92results about "Regenerative braking" patented technology

The present disclosure relates to a brake system and a method of controlling the same, the brake system including first and second wheel speed sensors respectively installed in wheels of a vehicle, electrohydraulic brakes respectively installed in front wheels of the vehicle, electromechanical brakes (EMBs) respectively installed in rear wheels of the vehicle, a first controller configured to perform braking control on the electrohydraulic brakes and the electromechanical brakes based on first wheel speed signals outputted from the first wheel speed sensors of the wheels, and a second controller configured to perform braking control on the electrohydraulic brakes and the electromechanical brakes based on second wheel speed signals outputted from the second wheel speed sensors of the wheels in response to a failure of the first controller.

A control device (80) is provided in a mobile body having a motor (31) and a battery (33) and capable of obtaining a braking force through regenerative drive of the motor and action of a brake device (41, 42, 43, 44). The control device includes an abnormality detection section (61) that detects abnormality of the brake device, and a motor control section (60) that controls the motor. When a regenerative torque generated by regenerative drive of the motor while the brake device is normal is set to a normal regenerative torque, the motor control section, when abnormality of the brake device is detected by the abnormality detection section, causes the motor to perform regenerative drive in a manner to generate an abnormal-time regenerative torque larger than the normal regenerative torque for a period from a time point at which the abnormality is detected to a lapse of a prescribed grace time regardless of a state of charge of the battery.

The invention relates to a braking device for a motor vehicle with two axles (A1, A2), wherein: - each wheel has a wheel brake (RB1, RB2, RB3, RB4; H-EMBi; EMBi), - a pressure supply (DV) with a rotary pump (ZRP) driven by an electric motor (M) is provided, - the pressure supply (DV) is part of a pressure supply device (DV1), wherein the pressure supply device (DV1) has at least two output lines (VLa1, VLa2) and at least two connections (VLb1, VLb2) for connection either to brake circuits (BK1, BK2), an ABS / ESP unit (ABS / ESP) and / or an actuating unit (BE), and - the pressure supply device (DV1) is configured to perform a controlled volume control for pressure build-up by means of the rotary pump (RP) by controlling an angular position of the electric motor (M).

Method for determining a coefficient of friction prevailing between wheels (4, 5, 6, 7) of a motor vehicle and a road surface, characterized in that During a journey of the motor vehicle, steering angles of equal magnitude in opposite directions are set for the wheels (6, 7) of a steerable rear axle (3). the change in rotational speed and / or change in the rotational speed gradient resulting from this steering angle setting at at least one of the rear wheels (6, 7) is determined, The coefficient of friction between the wheels (4, 5, 6, 7) of the motor vehicle and the road surface is determined depending on the or each determined change in rotational speed and / or change in the speed gradient.

The present invention relates to a hybrid electric powertrain for tracked vehicles that includes an electric motor that is operatively connected to a first ring gear in a first planetary gear set that drives the track; a combustible engine that is operatively connected to an axle that drives a first sun gear in the first planetary assembly; a clutch that engages and disengages a first output drive shaft powered by the engine to a second output shaft that rotates the axle; and a brake assembly that prevents the axle from causing the sun gear to rotate when the first ring gear is being rotated by the electric motor, thereby allowing the vehicle to operate in a fully electric mode. In one embodiment the brake assembly may include an axle clutch that disengages the first sun gear from the axle.

Method (300) for use in a trailer (120), operable to be part of a vehicle combination (100) together with a towing vehicle (110). The trailer (120) comprises an electric machine (140) configured to create a regenerative braking force and to store electrical energy in an electrical energy storage (150). The method (300) comprises detecting (301) a brake force requirement of the vehicle combination (100); estimating (302) regeneration capacity of the towing vehicle (110); obtaining (303) a parameter related to current driving conditions of the trailer (120); determining (304) a maximum allowed braking force of the trailer (120), based on the obtained (303) parameter; and applying (305) a regenerative braking force of the electric machine (140) while not exceeding the determined (304) maximum allowed braking force, wherein the magnitude of the applied regenerative braking force is based on the estimated (302) regeneration capacity of the towing vehicle (110).

The braking system for a vehicle comprises the following components: a pressure supply unit (DV1, DV2), an electronic control unit (DV ECU1, DV ECU2) and valve assembly (HCU), and two hydraulically actuated wheel brakes (EHB) for the front axle. An electromechanical wheel brake (EMB) or a hydraulically assisted electromechanical wheel brake (H-EMB) is provided for each wheel of the rear axle, along with an electric traction motor (TM1, TM2) and a central control unit (M-ECU). This unit is configured to control the braking system in such a way that, to generate a yaw moment or steering intervention, different braking torques are applied to the axles for brake force distribution and / or to the wheels of an axle using the wheel brakes (EHB, EMB, H-EMB) and / or the at least one traction motor (TM1, TM2).Alternatively, the braking system can be controlled in such a way that a combined use of the pressure supply device(s) (DV1), hydraulically assisted electromechanical brake(s) (H-EMB), electric parking brake(s) (EPB) and / or electromechanical brake(s) (EMB) and / or drive motor(s) (TM, TM1, TM2) occurs in normal operation for a faster increase in braking force.

A braking unit for a fuel cell electric vehicle or a battery electric vehicle having a propulsion drive shaft or a differential wheel is provided. A hydraulic motor or a rotary gear pump is connected with the propulsion drive shaft or the differential wheel. The hydraulic motor or the rotary gear pump is fluidly connected with a heat exchanger. A restriction valve is configured to control a flow of a fluid in and out of the hydraulic motor or the rotary gear pump. A hydraulic compressor motor is arranged between the hydraulic motor or the rotary gear pump and the restriction valve, the hydraulic compressor motor is operatively connected with an air compressor.

The braking system for a vehicle comprises the following components: a pressure supply unit (DV1, DV2), an electronic control unit (DV ECU1, DV ECU2) and valve assembly (HCU), and two hydraulically actuated wheel brakes (EHB) for the front axle. An electromechanical wheel brake (EMB) or a hydraulically assisted electromechanical wheel brake (H-EMB) is provided for each wheel of the rear axle, along with an electric traction motor (TM1, TM2) and a central control unit (M-ECU). This unit is configured to control the braking system in such a way that, to generate a yaw moment or steering intervention, different braking torques are applied to the axles for brake force distribution and / or to the wheels of an axle using the wheel brakes (EHB, EMB, H-EMB) and / or the at least one traction motor (TM1, TM2).Alternatively, the braking system can be controlled in such a way that a combined use of the pressure supply device(s) (DV1), hydraulically assisted electromechanical brake(s) (H-EMB), electric parking brake(s) (EPB) and / or electromechanical brake(s) (EMB) and / or drive motor(s) (TM, TM1, TM2) occurs in normal operation for a faster increase in braking force.

A control device and a method for controlling traveling speed of a vehicle for the purpose of maintaining a vehicle speed equal to or lower than a pre-set downhill speed. The method comprises simulating a vehicle speed profile for an upcoming road section if braking at a pre-identified power level would currently be requested, thereby obtaining a predicted maximum vehicle speed and a predicted time until a vehicle speed equal to or within a pre-selected interval of the pre-set downhill speed is reached. The method further comprises, if the predicted maximum vehicle speed is equal to or below the pre-set downhill speed and the predicted time is below a preselected threshold time limit, requesting braking at the pre-identified power level or at an adjusted power level.

A braking system, may include: a hydraulic braking apparatus including a first hydraulic braking apparatus provided on anyone of front and rear wheels of a vehicle and a second hydraulic braking apparatus provided on the other of the front and rear wheels of the vehicle; a non-hydraulic braking apparatus capable of generating braking force in a wheel provided with the second hydraulic braking apparatus among the front and rear wheels; a main braking force regulator configured for controlling hydraulic braking pressure supplied to the first hydraulic braking apparatus and the second hydraulic braking apparatus; and an auxiliary braking force regulator configured for controlling at least one braking apparatus of the first hydraulic braking apparatus and the non-hydraulic braking apparatus, based on whether an anti-lock braking system (ABS) is operating, when a failure has occurred in the main braking force regulator.

A regenerative braking control method and a regenerative braking control device of the present invention control a drive source that generates a regenerative brake force in such a manner that an upper limit of regenerative deceleration when a driver executes manual control becomes smaller than an upper limit of regenerative deceleration when automatic control is executed.

Relates to a brake device, in particular for an electrically driven motor vehicle. The motor vehicle has two axles. At least one axle has an electric traction motor that drives and brakes wheels on the axle. Energy is recovered by the traction motor during braking. Each wheel has a brake. A pressure supply device is provided, which has a pump driven by an electric motor in the form of a piston-cylinder unit or a rotary pump and, by means of the piston-cylinder unit, both builds up and reduces pressure, has at least one pressure supply outlet, and is part of the pressure supply device. The pressure supply device has at least two outlet lines and at least two connection points connected to the brake circuit, the ABS / ESP unit and / or the actuation device. Each connection point is disconnected from the pressure supply device through a switching valve. Each outlet line is hydraulically connected to a pressure supply outlet directly or through a connection line. The open-loop and closed-loop control devices control the components of the traction motor and the pressure supply device such that different braking torques are provided at the axle or at the wheel brakes of the axle.

Hydraulic assembly for a vehicle braking system (100) with at least two brake circuits (102, 104) and wheel brakes (106, 108, 110, 112) assigned to the brake circuits (102, 104), wherein the hydraulic assembly comprises the following: a pressure generator (116) for the driver-independent generation of a central hydraulic pressure for the brake circuits (102, 104) at least during a service braking initiated by a driver; and at least one pressure adjustment device (134) for brake circuit-specific adjustment of the central hydraulic pressure generated by the pressure generator (116) independently of the driver, characterized in that the components included by the hydraulic assembly are assembled to form the hydraulic assembly and the hydraulic assembly as a whole can be mounted in the vehicle.

A brake system according to an embodiment of the present invention may include: a first wheel speed sensor and a second wheel speed sensor provided on each wheel of a vehicle; electric hydraulic brakes which are respectively arranged on the front wheels of the vehicle; the electronic mechanical brakes are respectively arranged on the rear wheels of the vehicle; a first control unit that executes brake control for the electric hydraulic brake and the electromechanical brake on the basis of a first wheel speed signal output from a first wheel speed sensor of each of the wheels; and a second control unit that, in response to a failure of the first control unit, performs brake control for the electric hydraulic brake and the electromechanical brake on the basis of a second wheel speed signal output from a second wheel speed sensor of each of the wheels.

A method for operating a brake system of a vehicle, the brake system including at least one friction brake, the method including: obtaining condition data indicative of a condition of the at least one friction brake and providing a control instruction for controlling operation of the at least one friction brake based on the condition data, the control instruction configured to operate the at least one friction brake and a propulsion system of the vehicle such that the operation of the at least one friction brake is at least partially compensated by the operation of the propulsion system.

The proposed invention relates to methods for controlling energy consumption by a motor vehicle, and can be used in transportation industry. The technical problem to be solved by the claimed invention is to provide a method and a non-transitory computer-readable medium that do not possess the drawbacks of the prior art and thus make it possible to generate an accurate resource-efficient track for a motor vehicle that allows to reduce energy consumption by the motor vehicle moving along a highway, including as part of a convoy.

The braking system for a vehicle comprises the following components: a pressure supply unit (DV1, DV2), an electronic control unit (DV ECU1, DV ECU2) and valve assembly (HCU), and two hydraulically actuated wheel brakes (EHB) for the front axle. An electromechanical wheel brake (EMB) or a hydraulically assisted electromechanical wheel brake (H-EMB) is provided for each wheel of the rear axle, along with an electric traction motor (TM1, TM2) and a central control unit (M-ECU). This unit is configured to control the braking system in such a way that, to generate a yaw moment or steering intervention, different braking torques are applied to the axles for brake force distribution and / or to the wheels of an axle using the wheel brakes (EHB, EMB, H-EMB) and / or the at least one traction motor (TM1, TM2).Alternatively, the braking system can be controlled in such a way that a combined use of the pressure supply device(s) (DV1), hydraulically assisted electromechanical brake(s) (H-EMB), electric parking brake(s) (EPB) and / or electromechanical brake(s) (EMB) and / or drive motor(s) (TM, TM1, TM2) occurs in normal operation for a faster increase in braking force.

A brake device for a motor vehicle with two axles, including at least one axle with an electric traction motor for driving and braking at least one wheel arranged on the axle, where energy can be recovered by means of the traction motor during braking. Each wheel has a wheel brake. A pressure supply is provided in the form of a piston-cylinder unit, which can both build up pressure and reduce pressure. The pressure supply forms part of a pressure supply device, having at least two connections, switchably connected by respective valves, to the brake circuits, an ABS / ESP unit and / or an actuating unit. An open-loop and closed-loop control device controls the at least one electric traction motor and components of the pressure supply device such that a braking deceleration can be set by closed-loop control for each brake circuit and / or each axle, with different braking torques at the respective axles.

The present invention relates to a system for a tow vehicle-trailer combination, and a tow ball comprising such a system. The system comprising a sensor arrangement for measuring forces acting on a tow coupling and a computing device for processing data received from the sensor arrangement to determine at least one property of the tow vehicle-trailer combination and transmit at least one control signal to a trailer brake controller to control brakes of the trailer and / or transmit a message to a driver of a tow vehicle.

The present application provides a system for preventing instability of a vehicle caused by regenerative braking of rear wheels, which reduces the regenerative braking in advance to ensure stability of the vehicle according to braking conditions and update a regenerative braking map, which can include a first controller configured to distribute braking torque of front wheels and braking torque of rear wheels according to a basic regenerative braking distribution ratio on a regenerative braking map according to a deceleration level based on a required braking amount of a driver, and configured to reduce rear wheel regenerative braking torque of the rear wheels to a first reference value or less than the first reference value in an adjustment interval between a first deceleration and a second deceleration, and a second controller connected to the first controller and configured to further reduce the rear wheel regenerative braking torque to send it to the first controller if a wheel slip value is greater than a reference slip value according to vehicle travel information during braking of the vehicle.

A vehicle with a thermal battery (204, Figure 8) and an regenerative brake system 18 where the regenerative brake system is used to charge the thermal battery. In an alternative embodiment, a vehicle

The invention relates to a rail transit braking energy recycling method and device, and relates to the technical field of rail transit system energy conservation, and the method comprises the steps that a braking parameter set of a target rail transit vehicle is obtained; based on weather correction parameters, credibility verification is conducted on the braking parameter set of the target rail transit vehicle, braking parameter sets with the credibility smaller than a credibility threshold value are removed, and a credible braking parameter set is obtained; constructing an improved particle swarm optimization algorithm, and optimizing the braking energy recovery parameters of the target rail transit vehicle to obtain optimized energy recovery parameters; and the optimized energy recovery parameters are adopted, and rail transit braking energy is recycled. The method solves the problem that the traditional rail transit braking energy recovery scheme does not fully consider environmental factors, so that the reliability of the used data is insufficient, and the vehicle driving safety and the energy recovery efficiency are difficult to effectively balance.

A brake system (1) for braking a vehicle is disclosed. The brake system comprises a brake pedal control unit (4a1) configured to receive a brake pedal signal from a brake pedal sensor (21) and to respond with a primary deceleration intent signal onto a network, a brake actuator control unit (4b1) configured to activate a brake actuator (31) in response to a deceleration intent signal received from the network. The brake system (1) further comprises a central vehicle control unit (VCU) (6) that is configured to generate a secondary deceleration intent signal in response to the primary deceleration intent signal based on an overall state of the vehicle and a mode control unit (MCU) (8) to configure the brake system in an operational mode selected from at least a normal operational mode (N) and a degraded operational mode (D). The brake actuator control unit (4b1) is configured to activate the brake actuator (31) in response to a secondary deceleration intent signal in the normal operational mode and to activate the brake actuator (31) in response to the primary deceleration intent signal in the degraded operational mode (D) for applying degraded (emergency) braking to the vehicle.

A brake system for a vehicle may contain redundant components that permit braking force to be applied in case of partial or complete failure of a primary braking mechanism. The system may include at least one hydraulic brake circuit having at least one hydraulically operating wheel brake; a pressure supply device driven by an electric-motor drive; at least one electronic control and regulating device; a valve assembly having valves for setting wheel-specific brake pressures and / or for (dis)connecting the wheel brakes (from)to the pressure supply device; a piston-cylinder unit actuable by an actuating device, which can be connected to the at least one hydraulic brake circuit, to at least one brake unit comprising an electric drive motor, to an electric parking brake, to a hydraulically supported electromechanical brake, and / or to an electromechanical brake; at least one electric drive motor for at least one axle or wheel; and a central control unit.

An apparatus for controlling vehicle regenerative torque includes an information acquisition portion configured to obtain vehicle state information including a speed and a weight of a vehicle, and navigation information including weather condition information; a basic mode controller configured to enter a basic mode while the vehicle travels, to receive a variable maximum torque map determined based on information obtained by the information acquisition portion and to perform a basic mode control logic; and a safe mode controller configured to enter a safe mode when safe mode entry conditions are satisfied, and to receive a limited maximum allowable torque value determined based on information obtained by the information acquisition portion.

A vehicle control method includes: receiving a braking request signal from a driver; collecting vehicle braking execution information performed based on the braking request signal; deriving additional allowance information of rear wheel regenerative braking based on the braking request signal and the braking execution information; and controlling the vehicle based on the additional allowance information of the rear wheel regenerative braking. The braking execution information of the vehicle includes regenerative braking execution information and hydraulic braking execution information.

A braking control apparatus includes a first controller that brakes a vehicle depending on an output signal generated by a first pedal stroke sensor according to a stroke of a brake pedal, a second controller that brakes the vehicle depending on an output signal generated by a second pedal stroke sensor, a third controller that calculates a regenerative brake torque for regenerative braking of the vehicle and brakes the vehicle, and an electric parking brake (EPB) that generates a parking braking force of the vehicle. Any one of the first controller, the second controller, or the third controller controls the regenerative braking or the parking braking force to brake the vehicle, depending on whether at least one of the first controller or the second controller is in a normal state.

The braking system for a vehicle comprises the following components: a pressure supply unit (DV1, DV2), an electronic control unit (DV ECU1, DV ECU2) and valve assembly (HCU), and two hydraulically actuated wheel brakes (EHB) for the front axle. An electromechanical wheel brake (EMB) or a hydraulically assisted electromechanical wheel brake (H-EMB) is provided for each wheel of the rear axle, along with an electric traction motor (TM1, TM2) and a central control unit (M-ECU). This unit is configured to control the braking system in such a way that, to generate a yaw moment or steering intervention, different braking torques are applied to the axles for brake force distribution and / or to the wheels of an axle using the wheel brakes (EHB, EMB, H-EMB) and / or the at least one traction motor (TM1, TM2).Alternatively, the braking system can be controlled in such a way that a combined use of the pressure supply device(s) (DV1), hydraulically assisted electromechanical brake(s) (H-EMB), electric parking brake(s) (EPB) and / or electromechanical brake(s) (EMB) and / or drive motor(s) (TM, TM1, TM2) occurs in normal operation for a faster increase in braking force.

The invention provides a method and system for controlling braking of a vehicle. When the isolator is disconnected and the auxiliary drive wheel is separated from the drive system, the vehicle braking is performed by regenerative braking of the main drive wheel motor during braking. Subsequently, the isolator is connected according to the vehicle stability state, and then braking is performed simultaneously on the auxiliary drive wheel and the main drive wheel.