DE4019347A1 - Lock protected braking system for vehicle - has wheel brake with auxiliary power source with inlet valve and pressure pipe between - Google Patents
Lock protected braking system for vehicle - has wheel brake with auxiliary power source with inlet valve and pressure pipe betweenInfo
- Publication number
- DE4019347A1 DE4019347A1 DE19904019347 DE4019347A DE4019347A1 DE 4019347 A1 DE4019347 A1 DE 4019347A1 DE 19904019347 DE19904019347 DE 19904019347 DE 4019347 A DE4019347 A DE 4019347A DE 4019347 A1 DE4019347 A1 DE 4019347A1
- Authority
- DE
- Germany
- Prior art keywords
- spring
- wheel brake
- brake
- valve
- inlet 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.)
- Ceased
Links
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
- B60T8/42—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
-
- 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
- B60T8/341—Systems characterised by their valves
-
- 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
-
- 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
- B60T8/50—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 means for controlling the rate at which pressure is reapplied to or released from the brake
- B60T8/5018—Pressure reapplication using restrictions
- B60T8/5025—Pressure reapplication using restrictions in hydraulic brake systems
- B60T8/5031—Pressure reapplication using restrictions in hydraulic brake systems open systems
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F1/00—Springs
- F16F1/02—Springs made of steel or other material having low internal friction; Wound, torsion, leaf, cup, ring or the like springs, the material of the spring not being relevant
- F16F1/021—Springs made of steel or other material having low internal friction; Wound, torsion, leaf, cup, ring or the like springs, the material of the spring not being relevant characterised by their composition, e.g. comprising materials providing for particular spring properties
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Transportation (AREA)
- General Engineering & Computer Science (AREA)
- Temperature-Responsive Valves (AREA)
Abstract
Description
Die Erfindung bezieht sich auf eine blockiergeschützte, hydraulische Bremsanlage mit mindestens einer Radbremse und einer Hilfsdruckquelle, wobei in die Druckleitung zwischen der Hilfsdruckquelle und der Radbremse ein Einlaßventil eingesetzt und die Radbremse über ein Auslaßventil an eine Rücklaufleitung angeschlossen ist, wobei in die Leitung zwischen der Hilfsdruckquelle und dem Einlaßventil eine Differenzdruckbegrenzer eingefügt ist, dessen Steuerkolben sowohl von der Kraft einer Feder als auch vom Druck in der Radbremse in einem die Leitung öffnenden Sinne beaufschlagt ist, weiterhin ist ein temperaturempfindliches Element (Feder) vorgesehen.The invention relates to an anti-lock, hydraulic brake system with at least one wheel brake and an auxiliary pressure source, wherein in the pressure line between the auxiliary pressure source and the wheel brake an inlet valve used and the wheel brake via an outlet valve to a Return line is connected, being in the line between the auxiliary pressure source and the inlet valve Differential pressure limiter is inserted, the control piston both from the force of a spring and from the pressure in the Wheel brake applied in a way that opens the line is, is also a temperature sensitive element (Spring) provided.
Eine derartige Bremsanlage ist aus der Hauptanmeldung P 39 32 531 bekannt. Der Differenzdruckbegrenzer sorgt dafür, daß am Einlaßventil stets ein bestimmtes Druckgefälle herrscht. Es hat sich herausgestellt, daß auf diese Weise die Schaltgeräusche des Einlaßventils erheblich reduziert werden können. Es tritt aber auch ein Nachteil auf: Das Einlaßventil weist in seiner geöffneten Position eine Drosselcharakteristik auf. Dies hat einerseits konstruktive Gründe, da der Ventildurchgang nicht beliebig weit geöffnet werden kann. Andererseits bestehen aber auch Überlegungen regelungstechnischer Art: In der Druckaufbauphase einer Regelbremsung soll die Geschwindigkeit des Druckanstiegs begrenzt werden, damit der Druck nicht über ein bestimmtes Maß hinaus anwächst.Such a brake system is from the main application P 39 32 531 known. The differential pressure limiter ensures to ensure that there is always a certain pressure drop at the inlet valve prevails. It has been found that this way the switching noise of the intake valve is significantly reduced can be. But there is also a disadvantage: that Intake valve has one in its open position Throttle characteristic. On the one hand, this has constructive Reasons because the valve passage is not open as far as you want can be. On the other hand, there are also considerations control technology type: In the pressure build-up phase one Regular braking is said to be the rate of pressure increase be limited so that the pressure does not exceed a certain Dimension grows.
Wird nun während einer nicht geregelten Bremsung der Hauptbremszylinder schnell und heftig betätigt, so wird innerhalb einer kurzen Zeiteinheit eine große Druckmittelmenge durch die Drossel des Einlaßventils gedrückt. Damit entsteht ein Druckgefälle am Einlaßventil, was wiederum zur Folge hat, daß der Differenzdruckbegrenzer sperrt. Der Druckaufbau wird verzögert. Dieses Phänomen tritt insbesondere dann auf, wenn die Bremsflüssigkeit kalt ist und eine hohe Zähigkeit aufweist, dann reicht schon eine kleine Druckmittelgeschwindigkeit aus, um die kritische Druckdifferenz am Einlaßventil zu erzeugen.Is now during an uncontrolled braking of the Brake master cylinder operated quickly and violently, so a big one in a short unit of time Volume of pressure medium through the throttle of the intake valve pressed. This creates a pressure drop at the inlet valve, which in turn has the consequence that the differential pressure limiter locks. The build-up of pressure is delayed. This phenomenon occurs especially when the brake fluid is cold and has a high toughness, then one is enough small pressure medium speed to the critical Generate pressure difference at the inlet valve.
Mit einem temperaturempfindlichen, krafterzeugenden Element wird erreicht, daß einerseits die Vorteile eines Differenzdruckbegrenzers erhalten bleiben und andererseits bei einer nicht geregelten Bremsung im gesamten Temperaturbereich der Bremsflüssigkeit einen schnellen, ungehinderten Druckaufbau erzielt wird.With a temperature-sensitive, force-generating element is achieved on the one hand the advantages of a Differential pressure limiter remain and on the other hand in the case of non-controlled braking throughout Temperature range of the brake fluid a fast, unhindered pressure build-up is achieved.
In der Hauptanmeldung wird weiterhin vorgeschlagen eine Bimetallfeder zu verwenden. Die Erfindung schlägt als weitere Alternative vor, eine Feder zu verwenden, die aus einer Formgedächtnis-Legierung besteht.In the main application, one is also proposed To use bimetal spring. The invention proposes Another alternative is to use a spring made from a shape memory alloy.
Derartige Elemente sind z. B. beschrieben in "Legierungen mit Formgedächtnis", D. Stockel et al, Ehningen bei Böblingen:. expert-Verlag 1988.Such elements are e.g. B. described in "Alloys with Shape memory ", D. Stockel et al, Ehningen bei Böblingen :. expert publishing house 1988.
Eine mögliche Ausführungsform ist in der Figur dargestellt, die im folgenden beschrieben werden soll.A possible embodiment is shown in the figure, which will be described below.
Die Bremsanlage besteht aus einem Hauptbremszylinder 1 und einer Pumpe 2, die von einem Motor M angetrieben wird. Der Hauptbremszylinder 1 und die Pumpe 2 stehen über je eine Zweigleitung mit der Bremsleitung 3 in Verbindung, die zur Radbremse 23 führt. Diese wiederum steht über eine Rücklaufleitung 4 mit einem Vorratsbehälter 5 in Verbindung. In die Bremsleitung 3 ist ein Einlaßventil 6 eingefügt, das elektromagnetisch betätigt wird, wobei das Ventil 6 in seiner Grundstellung die Bremsleitung offen hält, bzw. eine leichte Drosselwirkung aufweist. In die Rücklaufleitung 4 ist ein Auslaßventil 7 eingefügt, das ebenfalls elektromagnetisch betätigt wird und in seiner Grundposition die Rücklaufleitung 4 sperrt. Zwischen dem Hauptbremszylinder 1 bzw. der Pumpe 2 und dem Einlaßventil 6 ist ein Differenzdruckbegrenzer 8 eingefügt. Ein Rückschlagventil 9 ist in einer Parallelleitung zum Einlaßventil 6 und zum Differenzdruckbegrenzer 8 vorgesehen.The brake system consists of a master brake cylinder 1 and a pump 2 , which is driven by a motor M. The master brake cylinder 1 and the pump 2 are each connected via a branch line to the brake line 3 , which leads to the wheel brake 23 . This in turn is connected via a return line 4 to a storage container 5 . In the brake line 3 , an inlet valve 6 is inserted which is actuated electromagnetically, the valve 6 holding the brake line open in its basic position or having a slight throttling effect. In the return line 4 , an outlet valve 7 is inserted, which is also actuated electromagnetically and blocks the return line 4 in its basic position. A differential pressure limiter 8 is inserted between the master brake cylinder 1 or the pump 2 and the inlet valve 6 . A check valve 9 is provided in a parallel line to the inlet valve 6 and the differential pressure limiter 8 .
Der Differenzdruckbegrenzer 8 weist ein Gehäuse 16 auf, in dem ein Steuerkolben 10 dichtend geführt ist.The differential pressure limiter 8 has a housing 16 in which a control piston 10 is sealingly guided.
Ein Schließkörper 11 ist innerhalb des Steuerkolben 10 angeordnet. Der Ventilsitz 12 ist am Steuerkolben 10 ausgebildet. Der Ventilschließkörper 11 liegt an einem Stößel 30 an, der am Boden des Gehäuses abgestützt ist. Am Stößel 30 ist ein Kragen 31 ausgebildet. Zwischen diesem Kragen und dem Gehäuse 10 ist die Feder 33 angeordnet. Die Feder 33 besteht aus einer Legierung mit Formgedächtnis.A closing body 11 is arranged within the control piston 10 . The valve seat 12 is formed on the control piston 10 . The valve closing body 11 rests on a tappet 30 which is supported on the bottom of the housing. A collar 31 is formed on the plunger 30 . The spring 33 is arranged between this collar and the housing 10 . The spring 33 is made of a shape memory alloy.
Am Ventil 11, 12 vorbei besteht eine Verbindung zwischen den Anschlüssen 13 und 14. Am Anschluß 13 ist die Pumpe 2 bzw. der Hauptbremszylinder 1 angeschlossen, während der Anschluß 14 dem Einlaßventil 6 zugeordnet ist.Past the valve 11 , 12 there is a connection between the connections 13 and 14 . The pump 2 or the master brake cylinder 1 is connected to the connection 13 , while the connection 14 is assigned to the inlet valve 6 .
Der Steuerkolben 10 wird von einer Steuerfeder 15 belastet, die einerseits am Steuerkolben 10 und andererseits am Boden des Gehäuses 16 abgestützt ist. Sie ist in einem Steuerraum 17 angeordnet, der über eine Zweigleitung 18 unmittelbar mit der Radbremse verbunden ist. Die Steuerfeder 15 und der Druck im Steuerraum 17 wirken nun derart auf den Steuerkolben 10 ein, daß das Ventil 11, 12 offen gehalten wird. Als Gegendruck wirkt der Druck im Auslaßraum 19, in den der Anschluß 14 mündet. Solange der Druck in Räumen 17 und 19 gleich ist, hält die Feder 15 das Ventil 11, 12 offen. Sobald der Druck im Raum 17 sinkt und die Differenz zwischen den Drücken in den Räumen 17 und 19 in der Lage ist, die Kraft der Feder 15 zu überwinden, schließt das Ventil 11, 12.The control piston 10 is loaded by a control spring 15 which is supported on the one hand on the control piston 10 and on the other hand on the bottom of the housing 16 . It is arranged in a control room 17 , which is connected directly to the wheel brake via a branch line 18 . The control spring 15 and the pressure in the control chamber 17 now act on the control piston 10 in such a way that the valve 11 , 12 is kept open. The pressure in the outlet space 19 , into which the connection 14 opens, acts as counter pressure. As long as the pressure in rooms 17 and 19 is the same, the spring 15 keeps the valve 11 , 12 open. As soon as the pressure in space 17 drops and the difference between the pressures in spaces 17 and 19 is able to overcome the force of spring 15 , valve 11 , 12 closes.
Das Ventil arbeitet nach dem folgenden Schema: In der gezeigten Grundstellung liegt der Steuerkolben 10 an der rechten Gehäusewand an. Der Stößel 30 hält den Ventilkörper 11 vom Ventilsitz 12 entfernt. Es besteht ein freier Ventildurchgang.The valve works according to the following scheme: In the basic position shown, the control piston 10 rests on the right housing wall. The plunger 30 keeps the valve body 11 away from the valve seat 12 . There is a free valve passage.
Sobald am Einlaßventil 6 ein Druckgefälle anliegt, das oberhalb des Schaltpunktes liegt, der durch die Steuerfeder 15 vorgegeben wird, wird der Steuerkolben 10 nach links verschoben, so daß der Ventilsitz 12 an den Schließkörper 11 angelegt wird. Der Ventildurchgang ist geschlossen.As soon as there is a pressure drop at the inlet valve 6 , which is above the switching point which is predetermined by the control spring 15 , the control piston 10 is shifted to the left, so that the valve seat 12 is applied to the closing body 11 . The valve passage is closed.
Bei der Feder 33 kann es sich z. B. um eine Zugfeder aus einer Nickel-Titan-Legierung handeln, die bei hoher Temperatur im Blockzustand vorliegt, d. h. die Windungen berühren einander. Ohne äußere Zugbelastung tritt keine temperaturabhängige Formänderung auf. Bei tiefen Temperaturen verlängert sich die Feder unter Einwirkung einer äußeren Zugkraft. Beim anschließenden Erwärmen läuft der sogenannte Einwegeffekt ab, wobei die Feder sich auf den Blockzustand zusammenzieht. Bei der Durchführung weiterer Temperaturzyklen in Verbindung mit einer äußeren Zugbelastung wiederholt sich die reversible Formänderung jeweils in gleicher Weise.The spring 33 can be, for. B. is a tension spring made of a nickel-titanium alloy, which is in the block state at high temperature, ie the turns touch each other. Without external tensile load, there is no temperature-dependent change in shape. At low temperatures, the spring extends under the influence of an external tensile force. During the subsequent heating, the so-called one-way effect takes place, whereby the spring contracts to the block state. When carrying out further temperature cycles in connection with an external tensile load, the reversible shape change is repeated in the same way.
Übertragen auf die vorliegende Erfindung führt die Ausdehnung der Feder 33 bei tiefen Temperaturen dazu, daß sich die Ventilkugel 11 immer weiter vom Ventilsitz 12 entfernt. Dies hat zur Folge, daß die Feder 15 stärker zusammengedrückt werden muß, um das Ventil 11, 12 zu schließen. Entsprechend hoch ist die Druckdifferenz, die sich am Differenzdruckbegrenzer einstellt.Applied to the present invention, the expansion of the spring 33 at low temperatures leads to the valve ball 11 moving further and further away from the valve seat 12 . This has the consequence that the spring 15 must be compressed more to close the valve 11 , 12 . The pressure difference that arises at the differential pressure limiter is correspondingly high.
Dies hat zur Folge, daß sich der Differenzdruck mit der Temperatur kontinuierlich ändert. Wird das Material so ausgewählt, daß die Formänderung bei einer bestimmten Sprungtemperatur einsetzt, z. B. bei -20° Celsius so läßt sich ein Temperaturbereich festlegen, in der die Temperaturabhängigkeit vorliegen soll.This has the consequence that the differential pressure with the Temperature changes continuously. Will the material be like this selected that the shape change at a particular Jump temperature starts, e.g. B. at -20 ° Celsius define a temperature range in which the Temperature dependency should be present.
Dehnt sich die Feder 33 so weit aus, daß der Kolben 10 an einen Anschlag fährt, bevor das Ventil 11, 12 schließt, so ist ein steter Druckmitteldurchfluß durch den Differenzdruckbegrenzer 8 garantiert, so daß auch bei tiefen Temperaturen keine Behinderung des Druckaufbaues bei einer Normalbremsung auftritt.If the spring 33 expands so far that the piston 10 moves to a stop before the valve 11 , 12 closes, a constant pressure medium flow through the differential pressure limiter 8 is guaranteed, so that even at low temperatures there is no impediment to the build-up of pressure during normal braking occurs.
BezugszeichenlisteReference symbol list
1 Hauptbremszylinder
2 Pumpe
3 Bremsleitung
4 Rücklaufleitung
5 Vorratsbehälter
6 Einlaßventil
7 Auslaßventil
8 Differenzdruckbegrenzer
9 Rückschlagventil
10 Steuerkolben
11 Schließkörper
12 Ventilsitz
13 1. Anschluß
14 2. Anschluß
15 Steuerfeder
16 Gehäuse
17 Steuermann
18 Zweigleitung
19 Auslaßraum
20 Feder
21 Blattfeder
21′ Blattfeder
22 Führungsteil
22′ Führungsteil
23 Radbremse
30 Stößel
31 Kragen
32 Tellerfederpaket
33 Feder 1 master brake cylinder
2 pump
3 brake line
4 return line
5 storage containers
6 inlet valve
7 exhaust valve
8 differential pressure limiters
9 check valve
10 control pistons
11 closing body
12 valve seat
13 1. Connection
14 2. Connection
15 control spring
16 housing
17 helmsman
18 branch line
19 outlet space
20 spring
21 leaf spring
21 ′ leaf spring
22 guide part
22 ′ guide part
23 wheel brake
30 pestles
31 collar
32 disc spring package
33 spring
Claims (5)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19904019347 DE4019347A1 (en) | 1989-09-29 | 1990-06-19 | Lock protected braking system for vehicle - has wheel brake with auxiliary power source with inlet valve and pressure pipe between |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19893932531 DE3932531A1 (en) | 1988-12-19 | 1989-09-29 | Antilock vehicle braking system - has pressure differential limiter biased open by spring force, wheel brake pressure and temp.-dependent force |
| DE19904019347 DE4019347A1 (en) | 1989-09-29 | 1990-06-19 | Lock protected braking system for vehicle - has wheel brake with auxiliary power source with inlet valve and pressure pipe between |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE4019347A1 true DE4019347A1 (en) | 1992-01-02 |
Family
ID=25885656
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19904019347 Ceased DE4019347A1 (en) | 1989-09-29 | 1990-06-19 | Lock protected braking system for vehicle - has wheel brake with auxiliary power source with inlet valve and pressure pipe between |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE4019347A1 (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4203878A1 (en) * | 1992-02-11 | 1993-08-12 | Teves Gmbh Alfred | SLIP-CONTROLLED BRAKE SYSTEM |
| DE4322731A1 (en) * | 1993-07-08 | 1995-01-12 | Leybold Ag | Valve for regulating fluid flows with an actuator made of electrically heatable, shape-remembering material |
| EP0698538A3 (en) * | 1994-08-26 | 1996-04-24 | Nippon Denso Co | Automotive brake fluid pressure control apparatus |
| EP0696533A3 (en) * | 1994-08-11 | 1996-11-06 | Nippon Denso Co | Automotive brake fluid pressure control apparatus |
| AU696863B2 (en) * | 1994-07-15 | 1998-09-17 | Daewoo Electronics Co., Ltd. | Valve utilizing shape memory alloys and an anti-lock brake system with the valve |
| CN107300424A (en) * | 2016-04-15 | 2017-10-27 | 通用汽车环球科技运作有限责任公司 | Can reseting sensor component and system |
| DE102019218449A1 (en) * | 2019-11-28 | 2021-06-02 | Robert Bosch Gmbh | Brake system for a vehicle, with a secondary actuator which has a deformation element made of shape memory material |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3644304A1 (en) * | 1985-12-25 | 1987-07-02 | Nippon Denso Co | BRAKE SYSTEM FOR A CYCLE VEHICLE |
| DE3838929A1 (en) * | 1987-11-19 | 1989-06-01 | Akebono Brake Ind | ANTI-BLOCKING CONTROL SYSTEM FOR MOTOR VEHICLES |
| DE3838571A1 (en) * | 1988-11-14 | 1990-05-17 | Lucas Ind Plc | ANTI-BLOCKED BRAKE SYSTEM |
-
1990
- 1990-06-19 DE DE19904019347 patent/DE4019347A1/en not_active Ceased
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3644304A1 (en) * | 1985-12-25 | 1987-07-02 | Nippon Denso Co | BRAKE SYSTEM FOR A CYCLE VEHICLE |
| DE3838929A1 (en) * | 1987-11-19 | 1989-06-01 | Akebono Brake Ind | ANTI-BLOCKING CONTROL SYSTEM FOR MOTOR VEHICLES |
| DE3838571A1 (en) * | 1988-11-14 | 1990-05-17 | Lucas Ind Plc | ANTI-BLOCKED BRAKE SYSTEM |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4203878A1 (en) * | 1992-02-11 | 1993-08-12 | Teves Gmbh Alfred | SLIP-CONTROLLED BRAKE SYSTEM |
| WO1993015940A1 (en) * | 1992-02-11 | 1993-08-19 | Itt Automotive Europe Gmbh | Slip-controlled brake system |
| US5460436A (en) * | 1992-02-11 | 1995-10-24 | Itt Automotive Europe Gmbh | Slip-controlled brake system |
| DE4322731A1 (en) * | 1993-07-08 | 1995-01-12 | Leybold Ag | Valve for regulating fluid flows with an actuator made of electrically heatable, shape-remembering material |
| AU696863B2 (en) * | 1994-07-15 | 1998-09-17 | Daewoo Electronics Co., Ltd. | Valve utilizing shape memory alloys and an anti-lock brake system with the valve |
| EP0696533A3 (en) * | 1994-08-11 | 1996-11-06 | Nippon Denso Co | Automotive brake fluid pressure control apparatus |
| US5636907A (en) * | 1994-08-11 | 1997-06-10 | Nippondenso Co., Ltd. | Automotive brake fluid pressure control apparatus |
| EP0698538A3 (en) * | 1994-08-26 | 1996-04-24 | Nippon Denso Co | Automotive brake fluid pressure control apparatus |
| US5584543A (en) * | 1994-08-26 | 1996-12-17 | Nippondenso Co., Ltd. | Automotive brake fluid pressure control apparatus |
| CN107300424A (en) * | 2016-04-15 | 2017-10-27 | 通用汽车环球科技运作有限责任公司 | Can reseting sensor component and system |
| DE102019218449A1 (en) * | 2019-11-28 | 2021-06-02 | Robert Bosch Gmbh | Brake system for a vehicle, with a secondary actuator which has a deformation element made of shape memory material |
| DE102019218449B4 (en) * | 2019-11-28 | 2021-06-10 | Robert Bosch Gmbh | Brake system for a vehicle, with a secondary actuator which has a deformation element made of shape memory material |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| DE69011310T2 (en) | Expansion valve. | |
| EP0446309B1 (en) | Anti-lock hydraulic brake system | |
| DE69405340T2 (en) | Method and device for regulating the flow through a branch housing and system equipped with such a device for regulating the charge air of an internal combustion engine | |
| DE3842699A1 (en) | Antilock hydraulic brake system | |
| DE4019347A1 (en) | Lock protected braking system for vehicle - has wheel brake with auxiliary power source with inlet valve and pressure pipe between | |
| DE102013207594A1 (en) | Valve for a cold gas generator and air bag system | |
| WO1990005657A1 (en) | Antilock braking system | |
| DE1881400U (en) | HYDRAULIC BRAKE FOR MOTOR VEHICLES. | |
| DE4446152C2 (en) | Heating system, in particular for motor vehicles | |
| DE10207036A1 (en) | Electronically-controlled automotive coolant thermostat | |
| DE69102726T2 (en) | Electrically operated pressure control device for hydraulic switching. | |
| DE19938285A1 (en) | Device for regulating the lubricating oil pressure of an internal combustion engine | |
| DE2737677C2 (en) | Device for regulating the flow rate of compressors | |
| US2340113A (en) | Master cylinder and piston construction | |
| DE4429211A1 (en) | Solenoid valve for vehicle hydraulic ABS brakes | |
| DE2938468A1 (en) | INERTIA METERING VALVE FOR THE BRAKES OF A VEHICLE | |
| DE3517958C2 (en) | Pressure-controlled valve, in particular for motor vehicle brake systems with brake slip control | |
| EP0511326B1 (en) | Brake-pressure control system | |
| GB1382593A (en) | Hydraulic flow control vavle assemblies | |
| DE10358321A1 (en) | Hydraulic pedal simulation device for simulating reaction effect of brake pedal for operating vehicle brake system has hydraulic system that is hydraulically decoupled from brake system | |
| DE4016748A1 (en) | Pressure controller for vehicular antilock and antislip braking - includes construction in line from master cylinder to wheel brake cylinder with pressure limited by valve | |
| GB1215806A (en) | Improvements in or relating to brake pressure control valves | |
| DE19842155A1 (en) | Valve device | |
| DE3827367A1 (en) | Antilock hydraulic brake system | |
| DE3932531A1 (en) | Antilock vehicle braking system - has pressure differential limiter biased open by spring force, wheel brake pressure and temp.-dependent force |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| AF | Is addition to no. |
Ref country code: DE Ref document number: 3932531 Format of ref document f/p: P |
|
| OM8 | Search report available as to paragraph 43 lit. 1 sentence 1 patent law | ||
| 8127 | New person/name/address of the applicant |
Owner name: ITT AUTOMOTIVE EUROPE GMBH, 60488 FRANKFURT, DE |
|
| 8131 | Rejection |