Abstract: For ascertaining a future wheel brake pressure, pressure generator pressures of an external power brake pressure generator are continuously measured at measurement time intervals, the wheel brake pressure changes are ascertained therefrom, and the sum of the wheel brake pressure changes ascertained during a time period prior to the measurement is added to the last measured pressure generator pressure. The wheel brake pressure thus ascertained is considered to be the wheel brake pressure that will prevail after the time period following the measurement of the pressure generator pressure in a wheel brake.

Abstract: An integrated braking device for a vehicle equipped with wheel brakes includes a reservoir, master cylinder, bi-directional pumps each using hydraulic pressure oil from the reservoir for generating hydraulic pressure in first direction to apply braking force to the wheel brakes or generating hydraulic pressure in opposing second direction to control the hydraulic pressure oil from flowing to the reservoir, a hydraulic motor for driving the bi-directional pumps, inlet valves for controlling a hydraulic pressure from flowing from the bi-directional pumps to the wheel brakes, traction control valves each disposed between the master cylinder and each bi-directional pump to control flow of the hydraulic pressure oil inside the master cylinder, and a braking control unit for braking the vehicle by transmitting a driving signal to solenoid valves in the integrated braking device, the bi-directional pumps, and the hydraulic motor to control a flow of the hydraulic pressure.

Abstract: One embodiment of a braking system for vehicles may have a first brake group and a second brake group. The first and second brake groups may have respective braking devices and electro-hydraulic actuator devices operatively connected to the first braking device. The system may also have an interconnection branch between first and the second hydraulic actuation ducts, provided with a control valve. The system may also have at least one control unit that may be programmed to actuate the control valve to control the ducts and fluidly connect the ducts.

Abstract: The present disclosure discloses a digital hydraulic assisted braking system with a high dynamic response and a control method thereof. The system includes a two-position two-way digital switch valve A, a controller, an electromagnetic two-position two-way proportional reversing valve, a two-position two-way digital switch valve B, a displacement detection system, and a pressure detection system. When a vehicle starts, a control system of the present disclosure maintains a preload state and responds to a braking at any time. During an emergency braking, the braking system is open. When the vehicle is shut down, the braking system is closed. Compared with an existing braking method, by implementing the braking method of the present disclosure, a braking response time is greatly shortened, a dynamic performance of a braking response period is improved, and a safety of vehicle braking is further guaranteed.

Abstract: A system for brake inspection of vehicle for checking a brake performance of the vehicle in which brake fluid is injected in a vehicle factory includes a communication unit connecting the vehicle entered through the conveyor and the diagnostic communication, a specification determination unit that collects specification information of the vehicle and determines whether to apply an electronic stability control (ESC) device, a specification determination unit that collects specification information of the vehicle and determines whether to apply an electronic stability control (ESC) device, and an inspector consisting of a control unit that determines that the ESC pressure value measured by the forced driving of the ESC exceeds the set reference value, and determines that the brake pressure is normal (OK), and determines that the ESC pressure is abnormal (NG).

Abstract: A braking capacity decrease determining device including a brake ECU is applied to a vehicle including wheel speed sensors and a brake device. The brake ECU performs a first determination process of determining whether a temporary braking decrease determination condition is satisfied for each of a plurality of wheels provided on the vehicle. The brake ECU additionally performs a second determination process of determining whether there are both a wheel for which the temporary braking decrease determination condition is satisfied and a wheel for which the temporary braking decrease determination condition is not satisfied out of the plurality of wheels and determining that a braking capacity of the brake device has decreased when it is determined that there are both a wheel for which the temporary braking decrease determination condition is satisfied and a wheel for which the temporary braking decrease determination condition is not satisfied.

Abstract: This braking control device pumps a brake fluid from a reservoir to each wheel cylinder by one fluid pump and includes an electric motor which drives the fluid pump; and a controller which controls the electric motor. The controller calculates a target fluid pressure on the basis of at least one among the vehicle wheel speed, the vehicle deceleration state, and the turning state of the vehicle, calculates a target discharge amount for the fluid pump on the basis of the target fluid pressure, and controls the electric motor on the basis of the target discharge amount. The controller has a front wheel calculation map of the relationship between the fluid pressure and the inflow volume of the brake fluid corresponding to a front wheel cylinder, and a rear wheel calculation map corresponding to a rear wheel cylinder, and calculates the target discharge amount on the basis of the maps.

Abstract: A vehicle braking system includes a controller that receives signals from sensors associated with vehicle disc brakes, which allow detection of a parameter indicative of a degree of noise generated from each disc brake. When noise generation is detected, the controller activates a noise attenuation function of a first type if the vehicle is braking, and of a second type if the vehicle is not braking. The first type involves reducing actuating pressure of a fluid actuator associated with the disc brake for which noise generation is detected. The second type involves temporarily activating, while the vehicle is running and not braking, the fluid actuator associated with the disc brake which is generating noise. The controller also receives signals indicative of vehicle operating parameters which allow conditions to be defined in which priority is given to vehicle safety, and in which the noise attenuation function is excluded.

Abstract: A braking device includes: a reservoir; a master cylinder in which when the amount of operation performed on a brake pedal reaches or exceeds a predetermined amount, a port communicating between a pressure chamber and the reservoir is cut off and hydraulic pressure corresponding to the brake pedal operation amount is generated; a hydraulic pressure unit for adjusting the wheel cylinder hydraulic pressure; and a control unit for controlling the hydraulic pressure unit. The control unit determines, based on a temperature-related value related to the temperature of a friction member pressed by the wheel cylinder hydraulic pressure against a rotating member fixed to a wheel, whether the friction member is in a fade state. When the friction member is in a fade state, the control unit controls the hydraulic pressure unit to suction brake fluid from the reservoir through the port, and is fed to the wheel cylinder.

Abstract: A piston pump unit for a hydraulic vehicle power braking system including an electric motor, a planetary gear set, a worm gear, and a piston displaceable in a cylinder. As ventilation of an annular gap between the cylinder and the piston and a back side of the piston, the invention provides a radial hole and grooves in the cylinder.

Abstract: A brake control device including a pressure adjusting unit including an electric pump and an electromagnetic valve, and that adjusts, using the electromagnetic valve, a brake liquid discharged by the electric pump to an adjusted liquid pressure and introduces the adjusted liquid pressure to the wheel cylinders of the rear wheels; and a master unit that includes a master cylinder and a master piston, and that includes a master chamber connected to the wheel cylinders of the front wheels and a servo chamber to which the adjusted liquid pressure is introduced and which provides, to the master piston, an advancing force that opposes a retreating force applied to the master piston by the master chamber.

Abstract: An attachment for a tractor includes a rotary reducing component including a plurality of cutters; a hydraulic system having an activated state, a semi-activated state, and a deactivated state; an inlet, an outlet, a hydraulic motor positioned between the inlet and outlet and being mechanically coupled to the rotary reducing component; a first sensor positioned at the inlet for sensing parameters of the activated, semi-activated, or deactivated states; a hydraulic brake positioned downstream of the hydraulic motor configured to restrict flow from the motor to provide hydraulic motor braking only in the deactivated state; and a controller in communication with the first sensor and the hydraulic brake, wherein the controller triggers the hydraulic brake only when the controller determines the first sensor senses a parameter of the hydraulic system being in the deactivated state.

Abstract: The invention relates to a method for improving the control behavior of an electronic motor vehicle braking system which comprises at least a slip control function. Wheel dynamic information which is evaluated as a criterion for initiating a control intervention is used individually for each wheel and is compared with control thresholds for a pressure reduction phase, a pressure maintenance phase, and a pressure buildup phase for generating corresponding braking torques by means of a vehicle braking system.

Abstract: A motor control device includes a drive control device that controls turning on/off of a motor, and a voltage obtaining device that obtains a voltage across terminals of the motor. The drive control device determines whether or not the motor drive signal is OFF (ST01). If the determination is Yes, the drive control device determines whether or not the voltage across the terminals, which is obtained by the voltage obtaining device, has decreased and reached a target voltage (ST02). If the determination at ST02 is Yes, an ON time is set on the basis of the immediately preceding OFF time (ST03), and the motor drive signal is switched from OFF to ON (ST04). After the ON time elapses, the motor drive signal is switched from ON to OFF (ST05). Low-rotational-speed motor control can be performed while suppressing heat generation in a motor relay.

Abstract: This vehicle brake device comprises: a simultaneous driving determination section which determines whether it is necessary to simultaneously drive an upstream-side motor and a downstream-side motor; and a PWM control section which, when the determination result by the simultaneous driving determination section is in the affirmative, changes the duty ratio of the PWM signal to be output to the upstream-side motor so as to be smaller than when the determination result by the simultaneous driving determination section is in the negative, and uses PWM control to drive the upstream-side motor.

Abstract: In a method for controlling a hydraulic braking system, wherein the braking system includes a hydraulic pump that is driven by an electric motor so as to generate a volume of fluid flow for the hydraulic braking system. the electric motor is controlled in such a manner that fluid pulsation in the hydraulic braking system is counteracted by means of modulating a rotational speed of the electric motor. The modulation is generated by means of the control procedure. Furthermore, a device is designed and configured so as to perform the method.

Abstract: Methods and systems for determining fault for an accident involving a vehicle having one or more autonomous and/or semi-autonomous operation features are provided. According to certain aspects, performance data indicative of the performance of the features may be used to determine fault for a vehicle accident, such as a collision, by allocating fault for the accident between a vehicle operator, the autonomous operation features, or a third party. The allocation of fault may be used to determine an adjustment to an insurance policy and/or adjust coverage levels for an insurance policy. The allocation of fault may further be used to adjust risk levels or profiles associated with the autonomous or semi-autonomous operation features, which may be applied to other vehicles having the same or similar features.

Abstract: A brake installation for a motor vehicle. First and second pressure provision devices build up brake pressure in the wheel brakes. The first pressure device connected to a first wheel brake of a first brake circuit and to a second wheel brake of the first brake circuit. The second pressure device connected to a third wheel brake of a second brake circuit and to a fourth wheel brake of the second brake circuit. Each pressure device is respectively activated by an open-loop/closed-loop control unit. A first hydraulic line, with a normally open isolating valve, connects the first wheel brake line of the first brake circuit to the first wheel brake line of the second brake circuit. A second hydraulic line, with a normally open isolating valve, connects the second wheel brake line of the first brake circuit to the second wheel brake line of the second brake circuit.

Abstract: A method is provided to adjust an activating braking pressure threshold value of an automatic vehicle brake holding system of a vehicle. If a braking pressure that is generated through actuation of a vehicle brake of the vehicle exceeds an activating braking pressure threshold value while the vehicle is at a standstill, a brake holding state of the vehicle brake holding system is activated and a procedure for ascertaining time is started. A vehicle movement is ascertained during an activated brake holding state within a monitoring procedure period of time since starting the procedure to ascertain time. If a movement occurs within the monitoring procedure period of time, a value of a number of ascertained movements is increased. If this value exceeds a movement threshold value, the activating braking pressure threshold value is increased and the value of the number of ascertained movements is reduced.

Abstract: Systems and methods for reducing energy consumption within a braking system are provided. In one example, a method includes detecting an energy reduction condition associated with the braking system of the vehicle; energizing a primary circuit apply valve and a secondary circuit apply valve of the braking system in response to detecting the energy reduction condition; de-energizing a motor of a slave cylinder of the braking system in response to energizing the primary circuit apply valve and the secondary circuit apply valve; and de-energizing the primary circuit apply valve and the secondary circuit apply valve of the braking system in response to de-energizing the motor of the slave cylinder.

Abstract: An electronic brake system includes a master cylinder connected to a reservoir, the master cylinder including first and second master chambers and first and second pistons provided in the master chambers; a hydraulic pressure supply device activated by an electrical signal to generate a hydraulic pressure; a hydraulic pressure control unit configured to transfer, to a plurality of wheel cylinder provided in wheels, a hydraulic pressure discharged from the hydraulic pressure supply device; first and second backup flow paths configured to connect the first and second master chambers to the hydraulic pressure control unit; and first and second cut valves configured to selectively open and close the first and second backup flow paths, wherein one or both of the first backup flow path and the second backup flow path are connected to the first or second master chamber and any one of the plurality of wheel cylinders.

Abstract: A braking system for vehicles having at least one manual and/or automatic actuation device operatively connected to a processing and control unit to transmit thereto a request for a braking action by a user. The system may also have at least one first electro-hydraulic actuator device operatively connected to a first and second hydraulic supply circuit of a respective first and second braking device. The first electro-hydraulic actuator device may be actuated by the processing and control unit depending on the request for a braking action.

Abstract: A method of conducting a diagnostic procedure for a braking system includes analyzing via an electronic control unit whether only a first input device is engaged or only a second input device is engaged, conducting a first diagnostic test if only the first input device is engaged, and conducting a second diagnostic test if only the second input device is engaged.

Abstract: Braking control systems and methods, such as for an aircraft, use a dump valve to rapidly decrease hydraulic pressure applied to a brake actuator during a wheel skid condition. In response to the wheel speed recovering, the dump valve is commanded closed and the brake control system returns to normal braking. The dump valve and a servo-valve may work harmoniously for locked wheel brake control.

Abstract: A control device for a hydraulic brake system of a vehicle; as a reaction to a supplied warning signal as to a probable, early request for braking, the control device being configured to force at least one wheel exhaust valve of the hydraulic brake system into an open position in an undelayed or delayed manner and to activate a motor of a motorized hydraulic device of the hydraulic brake system; and as a reaction to a supplied brake setpoint signal as to requested braking with a current, setpoint deceleration not equal to zero, the control device being configured to force the at least one wheel exhaust valve into a closed position and to control the motor according to the setpoint deceleration currently requested. The present invention also relates to a hydraulic brake system for a vehicle and to a method for operating a hydraulic brake system of a vehicle.

Abstract: A braking system for vehicles having a processing and control unit operatively connected to a pilot pump and a motor for actuating at least one braking device. The processing and control unit being programmed so as to actuate the braking device via the motor as a function of the actuation of the pilot pump through a manual actuation device, in a “by-wire” operating condition.

Abstract: The braking device for a vehicle includes an operation judging portion which judges whether or not the operating amount in the increasing stage is equal to or more than a predetermined threshold amount or whether or not an increasing speed of the operating amount in the increasing stage is equal to or more than a predetermined threshold speed and a control portion which selects the first operating mode as the operating mode from a start of the increasing stage until a first timing or a second timing and selects the second operating mode as the operating mode in the increasing stage after the first timing or the second timing and at the same time maintains the drive hydraulic pressure in the increasing stage after the first timing or the second timing.

Abstract: Disclosed is an electronic brake system.

Abstract: An actuation system for at least one hydraulically actuatable device, e.g., a vehicle brake, may include an actuation device, e.g., a brake pedal, at least one first pressure source that can be actuated using the actuation device, and a second pressure source having a pressure-generating arrangement that is moveable in two directions, and which includes an electro-mechanical drive for the pressure-generating arrangement. Each pressure source is connected via at least one hydraulic line to the hydraulically actuatable device for supplying pressurizing medium. A valve device may regulate pressure of the hydraulically actuatable device. Pressurizing medium can be supplied in a controlled manner in both movement directions of the pressure-generating arrangement. Provision is made for two working chambers of the second pressure source to be connected by a hydraulic line, and a valve device may be arranged in the hydraulic line.

Abstract: This blow-by gas recirculation device for an internal combustion engine of a vehicle is provided with a vacuum pump which supplies negative pressure to a brake booster. The blow-by gas recirculation device includes: a fresh-air introduction passage for introducing a fresh air into a crankcase from an intake passage upstream of a throttle valve; a PCV device for recirculating, to the intake passage downstream of the throttle valve, blow-by gas in the crankcase; and a suction/recirculation means which uses the vacuum pump to suck the blow-by gas from inside the crankcase, in a region where the blow-by gas ventilation quantity by the PCV device is insufficient, and recirculate the blow-by gas to the intake passage, while the fresh air is being introduced from the fresh-air introduction passage. As a result, the blow-by gas concentration in the crankcase is reduced, engine oil contact opportunities are reduced, and oil deterioration is inhibited.

Abstract: A system comprises: pump (hydraulic pressure source) that uses brake fluid supplied from reservoir tank (reservoir) to generate hydraulic pressure in first hydraulic line, thereby generating hydraulic pressure in wheel cylinder; piston configured to move axially in cylinder under the action of hydraulic fluid supplied from master cylinder, piston dividing cylinder into at least two chambers (positive pressure chamber and backpressure chamber); stroke simulator for generating reaction force to a driver's brake operation by moving piston; second hydraulic line provided between positive pressure chamber in stroke simulator and master cylinder; and third hydraulic chamber provided between backpressure chamber and first hydraulic chamber to transmit brake fluid from backpressure chamber to first hydraulic chamber.

Abstract: A rear-road surface illumination apparatus is provided which includes: an avoidance determiner 30 to determine whether to provide a display to induce a following vehicle to avoid a vehicle, on the basis of vehicle information; and a controller 9 to cause an illumination light 10 to illuminate a rear road surface with light having illumination information that induces the following vehicle to avoid the vehicle when the avoidance determiner 30 determines to provide a display to induce the following vehicle to avoid the vehicle. Therefore, the rear-road surface illumination apparatus can indicate the existence of the vehicle to the following vehicle, to give the existence of the vehicle prominence, and can also make it easy to notify the driver of the following vehicle about what the driver of the vehicle desires the driver of the following vehicle to do.

Abstract: An electro-hydraulic motor vehicle brake system is provided, having a first cylinder-piston device, which can be fluidically coupled to at least one wheel brake of the brake system, for generating hydraulic pressure on the at least one wheel brake, wherein the first cylinder-piston device comprises at least one first piston. The brake system further has a second cylinder-piston device, which comprises at least one second piston, and an electromechanical actuator which acts on the second piston of the second cylinder-piston device. The second cylinder-piston device is or can be fluidically coupled at the output side to the first piston of the first cylinder-piston device in order to provide a hydraulic pressure, which is generated in the second cylinder-piston device upon actuation of the electromechanical actuator, for actuating the at least one first piston of the first cylinder-piston device.

Abstract: A power brake system having electronic slip regulation, and a method for controlling a power brake system having electronic slip regulation. A return line is equipped with a pressure medium storage unit for storing pressure medium with a pressure that is greater than an ambient atmospheric pressure, and is equipped with a blocking device that is controllable and that is situated between the pressure medium storage device and the reservoir. In addition, there is a pressure medium connection between the pressure medium storage unit and the plunger working space. A controlling of a power brake system takes place using the blocking device in such a way that the return line is blocked relative to the reservoir as soon as a plunger piston, driven by a drive unit, has traveled a definable path in the forward direction.

Abstract: A brake apparatus activates a stroke simulator OUT valve in a valve-closing direction to increase a pressure in a wheel cylinder with use of brake fluid flowing out of the stroke simulator according to a state of an operation performed by a driver on a brake pedal. Further, when the hydraulic pressure in the wheel cylinder or a first oil passage is brought into a predetermined state, the brake apparatus activates the stroke simulator OUT valve in a valve-opening direction to cause the brake fluid in the stroke simulator to flow out to a low-pressure portion while restricting the brake fluid in the stroke simulator to a predetermined flow amount.

Abstract: A method for ascertaining a pressure-volume characteristic of a vehicle braking system includes determining at least a first pressure-volume value pair of a first pressure occurring in the braking system during a pressure rise and of a first volume displaced in order to produce the first pressure, deriving a second pressure-volume value pair for a second pressure higher than the first pressure or for a second volume greater than the first volume in consideration at least of the first pressure-volume value pair and an indication in a predefined characteristic curve of a volume difference between a first volume associated with the first pressure and a second volume associated with the second pressure, or of a pressure difference between a first pressure associated with the first volume and a second pressure associated with the second volume.

Abstract: Power systems, heat exchanger systems, electrical regeneration systems and air drag reduction systems for a wheeled vehicle are provided. The systems comprise a vehicle that includes a compressed air system and electrical system. The power and drag reduction system also comprises a plurality of pneumatic motors, one each connected to each wheel, the pneumatic motors using compressed air to drive each wheel and a plurality of electric motors, two each connected to each wheel, the electric motors using electric power to drive each wheel. Based on operator action, the vehicle is propelled by one of compressed air system operation and electrical system operation. Motors associated with each of the compressed air system and electrical system are attached to and drive each wheel separately. The compressed air system and electrical system operate separately and recharge battery systems.

Abstract: An electric brake device that allows reduction of generation of an operating noise without impairing a function of a brake, is provided. The electric brake device includes a brake rotor, a brake pad, an electric motor (2), a linear motion mechanism, and a controller (9). Vehicle speed detector (44) configured to detect a vehicle speed, is provided, and the controller (9) includes: a motor angular velocity control section (40) configured to control an angular velocity of the electric motor (2); and angular-velocity-corresponding-to-vehicle-speed limiting section (41) configured to limit, in a no-load state where a clearance is between the brake pad and the brake rotor, the angular velocity by the motor angular velocity control section (40) such that the lower the vehicle speed detected by the vehicle speed detector (44) is, the lower the angular velocity of the electric motor (2) in the no-load state is.

Abstract: A mechanical converter assembly includes an input, a lever stack (multiple levers), and an output. The input is configured to receive a mechanical drive force (or mechanical input signal) from a driver resource. The lever stack translates the received drive force into a mechanical output force (or mechanical output signal). The output of the mechanical converter assembly is configured to apply the mechanical output force produced by the lever stack to a driven element. In one embodiment, use of the lever stack in the mechanical converter assembly provides translational gain in which an amount of translational movement at the input of the mechanical converter assembly results in a substantially greater amount of corresponding translational movement at the output.

Abstract: A method for conveying a metered hydraulic volume in a vehicle braking system by an electrically driven motor pump assembly, wherein a mechanical pump of the motor pump assembly is driven by an electric motor of the motor pump assembly. A rising motor voltage ramp is applied to the electric motor, a motor current being detected, and a conveying mode of the motor pump assembly starting as soon as a motor torque generated by the motor current exceeds a total of drag torque, breakaway torque and friction torque of the motor pump assembly. The motor current reduces when the conveying mode starts. The method is characterized in that, when a reduction in the motor current is detected after a specified time interval has elapsed, a motor voltage is reduced to a value which ends the conveying mode. The invention further relates to a vehicle braking system.

Abstract: Described are a method and a device for activating an electric vacuum pump for a brake booster of a vehicle. The brake booster is supplied with a vacuum from a vacuum reservoir. The vacuum pump is designed to increase the vacuum in the vacuum reservoir as soon as the vacuum drops below a predefinable switch-on threshold. In order to avoid unnecessarily frequent switching on of the vacuum pump, which may irritate the driver, an expected decrease of the vacuum in the vacuum reservoir as a result of an instantaneous braking operation is estimated and the switch-on threshold of the vacuum pump is temporarily reduced if the vacuum instantaneously prevailing in the vacuum reservoir minus the estimated vacuum decrease is greater than a predetermined adjustment point vacuum, below which the brake booster can no longer act in a sufficiently boosting manner.

Abstract: A vehicle-use brake apparatus has a control unit which includes a correcting pressure acquisition section that acquires a flow rate correcting pressure corresponding to a discharge amount of brake fluid discharged by a pump, a command differential pressure acquisition section that acquires a command differential pressure by performing a flow rate correction where the flow rate correcting pressure is subtracted from a target wheel cylinder pressure, and a correction restriction section that performs a correction restriction by which the flow rate correcting pressure is reduced or the flow rate correction is not performed if an actual wheel cylinder pressure is smaller than a target wheel cylinder pressure.

Abstract: A PCM (50) that is an engine control device functions to acquire a master vac negative pressure which is the negative pressure of a stabilized chamber of a master vac (126) which amplifies a brake pedal depressing force applied to a brake pedal (102), and also acquire a brake working fluid pressure that is a braking hydraulic pressure produced by a master cylinder (144) in accordance with the brake pedal depressing force amplified by the master vac (126), and in a case where both accelerator pedal (104) and a brake pedal (102) are depressed or actuated simultaneously, determine whether or not it is necessary to decrease engine output based on such master vac negative pressure and brake working fluid pressure to execute the output decreasing control for decreasing the engine output.

Abstract: A brake system for motor vehicles, which can be actuated in a “brake-by-wire” operating mode both by the vehicle driver and independently of the vehicle driver. In the “brake-by-wire” operating mode the system can be operated in at least one fallback operating mode, with a brake master cylinder, actuated by a brake pedal, having a housing and two pistons, which delimit two pressure chambers, are assigned to brake circuits with wheel brakes, a pressure medium reservoir, one electrically actuable inlet valve per wheel brake for setting wheel-individual brake pressures, a first electrically controllable pressure provision device for loading the wheel brakes with pressure, and a second electrically controllable pressure provision device with at least one vacuum connector and a pressure connector, the vacuum connector is connected to the pressure medium reservoir. The pressure connector is connected to at least one wheel brake without a valve being connected in between.

Abstract: To provide a brake control apparatus that brings a brake operating member to a proper position during antilock control. At least during operation of an antilock controller 105, valves 23 and 24 are actuated to impart a stroke to a piston 52P with hydraulic pressure generated by the pump 7.

Abstract: An electro-hydraulic brake system may include a brake input device manipulated by a driver to brake a vehicle, a brake input detecting sensor configured to detect a brake input value of the driver through the brake input device, a pressure generating device configured to generate a brake hydraulic pressure, a wheel cylinder configured to receive the brake hydraulic pressure generated from the pressure generating device and to generate braking power for braking rotations of each vehicle wheel, a hydraulic pressure supply line connected between the pressure generating device and the wheel cylinder to transfer the brake hydraulic pressure generated from the pressure generating device to each wheel cylinder, and a controller configured to output a control signal for controlling an operation of the pressure generating device to allow the pressure generating device to generate a target brake hydraulic pressure based on a signal of the brake input detecting sensor.

Abstract: In a method for operating a braking system of a vehicle by limiting brake pressure buildup during an activation of a brake actuating element, the rear wheel outlet valves of the rear wheel brake cylinders, which are respectively associated with a rear wheel of the vehicle, are controlled, at least temporarily, into an open state during the activation of the brake actuating element, and the front wheel inlet valves of the front wheel brake cylinders, which are respectively associated with a front wheel of the vehicle, are controlled, at least temporarily, into a closed state during the control of the rear wheel outlet valves into the open state.

Abstract: The invention provides a method of operating a brake system, including: transmitting a valve operating command to an inlet valve an outlet valve calculating a valve operating time of each of the inlet valve and the outlet valve based on a difference in pressure between both ends of each of the inlet valve and the outlet valve; performing the linear or On-Off control for increasing pressure and calculating the quantity of brake oil passing through the inlet valve and, the ON-OFF control for decreasing pressure and calculating the quantity of brake oil passing through the outlet valve; and calculating hydraulic pressure in the wheel brake cylinder based on the quantity of brake oil passing through the inlet valve and the quantity of brake oil passing through the outlet valve.

Abstract: A vehicle brake system comprises an electronic control unit (ECU) for controlling a vehicle brake arrangement, and an electric machine operating as a motor and a generator. The ECU controls valves and the electric machine so that, when a brake pedal is actuated, hydraulic fluid is supplied to a wheel brake from a master cylinder to generate a brake pressure. After a corresponding brake pressure is attained, the supply of hydraulic fluid is disabled, wherein the brake pressure effected by the hydraulic fluid is gradually dissipated, and, correspondingly, the electric machine is operated increasingly as a generator. Upon an increase of driver braking demand, hydraulic fluid is additionally supplied from the master cylinder to the wheel brake, and with decreasing vehicle speed, the electric machine is operated decreasingly as a generator, and, correspondingly, hydraulic fluid is supplied to the wheel brake from an intermediate accumulator and/or from the master cylinder.

Abstract: A hydraulic actuation unit for controlling the starting and stopping of hydraulic motors includes a first main circuit and a second main circuit, a first recirculation circuit and a second recirculation circuit, a counterbalancing valve, which includes a shuttle, and a first discharge channel and a second discharge channel. The shuttle includes a first check valve and a second check valve. The first check valve includes at least one first flow control element that can move from an open position to a closure position. The second check valve includes at least one second flow control element that can move from an open position to a closure position. The first and second check valves respectively are provided with first damping means and second damping means in order to slow down the passage movement respectively of the first flow control element and of the second flow control element.