Abstract: A vehicle braking unit comprises an operating braking pressure inlet which receives an inlet braking pressure built up by a braking cylinder, and at least one operating brake pressure outlet at which an outlet braking pressure is provided for an operating brake modulator, which is upstream of the operating brake and provides anti-lock functionality. At least one connecting channel hydraulically connects the operating brake pressure inlet to the outlet. Brake fluid is supplied from a storage unit through the brake cylinder, the connecting channel and the operating brake modulator. The braking unit has a brake fluid inlet, through which the brake fluid is received from the storage unit, a brake fluid pump, by which the brake fluid is suctioned through the brake fluid inlet and a supply pressure is built up, and a valve unit that controls the outlet braking pressure and/or a parking brake release pressure by the supply pressure.

Abstract: A hydraulic vehicle brake system including a brake line for conducting a hydraulic pressure medium and a master cylinder attached to a non-pressurized storage vessel. A wheel brake has a first pressure modulation valve on the inlet side and a second pressure modulation valve and a low-pressure accumulator on the outlet side of the wheel brake. A pump is disposed on a return line downstream of the low-pressure accumulator for removing pressurizing medium from the low-pressure accumulator to regulate the brake pressure via the first pressure modulation valve and also via an isolation valve disposed in the brake line upstream of the first pressure modulation valve. An electromagnetically opening changeover valve is inserted in a pump suction line discharging into the return line between the master cylinder and the low-pressure accumulator. The pressure provided by the master cylinder can be fed to the low-pressure accumulator, bypassing the wheel brake.

Abstract: A brake system for a vehicle includes a main brake cylinder which has a first chamber which is hydraulically connected to at least one wheel brake cylinder for braking a wheel of the vehicle; an activating device for the driver to mechanically act on a piston of the main brake cylinder in order to pressurize hydraulic fluid in the first chamber of the main brake cylinder; and a pressure generating device which is hydraulically connected to the first chamber of the main brake cylinder, and which for activating the wheel brake cylinder supplies the wheel brake cylinder with hydraulic fluid through the first chamber of the main brake cylinder.

Abstract: A brake system for a motor vehicle which simplifies the hydraulic design and avoids a vacuum prevailing over a relatively long period of time. The first hydraulic unit has a suction volume, which is connected to the suction side of the pump and which, in the event of a change in the pressure on the suction side of the pump, provides a pressure and volume equalization by means of the brake fluid stored in the suction volume, with an elastic element.

Abstract: A vehicle braking force control device which, at a normal time, performs antilock brake control when the slip ratio of a wheel has become equal to or greater than a predetermined threshold. The control device acquires from the engine control unit an accelerator pedal position signal corresponding to an accelerator pedal position, a clutch connection signal corresponding to a state of connection of a clutch, and a power transmission signal corresponding to a state of power transmission of a transmission. When engine braking is large on the basis of the accelerator pedal position signal, the clutch connection signal, and the power transmission signal, the vehicle braking force control device changes the predetermined threshold value to an offset threshold value that makes it harder to perform the antilock brake control than at the normal time.

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: A slip-controlled hydraulic vehicle brake system includes a first hydraulic pump configured to draw brake fluid out of wheel brakes or out of a hydraulic accumulator connected to the wheel brakes. The brake system also includes two further hydraulic pumps configured to be connected to a brake master cylinder for a rapid pressure buildup. To pump against a high brake pressure while the vehicle brake system is actuated, only the first hydraulic pump is used, while the other two hydraulic pumps are separated from the brake master cylinder and run “at idle” at the same time. The necessary mechanical driving power of the hydraulic pumps is thereby reduced, and a very rapid pressure buildup is nevertheless possible.

Abstract: A brake fluid pressure control device 10 includes: a block-shaped housing 30, front and rear wheel-use flow paths, mounting holes in each side surface of the housing 30; a pair of front wheel-use switching valve bodies 1a and 2a that are mounted in a pair of mounting holes 31a and 31b that control the pressure of a brake fluid supplied to a front wheel-use wheel cylinder 103; a pair of rear wheel-use switching valve bodies 3a and 4a that are mounted in a pair of mounting holes 31c and 31d that control the pressure of the brake fluid supplied to a rear wheel-use wheel cylinder 106; a pressure sensor 13 that is inserted inside a mounting hole 31j in the first side surface 30a of the housing 30; and an electronic control unit 8 that drives and controls the front wheel-use and rear wheel-use switching valve bodies 1a to 4a.

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: An anti-skid braking system for an aircraft having a brake pedal in communication with a master cylinder and fluid reservoir, and a brake caliber engaged with a wheel. The system includes a three way hydraulic valve controlled by a solenoid wherein the hydraulic valve is in fluid communication with and between the master cylinder and fluid reservoir and the brake caliper. A double acting spring loaded accumulator has an accumulator piston wherein the accumulator is in fluid communication with and between the three way hydraulic valve and the brake caliper. A hydraulic pump is in fluid communication with and between the three way hydraulic valve and the brake caliper.

Abstract: A vehicle brake system includes a pump, a sump, brake units and left and right manually operated brake valves. The brake system also includes, for each brake unit, a solenoid operated on-off valve having a first port connected to a pilot of one of the brake valves, a second port, a third port connected to one of the brake units, a solenoid and a spring which opposes the solenoid. The brake system also includes, for each brake unit, a solenoid operated proportional valve. Each proportional valve controls communication between the pump, the sump and the second port of a corresponding one of the on-off valves.

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 device and method for a hydraulic brake system of a land vehicle in order to block a brake circuit of the brake system with regard to a supply of brake pressure generated by a driver, to establish a hydraulic connection between the output side of a wheel brake and the input side of a controllable pump and to generate a predetermined brake pressure at the input side of the wheel brake by the use of a pump.

Abstract: In a braking device for a motor vehicle having a first group and a second group of brake circuits, each brake circuit being associated with one group of wheels, and at least the first group of brake circuit being implemented as hydraulic brake circuits, at least one group of wheels being connected to at least one operating unit, which may cause a deceleration of the wheels, the task of a comfortable connection of recuperation brake applications to conventional brake applications is achieved in that a control unit controls the brake application of the brake circuit or circuits of the second group and optionally the deceleration effect of the operating unit or assemblies, the first group of brake circuits being activatable directly by the driver using a brake operating unit.

Abstract: A hydraulic brake system equipped for anti-slip control and for active brake interventions has a self-priming pump. A pressure retention valve prevents the brake system's low-pressure accumulator and the wheel brakes from being evacuated below atmospheric pressure during a sensitive brake operation. A two-position valve deactivates the bias of the pressure retention valve by opening a fluid path from the low-pressure accumulator to the pump when it is desired that the wheel brakes be retracted farther to reduce drag and excessive wear of the brake friction elements.

Abstract: Provided are a braking control system for a vehicle which is controlled in a priority order, and a method of the same. A braking control system for a vehicle equipped with an electronic brake at each wheel includes a first control unit controlling the operation of a first electronic brake mounted at a front-left wheel and a second electronic brake mounted at a front-right wheel in response to braking signals, and a second control unit controlling the operation of a third electronic brake mounted at a rear-left wheel and a fourth electronic brake mounted at a rear-right wheel in response to the braking signals. In this configuration, when a fail occurs in any one of the first and second control units, the other control unit selectively controls at least one or more of the first to fourth electronic brakes, in accordance with predetermined logic.

Abstract: A valve assembly, which houses a valve closing member that co-operates with an armature to connect or separate pressure medium channels in a valve housing, the member being directed towards a valve seat which is situated on a valve seat body fixed in the valve housing. The valve assembly includes a solenoid for actuating the armature which is pushed onto a non-magnetisable sleeve section of the valve housing and a magnetic core that is diametrically opposed to the armature in the valve housing. Various valve functions can be achieved by using identical valve components in a modular manner.

Abstract: To achieve a specifiable, and thus reproducible final pressure in at least one part of the brake circuit, the pump is first actuated for pressure buildup or pressure reduction when the valve is closed. When a first specified setpoint pressure is reached, or when a pressure threshold value is exceeded, the valve is put into an open position using a first actuation. After the pump is switched off, the actuation of the valve is modified in such a way that, during a specifiable time, a continuous change of the first actuation is undertaken all the way up to a second actuation, in which the valve assumes a holding position, particularly while taking into consideration the pressure difference which prevails at the valve.

Abstract: The invention relates to a brake system for a vehicle, with a main brake cylinder, a fluid control unit, and at least one wheel brake. The fluid control unit has, for brake pressure modulation in at least one brake circuit a switchover valve, an intake valve and a recirculating pump for each brake circuit. According to the invention, the fluid control unit has, for each brake circuit, a sliding valve which is connected into a suction line between the recirculating pump and the main brake cylinder. The sliding valve restricts the effective pressure on a suction side of the recirculating pump to a predeterminable maximum pressure value. In this case, the sliding valve can be arranged in series with or parallel to the intake valve.

Abstract: In a brake control system (10), a reservoir switch (60) detects a decrease in the amount of hydraulic fluid in a reservoir tank (26). An ECU (100) switches a master cutoff valve (22), a pressure increase valve (40), and a pressure decrease valve (42) and the like between open and closed. When a decrease in the amount of hydraulic fluid in the reservoir tank (26) is detected, the ECU (100) opens the master cutoff valve (22) to supply hydraulic fluid from a right front-wheel wheel cylinder (20FR) and a left front-wheel wheel cylinder (20FL) to a master cylinder (14), when release of a brake pedal (12) is detected.

Abstract: A brake fluid pressure control device has a base unit. The base unit includes an inlet valve mounting hole, an outlet valve mounting hole, a reservoir hole, a cylinder hole, an inflow hole, a suction hole, and a discharge hole. A plunger is inserted into the cylinder hole. The inflow hole connects the outlet valve mounting hole and the reservoir hole. The suction hole connects the reservoir hole and the cylinder hole. The discharge hole connects the cylinder hole and the inlet valve mounting hole. The suction hole is inserted with a suction valve that allows only an inflow of the brake fluid into the cylinder hole. The discharge hole is inserted with a discharge valve that allows only a discharge of the brake fluid from the cylinder hole. The inflow hole and the suction hole are arranged to be substantially in parallel with each other.

Abstract: A brake control apparatus is equipped with a plurality of fluid pressure adjusting valves that have opening degrees thereof adjusted through energization control to adjust the fluid pressures, a plurality of valves that are provided in series with at least two of the fluid pressure adjusting valves, are closed during stoppage of energization to hold the fluid pressures, and a brake ECU. The brake ECU controls fluid pressure adjustment achieved by supplying the fluid pressures to the wheel cylinders respectively, opening the communication valves, and adjusting the opening degrees of the fluid pressure adjusting valves to adjust the fluid pressures respectively, and fluid pressure holding achieved by closing the communication valves, opening the fluid pressure adjusting valves, and holding the fluid pressures by means of the communication valves respectively.

Abstract: In a brake device, when a piston (38A, 38B) of a slave cylinder (23) seizes at an advanced position, an out-valve (60, 61) is opened to discharge brake fluid in a wheel cylinder (16, 17; 20, 21) to a reservoir (62). Then, an in-valve (54, 56) and the out-valve (60, 61) are both closed, and a pump (64) is activated. This allows the brake fluid in the reservoir (62) to be supplied to a fluid pressure chamber (39A, 39B) of the slave cylinder (23), enabling a piston (38A, 38B) of the slave cylinder (23), which has seized at the advanced position, to be pushed back to a retreated position. When the seizure of the piston (38A, 38B) is eliminated in this way, the brake fluid pressure generated in the master cylinder (11) can be supplied to the wheel cylinder (16, 17; 20, 21) via the fluid pressure chamber (39A, 39B) of the slave cylinder (23). Accordingly, it is proposed a method of eliminating seizure of a slave cylinder of a brake device capable of the backup of a failure in the slave cylinder (23).

Abstract: An electronically controlled boosted brake system including an isolation valve between a source of pressurized fluid and a boost valve for selectively restricting the flow of fluid from the source to the boost valve. Another feature of the brake system relates to an accumulator valve connected between the boost valve and the accumulator for controlling when the operating pressure of the accumulator is supplied to the boost valve. Yet another feature is a unique master cylinder design including at least one primary piston positioned within a housing in an overlapping relationship with portions of a pair of secondary pistons.

Abstract: The invention relates to a brake system which comprises an actuating device (26), especially a brake pedal (30), and a control/regulation device (22). Said control/regulation device (22) controls at least one electromotive drive device (7a, 7b, 8) in response to the movement and/or position of the actuating device (26). The drive device adjusts a piston (1, 1a, 1b) of a piston/cylinder system via a non-hydraulic transmission device, thereby adjusting a pressure in the working compartment (4?, 4?a, 4b?) of the cylinder. Said working compartment is connected to a wheel brake (15, 17) via a pressure conduit (13, 13a). A valve (14, 14a, 15, 15a, 14?, 14a?) is interposed between the brake cylinder of the wheel brake and the working compartment of the piston/cylinder system. The control/regulation device opens the valve for pressure suppression or pressure build-up in the brake cylinder and closes it in order to maintain the pressure in the brake cylinder.

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 hydraulic system for a slip-regulated dual circuit braking system includes two separating valve receiving holes disposed between a plurality of wheel brake connections which open up into the receiving body and the valve receiving holes of a first valve series include a plurality of inlet valves.

Abstract: A vehicle brake mechanism includes a master cylinder operated with a brake pedal. A first fluid channel connects a first hydraulic chamber of the master cylinder to a first-circuit wheel cylinder. A second fluid channel connects a second hydraulic chamber of the master cylinder to a second-circuit wheel cylinder. A master cut valve is provided in the first fluid channel and is capable of hindering communication between the first hydraulic chamber and the first-circuit wheel cylinder. A slave cylinder is connected to the second fluid channel and is driven by an actuator to generate a hydraulic pressure. A third fluid channel is provided downstream of the master cut valve and the slave cylinder and connects the first fluid channel and the second fluid channel to each other. A connection control valve is provided in the third fluid channel to close the third fluid channel.

Abstract: [OBJECT] To provide a brake control apparatus and method for controlling the brake which is capable of preventing a fluctuation of a brake pedal stroke amount when switching a regenerative braking force to a hydraulic braking force.

Abstract: The invention relates to a technology for effecting electronic brake force distribution in a vehicle brake system, which is equipped with a hydraulic brake boosting, comprising detecting a state requiring an electronic brake boosting and a limiting of the brake pressure generation of the hydraulic brake boosting according to the electronic brake boosting.

Abstract: An externally actuable electrohydraulic vehicle brake system including an externally actuable electrohydraulic vehicle system with slip control. In order to make available a brake system which permits highly dynamic pressure build-up processes without throttling effects in the suction path, in particular through a master cylinder, being adversely affected, it is proposed that the hydraulic pump be assigned means which permit the hydraulic pump additionally to drive a hydraulic charging device which is connected to an inlet of the hydraulic pump.

Abstract: A brake hydraulic pressure control apparatus includes a reservoir, a brake hydraulic pressure supply device, a hydraulic pump, a plurality of wheel cylinders, a cut valve, a plurality of pressure-increasing solenoid valves, a plurality of pressure-decreasing solenoid valves, a discharge passage including a plurality of relief passages and a circulating passage, a controlling device bringing a brake hydraulic pressure to be applied to the wheel cylinders from the hydraulic pump by disconnecting the brake hydraulic pressure supply device from the wheel cylinders by the cut valve while the pressure-increasing solenoid valves are in an open state, and bringing the brake fluid within the wheel cylinders to be circulated to the reservoir via the discharge passage by operating the pressure-decreasing solenoid valves, and a pulsation transmission decreasing device provided at the discharge passage and decreasing a transmission of a pressure pulsation generated by at least one of the pressure-decreasing solenoid valve

Abstract: A flange 62 having motor mounting through holes 63 is provided on a motor 6, motor mounting holes 19 are provided on a base body 1, so that motor mounting screw 61 are passed through the motor mounting through hole 63 from a back surface 1b side so as to be screwed into the motor mounting holes 19 to fix the motor 6 to the base body 1. Housing mounting holes 83 are provided on a control housing 8, housing mounting through holes 17 are formed on the base body 1 so as to be offset from portions which are in abutment with the flange 62, so that housing mounting screws 81 are passed through the housing mounting through holes 17 from the back surface 1b side so as to be screwed into the housing mounting holes 83 to fix the control housing 8 to the base body 1.

Abstract: An electronic control device for a pressure controller, by way of which solenoid valves for pressure control are actuated with current via an actuating electronic system, and having a pump assembly is actuated as a function of a pressure request, which generates a volumetric flow with a periodically fluctuating amplitude. The wheel brake circuit isolating valve, during an active pressure build-up, discharging part of the delivery volume into a reservoir volume, at least in the case of a control operation which performs an intervention for driving stability which is not critical to safety, if the pressure which is built up by the assembly is higher than the pressure which is to be set, the electric coil current for the actuation of the isolating valve is modulated and the periodic actuation being interrupted at least when the control device has to carry out an intervention for driving stability which is critical to safety.

Abstract: A brake control apparatus includes: a master cylinder; a wheel cylinder; a hydraulic pressure source; a control valve arranged to increase or reduce the pressure of the wheel cylinder; an outside gate valve arranged to connect or disconnect between the master cylinder and the wheel cylinder; a brake operation sensing section configured to sense a driver's brake operation; and a control unit configured to control the hydraulic pressure source, the control valve, and the outside gate valve, to perform an automatic-brake pressure-increasing control to control the outside gate valve in a valve closing direction, to drive the hydraulic pressure source, and thereby to increase the pressure of the wheel cylinder in accordance with a vehicle condition, and to increase a driving quantity of the hydraulic pressure source when the brake operation is sensed during the automatic-brake pressure-increasing control.

Abstract: A braking system having a master cylinder to which wheel brake circuits (I, II) can be connected, a first piston coupled to a brake pedal, a second piston by means of which the master cylinder is actuated, a third piston actuated by the first piston and connected in a force transmitting fashion to the second piston, a simulation device which gives the driver of the vehicle a pedal sensation, an intermediate space between the second piston and third piston, a pressure generating device which controls the pressure in the intermediate space, a pressure medium reservoir vessel which is under atmospheric pressure and which can be connected hydraulically to the intermediate space, and means for electrically controlling the pressure in the intermediate space.

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: Systems and methods to prevent dragging of a fluid pressure type disk brake system are described herein. Brake fluid pressure generated by a master cylinder during a braking operation is transmitted to a wheel cylinder via a VSA system. The VSA system includes a low pressure accumulator and an out-valve disposed between the wheel cylinder and the low pressure accumulator. Temporarily opening the out-valve during a braking operation allows part of the brake fluid that would otherwise be supplied to the wheel cylinder to be supplied to the low pressure accumulator. After the braking operation by the driver is completed, brake fluid supplied to the wheel cylinder is returned to the master cylinder. Thus, a piston of the wheel cylinder is withdrawn by an extra amount corresponding to the amount of brake fluid supplied to the low pressure accumulator, thus reliably prevents disk pad dragging in the disk brake system.

Abstract: A brake fluid pressure control device for vehicles is provided capable of adjusting with a simple control a brake fluid pressure applied to a wheel brake. The control device includes for each system of an X-pipe arrangement: a cut valve as a linear solenoid valve provided to a first fluid pressure path; a pump capable of pressurizing brake fluid on a side toward the wheel brakes than the cut valve on the first fluid pressure path; and a control valve provided on the second fluid pressure path. The control device further includes: a target fluid pressure setting portion for setting a target fluid pressure for each of the wheel brake; and a valve actuating portion for drive-controlling the cut valve and the control valve, based on the target fluid pressure.

Abstract: A braking system is described for a vehicle, including: a master brake cylinder having at least one chamber, which is hydraulically connected to at least one wheel brake cylinder for braking a wheel of the vehicle; a hydraulic actuating device, which actuates a piston of the master brake cylinder in order to thereby pressurize hydraulic fluid in the chamber; an accumulator, which stores hydraulic fluid under pressure and supplies it to the actuating device for actuating the piston of the master brake cylinder; and a pump, which, in a first operating mode of the braking system, conveys hydraulic fluid from a tank to the accumulator and, in a second operating mode of the braking system, pumps hydraulic fluid from the wheel brake cylinder to the master brake cylinder.

Abstract: In a brake system including a master cylinder and an electrically-driven hydraulic pressure generator with front and rear pistons, when the hydraulic pressure generator cannot be operated and a failure of a first hydraulic system linked to a rear fluid chamber of the generator occurs and makes a first hydraulic system open to the atmosphere, the brake-fluid pressure of a second hydraulic system transmitted from the master cylinder to a wheel cylinder via a front fluid chamber of the generator is used to perform braking. A forward-facing third front cup seal provided at an intermediate portion of the front piston prevents the brake-fluid pressure generated by the master cylinder from leaking out from a front supply port via the rear fluid chamber. At the same time, a stopper prevents the pressure of the front fluid chamber from moving the front piston excessively backward. The braking is accordingly secured by use of the second hydraulic system linked to the front fluid chamber of the motor cylinder.

Abstract: A brake system for a vehicle includes a brake unit, a master cylinder, an accumulator, and a manifold configurable to direct brake fluid pressure generated by the master cylinder to the accumulator or to the brake unit. A solenoid valve can be used to hydraulically align the manifold. The brake system can be used as an adjunct or supplement to a vehicle's primary service brake system.

Abstract: A method for controlling and/or regulating an electronically triggerable vehicle brake system, operating on the return principle, and to such a brake system in which by an adapted triggering of the drive motor for the pressure generator, the pumping quantity of the pressure generator is varied such that the difference between these flows of pressure medium to and from the master cylinder assumes a minimal value, preferably a value of zero. To that end, the driving rpm of the pressure generator is preferably varied. The trigger signal for the drive motor can be ascertained by an electronic control unit from measurement outcomes from sensors within the vehicle brake system, or it can be estimated with the aid of a hydraulic volume model stored in memory in the control unit. The trigger signal can be controlled or regulated.

Abstract: A controller includes an initial current value calculation unit calculating an initial current value to open a normally open linear solenoid valve when a hydraulic pressure is shifted from a pressure reducing state or a pressure holding state to a pressure increasing state, a valve opening amount increasing unit reducing the energization amount from the initial current value so that a valve opening amount of the normally open linear solenoid valve increases, an offsetting necessity determination unit determining based on a predetermined condition whether or not the energization amount needs to be offset to an increase side when the valve opening amount increasing unit reduces the energization amount, and an energization amount offsetting unit offsetting at least once the energization amount to an increase side only for a predetermined time period when it is determined that such offsetting is necessary.

Abstract: A vehicle braking assembly comprising a master cylinder (10) with no central valves, a brake fluid reservoir (62) mounted separately from the master cylinder (10), pumps (50) for pressurizing the brake fluid and first solenoid valves (68) in pipes (66) connecting the brake fluid reservoir (62) to the inlets of the pumps (50). According to the invention, a calibrated orifice (76) and a nonreturn valve (78) which are connected in parallel are mounted in these pipes (66).

Abstract: A brake hydraulic pressure control apparatus is provided with wheel cylinder pressure inference value acquisition means (step 402) for acquiring an inference value of the wheel cylinder pressure, master cylinder pressure inference value acquisition means (step 404) for acquiring an inference value of the master cylinder pressure by utilizing a wheel cylinder pressure inference initial value, reaction force compensation amount acquisition means (step 406) for acquiring a reaction force compensation amount which is a value depending on the variation of the master cylinder pressure caused by the flowing of brake fluid during an ABS control, and differential pressure inference value acquisition means (step 410) for acquiring an inference value of the differential pressure between the master cylinder pressure and the wheel cylinder pressure by adding the reaction force compensation amount to the difference between the master cylinder pressure inference value and the wheel cylinder pressure inference value.

Abstract: An ECU executes a program including the steps of: if brake hold control is currently exerted , setting at zero a controlled value of a degree of operation of an accelerator pedal used as a controlled value of a degree of a request made by a driver for acceleration, to control a force output to drive the vehicle; if an actual value of the degree of operation of the accelerator pedal serving as an actual value of the degree of the request made by the driver for acceleration is larger than a predetermined degree, determining that there is a request from the driver for acceleration; outputting a command to cancel the brake hold control; and converging the controlled value of the degree of operation of the accelerator pedal to the actual value of the degree of operation of the accelerator pedal.

Abstract: A braking control apparatus includes a brake operating member, a hydraulic circuit supplying a wheel cylinder hydraulic pressure to a wheel cylinder, a pump generating a hydraulic pressure so that the wheel cylinder hydraulic pressure reaches a value in response to an operation of the brake operating member, a circulation conduit provided at a portion of the hydraulic circuit, the circulation conduit through which a partial amount of brake fluid discharged from the pump is circulated back to the pump, a pressure regulating valve adjusting a pressure difference between an upstream side of the pressure regulating valve connected to the wheel cylinder and a downstream side, and a controlling device calculating, on the basis of a circulation flow rate of the brake fluid passing through the pressure regulating valve, an applied current to the pressure regulating valve for obtaining a target of the pressure difference and controlling the applied current.

Abstract: A brake control apparatus for a vehicle includes a first calculating portion for calculating a master cylinder pressure, a first determining portion for determining whether or not the brake operation is performed, a second calculating portion for calculating a target wheel cylinder pressure, a third calculating portion for calculating a controlled pressure, a controlling portion for controlling a pressure difference control valve, a second determining portion for determining whether or not the vehicle is stopped, and a driving portion for specifying a drive pattern of a motor to a first motor drive pattern in a case where the vehicle is not stopped, the motor driving a pump for discharging a brake fluid, the driving means specifying the drive pattern to a second motor drive pattern in a case where the vehicle is stopped, the driving means driving the motor based on the motor driving pattern specified.

Abstract: Faster shifting operation and reduced shift shock in response to a braking operation during a lift-foot-up shifting may be achieved when an automatic transmission is controlled by a method for compensating a hydraulic pressure that includes: determining whether a lift-foot-up shifting of the automatic transmission is under control; calculating a vehicle speed of a vehicle; calculating a deceleration rate of the vehicle; calculating a compensation hydraulic pressure to be applied to a friction member of the transmission, based on the deceleration rate; calculating a on-coming pressure based on the calculated compensation hydraulic pressure; and applying the calculated on-coming pressure to the friction member.