GB2201208A - Hydraulic brake system for use with an automotive vehicle - Google Patents
Hydraulic brake system for use with an automotive vehicle Download PDFInfo
- Publication number
- GB2201208A GB2201208A GB08803527A GB8803527A GB2201208A GB 2201208 A GB2201208 A GB 2201208A GB 08803527 A GB08803527 A GB 08803527A GB 8803527 A GB8803527 A GB 8803527A GB 2201208 A GB2201208 A GB 2201208A
- Authority
- GB
- United Kingdom
- Prior art keywords
- brake
- pressure
- valve
- pump
- shut
- 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.)
- Granted
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
- B60T8/44—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
- B60T8/441—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 using hydraulic boosters
-
- 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
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Regulating Braking Force (AREA)
Abstract
For brake skid control of the wheel brakes of a dual-circuit brake system for use with an automotive vehicle, shut-off valves (13, 14) are positioned in the brake pipes (4, 7) leading from a tandem master brake cylinder (1) to the wheel brakes (5, 6; 8, 9) which shut-off valves are able to separate the tandem master brake cylinder (1) from the wheel brakes (5, 6; 8, 9). For ensuring the supply of pressure fluid to the wheel brakes (5; 6; 8, 9) during the brake skid control, a dual pump (21, 22) is provided with two separate pump circuits (28, 30) the initial pressure of which, with the aid of pressure control valves (17, 18) is limited to a maximum value corresponding to the pressure in the tandem master brake cylinder (1). The two pump circuits (28, 30) area respectively connected to brake pipes (4, 7) and, through regulating valves (32, 33) controllable by the brake skid control means, may be connected to the intake lines (24, 25) of the dual pump (21, 22). Through control of the regulating valves (32, 33), the pressure in the brake pipes (4, 7) is so regulated as to preclude locking of the wheels. <IMAGE>
Description
HYDRAULIC BRAKE SYSTEM FOR USE WITH
AN AUTOMOTIVE VEHICLE
This invention relates to a hydraulic brake system for an automotive vehicle, comprising a master brake cylinder, a brake pipe leading from the master brake cylinder to a group of wheel brakes, a shut-off valve switched into the brake pipe and capable of separating the master brake cylinder from the wheel brakes, a regulating valve coupled behind the shut-off valve and capable of connecting the wheel brake cylinders to a return conduit leading to a non-pressurised reservoir, and a brake skid control means controlling the sht-off valve and the regulating valve.
In brake -systems of this kind, the shut-off valve and the regulating valve, for brake skid control purposes, are intermittently driven. During each driving phase, pressure fluid from the wheel brakes is discharged to a reservoir thereby to decrease the brake pressure. Between the driving phases, a brake pressure increase is effected through the supply of pressure fluid from the brake pipes.
As the amount of pressure fluid required cannot be withdrawn from the master brake cylinder, a conventional brake system as suggested by DE-OS 3040562 includes a hydraulic energy supply comprising a pump and a pressure accumulator from which pressure fluid at an auxiliary pressure controlled in proportion to the brake pressure is fed, through a valve controlled by the brake skid control means, into the intake chamber of the master brake cylinder, from where it is passed, through the piston cup and the intake valve of the master brake cylinder, into the working chamber, then to the brake pipes. This prior art arrangement is very costly for which reason it has been employed only with hydraulic brake systems wherein also a hydraulic brake force booster is energised by the energy supply.Moreover, the known arrangement requires additional means to provide for the relief of the master cylinder piston when pressure is applied to the intake chamber, and to avoid slipthrough of the brake pedal upon commencement of the brake slip control.
P3636778.8 describes a hydraulic brake system, wherein the pressure fluid required for the brake skid control is delivered by a pump actuated by the brake skid control means, the initial pressure of which pump is controllable by a pressure-regulating valve in response to the actuating force exerted on the master brake cylinder, and the output of which, through a connection valve controlled by the brake skid control means, between the shut-off valve and the regulating valve, can be connected to the brake pipes, the connection valve and the regulating valve being alternately switchable. During the phase of pressure decrease, the connection valve, in this known brake system, is closed so that the pump operates against the full pressure predetermined by the pressure-regulating valve.
It is an object of the present invention to provide a hydraulic brake system of the kind referred to that is simple in construction and wherein the pressure fluid supply for the brake skid control does not interfere with the master brake cylinder, thereby permitting master brake cylinders and booster systems conventionally used for brake pressure generation to be maintained unmodified.
According to the invention there is provided a hydraulic brake system for an automotive vehicle, comprising a master brake cylinder, a brake pipe leading from the master brake cylinder to a group of wheel brakes, a shut-off valve switched into the brake pipe and capable of separating the master brake cylinder from the wheel brakes, a regulating valve coupled behind the shut-off valve and capable of connecting the wheel brake cylinders to a return conduit leading to a non-pressurised reservoir, and a brake skid control means controlling the shut-off valve and the regulating valve, characterised by at least one pump actuatable by the brake skid control means, the initial pressure of such pump being regulated by a pressure-regulating valve in response to the actuating force exerted on- the master brake cylinder, the pump outlet being directly in communication with the brake pipe, through a check valve, between the shut-off valve and the regulating valve.
It is thereby achieved that all the components required for brake skid control are connected directly to the brake pipes thereby permitting conventional means of any desired type used for the brake pressure generation to be employed unaltered.
Moreover, in the brake system of the invention, the mechanical efforts required for performing a brake skid control, are unusually low. For example, in addition to a pump actuated by electromotive force, a pressure-controlling valve, a check valve, a shut off vaLve and a regulating valve will be required.
The way of operation of these components is simple and can be realised already by a simple valve design. As in the brake system of the invention, the structural components of the brake skid control means are in communication with the master brake cylinder and the wheel brakes only through the brake pipes, it is, moreover, possible, through a simple mounting process, subsequently to furnish already existing brake systems with a brake skid control means.
An essential feature of the brake system of the invention contributing to a simplification thereof, resides in that, for decreasing the brake pressure in the wheel brakes connected to the brake pipes by opening the control valves, also the pressure on the pump outlet is reduced along with the wheel brake pressure. This will permit elimination of a special connection valve separating the pump outlet, in the pressure decrease phase, from the wheel brakes.
Moreover, the pump rating and, hence, the energy requirement, during brake skid control, is reduced.
Another advantage of the brake system of the invention resides in a good pedal feeling during the brake skid control since, during that process, the pressure chamber of the master brake cylinder is blocked, through the shut-off valve, and the brake pedal held completely quiet in its actuating position. Through separation of the master brake cylinder from the brake pipes, moreover, an adequate reseve volume and a reserve stroke, respectively, are insured in case of a failure of the brake skid control.
According to an advantageous form of embodiment of the invention the pressure-regulating valve of the pump can be hydraulically controllable by the pressure in the master cylinder, with the pressure at the pump outlet being adjusted to the brake pressure in the master brake cylinder.
In the event that in the brake system of the invention two wheel brakes are connected to a brake pipe and an independent brake skid control of the two wheel brakes is desired, in an embodiment of the invention in which two wheels are connected to a brake pipe, the connection between the brake pipe and one wheel brake can be blocked by a blocking valve of the brake skid control means. While the brake pressure of the wheel brake directly in communication with the brake pipes, through intermittent pressure decrease and pressure increase in the brake pipes, can be regulated through the regulating valve, the brake pressure of the other wheel brake can independently be controlled in subordination thereto in that, through a control of the blocking valve independent of the regulating valve, the pressure increase and the pressure decrease will become effective only in part.
An equal-rank control of the two wheel brakes connected to a brake pipe, in accordance with another embodiment of the invention, can be achieved in that each wheel brake, through a special blocking valve of its on, is in communication with the brake pipes. The regulating valve and the corresponding blocking valve are then driven to control the brake skid on one or the other wheel brake.
The invention may be used with single- and dual-circuit brake systems. Advantageously, the invention can also be employed with dual-circuit brake systems, wherein the wheel brakes of a vehicle axle are respectively connected to one of the two brake pipes independently of one another. The brake system of the invention, hence, permits a brake skid control for the wheel brakes of a single vehicle axle, with only minor mechanical efforts being involved. This may be useful, for example, in light-cargo trucks to avoid over-braking of the rear axle, as in view of the high axial load differences between empty and loaded conditions, other types of control systems may not be effective to control the brake force on the rear axle.
If, in the practice of the invention, it is intended to control, in a dual-circuit brake system, the wheel brakes of both brake circuits, it is possible, according to another embodiment of the invention, to provide a dual pump having two independent pump circuits and being switchable through the brake skid control means, with each of the pump circuits being connected, through a check valve, between a shut-off valve and a regulating valve, to the other of the two brake pipes, a pressure-regulating valve being provided at the output of each pump circuit for regulating the initial pressure, the control input of the pressure regulating valve, between the brake pressure generator and the shut-off valve, being connected to the brake pipes in communication with the pump circuit.Thanks to the use of the dual pump as provided according to the invention and having two independent pump circuits, the number of valves required for the brake skid control can be minimised, at the same time ensuring high safety against failure.
To simplify the brake system, according to another embodiment of the invention, the regulating valve for controlling the brake pressure in the brake pipes is intermittently driven with the pump drive switched on. In this manner, a regulation of the pressure in the brake pipes can be achieved alone with the aid of the regulating valve or valves thereby to permit elimination of the hydraulicallydriven pressure-regulating valve on the pump output.
An embodiment of the invention will now be described by way of example with reference to the single figure of the drawings which depicts a brake system, wherein the brake pressure generator is a tandem master brake cylinder 1 including a vacuum brake force booster 2 actuable by a brake pedal 3.
A first brake pipe 4 leads from the tandem master brake cylinder 1 to a first group of wheel brakes 5,6. A second brake pipe 7 leads from the tandem master brake cylinder 1 to a second group of wheel brakes 8,9. The wheel brakes 5,8 are located on a first axle, while the wheel brakes 6,9 are disposed on a second axle of a vehicle. The intake chambers of the tandem master brake cylinder 1 are, through separate Lines 10,11, in communication with separate chambers of an intake reservoir 12.
Two electromagnetically-actuable shut-off valves 13,14 are switched into the respective brake pipes 4,7, which shut-off valves, in their de-energised basic position, are open, and, in their switched position, close the brake pipe. Between the tandem master brake cylinder 1 and the shut-off valves 13,14, control conduits 15,16, branch off from brake pipes 4,7 and lead to the control chambers of two pressure control valves 17,18. The pressure control valves 17,18 are connected, through conduits 19,20, to the outputs of two pumps 21,22, driven by a common electromotor 23. The intake side of the pump 21, is connected through an intake conduit 24, to the line 10, while the intake side of pump 22 is connected, through intake conduit 25, to the line 11. The outputs of the pressure-regulating valves 17,18 are equally in communication with the intake lines 24,25 through conduits 26,27.The pressure at the output of the pumps 21,22, is limited by the pressure control valves 17,18 to a maximum value in proportion to the pressure in the control conduits 15,16.
The output of the pump 21 is communicated to the brake pipe 4 through a pressure conduit 28, provided in which is a check valve 29, between the shut-off valve 13 and the wheel brakes 5,6.
Similarly, the output of the pump 22 is communicated to the brake pipe 7 through a pressure conduit 30, in which is disposed a check valve 31, between the shut-off valve 14 and the wheel brakes 8,9. On the output side of the check valves 29,31, electromagnetically-actuable regulating valves 32,33 are connected to the pressure conduits 28,30, which regulating valves, in their basic position, are closed, while, in their switched position, they connect the pressure conduits 28,30 to the conduits 26,27 teading to the intake lines 24,25.
While the wheel brakes 5,8 are directly in communication with the brake pipes 4,7 and the pressure conduits 28,30, the wheel brakes 6,9, through electromagnetically-actuable blocking valves 34,35, open in their basic position, are separable from the brake pipes 4,7.
The shut-off valves 13,14, the regulating valves 32,33 and the blocking valves 34,35 are controllable by an electrical brake skid control means (not shown). Also, the electromotor 23, through the brake skid control means, can be connected to a power source. The brake skid control means, conventionally, monitors, with the aid of sensors, the rotating movement of the wheel brakes, recognising therefrom when a wheel brake tends to lock, with the regulation operating on the select low" principle, meaning that the brake skid control will commence once a locking tendency is detected on one of the wheel brakes. In that case, the electromotor 23 will be started to actuate pumps 21,22.At the same time, the shut-off valves 13,14 are switched into the blocking position such that the pressure prevailing prior to commencement of the control in the tandem master brake cylinder will be maintained also during commencement of the control while the brake pedal 3 is held in its actuating position. Once a locking tendency of the wheel brake 5 occurs, the regulating valve 32, upon commencement of the control, is first switched into the open position thereby allowing the pressure in the wheel brake 5, through the brake conduit 4, the pressure conduit 28, the line 26 to decrease toward the intake line 24 to achieve a reduced brake effect on the wheel brake 5. The actuating pressure in the wheel brake 6 can be maintained, through switching of the blocking valve 34, into its closing position.
As the pressure conduit 28, through the open regulating valve 32, is in communication with the intake Line 24, in that phase of regulation, no pressure can build up at the output of the pump 21.
The pressure regulating valve 17 will remain closed.
As the wheel brakes 8,9, upon commencement of the brake skid control, did not tend to block, the regulating valve 33 remains closed, thereby causing the prevailing pressure to be maintained in the brake piping 7 and the pressure conduit 30. Thanks to the application of pressure by the pressureregulating valve 18, through the control line 16, a pressure is developed at the output of the pump 22 which pressure, depending on the design of the pressure regulating valve 18, corresponds to the brake pressure in the control line 16 or can be in excess thereof. Once this pressure is reached at the output of the pump 22, the pressure-regulating valve 18 opens to discharge the pressure fluid delivered by the pump 22, in a restricted flow, through the line 27, into the intake line 25.
The phase of pressure decrease is followed by a phase of pressure increase during which the pressure on the wheel brake 5 is re-increased. For that purpose, the regulating valve 32 is restored from the opening position into the closing position thereby discontinuing the connection between the output of the pump 21 and the intake line 24. The flow delivered by the pump 21 is thereby directly fed to the wheel brake 5, causing a renewed rise in the brake pressure to the maximum value provided by the pressure-regulating valve 17.
Once the pressure increase on the wheel brake 5 again results in a blocking tendency, the control cycle as described will start anew and will be permanently repeated until the braking operation, through releasing the brake pedal 3, is terminated or the automotive vehicle has come to a standstill.
If the control, during a braking operation, is terminated because the wheel brake 5 no longer tends to block, the shut-off valve 13 is restored to its open position only after the brake pressure in the section of the brake pipe 4 connected to the wheel brake 5 corresponds to the pressure in the tandem master brake cylinder 1.
The brake pressure on the wheel brakes 8,9, upon occurrence of a blocking risk, is controlled in analogy thereto, with the shut-off valve 14 and the regulating valve 33 being driven.
The blocking valves 34,35 are needed to enable, during a brake skid control of the wheel brakes 5,6, the brake pressure on the wheel brakes 6,9 to be kept constant or also controlled independently of the regulation of the wheel brakes 5,8. In the latter instance, the blocking valves 34,35 are switched independently of the regulating valves 32,33, with the regulating phases predetermined by the conrol valves 32,33 becoming effective only in part. A brake skid control of the wheel brakes 6,9 alone will not be possible with the system as shown in the drawing, as the wheel brakes 5,8 are in permanent communication with the inputs of the blocking valves 34,35. This can only be realised if the inputs of the wheel brakes 5,8 are equally blockable with the aid of electromagnetically controllable blocking valves vis-a-vis the brake pipes 4 and 7, respectively.
The brake system described has the advantage that it is simple in construction and does not interfere with the brake-actuating system. For an uncontrolled applying of the brake, all kinds of known devices for brake pressure generation and brake force boosting may, therefore, be employed, and the aggregates for the brake skid control can also readily be subsequently assembled into an automotive vehicle.
Claims (7)
1. A hydraulic brake system for an automotive vehicle, comprising a master rake cylinder, a brake pipe leading from the master brake cylinder to a group of wheel brakes, a shut-off valve switched into the brake pipe and capable of separating the master brake cylinder from the wheel brakes, a regulating valve coupled behind the shut-off valve and capable of connecting the wheel brake cylinders to a return conduit leading to a non-pressurised reservoir, and a brake skid control means controlling the shut-off valve and the regulating valve, characterised by at least one pump (21,22) actuatable by the brake skid control means, the initial pressure of such pump being regulated by a pressure-regulating valve (17,18) in response to the actuating force exerted on the master brake cylinder (1), the pump outlet (28,30) being directly in communication with the brake pipe (4,7), through a check valve (29,31), between the shut-off valve (13,14) and he regulating valve (32,33).
2. A brake system according to cLaim 1, characterised in that the pressure-regulating valve (17,18) of the pump (21,22) is hydraulically controllable by the pressure in the master brake cylinder (1), the pump pressure at the pump outlet being adjusted to the brake pressure in the master brake cylinder.
3. A brake system according to claim I or 2, characterised in that connected to a brake pipe (4,7) are two wheel brakes (5,6 and 8,9, respectively), the connection to a wheel brake (6,9) being blockable by a blocking valve (34,35) of the brake skid control means.
4. A brake system according to claim 3; characterised in that the connection to the second wheel brake (5,8) is blockable by a second blocking valve of the brake skid control means.
5. A brake system according to any one of the preceding claims, wherein the brake system is in the form of a dual-circuit brake system provided with two brake pipes (4,7) independent of one another and each including a shut-off valve (13,14), a regulating valve (32,33) and a group of wheel brake cylinders (5,6 and 8,9, respectively), characterised by a dual pump (21,22) actuable by the brake skid control means and comprising two independent pump circuits (28,30) each of which is connected, through a check valve (29; ;31), between the shut-off valve (13,14) and the regulating valve (32,33), to a second one of the two brake pipes (4,7), and by a pressure-regul-ating valve (17,18) located at the output of each pump circuit~(28,30) for regulating the initial pressure, the control input of the pressure-regulating valve, between the brake pressure generator (1) and the shut-off valve (13,14), being in communication with the brake pipes (4,7) connected to the pump circuit.
6. A brake system according to any one of claims 1,3,4 or 5, characterised in that the regulating valve (32,33) for regulating the brake pressure in the brake pipes (4,7) is intermittently drivable with the pump drive switched on.
7. A hydraulic brake system for an automotive vehicle substantially as described with reference to the accompanying drawings.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19873705311 DE3705311C2 (en) | 1987-02-19 | 1987-02-19 | Multi-circuit hydraulic brake system for motor vehicles |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| GB8803527D0 GB8803527D0 (en) | 1988-03-16 |
| GB2201208A true GB2201208A (en) | 1988-08-24 |
| GB2201208B GB2201208B (en) | 1991-04-03 |
Family
ID=6321341
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB8803527A Expired - Lifetime GB2201208B (en) | 1987-02-19 | 1988-02-16 | Hydraulic brake system for use with an automotive vehicle |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP2834127B2 (en) |
| DE (1) | DE3705311C2 (en) |
| FR (1) | FR2611177B1 (en) |
| GB (1) | GB2201208B (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2210424A (en) * | 1987-09-24 | 1989-06-07 | Teves Gmbh Alfred | Brake system with anti-locking and/or traction slip control |
| EP0442089A2 (en) * | 1990-02-13 | 1991-08-21 | Robert Bosch Gmbh | Brake system |
| GB2244107A (en) * | 1990-05-17 | 1991-11-20 | Teves Gmbh Alfred | Anti-lock controlled brake system |
| EP0560197A1 (en) * | 1992-03-05 | 1993-09-15 | Tokico Ltd. | Brake fluid pressure control apparatus for antiskid brakes |
| US5303990A (en) * | 1991-07-03 | 1994-04-19 | Tokico Ltd. | Brake fluid pressure control apparatus |
| US5700067A (en) * | 1995-09-12 | 1997-12-23 | Fahrzeugtechnik Ebern Gmbh | Hydraulic braking system, especially for motor vehicles |
| US5816668A (en) * | 1995-09-12 | 1998-10-06 | Fahrzeugtechnik Ebern Gmbh | Valve apparatus for a non-muscular-energy-assisted brake circuit in a hydraulic brake system |
| CN107531216A (en) * | 2015-03-16 | 2018-01-02 | 爱皮加特股份公司 | The brake apparatus of (MUX 2.0) is adjusted with the new type multipath of each brake apparatus one outlet valve or each brake circuit one outlet valve and for pressure controlled method |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3734903C2 (en) * | 1987-10-15 | 1996-12-19 | Teves Gmbh Alfred | Anti-lock hydraulic motor vehicle brake system |
| DE19949816A1 (en) | 1999-10-15 | 2001-04-19 | Bosch Gmbh Robert | Actuator unit for wheel brakes of road vehicle, has electro-hydraulic valve circuit for anti-lock control, with power provided by motor driven pump, and pressure regulated by controller coupled to brake pedal |
| WO2001054956A1 (en) * | 2000-01-28 | 2001-08-02 | Continental Teves Ag & Co. Ohg | Electrohydraulic vehicle braking system |
| DE102006037171A1 (en) * | 2006-08-09 | 2008-02-14 | Robert Bosch Gmbh | Slip-controlled hydraulic vehicle brake system |
| JP5848980B2 (en) * | 2012-02-09 | 2016-01-27 | 日立オートモティブシステムズ株式会社 | Brake device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2170286A (en) * | 1985-01-25 | 1986-07-30 | Teves Gmbh Alfred | Brake system with slip control |
| GB2173559A (en) * | 1985-04-03 | 1986-10-15 | Teves Gmbh Alfred | Vehicular hydraulic brake system with anti-locking arrangement |
| GB2187521A (en) * | 1986-03-06 | 1987-09-09 | Teves Gmbh Alfred | Hydraulic brake system for automotive vehicles |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3010639A1 (en) * | 1980-03-20 | 1981-09-24 | Alfred Teves Gmbh, 6000 Frankfurt | HYDRAULIC BRAKING SYSTEM WITH AN ANTI-BLOCKING CONTROL SYSTEM |
| DE3040562A1 (en) * | 1980-10-28 | 1982-05-27 | Alfred Teves Gmbh, 6000 Frankfurt | FOREIGN ENERGY FEED BRAKE SLIP CONTROL SYSTEM OF A HYDRAULIC VEHICLE BRAKE SYSTEM |
| DE3247497A1 (en) * | 1982-12-22 | 1984-06-28 | Alfred Teves Gmbh, 6000 Frankfurt | HYDRAULIC TWO-CIRCUIT BRAKE SYSTEM |
| JPS61282159A (en) * | 1985-06-06 | 1986-12-12 | Nippon Denso Co Ltd | Antiskid controller |
| DE3526556A1 (en) * | 1985-07-25 | 1987-01-29 | Teves Gmbh Alfred | BRAKE SYSTEM WITH HYDRAULIC BRAKE FORCE REINFORCEMENT |
| DE3527190A1 (en) * | 1985-07-30 | 1987-02-12 | Teves Gmbh Alfred | BRAKE SYSTEM WITH SLIP CONTROL |
| DE3636778C2 (en) * | 1986-10-29 | 1995-04-20 | Teves Gmbh Alfred | Hydraulic brake system for motor vehicles |
-
1987
- 1987-02-19 DE DE19873705311 patent/DE3705311C2/en not_active Expired - Lifetime
-
1988
- 1988-01-26 FR FR8800870A patent/FR2611177B1/en not_active Expired - Fee Related
- 1988-02-15 JP JP63031024A patent/JP2834127B2/en not_active Expired - Lifetime
- 1988-02-16 GB GB8803527A patent/GB2201208B/en not_active Expired - Lifetime
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2170286A (en) * | 1985-01-25 | 1986-07-30 | Teves Gmbh Alfred | Brake system with slip control |
| GB2173559A (en) * | 1985-04-03 | 1986-10-15 | Teves Gmbh Alfred | Vehicular hydraulic brake system with anti-locking arrangement |
| GB2187521A (en) * | 1986-03-06 | 1987-09-09 | Teves Gmbh Alfred | Hydraulic brake system for automotive vehicles |
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2210424A (en) * | 1987-09-24 | 1989-06-07 | Teves Gmbh Alfred | Brake system with anti-locking and/or traction slip control |
| US4883328A (en) * | 1987-09-24 | 1989-11-28 | Alfred Teves Gmbh | Brake system with anti-locking and/or traction slip control |
| GB2210424B (en) * | 1987-09-24 | 1992-02-05 | Teves Gmbh Alfred | Brake system with anti-locking and/or traction slip control |
| EP0442089A2 (en) * | 1990-02-13 | 1991-08-21 | Robert Bosch Gmbh | Brake system |
| EP0442089A3 (en) * | 1990-02-13 | 1992-05-06 | Robert Bosch Gmbh | Brake system |
| GB2244107A (en) * | 1990-05-17 | 1991-11-20 | Teves Gmbh Alfred | Anti-lock controlled brake system |
| GB2244107B (en) * | 1990-05-17 | 1994-09-14 | Teves Gmbh Alfred | Anti-lock-controlled brake system,in particular for automotive vehicles |
| US5312175A (en) * | 1991-07-03 | 1994-05-17 | Tokico Ltd. | Brake fluid pressure control apparatus |
| US5303990A (en) * | 1991-07-03 | 1994-04-19 | Tokico Ltd. | Brake fluid pressure control apparatus |
| US5335982A (en) * | 1991-07-03 | 1994-08-09 | Tokico Ltd. | Brake fluid pressure control apparatus |
| EP0560197A1 (en) * | 1992-03-05 | 1993-09-15 | Tokico Ltd. | Brake fluid pressure control apparatus for antiskid brakes |
| US5700067A (en) * | 1995-09-12 | 1997-12-23 | Fahrzeugtechnik Ebern Gmbh | Hydraulic braking system, especially for motor vehicles |
| US5816668A (en) * | 1995-09-12 | 1998-10-06 | Fahrzeugtechnik Ebern Gmbh | Valve apparatus for a non-muscular-energy-assisted brake circuit in a hydraulic brake system |
| US5826953A (en) * | 1995-09-12 | 1998-10-27 | Fahrzeugtechnik Ebern Gmbh | Hydraulic braking system especially for motor vehicles |
| CN107531216A (en) * | 2015-03-16 | 2018-01-02 | 爱皮加特股份公司 | The brake apparatus of (MUX 2.0) is adjusted with the new type multipath of each brake apparatus one outlet valve or each brake circuit one outlet valve and for pressure controlled method |
| CN107531216B (en) * | 2015-03-16 | 2021-08-03 | 爱皮加特股份公司 | Brake device with multiplex regulation and method for pressure regulation |
| US11584348B2 (en) | 2015-03-16 | 2023-02-21 | Ipgate Ag | Pressure build-up controlled brake system with specific interconnection of inlet valves with brake circuit/wheel brakes and method for controlling pressure |
| US11760329B2 (en) | 2015-03-16 | 2023-09-19 | Ipgate Ag | Brake system with a new type of MUX control (MUX 2.0), having an outlet valve per brake system or an outlet valve per brake circuit, and method for controlling pressure |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63215454A (en) | 1988-09-07 |
| GB8803527D0 (en) | 1988-03-16 |
| FR2611177B1 (en) | 1994-05-06 |
| DE3705311A1 (en) | 1988-09-01 |
| FR2611177A1 (en) | 1988-08-26 |
| DE3705311C2 (en) | 1998-08-20 |
| GB2201208B (en) | 1991-04-03 |
| JP2834127B2 (en) | 1998-12-09 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PCNP | Patent ceased through non-payment of renewal fee |