The invention obtains a hydraulic brake system, installability of which in a bicycle is improved. The invention also obtains a bicycle that includes such a hydraulic brake system. The invention further obtains a method for controlling such a hydraulic brake system.

A hydraulic brake system 100 includes a hydraulic pressure controller 100 and a power supply unit 150 of the hydraulic pressure controller 100, the hydraulic pressure controller 100 including: a base section that is formed with a channel, through which a brake fluid flows, therein; a valve that is attached to the base section and opens and closes the channel; and a control section that governs an opening/closing operation of the valve and controlling hydraulic pressure of the brake fluid that is supplied to a wheel braking section of the bicycle. The power supply unit 150 includes a generator 151 that generates electric power by traveling of a bicycle 200.

A method for braking a vehicle which is operable by a motor or by muscular power, in particular an electric bicycle. During a braking operation, a brake force influencing device is controlled by an electric brake pressure control device, and the brake pressure for the front wheel brake and/or for the rear wheel brake, and thus the brake force thereof, is increased and/or decreased. The brake pressure control device receives brake pressure signals in each case from a brake actuation detector for the front wheel brake and for the rear wheel brake, and an improved distribution of a total brake force on the front wheel and the rear wheel is effectuated which differs from the distribution that is effectuated by the driver.

The braking system includes a first and a second braking actuators associated with wheels of a respective axle or a respective bogie of a railway vehicle and to which there are connected a first electro-pneumatic control assembly and a second electro-pneumatic control assembly respectively, each comprising a charging solenoid valve and a discharging solenoid valve adapted to cause an increase and a reduction, respectively, of a pneumatic pressure supplied to the corresponding braking actuators, and a control unit arranged to control the electro-pneumatic control assemblies as a function of a target braking pressure, so that the assemblies cause the application of respective pressures to the corresponding braking actuators.

A hydraulic pressure control unit capable of suppressing application of an external force thereto in comparison with the related art at the time when mounted to a straddle-type vehicle is obtained. A hydraulic pressure control unit (1) includes: a base body (10) formed with an internal channel through which a brake fluid flows; an inlet valve and an outlet valve that open/close the internal channel during anti-lock brake control; a first coil (61) as a drive source of the inlet valve; a second coil as a drive source of the outlet valve; and a circuit board (36) that is electrically connected to the first coil (61) and a second coil and controls energization of the first coil (61) and the second coil. The base body (10) is held to a front fork (216). When the straddle-type vehicle to which the hydraulic pressure control unit (1) is mounted is seen in a front view, the circuit board (36) is located behind the front fork (216) and the base body (10), and the first coil (61) and the second coil are erected from a rear surface of the base body (10).

A hydraulic pressure control unit capable of suppressing application of an external force thereto in comparison with the related art at the time when mounted to a straddle-type vehicle is obtained. A hydraulic pressure control unit (1) includes: a base body (10) formed with an internal channel through which a brake fluid flows; an inlet valve and an outlet valve that open/close the internal channel during anti-lock brake control; a first coil (61) as a drive source of the inlet valve; a second coil as a drive source of the outlet valve; and a circuit board (36) that is electrically connected to the first coil (61) and a second coil and controls energization of the first coil (61) and the second coil. The base body (10) is held to a front fork (216). When the straddle-type vehicle to which the hydraulic pressure control unit (1) is mounted is seen in a front view, the circuit board (36) is located behind the front fork (216) and the base body (10), and the first coil (61) and the second coil are erected from a rear surface of the base body (10).

An electromechanical actuator for use in a hydraulic braking circuit of a vehicle comprises an electric motor having a stator and a rotor, and a linear actuator that is located within the motor. The linear actuator comprises an elongate shaft having a screw part at one end carrying an external thread that extends along a portion of the shaft, and a fixing part at the other end shaft, the linear actuator further comprising a drive nut that surrounds the screw part of the shaft and is located at least in a retracted position inside an enlarged bore of the first portion of the rotor body, the drive nut being connected to the screw part through a set of balls that engage the threads of the drive nut and screw part, and the fixing part of the shaft includes a tapering portion that engages a complimentary tapering portion of the bore in the second portion of the rotor body.

A method for regulating motor vehicle electrohydraulic brake systems having a pressure supply apparatus actuated by a control unit and hydraulically connected to wheel brakes via a pressure regulating valve. The pressure supply apparatus includes a cylinder-piston assembly operated by an electromechanical actuator. A set point pressure value is determined for each wheel brake. The cylinder-piston assembly is actuated to a predetermined pilot pressure in the hydraulic pressure chamber. A pilot pressure actual value and an actuator speed actual value are obtained. A pilot pressure set point value, the pilot pressure set point value and the pilot pressure actual value are fed as input variables to a regulator which outputs an actuator speed set point value. The actuator speed and actual set point values are fed as inputs to the speed regulator. The actuator speed set point value is modified as a function of the number of brakes.

A brake hydraulic pressure control device (2) controls a fluid pressure of a brake fluid supplied to wheel cylinders mounted on brake calipers (107, 114) of a motorcycle (100). The brake hydraulic pressure control device (2) includes: a base body in which flow passages are formed; and valves which open or close the flow passages. The base body is fixed below a spring in connecting portions (130A, 130B) which connect a trunk portion (101) of the motorcycle (100) and a wheels (front wheel (106), rear wheel (113)) to each other.

An electric braking device generates a braking force at a wheel via application of a pressing force by a piston by linear motion of the piston in response to the transmission of a forward-direction rotational torque from an electric motor to a linear motion conversion mechanism. The electric braking device is provided with a one-way clutch that cuts off the transmission of a rotational torque between the electric motor and the linear motion conversion mechanism when applied with a rotational torque in a direction opposite to the forward direction and having a magnitude equal to or greater than a predetermined value.

The present invention is a distributed piston elastomeric accumulator which stores energy when its elastomeric member stretches from its original length in response to the flow of a pressurized fluid. The stored energy is returned when the fluid flow is reversed and the accumulator discharges the fluid as its elastomeric member returns to its original length and moves the piston to its initial position. At least one part of the novelty of the invention is that the accumulator is not subject to radial strain gradients and the accumulator allows for precise pressure and linear position measurements. Accordingly, the invention allows for optimization of the energy strain storage capacity of a given elastomer.