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
  • 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
  • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
  • B60Q5/00—Arrangement or adaptation of acoustic signal devices
  • B60Q5/005—Arrangement or adaptation of acoustic signal devices automatically actuated
• • 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
• • 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
  • 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
  • B60T7/20—Brake-action initiating means for automatic initiation; for initiation not subject to will of driver or passenger specially for trailers, e.g. in case of uncoupling of or overrunning by trailer
• • 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
  • B60T8/17—Using electrical or electronic regulation means to control braking
  • B60T8/1701—Braking or traction control means specially adapted for particular types of vehicles
  • B60T8/1708—Braking or traction control means specially adapted for particular types of vehicles for lorries or tractor-trailer combinations
• • 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
  • B60T8/17—Using electrical or electronic regulation means to control braking
  • B60T8/171—Detecting parameters used in the regulation; Measuring values used in the regulation
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
  • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
  • F16D66/00—Arrangements for monitoring working conditions, e.g. wear, temperature
• • G—PHYSICS
  • G07—CHECKING-DEVICES
  • G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
  • G07C5/00—Registering or indicating the working of vehicles
  • G07C5/006—Indicating maintenance
• • G—PHYSICS
  • G07—CHECKING-DEVICES
  • G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
  • G07C5/00—Registering or indicating the working of vehicles
  • G07C5/008—Registering or indicating the working of vehicles communicating information to a remotely located station
• • G—PHYSICS
  • G07—CHECKING-DEVICES
  • G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
  • G07C5/00—Registering or indicating the working of vehicles
  • G07C5/08—Registering or indicating performance data other than driving, working, idle, or waiting time, with or without registering driving, working, idle or waiting time
  • G07C5/0808—Diagnosing performance data
• • G—PHYSICS
  • G07—CHECKING-DEVICES
  • G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
  • G07C5/00—Registering or indicating the working of vehicles
  • G07C5/08—Registering or indicating performance data other than driving, working, idle, or waiting time, with or without registering driving, working, idle or waiting time
  • G07C5/0816—Indicating performance data, e.g. occurrence of a malfunction
• • 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
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
  • B60Y2200/00—Type of vehicle
  • B60Y2200/10—Road Vehicles
  • B60Y2200/14—Trucks; Load vehicles, Busses
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
  • B60Y2400/00—Special features of vehicle units
  • B60Y2400/81—Braking systems
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
  • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
  • F16D66/00—Arrangements for monitoring working conditions, e.g. wear, temperature
  • F16D2066/001—Temperature
• • G—PHYSICS
  • G06—COMPUTING OR CALCULATING; COUNTING
  • G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
  • G06Q10/00—Administration; Management
  • G06Q10/20—Administration of product repair or maintenance

Definitions

• the invention relates to a method for avoiding overheating of a brake of a vehicle according to the preamble of claim 1.
• the invention also relates to a corresponding control unit.
• thermal overload of the functional parts involved can also result from a so-called hot running.
• hot running is done by a light application of the brake pads, which can permanently lead to thermal damage to the brake pads and the mechanical parts of the disc brake, such as guides, seals or the like.
• critical in terms of thermal overload is also a permanent
• the invention has for its object to develop a method that increases the service life of the disc brake and their reliability is optimized.
• An inventive method for avoiding overheating of a brake of a vehicle, in particular a commercial vehicle, and / or a trailer comprises the following steps:
• Reading in a first temperature signal and at least one second temperature signal the first temperature signal representing a temperature of the brake and / or a functional part of the brake, and wherein the at least second temperature signal represents at least one further temperature of at least one further brake of the vehicle;
• the method according to the invention is, so to speak, a thermal management which not only detects the operational temperatures by means of sensors, which provides and evaluates operational temperatures as a temperature signal representing the temperature, but, if necessary, readjusts the functional parts as far as possible.
• a control signal is provided which represents a reference variable for at least one functional part.
• the readjustment is computer-controlled.
• the method may be on a brake or in a Braking system to be executed.
• the brake may be a disc brake or a drum brake.
• the brake may be disposed on one axle and the further brake may be disposed on the same axle or on another axle.
• the brake may be disposed on one axle and the further brake may be disposed on the same axle or on another axle.
• a temperature difference in the step of determining a temperature difference is determined as a difference between the temperature signal and the further temperature signal, and the error state is determined when the temperature difference exceeds a difference threshold.
• the difference threshold may be predetermined, e.g. based on previously performed measurement series.
• a further embodiment provides to read in the step of reading an additional temperature signal representing an additional temperature of an additional brake and / or a functional part of the additional brake, and to determine the error state using the additional temperature signal in the step of Befitteins. This can increase accuracy.
• the step of determining the temperature difference may be determined as the difference between the temperature signal or the temperature and an average of the temperature signals or the temperatures represented by the temperature signals, in particular the median, trimmed average, arithmetic mean and / or expected value is defined.
• the signal transmission can be done wirelessly. This means that signal transmission from the sensor to the evaluation device and from there possibly to an actuator takes place wirelessly, that is to say via radio or the like, the regulation of the functional parts taking into account the state of the disc brake.
• the temperature measurement can be done directly or indirectly on different functional parts.
• the temperature signal representing at least one temperature of at least one functional part can be provided by a temperature sensor, such as a thermocouple, a resistance thermometer or a non-contact measuring thermometer, such as a radiation thermometer, or derived from another sensor signal.
• a corresponding sensor can be arranged, for example, on a pole wheel, on the brake disc of the disc brake, on one or both brake linings or on a brake caliper part, as well as on electronic components in the manner of separate or integrated thermocouples, as used for temperature compensation.
• the temperature is measured on lining wear sensors, which are integrated in the brake pads.
• the temperature measurement may be performed using a flywheel and / or an ABS sensor.
• a flywheel and / or an ABS sensor This can be advantageously used a sensor for two functions.
• a signal amplitude of the Polradsensors represent a temperature of a functional part, wherein the frequency of the rotational speed and the amplitude of the temperature correspond.
• EBS electronic braking system
• radiation pyrometers can be used, wherein in the case of a disc brake is preferably provided on both sides of the brake disc in each case a radiation pyrometer.
• a radiation pyrometer an infrared thermometer in the form of, for example, a narrow-band pyrometer, with germanium photodiode or indium gallium arsenide photodiode or band radiation pyrometer can be used, as well as a quotient pyrometer.
• Thermally affected states of the brake arise, for example, from glazing brake pads that result from too low contact pressure and too low temperature at the brake pads, resulting in a loss of the coefficient of friction of the brake pads.
• This can be e.g. by the predominant use of continuous braking systems, such as Retarders and other secondary auxiliary brake systems with brake energy recovery, as used for example in hybrid vehicles result.
• continuous braking systems such as Retarders and other secondary auxiliary brake systems with brake energy recovery
• a load balance between a plurality of brakes can be requested or initiated.
• a request can be sent to a control device by a control unit (ECU), so that in the case of In the presence of glazed pads supporting brakes are switched off to increase the braking force and subsequently the temperature at the brake with glazing pads.
• Supportive brakes may be retarders or recuperative brakes mounted on the axle or wheel. That is, the service brakes are sometimes used in front of an engine brake and / or the retarders or recuperative brakes.
• a greater braking force can be exerted on the glazing brake pads without increasing a total deceleration of the vehicle, whereby the resulting increased braking force on the glazing brake pads counteracts the state of vitrification and the coefficient of friction of the brake pads is increased again.
• the basic temperature of the brake such as a disc brake is maintained at a defined elevated level, so that said cold wear or vitrification of the brake pads is avoided. This results in a significant improvement in cost-effectiveness. This applies equally to the possibility of the vehicle driver on the basis of NEN signals when exceeding a target temperature of all disc brakes to detect and then react, so as to avoid a corresponding continuous load of the disc brakes.
• a slightly constant increase in the temperature when the wheel is rotating on the brake linings can indicate a temporary malfunction of the mechanical brake, eg the guidance of the brake lining or the brake caliper guide. If this condition is detected, once a higher brake pressure can be applied to the disc brake at the next braking to achieve a release of the clamping guide. Alternatively, in a stationary vehicle, the brake can be actuated to achieve release of a clamping guide. If this does not lead to an improvement in the malfunction, the brake request can be reduced to the disc brake and a visual and / or audible warning is triggered.
• a hot run of the brake can occur due to a malfunction resulting from a no longer sufficient clearance for the freedom of the brake disc and a self-adjusting residual braking torque. In such a state of a brake occurring heat can lead to a self-reinforcing effect.
• This residual braking torque caused by a thermal expansion of the brake disc and / or brake pads, can be achieved by actively removing the brake pads from the brake disc (clearance increase), e.g. using a bidirectional adjuster, be compensated. With the aid of the invention, this actively controlled Lbulspielver broughtrung be initiated. Thus, by a one-time large request for braking and / or by reducing the brake request, the brake can be put back into a functional state, or an undesirable misconduct can be avoided.
• optimization of the thermal brake condition can be achieved by distributing the brake request only in a stable running range, i. in the low brake pressure and deceleration area.
• a compensation of the braking power between a plurality of brakes of an axle can take place.
• a compensation of the braking power between brakes of a plurality of axes take place.
• the braking request distribution can be used limited to the driving stable area.
• the drive-stable region can be arranged in the low brake pressure and deceleration region.
• the evaluation unit reduces the friction work of a brake, e.g. detected by reduced temperature emission or a reduced emission value and thus a reduced friction coefficient of the friction pair, so a so-called plaster braking can be initiated.
• the described condition may be due to a previous high thermal load e.g. be caused with a disc brake, in particular with material transfer to the brake disc or by a little used for a long period brake, which is also known as "falling" pads.
• the braking unevenly, ie within stable driving parameters are distributed to the brakes, so that the thermally impaired brake contains a brake pressure request that causes a brushing of the brake pad surface.
• Non-thermally stressed brakes are reduced by a reduced braking requirement.
• the compensation of the braking request can also be made diagonally, i. for example, front right and rear left. So can advantageously be maintained a stable driving condition.
• the level of the temperature and the time course of the temperature increase and temperature cooling after a successful braking can differ between two vehicles due to a variety of vehicle configurations and wheel house designs, such as buses and trucks. This can be mapped in a replacement model. In order to obtain appropriate parameters here, it can be checked after application of the brake pressure within which time the temperature is set.
• a check of the emitted signal can be carried out by comparison with other wheels or brakes of the vehicle.
• the replacement model can map the heat conduction or the heat transfer and additionally or alternatively the heat capacity and cooling of the brake, the adjacent components and additionally or alternatively the environment.
• An inventive control device for carrying out the method for avoiding overheating a brake of a vehicle, in particular a commercial vehicle and / or a trailer has the following facilities: Interface for reading a first temperature signal and at least a second temperature signal, wherein the first temperature signal is a temperature represents the brake and / or a functional part of the brake and wherein the at least second temperature signal represents at least one further temperature of at least one further brake of the vehicle; and means for determining an error condition of the brake using the first temperature signal and the second temperature signal to avoid overheating the brake.
• the control unit may be designed to perform or implement the steps of a variant of a method presented here in corresponding devices.
• an electrical device or an electrical circuit such as an integrated circuit understood.
• a control device may also be understood to mean a control device, an ECU or a control device.
• the controller may be part of an electronic braking system.
• the control unit can be designed to receive and output signals via suitable interfaces. The idea underlying the invention can also be implemented efficiently by the control unit.
• a control device can be understood as meaning an electrical device which processes sensor signals and outputs control and / or data signals as a function of the sensor signals.
• the interfaces of the control device can be designed in hardware and / or software.
• the interfaces can be part of a so-called system ASIC, for example, which contains various functions of the control device.
• the interfaces can also be designed as separate, integrated circuits or at least partially consist of discrete components.
• the interfaces may be software modules that are present, for example, on a microcontroller in addition to other software modules.
• a brake for a vehicle is configured to provide a temperature signal to avoid overheating the brake.
• a braking system for a vehicle in particular a commercial vehicle and / or a trailer, comprises the control unit described above, a first brake described above arranged on an axle and a second brake described above, arranged on the same axle and / or on a further axle is.
• a vehicle in particular a commercial vehicle and / or a trailer has the braking system described above.
• a computer program product with program code which can be stored on a machine-readable carrier such as a semiconductor memory and used to carry out the method according to one of the embodiments described above, when the computer program product is executed on a control device or the control device described above.
• a software for an electronic brake system EBS
• the method according to the invention can be updated such that new fault states, as determined in field operation or in field trials, are stored.
• the brakes can be operated to optimize braking performance, including brake wear.
• the service life, in particular the brake pads of the individual brakes used on a vehicle can thus be adjusted.
• an acoustic and supplementary or alternatively an optical signal can be output in one embodiment.
• a driver can be made aware of the error condition early, which can reduce a time interval until the error correction.
• the determined error condition can be transmitted via a logbook or geolocation system to a workshop for the provision of a replacement part, or planning of a service interval.
• predictive spare parts delivery via a logbook or geolocation system and information sharing to repair shops via telecommunications may be enabled.
• This relates in particular to the provision of spare parts, such as brake pads, replacement brakes and the planning of service intervals, which is possible via the thermal detection of the state of the disc brake.
• FIG. 1 is a schematic block diagram of a vehicle with a brake system according to an embodiment of the present invention.
• FIG. 2 is a flowchart of a method according to an embodiment of the present invention.
• the same or similar reference numerals are used for the elements shown in the various drawings and similar, and a repeated description of these elements will be omitted.
• the vehicle 1 shows a schematic block diagram of a vehicle 100 with a brake system according to one exemplary embodiment of the present invention.
• the vehicle 1 00 includes in the illustrated embodiment, a commercial vehicle 1 02 and a trailer 1 04.
• a forward direction is indicated by an arrow.
• the commercial vehicle 1 02 has three axes 1 1 0, 1 20, 130, each with two brakes 1 1 2, 1 14, 1 22, 1 24, 1 32, 134, each with a brake 1 1 2, 122, 1 32nd on the right in the direction of travel of the commercial vehicle 1 02 vehicle side and a brake 1 14, 1 24, 134 is arranged on the left side of the vehicle. Furthermore, the commercial vehicle 1 02 on a control unit 140.
• the brakes are designed to provide at least one temperature signal t1 1 2, t1 14, t1 22, t1 24, t1 32, t1 34, which is supplied to the control unit 140 via a respective signal line and read by the control unit 140.
• the controller 140 is configured to provide at least one brake request signal 142.
• the brake request signal 142 is transmitted via a respectively associated signal line to each brake 1 1 2, 1 14, 1 22, 124, 132, 1 34.
• a brake request signal 142 is provided per axis 1 1 0, 1 20, 1 30.
• the trailer 1 04 has two axles 1 50, 1 60, each with two brakes 1 52, 1 54, 1 62, 1 64, each with a brake 1 52, 1 62 on the right in the direction of the trailer 1 04 vehicle side and a Brake 1 54, 1 64 is arranged on the left side of the vehicle. Furthermore, the trailer 1 04 a trailer control unit 170.
• the brakes 1 52, 1 54, 1 62, 1 64 are designed to provide at least one temperature signal t1 52, t1 54, t1 62, t1 64, which is supplied to the trailer control unit 1 70 via a respective signal line and read by the trailer control unit 1 70 becomes.
• the trailer control unit 1 70 is configured to provide at least one brake request signal 1 72.
• the brake request signal 1 72 is transmitted via a respectively associated signal line to each brake 1 52, 1 54, 1 62, 1 64.
• a braking request signal 1 72 is provided per axle 1 50, 1 60.
• the control unit 140 for avoiding overheating of a brake of a vehicle, in particular a commercial vehicle and / or a trailer, comprises an interface 144 for reading a first temperature signal and at least a second temperature signal, wherein the first temperature signal is a temperature of the brake and / or a functional part of the Brake represents and wherein the at least second temperature signal represents at least one further temperature of at least one further brake of the vehicle and a determination means 146 for determining a fault condition of the brake using the first temperature signal and the second temperature signal to prevent overheating of the brake
• the interface 144 is designed for reading, the temperature signals t1 1 2, t1 14, t1 22, t1 24, t1 32, t1 34 read the brakes of the commercial vehicle 1 02.
• the control unit 140 is designed to detect a fault condition of a brake when the relevant temperature of this brake deviates from a temperature deviation greater than a threshold value from an average value of the temperatures of all the brakes.
• the trailer control unit 170 of the trailer 1 04 corresponds substantially functionally to the control unit 140 of the commercial vehicle, with the difference that the temperature signals t1 52, t154, t1 62, t1 64 of the brakes 1 52, 1 54, 1 62, 1 64 of the trailer. 1 04 are read and monitored.
• the functionality of the trailer control unit 1 70 of the trailer 1 04 is integrated into the control unit 140 of the commercial vehicle 1 02.
• control unit 140 of the commercial vehicle 1 02 and the trailer control unit 1 70 of the trailer 1 04 are coupled together.
• a braking request can be distributed between the trailer 1 04 and the commercial vehicle 1 02.
• the two controllers 140, 1 70 operate independently of each other.
• the vehicle 1 00 has a control unit 140 which distributes a braking request to the axles 1 1 0, 1 20, 1 30 of the commercial vehicle 1 02 and the axles 1 50, 1 60 of the trailer 1 04 in the event of a recognized fault condition ,
• control unit 140 can, during a normal braking request, determine the relevant brake or, alternatively, the brakes of the affected axle with a hot brake do not take into account and distribute the braking request to the remaining brakes. Not until the required deceleration exceeds a comparison value, regardless of the hotter brake
• an ABS sensor or a flywheel is used to determine the temperature.
• a pole wheel with an inductive sensor is used, wherein in one embodiment, the amplitude of the sensor signal is evaluated to determine a temperature.
• a change in resistance of the particular sensor is monitored to determine the temperature.
• other measuring methods for determining and detecting the temperature are used.
• FIG. 2 shows a method 200 according to an embodiment of the present invention.
• the method 200 for avoiding overheating of a brake of a vehicle, in particular a utility vehicle and / or a trailer, comprises a step 21 0 of reading in and a step 220 of the determination.
• the vehicle may be a variant of an embodiment of a vehicle 100 shown in FIG. 1.
• step 21 0 of reading is a first temperature signal of a first brake of the brakes 1 1 2, 1 14, 1 22, 1 24, 1 32, 134, 1 52, 1 54, 1 62, 1 64 of the vehicle 1 00 and a second temperature signal of a second brake of the brakes 1 1 2, 1 14, 1 22, 124, 1 32, 1 34, 1 52, 1 54, 1 62, 1 64 of the vehicle 1 00 read.
• an error condition is determined using the temperature signals. An error condition is determined when one of the brakes 1 1 2, 1 14, 122, 1 24, 1 32, 1 34, 1 52, 1 54, 1 62, 1 64 of the vehicle 1 00 runs hot.
• the brake in question does not completely loosen and thus has a braking effect even in the unactuated state, resulting in heat production.
• a mechanical fault such as a jamming guide
• the brake in question does not completely loosen and thus has a braking effect even in the unactuated state, resulting in heat production.
• the measured temperature depends on the brake in question, the type of installation, the location of the temperature sensor and other factors, it is difficult to output the fault condition when an absolute temperature is reached.
• the absolutely measured temperature with a threshold value or comparison or reference value are compared to detect a fault condition.
• a brake is identified when the temperature deviates from the average of all brakes by more than a defined tolerance range.
• the brake concerned is defined below braking during braking operations
• Braking delay not actuated. If the required deceleration exceeds the defined deceleration threshold value, for example in the case of an emergency stop or full braking, all brakes are actuated, regardless of a detected error condition. If an error condition is detected, in one exemplary embodiment an acoustic and additionally or alternatively an optical signal is output. Furthermore, in a particular embodiment, the error condition is transmitted to an infrastructure facility for service purposes, for example for maintenance purposes or for the procurement of spare parts. This can be done in parallel with the transmission of other parameters of an electronic logbook.
• a further method step may be provided to eliminate or reduce the error condition.
• the brake request to the affected brake can be increased in order, for example, to release a jamming guide again.
• the affected brake can be actuated at a standstill of the vehicle 100, in particular repeatedly operated to effect a movement of the moving parts of the brake without braking torque and thus again to achieve a fault-free state of the brake.

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Transportation (AREA)
• General Engineering & Computer Science (AREA)
• Physics & Mathematics (AREA)
• General Physics & Mathematics (AREA)
• Acoustics & Sound (AREA)
• Valves And Accessory Devices For Braking Systems (AREA)
• Braking Arrangements (AREA)
• Regulating Braking Force (AREA)

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Applications Claiming Priority (2)

Related Child Applications (1)

Publications (1)

Family

ID=55754296

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Families Citing this family (28)

Citations (7)

Family Cites Families (16)

• 2015
  • 2015-04-17 DE DE102015105862.6A patent/DE102015105862A1/de active Pending
• 2016
  • 2016-04-15 EP EP16716865.7A patent/EP3283342B1/de active Active
  • 2016-04-15 BR BR112017022007-5A patent/BR112017022007A2/pt not_active Application Discontinuation
  • 2016-04-15 EP EP16716574.5A patent/EP3283341B1/de active Active
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