WO2020058033A1 - Système de frein de stationnement électronique et procédé pour faire fonctionner un système de frein de stationnement électronique - Google Patents

Système de frein de stationnement électronique et procédé pour faire fonctionner un système de frein de stationnement électronique Download PDF

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Publication number
WO2020058033A1
WO2020058033A1 PCT/EP2019/074055 EP2019074055W WO2020058033A1 WO 2020058033 A1 WO2020058033 A1 WO 2020058033A1 EP 2019074055 W EP2019074055 W EP 2019074055W WO 2020058033 A1 WO2020058033 A1 WO 2020058033A1
Authority
WO
WIPO (PCT)
Prior art keywords
parking brake
trailer
towing vehicle
brake control
control valve
Prior art date
Application number
PCT/EP2019/074055
Other languages
German (de)
English (en)
Inventor
David NEMETH-NAGY
Andras FUCHS
Original Assignee
Knorr-Bremse Systeme für Nutzfahrzeuge GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Knorr-Bremse Systeme für Nutzfahrzeuge GmbH filed Critical Knorr-Bremse Systeme für Nutzfahrzeuge GmbH
Publication of WO2020058033A1 publication Critical patent/WO2020058033A1/fr

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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
    • B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
    • B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
    • B60T13/24—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release the fluid being gaseous
    • B60T13/26—Compressed-air systems
    • B60T13/261—Compressed-air systems systems with both indirect application and application by springs or weights and released by compressed air
    • B60T13/263—Compressed-air systems systems with both indirect application and application by springs or weights and released by compressed air specially adapted for coupling with dependent systems, e.g. tractor-trailer 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
    • B60T15/00—Construction arrangement, or operation of valves incorporated in power brake systems and not covered by groups B60T11/00 or B60T13/00
    • B60T15/02—Application and release valves
    • B60T15/04—Driver's valves
    • B60T15/041—Driver's valves controlling auxiliary pressure brakes, e.g. parking or emergency brakes

Definitions

  • the present invention relates to an electronic parking brake device for a vehicle, in particular a commercial vehicle, with at least one manually operable, electrical towing vehicle parking brake control element, with at least one manually operable, electrical trailer parking brake control element and with at least one electronic control unit.
  • the present invention relates to a method for operating such an electronic parking brake device for a vehicle, in particular a commercial vehicle.
  • the manual control of the parking brake device of the towing vehicle and trailer is carried out from the driver's cab. To do this, the corresponding manual
  • Parking brake control device on a separate control element for the towing vehicle and for the trailer vehicle or the trailer.
  • this configuration requires different framework conditions than, for example, in Europe, where the manual parking brake control device is generally designed as a single device with a correspondingly larger functional assignment.
  • manual electrical control or control elements has the particular advantage that they only communicate with a control unit, and thus the assignment of a manually set actuation signal with regard to activating or releasing the parking brake device is only carried out by the control unit.
  • This type of electrical connection can on the one hand remove the “rigid” assignment of a specific switching state of the manual switching elements to a specific operating state of the parking brake device.
  • this type of decoupling allows a specific switching state of the manual control elements to now have different operating states Parking brake device can be assigned, depending on the operating state in which the parking brake device is at the time before the manual actuation. This is particularly the complexity of the manual
  • Circuit elements can be reduced and the operation or actuation of these elements can be more easily and intuitively demonstrated for a vehicle driver.
  • Parking brake devices with two electrical or electronic and manually operated parking brake control devices are known.
  • WO 2017/076892 A1 discloses a pneumatic brake device for a commercial vehicle with at least one pneumatically controllable spring accumulator for a parking brake of the commercial vehicle and with an electronic parking brake device, with at least one control electronics, at least one bistable valve unit, at least one first valve unit, by means of which when activated Parking brake of the commercial vehicle, a parking brake of a trailer of the commercial vehicle can be deactivated, at least one second valve device which can be connected in such a way that when the system pressure drops to supply the parking brake of the trailer, the parking brake of the trailer can be activated, and with a towing vehicle protection valve.
  • WO 2017/076893 A1 discloses a pneumatic brake device for a commercial vehicle with at least one pneumatically controllable spring accumulator for a parking brake of the commercial vehicle with an electronic parking brake device, with at least one control electronics, at least one first bistable valve unit and at least one second bistable valve unit, at least one valve device , which can be connected in such a way that when the system pressure for supplying a parking brake to a trailer of the towing vehicle drops, the parking brake of the trailer can be activated, and with a towing vehicle protection valve.
  • US 7,204,563 B2 shows a brake system for a towing vehicle consisting of a service brake system and a parking brake system.
  • the service and parking brake system is used to brake a tractor and a trailer that is being pulled by the tractor.
  • a trailer hand control valve is made by operated by a driver to brake the trailer.
  • Parking brake system has a parking brake control valve that from
  • the driver receives commands to apply and release the parking brakes on the tractor and trailer.
  • DE 10 2005 043 607 A1 also discloses a method for controlling an electric parking brake of a commercial vehicle with an electronic one
  • the parking brake is closed on the basis of an action carried out by the driver of the commercial vehicle which is not connected to the actuation of the manual control unit.
  • DE 10 2006 036 748 A1 describes an electrically controlled brake system for a towing vehicle which can be connected to a trailer and which can be actuated by means of a manual control element and which acts only on the brakes of the trailer
  • the control element is designed as an electrical element, by means of which an electrical signal for controlling a valve device can be generated, by means of which the braking force of the stretching brake can be influenced.
  • an electronic parking brake device for a vehicle in particular a commercial vehicle, with at least one manually operated, electrical towing vehicle parking brake control element, with at least one manually operated, electrical trailer parking brake control element, with at least one electronic control unit, with at least one pneumatic towing vehicle parking brake control valve, with at least a pneumatic trailer parking brake control valve, is provided with at least one towing vehicle parking brake supply line and with at least one trailer parking brake supply line, the control unit having at least one timer element with at least one, in particular adjustable, control period, the towing vehicle parking brake control valve being provided by means of the
  • Control unit can be controlled such that the towing vehicle parking brake supply line can be vented through the at least one towing vehicle parking brake control valve and at the same time a start of the activation time period of the time switching element can be activated, the trailer parking brake control valve being activated within the activation time period by means of the control unit in response to a manual one Actuation of the trailer parking brake control element can be controlled such that the trailer parking brake supply line can be further ventilated by the at least one trailer parking brake control valve.
  • the invention is based on the basic idea that the electrical connection of the two manual parking brake control elements to the control unit can remove the rigid association of a specific switching state of the control elements with only one specific operating state of the parking brake device.
  • a specific switching state of the manual control elements can now be assigned to different operating states of the parking brake device.
  • the assignment is in particular dependent on the operating state in which the parking brake device is at the time before the manual control or
  • Switching states of the parking brake control elements can in particular also be used to ensure a so-called trailer overwrite or trailer cancellation function.
  • This function provides for the trailer parking brake control valve or the trailer parking brake solenoid control valve to be responded to by the control unit within the defined activation period manual actuation of the trailer parking brake control element can be controlled such that the trailer parking brake supply line remains or can be ventilated.
  • the trailer parking brake supply line continues to be ventilated, although manual actuation should actually lead to its ventilation due to the ventilation state of the trailer parking brake supply line.
  • simple activation and activation of only the towing vehicle parking brake can be achieved, the trailer parking brake being ventilated, i.e. solved, state remains.
  • the towing vehicle parking brake control element and trailer parking brake control element can be constructed very simply since they are in the
  • Parking brake controls are more intuitive and easier for a driver.
  • the towing vehicle parking brake control valve can, moreover, advantageously be designed as a towing vehicle parking brake magnet control valve. Furthermore, the towing vehicle parking brake control valve can be designed as a bistable towing vehicle parking brake control valve. Consequently, it is also conceivable that the trailer parking brake control valve is advantageously designed as a trailer parking brake solenoid control valve. Thus, the trailer parking brake control valve can also be designed as a bistable trailer parking brake control valve.
  • the towing vehicle parking brake control valve can preferably also be part of a towing vehicle parking brake control valve arrangement consisting of several such parking brake control valves.
  • the ventilation or venting of the towing vehicle parking brake supply line can then be performed by the towing vehicle parking brake control valve arrangement in combination with one or more
  • the trailer parking brake control valve can preferably also be part of a trailer parking brake control valve arrangement consisting of several such parking brake control valves.
  • the ventilation or venting of the trailer parking brake supply line can then be carried out by the trailer Parking brake control valve arrangement in combination with one or more relay valves.
  • a relay valve can be arranged in the trailer parking brake supply line and / or in the towing vehicle parking brake supply line.
  • An air quantity-increasing valve can thus be provided in the trailer parking brake supply line and / or in the towing vehicle parking brake supply line.
  • Trailer parking brake control element each at least one current-carrying
  • Actuate state and at least one current-blocking neutral state are to be understood in such a way that a circuit is closed as a result of manual actuation by a vehicle driver and a corresponding actuation or control signal is transmitted to the control unit. Accordingly, the current blocking state or
  • Neutral state is a non-manually operated state of the control elements, so that the control elements do not transmit a control signal to the control unit.
  • the two control elements are designed as normal current blocking control elements. This means that they are not electrically conductive in a non-manually operated state and therefore cannot transmit an actuation signal or control signal to the control unit.
  • Controls is an error-reducing operation of the electronic
  • the manual control or actuation of the parking brake control elements takes place in the context of this invention by actuation by the vehicle driver by hand. It is also important to mention in this context that when the above-mentioned parking brake supply lines are vented, the spring-loaded brake cylinders of a towing vehicle parking brake device and a trailer parking brake device are activated or applied. Accordingly takes place in one
  • the state of ventilation of the above-mentioned parking brake supply lines is a loosening or deactivation of the spring brake cylinders of a towing vehicle parking brake device and a trailer parking brake device.
  • the corresponding parking brake supply lines for towing vehicle and trailer are through the parking brake control valves or
  • Parking brake solenoid valves can be vented or ventilated directly. Alternatively, it can also be provided that the corresponding parking brake supply lines for the towing vehicle and trailer through the parking brake control valves or
  • Parking brake magnet control valves can be vented indirectly or indirectly. Accordingly, the parking brake control valves can control a relay valve, which then ventilates or ventilates the parking brake supply lines.
  • the trailer parking brake control valve can be controlled automatically by means of the control unit such that the trailer parking brake supply line can be vented through the trailer parking brake control valve. This state is therefore present when the trailer parking brake control element is not activated by the
  • the control unit could not determine an actuation or control signal in the period of time, whereupon it automatically implemented the ventilation of the trailer parking brake supply line via the trailer parking brake control valve.
  • the actuation of the towing vehicle parking brake and the trailer parking brake can thus be brought about very simply for the vehicle driver by merely using a single parking brake control element in the form of the
  • the towing vehicle parking brake control valve can be controlled by the control unit in response to a manual actuation of the towing vehicle parking brake control element by bringing about the actuation state.
  • the towing vehicle parking brake control valve can be controlled by the control unit such that the towing vehicle parking brake supply line can be vented as a result of this activation.
  • the first option consists in the control of the towing vehicle parking brake control valve by means of the control unit in response to the manual actuation of the towing vehicle parking brake control element by bringing about the actuation state.
  • the second option is to control the towing vehicle parking brake control valve automatically by means of the control unit, for example in response to an operating state of the commercial vehicle (see paragraph below).
  • Comprehensibility of his actions for the vehicle driver can be improved, since he himself can actuate or activate the parking brake of the towing vehicle.
  • control unit is connected to at least one vehicle status detection unit for generating at least one vehicle status signal, the towing vehicle parking brake control valve being automated by the control unit in response to the vehicle status signal
  • the vehicle state detection unit can in particular detect the standstill of the vehicle or a quasi standstill of the commercial vehicle and then generate a corresponding vehicle state signal and send it to the
  • the control of the towing vehicle parking brake control valve by means of the control unit can only take place in such a way that the towing vehicle parking brake supply line can be vented as a result of this activation. Consequently, ventilation and the consequent automatic release of the electronic parking brake device is not permitted for safety reasons.
  • towing vehicle parking brake supply line and the trailer parking brake supply line are located before the manual actuation of the towing vehicle parking brake supply line
  • Towing vehicle parking brake control element by bringing about the actuation state or are in their ventilation state before the automatic control by means of the control unit 16. This state of the two
  • Parking brake supply lines are the basis for the fact that the trailer overwrite or trailer cancellation function described above can only be implemented functionally. Therefore, this operating state offers an important and advantageous basis for realizing this overwrite function in the first place.
  • the towing vehicle parking brake control element and the trailer parking brake control element by means of at least one, in particular
  • bus data connection is connected to the control unit.
  • the bus data connection can in particular be designed as a CAN data bus connection or a LIN data bus connection. Other data bus connections are also conceivable in this context.
  • the connection by means of a bus system represents a safe, standardized and inexpensive form of transmission of the
  • Actuation signals from the control elements for the towing vehicle and trailer brakes to the electronic control unit also allows, in particular, the transmission of the operating states of the respective parking brake supply lines to the control elements, so that an even easier assignment of the actuation state to the respective operating state of the
  • Actuation of the electronic parking brake device take place. It is also conceivable that the towing vehicle parking brake control element and the trailer parking brake control element are connected to the control unit by means of at least one monodirectional bus data connection.
  • the towing vehicle parking brake control element and the trailer parking brake control element are each designed as a monostable control element.
  • the configuration as a monostable control element offers the particular advantage that the current-conducting actuation state can be uniquely assigned to either the stable switching position or the monostable switching position of these switching elements. This enables a clearer and safer actuation of the manual control elements, since only one defined switching position of an actual actuation in the form is assigned to the current-conducting actuation state and an actual control signal for the parking brake device.
  • the two manual control elements are preferably designed as monostable push buttons or push buttons.
  • control elements can also be designed as a pivotable lever, a rotary switch, a rocker switch, a linearly movable slide or a linearly movable push button, a linearly movable pull button or a linearly movable push-pull button.
  • the towing vehicle parking brake control element and the trailer parking brake control element are designed as a common structural unit and the structural unit has at least one electronic sub-control unit.
  • the formation of a common structural unit saves space in particular within the driver's cab or within the dashboard of the commercial vehicle.
  • electrical supply and data bus lines can be functionally combined, which on the one hand reduces the amount of circuitry required and on the other hand generally reduces the number of cables and electrical connections.
  • the manufacture of the electric towing vehicle parking brake control element and the electric trailer parking brake control element is simplified.
  • the sub-control unit further enables the implementation of a data bus system in a particularly simple manner and thus communication with the actual electronic control unit. Incidentally, a redundant
  • Verification point are provided which, in addition to the electronic control unit of the electronic parking brake device, the status of
  • Controls can match. As a result, redundant functional safety can take place, as a result of which the overall safety of the electronic parking brake device and of the commercial vehicle is further increased.
  • Trailer parking brake control valve are designed as an electrically controllable 3/2-way valve.
  • a 3/2-way valve is the functionally and structurally simplest way of venting and venting a compressed air line by activating it.
  • the electronic parking brake device can be special structurally and functionally very simple.
  • the two 3/2-way valves or 3/2-way solenoid valves can have a locking device within their control connection to maintain a switching position.
  • the control magnet can be relieved of load, thereby extending the life of the solenoid valves.
  • the towing vehicle parking brake control valve and the trailer parking brake control valve are designed as a common valve assembly.
  • the towing vehicle parking brake control valve can be designed as a bistable, electrically controllable 3/2-way valve. It is also conceivable that the towing vehicle parking brake control valve can be designed as a bistable, electrically controllable 2/2-way valve. Such an embodiment is particularly advantageous if the towing vehicle parking brake control valve is part of the towing vehicle parking brake control valve arrangement.
  • the trailer parking brake control valve can be designed as a bistable, electrically controllable 3/2-way valve.
  • the trailer parking brake control valve can be designed as a bistable, electrically controllable 2/2-way valve. Such an embodiment is particularly advantageous when the trailer parking brake control valve is part of the trailer parking brake control valve arrangement.
  • the present invention relates to a method for operating the above-described electronic parking brake device for a vehicle, in particular a commercial vehicle, wherein the parking brake device has at least one manually operated, electrical towing vehicle parking brake control element and at least one manually operated, electrical trailer parking brake control element, comprising the following Steps:
  • At least one control unit such that at least one towing vehicle parking brake supply line is vented through the at least one towing vehicle parking brake control valve and at the same time by means of the control unit at least one start of a control period of at least one
  • Timer element is activated; and - Controlling at least one trailer parking brake control valve within the activation period by means of the control unit in response to a manual actuation of the trailer parking brake control element such that the trailer parking brake supply line is further ventilated by the at least one trailer parking brake control valve.
  • Electronic parking brake device can be provided and all in
  • the trailer parking brake control valve is automatically controlled by the control unit such that the trailer parking brake supply line is vented by the trailer parking brake control valve becomes.
  • Control unit is controlled in response to a manual actuation of the towing vehicle parking brake control element.
  • control unit is connected to at least one vehicle status detection unit for generating at least one vehicle status signal, the towing vehicle parking brake control valve being controlled automatically by the control unit in response to the vehicle status signal.
  • Fig. 1 is a schematic representation of a pneumatic circuit of an embodiment of an electronic according to the invention
  • Fig. 2 is a schematic flow diagram of an embodiment of a
  • FIG. 1 shows a schematic illustration of a pneumatic circuit of an exemplary embodiment of an electronic parking brake device 10 according to the invention.
  • the electronic parking brake device 10 for a commercial vehicle has a manually operable, electrical towing vehicle parking brake control element 12.
  • the electronic parking brake device 10 comprises a manually operable, electrical trailer parking brake control element 14.
  • the towing vehicle parking brake control element 12 and the trailer parking brake control element 14 are each further designed as a monostable control element.
  • the towing vehicle parking brake control element 12 is in particular designed as a partially yellow colored parking brake control element.
  • the trailer parking brake control element 14 is designed in particular as a partially red colored parking brake control element.
  • the two control elements 12, 14 are preferably designed as monostable pushbuttons or pushbuttons.
  • these control elements 12, 14 can each be designed or in combination as a pivotable lever, a rotary switch, a rocker switch, a linearly movable slide or a linearly movable push button, a linearly movable pull button or a linearly movable push-button.
  • the towing vehicle parking brake control element 12 and the trailer parking brake control element 14 are designed as a common structural unit.
  • This assembly is arranged on a dashboard of the commercial vehicle.
  • the assembly also has an electronic sub-control unit.
  • the towing vehicle parking brake control element 12 and the trailer parking brake control element 14 each have a current-conducting actuation state and a current-blocking neutral state.
  • the electronic parking brake device 10 has an electronic one
  • the control unit 16 can also be designed as a control and regulation unit.
  • the control unit 16 can also be designed only as a control unit.
  • the control unit 16 also has a time switching element 16a with an adjustable activation time period.
  • the towing vehicle parking brake control element 12 and the trailer parking brake control element 14 are connected to the control unit 16 by means of a bidirectional bus data connection via the sub-control unit.
  • the control unit 16 is further connected to a vehicle status detection unit 16b for generating a vehicle status signal.
  • the bus data connection is designed as a CAN bus data connection.
  • bus data connection is designed as a LIN bus data connection.
  • the electronic parking brake device 10 further includes a pneumatic one
  • Towing vehicle parking brake solenoid control valve 18 and a pneumatic trailer parking brake solenoid control valve 20 are towing vehicle parking brake solenoid control valve 18 and a pneumatic trailer parking brake solenoid control valve 20.
  • the towing vehicle parking brake control solenoid valve 18 is electrical
  • trailer parking brake solenoid control valve 20 is also designed as an electrically controlled 3/2-way solenoid valve.
  • the two 3/2-way solenoid valves 18, 20 each have a locking device within their solenoid control connection to maintain a switching position.
  • the towing vehicle parking brake control solenoid valve 18 and the trailer parking brake solenoid control valve 20 can be designed as a common valve assembly.
  • the electronic parking brake device 10 has a towing vehicle parking brake supply line 22 and a trailer parking brake supply line 24.
  • the electronic parking brake device 10 comprises a
  • Air treatment device 26 The Air treatment device 26.
  • the electronic parking brake device 10 and the air conditioning device 26 are designed as separate units and are connected to one another via corresponding compressed air connections.
  • the compressed air treatment device 26 is connected to a compressed air compressor 26a via a main supply line 28.
  • a regeneration valve 30 and an air dryer cartridge 32 with a combined air filter and a check valve 34 are also arranged in the main supply line 28.
  • the main supply line 28 is connected to a multi-circuit protection valve 36, shown here by way of example as a two-circuit protection valve.
  • a compressor feedback line 38 branches off between check valve 34 and multi-circuit protection valve 36 and is connected to a compressor control input 26b.
  • a compressor magnetic control valve 40 is further arranged in the compressor feedback line 38 and is electrically connected to the control unit 16.
  • the multi-circuit protection valve 36 is connected to two compressed air containers 44a, 44b via two compressed air lines 42a, 42b.
  • the two compressed air lines 42a, 42b unite via a first select high valve 46 to form the trailer parking brake supply line 24.
  • the trailer parking brake solenoid control valve 20 is further arranged in the trailer parking brake supply line 24.
  • the trailer parking brake supply line 24 extends between the first select high valve 46 and a first coupling head, which pneumatically connects the towing vehicle to the trailer vehicle.
  • the towing vehicle parking brake supply line 22 branches off between the first select high valve 46 and the trailer parking brake magnet control valve 20 and extends to a towing vehicle spring brake cylinder 48.
  • the traction vehicle spring brake cylinder 48 is shown in FIG. 1 as a single traction vehicle spring brake cylinder 48, the electronic parking brake device 10 naturally having a plurality (e.g. two, four or six, etc.) of the traction vehicle spring brake cylinder 48.
  • a relay valve 50 with a control input 50a is also arranged in the towing vehicle parking brake supply line 22.
  • the relay valve 50 also has a pneumatic control input 50a, which can be controlled pneumatically via a control line 22a.
  • the control line is on the towing vehicle parking brake supply line 22
  • the towing vehicle parking brake magnet control valve 18 can be arranged in the towing vehicle parking brake supply line 22.
  • a first pressure sensor 24a is also arranged within the trailer parking brake supply line 24 between the trailer parking brake magnet control valve 20 and the first coupling head.
  • a second pressure sensor (not shown in FIG. 1) can be arranged within the towing vehicle parking brake supply line 22 between the relay valve 50 and the spring brake cylinder 48. Additionally or alternatively, it is conceivable that another such relay valve with a corresponding control line (not shown in each case in FIG. 1) is arranged in that in the trailer parking brake supply line 24.
  • FIG. 1 In addition to the electronic parking brake device 10, another is shown in FIG. 1
  • Service brake device 52 is provided, which is connected to the two compressed air tanks 44a, 44b.
  • the service brake supply lines 54a, 54b branching off from the two compressed air lines 42a, 42b are connected to a trailer service brake supply line 60 via a second and a third select high valve 56, 58.
  • the trailer service brake supply line 60 extends between the third select high valve 58 and a second coupling head, which also pneumatically connects the towing vehicle to the trailer vehicle.
  • shut-off valve 62 which is designed as a 2/2-way valve with a passage and blocking position.
  • the shutoff valve 62 also includes a pneumatic control input 62a, which is connected to the trailer parking brake supply line 24.
  • the two select high valves 56, 58 and the shutoff valve 62 together form a towing vehicle protection valve assembly 64.
  • a bypass line 42c branches off from the compressed air line 42b between the second compressed air tank 44b and the first select high valve 46 and extends to the third select high valve 58, where it is connected to the latter.
  • Arranged in the bypass line 42c are further first and second stretching brake magnetic control valves 42d, 42e, which are connected to the control unit 16 via a respective electrical connection.
  • a stretching brake control element 14a which also has a displacement sensor for generating a deflection of the stretching brake control element 14a
  • the stretching brake control element 14a can in particular be designed as a pivotable lever.
  • the stretching brake control element 14a can also be used as a meterable rotary switch, rocker switch, linearly movable slide or linearly movable
  • Push button linearly movable pull button or linearly movable push-button can be formed.
  • the basic idea according to the invention is set up such that the towing vehicle parking brake magnet control valve 18 can be controlled by the control unit 16 in such a way that the towing vehicle parking brake supply line 22 can be vented through the towing vehicle parking brake magnet control valve 18 and at the same time a start of the duration of the time switching element 16a can be activated.
  • the actuation of the towing vehicle parking brake magnet control valve 18 can be carried out in the context of the present invention either as a result of manual actuation of the
  • Towing vehicle parking brake control element 12 or automatically.
  • the control of the towing vehicle parking brake magnet control valve 18 by means of the control unit 16 consequently takes place in response to a manual actuation of the Towing vehicle parking brake control element 12 by bringing about the
  • the automated control can only take place when the vehicle status signal has been transmitted to the control unit 16 from the vehicle status detection unit 16b.
  • the trailer parking brake magnet control valve 20 can be controlled by the control unit 16 in response to a manual actuation of the trailer parking brake control element 14 by bringing about the actuation state in such a way that the trailer parking brake supply line 24 can be further ventilated by the trailer parking brake magnet control valve 18.
  • the resulting operating state for the commercial vehicle is that the towing vehicle parking brake system is applied or activated, while the trailer parking brake system remains released or remains in the relaxed state.
  • This operating state can also be used to carry out a so-called trailer test when the trailer parking brake control element 14 is actuated within the time period described above.
  • the trailer parking brake system thus remains in a released state even after the end of the period of time, which can be achieved by manually releasing the
  • Activation state can be ended by means of the trailer parking brake control element 14 and the trailer parking brake system can be activated accordingly.
  • the towing vehicle parking brake supply line 22 and the trailer parking brake supply line 24 are located before the manual actuation of the towing vehicle Parking brake control element 12 or before the automatic control by means of the control unit 16 in each case in its ventilation state.
  • This state of the two parking brake supply lines 22, 24 only enables the above-described trailer overwrite or trailer cancellation function to be implemented functionally.
  • the venting of the towing vehicle parking brake supply line 22 requires actuation or tightening of the towing vehicle spring brake cylinder 48, whereas correspondingly ventilation of the towing vehicle parking brake supply line 22 causes the towing vehicle spring brake cylinder 48 to be released or relaxed.
  • venting of the trailer parking brake supply line 24 requires actuation or tightening of the trailer spring brake cylinder (not shown in FIG. 1), whereas accordingly ventilation of the trailer parking brake supply line 24 causes the trailer spring brake cylinder to be released or relaxed.
  • the activation takes place according to the invention by manual actuation of the two parking brake control elements in the form of the towing vehicle parking brake control element 12 and the trailer parking brake control element 14 by bringing about the
  • Towing vehicle parking brake control element 12 and trailer parking brake control element 14 each have a current-conducting actuation state and a current-blocking neutral state.
  • the current-conducting actuation state or activation state should be understood in such a way that a corresponding parking brake control signal is generated and transmitted to the electronic control unit 16.
  • the manual actuation of the two control elements 12, 14 should be understood in such a way that the current-conducting actuation state can be brought about thereby.
  • control unit can then control the two parking brake solenoid control valves 18, 20.
  • the current-blocking neutral state can accordingly be understood such that no parking brake control signal is generated in this neutral state and, accordingly, the two parking brake magnet control valves 18, 20 are not activated or cannot be activated.
  • control elements 12, 14 are actuated in the pulling and / or pushing direction (push-pull) in order to bring about the actuation state.
  • control elements 12, 14 would each be one
  • the two operating positions can each be brought about in the opposite direction by pressing and pulling on the two control elements 12, 14, the neutral position being arranged between the two operating positions.
  • the two control elements 12, 14 would also be monostable in this example with the neutral position as a stable position.
  • control elements 12, 14 are also designed as bistable control elements 12, 14 (also not shown in FIG. 1).
  • the trailer parking brake supply line 24 can be vented by the trailer parking brake magnet control valve 18 if the trailer parking brake control element 14 is in its current-blocking neutral state within the actuation period.
  • the trailer parking brake solenoid control valve 20 is thus automatically controlled by means of the control unit 16 in such a way that the trailer parking brake supply line 24 can be vented.
  • the trailer parking brake system is therefore brought into its locked or activated state as a result of the ventilation and can apply a braking effect for the trailer.
  • the commercial vehicle can also have an optical display device on its dashboard in the vicinity of the two parking brake control elements 12, 14 which indicates to the driver the current operating state of the towing vehicle parking brake device trailer parking brake device.
  • the optical display device can be provided in the form of several illuminated symbols, LEDs or in the form of an electronic display. Other switching scenarios are also possible:
  • the towing vehicle parking brake solenoid control valve 18 is controlled by means of the control unit 16.
  • the ventilation state and the ventilation state of the towing vehicle parking brake supply line 22 and the trailer parking brake supply line 24 can be detected by the two parking brake pressure sensors and transmitted to the control unit 16 on the basis of a corresponding pressure signal in the towing vehicle parking brake supply line 22 and in the trailer parking brake supply line 24.
  • the state of ventilation and the state of ventilation of the trailer parking brake supply line 24 is also detected and by means of a
  • the control takes place in such a way that in response to the control signal from the towing vehicle parking brake control element 12, the control unit 16 controls the towing vehicle parking brake magnet control valve 18 such that the towing vehicle parking brake supply line 22 is ventilated by the towing vehicle parking brake magnet control valve 18.
  • the ventilation takes place in a passage position of the towing vehicle parking brake magnet control valve 18.
  • Control input 50a is pneumatically controlled by the electrically controllable towing vehicle parking brake magnet control valve 18.
  • a venting state of the trailer parking brake supply line 24 and, in the actuation state of the trailer parking brake control element 14, the trailer parking brake magnet control valve is controlled by means of the control unit 16.
  • the control takes place in such a way that the trailer parking brake supply line 24 is aerated by the trailer parking brake magnet control valve by means of the control unit 16.
  • control in accordance with the second further switching scenario takes place in principle as in the first further switching scenario.
  • Parking brake magnet control valve 20 and the towing vehicle parking brake magnet control valve 18 are controlled by means of the control unit 16.
  • control is also carried out here in such a way that the control unit 16 controls the
  • Trailer parking brake supply line 24 is vented by the trailer parking brake magnet control valve 20 and the towing vehicle parking brake supply line 22 is vented by the towing vehicle parking brake magnet control valve 18.
  • the ventilation takes place in a respective ventilation position of the towing vehicle parking brake solenoid control valve 18 and the relay valve 50 as well as the trailer parking brake solenoid control valve 20.
  • the parking brake supply line 24 and the towing vehicle parking brake supply line 22 are vented via the respective ventilation outputs of the relay valve 50 and the trailer parking brake magnet control valve 20.
  • the control according to the third further switching scenario is basically the same as in the first further and second further switching scenario.
  • the ventilation state is the
  • Trailer parking brake supply line 24 and, in the actuated state of the trailer parking brake control element 14, the trailer parking brake magnet control valve 20 is controlled by the control unit 16 such that the trailer parking brake supply line 24 is vented by the trailer parking brake magnet control valve 20.
  • the activation according to the fourth switching scenario takes place in principle as in the first further, second further and third further switching scenario.
  • the commercial vehicle can be operated temporarily in a stretch braking condition.
  • the stretching brake control element 14a is manually operated by one
  • This signal can then be further processed by the control unit 16 and actuation of the two stretching brake valves 42d, 42e to generate the
  • Stretch brake function can be controlled.
  • the manual control or actuation of the stretching brake control element 14a takes place in the context of this invention by actuation by the vehicle driver by hand.
  • the commercial vehicle can be operated temporarily in a stretch braking condition.
  • the stretching brake control element 14a is manually operated by one
  • This signal can then be further processed by the control unit 16 and actuation of the two stretching brake valves 42d, 42e to generate the
  • Stretch brake function can be controlled.
  • the manual control or actuation of the stretching brake control element 14a takes place in the context of this invention by actuation by the vehicle driver by hand.
  • FIG. 2 shows a schematic flow diagram of an exemplary embodiment of a method according to the invention for operating the electronic parking brake device 10 according to FIG. 1.
  • Trailer parking brake control element 14 for a commercial vehicle comprises the following steps:
  • Control unit 16 according to a first step S1 such that a towing vehicle parking brake supply line 22 is vented by a towing vehicle parking brake magnet control valve 18 and at the same time by means of the
  • Control unit 16 a start of a control period of a time switching element 16a is activated
  • the trailer parking brake solenoid control valve 20 is automatically controlled by the control unit 16 such that the trailer parking brake supply line 24 is vented through the trailer parking brake solenoid control valve 18.
  • step S4 the towing vehicle parking brake magnet control valve 18 is activated by the control unit 16 in response to a manual actuation of the
  • Traction vehicle parking brake control element 12 controlled.
  • control unit 16 can be connected to a vehicle status detection unit 16b by means of a fifth step S5 in order to generate a vehicle status signal and the towing vehicle parking brake solenoid control valve 18 can be controlled automatically in response to the vehicle status signal.
  • steps S1, S2, S3, S4 and S5 described above can be carried out individually or in combination in succession or in parallel.
  • the electronic parking brake device 10 according to the invention described above in connection with FIG. 1 is in particular also set up to carry out the method according to the invention described above.

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  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Regulating Braking Force (AREA)
  • Braking Systems And Boosters (AREA)

Abstract

La présente invention concerne un système de frein de stationnement (10) électronique pour un véhicule, en particulier un véhicule utilitaire, comportant un élément de commande de frein de stationnement électrique de véhicule tracteur (12) actionnable manuellement et un élément de commande de frein de stationnement électrique de remorque (14) actionnable manuellement, une soupape de commande de frein de stationnement de véhicule tracteur (18) pouvant être actionnée au moyen d'une unité de commande (16), de sorte qu'une conduite d'alimentation de frein de stationnement de véhicule tracteur (22) peut être purgée par la soupape de commande de frein de stationnement de véhicule tracteur (18) et simultanément qu'un début d'une période d'un élément temporisateur (16a) peut être activé. À l'intérieur de la période d'activation, une soupape de commande de frein de stationnement de remorque (20) peut être commandée au moyen de l'unité de commande (16), en réponse à un actionnement manuel de l'élément de commande de frein de stationnement de remorque (14), de sorte qu'une conduite d'alimentation de frein de stationnement de remorque (24) peut continuer d'être ventilée par la soupape de commande de frein de stationnement de remorque (18). En outre, l'invention concerne un procédé permettant de faire fonctionner le système de frein de stationnement (10) électronique pour un véhicule, en particulier un véhicule utilitaire.
PCT/EP2019/074055 2018-09-19 2019-09-10 Système de frein de stationnement électronique et procédé pour faire fonctionner un système de frein de stationnement électronique WO2020058033A1 (fr)

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DE102018122955.0A DE102018122955A1 (de) 2018-09-19 2018-09-19 Elektronische Parkbremseinrichtung und Verfahren zum Betrieb einer elektronischen Parkbremseinrichtung
DE102018122955.0 2018-09-19

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005043607A1 (de) 2005-09-06 2007-03-15 Knorr-Bremse Systeme für Nutzfahrzeuge GmbH Verfahren zum Steuern einer elektrischen Feststellbremse eines Nutzfahrzeugs
US7204563B2 (en) 2004-10-12 2007-04-17 Meritor Wabco Vehicle Control Systems Park brake interlock and trailer brake valve assembly
DE102006036748A1 (de) 2006-08-05 2008-02-07 Wabco Gmbh Elektrisch gesteuerte Bremsanlage
DE102007033694B3 (de) * 2007-07-19 2008-12-04 Knorr-Bremse Systeme für Nutzfahrzeuge GmbH Parkbremse für ein Anhängerfahrzeug
DE102008064077A1 (de) * 2008-12-19 2010-07-01 Wabco Gmbh Betätigungseinrichtung sowie Verfahren zum Betätigen einer derartigen Betätigungseinrichtung
WO2017076893A1 (fr) 2015-11-06 2017-05-11 Knorr-Bremse Systeme für Nutzfahrzeuge GmbH Dispositif de freinage pneumatique pour véhicule utilitaire
WO2017076892A1 (fr) 2015-11-06 2017-05-11 Knorr-Bremse Systeme für Nutzfahrzeuge GmbH Système de freinage pneumatique

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006054433B4 (de) * 2006-11-16 2024-03-14 Knorr-Bremse Systeme für Nutzfahrzeuge GmbH Streckbremseinrichtung für Kraftfahrzeuge
DE102007047691A1 (de) * 2007-10-05 2009-04-09 Wabco Gmbh Elektropneumatischer Feststellbremsmodulator zur Steuerung einer Feststellbremsfunktion von Bremsen eines Anhängefahrzeugs in einem Fahrzeugzug

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7204563B2 (en) 2004-10-12 2007-04-17 Meritor Wabco Vehicle Control Systems Park brake interlock and trailer brake valve assembly
DE102005043607A1 (de) 2005-09-06 2007-03-15 Knorr-Bremse Systeme für Nutzfahrzeuge GmbH Verfahren zum Steuern einer elektrischen Feststellbremse eines Nutzfahrzeugs
DE102006036748A1 (de) 2006-08-05 2008-02-07 Wabco Gmbh Elektrisch gesteuerte Bremsanlage
DE102007033694B3 (de) * 2007-07-19 2008-12-04 Knorr-Bremse Systeme für Nutzfahrzeuge GmbH Parkbremse für ein Anhängerfahrzeug
DE102008064077A1 (de) * 2008-12-19 2010-07-01 Wabco Gmbh Betätigungseinrichtung sowie Verfahren zum Betätigen einer derartigen Betätigungseinrichtung
WO2017076893A1 (fr) 2015-11-06 2017-05-11 Knorr-Bremse Systeme für Nutzfahrzeuge GmbH Dispositif de freinage pneumatique pour véhicule utilitaire
WO2017076892A1 (fr) 2015-11-06 2017-05-11 Knorr-Bremse Systeme für Nutzfahrzeuge GmbH Système de freinage pneumatique

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