部材７に無理な操作力が働くことを
防ぐことができる。 Also, due to the speed change action, the speed change operation member 7 is
If it is shifted to the LOW position or the TOP position,
Since the rotary dog plate 43 interlocked with the speed change operation member 7 senses this state and opens the limit switch 44, the amount of power supplied to the motor 21 is limited by the resistor 45, preventing burnout of the motor 21 due to overcurrent and preventing speed change operation. It is possible to prevent excessive operating force from acting on the member 7.
以上のように本発明によれば、スロツトル開度
検出装置から発生される第１電気信号とエンジン
回転数検出装置から発生される第２電気信号との
量の差を差動回路で計り、その差の正、負値に応
じて、駆動回路の変速操作部材操作用モータを
正、逆転するようにしたので、第１および第２電
気信号が互いに拮抗するよう無段変速が自動的に
行われ、その結果、スロツトル開度とエンジン回
転数との関係を負荷変動に拘らず常に所定の比例
関係に保つことができ、車輌の経済的運行を図
り、燃料の消費量を低減し得るのみならず、乗員
に不快な変速シヨツクを与えることも全くなく、
乗心地を良好にすることができる。 As described above, according to the present invention, the difference in amount between the first electric signal generated from the throttle opening detection device and the second electric signal generated from the engine rotation speed detection device is measured by the differential circuit, and Since the motor for operating the speed change operating member of the drive circuit is made to rotate in the positive or reverse direction depending on the positive or negative value of the difference, continuously variable speed is automatically performed so that the first and second electric signals are counterbalanced with each other. As a result, the relationship between the throttle opening and engine speed can always be maintained in a predetermined proportional relationship regardless of load fluctuations, which not only makes it possible to operate the vehicle economically and reduce fuel consumption. , there is no uncomfortable gear shifting shock for the passengers,
Riding comfort can be improved.
また、スロツトル開度検出装置からの第１電気
信号を一定時間遅延させて差動回路へ伝達させる
遅延回路を設けたので、エンジンの急加速操作時
でも、変速機に急激な減速が生起してエンジンが
オーバーランするような不都合を未然に防止で
き、快適な加速運転状態を自動的に得ることがで
きる。 In addition, we have provided a delay circuit that delays the first electrical signal from the throttle opening detection device for a certain period of time before transmitting it to the differential circuit, so even when the engine is suddenly accelerating, sudden deceleration will not occur in the transmission. Inconveniences such as engine overrun can be prevented, and comfortable acceleration driving conditions can be automatically obtained.
第１図は本発明装置の全体系統図、第２図はそ
の電気制御回路図、第３図は本発明によるスロツ
トル開度とエンジン回転数との関係線図である。
７……変速操作部材、２１……モータ、２５…
…スロツトル開度検出装置、２６……エンジン回
転数検出装置、３２……遅延回路、３３……差動
回路、３４……駆動回路、Ｅ……エンジン、Ｔ…
…無段変速機、ｅ……差動回路の出力信号、e1…
…第１電気信号、e2……第２電気信号。
FIG. 1 is an overall system diagram of the apparatus of the present invention, FIG. 2 is an electrical control circuit diagram thereof, and FIG. 3 is a diagram showing the relationship between throttle opening and engine speed according to the present invention. 7... Speed change operation member, 21... Motor, 25...
...Throttle opening detection device, 26...Engine rotation speed detection device, 32...Delay circuit, 33...Differential circuit, 34...Drive circuit, E...Engine, T...
...Continuously variable transmission, e...Output signal of differential circuit, e 1 ...
...first electric signal, e 2 ...second electric signal.
Claims (1)
電気信号e1を発生するスロツトル開度検出装置２
５と；エンジン回転数を検出してそれに応じた第
２電気信号e2を発生するエンジン回転数検出装置
２６と；前記第１電気信号e1の量と前記第２電気
信号e2の量との差を計り、それらに差があるとき
のみその差の正、負値に対応した正、負値をもつ
信号ｅを発生する差動回路３３と；前記スロツト
ル開度検出装置２５と前記差動回路３３との間に
介装され前記第１電気信号e1の差動回路３３への
伝達を遅延させる遅延回路３２と；無段変速機の
変速操作部材７に連動連結し正、逆転によりその
変速操作部材７を減、増速方向へ連続的に作動し
得るモータ２１を有し、前記差動回路３３の出力
信号ｅを入力されると、その正、負値に応じて前
記モータ２１を正、逆転するように構成した駆動
回路３４と；よりなる、車輌用無段変速機の自動
制御装置。1 The throttle opening is detected and the first
Throttle opening detection device 2 that generates electrical signal e1
5; an engine rotation speed detection device 26 that detects the engine rotation speed and generates a second electric signal e 2 corresponding thereto; an amount of the first electric signal e 1 and an amount of the second electric signal e 2 ; a differential circuit 33 that measures the difference between the two and generates a signal e having a positive or negative value corresponding to the positive or negative value of the difference only when there is a difference; a delay circuit 32 interposed between the circuit 33 and the delay circuit 32 for delaying the transmission of the first electric signal e1 to the differential circuit 33; It has a motor 21 that can continuously operate the speed change operation member 7 in the direction of decreasing and increasing the speed, and when the output signal e of the differential circuit 33 is input, the motor 21 is operated in accordance with the positive or negative value of the output signal e of the differential circuit 33. An automatic control device for a continuously variable transmission for a vehicle, comprising a drive circuit 34 configured to rotate forward and reverse.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8455978A JPS5514312A (en) | 1978-07-13 | 1978-07-13 | Stepless speed variation automatic controller for vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8455978A JPS5514312A (en) | 1978-07-13 | 1978-07-13 | Stepless speed variation automatic controller for vehicle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5514312A JPS5514312A (en) | 1980-01-31 |
| JPS6158702B2 true JPS6158702B2 (en) | 1986-12-12 |
Family
ID=13833991
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8455978A Granted JPS5514312A (en) | 1978-07-13 | 1978-07-13 | Stepless speed variation automatic controller for vehicle |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5514312A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0461964B2 (en) * | 1986-06-17 | 1992-10-02 | Honda Motor Co Ltd |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5943940A (en) * | 1982-09-03 | 1984-03-12 | Komatsu Ltd | Over-revolution preventing apparatus for hydraulically-driven car |
| JPH086797B2 (en) * | 1986-07-15 | 1996-01-29 | 本田技研工業株式会社 | Shift control method for continuously variable transmission for vehicle |
| EP0254579B1 (en) * | 1986-07-23 | 1992-03-11 | Honda Giken Kogyo Kabushiki Kaisha | Hydraulically operated continuously variable transmission |
| US4838024A (en) * | 1986-11-19 | 1989-06-13 | Honda Giken Kogyo Kabushiki Kaisha | Hydraulically operated continuously variable transmission |
| JPS63149470A (en) * | 1986-12-12 | 1988-06-22 | Honda Motor Co Ltd | Hydraulic continuously variable transmission |
| US5166877A (en) * | 1987-10-02 | 1992-11-24 | Honda Giken Kogyo Kabushiki Kaisha | Method of speed reduction ratio control in continuously variable speed transmission |
| US4941371A (en) * | 1987-10-20 | 1990-07-17 | Honda Giken Kogyo Kabushiki Kaisha | Hydraulic continuously variable speed transmission with direct clutch valve |
| EP0321622A1 (en) * | 1987-12-23 | 1989-06-28 | Honda Giken Kogyo Kabushiki Kaisha | Apparatus for controlling continuously variable automotive transmission |
| JP2819532B2 (en) * | 1987-12-28 | 1998-10-30 | 株式会社島津製作所 | Deceleration control device for continuously variable transmission |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5294981A (en) * | 1976-02-04 | 1977-08-10 | Takayuki Miyao | Brake device for stepless speed changer |
| JPS5364164A (en) * | 1976-11-19 | 1978-06-08 | Honda Motor Co Ltd | Automatic controller for a car having an engine |
-
1978
- 1978-07-13 JP JP8455978A patent/JPS5514312A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5294981A (en) * | 1976-02-04 | 1977-08-10 | Takayuki Miyao | Brake device for stepless speed changer |
| JPS5364164A (en) * | 1976-11-19 | 1978-06-08 | Honda Motor Co Ltd | Automatic controller for a car having an engine |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0461964B2 (en) * | 1986-06-17 | 1992-10-02 | Honda Motor Co Ltd |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5514312A (en) | 1980-01-31 |
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