Abstract: A brake interface circuit for use with a hybrid drive system includes a brake interface circuit for selectively enabling and disabling the operation of a brake that is actuated by an actuator. The brake interface circuit includes a brake cylinder and an actuator control valve that is adapted to selectively enable and disable the operation of the brake by the actuator. First and second control valves are connected between the brake cylinder and the actuator control valve. The brake interface circuit is operable in a first operating mode to cause the actuator control valve to enable the operation of the brake by the actuator, a second operating mode to cause the actuator control valve to disable operation of the brake by the actuator, and a third operating mode to cause the actuator control valve to enable the operation of the brake by the actuator even though a portion of the brake interface circuit is operated in the second operating mode.

Abstract: A braking system for a vehicle having a hydraulic brake device for applying a friction brake force to at least one wheel of the vehicle includes a master cylinder and a mechanically controlled backup hydraulic cylinder. The master cylinder is in fluid communication with a reserve of brake fluid and in fluid communication with the hydraulic brake device. The master cylinder is operative to control the hydraulic brake device upon actuation. The mechanically controlled regulation backup cylinder is in fluid communication with the reserve of brake fluid and in fluid communication with the master cylinder. The backup hydraulic cylinder is mechanically controlled to move brake fluid therein and thereby actuate the master cylinder by delivering brake fluid to the master cylinder.

Abstract: A service portion of a rail control valve includes a body defining a piston passageway, an inshot valve passageway, and a service accelerated release valve passageway. An inshot valve is received by the inshot valve passageway of the body and a service accelerated release valve is received by the service accelerated release valve passageway.

Abstract: A braking system and method for a motor vehicle including a hybrid or electric traction system, including a decoupled brake pedal module, a hydraulic braking module, and an electric braking module used for recovery of electrical energy during braking carried out by the electric traction system, the decoupled braking module including a brake pedal and a mechanism controlling the hydraulic braking system and the electric braking module. The system measures at least one parameter associated with the pedal, and limits the recovery of electrical energy by the electric braking module.

Abstract: A braking system for hybrid vehicle may include a brake pedal, a pedal stroke sensor detecting stroke of the brake pedal and outputting corresponding signal, a brake control unit receiving the signal of the pedal stroke sensor, a driving wheel caliper braking a driving wheel according to control of the brake control unit, a regenerative braking unit including a motor/generator which generates electric energy according to control of the brake control unit in braking of the driving wheel, a master cylinder connected with the brake pedal and operated by the brake pedal, and a driven wheel caliper braking a driven wheel according to operation of the master cylinder.

Abstract: Disclosed herein is a pedal feeling adjusting device.

Abstract: An electronic control unit of a braking force control apparatus for a vehicle activates, as a first state, in-wheel motors in a regeneration state, thereby generating motor braking torques, and causes friction brake mechanisms to generate friction braking forces. Moreover, the unit activates, as a second state, the motors in a power running state, thereby generating motor driving torques, and causes the mechanisms to generate friction braking forces. Then, when the state is caused to transition between the first state and the second state, the unit changes magnitudes of the braking torques or the driving torques generated by the motors to one of increase and decrease, and changes magnitudes of the friction braking forces generated by the mechanisms to one of increase and decrease.

Abstract: A brake control device for a brake system of a rail vehicle, wherein the brake control device is designed to control at least one electromagnetic track brake device of the brake system on the basis of rail condition data. Also disclosed is a corresponding brake system, a rail vehicle, and a corresponding method.

Abstract: A brake system for a vehicle having a hydraulic brake system and a regenerative brake system and a method of controlling the same is provided. The brake system may include a brake pedal having a range of motion and configured to control the application of the hydraulic brake system based upon a position of the brake pedal within the range of motion. The brake system may further include a brake controller configured to determine an inflection position of the brake pedal, the inflection position being a position of the brake pedal within the range of motion when the hydraulic brake system begins to apply a brake pressure over a predetermined threshold, wherein the brake controller applies the regenerative brake system based upon inflection position.

Abstract: A variable control apparatus and method of the amount of regenerative braking of a vehicle using a paddle shift are provided. The method includes sensing, by a controller, positive (+) and negative (?) shifting in a manual mode based on a signal from a shift-operating unit during regenerative braking with a drive (D) gear engaged while the vehicle travels. A regenerative braking torque map that corresponds to a selected gear is selected based on the signal from the shift-operating unit. In addition, regenerative braking of a driving motor is adjusted based on the torque value calculated from the selected regenerative braking torque map.

Abstract: A master cylinder 5 includes: a first liquid chamber 51 generating a liquid pressure in response to a brake operation of a driver; and a second liquid chamber 52 communicated with a reservoir 4 and connected to a suction port 70 of a pump 7. In a state in which the reservoir 4 and a suction section 70 of the pump 7 are communicated via the second liquid chamber 52, a liquid pressure of the first liquid chamber 51 can create a wheel cylinder liquid pressure.

Abstract: A method of operating a vehicle having a friction braking system and a regenerative braking system is presented here. The method determines a regenerative torque capacity, calculates a desired regenerative torque amount for the braking system, detects that the desired regenerative torque amount exceeds the regenerative torque capacity by at least a threshold amount, and controls actuation of the friction braking system in response to the detecting. Another operating method determines a coastdown torque capability of the vehicle, calculates a desired coastdown torque amount, detects that the desired coastdown torque amount exceeds the coastdown torque capability by at least a threshold amount, and controls actuation of the friction braking system in response to the detecting.

Abstract: A vehicle and a method for controlling regenerative braking may utilize the maximum available regenerative braking torque for some time during a braking event. As the vehicle speed and/or powertrain torque decreases, the regenerative braking torque is controlled to deviate from the maximum. The point at which the regenerative braking torque deviates from the maximum is chosen based on the level of vehicle deceleration. The regenerative braking torque is then smoothly blended out until it reaches zero. The regenerative braking torque is brought to zero when the vehicle speed is very low, thereby eliminating the inefficiencies associated with operating a motor at a very low speed.

Abstract: Brake hydraulic pressure is appropriately prevented from becoming lower than a reference brake pressure for holding control. When a physical amount correlating with the rotational speed of an electric motor has become higher than or equal to a predetermined value, an HSA start reference pressure setting unit sets an HSA start reference pressure to a value higher than a reference brake pressure, and if the HSA start reference pressure at a time when a driver required fluid pressure has become lower than the HSA start reference pressure is higher than the reference brake pressure, an HSA required fluid pressure setting unit sets an HSA required fluid pressure at a time when the driver required fluid pressure has become lower than the HSA start reference pressure to a value higher than the reference brake pressure.

Abstract: Systems and methods are described for providing magnetic biasing of a carriage in context of linear guides. In one embodiment, a robotic mechanism is configured to travel on a platform assembly within a structural context. The platform assembly transports a carriage in a Z direction, and the carriage transports the robotic mechanism in an X direction. The carriage moves in the X direction along rails (e.g., and/or other types of linear guides) in a substantially floating or unbiased manner. For example, one or more alignment features on the carriage are in communication with the rails to allow the carriage to move relatively freely within an alignment region defined by the alignment features. When the carriage reaches its desired X location, magnetic features bias the carriage into a substantially accurate, secure, and repeatable position.

Abstract: A hybrid electric vehicle includes at least one wheel, a friction brake, a motor, and at least one controller. The friction brake is coupled to the wheel and configured to provide friction brake torque, and the motor is coupled to the wheel and configured to provide regenerative brake torque. The controller is configured to command the motor to provide a regenerative brake torque to satisfy a low frequency torque component or a high frequency torque component of a required antilock wheel brake torque during an antilock braking event.

Abstract: A method for controlling a motor vehicle equipped with wheels, brakes, a recovery device for recovering energy generated in braking, and a torque transmission chain from the wheels to the recovery device, includes acquiring a braking instruction, measuring a measured value of a dynamic characteristic of the recovery device, calculating a first intermediate setpoint with a preventive filter which filters the braking instruction so as to attenuate an amplitude of the braking instruction around a resonance frequency of the torque transmission chain, calculating a second intermediate setpoint to damp oscillations of the torque transmission chain, controlling the recovery device according to an electric motor control setpoint calculated as a function of the first and second intermediate setpoints, and controlling the brakes according to a braking setpoint calculated as a function of the braking instruction.

Abstract: A saddle-ride type vehicle includes a frame, an engine, a wheel support device, a wheel, upstream and downstream brake hoses, a brake device, a master cylinder, and a fluid pressure control device. The brake device is mounted to the wheel support device. The brake device is configured to brake the wheel by brake fluid being fed thereto from the downstream brake hose. The master cylinder is configured to feed the brake fluid to the upstream brake hose. The fluid pressure control device includes a brake hose connecting portion to which the upstream and downstream brake hoses are connected. The frame includes a head pipe, a main frame, a first down frame, and a second down frame. The fluid pressure control device is disposed either between the main frame and the first down frame, or between the main frame and the second down frame in the vehicle top view.

Abstract: A deceleration control method and system for an electric vehicle that performs deceleration by hydraulic pressure braking when a battery of the electric vehicle is in a fully charged state while coasting. The deceleration control method for an electric vehicle includes determining whether the electric vehicle is coasting, comparing a coasting speed with a predetermined creep speed when the electric vehicle is coasting, calculating an amount of regenerative power generation corresponding to the coasting speed when the coasting speed is higher than the predetermined creep speed, comparing the calculated regenerative power generation amount with a chargeable power amount of the battery, and generating predetermined hydraulic pressure braking torque when the calculated regenerative power generation amount is higher than the chargeable power amount of the battery.

Abstract: A pressure control valve arrangement is described for controlling the fluid pressure in an ABS brake system of a vehicle in such a way that, while there is a tendency of individual wheels of the vehicle to lock, the brake pressure in at least one associated brake cylinder can be adaptively adjusted, wherein at least one diaphragm valve is accommodated in a housing of the pressure control valve arrangement, said diaphragm valve having a diaphragm as the valve body, which diaphragm can be acted upon by introducing a pressure medium into a control chamber that is covered on the outside of the housing by a respective cover produced by primary shaping, such as injection molding, in such a way that the control chamber is formed between the diaphragm and the cover, and wherein blind holes, which extend in the cover substantially perpendicularly to the plane of the cover, are formed in the cover, the blind hole opening of at least one of said blind holes leading into the control chamber, and the blind hole opening of

Abstract: An electric vehicle includes a regenerative brake and a mechanical brake. The vehicle also includes a wheel bearing unit and a load sensor associated with the wheel bearing unit. The load sensor is configured to detect a load that acts between a road surface and a tire along a direction in which the vehicle travels. The vehicle also includes a load-responsive regenerative brake limiter configured to reduce a braking torque generated by the regenerative brake when an output of the load sensor reaches a preset value. A maximally actuator may be configured to calculate a maximum possible regenerative braking torque for the regenerative brake based on a rotational frequency of a wheel and a state of charge of a battery unit and to actuate the regenerative brake at a maximum torque within that commanded range.

Abstract: A vehicle brake device comprises a hydraulic brake device, a regeneration brake device and a brake control device. The brake control device further includes a final value calculating device for calculating the target braking force FR at the time when an ABS control period ended and the cooperative control device restarted the operation to be as a regeneration allowing braking force FH, when the anti-lock brake control device has operated for the ABS control period within one braking operation period where the brake operating member is continuously operated and a regeneration allowing device operable after the ABS control period ended within the one braking operation period and after the cooperative control device restarted the operation and allowing the generation of the regeneration braking force FE only when the target braking force is less than a value of the regeneration allowing braking force FH.

Abstract: A control device for a braking system equipped with an electric drive device and/or generator device includes: a first receiving device with the aid of which a specified value regarding a brake pressure in at least one wheel brake cylinder of at least one brake circuit is receivable, a second receiving device with the aid of which an actual value regarding a pressure in the at least one brake circuit and/or the brake pressure in the at least one wheel brake cylinder is/are receivable, and a control unit with the aid of which a setpoint mode of the electric drive device and/or generator device is specifiable taking the received specified value and the received actual value into account.

Abstract: Methods, systems, and vehicles are provided for calibrating a braking system of a vehicle. The braking system has an electric motor, a pump, and a hydraulic accumulator. A speed of the vehicle is obtained, and a pressure within the hydraulic accumulator is measured. The pump is operated via an electric motor to provide hydraulic pressure to the hydraulic accumulator based on the speed of the vehicle and the measure of pressure of the hydraulic accumulator.

Abstract: A vehicle control system includes an alcohol detector which detects an alcohol intake level of a driver of a vehicle; and a controller which determines whether the driver is a drunk person based on a detection result obtained from the alcohol detector, and which stops the vehicle when a determination result that the driver is the drunk person is obtained. After a door of the vehicle is switched from a closed state to an open state, and before an operation of a start-up of the vehicle is performed, the controller controls the alcohol detector so that a detection of the alcohol intake level is started, and allows a travelling of the vehicle before the detection result is output from the alcohol detector.

Abstract: A hydraulic system for a brake system of a machine includes a relay valve coupled to a brake cylinder, a pump, and a tank. The relay valve includes a first position to allow supply of fluid from the pump to the brake cylinder, and a second position to allow discharge of fluid from the brake cylinder to the tank. Further, the relay valve includes a third position to restrictively allow discharge of fluid from the brake cylinder to the tank via a flow limiting orifice. A pilot valve coupled to the relay valve and configured to modulate the relay valve between the first position, the second position and the third position.

Abstract: A hydraulic vehicle brake system, preferably a slip-controlled hydraulic vehicle brake system, includes two brake circuits to which wheel brakes of front wheels are attached. The brake system further includes an additional brake circuit, which is not attached to the main brake cylinder, but is provided with a hydraulic pump for power braking. Wheel brakes of vehicle wheels are attached to the additional brake circuit and are configured to be driven by an electric motor. The electric motor is operated as a generator during a braking operation to compensate for the braking moment generated in the additional brake circuit.

Abstract: A wiper motor 10 includes: an armature 20; an armature shaft 21; a core 20a composed of eighteen teeth portions; a commutator 23 having eighteen commutator bars 23a1 to 23a18; and a winding 20b composed of eighteen coil portions 20b1 to 20b18; an equalizer 27 composed of nine connecting conductors 27a1 to 27a9; a first brush 36, a second brush 35 shifted from a first brush 26 by 90 degrees, and a third brush 37 shifted from the first and second brushes by 90 or more degrees, each brush being arranged so as to come in sliding contact with the commutator bars, the first brush being connected to a common electric potential, a current for rotating the armature at low speed is selectively supplied to the second brush, and a current for rotating the armature at high speed is selectively supplied to the third brush.

Abstract: A controller controls a hydraulic control device to generate a target braking force corresponding to the stroke of a brake pedal by adjusting a controlled hydraulic braking force portion generated by the hydraulic control device on the basis of the relationship with a master hydraulic braking force portion generated from the brake hydraulic pressure in a master cylinder and a regenerative braking force portion generated by a regenerative brake device. The regenerative brake device maximizes the regenerative braking force portion before the stroke of the brake pedal reaches an idle stroke, and thereafter, the hydraulic control device 5 starts braking by the controlled hydraulic braking force portion. When the stroke of the brake pedal reaches the idle stroke, the master cylinder starts braking by the master hydraulic braking force portion.

Abstract: A braking apparatus according to an embodiment includes: a fluid pressure circuit that is provided between a master cylinder and a wheel cylinder, and that includes both a first system flow channel connecting a reservoir and at least one of the plurality of wheel cylinders, and a second system flow channel connecting at least one of the plurality of wheel cylinders and the master cylinder, and that forms a flow channel for supplying operating fluid to each of the wheel cylinders; and a pump provided in the first system flow channel and driven by the motor to increase the fluid pressure of the operating fluid to be supplied from the reservoir to the wheel cylinders.

Abstract: An electronic control device for controlling operations of an electric parking brake and a service brake: determines a release impossible state in which release operation cannot be performed, based on a fact that a motor current that is supplied to an electric motor of the electric parking brake during release control is maintained in a state of a locked rotor current; and performs, when the release impossible state is determined, back-up pressurization for pressing the piston by generating a brake fluid pressure in the wheel cylinder using the service brake and for pressing the friction-applying member against the friction-applied member.

Abstract: A method of controlling a vehicle having a transmission system, an engine system, and a braking system includes detecting a braking condition of the braking system. The braking condition is at least one of a brake temperature being above a predetermined brake temperature limit and a braking load being above a predetermined braking load limit. The method also includes detecting a second condition of at least one of the transmission system and the engine system. The method also includes determining whether the second condition satisfies predetermined criteria. Furthermore, the method includes detecting an absolute vehicle acceleration that is below a predetermined acceleration limit. Moreover, the method includes downshifting from a current gear to a lower gear to thereby cause engine braking when the braking condition is satisfied, the second condition satisfies the predetermined criteria, and the absolute vehicle acceleration is below the predetermined acceleration limit.

Abstract: A vehicle brake system and method for operating same, having a master brake cylinder, a brake medium reservoir, and a first brake circuit, connected via a reservoir line to the brake reservoir, having at least one first wheel brake cylinder, a first wheel inlet valve associated with the first brake cylinder, a first pump, by which a first brake medium volume is pumpable from the reservoir line through the open first wheel inlet valve into the first brake cylinder, a continuously adjustable first wheel outlet valve, by which a first brake medium displacement from the first cylinder into the brake reservoir is controllable, and a connecting line having a spring-loaded non-return valve, via which a delivery side of the first pump is connected to the brake reservoir, a brake medium displacement from the brake reservoir to the delivery side of the first pump being prevented by the spring-loaded non-return valve.

Abstract: A vehicle braking system includes a master cylinder having first and second outputs. First and second hydraulic braking circuits are provided between the respective master cylinder outputs and respective hydraulic wheel cylinders. A first pump provided in the first hydraulic braking circuit is operable to generate pressure and move hydraulic fluid within the first hydraulic braking circuit. A second pump provided in the second hydraulic braking circuit is operable to generate pressure and move hydraulic fluid within the second hydraulic braking circuit. A valving arrangement establishes fluid communication between the first pump and the second hydraulic braking circuit in a first configuration and prevents fluid communication between the first pump and the second hydraulic braking circuit in a second configuration.

Abstract: A vehicle brake system for braking a vehicle including a braking-mode switching mechanism configured to selectively effectuate, depending upon situations of the vehicle brake system, one of (A) a regulated-pressure-dependent braking mode in which is generated a regulated-pressure-dependent braking force having a magnitude that depends on a regulated pressure of a working fluid and (B) a braking mode depending on an operation force and the regulated pressure in which are generated both of an operation-force-dependent braking force having a magnitude that depends on the operation force by a driver and the regulated-pressure-dependent braking force.

Abstract: A brake control device mounted to a vehicle that comprises a pair of driving wheels and a pair of non-driving wheels controls an upstream brake pressure generated by a master cylinder and downstream brake pressures generated by brake actuators so that, during regenerative braking, the downstream brake pressures to brake devices corresponding to the driving wheels are reduced to be lower than the upstream brake pressure, and the downstream brake pressures to brake devices corresponding to the non-driving wheels are increased to be higher than the upstream brake pressure.

Abstract: A vehicle braking control device of the invention includes, when a direction in which a brake operating member is displaced to increase the hydraulic pressure in a master chamber is assumed to be an operating direction, a correlation value output unit that outputs a correlation value that correlates to an amount of decrease in operational reaction force acting on the brake operating member in a direction opposite to the operating direction during a braking operation, prior to start of the switching control; and a control unit that controls the regenerative braking device so that, as the amount of decrease in operational reaction force indicated by the correlation value being output from the correlation value output unit is large, the regenerative braking force at the start of the switching control decreases.

Abstract: In a vehicle brake device, when a brake pedal is depressed normally, high regeneration efficiency and high fuel efficiency can be achieved by positively utilizing the regenerative braking force, and early applying of basic hydraulic braking force can be achieved when the brake pedal is suddenly depressed. The vehicle brake device includes an operation force transmitting mechanism on a connecting member between the brake pedal and the master cylinder piston and having first and second rods and a spring member biasing the first and second rods in a direction separating both rods from each other. The operation force transmitting mechanism includes an inner space between both rods and a communication passage allowing communication of the inner space with the exterior. The communication passage restricts the outflow of fluid in the inner space upon an emergency brake pedal depression and allows the outflow thereof upon non-emergency brake pedal depression.

Abstract: A motor vehicle includes multiple wheels, each having at least one assigned hydraulically actuatable brake; first and second separate hydraulic braking circuits each including multiple valves for modulating a braking pressure in the two separate hydraulic braking circuits, the multiple valves forming a valve assembly; a first control device controlling the multiple valves; third and fourth separate hydraulic braking circuits and a second control device respectively of same construction as the first and second braking circuits and the first control device; a brake booster, operably connectable to the two separate hydraulic braking circuits and the two further separate hydraulic braking circuits; and a valve unit arranged downstream of the brake booster.

Abstract: A brake assembly includes a hydraulic auxiliary-power-operated first brake system including a master brake cylinder operably connected to an electromechanical brake booster and a hydraulic wheel brake for at least one wheel, the master brake cylinder configured to be activated by muscle force, and an externally powered second brake system including a hydraulic pressure source operated by external power and operably connected to a hydraulic wheel brake for at least one other wheel. The brake assembly further includes an electric drive motor configured for operation as a generator to brake the motor vehicle by acting on the at least one other wheel and a control unit configured to reduce a braking effect of the first brake system by reducing boosting of the electromechanical brake booster, if a braking effect of the electric drive motor in a generator mode is greater than the determined braking effect of the second brake system.

Abstract: A brake device includes an electric brake mechanism that applies electric braking force, a hydraulic brake mechanism that applies hydraulic braking force, an electric brake ECU that directs the electric brake mechanism to generate the electric braking force according to an operation amount of a brake pedal operated by a driver, a master cylinder in which a volume thereof changes according to the operation amount of the brake pedal, and that is able to deliver operating fluid to the hydraulic brake mechanism by a reduction in the volume, and a reservoir that stores the operating fluid. The master cylinder has a discharge port that discharges the operating fluid that is inside of the master cylinder to the reservoir.

Abstract: The vehicle braking device includes a hydraulic pressure generating device generating a primary hydraulic pressure corresponding to the braking operation by a driver, a motor cylinder device operating to cause the secondary hydraulic pressure generated by operation of the electric motor to track the target hydraulic pressure based on the control operation quantity, a brake pedal sensor detecting the braking operation quantity, a primary hydraulic pressure sensor, an ECU performing switching control in accordance with whether the braking operation quantity detected by the brake pedal sensor reaches a predetermined threshold value, between operating the motor cylinder device on the basis of the braking operation quantity and operating the motor cylinder device on the basis of a correlation value of the braking operation force detected by the motor cylinder device 16 or the correlation value and the braking operation quantity.

Abstract: In a vehicle brake device, a port is provided at a hydraulic chamber of a master cylinder and communicates with a reservoir tank. A piston movable in the hydraulic chamber for closing the port is provided with at least one piston-side port that faces on the port when at a first position. When a brake pedal is stepped on from a retracted state to move the piston from the first position to a second position spaced from the first position by a predetermined distance, the hydraulic chamber is blocked from the communication with the reservoir tank. The at least one piston-side port is provided therein with an orifice, so that the hydraulic pressure in the hydraulic chamber is raised at the time of a quick stepping of the brake pedal but is allowed to flow to the reservoir tank without being raised at the time of a non-quick stepping.

Abstract: An electric-hydraulic antilock braking system (ABS) installed in a trailer is coupled with a tow vehicle to facilitate controlled braking of the trailer. A trailer in-cab controller (TIC) monitors vehicle networks for diagnostic information used in determining appropriate braking actions to be taken. A communication network can interconnect the TIC, a trailer actuator controller (TAC), and an ABS controller. The ABS controller receives current tow vehicle speeds and current trailer wheel speeds, and dynamically adjusts the brakes based on the differences in the speeds. A three-way solenoid valve or an equivalent valve structure thereto allows for the ABS system to be quickly activated and deactivated.

Abstract: A brake system for a motor vehicle includes on at least one wheel, an electric-regenerative brake and a friction brake that can be hydraulically actuated by a first generator of brake pressure using a fluid, wherein the friction brake can be connected via an actuatable inlet valve to the first generator of brake pressure and via a first actuatable outlet valve to a pressure accumulator, so that a volume of fluid applied by the first generator of brake pressure can be diverted via the first outlet valve into the pressure accumulator. The first generator of brake pressure can be connected to the pressure accumulator via a further hydraulic connection having a second actuatable outlet valve. A method for operating a brake system is also disclosed.

Abstract: The object of the present invention is to provide a vehicle brake system capable of appropriately setting an upper limit value of hydraulic pressure of a by-wire brake during stopping of a vehicle in accordance with conditions. When the vehicle is stopped, a maximum allowable drive voltage calculation unit sets a maximum allowable drive voltage to V2, and sets a brake pressure generated by a motor to P2. When the vehicle is stopped, if a duration time of stopping of the vehicle or a duration time of generation of the brake pressure exceeds a reference value, the maximum allowable drive voltage calculation unit sets the maximum allowable drive voltage to V3, and sets the brake pressure generated by the motor to P3 which is lower than P2.

Abstract: In a brake-by-wire brake system which includes a motor actuated cylinder configured to produce a brake fluid pressure according to an operating stroke thereof and an electric motor for actuating the motor actuated cylinder, the control mode is normally based on a fluid pressure control, but is switched to a stroke control when the brake pedal is released for the purpose of quickly reducing the operating stroke of the motor actuated cylinder to an initial value. To avoid a sudden increase in the noises of the electric motor at the time of switching from the fluid pressure control to the stroke control, a limit circuit limits electric current supplied to the electric motor when the control mode is switched from the fluid pressure control to the stroke control.

Abstract: An electro-hydraulic brake-by-wire system includes a brake pedal, an electronic booster coupled to the brake pedal, a master cylinder coupled to the electronic booster, at least one front hydraulic brake disposed in fluid communication with the master cylinder, at least one electronic control unit connected to the brake pedal and at least one rear electronic brake connected to the at least one electronic control unit.

Abstract: A method to control a vehicle including control of regenerative brakes and friction brakes includes monitoring a desired corner force and moment distribution, monitoring real-time actuator constraints including a braking torque limit of each of the regenerative brake, determining a regenerative braking torque for each of the regenerative brakes based upon the desired corner force and moment distribution and the real-time actuator constraints, determining a friction braking torque for each of the friction brakes based upon the desired corner force and moment distribution and the determined regenerative braking torque for each of the regenerative brakes, and controlling the vehicle based upon the determined regenerative braking torques and the determined friction braking torques.

Abstract: A brake control apparatus for a vehicle provided with a regenerative braking system includes a hydraulic circuit where a first passage connects a master cylinder to a wheel cylinder. A second passage connects a discharge side of a pump to a first portion of the first passage. A third passage connects a suction side of the pump to a second portion of the first passage between the master cylinder and the first portion. A fourth passage connects the suction side of the pump to a third portion of the first passage between an inflow valve and the wheel cylinder. A reservoir is connected to the third passage and a portion of the fourth passage between an outflow valve and the suction side of the pump. A shut-off valve restricts brake fluid discharge through a discharge-side valve from the pump being driven.