Abstract: A vehicle brake system (10) is provided which compensates for brake pedal feel variation so as to provide for enhanced braking feel to the vehicle operator. The brake system (10) includes a brake command input (10), an accelerometer (22) for sensing longitudinal acceleration of the vehicle, and friction brakes (26) and regenerative brakes (29) for generating braking force to be applied to brakes on the vehicle. The vehicle brake system (10) further includes a controller (12) for detecting a brake torque variation as a function of the sensed acceleration and the brake demand signal. The controllers (12) further adjusts a torque command signal to adjust the amount of braking torque generated by the brakes (26) so as to compensate for brake torque variation.

Abstract: A relay valve based accelerated brake pipe application and release system having an electronic control module. A source of fluid pressure is connected to a valve device for receiving and transmitting fluid pressure signals. The valve device is connected to an exhaust to atmosphere. An accelerator volume has a fluid connection to the valve device for storing a predetermined volume of fluid. A brake pipe transducer is electronically connected to the control module and has a fluid connection to the valve device for transmitting a first pressure signal to the control module. A cut-out solenoid valve is electronically connected to the control module and includes a fluid connection to the brake pipe transducer for receiving at least one of a cut-in and a cut-out signal. An emergency solenoid valve is electronically connected to the control module and has a fluid connection to the cut-out solenoid valve for receiving an emergency signal.

Abstract: The present invention relates to a method and a device for controlling braking equipment of a motor vehicle. Here, an operating state of a motor vehicle is determined, in which the motor vehicle is to be brought from a state, in which its speed is not zero, into a state, in which the vehicle no longer moves. If such a transition from a traveling state into a state of standstill is determined, braking equipment of the motor vehicle is controlled such that braking forces are produced, which are capable of bringing the motor vehicle into the state of standstill and/or assisting a vehicle driver in doing this. It is also possible to produce braking forces in the state of standstill, which are capable of holding the motor vehicle in the state of standstill. The present invention additionally enables to assist a vehicle driver when starting a motor vehicle. In this case, an operating state of the motor vehicle is detected in which the motor vehicle is to be brought from a state of standstill into a traveling state.

Abstract: A vehicle brake systems (10) is provided which compensates for brake pedal feel variation to provide enhanced braking feel. The brake system (10) includes a brake pedal (18), a wheel sensor (20), and a database (16) for storing target accelerations and torque to pressure parameters. The brake systems (10) may employ a friction brakes (26) and regenerative brakes (29). The brake system further includes a controllers (12) for controlling the amount of braking, including the friction brake actuator (24). The controller (12) determines brake acceleration caused by braking torque and determines a target acceleration based on the driver commanded input. The controller (12) also determines a brake acceleration error as the difference between the target acceleration and the brake acceleration. The controller adjusts the torque-related parameter to reduce the brake acceleration error by adjusting the braking torque generated by the friction brake actuator to compensate for brake torque variation.

Abstract: A method and a device for controlling a brake system, where a braking intention value, which is used for controlling the brake system, is determined from at least one brake pedal actuation parameter. When the braking intention value is determined from the actuation parameter, its direction of change is taken into account.

Abstract: An integration train brake system including a single brake controller providing locomotive and train brake commands. A first control transmits a car brake signal on an electrical network for train brake commands to EP cars. A second control transmits a locomotive brake signal on the locomotive brake pipe for train and locomotive brake commands. The brake system may have a pneumatic mode and an electrical mode. The first control transmits car brake signals on the network in the electrical mode and the second control transmits car brake signals on the train brake pipe for the pneumatic mode. The second control transmits locomotive brake signals on the locomotive brake pipe in either mode. If the train is all electropneumatic, cars and locomotive braking signals are provided on the network.

Abstract: A vehicle brake control system comprising a master cylinder, a wheel cylinder of a road wheel, a brake circuit connecting the master cylinder and the wheel cylinder, a pressure control valve installed in the brake circuit, a reservoir into which a brake fluid is led from the wheel cylinder when the pressure control valve operates to reduce the hydraulic pressure of the wheel cylinder, an electric fluid pump that, upon energization thereof, pumps the brake fluid from the reservoir to the brake circuit at a position upstream of the pressure control valve, an inlet circuit connecting the inlet opening of the pump to the master cylinder, an inside gate valve installed in the inlet circuit, and a control unit that controls the pressure control valve, the inlet gate valve and the electric fluid pump and carries out a predetermined brake control to adjust the hydraulic pressure of the wheel cylinder by operating the pressure control valve.

Abstract: Method and apparatus for controlling braking on a train having ECP railcars using a conventional automatic brake valve. The locomotive and railcars are connected to brake pipe and a wireline, or use RF communications. A brake handle or other brake control valve interface is operated to cause a pressure change in an equalizing reservoir. The relay valve is isolated from the pressure change and connected to a reference pressure whereby brake pipe pressure is maintained. The pressure change is sensed and a signal generated representative thereof which is used to determine the level of braking commanded on the railcars. The apparatus includes an interface unit interposed between pertinent ports connecting the automatic brake valve, equalizing reservoir and brake pipe, and an equalizing reservoir pressure sensor to provide an output signal to an ECP controller for controlling braking on the railcars.

Abstract: A hydraulic brake apparatus for a vehicle includes a hydraulic pressure generator which generates and outputs a power pressure irrespective of brake pedal operation, a regulation valve which regulates the power pressure to a predetermined pressure corresponding to the brake pedal operation force and outputs the predetermined pressure, and a master cylinder having a master cylinder pressure chamber and an auxiliary pressure chamber connectable to an output side of the regulation valve. The master cylinder is operated by auxiliary pressure in the auxiliary pressure chamber to generate a master cylinder pressure corresponding to the auxiliary pressure. A wheel brake cylinder is operated by the master cylinder pressure to apply braking force to a wheel. A pressure modulation device is disposed in a pressure passage connecting the output side of the regulation valve to the auxiliary pressure chamber to modulate the auxiliary pressure to a pressure less than the predetermined.

Abstract: The invention relates to a drive and/or braking device, specifically to be installed in motor vehicles, having an electric drive unit and/or an electromagnetic brake unit, where a shaft can be driven by the drive unit and/or braked by the brake unit, having a closed, specifically water- and air-tight housing accommodating the drive and/or brake unit, and a wiring harness to connect the drive device to a source of current. The invention is characterized in that the wiring loom has at least one hollow lead to vent the interior of the housing.

Abstract: A pre-engagement unit for a braking pressure modulator for a pressure regulating circuit includes a first pneumatic inlet, a second pneumatic inlet, a first pneumatic output terminal, and a second pneumatic output terminal. The unit includes an electrically actuated valve system having a plurality of solenoid valves and a plurality of electrical terminals connected to output terminals of an electronic control unit. An electric braking command signal transmitter delivers a driver initiated electric brake value setting to an input of the electronic control unit. Under normal conditions, a supply pressure and a redundancy pressure are delivered at the first pneumatic output terminal to be converted by an air quantity augmenting relay valve to a braking pressure. In case of failure of the electronic braking system, the redundancy pressure is delivered at the first pneumatic output terminal to be converted by the air quantity augmenting relay valve to the braking pressure.

Abstract: Method and apparatus for controlling braking on a train having ECP railcars using a conventional automatic brake valve. The locomotive and railcars are connected to brake pipe and a wireline, or use RF communications. A brake handle or other brake control valve interface is operated to cause a pressure change in an equalizing reservoir. The relay valve is isolated from the pressure change and connected to a reference pressure whereby brake pipe pressure is maintained. The pressure change is sensed and a signal generated representative thereof which is used to determine the level of braking commanded on the railcars. The apparatus includes an interface unit interposed between pertinent ports connecting the automatic brake valve, equalizing reservoir and brake pipe, and an equalizing reservoir pressure sensor to provide an output signal to an ECP controller for controlling braking on the railcars.

Abstract: A brake release unit is provided between a transmission control unit for controlling a transmission and a clutch device. Pressure oil supplied from a hydraulic pressure source to the clutch device is also guided to an accumulator of the brake release unit. When the engine is stopped, pressure oil from the clutch device is collected in a reservoir, and the transmission operates as a parking brake. Pressure oil accumulated in the accumulator is kept as it is. If a solenoid switching valve of the brake release unit is driven as a result of operation of a switch in the operator's cabin, pressure oil accumulated in the accumulator is supplied to the clutch device. As a result, it is possible to easily release the parking brake.

Abstract: An intelligent input push rod assembly for applying an input force from a brake pedal to a power booster of a brake system. The input push rod assembly includes a sensor that is capable of generating an electrical output having a magnitude that varies with the amount of force applied to the input push rod by the brake pedal. Preferably, the sensor generates an output voltage signal that is generally proportional to the input force applied to the input push rod. A shunt is provided so that springs associated with the sensor operate in a generally linear force-deflection range of the springs. The output signal generated by the sensor is applied to a brake light control system that is supported by the input push rod assembly. The brake light control system uses the signal generated by the sensor to determine whether the vehicle brake lights should be illuminated and also to cause direct illumination of the brake lights during a braking operation.

Abstract: A brake operating speed detecting device includes a plurality of filters having different cut-off frequencies and inputs thereto a vehicle body deceleration that changes at the time of braking. The state of distribution of output values obtained through the filters, or the difference d between the output values, corresponds to the rising speed of the vehicle body deceleration. Because the rising speed corresponds to the brake operating speed, the brake operating speed can be detected from the state of distribution of the output values or the difference d.

Abstract: The problem of maintaining fluid modulus during a fast mode release of fluid pressure in a force generating apparatus having a force generating actuator fluidically coupled to a force generating device is solved by limiting the rate at which the actuator can reduce fluid pressure in an apply chamber of the actuator to a rate low enough to preclude a change in modulus of the fluid during the fast mode release.

Abstract: A braking and driving force control apparatus and method are for a vehicle having a frictional braking device for applying a braking force individually to each wheel and a regenerative braking device for generating a common braking force to a plurality of wheels. A target braking force is calculated on the basis of a driver's braking operation or traction control. The regenerative braking device is controlled so as to achieve the smallest target braking force of the target braking forces of the plurality of wheels. The frictional braking device is controlled so as to achieve the target braking force of another wheel, different from the wheel having the smallest target braking force, in cooperation with the regenerative braking device. Thus, the efficiency of regenerating energy is enhanced.

Abstract: A vehicle braking system comprising an electro-hydraulic braking system of the type which operates normally in a brake-by-wire mode wherein hydraulic pressure is applied to braking devices at the vehicle wheels (18a-d) in proportion to the driver's braking demand as sensed electronically at a brake pedal (10), and which, if the brake-by-wire mode should fail, operates in a push-through mode wherein hydraulic pressure is applied to the braking devices at the vehicle wheels (18) by way of a master cylinder (34) coupled mechanically to the braked pedal (10), and an electric parking braking system for enabling the braking devices to be actuated for parking braking purposes. For supplementing the push-through braking provided by the electro-hydraulic braking system in the event that the brake-by-wire mode has failed, it is arranged that the operation of the brake pedal (10) by the driver also causes operation of the electric parking braking system.

Abstract: The system comprises an electric line which extends along the train, and head apparatus and tail apparatus connected to the ends of the line.

Abstract: An electro-hydraulic braking system of the type which operates normally in a brake-by-wire (EHB) mode wherein hydraulic pressure is applied to braking devices at the vehicle wheels in proportion to the driver's braking demand as sensed electronically at a brake pedal, but which, if the brake-by-wire mode should fail, operates in a push-through mode wherein hydraulic pressure is applied to the braking devices at the vehicle wheels by way of a master cylinder coupled mechanically to the brake pedal. In order to minimize jolting within the system when changeover from push-through to brake-by-wire braking takes place, the existence of a push-through condition is recognized during an initialization stage of the EHB mode and the initial EHB demand is set at the prevailing push-through braking or deceleration level and then adapted smoothly to the desired EHB demand.

Abstract: A brake circuit comprises a master cylinder in communication with a front wheel brake, and in communication with a rear wheel brake through a hydraulic line. A sensor senses pressure in the master cylinder, and an electronic control unit in communication with the sensor controls an apply valve to proportion pressure between the front wheel brake and the rear wheel brake.

Abstract: An electro-hydraulic braking system of the type which operates normally in a brake-by-wire mode wherein hydraulic pressure is applied to braking devices at the vehicle wheels in proportion to the driver's braking demand as sensed electronically at a brake pedal (10), and which, if the brake-by-wire mode should fail, operates in a push-through mode wherein hydraulic pressure is applied to the braking devices at the vehicle wheels by way of a master cylinder (34) coupled mechanically to the brake pedal (10), the system including also an electric parking braking device for enabling the braking devices to be actuated for parking braking purposes but which is also arranged to be activated to supplement push-through braking in the event of failure of the brake-by-wire mode. Electro-hydraulic braking at the rear axle of the vehicle is allowed only when a control unit (13) of the electro-hydraulic braking system has confirmation that the electric parking device is in a satisfactory operational state.

Abstract: A trainline communication controller for placement on a rail car or locomotive of a train in order form a network having a housing with a front plate assembly which includes a plurality of external electrical receptacles. A plurality of circuits, including surface connectors, are positioned in the housing. A printed circuit board including connector smating directly with the surface connectors of the circuits and where in the receptacles are mounted on the printed circuit board.

Abstract: A vehicle hydraulic brake apparatus includes a controller and a hydraulic pressure detector which detects a master cylinder hydraulic pressure produced by a master cylinder. The controller compares the master cylinder hydraulic pressure detected by the hydraulic pressure detector with a predetermined pressure value, implements operation of the auxiliary hydraulic pressure source when the depressing operation of the brake operating member is judged to be in a stage where the detected master cylinder hydraulic pressure is above the predetermined pressure value, and terminates the operation of the auxiliary hydraulic pressure source when the master cylinder hydraulic pressure detected by the hydraulic pressure detector is stabilized at an approximately fixed pressure value after being increased.

Abstract: A brake control system and method that includes high-pressure fluid supply sources and cutoff devices for cutting off communication between a master cylinder and wheel cylinders during a control process. A determination is made whether there is inconsistency between detection values of two pressure detectors for detecting a pressure in the master cylinder and a detection value of a stroke detector for detecting a stepping-on stroke of a brake pedal. A final target deceleration of the vehicle is calculated based on the detection values that are consistent with each other and braking force of each wheel is controlled based on the final target deceleration.

Abstract: A brake system with hydraulic brake boosting has a hydraulic actuating unit which comprises a hydraulic reservoir, a brake pedal, a brake-pressure generator and a pedal-travel simulator, a hydraulic unit comprising a pressure generator, a hydraulic wheel-brake device and a control unit for coordinating the functions of the actuating unit, of the hydraulic unit and of the wheel-brake device. The pedal-travel simulator possesses a variable displacement volume which is connected to the hydraulic reservoir via a hydraulic line. In order to design electrohydraulic brakes by simple means so as to be more fail-safe, a return line is provided between the wheel-brake device and the displacement volume of the pedal-travel simulator.

Abstract: A hydraulic brake apparatus for a vehicle comprises a master cylinder and an auxiliary hydraulic pressure source. A master cylinder hydraulic pressure outputted from the master cylinder is adjusted by adding a master cylinder hydraulic pressure in response to an operation of a brake operating member to a master cylinder hydraulic pressure at an auto-braking control when the brake operating member is operated during the auto-braking control. The master cylinder hydraulic pressure is adjusted by controlling an operation of a valve means so as to increase a power hydraulic-pressure supplied from the auxiliary hydraulic pressure source to a regulating means corresponding to the amount of the operation of the brake operating member.

Abstract: A rear axle braking system for a vehicle has a primary electronic braking circuit supplied with a source of primary braking pressure and a mechanical back-up braking circuit supplied with a source of back-up braking pressure. The braking actuator receives braking pressure and thereby brakes a wheel on a vehicle axle. During braking, a changeover valve is normally actuated to apply the primary braking pressure to the braking actuator. In the event of an electronic system failure, the changeover valve is not applied and instead the source of back-up braking pressure is supplied to the actuator. A regulating valve is located in the back-up braking circuit between the source and the changeover valve and is operable as a function of axle loading and back-up brake pressure to control the supply of back-up braking pressure to the changeover valve. The application of additional braking pressure to a wheel can be limited if the loading on the axle is likely to result in vehicle instability when braking.

Abstract: A remote train-line braking control system includes first and second air supplies and a first control valve connected in fluid communication between the first air supply and an air pressure controlled diaphragm that controls a fluid pressure supplied to a train-line braking system. A second control valve is connected in fluid communication between the second air supply and the first control valve. The first and second control valves are operable for individually connecting the diaphragm to the first air supply, the second air supply and atmospheric pressure. The diaphragm is responsive to the pressure of air supplied thereto for controlling a fluid pressure supplied to the train-line braking system. When the diaphragm is exposed to atmospheric pressure, the brakes of the train-line braking system are fully applied.

Abstract: A control device for the parking lock of a motor vehicle has at least one actuating drive (46) that can be operated by triggering devices and with which a locking device (11) can be moved between engaged and disengaged positions. For reliable operation, at least two independent triggering devices are provided and a change in position takes place only if both triggering devices (56, 58) are actuated. Preferably a hydraulic piston (46) brings the parking lock into its disengaged position when subjected to pressure. The triggering devices are constructed as solenoids (56, 58) under the control of two electrical controllers (140, 142) that undertake an evaluation of relevant control and measurement parameters.

Abstract: A brake control method and apparatus capable of locating fluid carrying lines away from a vehicle dash and providing threshold pressure detection is provided. The apparatus includes an electric switch assembly which can have portions that are mounted in the vehicle cab. A pressure switch subassembly and a control subsystem electrically communicate with the electric switch assembly. The electric switch assembly provides electrical current to a solenoid in the control subsystem, opening a pneumatic valve and providing air pressure to other components of the control subsystem and a brake release actuator. If electrical current is removed from the solenoid in the control subsystem, the pneumatic valve is closed, removing air pressure from other components of the control subsystem and the brake release actuator. If less than a threshold pressure is detected at the pressure switch subassembly, the electric switch assembly does not provide electrical current to the control subsystem.

Abstract: To monitor the emergency braking capability of an electro-hydraulic braking system (EHB) wherein, during normal operation, the brake pressure in the wheel brakes (8 to 11) is generated by means of a pressure source comprised of a hydraulic pump (18), an accumulator (16), and hydraulic valves, and wherein a switch-over to a hydraulic connection between a master cylinder (1) and the wheel brakes (8 to 11) is executed in the event of an emergency braking situation, the special feature includes that the emergency braking mode is tested at each initialization of the brake system using the steps mentioned in claim 1.

Abstract: A system and method for braking a towed conveyance. In one embodiment, a system is provided for use on a trailer (102) having an axle assembly (108). The system (100) includes a motor controller (124), a pair of electric motor/generators (120), a battery (122), a battery controller (126), and sensors (128). Controller (124) monitors the yaw rate of trailer (102) by use of sensors (128). Based upon the monitored yaw rate, controller (124) selectively activates motor/generators (120) which provide a regenerative braking torque to axle assembly (108), thereby braking trailer (102) and generating electrical energy which may be used to recharge battery (122).

Abstract: A parking brake switch for a vehicle including a switch having a contacting surface, the switch being positioned between an actuated state and a deactuated state, a first contact connected to a brake valve associated with an electro-hydraulic braking system, a second contact connected to a pair of electronic control modules, and a third contact connected to the pair of electronic control modules and a coil, the contacting surface being adapted to engage all of the contacts when the switch is in the actuated state.

Abstract: Apparatus for controlling a brake system operable using an air supply, includes an electronic control (8) for controlling air distribution and air to an air to electrical converter (12) for generating an electrical supply for energising the electronic control using air under pressure from the air supply (1). Air distribution is controlled either as a result of sensed pressure in a brake control pressure pipe (6) or as a result of an electronic brake control signal.

Abstract: A coordinated regenerative brake system controls total brake torque to brake a vehicle in accordance with brake pedal operation and achieve deceleration intended by the driver's operation of the brakes when the accelerator is not depressed. In a vehicle speed range below specific speed V1, engine brake equivalent torque Ta is set to decrease gradually to zero in accordance with vehicle speed V. When brake operation starts at a vehicle speed exceeding V1, the desired total brake torque Tq working on the vehicle is the sum of brake torque Tb corresponding to brake operation, and engine brake equivalent torque Ta, until vehicle speed reaches specific speed V1. When vehicle speed is V1 or less, brake torque is controlled using as desired total brake torque Tq the sum of brake torque Tb corresponding to brake operation, and first engine brake equivalent torque Ta1, if brake operation amount Sb is greater than or equal to a first brake operation amount Sb1.

Abstract: A vehicle braking system having an operating member (103) by way of which a foundation braking force can be transmitted to a brake actuator in accordance with a driver's intentions, wherein there is provided a park brake mechanism (24) which provides the facility of electric motor driven actuation of the operating member (103) of the brake for the parking phase of braking.

Abstract: A brake control device prevents movement of a vehicle, when an unsafe condition exists, by automatically applying the parking or other brake. The brake control system may prevent movement should the unsafe condition exist within, on or around, a towed device such as a trailer, a trailer-house or other recreational or non-recreational equipment. The brake control system may set a brake or parking device on the towed device whenever the towed device is disconnected from the motorized vehicle, or whenever equipment on the towed vehicle is extending outward or is otherwise un-stowed in a position unsafe for traveling, whether or not the towed vehicle is connected to the towing vehicle. Interface connections from the towed device to the powered towing vehicle may include wireless, electrical wire, fiber optics, analog, digital, or others.

Abstract: The present invention relates to a brake assembly for a vehicle having an air spring wherein a brake signal operates a brake cylinder of the vehicle. A proportioning valve, having its load responsive element disabled and being responsive to the brake signal, provides a proportioned brake signal to the brake cylinder. A switch, responsive to an air spring pressure signal selectively connects the brake signal to the brake cylinder. The present invention further relates to a method for retrofitting a brake system by disabling the load sensing element of a proportioning valve and inserting a switch in parallel with the proportioning valve.

Abstract: A system and method for ABS stability control is provided, the method comprising the steps of determining whether a first wheel is in an ABS mode; determining whether the first wheel is in an apply mode; determining whether a second parallel wheel is in the release mode; calculating an adjusted wheel slip if the first wheel is in the ABS mode, the first wheel is in the apply mode, and the second parallel wheel is in the release mode; and determining a control mode for the first wheel using the adjusted wheel slip.

Abstract: Improving operating feelings and energy saving are aimed for a brake system of the type in which a predetermined differential pressure is produced between a master cylinder and wheel cylinders by a hydraulic pressure limit/changeover device during regenerative braking, and at the end of regenerative braking, the differential pressure is cancelled by increasing the pressure in the wheel cylinders with fluid sucked up from a reservoir for pressure increase by an electric pump. A reservoir for pressure increase, which is also used as a stroke simulator, is provided on the master cylinder side of the hydraulic pressure limit/changeover device, an on-off valve and a check valve are provided parallel to each other on the inlet side of the reservoir for pressure increase.

Abstract: A trailer brake system includes a control sensor adapted to provide a signal when the braking system of the tow vehicle is actuated, at least one trailer brake actuated by pressurized brake fluid, a brake fluid reservoir, a brake fluid pump receiving fluid from the brake fluid reservoir, and a first solenoid valve connected to the brake fluid pump and directly connected to the trailer brake. A brake fluid accumulator receives pressurized brake fluid from the brake fluid pump and is connected to the first solenoid valve to quickly provide pressurized brake fluid to the trailer brake to increase the braking force. A second solenoid valve connects the trailer brake and the brake fluid reservoir so that brake fluid can be returned to the reservoir to reduce to reduce the fluid pressure and resulting braking force. A feedback pressure sensor is capable of generating a signal that represents braking force applied to the trailer brake.

Abstract: A regenerative braking system and method for a batteriless fuel cell vehicle includes a fuel cell stack, a plurality of ancillary loads, and a regenerative braking device that is coupled to at least one wheel of the vehicle. The regenerative braking device powers ancillary loads when the vehicle is coasting or braking. The fuel cell powers the loads when the vehicle is accelerating or at constant velocity. The regenerative braking device dissipates power in an air supply compressor when the vehicle is traveling downhill to provide brake assistance. The compressor can be run at high airflow and high pressure to create an artificially high load. A bypass valve is modulated to adjust the artificially high load of the compressor. A back pressure valve protects the fuel cell stack from the high airflow and pressure. A controller controls a brake torque of the regenerative braking device as a function of vehicle speed and modulates the bypass valve.

Abstract: For externally actuating a brake system, both the surroundings of the brake pedal and, if necessary, additional parameters (d,d ,Vref) are monitored a sensor unit (6,10,11). Then the brake pressure (pnom) will be set automatically in an expedient manner in dependence of the individual parameters that were evaluated. Advantageous further embodiments include proposals for precharging the brake or braking slightly or automatically applying a higher brake pressure in dependence of the measuring results, in so far as this is reasonable with respect to road conditions and the driver's wishes as they were assumed by the system.

Abstract: A brake value signal transmitter that is to be connected to a brake pedal of a motor vehicle senses activations of the brake pedal with a plurality of sensors and converts them into electrical signals. The brake pedal is connected via a rotatably mounted pressure rod to a piston that can be displaced in the interior of a cylinder. A pressure space that is filled with a gas, has a variable volume, and can be filled at least partially with hydraulic oil is provided in the cylinder. The gas is compressed by the piston when the brake pedal is activated, and in the process increases a reaction force acting on the brake pedal.

Abstract: A hydraulic braking pressure control unit including three or more hydraulic pressure control components, and a holder structure which holds those hydraulic pressure control components, wherein the three or more hydraulic pressure control components are selected from electromagnetically operated hydraulic pressure control valves capable of controlling a pressure of a working fluid in a brake cylinder in a braking system, and pressure detecting devices, to detect respective pressures of the fluid used to control the electromagnetically operated hydraulic pressure control valves. The three or more hydraulic pressure control components include three hydraulic pressure control components which are attached to the holder structure such that one of the three hydraulic pressure control components is spaced from the other two hydraulic pressure control components by substantially the same distance.

Abstract: A brake pedal feel emulator for a motor vehicle brake system includes a housing having a bore for supporting a first piston operably connected to a brake pedal. An elastomer spring encapsulating a magnet or magnetized by the dispersion of ferrous particles throughout the spring body is engageable by the first piston and is disposed in the emulator housing. A second piston is disposed in the housing and engaged with the elastomer spring and with a mechanical spring. Hall effect sensors mounted on the emulator housing sense changes in a magnetic field generated by the magnet to provide signals to a controller proportional to travel and force exerted on the brake pedal for use in controlling the vehicle brake system.

Abstract: A braking force control apparatus is provided that controls the motor displacement to obtain a braking force that corresponds to the pedal depressing force. The braking force control apparatus detects the initial contact point between the pads and the rotor, which changes due to wear and heat deformation. The braking force control apparatus also adjusts a motor displacement command to enable an accurate braking force control. The braking force control apparatus detects the initial contacting point by detecting the electrical current value of the motor. When the motor is driven at a constant speed to contact the pads against the rotor, the electrical current value is stable. Thus, the initial contacting point is detected by using the motor displacement at the time when the electrical current value increases and becomes equal to or greater than the initial threshold value.

Abstract: A braking system for braking a wheel of an automotive vehicle, including a brake for braking the wheel and an operating device operable to produce an output corresponding to an input thereof, for activating the brake according to the output, and wherein a change of the output of the operating device is delayed with respect to a change of the input depending upon an operating condition of the braking system. The braking system includes a brake-operating-force increasing device operable on the basis of a delay of the change of the output of the operating device with respect to the change of the input, to increase an operating force of the brake to a value which is larger than a value corresponding to the output of the operating device.

Abstract: A device for determining set values for the braking forces or braking torque of the brake system of a vehicle comprising an electric drive, a friction brake applying braking forces to all wheels according to corresponding set values, an electrodynamic regenerative brake applying braking forces to at least one axle according to corresponding set values, and an element for determining the set values according to the desired vehicle deceleration, wherein such element for determining the set values according to the deceleration requirement either makes the set value for the electric regenerative as large as possible or sets the set values for the electrodynamic regenerative brake and for the friction brake primarily according to criteria concerning the distribution of the braking forces on the axles. In addition, an element for correcting a set value for the friction brake, preferably at the front axle according to the dynamic behavior of the electrodynamic regenerative brake may be provided.