JPS6124626A - Constant speed running gear for car - Google Patents

Constant speed running gear for car

Info

Publication number
JPS6124626A
JPS6124626A JP14515684A JP14515684A JPS6124626A JP S6124626 A JPS6124626 A JP S6124626A JP 14515684 A JP14515684 A JP 14515684A JP 14515684 A JP14515684 A JP 14515684A JP S6124626 A JPS6124626 A JP S6124626A
Authority
JP
Japan
Prior art keywords
switch
constant speed
vehicle speed
speed
running
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.)
Pending
Application number
JP14515684A
Other languages
Japanese (ja)
Inventor
Koji Ueda
浩二 上田
Toshimichi Tokunaga
徳永 利道
Toshifumi Wakita
脇田 敏文
Toshiharu Kokubu
國分 歳治
Yasuo Miyakai
宮廻 安雄
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.)
Mazda Motor Corp
Original Assignee
Mazda Motor 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 Mazda Motor Corp filed Critical Mazda Motor Corp
Priority to JP14515684A priority Critical patent/JPS6124626A/en
Publication of JPS6124626A publication Critical patent/JPS6124626A/en
Pending legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60KARRANGEMENT 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
    • B60K31/00Vehicle 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
    • B60K31/02Vehicle 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 electrically actuated servomechanism including an electric control system or a servomechanism in which the vehicle velocity affecting element is actuated electrically
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60WCONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W2552/00Input parameters relating to infrastructure
    • B60W2552/15Road slope, i.e. the inclination of a road segment in the longitudinal direction

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Control Of Vehicle Engines Or Engines For Specific Uses (AREA)
  • Controls For Constant Speed Travelling (AREA)

Abstract

PURPOSE:To improve braking effect due to engine braking by decelerating a car to a prescribed speed sooner than in the case of running on an even road when a coast switch is turned on during its constant speed running on a downward slope by means of a constant speed running gear. CONSTITUTION:A car is provided with a control circuit 3 for constant speed running in which a control function for constant speed running is set by turning on a set switch S2 and main switch S3, and released by turning on a brake switch S4 and a clutch switch S5. The output side of the circuit 3 is connected to an actuator 4 to adjust a throttle valve opening, and the input side of the circuit 3 is provided with a series circuit comprising a coast switch S6 working as a decelerating means to more decelerate the car running at constant speed, and an inclination switch S7 turned on when a traveling road slopes down steeper than a specified inclination. While both switches S6 and S7 are kept on, a fuel control circuit 1 works to stop fuel supply to an injector 2.

Description

【発明の詳細な説明】 (産業上の利用分野) 本発明は、自動変速機能を有する自動車の定速走行装置
、特に下り坂の路面を定速走行する場合の制動能力を向
上させた定速走行装置に関する。
Detailed Description of the Invention (Field of Industrial Application) The present invention relates to a constant speed driving device for an automobile having an automatic transmission function, and in particular a constant speed driving device with improved braking ability when driving at a constant speed on a downhill road surface. Regarding traveling equipment.

(従来技術) 通称オートクルーズと呼ばれる自動車の定速走行装置は
、予じめ定めた設定車速(通常4.0 Km/h〜] 
00 Km/hの間で設定)と速度センサによって検出
される検出車速とを比較し、常時、この検出車速か設定
車速に収束するようにスロットルバルブの開度をアクチ
ュエータを介して制御することによって設定車速を維持
するようになっており、一般には走行途中において車速
が所望の値に達した時点で、車速設定用のセットスイッ
チを作動させるこ七により、その時の車速か設定車速と
して制御器内に記憶されるようになっている。
(Prior art) A constant speed driving device for automobiles, commonly known as auto cruise, operates at a predetermined set vehicle speed (usually 4.0 Km/h~).
00 Km/h) and the detected vehicle speed detected by the speed sensor, and the throttle valve opening degree is controlled via the actuator so that the detected vehicle speed always converges to the set vehicle speed. The set vehicle speed is maintained, and generally, when the vehicle speed reaches a desired value while driving, a set switch for vehicle speed setting is activated, and the current vehicle speed or set vehicle speed is stored in the controller. is stored in the memory.

この定速走行装置による定速走行制御は、前記制御器の
メインスイッチがOFFとされた時とかクラッチペダル
あるいはブレーキペダルが踏み込まれた場合には解除さ
れ、再びセットスイッチによって車速設定が行なわれる
まではスロットルバルブはアクセルペダルの踏込量によ
って制御される(例えば、特開昭53−141880号
公報参照)。
The constant speed traveling control by this constant speed traveling device is canceled when the main switch of the controller is turned off or when the clutch pedal or brake pedal is depressed, until the vehicle speed is set again by the set switch. The throttle valve is controlled by the amount of depression of the accelerator pedal (see, for example, Japanese Patent Laid-Open No. 141880/1983).

また、定速走行をしている場合において下り坂にさしか
かった時のように、当該設定速度より低速域で定速走行
させた方がよいと思われる場合、ブレーキペダルを踏み
込むと上述の如く定速走行制御そのものが解除されるの
で定速走行は不可能となる。そこで、この場合にはコー
ストスイッチを作動させて設定車速を所定速度まで低下
させる。
In addition, when you are driving at a constant speed and it seems better to drive at a constant speed lower than the set speed, such as when you approach a downhill slope, pressing the brake pedal will cause the speed to change as described above. Since the speed running control itself is canceled, constant speed running becomes impossible. Therefore, in this case, the coast switch is operated to reduce the set vehicle speed to a predetermined speed.

すなわち、定速走行中においてコーストスイッチをON
状態にすると、該コーストスイッチが投入さjtている
間は連続してアクチュエータが作動しスロットルバルブ
が絞られてエンジン出力が低下してエンジンブレーキが
きき、車速が設定車速から次第に低下せしめられるとと
もに、該コーストスイッチがOFFされるとそのOFF
時の車速か新たな設定車速として制御器内に記憶され、
自動車はこの新たな設定車速に基いて再び定速走行状態
になるようになっている。
In other words, when driving at a constant speed, turn on the coast switch.
When the coast switch is turned on, the actuator is operated continuously, the throttle valve is throttled, the engine output is reduced, the engine brake is applied, and the vehicle speed is gradually reduced from the set vehicle speed. When the coast switch is turned OFF, the OFF
The vehicle speed is stored in the controller as the current vehicle speed or the new set vehicle speed.
Based on this newly set vehicle speed, the vehicle returns to a constant speed driving state.

ところが、通常、定速走行制御は自動変速機の変速段が
高速段(4段または5段)に設定された状態において行
なわれることが多く、このような高速域での定速走行中
においてコーストスイッチを作動させても大きなエンジ
ンブレーキ力は得られず、特に下り坂走行時の如く車重
が加速方向に作用するような場合には平地走行時に比べ
て、実際に減速されるまでには相当に時間がかかること
になり、危険性が高いという欠点がある。
However, constant speed driving control is often performed when the automatic transmission is set to a high gear (4th or 5th gear), and during constant speed driving in such a high speed range, coasting Activating the switch does not provide a large amount of engine braking force, and especially when the weight of the vehicle acts in the direction of acceleration, such as when driving downhill, it takes a considerable amount of time to actually decelerate compared to when driving on flat ground. The drawbacks are that it takes time and is highly dangerous.

(発明の目的) 本発明は、上記従来技術の項で指摘した問題を解決ある
いは改善しようとしてなされたもので、下り坂を定速走
行装置により定速走行している状態でコーストスイッチ
を作動させた場合には、車速を平坦地を走行している場
合よりも早く所定速度まで減速させることができるよう
にして特に下り坂を定速走行する場合の制動能力を向上
させた自動車の定速走行装置を提供することを目的とす
るものである。
(Object of the Invention) The present invention has been made in an attempt to solve or improve the problems pointed out in the above-mentioned section of the prior art. Constant-speed driving of a car improves braking ability, especially when driving downhill at a constant speed, by making it possible to reduce the vehicle speed to a predetermined speed faster than when driving on flat ground. The purpose is to provide a device.

(目的を達成するための手段) 本発明は、以上の目的を達成する手段として、エンジン
のスロットルバルブの開度を制御するアクチュエータと
、定速走行のための車速を設定する車速設定手段と、前
記車速設定手段により設定された定速走行状態の当該車
速を減速する減速手段と、前記車速設定手段および前記
減速手段からの各・出力をそれぞれ入力し、前記車速設
定手段による設定車速を基準として前記減速手段から出
力が供給されている間はさらに車速を低下させるように
前記アクチュエータを制御するアクチュエータ制御手段
と、下り坂走行路面の斜度状態を検出する斜度状態検出
手段と、前記定速走行状態において、前記斜度状態検出
手段および前記減速手段が共に作動したときにエンジン
への燃料の供給を制限する燃料制限手段とから構成され
ている。
(Means for Achieving the Object) As a means for achieving the above object, the present invention provides an actuator for controlling the opening degree of a throttle valve of an engine, a vehicle speed setting means for setting a vehicle speed for constant speed driving, A deceleration means for decelerating the vehicle speed in a constant speed running state set by the vehicle speed setting means, each output from the vehicle speed setting means and the deceleration means is inputted, and the vehicle speed set by the vehicle speed setting means is used as a reference. actuator control means for controlling the actuator to further reduce the vehicle speed while the output is being supplied from the deceleration means; slope state detection means for detecting the slope state of a downhill traveling road surface; and the constant speed The vehicle is comprised of fuel restriction means for restricting the supply of fuel to the engine when both the slope state detection means and the deceleration means operate in a running state.

(作用) 以上のように、本発明では、減速手段の他に特に定速走
行状態における路面の斜度状態を検出する斜度状態検出
手段と燃料制限手段とを設け、走行路面が所定以上の下
り坂であってしかも減速手段が操作された場合には、燃
料制限手段をも同時に作動させてエンジンへの燃料の供
給を制限(減量又はカット)し減速手段によるスロット
ルバルブの閉成制御に併せて機能−させるようにしたも
のであり、エンジンブレーキによる制動効果を下り坂を
走行する場合に特に迅速かつ効果的に増大させるように
作用する。
(Function) As described above, in the present invention, in addition to the deceleration means, a slope state detection means for detecting the slope state of the road surface in a constant speed running state and a fuel restriction means are provided. If the deceleration means is operated while the vehicle is on a downhill slope, the fuel restriction means is also operated at the same time to limit (reduce or cut) the fuel supply to the engine, in conjunction with the throttle valve closing control by the deceleration means. This function is designed to increase the braking effect of the engine brake particularly quickly and effectively when traveling downhill.

(実施例) 以下、本発明の一実施例を添付図面を参照して詳細に説
明する。
(Example) Hereinafter, an example of the present invention will be described in detail with reference to the accompanying drawings.

図面は、前記一実施例による定速走行装置の回路構成を
示す電気的結線図である。図において、先ず符号Iは、
内部に燃料カット回路を有し燃料制限手段として機能す
る燃料制御回路であり、その出力端は相互に直列接続さ
れた逆極性の制御トランジスタQ、、Q、を介してエン
ジンへの供給燃料制御用のインジェクタ2に接続されて
いる。
The drawing is an electrical wiring diagram showing the circuit configuration of the constant speed traveling device according to the embodiment. In the figure, first, the symbol I is
This is a fuel control circuit that has a fuel cut circuit inside and functions as a fuel restriction means, and its output terminal is used to control the fuel supplied to the engine via control transistors Q, , Q, which are connected in series and have opposite polarities. is connected to the injector 2.

また、その入力端はNP’N型のスイッチングトランジ
スタQ3と電流制限抵抗R,を介して高速リミ・ツタス
イッチS1に接続されている。
Further, its input terminal is connected to a high-speed limit switch S1 via an NP'N type switching transistor Q3 and a current limiting resistor R.

高速リミックスイッチS、は、例えば後述するリードス
イッチなどの車速検出手段SRにより、走行状態におけ
る車速か所定の制限、速度(例えば、−我国の場合10
0 Km/h)に達したことを検出し、その時に作動し
てON状態となる。
The high-speed rimic switch S detects the vehicle speed in the running state or a predetermined limit or speed (for example, -10
It detects that the speed has reached 0 Km/h), and at that time it operates and turns on.

したがって、今高速すミックスイッチS1がON状態に
なると、通常は電源子BによりバイアスされてON状態
にある前記トランジスタQ3はベース側電位がアース電
位に落とされることによってOFF状態となる。その結
果、前記燃料制御回路1に動作電源が供給されることに
なり、燃料カット回路が働いて燃料制御回路1からの当
該制御トランジスタQ、、Q2への制御信号の供給は停
止され、結局当該インジェクタ2は閉塞されてエンジン
への燃料供給を所定量又は全量カットする。
Therefore, when the high-speed Sumic switch S1 is now turned on, the transistor Q3, which is normally biased by the power supply element B and turned on, is turned off as the base side potential is lowered to the ground potential. As a result, operating power is supplied to the fuel control circuit 1, and the fuel cut circuit operates to stop supplying control signals from the fuel control circuit 1 to the control transistors Q, Q2. The injector 2 is blocked to cut off the fuel supply to the engine by a predetermined amount or the entire amount.

一方、符号3はアクチュエータ制御手段として機能する
定速走行制御回路であり、車速設定手段としてのセット
スイッチS、とさらに相互に並列に接続されたメインス
イッチS’3 、ブレーキスイッチSいクラッチスイッ
チS5の少なくとも4種の制御スイッチを備えている。
On the other hand, reference numeral 3 denotes a constant speed running control circuit that functions as an actuator control means, and includes a set switch S as a vehicle speed setting means, a main switch S'3, a brake switch S, and a clutch switch S5, which are connected in parallel. At least four types of control switches are provided.

セットスイッチS、は、定速走行における車速を設定す
るもので、通常セットスイッチS2が投入されると、図
示しない自己保持回路が働いてその投入状態をボールド
すると七もに記憶回路が動作して車速変化を考慮した上
で所定の制御データに基き設定車速に対応してスロット
ルバルブの開度をコントロールする。メインスイッチS
3は、定速走行制御回路3の定速走行制御機能そのもの
をONまたはOFFするものであり、前述のセットスイ
ッチS2が投入されていてもこのメインスイッチS3が
OFFにされると定速走行制御機能そのものが完全に解
除される。ブレーキスイッチS4は、ブレーキペダルが
踏み込まれた時にON状態となり、その間における定速
走行制御機能を解除する。クラッチスイッチS5はクラ
ッチペダルが踏み込まれた時にON状態となり、前記ブ
レーキスイッチS4と同様にその間における定速走行制
御機能を解除する。
The set switch S is used to set the vehicle speed when driving at a constant speed. Normally, when the set switch S2 is turned on, a self-holding circuit (not shown) is activated, and when the turned-on state is shown in bold, a memory circuit is activated. The opening degree of the throttle valve is controlled in accordance with the set vehicle speed based on predetermined control data, taking into account changes in vehicle speed. Main switch S
3 turns on or off the constant speed driving control function itself of the constant speed driving control circuit 3, and even if the aforementioned set switch S2 is turned on, when this main switch S3 is turned OFF, the constant speed driving control is performed. The function itself is completely disabled. The brake switch S4 is turned on when the brake pedal is depressed, and cancels the constant speed driving control function during that time. The clutch switch S5 is turned on when the clutch pedal is depressed, and like the brake switch S4, the constant speed running control function is canceled during that time.

そして、前記定速走行制御回路3は、その出力端にNP
N型のスイッチングトランジスタQ4が接続され、この
トランジスタQ4のONによりそのコレクタ側に接続さ
れているアクチュエータ4を作動するようになっている
。アクチュエータ4は、例えば電磁弁を有し空気圧作動
により作動されるダイヤフラムにより構成されていて、
前記トランジスタQ4の動作によりソレノイドコイルに
流れる電流を制御して前記電磁弁の開閉動作をコントロ
ールすることによって、スロットルバルブの開度を調節
する。
The constant speed running control circuit 3 has an NP output terminal at its output terminal.
An N-type switching transistor Q4 is connected, and when this transistor Q4 is turned on, the actuator 4 connected to its collector side is actuated. The actuator 4 is constituted by, for example, a diaphragm having a solenoid valve and operated by pneumatic operation.
The opening degree of the throttle valve is adjusted by controlling the current flowing through the solenoid coil through the operation of the transistor Q4 to control the opening/closing operation of the electromagnetic valve.

したがって、今所定の速度で走行中において前記セント
スイッチS2が投入(セット)されると、定速走行制御
回路3が動作して、先ずセットスイッチS、投入時の設
定車速が基準信号として記憶され、次に車速検出手段S
Rで検出された車速信号と比較される。そして、その設
定車速に一致するように前記アクチュエータ4をトラン
ジスタQ4を介し制御してスロットルバルブの開度をコ
ントロールする。
Therefore, when the center switch S2 is turned on (set) while driving at a predetermined speed, the constant speed driving control circuit 3 operates, and first the set vehicle speed at the time of turning on the set switch S is stored as a reference signal. , then vehicle speed detection means S
It is compared with the vehicle speed signal detected at R. Then, the actuator 4 is controlled via the transistor Q4 to control the opening degree of the throttle valve so as to match the set vehicle speed.

一方、定速走行制御回路3の入力端子のひとつには、一
方の端子をインバータ6によりL電位に規定されたNA
NDゲート5が接続され、このNANDゲート5の他方
の端子はコンデンサCと抵抗R2よりなる所定の時定数
をもった充放電回路を介して減速手段としてのコースト
スイッチS6に接続されている。このコーストスイッチ
S6は、定速走行状態での車速をより低速側に減速させ
るもので、投入されると先ず既に充電状態にあり、通常
はa点の電位をHに維持している前記コンデンサCが抵
抗R3と当該コンデンサCの容量とによって決まる時定
数で瞬間的に放電してa点はアース電位になり、NAN
Dゲート5の入力は共にLとなって論理値“じのH信号
を出力する。その結果、定速走行制御回路3はコースト
信号入力として上記論理値゛l”の■]信号を入力して
制御動作を行い、設定車速を基準として上記H信号が供
給されている間中、トランジスタQ4を駆動して前記ア
クチュエータ4を減速する方向に制御する。
On the other hand, one of the input terminals of the constant speed running control circuit 3 is connected to an NA whose one terminal is set to L potential by the inverter 6.
An ND gate 5 is connected, and the other terminal of the NAND gate 5 is connected to a coast switch S6 as a deceleration means via a charging/discharging circuit having a predetermined time constant and consisting of a capacitor C and a resistor R2. This coast switch S6 decelerates the vehicle speed to a lower speed side in a constant speed running state, and when it is turned on, the capacitor C is already in a charging state and normally maintains the potential at point a at H. is instantaneously discharged with a time constant determined by the resistor R3 and the capacitance of the capacitor C, and the point a becomes the ground potential, and the NAN
Both inputs of the D gate 5 become L and output a signal with the same logic value "H".As a result, the constant speed running control circuit 3 inputs the signal with the logic value "l" as a coast signal input. A control operation is performed to control the actuator 4 in the direction of decelerating it by driving the transistor Q4 while the H signal is being supplied with the set vehicle speed as a reference.

ところで、上記コースト信号S8の電源側には、さらに
、一端を高速リミックスイッヂS1の電源側に接続(並
列)した下り坂における斜度状態検出手段としての斜度
スイッチS7が直列に接続されている。この斜度スイッ
チS7は、走行路面が所定傾斜角以上の下り坂である場
合(自動車の前傾角度が所定値以上になったとき)に斜
度センサが働いてONとなる。そして、その状態でコー
ストスイッチS6がON状態になると高速リミックスイ
ッチS1の作動時と同じようにトランジスタQ3をOF
Fにし、燃料制御回路1を動作しインジェクタ2の燃料
供給を停止させる。
Incidentally, a slope switch S7 is further connected in series to the power supply side of the coast signal S8 as means for detecting a slope state on a downhill slope, one end of which is connected (in parallel) to the power supply side of the high-speed remix switch S1. There is. The slope switch S7 is turned on by the slope sensor when the road surface on which the vehicle is traveling is a downhill slope with a slope angle of a predetermined angle or more (when the forward tilt angle of the vehicle exceeds a predetermined value). In this state, when the coast switch S6 is turned ON, the transistor Q3 is turned OFF in the same way as when the high-speed limit switch S1 is activated.
F and operates the fuel control circuit 1 to stop the fuel supply from the injector 2.

すなわち、現在定速−走行を行っており、すでに説明し
たセットスイッチS2、メインスイッチS3がON状態
で定速走行制御回路3が所定の設定速度で定速制御動作
している場合において、その走行路面が所定角以上の下
り坂である場合には上記のように斜度センサが働いて先
ず斜度スイッチS7が投入状態となる。そして、この状
態で減速手段としてのコーストスイッチS、がONされ
ると、上記斜度スイッチS7との直列回路が形成される
ことになり、燃料制御回路1側では高速リミックスイッ
チS1のONと同様にトランジスタQ3がOFFとなっ
て燃料制御回路Iの燃料カット回路に動作電源を供給し
てインジェクタ2の動作゛を停止させるとともに、他方
定速走行制御回路3側では前述の減速動作と同様にアク
チュエータ4を制御してスロットルバルブの開度を下げ
る。
That is, when the vehicle is currently traveling at a constant speed, the set switch S2 and the main switch S3 described above are in the ON state, and the constant speed vehicle control circuit 3 is performing constant speed control at a predetermined set speed. If the road surface is a downhill slope of a predetermined angle or more, the slope sensor operates as described above, and the slope switch S7 is first turned on. In this state, when the coast switch S as a deceleration means is turned on, a series circuit with the slope switch S7 is formed, and on the fuel control circuit 1 side, it is the same as when the high speed limit switch S1 is turned on. , the transistor Q3 turns OFF and supplies operating power to the fuel cut circuit of the fuel control circuit I to stop the operation of the injector 2. On the other hand, on the constant speed running control circuit 3 side, the actuator is turned OFF in the same manner as in the deceleration operation described above. 4 to lower the throttle valve opening.

従って、本実施例の場合、下り坂を定速走行中にコース
トスイッチ$6を操作すると、スロットルバルブの調節
による減速動作とともに燃料カットによる減速動作が併
用されることになるので、コーストスイッチのみの場合
に較べてエンジンブレーキによる制動力がさらに向上す
る。
Therefore, in the case of this embodiment, if the coast switch $6 is operated while driving downhill at a constant speed, the deceleration operation by adjusting the throttle valve and the deceleration operation by fuel cut are used together, so the coast switch alone is used. The braking force due to engine braking is further improved compared to the case where the engine brake is used.

(発明の効果) 本発明は、以上のように、エンジンブレーキのスロット
ルバルブの開度を制御するアクチュエータと、定速走行
のための車速を設定する車速設定手段と、前記車速設定
手段により設定された定速走行状態で車速を減速する減
速手段と、前記車速設定手段および前記減速手段からの
各出力をそれぞれ入力し、前記設定車速を基準としてさ
らに車速を低下させるように前記アクチュエータを駆動
するアクチュエータ制御手段と、下り坂走行路面の斜度
状態を検出する斜度状態検出手段と、定速走行状態にお
いて前記斜度状態検出手段および前記減速手段が共に作
動したときにエンジンへの燃料の供給を制限する燃料制
限手段とからなり、下り坂を定速走行している場合には
通常の減速手段(コーストスイッチ)による減速機能に
併せてエンジンへの燃料の供給も制限するようにしたの
で、従来のようにコーストスイッチのみによるエンジン
ブレーキの場合に較べて制動力が向上し、安全性も高く
なる。しかも、例えば斜度センサな−どの単に下り坂を
検出する検出手段さえ設ければ燃料制限手段は高速リミ
ッタ用のものを兼用することができるので構成も簡単で
済みコスト上昇も低い。
(Effects of the Invention) As described above, the present invention provides an actuator for controlling the opening degree of a throttle valve of an engine brake, a vehicle speed setting means for setting a vehicle speed for constant speed driving, and a vehicle speed set by the vehicle speed setting means. and an actuator that receives each output from the vehicle speed setting means and the deceleration means and drives the actuator so as to further reduce the vehicle speed based on the set vehicle speed. a control means, a slope state detection means for detecting a slope state of a downhill running road surface, and a control means for supplying fuel to the engine when both the slope state detection means and the deceleration means operate in a constant speed running state. When driving downhill at a constant speed, the fuel supply to the engine is restricted in addition to the deceleration function by the normal deceleration means (coast switch), which is different from the conventional method. Compared to engine braking using only a coast switch, the braking force is improved and safety is also improved. Moreover, the fuel limiting means can also be used as a high-speed limiter by simply providing a detecting means for detecting a downhill slope, such as an inclination sensor, so the construction is simple and the increase in cost is low.

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

図面は、本発明の一実施例による自動車の定速走行制御
装置の回路構成を示す電気的結線図である。 1 ・・・・・燃料制御回路 2 ・・・・・インジェクタ 3 ・・・・・定速走行制御回路 4 ・・・・・アクチュエータ 5 ・・・・・NANDゲート
The drawing is an electrical wiring diagram showing a circuit configuration of a constant speed cruise control device for an automobile according to an embodiment of the present invention. 1 ...Fuel control circuit 2 ...Injector 3 ...Constant speed running control circuit 4 ...Actuator 5 ...NAND gate

Claims (1)

【特許請求の範囲】[Claims] 1.エンジンのスロットルバルブの開度を制御するアク
チュエータと、定速走行のための車速を設定する車速設
定手段と、この車速設定手段により設定された定速走行
状態の当該車速を減速する減速手段と、前記車速設定手
段および前記減速手段からの各出力をそれぞれ入力し、
前記車速設定手段による設定車速を基準として前記減速
手段からの出力が供給されている間さらに車速を低下さ
せるように前記アクチュエータを制御するアクチュエー
タ制御手段と、下り坂走行路面の斜度状態を検出する斜
度状態検出手段と、前記定速走行状態において、前記斜
度状態検出手段および前記減速手段が共に作動したとき
にエンジンへの燃料の供給を制限する燃料制限手段とか
らなる自動車の定速走行装置。
1. an actuator that controls the opening of a throttle valve of the engine; a vehicle speed setting device that sets a vehicle speed for constant speed driving; and a deceleration device that reduces the speed of the vehicle in a constant speed driving state set by the vehicle speed setting device; inputting each output from the vehicle speed setting means and the deceleration means, respectively;
Actuator control means for controlling the actuator to further reduce the vehicle speed while the output from the deceleration means is being supplied based on the vehicle speed set by the vehicle speed setting means; and detecting the slope state of a downhill running road surface. Constant-speed running of an automobile, comprising: slope state detection means; and fuel restriction means for restricting the supply of fuel to the engine when both the slope state detection means and the deceleration means operate in the constant-speed running state. Device.
JP14515684A 1984-07-11 1984-07-11 Constant speed running gear for car Pending JPS6124626A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14515684A JPS6124626A (en) 1984-07-11 1984-07-11 Constant speed running gear for car

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14515684A JPS6124626A (en) 1984-07-11 1984-07-11 Constant speed running gear for car

Publications (1)

Publication Number Publication Date
JPS6124626A true JPS6124626A (en) 1986-02-03

Family

ID=15378717

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14515684A Pending JPS6124626A (en) 1984-07-11 1984-07-11 Constant speed running gear for car

Country Status (1)

Country Link
JP (1) JPS6124626A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0257434A (en) * 1988-08-20 1990-02-27 Mitsubishi Motors Corp Device for controlling engine for vehicle
US5010150A (en) * 1988-12-15 1991-04-23 Basf Aktiengesellschaft Controlling the particle size in the preparation of polymer powders

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0257434A (en) * 1988-08-20 1990-02-27 Mitsubishi Motors Corp Device for controlling engine for vehicle
US5010150A (en) * 1988-12-15 1991-04-23 Basf Aktiengesellschaft Controlling the particle size in the preparation of polymer powders

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