Abstract: It is an object of the invention to provide a brake device capable of detecting a failure in each of components, by which booster control is performed, at an early stage even during vehicle running. The brake device is configured to discharge brake fluid into a communicating fluid path that connects a fluid path of a primary system and a fluid path of a secondary system, and to control a first communicating valve for restricting a flow of brake fluid from the communicating fluid path to the fluid path of the primary system and a second communicating valve for restricting a flow of brake fluid from the communicating fluid path to the fluid path of the secondary system in respective valve-closing directions, so as to check at least a state of the pump.

Abstract: To provide a brake control apparatus that brings a brake operating member to a proper position during antilock control. At least during operation of an antilock controller 105, valves 23 and 24 are actuated to impart a stroke to a piston 52P with hydraulic pressure generated by the pump 7.

Abstract: There is provided a brake apparatus configured to identify a fluid leak spot while generating a braking force. The brake apparatus is configured to drive pump 7 to supply a brake fluid to a first fluid passage (fluid passage 11P, discharge passage 13P) and a second fluid passage (fluid passage 11S, discharge passage 13S), switch communicating valves 23P and 23S alternately between open and closed positions more than once, and detect a brake-fluid leakage in the first or second fluid passage on the basis of magnitudes of detection values detected by hydraulic-pressure sensors 92P and 92S during the open-close switching.

Abstract: The present invention provides a brake device that can improve the pressure-increasing response of wheel cylinder hydraulic pressure. The invention is provided with: a master cylinder (5) actuated by the driver operating the brake, the master cylinder (5) being connected to a wheel cylinder (8) via a first oil channel (11), and capable of increasing the wheel cylinder hydraulic pressure; and an auxiliary pressure-increasing part (auxiliary pressure-increasing part (106) and stroke simulator (27)) for assisting in the increasing of the wheel cylinder hydraulic pressure by the master cylinder (5) of the pump (7).

Abstract: It is an object of the invention to provide a brake device capable of detecting a failure in each of components, by which booster control is performed, at an early stage even during vehicle running. The brake device is configured to discharge brake fluid into a communicating fluid path that connects a fluid path of a primary system and a fluid path of a secondary system, and to control a first communicating valve for restricting a flow of brake fluid from the communicating fluid path to the fluid path of the primary system and a second communicating valve for restricting a flow of brake fluid from the communicating fluid path to the fluid path of the secondary system in respective valve-closing directions, so as to check at least a state of the pump.

Abstract: A brake device used in a vehicle employing a regenerative braking device for applying an electric braking force to road wheels, is provided with a first pump for sucking brake fluid from a master cylinder for generating a brake fluid pressure by a brake operation of the driver and for increasing a wheel-cylinder fluid pressure of a front-wheel system so as to generate a braking force, and a second pump for sucking the brake fluid from a reservoir, and for increasing a wheel-cylinder fluid pressure of a rear-wheel system so as to generate a braking force. Also provided is a brake control unit for calculating a distribution amount among the braking forces respectively produced by the first pump, the second pump, and the regenerative braking device in order to generate a required braking force depending on the brake operation by the driver.

Abstract: A control apparatus for a vehicle, comprising a control unit having: a resultant acceleration information calculating section (100c) configured to calculate a resultant acceleration which is a synthesis of two direction accelerations acted upon the vehicle; a resultant jerk calculating section (100c2) configured to calculate a resultant jerk of at least one of change rates of the two directional accelerations with respect to time and a change rate of the resultant acceleration with respect to time; and a rollover tendency determining section (100e) configured to determine a tendency of rollover of the vehicle using at least one of the calculated resultant acceleration and the calculated resultant jerk.

Abstract: A brake control apparatus used for a vehicle having a regenerative braking system has a brake circuit connecting a master cylinder and a wheel cylinder; a pump; a gate-out valve; a reservoir capable of storing a brake fluid that flows out from the master cylinder; and a control unit. The control unit has a brake fluid storage controlling section that stores the brake fluid flowing out from the master cylinder in the reservoir; a pressure increase controlling section that controls the gate-out valve in a valve closing direction and supplies the brake fluid stored in the reservoir to the wheel cylinder by the pump then increases the wheel cylinder pressure; and a pressure decrease controlling section that, when the regenerative braking system operates, pours the brake fluid supplied to and pressurized in the wheel cylinder into the reservoir through the pump then decreases the wheel cylinder pressure.

Abstract: A brake control system of a motorcycle is provided which can suppress a malfunction of an anti-lock braking system applied to a rear wheel which would be caused by an abnormal speed difference between the front and rear wheels. A threshold value for a skid rate for the rear wheel is kept to a second skid rate threshold value until a time when a predetermined condition is established. The second skid rate threshold value is larger than a first skid rate threshold value that is usually employed.

Abstract: A control apparatus for a vehicle, comprising a control unit having: a resultant acceleration information calculating section (100c) configured to calculate a resultant acceleration which is a synthesis of two direction accelerations acted upon the vehicle; a resultant jerk calculating section (100c2) configured to calculate a resultant jerk of at least one of change rates of the two directional accelerations with respect to time and a change rate of the resultant acceleration with respect to time; and a rollover tendency determining section (100e) configured to determine a tendency of rollover of the vehicle using at least one of the calculated resultant acceleration and the calculated resultant jerk.

Abstract: A brake control system of a motorcycle is provided which can suppress a malfunction of an anti-lock braking system applied to a rear wheel which would be caused by an abnormal speed difference between the front and rear wheels. A threshold value for a skid rate for the rear wheel is kept to a second skid rate threshold value until a time when a predetermined condition is established. The second skid rate threshold value is larger than a first skid rate threshold value that is usually employed.