127results about "Regenerative braking" patented technology

A system is operable for controlling a force applied on a trailer being towed by a vehicle is described to a desired force Fd. The trailer has brakes and an optional motor for providing a propelling force to the trailer. A force sensor senses fore-aft forces between the vehicle and trailer at all times while the trailer is being towed. A controller receives signals from the force sensor and is operatively connected to the trailer brakes and the motor. The system controls the force between a towing vehicle and a trailer to the desired force Fd, by any one of: (a) operating the brakes to apply a braking force to the trailer; (b) activating the motor to apply a propelling force to the trailer; and (c) operating the brakes and activating the motor to apply both a braking and a propelling force to the trailer.

The invention relates to a method for controlling a braking system in an emergency mode in the event of a malfunction, as well as to a braking system. The method comprises the steps of: transmitting (S1) a deceleration signal (6) to at least two actuator devices (3) of the braking system of a vehicle, wherein the at least two actuator devices (3) are each designed to build up a braking force for decelerating the vehicle; identifying (S2) a simultaneous malfunction in signal processing of the at least two actuator devices (3); and adapting (S3) an electronic signal transmission (5) between a central control unit (4) of the vehicle and at least one of the at least two actuator devices (3) such that the simultaneous malfunction is bypassed in order to build up the braking force.

The invention discloses a control method for stable operation of a heavy-load combined train. The method is applied to the heavy-load combined train formed by connecting at least two traction locomotives and at least one dragged vehicle in series, and comprises the following steps: when the ramp type of the heavy-load combined train running on the current line is a preset type, before or simultaneously adjusting the working state of an air braking device to be a relieving state, adjusting the working state of the air braking device to be the relieving state; controlling the power braking device of the master control locomotive to increase the power braking force, and increasing the power braking force by the power braking device of the slave control locomotive; when the working state is adjusted to be a relieving state, the initial relieving moment is determined, when the accumulative relieving duration reaches the preset first duration, the power braking force of the power braking device of the master control locomotive is adjusted and reduced, and the power braking force of the power braking device of the slave control locomotive is adjusted and reduced; changes of hook pulling force and hook pressing force of the middle slave control locomotive are reduced, the longitudinal force of the train is controlled within an evaluation index range, and the running safety and stability of the train are improved.

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.

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.

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 present invention relates to a method (M) for braking a vehicle, the method comprising: detecting (M1) a braking demand signal representative of a target deceleration of the vehicle; generating (M21) in the wheel brake cylinder (1) a hydraulic brake pressure based on the detected braking demand signal using a first pressure generator (10) fluidly connected to the wheel brake cylinder (1); detecting (M3) a fault condition of the first pressure generator (10); calculating (M4) an alternative braking demand signal upon detection of a fault condition of the first pressure generator (10), wherein the alternative braking demand signal is calculated based on a target deceleration that is established at a preset time point prior to detection of the fault condition; and generating (M5) an alternative brake pressure in the wheel brake cylinder (1) based on the calculated alternative braking demand signal using a brake pressure control device (120) having a second pressure generator (20) fluidly connected to the wheel brake cylinder. Furthermore, the present invention relates to a method (M) for braking a vehicle, in which an alternative braking request signal is calculated on the basis of a target deceleration, which is determined at a predetermined time before the detection of the fault condition, on the basis of a braking torque generated by an electric machine kinematically coupled to the wheels of the vehicle. Another aspect of the present invention relates to a braking system (100) for a vehicle.

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.

A vehicle energy management system, a vehicle including such a vehicle energy management system, and a method of controlling a vehicle energy management system. In particular, the present invention relates to a vehicle energy management system connectable to a vehicle. When the vehicle is operating in a vehicle braking mode and the temperature level of the heat receiving structure is below a maximum limit of a predetermined temperature range, the energy management system is configured to control a valve arrangement to deliver a pressurized air flow to the heat receiving structure.

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

A cooperative brake apparatus comprises: a regenerative brake device configured to apply a regenerative braking force to a vehicle a hydraulic brake device configured to apply a hydraulic braking force to at least one wheels using a hydraulic pressure formed by a motor including a first coil and a second coil and a control unit including a power supply device, a first driving circuit configured to transmit electrical energy of the power supply device to the first coil, a second driving circuit configured to transmit the electrical energy of the power supply device to the second coil, a first motor controller configured to control a current applied to the first driving circuit, and a second motor controller configured to adjust a current applied to the second driving circuit, wherein each of the first motor controller and the second motor controller controls the current applied to the first driving circuit and the second driving circuit, respectively, based on the regenerative braking force.