JPH0130649B2 - - Google Patents
Info
- Publication number
- JPH0130649B2 JPH0130649B2 JP57026829A JP2682982A JPH0130649B2 JP H0130649 B2 JPH0130649 B2 JP H0130649B2 JP 57026829 A JP57026829 A JP 57026829A JP 2682982 A JP2682982 A JP 2682982A JP H0130649 B2 JPH0130649 B2 JP H0130649B2
- Authority
- JP
- Japan
- Prior art keywords
- engine
- transmission
- overrun
- speed
- hydraulic
- 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
- 230000005540 biological transmission Effects 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 4
- 238000013459 approach Methods 0.000 claims description 3
- 230000009347 mechanical transmission Effects 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 230000007935 neutral effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P23/00—Arrangements or methods for the control of AC motors characterised by a control method other than vector control
- H02P23/16—Controlling the angular speed of one shaft
Description
【発明の詳細な説明】
本発明は、エンジンにて駆動され、１つの入力
軸を有し、主として装軌車両に用いられる油圧機
械式変速及び操向機のオーバラン防止制御方法に
関するもので、その目的とするところは、エンジ
ンブレーキを働かせているときのエンジンのオー
バランを自動制御により防止できるようにしたエ
ンジンオーバラン防止制御方法を提供することに
ある。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an overrun prevention control method for a hydromechanical transmission and steering gear that is driven by an engine, has one input shaft, and is mainly used in tracked vehicles. An object of the present invention is to provide an engine overrun prevention control method that can automatically control engine overruns when engine braking is applied.
以下本発明の実施態様を図面を参照して説明す
る。 Embodiments of the present invention will be described below with reference to the drawings.
図中１はエンジン２に連結した１つの入力軸３
と２つ（左右）の出力軸４，５を有する機械式の
変速装置、６，７はエンジン２にて駆動される２
つ（左右）の油圧ポンプ、８，９は各油圧ポンプ
の吐出油にて駆動される油圧モータであり、この
両モータ８，９の出力軸は上記変速装置１に連結
してあり、この油圧モータ８，９の制御により変
速装置１は各速度段内で無段階に変速されるよう
になつている。変速装置１には１速用クラツチ
Ａ、２速用クラツチＢ、３速用クラツチＣ、４速
用クラツチＤがあり、それぞれを油圧力にて選択
的に作動することにより出力軸４，５の回転数が
１速〜４速に変速されるようになつている。 In the figure, 1 is one input shaft 3 connected to the engine 2.
and a mechanical transmission having two (left and right) output shafts 4 and 5, 6 and 7 are 2 driven by the engine 2.
The two (left and right) hydraulic pumps, 8 and 9, are hydraulic motors driven by the discharge oil of each hydraulic pump, and the output shafts of both motors 8 and 9 are connected to the transmission 1, and the hydraulic By controlling the motors 8 and 9, the transmission 1 is configured to be continuously changed within each speed stage. The transmission 1 has a clutch A for 1st speed, a clutch B for 2nd speed, a clutch C for 3rd speed, and a clutch D for 4th speed, and by selectively operating each of them with hydraulic pressure, the output shafts 4 and 5 are controlled. The rotational speed is changed from 1st speed to 4th speed.
１１はエンジン２の回転数を制御するスロツト
ル位置を検出してこれの信号ａをとり出すスロツ
トル位置検出器、１２は車両を旋回させるための
ハンドルの旋回角度を検出してこれの信号ｂをと
り出すハンドル角検出器、１３はチエンジレバー
の前進、後進、中立、超信地旋回の４種の位置を
検出してそれぞれに応じた信号ｃをとり出すチエ
ンジレバー位置検出器、１４はエンジンブレーキ
をかけるための信号ｄをとり出すエンジンブレー
キスイツチ、１５は実際のエンジン回転数による
エンジン回転数信号nEを取り出すエンジン回転数
検出器、１６，１７は各油圧モータ８，９の回転
数信号nn1，nn2を取り出すモータ回転数検出器、
１８，１９，２０，２１は上記１速〜４速用クラ
ツチＡ〜Ｄの油圧力を検出してそれぞれの信号
ｅ，ｆ，ｇ，ｈを取り出す油圧スイツチ、２２，
２３，２４，２５は上記１速〜４速用クラツチＡ
〜Ｄを制御するそれぞれのクラツチ切換スイツ
チ、２６，２７は両ポンプ６，７の吐出量制御ア
クチエータである。２８は制御論理回路であり、
この回路２８は上記各信号ａ〜ｈ及びnE，nn1，
nn2が入力することにより、この入力信号に応じ
て両ポンプ６，７の吐出量制御アクチエータ２
６，２７に信号ｉ，ｊを、また各クラツチ切換ス
イツチ２２〜２５に信号ｋ，ｌ，ｍ，ｎを出すよ
うになつている。 11 is a throttle position detector that detects the throttle position for controlling the rotational speed of the engine 2 and takes out a signal a from this, and 12 detects a turning angle of a steering wheel for turning the vehicle and takes out a signal b from this. 13 is a change lever position detector that detects the four positions of the change lever: forward, reverse, neutral, and super turning, and outputs a signal c corresponding to each position; 14 is a change lever position detector that detects the engine brake. 15 is an engine rotation speed detector that takes out an engine rotation speed signal n E based on the actual engine rotation speed; 16 and 17 are rotation speed signals n n1 of each hydraulic motor 8 and 9; ,n Motor rotation speed detector to take out n2 ,
18, 19, 20, and 21 are hydraulic switches that detect the hydraulic pressure of the clutches A to D for the first to fourth speeds and take out the respective signals e, f, g, h; 22;
23, 24, 25 are the clutches A for 1st to 4th speeds.
The clutch changeover switches 26 and 27 that control the pumps 6 and 7 are actuators for controlling the discharge amount of both the pumps 6 and 7. 28 is a control logic circuit;
This circuit 28 receives each of the above-mentioned signals a to h and n E , n n1 ,
By inputting n n2 , the discharge amount control actuator 2 of both pumps 6 and 7 responds to this input signal.
6 and 27, and signals k, l, m, and n are output to each clutch selector switch 22-25.
以下に本発明方法における作用及び各作用にお
ける制御論理回路の具体的実施例を示す。 Below, specific examples of actions in the method of the present invention and control logic circuits for each action will be shown.
エンジンブレーキを働かせているときにはエン
ジンがオーバランする危険があるため、自動制御
によりオーバランを防止し、運転の容易化を図
る。 Since there is a risk of the engine overrunning when the engine brake is applied, automatic control is used to prevent overrun and make driving easier.
以下その実施態様を第２図を参照して説明す
る。 The embodiment will be described below with reference to FIG.
オーバラン限界回転数NEOを制御論理回路２８
に記憶させておき、このオーバラン限界回転数
NEOとエンジン回転数検出器１５からのエンジン
回転数信号nEとを比較演算してオーバラン信号I8
を出す。そしてこの信号I8とそのときの油圧スイ
ツチ１８〜２１からの信号とにより、nE＞NEOに
なつたら（nE−NEO）がゼロに近づく方向になる
ように上記オーバラン信号I8がポンプ６，７のア
クチエータ２６，２７に対する出力信号ｉ，ｊに
加算器１０１，１０２を介して加算される。 Logic circuit 28 that controls overrun limit rotation speed N EO
This overrun limit rotation speed is stored in memory.
An overrun signal I 8 is generated by comparing N EO and the engine rotation speed signal n E from the engine rotation speed detector 15.
issue. Using this signal I8 and the signals from the hydraulic switches 18 to 21 at that time, the overrun signal I8 is set such that when nE > NEO , ( nE - NEO ) approaches zero. It is added to the output signals i, j for the actuators 26, 27 of the pumps 6, 7 via adders 101, 102.
これによりエンジン回転数nEはオーバラン限界
回転数NEOに保たれ、オーバランが防止される。 As a result, the engine speed nE is maintained at the overrun limit speed NEO , and overrun is prevented.
上記加算機１０１，１０２は現在出されている
信号ｉ，ｊにオーバラン信号＋I8あるいは−8
を加える演算器である。 The adders 101 and 102 add an overrun signal + I8 or -8 to the currently output signals i and j.
It is a calculation unit that adds .
本発明は以上のようになり、制御論理回路２８
に記憶させたオーバラン限界回転数NEOとそのと
きのエンジン回転数nEとをエンジンブレーキ作動
時に比較演算してオーバラン信号I8を出し、nE＞
NEOとなつたときに、（nE−NEO）がゼロに近づく
方向になるように上記オーバラン信号I8を油圧ポ
ンプ６，７の吐出量制御アクチエータ２６，２７
に送つて車速を制御するようにしたから、エンジ
ンブレーキを働かせているときのエンジンのオー
バランを自動制御により防止でき運転の容易化を
図ることができる。 The present invention is as described above, and the control logic circuit 28
When the engine brake is activated, the overrun limit rotation speed N EO stored in the overrun limit rotation speed N EO and the engine rotation speed n E at that time are compared and calculated, and an overrun signal I 8 is generated, and n E >
When N EO occurs, the overrun signal I 8 is sent to the discharge amount control actuators 26 and 27 of the hydraulic pumps 6 and 7 so that (n E - N EO ) approaches zero.
Since the vehicle speed is controlled by sending the engine speed to the engine, engine overrun when engine braking is applied can be prevented by automatic control, making driving easier.
図面は本発明の実施態様を示すもので、第１図
は制御系統図、第２図は本発明の要部を示す説明
図である。
１は変速装置、２はエンジン、３は入力軸、
４，５は出力軸、６，７は油圧ポンプ、８，９は
油圧モータ、２６，２７は吐出量制御アクチエー
タ、２８は制御論理回路。
The drawings show embodiments of the present invention, and FIG. 1 is a control system diagram, and FIG. 2 is an explanatory diagram showing the main parts of the present invention. 1 is the transmission, 2 is the engine, 3 is the input shaft,
4 and 5 are output shafts, 6 and 7 are hydraulic pumps, 8 and 9 are hydraulic motors, 26 and 27 are discharge amount control actuators, and 28 is a control logic circuit.
Claims (1)
の出力軸４，５と複数段の変速用油圧クラツチＡ
〜Ｄとを有する機械式の変速装置１と、エンジン
２にて駆動される左右の油圧ポンプ６，７とこれ
の吐出油にて駆動される左右の油圧モータ８，９
とからなり、この油圧モータ８，９の出力軸を上
記変速装置１に連結し、油圧モータ８，９の制御
により変速装置１が各速度段で無段階に変速され
るようにした油圧機械式変速及び操向機におい
て、制御論理回路２８に記憶させたオーバラン限
界回転数NEOとそのときのエンジン回転数nEとを
エンジンブレーキ作動時に比較演算してオーバラ
ン信号I8を出し、nE＞NEOとなつたときに、（nE−
NEO）がゼロに近づく方向になるように上記オー
バラン信号I8を油圧ポンプ６，７の吐出量制御ア
クチエータ２６，２７に送つて車速を制御するよ
うにしたことを特徴とする油圧機械式変速及び操
向機のエンジンオーバラン防止制御方法。1 One input shaft 3 connected to the engine 2, left and right output shafts 4 and 5, and a multi-speed hydraulic clutch A
-D, a mechanical transmission 1, left and right hydraulic pumps 6, 7 driven by the engine 2, and left and right hydraulic motors 8, 9 driven by the oil discharged from these pumps.
The output shafts of the hydraulic motors 8 and 9 are connected to the transmission 1, and the transmission 1 is controlled by the hydraulic motors 8 and 9 so that the transmission 1 can be changed steplessly at each speed stage. In the transmission and steering gear, the overrun limit rotational speed NEO stored in the control logic circuit 28 and the engine rotational speed nE at that time are compared and calculated when the engine brake is activated, and an overrun signal I8 is generated, and nE > When N EO becomes (n E −
A hydromechanical transmission characterized in that the vehicle speed is controlled by sending the overrun signal I8 to the discharge amount control actuators 26 and 27 of the hydraulic pumps 6 and 7 so that N EO ) approaches zero. and a control method for preventing engine overrun of a steering gear.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57026829A JPS58145527A (en) | 1982-02-23 | 1982-02-23 | Overspeed preventive control method of hydraulically operated speed changer and steering machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57026829A JPS58145527A (en) | 1982-02-23 | 1982-02-23 | Overspeed preventive control method of hydraulically operated speed changer and steering machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58145527A JPS58145527A (en) | 1983-08-30 |
| JPH0130649B2 true JPH0130649B2 (en) | 1989-06-21 |
Family
ID=12204153
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57026829A Granted JPS58145527A (en) | 1982-02-23 | 1982-02-23 | Overspeed preventive control method of hydraulically operated speed changer and steering machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58145527A (en) |
-
1982
- 1982-02-23 JP JP57026829A patent/JPS58145527A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58145527A (en) | 1983-08-30 |
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