JPS6236889B2 - - Google Patents
Info
- Publication number
- JPS6236889B2 JPS6236889B2 JP56080286A JP8028681A JPS6236889B2 JP S6236889 B2 JPS6236889 B2 JP S6236889B2 JP 56080286 A JP56080286 A JP 56080286A JP 8028681 A JP8028681 A JP 8028681A JP S6236889 B2 JPS6236889 B2 JP S6236889B2
- Authority
- JP
- Japan
- Prior art keywords
- vehicle speed
- speed
- overdrive
- timer
- vehicle
- 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
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K31/00—Vehicle fittings, acting on a single sub-unit only, for automatically controlling vehicle speed, i.e. preventing speed from exceeding an arbitrarily established velocity or maintaining speed at a particular velocity, as selected by the vehicle operator
- B60K31/06—Vehicle fittings, acting on a single sub-unit only, for automatically controlling vehicle speed, i.e. preventing speed from exceeding an arbitrarily established velocity or maintaining speed at a particular velocity, as selected by the vehicle operator including fluid pressure actuated servomechanism in which the vehicle velocity affecting element is actuated by fluid pressure
- B60K31/10—Vehicle fittings, acting on a single sub-unit only, for automatically controlling vehicle speed, i.e. preventing speed from exceeding an arbitrarily established velocity or maintaining speed at a particular velocity, as selected by the vehicle operator including fluid pressure actuated servomechanism in which the vehicle velocity affecting element is actuated by fluid pressure and means for comparing one electrical quantity, e.g. voltage, pulse, waveform, flux, or the like, with another quantity of a like kind, which comparison means is involved in the development of a pressure which is fed into the controlling means
- B60K31/102—Vehicle fittings, acting on a single sub-unit only, for automatically controlling vehicle speed, i.e. preventing speed from exceeding an arbitrarily established velocity or maintaining speed at a particular velocity, as selected by the vehicle operator including fluid pressure actuated servomechanism in which the vehicle velocity affecting element is actuated by fluid pressure and means for comparing one electrical quantity, e.g. voltage, pulse, waveform, flux, or the like, with another quantity of a like kind, which comparison means is involved in the development of a pressure which is fed into the controlling means where at least one electrical quantity is set by the vehicle operator
- B60K31/105—Vehicle fittings, acting on a single sub-unit only, for automatically controlling vehicle speed, i.e. preventing speed from exceeding an arbitrarily established velocity or maintaining speed at a particular velocity, as selected by the vehicle operator including fluid pressure actuated servomechanism in which the vehicle velocity affecting element is actuated by fluid pressure and means for comparing one electrical quantity, e.g. voltage, pulse, waveform, flux, or the like, with another quantity of a like kind, which comparison means is involved in the development of a pressure which is fed into the controlling means where at least one electrical quantity is set by the vehicle operator in a memory, e.g. a capacitor
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Control Of Driving Devices And Active Controlling Of Vehicle (AREA)
- Controls For Constant Speed Travelling (AREA)
- Control Of Velocity Or Acceleration (AREA)
Description
【発明の詳細な説明】
本発明は、通称オートドライブ又はスピードコ
ントロールと呼ばれる自動車用速度制御装置に関
するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a speed control device for an automobile, commonly called an autodrive or speed control.
自動車用速度制御装置は、運転中に希望の車速
にセツトするとアクセルペダルを踏まなくてもス
ロツトル開度を自動的に制御して車速を一定速度
に保つ機能を有するものであるが、例えば５％勾
配程度の長い上り坂をオーバードライブ走行する
ような場合には、スロツトル開度を一杯にしても
車速が徐々に低下するので、希望の設定車速で定
速走行することができなくなる。このため、ある
種の自動車用速度制御装置においては、上り坂で
の車速低下を防止するため車速が設定車速より所
定速度たとえば７Km／ｈ程度だけ低下したときに
オーバードライブの解除を行なつてミツシヨンを
例えば４速から３速に自動的に切替えて車速を回
復させ、車速がほぼ設定車速たとえば−３Km／ｈ
近辺まで復帰したときオーバードライブの再開を
行なうようにして、長い上り坂においても定行速
行を可能ならしめている。 Automotive speed control devices have the function of automatically controlling the throttle opening to maintain a constant vehicle speed without pressing the accelerator pedal when the desired vehicle speed is set while driving. When driving in overdrive on an uphill slope with a long slope, the vehicle speed gradually decreases even when the throttle opening is fully opened, making it impossible to drive at a constant speed at the desired set vehicle speed. For this reason, in some types of automobile speed control devices, overdrive is canceled when the vehicle speed drops by a predetermined speed, for example, about 7 km/h, from the set vehicle speed in order to prevent the vehicle speed from decreasing on uphill slopes. Automatically switches from 4th gear to 3rd gear to recover the vehicle speed, and the vehicle speed is almost the set vehicle speed, for example -3km/h.
When the vehicle returns to the vicinity, overdrive is restarted, making it possible to drive at a steady speed even on long uphill slopes.
しかしながら、このような方法に依ると、上り
坂の勾配によつてはオーバードライブから次段の
ミツシヨンへの切換周期またはその反対の切換の
周期が極端に短くなることがあり、車速が頻繁に
変更される結果乗り心地が非常に悪くなつてしま
う。本来、自動車用速度制御装置は、高速、長時
間運転時の疲労を軽減できることが最大のメリツ
トになつているのであるから、上記のように乗り
心地が悪くなるような事態は極力防止する必要が
ある。このような問題を改善する方法として、例
えば上り勾配時にオーバードライブの解除を行な
つて常時１段下のミツシヨンで走行を続けること
が考えられるが、上り勾配であるか否か及びその
勾配率を検出して自動的にオーバードライブの解
除を行なうことは技術的に困難であり、且つ常時
１段下のミツシヨンで走行するから燃費が悪く経
済的でないという欠点がある。 However, with this method, depending on the slope of the uphill slope, the switching cycle from overdrive to the next transmission or vice versa may become extremely short, resulting in frequent changes in vehicle speed. As a result, the ride becomes very uncomfortable. Originally, the greatest benefit of automotive speed control devices is their ability to reduce fatigue during high-speed, long-duration driving, so it is necessary to prevent situations where the ride becomes uncomfortable as described above. be. One way to improve this problem is, for example, to release the overdrive when going uphill and continue driving at the one gear lower transmission. It is technically difficult to detect and automatically release the overdrive, and there is also a drawback that the vehicle is always driven at the one gear lower transmission, resulting in poor fuel efficiency and uneconomical performance.
本発明はこのような事情に鑑みて為されたもの
であり、その目的は、簡単な構成で且つ燃費を極
力抑えながら上に勾配の走行路においてもできる
限り乗り心地良く定速走行し得るようにすること
にある。本発明は、車速変化の周期がほぼ30秒以
上であれば満足する乗心地が得られるという経験
的事実に着目して為されたものであり、本発明の
上記目的は、上り坂での車速低下をオーバードラ
イブの解除と再開とによつて防止するようにした
自動車用速度制御装置に対し、車速が低下したと
きリセツトされ車速がほぼ設定車速に復帰したと
きセツトされるタイマを設け、車速が設定車速に
復帰してもこのタイマの設定時間だけオーバード
ライブの再開を遅らせることにより達成される。
以下実施例について詳細に説明する。 The present invention has been made in view of the above circumstances, and its purpose is to provide a vehicle with a simple structure that can drive at a constant speed with as much comfort as possible even on an upwardly sloping road while minimizing fuel consumption. It is to make it. The present invention has been made based on the empirical fact that a satisfactory ride can be obtained if the period of vehicle speed change is approximately 30 seconds or more. For an automobile speed control device that prevents a decrease in vehicle speed by canceling and resuming overdrive, a timer is provided that is reset when the vehicle speed decreases and is set when the vehicle speed has almost returned to the set vehicle speed. This is achieved by delaying the restart of the overdrive by the time set by this timer even if the vehicle speed returns to the set speed.
Examples will be described in detail below.
図は本発明実施例装置の要部ブロツク図であ
り、１００はＦ―Ｖ変換器、１０１は加算器、１
０２はアナログメモリ回路、１０３はアナログス
イツチ、１０４は進角補償回路、１０５，１０６
はアンプ、１０７は負圧式アクチユエータ、１０
８はそのコントロールバルブ用コイル、１０９，
１１０は比較回路、１１１，１１２はその基準電
圧、１１３はフリツプフロツプ、１１４はタイ
マ、１１５はインバータ、１１６はオーバードラ
イブ起動・解除部、１１７はそのオーバードライ
ブカツト用コイル、ａ〜ｄは各部の信号である。 The figure is a block diagram of the main parts of the device according to the present invention, in which 100 is an F-V converter, 101 is an adder, 1
02 is an analog memory circuit, 103 is an analog switch, 104 is a lead angle compensation circuit, 105, 106
is an amplifier, 107 is a negative pressure actuator, 10
8 is the control valve coil, 109,
110 is a comparison circuit, 111 and 112 are its reference voltages, 113 is a flip-flop, 114 is a timer, 115 is an inverter, 116 is an overdrive activation/cancellation unit, 117 is an overdrive cut coil, and a to d are signals of each part. It is.
同図において、車速信号がＦ―Ｖ変換器１００
により車速相当電圧ａに変換されて加算器１０１
の一方の入力端子に加えられ、この加算器１０１
でアナログメモリ回路１０２の出力電圧ｂと図示
の極性で加算される。アナログメモリ回路１０２
には、セツトスイツチ（図示せず）と連動するア
ナログスイツチ１０３のオン時における車速相当
平均電圧が設定車速として記憶されており、従つ
て加算器１０１の出力は現時点の車速と定速走行
を希望する設定車速との差に相当する電圧、即ち
誤差速度相当電圧ｃを表わすものとなる。この誤
差速度相当電圧ｃは、制御系の有するヒステリシ
ス特性の補償を行なう進角補償回路１０４及びア
ンプ１０５を介して負圧式アクチユエータ１０７
内のコントロールバルブ用コイル１０８にその制
御用信号ｄとして加えられ、所定の定速走行制御
が行なわれる。即ち、公知の如く、制御用信号ｄ
のデユーテイ比に応じてアクチユエータ内にエン
ジン負圧が導入されて内部負圧が定められ、この
負圧によるアクチユエータ発生力によつてアクセ
ルリンクが駆動されて車速が設定車速になるよう
に制御されるものである。尚、アクチユエータは
モータ方式採用のものであつても良いことは勿論
のことである。 In the figure, the vehicle speed signal is transmitted to the F-V converter 100.
is converted into a vehicle speed equivalent voltage a by adder 101
is added to one input terminal of this adder 101.
is added to the output voltage b of the analog memory circuit 102 with the polarity shown. Analog memory circuit 102
, the average voltage corresponding to the vehicle speed when the analog switch 103 that is linked to the set switch (not shown) is turned on is stored as the set vehicle speed, and therefore the output of the adder 101 is the current vehicle speed and the desired constant speed driving. This represents a voltage corresponding to the difference from the set vehicle speed, that is, an error speed equivalent voltage c. This error speed equivalent voltage c is applied to a negative pressure actuator 107 via an advance angle compensation circuit 104 and an amplifier 105 that compensate for the hysteresis characteristic of the control system.
The control signal d is applied to the control valve coil 108 in the control valve, and a predetermined constant speed running control is performed. That is, as is well known, the control signal d
Engine negative pressure is introduced into the actuator according to the duty ratio of the engine to determine the internal negative pressure, and the force generated by the actuator due to this negative pressure drives the accelerator link and controls the vehicle speed to the set vehicle speed. It is something. It goes without saying that the actuator may be of a motor type.
また比較回路１０９において加算器１０１から
の誤差速度相当電圧ｃとオーバードライブを解除
すべき低下速度として予め定められた第１の速度
たとえば約７Km／ｈに相当する電圧に設定された
基準電圧１１１とが比較されて、現車速が設定車
速より約７Km／ｈ程度低下したか否かが検出さ
れ、低下したときにフリツプフロツプ１１３がセ
ツトされる。フリツプフロツプ１１３のセツト出
力は、アンプ１０６を介してオーバードライブ起
動・解除部１１６のオーバードライブカツト用コ
イル１１７に加えられており、このオーバードラ
イブ起動・停止部１１６例えばオーバードライブ
から３速への切替を電磁クラツチで行なうオート
トランスミツシヨン車（AT車）においてみられ
るように入力信号の状態に応じてオーバードライ
ブの解除と再開を行なうものであり、フリツプフ
ロツプ１１３がセツトされたときオーバードライ
ブカツト用コイル１１７がオンになつてオーバー
ドライブの解除が行なわれる。従つて、上り坂で
低下した車速は漸次増大されることになる。 Further, in the comparator circuit 109, the error speed equivalent voltage c from the adder 101 and a reference voltage 111 set to a voltage corresponding to a first speed predetermined as a decreasing speed at which overdrive should be canceled, for example, about 7 km/h, are combined. It is detected whether the current vehicle speed has decreased by approximately 7 km/h from the set vehicle speed, and when the current vehicle speed has decreased, the flip-flop 113 is set. The set output of the flip-flop 113 is applied to an overdrive cut coil 117 of an overdrive start/stop section 116 via an amplifier 106. As seen in automatic transmission vehicles (AT vehicles) using an electromagnetic clutch, overdrive is released and restarted according to the state of the input signal, and when flip-flop 113 is set, overdrive cut coil 117 is activated. is turned on and overdrive is released. Therefore, the vehicle speed that has decreased on the uphill slope will be gradually increased.
次に、車速が増大してほぼ設定車速に達する
と、このことが例えば予め定められた第２の速度
である約３Km／ｈ相当電圧に設定された基準電圧
１１２と誤差速度相当電圧ｃとの比較を行なう比
較回路１１０において検出され、その出力により
タイマ１１４がセツトされる。タイマ１１４は、
セツト後約１５秒程度の設定時間の経過後にその
出力を“１”にしてフリツプフロツプ１１３をリ
セツトするように設定されており、このため車速
がほぼ設定車速に復帰しても従来のように即座に
オーバードライブの再開は行なわれず、タイマ１
１４の設定時間だけ経過した後に始めてフリツプ
フロツプ１１３がリセツトされ、オーバードライ
ブカツト用コイイル１１７がオフとなつてオーバ
ードライブの再開が行なわれるものとなる。道路
勾配によつて多少相違するけれども、一般にタイ
マ１１４の設定時間を約15秒程度に設定しておけ
ば、車速の減少、増加時間を含めた車速変化の一
周期はほぼ30秒以上となるので、車速の頻繁な変
動による乗り心地の悪化は避けられるものとな
る。また、常時オーバードライブを解除して走行
するものでないから、燃費の節約にもなるもので
ある。尚、タイマ１１４は車速が設定車速より約
３Km／ｈ程度低下したときにインバータ１１５の
出力によつてリセツトされる。このリセツト機能
がなければ例えば車速が約３Km／ｈ低下し直ちに
復帰したときタイマ１１４がセツトされるので、
その後に約７Km／ｈ低下してシフトダウンが行わ
れると増速中にタイマ１１４から“１”出力が発
生し、増速中であるにもかかわらずフリツプフロ
ツプ１１３がリセツトされるという不都合が生じ
てしまう。その点、３Km／ｈ低下でタイマ１１４
をリセツトするようにしておけばこのような不都
合は起こらず非常に有利である。 Next, when the vehicle speed increases and almost reaches the set vehicle speed, this causes a difference between the reference voltage 112, which is set to a voltage corresponding to a predetermined second speed of approximately 3 km/h, and the error speed equivalent voltage c. It is detected in a comparison circuit 110 that performs comparison, and a timer 114 is set by its output. The timer 114 is
It is set to reset the flip-flop 113 by setting its output to "1" after a set time of about 15 seconds has elapsed after the setting, so that even if the vehicle speed returns to almost the set vehicle speed, it will not work immediately like in the past. Overdrive is not restarted and timer 1
Only after the set time of 14 has elapsed, the flip-flop 113 is reset, the overdrive cut coil 117 is turned off, and the overdrive is restarted. Although it varies somewhat depending on the road slope, if the timer 114 is generally set to about 15 seconds, one cycle of vehicle speed change, including the time for decreases and increases in vehicle speed, will be approximately 30 seconds or more. , deterioration of ride comfort due to frequent fluctuations in vehicle speed can be avoided. Furthermore, since the vehicle does not always drive with overdrive released, fuel consumption can be saved. Note that the timer 114 is reset by the output of the inverter 115 when the vehicle speed decreases by approximately 3 km/h from the set vehicle speed. Without this reset function, for example, when the vehicle speed drops by about 3 km/h and immediately returns to normal, the timer 114 would be set.
After that, when the speed drops by about 7 km/h and a downshift is performed, the timer 114 outputs "1" while the speed is increasing, causing the inconvenience that the flip-flop 113 is reset even though the speed is increasing. Put it away. On that point, the timer is 114 when the drop is 3km/h.
If it is reset, such inconvenience will not occur and it is very advantageous.
以上説明したように、本発明に依れば、上り坂
の車速低下をシフトダウンの指示と解除によつて
防止する自動車用速度制御装置に対し、車速が低
下したときにリセツトされ車速がほぼ設定車速ま
で復帰したときにセツトされるタイマを設け、こ
のタイマの設定時間だけシフトダウンの解除を遅
らせるようにしたものであり、簡単な構成で上り
勾配の走行路における乗り心地を向上させること
ができ、また常時シフトダウンを行なつて走行す
るものでないから燃費もそれほど悪化することは
ない。更にまた、車速低下によるシフトダウン中
に該シフトダウンが解除されるという不都合も生
じない。 As explained above, according to the present invention, a speed control device for an automobile that prevents a decrease in vehicle speed on an uphill slope by instructing and canceling a downshift is reset when the vehicle speed decreases and the vehicle speed is almost set. A timer is provided that is set when the vehicle speed has returned to normal, and the release of the downshift is delayed by the time set by this timer.This simple configuration can improve ride comfort on uphill roads. Also, since the vehicle is not driven by constantly downshifting, fuel efficiency will not deteriorate significantly. Furthermore, the inconvenience of canceling the downshift during a downshift due to a decrease in vehicle speed does not occur.
なお、本発明は以上の実施例にのみ限定される
ものではなく、その他各種付加変更し得るもので
あり、適用車種もオートトランスミツシヨン車の
みに限定されず、マニユアルトランスミツシヨン
車であつても良いことは勿論のことである。ま
た、設定車速をデイジタル的に記憶し、進角補償
や比較回路１０９，１１０、タイマ１１４の機能
をマイクロプロセツサの演算機能を用いて実現し
ても良い。 It should be noted that the present invention is not limited to the above-described embodiments, and can be modified in various ways, and the applicable vehicle types are not limited to automatic transmission vehicles, but also manual transmission vehicles. Of course, this is also a good thing. Alternatively, the set vehicle speed may be stored digitally, and the functions of advance angle compensation, comparison circuits 109 and 110, and timer 114 may be realized using the calculation functions of a microprocessor.
図は本発明実施例装置の要部ブロツク図であ
る。
１００はＦ―Ｖ変換器、１０１は比較器、１０
２はアナログメモリ回路、１０３はアナログスイ
ツチ、１０７は負圧式アクチユエータ、１０９，
１１０は比較回路、１１１，１１２は基準電圧、
１１３はフリツプフロツプ、１１４はタイマ、１
１６はオーバードライバ起動・解除部、１１７は
オーバードライブカツト用コイルである。
The figure is a block diagram of essential parts of an apparatus according to an embodiment of the present invention. 100 is an F-V converter, 101 is a comparator, 10
2 is an analog memory circuit, 103 is an analog switch, 107 is a negative pressure actuator, 109,
110 is a comparison circuit, 111 and 112 are reference voltages,
113 is a flip-flop, 114 is a timer, 1
Reference numeral 16 represents an overdriver activation/release unit, and 117 represents an overdrive cut coil.
Claims (1)
定車速より第１の所定速度だけ低下したときに所
定の変速段までシフトダウンを指示する信号を出
力し、車速の低下が該第１の所定速度より小さい
第２の所定速度まで復帰したときに該シフトダウ
ンを指示する信号を解除するようにした自動車用
速度制御装置において、 車速が前記第２の所定速度だけ低下したときに
リセツトされ車速が前記第２の所定速度まで復帰
したときにセツトされるタイマを設け、該タイマ
の出力により前記シフトダウンを指示する信号を
解除するようにしたことを特徴とする自動車用速
度制御装置。[Claims] 1. In order to prevent the vehicle speed from decreasing on an uphill slope, when the vehicle speed decreases by a first predetermined speed from the set vehicle speed, a signal instructing a downshift to a predetermined gear is output, and the vehicle speed decreases. In the vehicle speed control device, the signal instructing the downshift is released when the vehicle returns to a second predetermined speed smaller than the first predetermined speed, wherein the vehicle speed has decreased by the second predetermined speed. A timer is provided which is reset when the vehicle speed returns to the second predetermined speed, and the signal instructing the downshift is canceled by the output of the timer. Control device.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56080286A JPS57196317A (en) | 1981-05-27 | 1981-05-27 | Speed controller for car |
| US06/382,413 US4463822A (en) | 1981-05-27 | 1982-05-26 | Cruise control system for automotive vehicle |
| US06/614,861 US4535864A (en) | 1981-05-27 | 1984-05-29 | Cruise control system for automotive vehicle |
| US06/685,541 US4535865A (en) | 1981-05-27 | 1984-12-24 | Cruise control system for automotive vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56080286A JPS57196317A (en) | 1981-05-27 | 1981-05-27 | Speed controller for car |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57196317A JPS57196317A (en) | 1982-12-02 |
| JPS6236889B2 true JPS6236889B2 (en) | 1987-08-10 |
Family
ID=13714023
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56080286A Granted JPS57196317A (en) | 1981-05-27 | 1981-05-27 | Speed controller for car |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57196317A (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58193954A (en) * | 1982-05-06 | 1983-11-11 | Nissan Motor Co Ltd | Automatic transmission controller of automovile with rated speed traveling device |
| US4697478A (en) * | 1985-09-11 | 1987-10-06 | Mazda Motor Corporation | Automatic cruise control system for a motor vehicle |
| JPS6349533A (en) * | 1986-08-19 | 1988-03-02 | Aisin Seiki Co Ltd | Speed control device |
| JPH085347B2 (en) * | 1988-04-28 | 1996-01-24 | 三菱電機株式会社 | Vehicle constant-speed traveling device |
| DE10021770A1 (en) | 2000-05-04 | 2001-11-08 | Zahnradfabrik Friedrichshafen | Method for controlling an automatic transmission for a motor vehicle |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57121713A (en) * | 1981-01-20 | 1982-07-29 | Toyota Motor Corp | Constant speed running device for vehicle |
-
1981
- 1981-05-27 JP JP56080286A patent/JPS57196317A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57196317A (en) | 1982-12-02 |
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