A brake system for hydraulically actuating a pair of front wheel brakes and a pair of rear wheel brakes includes master cylinder fluidly connected to a reservoir and operable to provide a brake signal responsive to actuation of a brake pedal connected thereto. The master cylinder is selectively operable in a manual push-through mode. First and second power transmission units are in fluid communication with the reservoir and selected front and rear wheel brakes. An electronic control unit selectively controls at least one of the first and second power transmission units. First and second two-position three-way valves are each hydraulically connected with a respective power transmission unit, the master cylinder, and a respective front wheel brake. The first and second two-position three-way valves are configured to place the master cylinder in push-through fluid-supplying connection with at least a corresponding one of the pair of front wheel brakes.

A vehicular pedal assembly includes a pedal housing with a mounting surface on a forward side for securement within a vehicle. A rotatable pedal has a proximal portion positioned in the pedal housing and a distal portion including a foot pad spaced from the pedal housing. The pedal is biased to a first limit position with respect to the pedal housing, and the distal portion is configured to be actuated from the first limit position in a forward direction. A friction system is provided for generating a resistance force against movement of the pedal toward and away from the first limit position. The friction system includes a friction lever having a friction pad, the friction lever being carried by the pedal and pivotable on the pedal to establish friction contact with a friction contact surface of the pedal housing.

A device for controlling a deceleration system of a vehicle includes an input port configured to receive a fluidic main deceleration request, and an output port configured to supply an electric deceleration demand to the deceleration system. The device is configured to generate the electric deceleration demand according to the fluidic main deceleration request. A deceleration system, a vehicle, a method and a computer product are also disclosed.

A vehicle brake system including: a pressurizing motor that is connected to a brake pedal and configured to increase a braking force that is generated; and a processor. The processor is configured with a program to perform operations including: operation as an information acquisition part to obtain information on whether a shift position of an automatic transmission is in a non-driving mode and information on operation on the brake pedal; and operation as a braking force controller to perform, when a predetermined retention condition is met, control of braking force so that a stationary state of a host vehicle is maintained. When the predetermined retention condition is met and the shift position is in the non-driving mode, the braking force controller is configured to perform control to increase the braking force that is generated using the pressurizing motor once the brake pedal is in a non-operated state.

A method adjusts a brake pedal characteristic of a vehicle having a brake pedal configured to generate a brake pedal deceleration demand and at least one further deceleration demand generating device to generate at least one further deceleration demand. The vehicle is configured to decelerate according to the brake pedal deceleration demand and to the at least one further deceleration demand. The method determines an achievable deceleration potential as a result of the further deceleration demand; generates a deceleration demand for adjusting the brake pedal deceleration demand at 0% brake pedal input according to the achievable deceleration potential; and adjusts the brake pedal characteristic of the vehicle.

The present disclosure relates to an apparatus for improving initial response through electro-mechanical brake (EMB) motor frequency excitation, including a microcontroller including a motor proportional-integral (PI) controller, a gate driver, and an FET inverter, wherein the microcontroller is configured to generate a high frequency signal and a low frequency signal, generate an input dithering signal by combining the high frequency signal and the low frequency signal, transfer the input dithering signal to the motor PI controller, and transfer an output signal of the motor PI controller to the inverter circuit, and the motor is controlled based on an output signal from the inverter circuit.

The electric brake device includes an electric motor, a friction member operator, a friction member, a brake rotor, and a control device. A braking force estimator provided in the control device includes: a direct estimator configured to convert output of a braking force sensor which detects a load or displacement corresponding amount, to a braking force; and an indirect estimator configured to estimate the braking force on the basis of information other than output of the braking force sensor. A range in which the braking force is estimated by the direct estimator is a specified low-braking-force range, and in a range beyond this range, estimation of the braking force is performed by the indirect estimator.

A brake system control unit for a vehicle having a hydraulic vehicle brake and electromechanical brake device comprises a microcontroller, a system ASIC and a brake motor ASIC, wherein the microcontroller is connected to the system ASIC and the brake motor ASIC via communication interfaces. In the brake motor ASIC, an interrogation signal sequence for interrogating the switched state of an actuation switch of the electromechanical brake device is generated.

A parking brake control apparatus 20 drives an electric motor 43B to advance a piston 39 according to an application request signal from a parking brake switch 19. The parking brake control apparatus 20 includes a running state detection portion that calculates a running state about whether a vehicle is running or stopped based on a wheel signal from a wheel speed sensor 18. When the running state cannot be calculated by the running state detection portion, the parking brake control apparatus 20 controls the electric motor 43B in such a manner that the thrust force of the piston 39 changes at a lower time rate of change than when the running state can be calculated.

A vehicle brake system including: a brake operation member to be operated by a driver; a brake device configured to generate a braking force in accordance with an operation of the brake operation member; an operation amount sensor configured to detect an operation amount of the brake operation member; and a controller configured to control the braking force generated by the brake device, wherein the controller determines whether the brake operation member is in an operating state or in a non-operating state and controls, based on the determination, the braking force, and wherein the controller determines that the brake operation member is in the operating state when the operation amount exceeds an operating-state determining threshold arid determines that the brake operation member is in the non-operating state when a time not less than a first set time elapses with the operation amount kept less than a non-operating-state determining threshold.