Abstract: A method is provided for operating a motor vehicle brake system that includes an actuatable brake master cylinder, a hydraulic brake booster, and at least one brake circuit that has at least one hydraulically actuatable wheel brake and at least one hydraulic-pressure generator driven by electric motor. The method includes monitoring a state of actuation of the brake master cylinder is monitored, and, upon detecting a maximum state of actuation, activating the hydraulic-pressure generator to increase the hydraulic pressure adjusted by the brake master cylinder in the brake circuit.

Abstract: A braking control device drives an electric motor based on a command pressing force corresponding to the required wheel braking force, and presses a friction member against a rotation member fixed to the wheel to generate a wheel braking force. The braking control device includes: a sensor for detecting wheel speed; a sensor for detecting the actual pressing force applied by the friction member; and a controller for calculating the target pressing force based on the command pressing force, and controlling the motor so that the target and actual pressing forces match. The controller calculates wheel slip state quantity based on the wheel speed, and executes, based on the slip state quantity, slip suppression control for reducing the degree of wheel slippage. Based on the actual pressing force at the start of the slip suppression control, the controller reduces the command pressing force and calculates the target pressing force.

Abstract: A braking system for vehicles having a master cylinder, and at least one braking device. The master cylinder has a first and a second output circuit, containing the same brake fluid. The first output circuit is intercepted by a first control valve fluidically connected to a braking simulator and to the at least one braking device so as to alternately connect the first output circuit to the braking simulator or to the at least one braking device for its actuation. The second output circuit is fluidically connected to the at least one braking device for its actuation, an automatic hydraulic actuation unit operatively connected to the master cylinder by a hydraulic actuation circuit containing an actuation fluid distinct from the brake fluid and fluidically separated from this. And, at least a processing and control unit of the system that supervises the operation of the braking systems.

Abstract: A drive circuit for an electric motor of the type which forms part of a pump in a hydraulic braking circuit of a vehicle comprises an input node, an output node and a voltage and current regulating circuit which connects the nodes and which varies the voltage and current supplied to the output node from the input node in response to a modulation strategy, the input node in use being connected to a battery supply of a vehicle and the output node connected to one side of the electric motor. The voltage and current regulating circuit comprises a switch mode power supply circuit capable of providing at the output node a voltage that is either above or below the battery supply voltage at the input node.

Abstract: Provided is a vehicle brake control device which is capable of suitably executing brake assistance processing, even if a sensor for detecting the pressure inside a variable-pressure chamber of a vacuum booster is not provided. A brake device is provided with: a vacuum booster for assisting an operation force inputted to a brake pedal; a master cylinder which generates MC pressure Pmc corresponding to the assisted operation force; wheel cylinders which are provided to wheels, and in which WC pressure is increased as the MC pressure Pmc is increased; and a brake actuator capable of adjusting the WC pressure. When it is determined that emergency braking is requested, a control device of the brake device sets, as the assistance limit pressure, the MC pressure Pmc at that point in time, and operates the brake actuator, to execute brake assistance processing for assisting WC pressure increase.

Abstract: Disclosed are processes and systems for preventing overpressurization of piping transporting fluid produced from a pressure source to a receiving facility in which the fluid passes through a high integrity pressure protection system (HIPPS). A relief device is provided in the piping in fluid communication with the HIPPS. In the event that fluid passing through the HIPPS during the valve closure time period has a property exceeding an activation property, the relief device is activated thereby allowing the fluid passing through the HIPPS during the valve closure time period to flow to a fluid containment volume. The fluid containment volume has sufficient volume such that upon the start of the closure of the valve in response to the pressure surge, a portion of the fluid passing through the HIPPS during the valve closure time period is absorbed by the fluid containment volume thereby lessening pressure increase in the piping.

Abstract: The invention relates to a technique for operating an electrohydraulic motor vehicle brake system comprising a master cylinder (or any other cylinder-piston arrangement) that can be supplied with a hydraulic fluid from a reservoir, an electromechanical actuator for actuating a piston accommodated in the master cylinder, a wheel brake that can be coupled to the master cylinder, and a stop valve provided between the master cylinder and the wheel brake. According to an aspect of this technique, the method comprises the steps of: controlling the electromechanical actuator to build up hydraulic pressure on the wheel brake; controlling the stop valve to hold the hydraulic pressure already built up on the wheel brake; controlling the electromechanical actuator to take in hydraulic fluid from the reservoir while monitoring a time response of a pressure drop in the master cylinder associated with the take-in; and interrupting the take-in depending on a result of the monitoring.

Abstract: Disclosed herein is an electrically controlled brake system.

Abstract: Electronic brake system is disclosed.

Abstract: A deformation suppressing structure of a vehicle includes a dash panel separating a driving unit space for installing a weight component and a vehicle interior space for a passenger to ride, a brake component disposed inside the driving unit space and between the weight component and the dash panel to control a hydraulic pressure of a brake system, and a protecting member fixed to the dash panel and accommodating the brake component. The protecting member includes a guide surface configured such that a contact point at which the guide surface contacts the weight component changes during a backward movement of the weight component at the time of a collision of the vehicle, and a contacting portion arranged to contact the dash panel at a location above a fixing point at which the protecting member and the dash panel are fixed to each other and above the contact point.

Abstract: A holding valve (61) is provided on an individual flow passage (51) connecting a main flow passage (52) and a wheel cylinder (42) to each other. The holding valve (61) permits communication between an upstream side and a downstream side in an open state to transmit the hydraulic pressure from an accumulator (32) to the wheel cylinder (42), and shuts off the communication between the upstream side and the downstream side in a closed state. Moreover, a pressure reducing valve (62) for realizing communication or shutoff between a reservoir (22) and a main flow passage (52) and between the reservoir (22) and the wheel cylinder (42) is provided on a pressure reducing individual flow passage (56) for connecting a reservoir flow passage (57) and the individual flow passage (51) to each other.

Abstract: A brake ECU brings master cut valves into an open state and brings holding valves into a closed state, thereby controlling a master cylinder and wheel cylinders to communicate to each other when a magnitude of a hydraulic pressure detected by an accumulator pressure sensor has decreased to a value less than a predetermined value set in advance. On the other hand, the ECU maintains holding valves in an open state, and controls an accumulator and the wheel cylinders to communicate to each other via linear control valves. Then, the ECU determines in which brake system a failure occurs out of a brake system for a front right wheel, a brake system for a front left wheel, and brake systems for rear right and left wheels based on changes in hydraulic pressure detected by a sensor, a master cylinder pressure sensor, and a control pressure sensor.

Abstract: In a method for actuating a hydraulic braking system, a hydraulic fluid is temporarily stored in a storage chamber when the antilocking system is activated and recirculated back into the brake circuit with the aid of a recirculation pump. The target pump speed of the recirculation pump depends on the degree of filling of the storage chamber with hydraulic fluid and in addition on the control frequency of the antilocking system.

Abstract: A hydraulic braking system has a brake actuator including hydraulic pumps that generate a W/C pressure by sucking and discharging a brake fluid from a master reservoir, and suck the brake fluid discharged from the W/C side for decompressing a W/C pressure during anti-lock braking. Further, open-when-self-priming valves that suck the brake fluid by themselves from the master reservoir in the hydraulic pumps are provided. Further, an accumulator is provided in a pipe connecting the hydraulic pumps and the W/C, and an accumulation to the accumulator is performed by the hydraulic pumps. Then, communication and cut-off of a pipe connected to the accumulator are controlled by lower limit indicating valves.

Abstract: The system includes a high-pressure accumulator connected to the primary chamber of the master cylinder and to the inlet of the ESP module by a solenoid valve. The connection between the primary chamber and the brake fluid reservoir is equipped with a solenoid valve. A control circuit controls the solenoid valve of the reservoir and the solenoid valve of the accumulator, depending on the braking method selected or imposed. The dynamic braking phase is broken down into two tasks, one with energy recovery that involves isolating the master cylinder from the wheel brakes until deceleration to a threshold speed, followed by another step until full stop that involves connecting the primary chamber alone to the high-pressure accumulator and to the ESP module to provide the latter with pressurized brake fluid from the accumulator and supply the wheel brakes for mechanical braking.

Abstract: Disclosed is an electronic control brake system for vehicles which suppresses residual frictional force generated due to contact between pads and a disc. The electronic control brake system for vehicles includes a master cylinder, wheel brakes, each of which includes a caliper device including a disc and advancing and retracting a pair of pads pressing the disc to exhibit braking force by brake hydraulic pressure transmitted from the master cylinder, plural NO and NC type solenoid valves, low pressure accumulators, pumps and a motor pressurizing a fluid stored in the low pressure accumulators to discharge the fluid to the wheel brakes or the master cylinder, and a section between the plural solenoid valves and the low pressure accumulator is are formed as a closed circuit section, and the pump is driven to move a part of the fluid in the closed circuit section to the outlet of the pump.

Abstract: An agricultural machine, such as a combine harvester, includes a chassis supported by a pair of front wheels and a pair of steerable rear wheels, a first drive mechanism for driving at least one of the front wheels to move the chassis at a designated forward speed, and a second drive mechanism configured to operate independently of the first drive mechanism and to drive at least one of the rear wheels. A controller is configured to actuate the second drive mechanism in response to a user command to drive the at least one rear wheel to apply forward pressure on the chassis regardless of the forward speed. The controller may actuate the second drive mechanism to apply a maximum forward torque to the at least one rear wheel to thereby apply the forward pressure to the chassis.

Abstract: Disclosed are electronic control brake systems for vehicles which suppress residual frictional force generated due to contact between pads and a disc.

Abstract: A vehicle brake apparatus in which a self-locked state of a cut-off valve is quickly relieved if the valve becomes stuck in the self-locked state. The vehicle brake apparatus comprises a master cylinder to have wheel cylinders generate a braking force, master cut-off valves of a normally open type, a slave cylinder electrically driven to apply a braking force to the wheel cylinders. The apparatus also includes pressure sensors for detecting brake fluid pressures generated by the master cylinder and the slave cylinder, and out-valves through which the brake fluid pressure on the wheel cylinders is reduced. If the brake fluid pressure corresponding to a depressing stroke of a brake pedal becomes higher than a valve openable pressure on the master cut-off valves while the brake pedal is being operated, the brake fluid pressure on the wheel cylinders is reduced through the out-valves.

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 system including: a liquid-pressure source device that can supply working fluid to a brake device; and an ABS valve device. The system executes a first control in which a supply pressure of the working fluid becomes a target supply pressure and a second control for making the supply pressure fall within the target range. In this system, when the valve device is not being operated, the first control is executed. When the valve device is being operated, the second control is normally operated, and when the supply pressure is higher than a threshold value, the first control is executed. Where completion of the operation of the valve device is estimated, the system performs at least one of reducing the threshold value, reducing an upper limit value of the target range, increasing an electric power supplied to a pressure-reduce linear valve during the first control when the valve device is being operated, and reducing the target supply pressure.

Abstract: A brake system including: (a) a manual hydraulic pressure source; (b) a power hydraulic pressure source; (c) a high pressure generator for generating high pressure, by utilizing pressure of the power hydraulic pressure source; (d) a common passage to which first and second brake cylinders and the high pressure generator are connected; (e) a high-pressure-generator cut-off valve disposed between the common passage and the high pressure generator; (f) a first manual-pressure-source passage connecting a first individual passage and the manual hydraulic pressure source; (g) a first manual-pressure-source cut-off valve provided in the first manual-pressure-source passage; (h) a first valve provided between the second brake cylinder and a connected portion of the first individual passage which is connected to the first manual-pressure-source passage; and (i) a pressure-supply control device for controlling supply of pressure to the brake cylinders, by controlling the high-pressure-generator cut-off valve, first val

Abstract: A hydraulic brake system includes: a hydraulic pressure source provided for a vehicle, and including a hydraulic-pressure generating device and a reservoir; a plurality of hydraulic brakes provided for respective wheels of the vehicle, and configured to restrain rotations of the respective wheels; and a control valve device including at least one hydraulic-pressure control valve group disposed between the hydraulic-pressure generating device and at least one of brake cylinders of the hydraulic brakes and/or between the reservoir and the at least one of the brake cylinders. Each of the at least one hydraulic-pressure control valve group includes (a) at least one ON/OFF control valve and (b) at least one linear control valve that are disposed in parallel with each other.

Abstract: A brake booster for use in a hydraulic braking system having a brake pedal, a master cylinder, and a hydraulic control unit includes a housing, a screw drive arrangement positioned at least partially in the housing, a motor coupled to the housing for actuating the screw drive arrangement, and a piston assembly positioned in the housing. The piston assembly and the housing together at least partially define a first fluid chamber having an opening for providing fluid communication with the master cylinder, and a second fluid chamber having an opening for providing fluid communication with the hydraulic control unit. The screw drive arrangement is movable relative to a piston of the piston assembly between an engaged position, in which the first fluid chamber is isolated from the second fluid chamber, and a disengaged position in which the first fluid chamber is not isolated from the second fluid chamber.

Abstract: In a brake control device and a brake control method, when a shift to a brake mode for backup involving separation of a supply path of working fluid is performed at the time of detection of an abnormality during braking, a differential pressure acting between an outlet opening and an inlet opening of an open-close valve which is provided between a hydraulic pressure source that is used during the backup brake mode and wheel cylinders and which needs to be opened during the backup brake mode is lessened prior to the separation of the supply path of working fluid so that the open-close valve is opened in accordance with a valve-opening command. Therefore, at the time of switch of the control mode, the confinement of wheel cylinder pressure is avoided.

Abstract: A vehicular braking apparatus including a shut-off valve for shutting off, as needed, a flow of oil from a wheel cylinder to a master cylinder; a pressure increase-decrease control valve increasing and decreasing a pressure in the wheel cylinder; a reservoir receiving and storing in a reservoir chamber the oil from the wheel cylinder when the pressure increase-decrease control valve is in a pressure decrease position; a pump sucking in and pressuring the oil from the reservoir chamber and supplying the oil to the wheel cylinder via the pressure increase-decrease control valve when the pressure increase-decrease control valve is in a pressure increase position; and a communication control valve controlling communication between the master cylinder and the reservoir chamber. The communication control valve is a normally-closed valve and is opened by a suction pressure of the pump.

Abstract: A brake system including: (i) hydraulic brakes provided for respective wheels of a vehicle, and configured to be activated by hydraulic pressures of respective brake cylinders so as to restrain rotations of the respective wheels; (ii) a power hydraulic pressure source including a drive source that is activatable by supply of electric energy, and configured to generate hydraulic pressure by activation of the drive source; and (iii) a common passage to which the power hydraulic pressure source and the brake cylinders of the hydraulic brakes are connected. The brake cylinders include a first brake cylinder connected to the common passage via a first individual passage that is provided with a normally-close electromagnetic valve as a first individual control valve. The brake cylinders include a second brake cylinder connected to the common passage via a second individual passage that is provided with a normally-open electromagnetic valve as a second individual control valve.

Abstract: A travel control device for a work vehicle includes: a hydraulic pump; a plurality of hydraulic motors connected to the hydraulic pump in parallel through a closed-circuit connection, that drive different wheels with pressure oil delivered from the hydraulic pump; a slip detection device that detects a slip occurring at each of the wheels; and a flow control device that reduces, upon detection of a slip occurring at any of the wheels by the slip detection device, a quantity of pressure oil supplied to a hydraulic motor for driving the wheel at which the slip has been detected, among the plurality of hydraulic motors.

Abstract: A VSA device (24), which controls vehicle behavior by individually controlling the pressure of brake fluid supplied from a slave cylinder (23) to a wheel cylinder (16, 17; 20, 23), is provided with: an accumulator (62) which can be connected to the wheel cylinder and the slave cylinder (23); an out-valve (60, 61) disposed on a fluid path between the wheel cylinder and the accumulator (62); a check valve (63) that allows only flow of brake fluid from the accumulator (62) to the slave cylinder (23); and a regulator valve (54) disposed on a fluid path between the wheel cylinder and a path between the check valve (63) and the slave cylinder (23). Brake fluid is discharged from the accumulator (62) to the slave cylinder (23) by reducing the driving force of an electric motor (32) of the slave cylinder (23), thereby rendering a special pump unnecessary and making it possible to reduce the weight, cost, and component count.

Abstract: A method for controlling an automated clutch, which comprises a hydraulic clutch actuating system having a hydrostatic actuator, the pressure of which is detected. The method includes using the pressure of the hydrostatic actuator to adapt the characteristic curve of the clutch.

Abstract: A device includes: actual-intake-pipe-pressure detection unit (11); estimated-intake-pipe-pressure detection unit (12) for calculating an estimated intake pipe pressure based on a rotation speed of the engine and an opening degree of a throttle valve; pressure difference calculation unit (13) for calculating a pressure difference between the actual and estimated intake pipe pressures; pressure difference integration unit (14) for integrating the pressure difference with respect to time; pumping brake detection unit (15) for determining that a pumping brake operation is performed when a integral value is equal to or more than a first determination value; and throttle valve control unit (16) for carrying out control for the pumping brake during the pumping brake operation based on a result of the determination by the pumping brake detection unit (15), and carrying out ordinary control otherwise.

Abstract: A reduction in size, weight and cost of a brake system of a motorcycle provided with a circulating-type ABS is achieved by a brake system provided with a circulating-type ABS and a by-wire-type brake system. In the brake system, solenoid valves, hydraulic pressure sensors, accumulators and pumps are integrated into a unit, and concurrently stroke simulators are attached to the unit as separate bodies.

Abstract: A braking system includes first pressure sensors 35, 35 which are provided to braking pipes 41, 41 which constitute first input-side pressure sensors for detecting a liquid pressure on a front-wheel-master-cylinder-25 side and a rear-wheel-master-cylinder-82 side, and second pressure sensors 36, 36 which are provided at positions closer to a stroke-simulator-28 side than second solenoid-operated valves 31, 31 of braking pipes 27,27 which constitute second input-side pressure sensors for detecting a liquid pressure on the stroke-simulator-28 side.

Abstract: During a non-control mode, a separation valve is closed, and thus separates a first supply path that supplies working fluid to at least one of wheel cylinders and a second supply path that supplies working fluid to at least one of the other wheel cylinders, from each other. An on-off valve provided on the first supply path is kept closed despite a valve opening command, due to the effect of the differential pressure between the outlet and inlet openings of the valve if the differential pressure is above a predetermined value while the valve is closed. When occurrence of a closure failure on the separation valve is assumed during braking, a brake ECU stops the control performed by a wheel cylinder pressure control system, and shifts to a backup non-control mode, and controls the discharge of working fluid from the first supply path-side wheel cylinders so that the on-off valve is opened in accordance with the valve opening command. Thus, the confinement of the wheel cylinder pressure is prevented.

Abstract: The invention relates to a hydraulic braking system having a device for controlling brake slip, drive slip, and/or the driving stability of a vehicle. Among other things, such devices use pumps, valves, and reservoirs to control brake pressure in the wheel brakes in accordance with wheel slip occurring at the particular wheels. These components are in contact with each via a hydraulic circuit. The hydraulic circuit is built into a hydraulic block that has spaces for installing the components and channels for hydraulic contact. The invention makes possible a particularly compact and reduced-weight design of the hydraulic block and at the same time low manufacturing costs. For this purpose an advantageous layout and sealing of channels relative to each other and to the surrounding area is provided.

Abstract: A hydraulic unit of an electronic control brake system capable of achieving compactness of a modulator block by optimizing connection between components and valves, which are mounted in the modulator block, is disclosed. The hydraulic unit of an electronic control brake system includes a modulator block mounted with components to control braking hydraulic pressure applied to wheels of an automobile, including a plurality of inflow and outflow valves, a traction control valve, a shuttle valve, an accumulator, a pump and a motor. The modulator block is formed with oil lines thereinside to connect the components. The modulator block has a hexahedral shape. A wheel cylinder connecting part is disposed at a first surface of the modulator block, and a master cylinder connecting part is disposed at a second surface of the modulator block. Accordingly, a width of the surface, at which the wheel cylinder connecting part is disposed, can be decreased.

Abstract: A brake control system includes a wheel cylinder, a brake pedal, a master cylinder in which communication between it and an external master cylinder reservoir is cut off when the operating amount of the brake pedal is equal to or greater than a predetermined value, an internal reservoir, and a pump which selectively discharges hydraulic fluid in two directions, one being a direction that increases the hydraulic pressure in the wheel cylinder by drawing up hydraulic fluid from the internal reservoir, and the other being a direction that stores hydraulic fluid in the internal reservoir. The pump is driven to discharge hydraulic fluid in the direction that stores hydraulic fluid when communication is open between the master cylinder and the master cylinder reservoir, and driven to discharge hydraulic fluid in the direction that increases the hydraulic pressure when communication is cut off between the master cylinder and the master cylinder reservoir. A further invention is directed to a brake control method.

Abstract: The present invention discloses a braking apparatus for a vehicle having a brake pedal. The braking apparatus includes a master cylinder having a reservoir for retaining a brake fluid. At least one hydraulically actuated brake is in fluid communication with the master cylinder and a control unit is in electrical communication with the hydraulically actuated brake. A replenishment system is in fluid communication with the master cylinder and in electrical communication with the control unit for feeding the brake fluid into the replenishment system during a first condition and feeding the brake fluid from the replenishment system into the hydraulically actuated brake during a second condition after initial depression of the brake pedal to provide consistent pedal feel and braking pressure.

Abstract: To configure brake fluid a pressure controlling unit to open a high pressure control valve to allow a high pressure generating unit that generates a brake fluid pressure higher than the brake fluid pressure according to brake pedal operation of a driver and a brake fluid pressure adjusting unit that adjust the brake fluid pressure to wheel cylinders to communicate with each other, when actual deceleration of a vehicle becomes lower than target deceleration by execution of anti-lock brake control during brake assist control.

Abstract: A hydraulic brake unit applies braking force to a plurality of wheels of a vehicle according to the operation of a brake pedal. A pressure increase linear control valve supplies hydraulic fluid from an accumulator to wheel cylinders of disc brake units of the respective wheels. Pressure-sustaining valves are placed in passages that extend from a first passage to the rear wheel cylinders. A pressure-increase response-delay reduction section closes the pressure-sustaining valves for a predetermined period of time after starting the hydraulic pressure control to temporarily limit the inflow of hydraulic fluid into the wheel cylinders that communicate with the first passage. Thus, the amount of the hydraulic fluid that is supplied to the second passage is increased, and it is possible to reduce the hydraulic pressure response delay in the second passage.

Abstract: An automotive hydraulic brake system is provided which exhibits an excellent pressure reduction performance to a low ? road while restraining an intake resistance of a fluid pump. For providing the hydraulic brake system, a gate-in valve is connected to an intake passage that connects a master cylinder to an intake side of the fluid pump. The gate-in valve selectively opens and closes the intake passage in accordance with a mutual relation between a master cylinder pressure and a pressure produced at an intake side of the fluid pump.

Abstract: The invention relates to an electronically regulatable vehicle brake system with traction control, in which a master cylinder is connected indirectly via a hydraulic unit to at least one wheel brake. The hydraulic unit has electromagnet valves and an externally triggerable pressure generator, for modulating the wheel brake pressure, optionally independently of the driver. For preventing wheel slip, the pressure generator is connected by its intake side to an intake conduit, among other things, that is controllable by an intake valve. To enhance the dynamics and improve the regulatability of a vehicle brake system, a self-aspirating pressure fluid storage unit is connected to the intake conduit and makes an aspiration volume available to the pressure generator.

Abstract: A hydraulic brake apparatus for use in a vehicle having wheels and a brake operating member manually operable by a driver, the apparatus including a manual pressure source including (a) a hydraulic booster which boosts an operating source applied by the driver to the brake operating member and produces a first hydraulic pressure corresponding to the boosted operating force, and (b) a master cylinder which produces a second hydraulic pressure corresponding to the boosted operating force as an output of the hydraulic booster; a power pressure source which produces, by utilizing a power, a third hydraulic pressure irrespective of whether the brake operating member is operated; hydraulic brakes which are provided in association with the wheels, respectively, and include respective brake cylinders, and each of which, upon supplying of a hydraulic pressure to a corresponding one of the brake cylinders, applies a hydraulic braking force to a corresponding one of the wheels; a hub portion which is connected to each o

Abstract: A motor vehicle brake system having a hydraulic cable, via which a wheel brake module can be pressurized by a brake medium using brake pressure from a brake cylinder and to which a low pressure accumulator is connected for temporarily receiving excess brake medium, wherein the low pressure accumulator is connected to the hydraulic cable via a backflow line and a return pump interposed in the return line in order to return temporarily stored brake medium, the return pump being cyclically actuated for adjusting the pump capacity such that an activation occurs within each braking cycle during a portion of pump cycles that corresponds to the pump capacity, is intended to provide particularly high operational safety while also providing a comfortable pedal sensation.

Abstract: A fill-up device of a master cylinder is included in a hydraulic brake system for an automotive vehicle and generates a hydraulic pressure corresponding to an operation of a brake operating member. A coupled switching valve is switched by being mechanically coupled with movement of a piston relative to a housing. The coupled switching valve is in a first state where a fill-up chamber is in communication with a reservoir via a relief valve until the piston is advanced by a predetermined distance from a rearmost position, and switched to a second state where the fill-up chamber is in direct communication with the reservoir via the communication passage without the relief valve disposed therebetween when the piston is advanced by a distance larger than the predetermined distance. Thus, the hydraulic pressure in the fill-up chamber rapidly decreases, and the hydraulic pressure in pressure chambers rapidly increase.

Abstract: Hydraulic brake system and method for controlling a hydraulic brake system for a land craft, in which a quantity of hydraulic fluid delivered to wheel brakes during pressure build-up phases in antilock braking mode is limited so that substantially no hydraulic fluid thereof can flow to a master cylinder.

Abstract: A brake control apparatus includes: at least one wheel cylinder that applies braking force to a vehicle wheel in response to supply of hydraulic fluid thereto; a manual hydraulic pressure source that pressurizes hydraulic fluid in accordance with brake operation by a driver; a cut valve which is arranged in a hydraulic fluid delivery path between the manual hydraulic pressure source and the wheel cylinder, and to which force is applied in such a direction that the cut valve is closed when the wheel cylinder is higher in hydraulic pressure than the manual hydraulic pressure source; and a controller that controls a discharge path, through which the hydraulic fluid is discharged from the wheel cylinder and which differs from the hydraulic fluid delivery path, so that discharge of the hydraulic fluid from the wheel cylinder through the discharge path starts in response to release of the brake.

Abstract: A vehicular brake hydraulic pressure control device includes accumulators that are connected to a first brake pedal and store brake fluid with a first master cylinder at atmosphere. A first brake system is operable to apply interlock control to a front wheel brake F of a second brake system. A switching unit switches a channel of brake fluid flowing to the first hydraulic pressure output channel of the first brake system, from the first master cylinder to the accumulators when a pump is in operation.

Abstract: A braking system for a motor vehicle includes a hydraulic circuit for producing a brake force, the hydraulic circuit having a pressure source for producing a hydraulic pressure and a pressure store, the pressure store of the hydraulic circuit being able to be supplied with hydraulic fluid from a delivery side of the pressure source if necessary. In this braking system, there is provision for the pressure store to be able to be coupled in fluidic terms to an intake side of the pressure source by means of an interposed actively controllable multi-way valve, in particular a two-way solenoid valve, and for the pressure store to be able to be decoupled therefrom.

Abstract: A hydraulic control system for a brake apparatus includes a combination valve and a motor connected to the combination valve. Output by the motor in a first direction places the combination valve in a first configuration, and output by the motor in a second direction opposite the first direction places the combination valve in a second configuration different from the first configuration. In the first configuration, the control valve allows hydraulic fluid to flow along a first fluid path. In the second configuration, the control valve allows hydraulic fluid to flow along a second fluid path different from the first fluid path.