GB2612644A - A method for engaging a pneumatic parking brake of a parking brake system of a motor vehicle - Google Patents

A method for engaging a pneumatic parking brake of a parking brake system of a motor vehicle Download PDF

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Publication number
GB2612644A
GB2612644A GB2116052.8A GB202116052A GB2612644A GB 2612644 A GB2612644 A GB 2612644A GB 202116052 A GB202116052 A GB 202116052A GB 2612644 A GB2612644 A GB 2612644A
Authority
GB
United Kingdom
Prior art keywords
parking brake
controller
pneumatic
mode
motor vehicle
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.)
Withdrawn
Application number
GB2116052.8A
Inventor
Richards Graig
Marchuk Andrey
Frees Emerson
Kostek Theodore
Ercan Ilhan
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Daimler Truck Holding AG
Original Assignee
Daimler Truck AG
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 Daimler Truck AG filed Critical Daimler Truck AG
Priority to GB2116052.8A priority Critical patent/GB2612644A/en
Publication of GB2612644A publication Critical patent/GB2612644A/en
Withdrawn legal-status Critical Current

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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
    • B60T13/66—Electrical control in fluid-pressure brake systems
    • B60T13/662—Electrical control in fluid-pressure brake systems characterised by specified functions of the control system components
    • 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
    • B60T13/38—Brakes applied by springs or weights and released by compressed air
    • B60T13/385—Control arrangements therefor
    • 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
    • B60T13/66—Electrical control in fluid-pressure brake systems
    • B60T13/68—Electrical control in fluid-pressure brake systems by electrically-controlled valves
    • B60T13/683—Electrical control in fluid-pressure brake systems by electrically-controlled valves in pneumatic systems or parts thereof
    • 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
    • B60T17/00—Component parts, details, or accessories of power brake systems not covered by groups B60T8/00, B60T13/00 or B60T15/00, or presenting other characteristic features
    • B60T17/18—Safety devices; Monitoring
    • B60T17/22—Devices for monitoring or checking brake systems; Signal devices
    • 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
    • B60T17/00—Component parts, details, or accessories of power brake systems not covered by groups B60T8/00, B60T13/00 or B60T15/00, or presenting other characteristic features
    • B60T17/18—Safety devices; Monitoring
    • B60T17/22—Devices for monitoring or checking brake systems; Signal devices
    • B60T17/221—Procedure or apparatus for checking or keeping in a correct functioning condition of brake 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
    • B60T7/00—Brake-action initiating means
    • B60T7/12—Brake-action initiating means for automatic initiation; for initiation not subject to will of driver or passenger
    • 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
    • B60T2270/00—Further aspects of brake control systems not otherwise provided for
    • B60T2270/40—Failsafe aspects of brake control 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
    • B60T2270/00—Further aspects of brake control systems not otherwise provided for
    • B60T2270/40—Failsafe aspects of brake control systems
    • B60T2270/402—Back-up
    • 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
    • B60T2270/00—Further aspects of brake control systems not otherwise provided for
    • B60T2270/40—Failsafe aspects of brake control systems
    • B60T2270/406—Test-mode; Self-diagnosis

Landscapes

  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Valves And Accessory Devices For Braking Systems (AREA)
  • Braking Systems And Boosters (AREA)

Abstract

A method for engaging a pneumatic parking brake 30 of a parking brake system 12 of a motor vehicle 10, wherein a first controller 14 of the parking brake system 12 receives a parking brake command 18 (e.g. from an autonomous driving system 20) and attempts to engage the pneumatic parking brake 30 via a first mode 36. The first controller 14 transmits a parking brake status 24 to a second controller 26, which is a separate component from the parking brake system. If the parking brake status signal indicates a failure in the engagement of the pneumatic parking brake 30 via the first mode 36, the second controller 26 engages the pneumatic parking brake 30 via a second mode (38; fig. 2). The second mode may involve repeatedly engaging the service brakes to deplete pressure from the pneumatic parking brake or actuating a valve of the parking brake system.

Description

A METHOD FOR ENGAGING A PNEUMATIC PARKING BRAKE OF A PARKING
BRAKE SYSTEM OF A MOTOR VEHICLE
FIELD OF THE INVENTION
[0001] The invention relates to the field of automobiles. More specifically, the invention relates to a method for engaging a pneumatic parking brake of a parking brake system of a motor vehicle. Furthermore, the invention relates to a corresponding motor vehicle.
BACKGROUND INFORMATION
[0002] From the state of the art it is known that a motor vehicle, in particular a truck, comprises pneumatic brakes for parking the motor vehicle. Therefore, the parking brake system comprises a first controller, which can receive a parking signal from a system of the motor vehicle, for example, if a driver of the motor vehicle engages the parking brake or if an autonomous driving system engages the parking brake.
[0003] US 2020 369 246 Al discloses an electrohydraulic vehicle power brake system for a motor vehicle which may drive autonomously on public roads. A power brake pressure generator of the vehicle power brake system having two hydraulically parallel power valves is connected to the vehicle brake system and the two power valves are controlled using two redundant electronic control units.
[0004] US 2019 299 955 Al discloses an apparatus comprising a first circuit module and a second circuit module. The first circuit module may be configured to communicate with a vehicle over a first bus. The first circuit module generates one or more first brake control signals in response to one or more command inputs and is powered by a first power source. The first brake control signals provide primary control of hydraulic flow and pressure to control one or more brake calipers in a vehicle. The second circuit module may be configured to communicate with the vehicle over a second bus. The second circuit module generates one or more second brake control signals in response to said one or more command inputs and is powered by a second power source. The second brake control signals provide secondary control of hydraulic flow and pressure to control the one or more brake calipers. The first and the second circuit modules are fabricated on a single printed circuit board to provide redundant control of the one or more brake calipers.
[0005] US 2019 337 502 Al discloses an electronically controlled pneumatic brake system for a vehicle with a normal brake operating mode and a backup brake operating mode, said system comprising: a front axle brake module for providing pneumatic control pressure to the left and right front pneumatic brake actuators, one or more rear axle brake module for providing pneumatic control pressure to the left and right rear pneumatic brake actuators, a trailer brake interface, an air production module selectively providing air under pressure to said axles electronic brake modules via first and second air supply circuits, a trailer relay valve, wherein each of the front and rear axle brake modules is controlled by an electrical control signal under the normal brake operating mode and is controlled by a pneumatic backup brake control line under the backup brake operating mode, wherein the output of trailer relay valve is connected to the trailer brake interface under the normal brake operating mode, and the output of trailer relay valve is connected to the pneumatic backup brake control line under the backup brake operating mode.
SUMMARY OF THE INVENTION
[0006] It is an object of the invention to provide a method as well as a motor vehicle which allows for fail-operational engagement of the parking brake without adding a redundant parking brake controller.
[0007] This object is solved by a method as well as a motor vehicle according to the independent claims. Advantageous embodiments are presented in the dependent claims.
[0008] One aspect of the invention relates to a method for engaging a pneumatic parking brake of a parking brake system of a motor vehicle, wherein a first controller of the parking brake system receives a parking brake command, and the first controller attempts to engage the pneumatic parking brake via a first mode.
[0009] In an embodiment, the first controller transmits a parking brake status to a second controller.
[0010] In an embodiment, if the parking brake status comprises a failure signal in the engagement of the pneumatic parking brake via the first mode, the second controller engages the pneumatic parking brake via a second mode. In a further embodiment, the second controller is a separate component from the parking brake system.
[0011] Therefore, the method allows for fail-operational engagement of the parking brake without adding a redundant parking brake controller. The invention uses the existing hardware on the motor vehicle, such as the secondary controller which is configured to operate as an external component to the parking brake system.
[0012] In particular, existing hardware, such as the secondary controller, is used which uses a different method than the parking brake controller to release air from the pneumatic system to a low enough pressure to engage the parking brake which will hold the motor vehicle.
[0013] Therefore, the method prevents the need for a second parking brake controller and all of the support hardware, in particular pneumatic lines, power lines and communication lines, and an associated design. Furthermore, manufacturing and testing of the additional hardware is also not needed.
[0014] In another embodiment, the first controller receives the parking brake command from an autonomous driving system of the motor vehicle.
[0015] In another embodiment, the second mode comprises repeatedly engaging service brakes of the motor vehicle to deplete pressure from the pneumatic parking brake.
[0016] According to another embodiment, the second mode comprises actuating a valve of the parking brake system to deplete pressure from the pneumatic parking brake.
[0017] In another embodiment, the second controller observes the parking brake command from the autonomous driving system. The second controller identifies the failure signal in the parking brake status if the pneumatic parking brake is not indicated to be engaged after observing the parking brake command.
[0018] Further advantages, features, and details of the invention derive from the following description of preferred embodiments as well as from the drawings. The features and feature combinations previously mentioned in the description as well as the features and feature combinations mentioned in the following description of the figures and/or shown in the figures alone can be employed not only in the respectively indicated combination but also in any other combination or taken alone without leaving the scope of the invention.
BRIEF DESCRIPTION OF THE DRAWINGS
[0019] The novel features and characteristic of the disclosure are set forth in the appended claims. The accompanying drawings, which are incorporated in and constitute a part of this disclosure, illustrate exemplary embodiments and together with the description, serve to explain the disclosed principles. In the figures, the left-most digit(s) of a reference number identifies the figure in which the reference number first appears. The same numbers are used throughout the figures to reference like features and components. Some embodiments of system and/or methods in accordance with embodiments of the present subject matter are now described below, by way of example only, and with reference to the accompanying figures.
[0020] The drawings show in: [0021] Fig. 1 a schematic block diagram according to an embodiment of the invention; and [0022] Fig. 2 another schematic block diagram according to another embodiment of the invention.
[0023] In the figures the same elements or elements having the same function are indicated by the same reference signs.
DETAILED DESCRIPTION
[0024] In the present document, the word "exemplary" is used herein to mean "serving as an example, instance, or illustration". Any embodiment or implementation of the present subject matter described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments.
[0025] While the disclosure is susceptible to various modifications and alternative forms, specific embodiments thereof have been shown by way of example in the drawings and will be described in detail below. It should be understood, however, that it is not intended to limit the disclosure to the particular forms disclosed, but on the contrary, the disclosure is to cover all modifications, equivalents, and alternatives falling within the scope of the disclosure.
[0026] The terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion so that a setup, device or method that comprises a list of components or steps does not include only those components or steps but may include other components or steps not expressly listed or inherent to such setup or device or method. In other words, one or more elements in a system or apparatus preceded by "comprises" or "comprise' does not or do not, without more constraints, preclude the existence of other elements or additional elements in the system or method.
[0027] In the following detailed description of the embodiments of the disclosure, reference is made to the accompanying drawings that form part hereof, and in which are shown by way of illustration specific embodiments in which the disclosure may be practiced. These embodiments are described in sufficient detail to enable those skilled in the art to practice the disclosure, and it is to be understood that other embodiments may be utilized and that changes may be made without departing from the scope of the present disclosure. The following description is, therefore, not to be taken in a limiting sense.
[0028] Fig. 1 shows a schematic block diagram according to an embodiment of a motor vehicle 10. The motor vehicle 10 comprises a parking brake system 12. The parking brake system 12 may comprise a first controller 14 and pneumatic parking brake 30.
[0029] According to an embodiment, Fig. 1 shows a method for engaging the pneumatic parking brake 30 of the parking brake system 12, wherein the first controller 14 of the parking brake system 12 receives a parking brake engage command 18, for example from an autonomous driving system 20 of the motor vehicle 10, and the first controller 14 engages (represented by the arrow 22) the pneumatic controls 16 of the parking brake system 12 to set the pneumatic parking brake 30 via a first mode.
[0030] According to an embodiment, if the first controller 14 of the parking brake system 12 fails to set the park brake 30, the first controller 14 transmits a failure signal 24 to a second controller 26, which is a separate component from the parking brake system 12, and depending on the failure signal 24, the second controller 26 performs an alternative function 28 that engages the pneumatic controls 16 that results in the pneumatic parking brake 30 being set via a second mode.
[0031] In particular, the second controller 26 is configured to operate as a separate component from the parking brake system 12. Furthermore, a parking brake status signal 32 may be transmitted from the first controller 14 to the autonomous driving system 20.
[0032] In particular, Fig. 1 shows that in this embodiment the autonomous driving system 20 commands the parking brake 30 to engage. The first controller 14 receives the command 18 and engages the pneumatic controls 16 to set the parking brake 30. The first controller 14 sends the parking brake status signal 32 back to the autonomous driving system 20. In the fail-operational park brake application mode (e.g. the second mode), the first controller 14 fails to set the parking brake 30 when commanded by the autonomous driving system 20. The second controller 26 outside of the parking brake system 12 uses another method (i.e. alternative function 28) to engage the parking brakes 30 by releasing air from the system. For example, alternative function 28 may, for example, comprise repeatedly engaging the service brakes until the system depletes air pressure and the pneumatic parking brake 30 is set, or engage a valve to release the air. Alternatively to the autonomous driving system 20, a human driver may send the parking brake command 18, for example through a switch, button, lever, or a user interface, such as a digital interface, operable in the cabin of the vehicle 10. The human driver may further receive the parking brake status 32 through a signal, such as an audible, light, or digital signal through a user interface in the cabin of the vehicle 10.
[0033] Fig. 2 shows another schematic view according to another embodiment of the method. In particular, Fig. 2 shows the first controller 14 as well as the second controller 26. Furthermore, Fig. 2 shows the autonomous driving system 20. The autonomous driving system 20 may transmit the parking brake command 18 to the first controller 14. The first controller 14 may transmit a parking brake status 32 to the second controller 26 as well as a health status signal 34. The first controller 14 may, via the first mode 36, engage the pneumatic controls 16 to set the parking brake 30. In an embodiment, the parking brake 30 is nominally set via the first mode 36. If the nominal engagement of the parking brake 30 fails, the second controller 26, via the second mode 38, may engage the pneumatic controls 16 to set the parking brake 30. In an embodiment, the parking brake 30 is engaged in a fail-operational park brake application mode via the second mode 38.
In an embodiment, the engagement 38 may be a pneumatic signal that results in mechanical motion that depressurizes the pneumatic parking brake 30 of the vehicle 10, such as repeated engagement of the service brakes. In an alternative embodiment, the engagement 38 may be an electrical signal that actuates a valve to depressurize the pneumatic parking brake 30. In an embodiment, the second controller 26 also receives the parking brake command 18 from the autonomous driving system 20, wherein the second controller 26 may only be configured to observe the parking brake engage command 18.
[0034] In particular, the second controller 26 may observe the parking brake engage command 18 from the autonomous driving system 20, and the parking brake status 32 from the first controller 14. In an embodiment, if the parking brake engage command 18 is observed by the second controller 26 to be received by the first controller 14, and the parking brake 30 is not observed to be engaged through the parking brake status 32, then the second controller will execute fail-operational parking brake engagement via the second mode 38. For example, the parking brake status 32 may comprise the failure signal 24 received by the second controller 26 from the first controller 14. In particular, the failure signal 24 may indicate that the parking brake 30 is not engaged after an observed parking brake engage command 18 from the autonomous driving system 20.
Reference Signs motor vehicle 12 parking brake system 14 first controller 16 pneumatic controls 18 parking brake engage command autonomous driving system 22 parking brake engagement 24 failure signal 26 second controller 28 alternative function pneumatic parking brake 32 parking brake status signal 34 health status signal 36 first mode 38 second mode

Claims (6)

  1. CLAIMS1. A method for engaging a pneumatic parking brake (30) of a parking brake system (12) of a motor vehicle (10), wherein a first controller (14) of the parking brake system (12) receives a parking brake command (18) and the first controller (14) attempts to engage the pneumatic parking brake (30) via a first mode (36), characterized in that the first controller (14) transmits a parking brake status (32) to a second controller (26), and if the parking brake status (32) comprises a failure signal (24) in the engagement of the pneumatic parking brake (30) via the first mode (36), the second controller engages the pneumatic parking brake (30) via a second mode (38), characterized in that the second controller (26) is a separate component from the parking brake system (12).
  2. 2. The method according to claim 1, characterized in that the first controller (14) receives the parking brake command (18) from an autonomous driving system (20) of the motor vehicle (10).
  3. 3. The method according to claim 1 or 2, characterized in that the second mode (38) comprises repeatedly engaging service brakes of the motor vehicle (10) to deplete pressure from the pneumatic parking brake (30).
  4. 4. The method according to any one of claims 1 to 3, characterized in that the second mode (38) comprises actuating a valve of the parking brake system (12) to deplete pressure from the pneumatic parking brake (30).
  5. 5. The method according to any one of claims 2 to 4, characterized in that the second controller (26) observes the parking brake command (18) from the autonomous driving system (20).
  6. 6. The method according to claim 5, characterized in that the second controller (26) identifies the failure signal (24) in the parking brake status (32) if the parking brake (30) is not indicated to be engaged after observing the parking brake command (18).
GB2116052.8A 2021-11-09 2021-11-09 A method for engaging a pneumatic parking brake of a parking brake system of a motor vehicle Withdrawn GB2612644A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2116052.8A GB2612644A (en) 2021-11-09 2021-11-09 A method for engaging a pneumatic parking brake of a parking brake system of a motor vehicle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2116052.8A GB2612644A (en) 2021-11-09 2021-11-09 A method for engaging a pneumatic parking brake of a parking brake system of a motor vehicle

Publications (1)

Publication Number Publication Date
GB2612644A true GB2612644A (en) 2023-05-10

Family

ID=85986988

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2116052.8A Withdrawn GB2612644A (en) 2021-11-09 2021-11-09 A method for engaging a pneumatic parking brake of a parking brake system of a motor vehicle

Country Status (1)

Country Link
GB (1) GB2612644A (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20200406879A1 (en) * 2018-02-19 2020-12-31 Knorr-Bremse Systeme Fuer Nutzfahrzeuge Gmbh Electropneumatic equipment of a vehicle
US20210277995A1 (en) * 2020-03-09 2021-09-09 Bendix Commercial Vehicle Systems Llc Method and parking brake apparatus for an autonomously drivable vehicle
US20210339725A1 (en) * 2018-09-18 2021-11-04 Knorr-Bremse Systeme Fuer Nutzfahrzeuge Gmbh Brake system for a vehicle
CN113602243A (en) * 2021-08-31 2021-11-05 东风商用车有限公司 Emergency braking device for unmanned vehicle

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20200406879A1 (en) * 2018-02-19 2020-12-31 Knorr-Bremse Systeme Fuer Nutzfahrzeuge Gmbh Electropneumatic equipment of a vehicle
US20210339725A1 (en) * 2018-09-18 2021-11-04 Knorr-Bremse Systeme Fuer Nutzfahrzeuge Gmbh Brake system for a vehicle
US20210277995A1 (en) * 2020-03-09 2021-09-09 Bendix Commercial Vehicle Systems Llc Method and parking brake apparatus for an autonomously drivable vehicle
CN113602243A (en) * 2021-08-31 2021-11-05 东风商用车有限公司 Emergency braking device for unmanned vehicle

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COOA Change in applicant's name or ownership of the application

Owner name: DAIMLER TRUCK AG

Free format text: FORMER OWNER: DAIMLER AG

WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)