A hydraulic system for an electric working vehicle or hybrid working vehicle of the kind having an electric source of power and an alternative source of power, the hydraulic system comprising: one or more hydraulically actuated devices; and a hydraulic pump configured to supply hydraulic fluid to the one or more hydraulically actuated devices; wherein the hydraulic pump is configured to operate in a low output state when a flow of hydraulic fluid is not required by the one or more hydraulically actuated devices; and wherein the hydraulic system is configured to use hydraulic fluid supplied by the hydraulic pump in the low output state for one or more auxiliary functions of the hydraulic system.

A power-off emergency braking system, or parking brake system is presented in which, at each power-up, energy is stored in the structure of the brake so as to ensure the power-off application of the brake and the holding of same in the event of an interruption to the power supply of the device.

A method for operating a motor vehicle, which is equipped with a plurality of wheels and with a plurality of electric machines. Each electric machine can be coupled to at least one wheel and be operated in a plurality of operating modes. The respective electric machines perform rotations in a first engine operating mode in a first direction of rotations. Electric energy is converted to mechanical energy. The at least one wheel is rotated in a forward direction, whereby the vehicle is driven with the at least one wheel. The respective electric machines perform rotations in a second generator operating mode in a second direction of rotations, which is opposite to the first direction of rotations, whereby electric energy is converted to mechanical energy.

Provided is an electric brake device that achieves improved responsiveness, cost reduction and also reduces the copper loss in an electric motor, thus reducing power consumption. The electric brake device includes a brake rotor (8), a friction member (9), a friction member actuator (6), an electric motor (4), a controller (2), a main power supply (3), and an auxiliary power supply (22). The auxiliary supply (22) is charged with regenerative power from the motor (4). The controller (2) includes a backflow power interruption (26) preventing the main supply (3) from being charged with the regenerative power from the motor (4), and an auxiliary power supply controller (24) causing the auxiliary supply (22) to supply running power to the motor (4) when powering the electric (4) is started in a state in which the regenerative power in the auxiliary supply (22) is greater than or equal to a set voltage.

A brake control system for a vehicle includes a brake actuator operable over a range from an initial position that includes contiguous portions of displacement that are a first portion of displacement, a second portion of displacement and a third portion of displacement, a controller and an actuation sensor operatively coupled to the brake actuator. The actuation sensor sends a signal to the controller to activate a regenerative braking system using an electric motor of the vehicle if the actuation sensor detects the brake actuator is in the first portion of displacement. The regenerative braking system is activated and the friction braking system is activated when the brake actuator is in the second portion of displacement. The regenerative braking system is deactivated and the friction braking system is activated when the brake actuator is in the third portion of displacement.

A force-feedback brake pedal system for cooperative braking of an electric or hybrid vehicle having jointly a regenerative braking system and a frictional braking system includes a brake pedal which is pivotally mounted around a shaft or a bearing, an electronic circuitry which is in electrical communication with the regenerative braking system and the frictional braking system of the vehicle, an actuator for providing force feedback in accordance with the regenerative breaking and friction breaking of the vehicle, the actuator is in mechanical communication with the brake pedal. The force-feedback brake pedal system further includes a compliant element arranged between the brake pedal and the actuator, and a position sensor which, during operation, measuring the deflections of the compliant element and transmitting data to the electronic circuitry.

A braking control system includes braking control modules configured to generate a braking torque request signal, indicative of a requested braking torque value CFr, which is variable until reaching a target value Vt, and to supply the braking torque request signal to a braking means which converts it into a braking torque with effective braking torque value CFe. The braking control modules are configured to calculate a total difference of instantaneous braking torque CFt as the sum of the differences between the CFr values and the CFe values of all modules. If the calculated CFt is greater than zero when Vt is reached, the braking control modules increase the braking torque until a CFt subsequent to reaching Vt has a zero or negative value, or until the maximum available adhesion signal has indicated that a controlled axle has reached the maximum available adhesion.

A method for suppressing braking noise in a vehicle by a central server, methods for suppressing braking noise in a vehicle to be carried out in a vehicle, and an associated central server, an associated vehicle control module and an associated data storage medium are disclosed. The data processing is divided between the vehicle and the central server.

An electric brake system and a method for controlling the same are disclosed. The electric brake system includes a pedal sensor configured to sense a pedal effort, a calculator configured to calculate a target brake pressure based on the sensed pedal effort, a first hydraulic circuit configured to form a brake pressure of at least one rear wheel or form a rear-wheel regenerative braking pressure, a second hydraulic circuit configured to form a brake pressure of at least one front wheel, and a controller configured to perform rear-wheel regenerative braking during deceleration of a vehicle, perform cooperative control of a front-wheel hydraulic pressure when a rear-wheel regenerative braking pressure reaches a maximum regenerative braking pressure, increase the front-wheel hydraulic pressure to a target brake pressure when the rear-wheel regenerative braking is released, and then increase a rear-wheel hydraulic pressure.

An apparatus for controlling an ESC-integrated regenerative braking system that includes a pedal cylinder unit connected to a reservoir unit to generate a hydraulic pressure by pressing a brake pedal, a motor driven by an electrical signal output in response to a displacement of the brake pedal, a master cylinder unit connected to the pedal cylinder unit to form a hydraulic pressure for braking through a master piston moving by the driving of the motor, a control unit configured to detect a leakage of oil, based on a change in pressure in a hydraulic passage, during single-stage control, two-stage control, single-stage single-acting control, or two-stage single-acting control of the master cylinder unit, and a hydraulic control valve provided in a hydraulic passage for connecting the reservoir unit to a wheel cylinder to brake each wheel, to be opened and closed under control of the control unit.