340results about "Brake safety systems" patented technology

A brake system and method of control. A brake pad assembly is actuatable from a retracted position to an extended position with a fluid. The method includes determining whether a running clearance is acceptable based on a first fluid supply pressure associated with the brake pad assembly being in a retracted position and a second fluid supply pressure associated with the brake pad assembly being in an extended position.

A trailer control box may receive a wireless message from a controller of the tractor. The trailer control box may validate and authenticating the message. The trailer control box may control an emergency-brake valve based on the message when the message is an emergency-brake command. The trailer control box may control a service-brake valve based on the message when the message is a service-brake command. The trailer control box may control at least one switch to operate trailer lights based on the message when the message is a light command. In certain embodiments, autonomous-capable socket is mounted to a trailer and includes: a chamfered outer casing, a plurality of electrical connectors, a service-brake air aperture, and an emergency-brake air aperture. The autonomous-capable socket required a single autonomous connection by an autonomous tractor.

Methods and systems are provided for controlling braking to avoid groan noise in a braking system. The system has a brake actuator configured to apply a friction force to a moving member, a conduit system coupled with the brake actuator, an inlet valve in the conduit system configured to control fluid pressure delivered to the brake actuator, and an outlet valve in the conduit system configured to control fluid pressure released from the brake actuator. The system includes a controller to monitor for an upper target pressure condition in the braking system, wherein the upper target pressure condition is associated with a noise zone; and operate, when the upper target pressure is detected and in a noise zone avoidance mode, the inlet valve and the outlet valve to avoid brake pressures that generate a brake noise from the friction force.

The invention relates to an assembly comprising a railway braking system (4) for a railway vehicle (1) with brakes having at least one lining or at least one shoe as well as a set of devices for equipping the railway braking system (4), comprising a first device (90) provided with a first mounting member, a second device (21) provided with a second mounting member, and a third device (33) provided with a third mounting member, the assembly comprising a common interface body (34) that is mechanically secured to the actuating mechanism (15) and is at least temporarily mechanically secured to the rotary actuating apparatus (16) and is configured to receive each of the first mounting member, the second mounting member and the third mounting member for at least temporarily mechanically securing at least one of the first device, the second device and the third device to the actuating mechanism (15) and / or to the rotary actuating apparatus (16).

A braking system and control method are disclosed. The braking system includes a friction brake, a sensor unit, and a controller. The sensor unit is disposed on the brake pad assembly of the friction brake and includes a first sensor and a second sensor electrically connected to the first sensor.

A method for electronic air gap control of an electrical motor vehicle brake system comprises electrical wheel brakes, wherein a resting position is adopted and maintained by supplying electric energy. Mechanical elements for adjusting the resting position can thus be dispensed with. Furthermore, an electrical motor vehicle brake system comprising electrical wheel brakes for carrying out such an electronic air gap control method is described.

This invention discloses a redundant braking system, a vehicle braking system, and a vehicle. The redundant braking system includes a redundant braking pressure module, a switching module, and a redundant anti-lock braking module connected to the redundant braking pressure module. When the redundant braking system is activated, the switching module switches the state of the first connection line between the redundant braking pressure module and the vehicle's brake fluid module to a conductive state, switches the state of the second connection line between the brake fluid module and the vehicle's main braking pressure module to a disconnected state, switches the state of the redundant anti-lock braking module from an inactive state to an active state, and switches the state of the main anti-lock braking module from an active state to an inactive state. This allows for the deployment of a redundant braking system on top of the vehicle's existing main braking system, effectively improving the safety and reliability of the vehicle's braking system.

The invention relates to a rail vehicle brake, in particular for freight wagons, comprising a monitoring device and to a method for monitoring a rail vehicle brake. A rail vehicle brake (1), in particular for freight wagons, has a brake lever (1a) comprising a brake shoe (5), a brake cylinder (3), a lever adjuster (4) and a monitoring device (10). The monitoring device (10) has a detection unit (7, 7a, 7b, 7c, 7d, 8, 9) comprising corresponding sensors (71, 72, 73, 74, 75, 77, 81, 82, 90) which are formed by access to an electrical energy supply network of a rail vehicle to be equipped with the supply of electrical energy. A rail vehicle and a method for monitoring a rail vehicle brake (1) are provided.

An electromechanical brake actuator (400) for vehicles, particularly railway vehicles, is described, comprising a safety unit (401) configured to: receive an electrical position signal (221) whose value indicates the position of a braking force application device (217) along a translation axis (Xt); determine the instantaneous position of the braking force application device (217) based on the value of the electrical position signal (221); and prevent a braking force control signal (204) or a power supply signal (405) from the service brake control unit (202) from reaching the electromechanical module (201) by a first interruption device (403) when: a) the safety unit (401) determines that the braking force application device (217) is in a position between a maintenance position and a stationary position; or b) the safety unit determines that the braking force application device (217) is moving from a stationary position to a maintenance position. A braking system is also described.

Method for brake control of a vehicle combination consisting of a towing vehicle with a hydraulic or pneumatic braking system and at least one attachable trailer with a pressure-controlled pneumatic braking system, in which an electronic brake control valve (2) is used, which has at least two solenoid switching valves controllable by an electronic control unit (8), which are designed as an inlet valve (12) and an outlet valve (14), wherein a brake control pressure (pBC) can be generated by means of the brake control valve in a brake control line (42, 42') running from a brake control output (p22) of the brake control valve to a coupling head "brake" (6) of the towing vehicle or to a trailer brake valve of the trailer and / or a coupling head "brake" at the rear of the trailer, and in which the trailer status is determined to ascertainwhether the towing vehicle is connected to a trailer and / or what the volumetric pressure (VBC) of the brake control line is. It is provided that a target pressure (pz) to be set in the brake control line is specified, that this pressure is introduced into the brake control line by pulsed opening of the inlet valve and / or the outlet valve, that the brake control pressure in the brake control line is measured during pressure build-up, and that a characteristic value for the trailer status and / or the volumetric pressure of the brake control line is determined from the pressure profile over time and / or the switching states of the inlet valve and / or the outlet valve until the target pressure is reached.

A vehicle electronic system including a parking brake equipment, comprising a brake element (2) including either a brake pad or a brake shoe, said brake element (2) including an electrical circuit equipped with one or more sensors (3, 4, 5) for real-time detection of signals relating to temperatures and / or to normal forces and / or to shear forces and having electrical terminals arranged in a zone for collecting the signals from the brake element, said vehicle electronic parking brake system further comprising an actuator (8) of the brake element (2), a controller (7) delivering a braking force command to the actuator (8), and regulating means (9, 10) driving the controller (7), wherein the regulating means (9, 10) include a closed regulating loop of the braking force including a reference braking force generator (10), said closed regulating loop of the braking force being communicating with said sensors (3, 4, 5) to acquire at least one of temperatures and / or normal forces and / or shear forces measurements.

The invention relates to a driver brake wish sensor (10a, 10b) for a vehicle, having a sensor memory unit (10e, 10f) in which at least one authentication key (#1 and #2) is stored and a sensor electronics (10c, 10d) by means of which at least one sensor signal (16a to 16d) can be output to at least one electric brake device (12a, 12b) as a sensor signal (16a to 16d) that is encrypted and / or authenticated with the at least one authentication key (#1 and #2). Furthermore, the invention relates to an electric brake device (12a, 12b) for a vehicle for interaction with at least one driver brake wish sensor (10a, 10b), having a memory unit (12e, 12f) in which at least one ID information (ID1 and ID2) about at least one stored authentication key (#1 and #2) is stored and a motor control device (12c, 12d) by means of which it can be determined whether at least one signal provided to the electric brake device (12a, 12b) is encrypted and / or authenticated with the at least one authentication key (#1 and #2) and only then the motor of the electric brake device (12a, 12b) is actuated by means of the motor control device (12c, 12d) taking into account the at least one signal provided.

The application relates to a new energy vehicle braking particulate emission control method, device, equipment and medium, which comprises the following steps: predicting a braking event of a new energy vehicle in a current driving cycle according to navigation or memory travel or intelligent driving road coordination data; determining a braking energy distribution weight of the target new energy vehicle according to an actual vehicle weight, a current battery residual capacity and a current motor state; determining recoverable electric braking energy and mechanical braking energy of the target new energy vehicle according to the actual total braking energy and the braking energy distribution weight; calculating and determining the braking wear degree of the target new energy vehicle corresponding to the braking event; determining the actual emission amount of braking particulate matter corresponding to the braking event according to the braking wear; and feeding back the emission reduction effect of the current driving to the driver according to the predicted emission amount and the actual emission amount of the braking particulate matter. The application makes the braking particulate emission control strategy more suitable for real driving conditions, and realizes energy saving and environmental protection collaborative optimization.

The application discloses a clamping force estimation method of an electromechanical brake system and belongs to the technical field of vehicles. The method comprises the following steps: acquiring input signals, wherein the input signals comprise motor current sensor signals, motor rotation angle sensor signals and vibration acceleration sensor signals; performing feature extraction and determining a contact point according to the input signals; calculating a first clamping force based on an estimation model of dynamic stiffness; calculating a second clamping force based on an estimation model of torque balance; calculating a third clamping force based on an estimation model of current harmonic characteristics; and determining a final clamping force according to the first clamping force, the second clamping force and the third clamping force.

The application relates to a drive-by-wire chassis redundancy control method, a system and a vehicle. The method is applied to a drive-by-wire chassis redundancy control system of a vehicle, and the drive-by-wire chassis redundancy control system at least comprises a brake pedal module, a control module and two execution modules. The method comprises the following steps: obtaining a fault condition of at least one target wheel in a drive-by-wire brake system, generating a brake request through the brake pedal module based on the fault condition, and sending the brake request to the control module; the brake request comprises brake data; converting the brake data into brake demand data through the control module, mapping the brake demand data into target electrical parameters, generating an execution instruction based on the target electrical parameters, and sending the execution instruction to the execution module; and the execution module brakes the target wheel according to the execution instruction. Through the above method, a brake signal can be accurately generated for a wheel that has failed to control, safe redundancy guarantee is provided for the vehicle, and the safety of a tester or a driver is ensured.

Electromechanical brake actuator (4) for an electromechanical braking system (1), wherein the brake actuator (4) comprises: - a supply terminal (4a) configured to receive electrical energy from a power supply (6); and - a control terminal (4b) configured to receive electrical control signals when the brake actuator (4) is supplied via the supply terminal (4a) in order to actuate a brake; wherein the brake actuator (4) is configured to be operated by energy supplied to the control terminal (4b) when no or insufficient energy is supplied to the supply terminal (4a) and / or when a corresponding control signal is supplied to the brake actuator (4) enabling operation by energy supplied to the control terminal (4b).

The utility model discloses a kind of off-highway dump truck auxiliary braking systems, belong to off-highway dump truck braking technical field, including the hydraulic clamp disc type auxiliary brake of being installed in middle axle and rear axle transmission shaft, and the hydraulic control unit consisting of hydraulic power unit, auxiliary brake valve, energy accumulator and connecting pipeline;Hydraulic power unit connects steering hydraulic oil tank and auxiliary brake valve, and energy accumulator supplies high-pressure oil to auxiliary brake valve to auxiliary brake to release brake.The system is mainly used to improve off-highway dump truck parking brake safety and braking force, applicable to the vehicle of design load 90 tons below, provide redundancy brake guarantee for off-highway dump truck, realize quick response auxiliary brake when main brake fails.

The application discloses a brake footboard device and a vehicle, which comprises a mounting bottom plate, a brake valve, a brake footboard mechanism and an angle detection module. The valve top of the brake valve extends upward from the mounting bottom plate. The brake footboard module of the brake footboard mechanism is installed on the mounting bottom plate through a first overturning installation module. The pressing member is arranged on the lower side of the brake footboard module and faces the valve top. The brake footboard module overturns downward and drives the pressing member to press the valve top under the action of the foot pedal force. The brake footboard module overturns upward and returns to the initial posture under the condition that the foot pedal force is removed. The angle detection module is used for brake control of the transmission system of the vehicle according to the downward overturning angle of the brake footboard module. The pedal stroke and the brake force curve are close to the ideal linear relationship, the power transmission path is simple, the energy loss is small in the transmission process, the brake force is prevented from being greatly attenuated, the advantages of electric control and mechanical brake are combined, the brake force is quickly improved, and the brake distance is shortened.

The present invention relates to a brake system (100) comprising a primary brake actuator (1) and a secondary brake actuator (2), wherein the primary brake actuator (1) can set a target brake pressure (p_target) (603). [Solution] In the first monitoring phase, the secondary brake actuator (2) monitors the primary brake actuator (1) to see if a target brake pressure exists (604). If the target brake pressure is not present, the secondary brake actuator (2) hydraulically shuts off at least one hydraulic connection (22) between the primary brake actuator (1) and the secondary brake actuator (2) (605).

The utility model discloses an integrated type line control brake system and vehicle, include: the motor control module for realizing motor control, with the motor control module is connected for monitoring motor control module's control monitoring module, with control monitoring module is connected for monitoring control monitoring module's hardware monitoring module, integrated type line control brake system is used for through control monitoring module to the monitoring of motor control module to control monitoring module's monitoring of hardware monitoring module, improves the security level of system.

The present application relates to the field of new energy vehicle control, in particular to a new energy vehicle electronic hydraulic brake system failure processing system and method, real-time monitoring of the state signal and fault message of the electronic hydraulic brake system EHB; hierarchical response according to the monitored fault type; when it is determined that the electronic hydraulic brake system EHB has the highest level fault of losing basic braking capability, the first degradation strategy is triggered, when it is detected that the electronic hydraulic brake system EHB communication is completely lost but the highest level fault is not reported in advance, the second degradation strategy is triggered, solving the problem of how to ensure that the vehicle can still maintain the basic braking capability and safely limp when the electronic hydraulic brake system EHB of the new energy vehicle at the present stage has a serious fault leading to the failure of its hydraulic backup function, so as to avoid the complete paralysis of the vehicle and secondary safety accidents.

The application discloses a kind of transmission shaft drop-off automatic brake device and system in heavy truck parts technical field, including power assembly, power assembly end rotational speed sensor, transmission shaft, anti-grounding hanger, drive axle end rotational speed sensor, drive axle, central processing unit and solenoid valve;The anti-grounding hanger is installed on vehicle frame and located below transmission shaft;The application is by setting power assembly end rotational speed sensor in power assembly end, setting drive axle end rotational speed sensor in drive axle end, and by central processing unit to the rotational speed signal of two ends is handled, when detecting that transmission shaft operating state is abnormal, by solenoid valve control vehicle braking system brakes, simultaneously setting anti-grounding hanger located below transmission shaft on vehicle frame, to realize the monitoring of vehicle transmission shaft operating state, brake control and to the structure limit of transmission shaft position.

A brake assembly for a rail car includes at least one brake element for pressing against a rotor of a rail car wheel in case of a braking action; an actuator for driving the brake element, a linkage for transferring a braking force from the actuator to the brake element, at least one sensor device for measuring at least one parameter of the brake assembly, and the brake assembly further includes a trigger unit configured to enter its active state when a braking action occurs, wherein the trigger unit activates the sensor device in the active state.

This application discloses a release structure and device for train parking brakes, applicable to the field of rail transit technology. During normal train operation, the parking brake isolation valve is open, and the parking brake caliper unit is in a brake release state. When the parking brake isolation valve closes, the gas in the brake cylinder of the parking brake caliper unit is discharged into the atmosphere through the parking brake isolation valve, at which point the parking brake caliper unit is in a braking application state. When the parking brake isolation valve closes, the energization state of the solenoid valve changes to open its own pipe, at which point the solenoid valve opens, and the first bidirectional valve charges the brake cylinder of the parking brake caliper unit through the first air inlet, thus releasing the braking application state of the parking brake caliper unit. With the release structure proposed in this application, after the parking brake caliper unit automatically applies parking brake due to isolation, it is no longer necessary for the driver and passengers to get off the train for manual release, improving operational convenience.

An accumulator assembly is interposed hydraulically between a source of pressurized fluid and at least one wheel brake of a corresponding first or second pair of wheels. The accumulator assembly includes a medium pressure accumulator, a nonpowered MPA fill valve interposed fluidically between a pump-side passage of the medium pressure accumulator and the source of pressurized hydraulic fluid, a powered MPA one-way valve interposed fluidically between a brake-side passage of the medium pressure accumulator and the at least one corresponding wheel brake, and an MPA check valve interposed fluidically between the brake-side passage of the MPA cavity and the at least one corresponding wheel brake. An electronic control unit is provided for controlling at least one of the secondary brake module and the master cylinder responsive to at least one braking signal. The accumulator assembly facilitates a non-powered evac / fill phase of lifetime operation of the brake system.

This invention discloses a vehicle control method, a storage medium, and a computer program product. The method includes: acquiring a set of target wheel rim temperature values ​​for a target vehicle; determining temperature characteristic quantities based on the target wheel rim temperature value set; comparing the temperature characteristic quantities with a preset temperature threshold to obtain a comparison result; and generating vehicle control operations based on the comparison result. This invention solves the technical problem of low vehicle stability and safety caused by uneven braking force distribution between the tractor vehicle and the downstream load vehicle during braking.

The invention relates to a method (200) for monitoring a brake system (114) of a vehicle (100), wherein the method (200) comprises a step of reading in (201) a tire force acting on a tire of a wheel (102) and a current brake pressure in a brake system (106) for braking the wheel (102), a step of calculating (203) a braking effect parameter of the brake system (114) using the tire force and the brake pressure, and a step of outputting (205) a notification signal in response to the calculated braking effect parameter of the brake system (114).

The present invention relates to a rotational angle detection system (1, 1´, 1´´, 1´´´) for detecting a rotational angle of a rotary brake drive (10) for a rail vehicle, comprising: at least one sensor unit (20, 21) for detecting a rotational angle, which sensor unit can be operatively connected to the rotary brake drive (10); and at least one main electronics path for transmitting control signals and / or sensor signals, wherein the at least one main electronics path can be operatively connected to the at least one sensor unit (20, 21), the at least one main electronics path comprises at least one signal transmitter (51, 52, 53, 54) which subdivides the main electronics path into a main electronics path section which is close to the sensor unit (20, 21), viewed from the signal transmitter (51, 52, 53, 54), and a main electronics path section which is remote from the sensor unit (20, 21), viewed from the signal transmitter (51, 52, 53, 54), and the at least one signal transmitter (51, 52, 53, 54) is designed to electrically isolate the at least one sensor unit (20, 21) from the main electronics path section which is remote from the sensor unit (20, 21).

Provided are a braking temperature control method and system for an electromechanical brake. In the braking temperature control method for an electromechanical brake provided by the present disclosure, an intermediate temperature is obtained based on temperatures acquired by thermistors mounted on a stator winding, and a braking temperature control solution is generated based on a relationship between the intermediate temperature and a preset temperature, to control the heating of an electromechanical braking (EMB) driving motor. Therefore, under a conventional temperature control strategy, the operating environment of the EMB driving motor can be effectively improved, and the EMB efficiency is ensured. In addition, in a high-temperature abnormal operating state of the EMB driving motor, the operating temperature of the driving motor can be effectively controlled through a braking force redistribution strategy, thereby avoiding the braking failure caused by motor overheating.