JPH04231250A - Brake system also functioning as anti-lock control - Google Patents
Brake system also functioning as anti-lock controlInfo
- Publication number
- JPH04231250A JPH04231250A JP3141151A JP14115191A JPH04231250A JP H04231250 A JPH04231250 A JP H04231250A JP 3141151 A JP3141151 A JP 3141151A JP 14115191 A JP14115191 A JP 14115191A JP H04231250 A JPH04231250 A JP H04231250A
- Authority
- JP
- Japan
- Prior art keywords
- pressure
- auxiliary
- brake
- pump
- valve
- 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
Links
- 230000006835 compression Effects 0.000 claims description 7
- 238000007906 compression Methods 0.000 claims description 7
- 230000007246 mechanism Effects 0.000 claims description 4
- 230000001276 controlling effect Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000002706 hydrostatic effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
- B60T8/32—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
- B60T8/34—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition
- B60T8/40—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition comprising an additional fluid circuit including fluid pressurising means for modifying the pressure of the braking fluid, e.g. including wheel driven pumps for detecting a speed condition, or pumps which are controlled by means independent of the braking system
- B60T8/404—Control of the pump unit
- B60T8/4054—Control of the pump unit involving the delivery pressure control
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
- B60T8/32—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
- B60T8/34—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition
- B60T8/40—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition comprising an additional fluid circuit including fluid pressurising means for modifying the pressure of the braking fluid, e.g. including wheel driven pumps for detecting a speed condition, or pumps which are controlled by means independent of the braking system
- B60T8/404—Control of the pump unit
- B60T8/4059—Control of the pump unit involving the rate of delivery
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
- B60T8/32—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
- B60T8/34—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition
- B60T8/42—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition having expanding chambers for controlling pressure, i.e. closed systems
- B60T8/4275—Pump-back systems
- B60T8/4291—Pump-back systems having means to reduce or eliminate pedal kick-back
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
- B60T8/32—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
- B60T8/34—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition
- B60T8/44—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition co-operating with a power-assist booster means associated with a master cylinder for controlling the release and reapplication of brake pressure through an interaction with the power assist device, i.e. open systems
- B60T8/445—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition co-operating with a power-assist booster means associated with a master cylinder for controlling the release and reapplication of brake pressure through an interaction with the power assist device, i.e. open systems replenishing the released brake fluid volume into the brake piping
Abstract
Description
【０００１】0001
【産業上の利用分野】本発明は、少なくとも１のホイー
ルブレーキに主圧力管路を介して接続されるマスターシ
リンダと補助圧管路に接続される補助液圧ポンプとを持
つペダル作動かつ補助圧援助の制動圧ジェネレータと、
車輪の回転状態を検出して車輪のスリップを制御する制
動圧制御用電気信号を形成し、前記主圧力管路及び補助
圧管路に介装した入口弁及び出口弁を電磁制御するホイ
ールセンサ及び電子回路装置とを備える自動者用アンチ
ロック制御付ブレーキシステムに関するFIELD OF INDUSTRIAL APPLICATION The present invention provides a pedal-actuated and auxiliary pressure assist system having a master cylinder connected to at least one wheel brake via a main pressure line and an auxiliary hydraulic pump connected to an auxiliary pressure line. a braking pressure generator,
A wheel sensor and an electronic device that detect the rotating state of the wheel and form an electric signal for braking pressure control to control wheel slip, and electromagnetically control the inlet valve and outlet valve installed in the main pressure pipe and the auxiliary pressure pipe. Relating to a brake system with anti-lock control for automobiles comprising a circuit device
【０００２】0002
【従来の技術】この型式のブレーキシステムは知られて
おり（ドイツ特許出願公開第 ３ ６２７ ０００号）
、ブレーキペダル側に空圧式ブレーキブースタを接続し
たタンデム型マスターシリンダが制動圧ジェネレータと
して用いられている。補助圧供給システムは２つの液圧
ポンプを備え、これらの液圧ポンプはホイールブレーキ
をダイアゴナル接続するそれぞれのブレーキ回路に配置
されている。スリップ制御しつつ制動作用を行う場合は
、ペダル踏力に比例した補助圧が補助圧供給システムか
ら制御弁を介して供給される。この補助圧システムから
の動圧は、マスターシリンダに接続された静圧ブレーキ
回路に伝達され、更に、ホイールブレーキにも供給され
る。液圧回路中にはスリップ制御を行うための入口弁が
介装されている。この入口弁は通常は開位置に配置され
ており、車輪がロックしそうになると、この入口弁によ
り各ホイールブレーキへの圧力媒体の供給を遮断するこ
とができる。BACKGROUND OF THE INVENTION A brake system of this type is known (German Patent Application No. 3 627 000).
A tandem master cylinder with a pneumatic brake booster connected to the brake pedal side is used as a braking pressure generator. The auxiliary pressure supply system comprises two hydraulic pumps, which are arranged in respective brake circuits that diagonally connect the wheel brakes. When performing a braking operation while performing slip control, an auxiliary pressure proportional to the pedal depression force is supplied from an auxiliary pressure supply system via a control valve. Dynamic pressure from this auxiliary pressure system is transmitted to a hydrostatic brake circuit connected to the master cylinder and is also supplied to the wheel brakes. An inlet valve for performing slip control is interposed in the hydraulic circuit. This inlet valve is normally arranged in the open position and allows the supply of pressure medium to the respective wheel brake to be cut off if the wheels are about to lock up.
【０００３】更に、ホイールブレーキには出口弁が配置
されている。必要な場合には、ホイールブレーキからこ
の出口弁を介して貯留リザーバに圧力媒体が排出される
。スリップ制御が開始すると、補助圧ポンプが電動モー
タを介して作動され、ホイールブレーキ内の圧力が入口
弁及び出口弁により制御される。更に、安全を確保する
ために、タンデム型マスターシリンダ内のピストンが動
圧回路によりその位置を保持されあるいは非作動位置に
移動される。Furthermore, outlet valves are arranged on the wheel brakes. If necessary, pressure medium is discharged from the wheel brake into the storage reservoir via this outlet valve. When slip control starts, the auxiliary pressure pump is activated via the electric motor and the pressure in the wheel brake is controlled by the inlet and outlet valves. Furthermore, to ensure safety, the piston in the tandem master cylinder is held in position or moved to an inactive position by a dynamic pressure circuit.
【０００４】0004
【発明が解決しようとする課題】上記のブレーキシステ
ムにおいては、動圧流体の流動状態及び弁の開閉サイク
ルで調整される圧力にしたがい、作動液を介してブレー
キシステムに音響振動が伝達され、したがってこのブレ
ーキシステムにおける質量を有し（ｍａｓｓｅｎｂｅｈ
ａｆｔｅｔｅｎ ：ｍａｓｓ−ｆｒａｕｇｈｔ）かつ振
動回路を形成する部材がその所定の振動数で共振を始め
る。この場合には、圧力パルスの強さの変化による機械
的な応力の問題とはべつに、不都合な騒音レベルは減少
すべきである。更に、補助圧ポンプの比較的高い吐出圧
も好ましいものではない。ブレーキスリップ制御中にこ
のような高い圧力を作用させる必要はなく、したがって
、実際の制御特性を超えたものであり、騒音レベルを増
加する。[Problem to be Solved by the Invention] In the above-mentioned brake system, acoustic vibrations are transmitted to the brake system via the hydraulic fluid according to the flow state of the dynamic pressure fluid and the pressure adjusted by the valve opening/closing cycle. This brake system has mass (massenbeh
(mass-frought) and the members forming the vibration circuit begin to resonate at a predetermined frequency. In this case, apart from mechanical stress problems due to changes in the strength of the pressure pulses, the undesirable noise level should be reduced. Furthermore, the relatively high delivery pressure of the auxiliary pressure pump is also undesirable. There is no need to apply such high pressures during brake slip control, thus exceeding the actual control characteristics and increasing the noise level.
【０００５】したがって、本発明は、圧力パルスの強さ
の変化で発生する不快な上記騒音の発生を減少すること
ができると共に、この圧力パルスの変化による音の発生
を減少することができるアンチロック制御付ブレーキシ
ステムを提供することを目的とする。更に、本発明はよ
り高度の制御特性を得ることを目的とする。Therefore, the present invention provides an anti-lock system that can reduce the generation of the above-mentioned unpleasant noises caused by changes in the intensity of pressure pulses, and can also reduce the generation of sounds caused by changes in pressure pulses. The purpose is to provide a controlled braking system. Furthermore, the present invention aims to obtain higher control characteristics.
【０００６】[0006]
【課題を解決するための手段、作用及び効果】本発明に
よると、少なくとも１のホイールブレーキに主圧力管路
を介して接続されるマスターシリンダと補助圧管路に接
続される補助液圧ポンプとを持つペダル作動かつ補助圧
援助の制動圧ジェネレータと、車輪の回転状態を検出し
て車輪のスリップを制御する制動圧制御用電気信号を形
成し、前記主圧力管路及び補助圧管路に介装した入口弁
及び出口弁を電磁制御するホイールセンサ及び電子回路
装置とを備える自動者用アンチロック制御付ブレーキシ
ステムであって、前記補助圧ポンプの圧力及びホイール
ブレーキに作用する圧力が作用する圧力制限弁を備え、
この圧力制限弁により所定の圧力を超えたときに無圧の
戻り管路に液圧を連通して補助圧ポンプの圧力を制御す
るブレーキシステムにより上記目的が達成される。[Means for Solving the Problems, Actions and Effects] According to the present invention, a master cylinder connected to at least one wheel brake via a main pressure line and an auxiliary hydraulic pump connected to an auxiliary pressure line are provided. A brake pressure generator for pedal operation and auxiliary pressure assistance, and a brake pressure control electric signal for detecting the rotational state of the wheels and controlling wheel slip, are interposed in the main pressure pipe and the auxiliary pressure pipe. A brake system with anti-lock control for an automatic vehicle, comprising a wheel sensor and an electronic circuit device for electromagnetically controlling an inlet valve and an outlet valve, the pressure limiting valve to which the pressure of the auxiliary pressure pump and the pressure acting on the wheel brake act. Equipped with
The above object is achieved by a brake system which controls the pressure of the auxiliary pressure pump by communicating hydraulic pressure to the unpressurized return line when a predetermined pressure is exceeded by means of the pressure limiting valve.
【０００７】したがって、本発明は、ブレーキスリップ
制御の実際のそれぞれの必要に対応させるために、比較
的高いポンプ圧力をホイールブレーキ圧力に応じて制御
すなわち制限することを基本的な考えとするものである
。The basic idea of the invention is therefore to control or limit relatively high pump pressures depending on the wheel brake pressure, in order to correspond to the respective practical needs of brake slip control. be.
【０００８】このため、ホイールブレーキに液圧を供給
する入口弁の差圧を、ホイールシリンダ圧力と補助圧ポ
ンプとに液圧的に接続された圧力制限弁により制御し、
圧力制限弁内の所定の圧力を超えた場合には無圧の貯留
リザーバに連通することが有益である。For this purpose, the differential pressure of the inlet valve that supplies hydraulic pressure to the wheel brake is controlled by a pressure limiting valve that is hydraulically connected to the wheel cylinder pressure and the auxiliary pressure pump.
It is advantageous to communicate with an unpressurized storage reservoir if a predetermined pressure in the pressure limiting valve is exceeded.
【０００９】自動的に制動圧制御を行っている間に、圧
力媒体がマスターシリンダしたがって無圧の貯留リザー
バ内に戻るのを防止するため、本発明の実施例実施例で
は主圧力管路すなわちマスターシリンダとホイールブレ
ーキへの入口弁との間に遮断弁が介装され、この遮断弁
は補助圧ポンプの制御された圧力にしたがって制動圧ジ
ェネレータとホイールブレーキとの間の圧力媒体の連通
を遮断する。In order to prevent pressure medium from returning into the master cylinder and thus into the pressureless storage reservoir during automatic braking pressure control, embodiments of the invention provide a main pressure line, ie a master cylinder. A shutoff valve is interposed between the cylinder and the inlet valve to the wheel brake, which shutoff valve blocks the communication of pressure medium between the brake pressure generator and the wheel brake according to the controlled pressure of the auxiliary pressure pump. .
【００１０】更に本発明のブレーキシステムは、圧力制
限弁における望ましい差圧を維持するために、圧力制限
弁の圧縮ばねにより例えば２０ｂａｒ の設定圧力を調
整することができる。Furthermore, the brake system according to the invention allows a set pressure of, for example, 20 bar to be adjusted by means of a compression spring of the pressure limiting valve in order to maintain a desired differential pressure across the pressure limiting valve.
【００１１】更に、制動圧ジェネレータと遮断弁との間
に少なくとも１の圧力媒体接続管路が配置され、この接
続管路がホイールブレーキ方向に閉の逆止弁を有し、主
圧力管路に並列に接続される場合には、必要ならホイー
ルブレーキ内の圧力を急速に減圧することができる点で
好ましい作動を行うことができる。Furthermore, at least one pressure medium connection line is arranged between the brake pressure generator and the shut-off valve, which connection line has a non-return valve closed in the direction of the wheel brake and is connected to the main pressure line. When connected in parallel, favorable operation can be achieved in that the pressure in the wheel brakes can be rapidly reduced if necessary.
【００１２】一般には前後の車軸側で駆動力が配分され
かつこれにより制動力も配分されるため、圧力制限弁が
前車軸側のホイールブレーキ方向への液圧接続部を有す
る場合には、前車軸のホイールブレーキ内の制動圧に応
じて補助圧ポンプが制御される。Generally, the driving force is distributed between the front and rear axles, and accordingly the braking force is also distributed, so if the pressure limiting valve has a hydraulic connection in the direction of the wheel brake on the front axle, the front The auxiliary pressure pump is controlled depending on the braking pressure in the wheel brake of the axle.
【００１３】可変ポンプの吐出量あるいはポンプ圧を制
御する具体的な実施例では、通常はピストンタイプのポ
ンプであるポンプストロークが偏心調整機構を介して変
化する。[0013] In a specific embodiment of controlling the discharge volume or pump pressure of a variable pump, usually a piston type pump, the pump stroke is varied via an eccentric adjustment mechanism.
【００１４】更に本発明はその制御を行う場合に、ポン
プ圧及び吐出量を、一定のポンプ出力状態におけるブレ
ーキスリップ発生速度／トルク特性変化表にしたがって
調整する。Furthermore, when controlling the pump according to the present invention, the pump pressure and discharge amount are adjusted in accordance with a brake slip occurrence speed/torque characteristic change table under a constant pump output state.
【００１５】本発明の他の特徴、利点及び用途は添付図
面を参照する下記実施例に関する説明から明らかとなる
。Other features, advantages and applications of the invention will become apparent from the following description of an exemplary embodiment, which refers to the accompanying drawings.
【００１６】[0016]
【実施例】図１は２つのブレーキ回路をダイアゴナル接
続したアンチロック制御付ブレーキシステムを例示する
もので、明瞭にするために一方のブレーキ回路について
説明する。DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows an example of a brake system with anti-lock control in which two brake circuits are diagonally connected. For clarity, only one brake circuit will be described.
【００１７】図１のブレーキシステムは制動圧ジェネレ
ータ６を備え、この制動圧ジェネレータは分岐した主圧
力管路５を介してダイアゴナル接続された各ホイールブ
レーキ１に液圧を連通する。制動圧ジェネレータ６はタ
ンデム型のマスターシリンダ１０と、負圧ブースタ１１
と、タンデム型マスターシリンダ１０に通常の態様で直
接固定された貯留リザーバ４とを備える。主圧力管路５
中には、制動圧ジェネレータ６に設けられた遮断弁８と
、前車軸側のホイールブレーキ１に液圧を供給する入口
弁７とを配置してある。この入口弁７は図示のように電
磁作動される。この装置は電磁作動の入口弁に代えて液
圧作動の弁（Ｂｌｅｎｄｅｎｖｅｎｔｉｌ ：ｏｒｉｆ
ｉｃｅ ）を配置することもできる。しかし、この場合
には自動制動圧制御を行うためには特別の制御アルゴリ
ズムを適用する必要がある。遮断弁８と入口弁７との間
の管路部ではダイアゴナル接続の他方のホイールブレー
キ１′に接続されかつ入口弁７を介装した主圧力管路５
が分岐し、更にこの主圧力管路５に補助圧ポンプ２を接
続する補助圧管路１２が接続する。ダイアゴナル接続の
ホイールブレーキ１を貯留リザーバ４に接続する戻り管
路１３は、ホイールブレーキ１と入口弁７との間に接続
する電磁制御の出口弁１４を介装し、更に補助圧ポンプ
２の吸入管路及び圧力制限弁３の液圧接続部に連通する
。補助圧管路１２及び主圧力管路５から分岐した制御管
路１５を介して、圧力制限弁３は補助圧ポンプ２と前車
軸のホイールブレーキ１とに連通する。更に、圧力制限
弁３には例えば第２のホイールブレーキ１′が接続され
論理和回路を形成する。圧力制限弁３に圧縮ばね１６が
配置されていることにより、付勢力を調整することで所
要の初期圧力を設定することができる。制動圧ジェネレ
ータ６と液圧制御可能な遮断弁８との間から分岐しかつ
主圧力管路に並列に配設された圧力媒体接続管路１８中
に逆止弁９が配置され、この逆止弁はそれぞれホイール
ブレーキ１に連通する。
作動態様
図示の弁の位置はブレーキ解放位置及びスリップのない
通常の制動中の状態を示す。The brake system of FIG. 1 comprises a brake pressure generator 6 which communicates hydraulic pressure via a branched main pressure line 5 to each diagonally connected wheel brake 1. The braking pressure generator 6 includes a tandem type master cylinder 10 and a negative pressure booster 11.
and a storage reservoir 4 directly fixed to the tandem master cylinder 10 in a conventional manner. Main pressure line 5
Inside, a cutoff valve 8 provided on the brake pressure generator 6 and an inlet valve 7 for supplying hydraulic pressure to the wheel brake 1 on the front axle side are arranged. This inlet valve 7 is electromagnetically actuated as shown. This device replaces the electromagnetically actuated inlet valve with a hydraulically actuated valve (Blendenventil: orif).
ice ) can also be placed. However, in this case, it is necessary to apply a special control algorithm to perform automatic brake pressure control. In the line section between the cutoff valve 8 and the inlet valve 7, a main pressure line 5 is connected to the other wheel brake 1' of the diagonal connection and has the inlet valve 7 interposed therein.
The main pressure line 5 is further connected to an auxiliary pressure line 12 which connects an auxiliary pressure pump 2. The return line 13 connecting the diagonally connected wheel brake 1 to the storage reservoir 4 is provided with an electromagnetically controlled outlet valve 14 connected between the wheel brake 1 and the inlet valve 7, and further connected to the intake valve 2 of the auxiliary pressure pump 2. It communicates with the line and the hydraulic connection of the pressure limiting valve 3. Via an auxiliary pressure line 12 and a control line 15 branching off from the main pressure line 5, the pressure limiting valve 3 communicates with the auxiliary pressure pump 2 and the wheel brake 1 of the front axle. Furthermore, a second wheel brake 1', for example, is connected to the pressure limiting valve 3 to form an OR circuit. By disposing the compression spring 16 in the pressure limiting valve 3, a required initial pressure can be set by adjusting the biasing force. A check valve 9 is disposed in a pressure medium connection line 18 that branches from between the brake pressure generator 6 and a hydraulically controllable shutoff valve 8 and is arranged in parallel with the main pressure line. The valves each communicate with a wheel brake 1. The position of the valve shown in the operating diagram shows the brake release position and the situation during normal braking without slippage.
【００１８】スリップを生じない通常のブレーキ作動位
置では、制動圧ジェネレータ６が作動されると、非作動
位置で開の遮断弁及びホイールブレーキ１の入口弁７を
介して主圧力管路５にペダル踏力に比例した圧力が形成
される。各ホイールブレーキに設けられた出口弁１４及
び逆止弁９はその非作動位置の閉状態を保持し、主圧力
管路５の圧力は圧力制限弁３の液圧制御管路１５に作用
し、圧縮ばね１６の付勢力と同じ方向に作用する。この
とき、圧力制限弁３を補助圧管路１２に接続する制御圧
管路１５は、不作動の補助圧ポンプ２方向の流れを遮断
する逆止弁１７により圧力を形成されない。In the normal brake operating position, where no slip occurs, when the brake pressure generator 6 is activated, the pedal pressure is supplied to the main pressure line 5 via the shut-off valve, which is open in the inactive position, and the inlet valve 7 of the wheel brake 1. A pressure proportional to the pedal force is created. The outlet valve 14 and the check valve 9 provided in each wheel brake maintain their inoperative closed state, and the pressure in the main pressure line 5 acts on the hydraulic control line 15 of the pressure limiting valve 3, It acts in the same direction as the biasing force of the compression spring 16. At this time, no pressure is generated in the control pressure line 15 connecting the pressure limiting valve 3 to the auxiliary pressure line 12 due to the check valve 17 blocking the flow in the direction of the inactive auxiliary pressure pump 2 .
【００１９】路面の摩擦力が低いために車輪が過制動さ
れると、図示しない電子スリップ制御ユニットにブレー
キスリップ信号が送られ、この電子制御回路の電気信号
を介して出口弁１４が開きかつ入口弁７が閉じ、ホイー
ルブレーキ１内の危険な制動圧が減圧されあるいは圧力
媒体量が低下する。同様に、電子制御ユニットは補助圧
ポンプ２を作動させ、補助圧を形成する。この補助圧に
より遮断弁８がその遮断位置に切換えられ、これにより
制動圧ジェネレータ６は主圧力管路５内のポンプ圧力か
ら分離される。圧力制限弁３が圧縮ばね１６で所定圧力
に初期設定されかつ前車軸のホイールブレーキ１に液圧
接続されており、更に補助圧ポンプ２とも液圧接続され
ているため、ポンプ圧はばね力で調整された液圧にした
がい圧力制限弁３に作用するホイールブレーキ圧力に応
じて自動的に調整される。したがって、ポンプ圧力は圧
力制限弁により、予め調整された初期圧力に加わるホイ
ールブレーキ内の圧力に対して調整される。したがって
、本実施例の液圧回路によれば、補助圧が克服すべき圧
力が比較的小さいため、必要な場合には、補助圧ポンプ
２はより迅速に圧力を形成することができる。更に、入
口弁７の差圧は圧縮ばね１６で設定された圧力制限弁３
の設定圧力よりも高くなることができないため、入口弁
７の騒音発生が大幅に減少する。When the wheels are overbraked due to low frictional force on the road surface, a brake slip signal is sent to an electronic slip control unit (not shown), and the outlet valve 14 is opened and the inlet valve is opened via the electric signal of this electronic control circuit. The valve 7 is closed and the dangerous braking pressure in the wheel brake 1 is reduced or the pressure medium quantity is reduced. Similarly, the electronic control unit activates the auxiliary pressure pump 2 to create an auxiliary pressure. This auxiliary pressure switches the isolation valve 8 into its isolation position, thereby isolating the brake pressure generator 6 from the pump pressure in the main pressure line 5. Since the pressure limiting valve 3 is initially set to a predetermined pressure by a compression spring 16 and is hydraulically connected to the wheel brake 1 of the front axle, and is also hydraulically connected to the auxiliary pressure pump 2, the pump pressure is determined by the spring force. The wheel brake pressure acting on the pressure limiting valve 3 is automatically adjusted according to the adjusted hydraulic pressure. The pump pressure is thus regulated by the pressure limiting valve to the pressure in the wheel brakes which is added to the pre-adjusted initial pressure. According to the hydraulic circuit of this embodiment, therefore, the pressure that the auxiliary pressure has to overcome is relatively small, so that the auxiliary pressure pump 2 can build up pressure more quickly if necessary. Furthermore, the differential pressure across the inlet valve 7 is reduced by the pressure limiting valve 3 set by the compression spring 16.
Since the pressure cannot be higher than the set pressure of the inlet valve 7, the noise generation of the inlet valve 7 is significantly reduced.
【００２０】通常のホイールセンサを介するブレーキス
リップ制御信号により図示しない電子制御ユニットが路
面と車輪との間の摩擦力を高めると、出口弁１４を閉じ
て増圧が開始し、入口弁７を開く。補助圧ポンプ２で形
成されかつ圧力制限弁３を介して計量された動圧は比較
的迅速に必要な圧力レベルに達することができる。制動
圧制御により路面と車輪との摩擦力が低下すると、同様
に、ブレーキスリップ制御により路面に対する摩擦力を
増大し、この入口弁７における差圧は圧力制限弁３によ
り全ての作動状態で例えば２０ｂａｒ に保持され、し
たがって入口弁７における騒音は大幅に減少する。When an electronic control unit (not shown) increases the frictional force between the road surface and the wheels in response to a brake slip control signal sent from a normal wheel sensor, the outlet valve 14 is closed to start pressure increase, and the inlet valve 7 is opened. . The dynamic pressure generated by the auxiliary pressure pump 2 and metered via the pressure limiting valve 3 can reach the required pressure level relatively quickly. When the frictional force between the road surface and the wheels is reduced by braking pressure control, the frictional force against the road surface is similarly increased by brake slip control. , and the noise at the inlet valve 7 is therefore significantly reduced.
【００２１】ポンプ圧力を特に前車軸側ホイールブレー
キ１の圧力に応じて制御することにより、路面と車輪と
の間で変化する摩擦力に対する実際の必要に応じた液圧
を供給することができる。これは、摩擦力が小さい場合
には低い補助圧を計量し、摩擦力が高い場合はこれに応
じて圧力を増大し、少なくとも摩擦力が低下したときの
スリップ制御中は制御特性を大幅に改善することができ
る。By controlling the pump pressure in particular as a function of the pressure of the front wheel brake 1, it is possible to supply a hydraulic pressure that corresponds to the actual need for the varying frictional forces between the road surface and the wheels. This meters a lower auxiliary pressure when the frictional force is low and increases the pressure accordingly when the frictional force is high, significantly improving the control characteristics, at least during slip control when the frictional force is reduced. can do.
【図１】ダイアゴナル接続したブレーキ回路を有する本
発明の実施例によるアンチロック制御付ブレーキシステ
ムの基本的な液圧回路を示す説明図である。FIG. 1 is an explanatory diagram showing a basic hydraulic circuit of a brake system with anti-lock control according to an embodiment of the present invention having diagonally connected brake circuits.
１…ホイールブレーキ、２…補助圧ポンプ、３…圧力制
限弁、４…リザーバ、５…シュー圧力管路、６…制動圧
ジェネレータ、７…入口弁、８…遮断弁、９，１７…逆
止弁、１０…マスターシリンダ、１１…負圧ブースタ、
１２…補助圧管路、１３…戻り管路、１４…出口弁、１
５…制御圧管路、１６…圧縮ばね、１８…接続管路。DESCRIPTION OF SYMBOLS 1...Wheel brake, 2...Auxiliary pressure pump, 3...Pressure limiting valve, 4...Reservoir, 5...Shoe pressure line, 6...Brake pressure generator, 7...Inlet valve, 8...Shutoff valve, 9, 17...Return check Valve, 10... Master cylinder, 11... Negative pressure booster,
12...Auxiliary pressure pipe line, 13...Return pipe line, 14...Outlet valve, 1
5... Control pressure pipe line, 16... Compression spring, 18... Connection pipe line.
Claims (8)
圧力管路を介して接続されるマスターシリンダと補助圧
管路に接続される補助圧ポンプとを持つペダル作動かつ
補助圧援助の制動圧ジェネレータと、車輪の回転状態を
検出して車輪のスリップを制御する制動圧制御用電気信
号を形成し、前記主圧力管路及び補助圧管路に介装した
入口弁及び出口弁を電磁制御するホイールセンサ及び電
子回路装置とを備える特に自動者用アンチロック制御付
ブレーキシステムであって、前記補助圧ポンプ（２）の
圧力及びホイールブレーキ（１）内の圧力が作用する圧
力制限弁（３）を備え、この圧力制限弁（３）により所
定の圧力を超えたときに無圧の戻り管路（１３）に液圧
を連通して補助圧ポンプの圧力を制御するブレーキシス
テム。1. A pedal-actuated, auxiliary pressure-assisted braking pressure generator having a master cylinder connected via a main pressure line to at least one wheel brake and an auxiliary pressure pump connected to an auxiliary pressure line; A wheel sensor and an electronic circuit that detect the rotational state of the wheel and form an electric signal for braking pressure control to control wheel slip, and electromagnetically control the inlet valve and outlet valve installed in the main pressure line and the auxiliary pressure line. A brake system with anti-lock control, especially for automobiles, comprising a pressure limiting valve (3) on which the pressure of the auxiliary pressure pump (2) and the pressure in the wheel brake (1) act, A brake system that controls the pressure of an auxiliary pressure pump by communicating hydraulic pressure to an unpressurized return pipe (13) when a predetermined pressure is exceeded by a restriction valve (3).
ネレータ（６）とホイールブレーキ（１）への入口弁（
７）との間に配設された遮断弁（８）を備え、この遮断
弁は補助圧ポンプ（２）の制御された圧力にしたがって
前記制動圧ジェネレータ（６）とホイールブレーキ（１
）との間の圧力媒体の連通を遮断する請求項１記載のブ
レーキシステム。2. In said main pressure line (5) an inlet valve (
7), which shuts off the braking pressure generator (6) and the wheel brake (1) according to the controlled pressure of the auxiliary pressure pump (2).
2. The brake system according to claim 1, wherein communication of pressure medium between the brake system and the brake system is interrupted.
用の圧縮ばね（１６）を有する請求項１または２記載の
ブレーキシステム。3. The brake system according to claim 1, wherein the pressure control valve (3) has a compression spring (16) for setting the initial pressure.
ｒ に設定可能である請求項１又は３記載のブレーキシ
ステム。4. The initial pressure of the pressure control valve is 20ba.
The brake system according to claim 1 or 3, wherein the brake system can be set to r.
弁（８）との間に少なくとも１の圧力媒体接続管路（１
８）が配置され、この接続管路はホイールブレーキ（１
）方向に閉の逆止弁（９）を有し、主圧力管路（５）に
並列に接続される請求項１から４いずれか１記載のブレ
ーキシステム。5. At least one pressure medium connection line (1) between the brake pressure generator (6) and the shut-off valve (8).
8) is arranged, and this connecting pipe is connected to the wheel brake (1
5. The brake system according to claim 1, further comprising a check valve (9) closed in the direction ) and connected in parallel to the main pressure line (5).
ホイールブレーキ（１）に液圧接続されて補助圧ポンプ
（２）の吐出圧力及び吐出量を制御する請求項１から５
いずれか１記載のブレーキシステム。6. The pressure limiting valve (3) is hydraulically connected to the wheel brake (1) on the front axle side to control the discharge pressure and discharge amount of the auxiliary pressure pump (2).
The brake system according to any one of the above.
を変化する例えば偏心調整機構である調整機構を有し、
この調整機構でピストンストロークを変化するのが好ま
しい請求項１から６いずれか１記載のブレーキシステム
。7. The auxiliary pressure pump (2) has an adjustment mechanism that changes the effective discharge amount of the auxiliary pressure pump (2), for example, an eccentric adjustment mechanism;
7. The brake system according to claim 1, wherein the adjustment mechanism preferably changes the piston stroke.
ンプ出力状態におけるブレーキスリップ発生速度／トル
ク特性表にしたがってポンプ圧力及びその吐出量を調整
する制御装置を備える請求項１から７いずれか１記載の
ブレーキシステム。8. The auxiliary pressure pump (2) includes a control device that adjusts the pump pressure and its discharge amount according to a brake slip occurrence speed/torque characteristic table in a constant pump output state. The brake system described in 1.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4015884:5 | 1990-05-17 | ||
| DE19904015884 DE4015884A1 (en) | 1990-05-17 | 1990-05-17 | ANTI-BLOCKED BRAKE SYSTEMS, IN PARTICULAR FOR MOTOR VEHICLES |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04231250A true JPH04231250A (en) | 1992-08-20 |
Family
ID=6406632
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3141151A Pending JPH04231250A (en) | 1990-05-17 | 1991-05-16 | Brake system also functioning as anti-lock control |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JPH04231250A (en) |
| DE (1) | DE4015884A1 (en) |
| FR (1) | FR2662128B1 (en) |
| GB (1) | GB2244107B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4104068A1 (en) * | 1991-02-11 | 1992-08-13 | Teves Gmbh Alfred | BLOCK-PROTECTED, HYDRAULIC BRAKE SYSTEM |
| DE4201732A1 (en) * | 1992-01-23 | 1993-07-29 | Teves Gmbh Alfred | BRAKE PRESSURE CONTROL DEVICE, IN PARTICULAR TO CONTROL THE DRIVE SLIP OF DRIVED WHEELS |
| DE102006056673B4 (en) * | 2006-11-30 | 2020-10-22 | Continental Teves Ag & Co. Ohg | Brake control method and computer program product for a motor vehicle brake system with at least driving stability and anti-lock control |
Family Cites Families (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60236859A (en) * | 1984-05-08 | 1985-11-25 | Toyota Motor Corp | Antiskid device |
| DE3583654D1 (en) * | 1984-11-01 | 1991-09-05 | Nippon Denso Co | SLIDING CONTROL UNIT. |
| US4718733A (en) * | 1984-11-08 | 1988-01-12 | Honda Giken Kogyo Kabushiki Kaisha | Automatic reverse speed control device including pump and brake restricting means |
| DE3602430A1 (en) * | 1986-01-28 | 1987-07-30 | Teves Gmbh Alfred | BLOCK-PROTECTED HYDRAULIC BRAKE SYSTEM |
| DE3604697A1 (en) * | 1986-02-14 | 1987-08-20 | Teves Gmbh Alfred | BRAKE SYSTEM WITH SLIP CONTROL |
| DE3622556A1 (en) * | 1986-07-04 | 1988-01-07 | Teves Gmbh Alfred | HYDRAULIC BRAKE SYSTEM, ESPECIALLY FOR MOTOR VEHICLES |
| US4818038A (en) * | 1986-07-23 | 1989-04-04 | Alfred Teves Gmbh | Vehicular brake system with electronic anti-lock control and traction slip control |
| DE3627000C2 (en) * | 1986-08-08 | 1998-05-20 | Teves Gmbh Alfred | Brake system with slip control |
| DE3627809A1 (en) * | 1986-08-16 | 1988-02-18 | Teves Gmbh Alfred | HYDRAULIC BRAKE SYSTEM WITH ANTI-BLOCKING PROTECTION AND / OR DRIVE SLIP CONTROL |
| DE3629564A1 (en) * | 1986-08-30 | 1988-03-03 | Teves Gmbh Alfred | Brake system with slip control |
| GB2194962A (en) * | 1986-09-04 | 1988-03-23 | Tian Der Mao | Cathodic protection of metal surfaces |
| DE3640228A1 (en) * | 1986-11-25 | 1988-05-26 | Teves Gmbh Alfred | Hydraulic dual-circuit brake system for motor vehicles |
| DE3641475A1 (en) * | 1986-12-04 | 1988-06-16 | Teves Gmbh Alfred | Hydraulic brake system with slip control |
| DE3705311C2 (en) * | 1987-02-19 | 1998-08-20 | Teves Gmbh Alfred | Multi-circuit hydraulic brake system for motor vehicles |
| DE3705729A1 (en) * | 1987-02-23 | 1988-09-01 | Teves Gmbh Alfred | Hydraulic brake system for motor vehicles |
| DE3716514A1 (en) * | 1987-05-16 | 1988-11-24 | Teves Gmbh Alfred | Hydraulic Brake system for Motor Vehicles |
| DE3726798C2 (en) * | 1987-08-12 | 1996-04-25 | Teves Gmbh Alfred | Slip-controlled brake system |
| DE3827366A1 (en) * | 1988-08-12 | 1990-02-15 | Teves Gmbh Alfred | BLOCK-PROTECTED HYDRAULIC BRAKE SYSTEM |
| DE3834539A1 (en) * | 1988-10-11 | 1990-04-12 | Teves Gmbh Alfred | Method for the operation of a brake pressure control device |
-
1990
- 1990-05-17 DE DE19904015884 patent/DE4015884A1/en not_active Ceased
-
1991
- 1991-03-07 GB GB9104763A patent/GB2244107B/en not_active Expired - Fee Related
- 1991-05-13 FR FR9105754A patent/FR2662128B1/en not_active Expired - Fee Related
- 1991-05-16 JP JP3141151A patent/JPH04231250A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| GB2244107B (en) | 1994-09-14 |
| GB9104763D0 (en) | 1991-04-17 |
| GB2244107A (en) | 1991-11-20 |
| FR2662128B1 (en) | 1996-08-30 |
| FR2662128A1 (en) | 1991-11-22 |
| DE4015884A1 (en) | 1991-11-21 |
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