A method for controlling a maximum permissible pressure gradient of a power brake system of a motor vehicle. The method includes continuously calculating a maximum permissible pressure gradient, starting from a current motor speed gradient and motor speed of an external-force brake pressure generator, taking into account a predefined maximum permissible motor speed and a predefined maximum permissible motor speed gradient. In a next step, the maximum permissible pressure gradient is continuously transmitted to brake pressure demand units, so that, in the case of a braking event, the pressure gradient requested by the brake pressure demand units or resulting from a requested pressure is generally less than or equal to the maximum permissible pressure gradient.

The invention relates to a method for braking a vehicle (10) having a first (14) and a second (16) electric drive motor, wherein, in a first braking phase, a first target value for a braking torque is specified to the first electric drive motor (14), and a second target value for a braking torque is specified to the second electric drive motor (16), wherein a current speed of the vehicle (10) is sensed as the actual speed, wherein, when the actual speed reaches a first threshold value (v.sub.0) for a vehicle speed, the first target value for a braking torque is increased in a redistribution phase and the second target value for a braking torque is simultaneously reduced, wherein, when the actual speed reaches a second threshold value (v.sub.1) for a vehicle speed, the specification of the first target value for a braking torque is ended and a speed target value trajectory (202) is specified in a second braking phase, wherein the speed target trajectory proceeds from the second threshold value (v.sub.1) for the vehicle speed to a speed of zero.

Provided is a saddled vehicle capable of optimizing distribution of a braking force between front and rear wheels at the time of deceleration during linear traveling, before entering a corner, and in a similar situation. A saddled vehicle (1) includes: a front wheel braking component (32) that applies a braking force to a front wheel (WF); and a rear wheel braking component (34) that applies a braking force to a rear wheel (WR), and is configured to operate the front wheel braking component (32) and the rear wheel braking component (34) in an interlocking manner in response to an operation of an operating element (5) as a single operating element. In response to the operation of the operating element (5), the front wheel braking component (32) first starts operating, and thereafter, in response to a braking condition of the front wheel braking component (32) satisfying a first condition, the rear wheel braking component (34) starts operating. In response to satisfaction of the first condition, the braking force of the rear wheel braking component (34) is increased while the braking force of the front wheel braking component (32) is maintained at a first front-wheel-braking force (P1).

A braking system for a motorcycle may have at least (a) a first brake associated with a front wheel of the motorcycle, at least a first electro-hydraulic or electro-mechanical actuator, operatively connected to the first brake, (b) at least a first manual actuation command, associated with and corresponding to the at least one first brake, to send a braking request from a user, (c) at least a second brake associated with a rear wheel of the motorcycle, (d) at least a second electro-hydraulic or electro-mechanical actuator, operatively connected to the second brake, (e) at least a second manual actuation command, associated with and corresponding to the at least one second brake, to send a brake request from a user, and (f) a control unit operatively connected to the first manual actuation command, to the second manual actuation command and to the first and second electro-hydraulic or electro-mechanical actuators.

A fail-safe control method of an electromechanical brake apparatus comprising a plurality of wheel controllers, a main controller, and an auxiliary controller that control electromechanical brakes disposed on each wheel of a vehicle, the method comprising: deciding a self-status of each of the plurality of wheel controllers, the main controller, and the auxiliary controller based on pre-classified status information; sharing self-status decided by each of the plurality of wheel controllers, the main controller, and the auxiliary controller; determining a status of one another based on the shared self-status among the plurality of wheel controllers, the main controller, and the auxiliary controller; activating a pre-designated fail-safe mode based on status information of each of the plurality of wheel controllers, the main controller, and the auxiliary controller; and performing emergency braking of the vehicle based on the pre-designated fail-safe mode or maintaining the vehicle in a drivable status.

A fail-safe control method of an electromechanical brake apparatus comprising a plurality of wheel controllers, a main controller, and an auxiliary controller that control electromechanical brakes disposed on each wheel of a vehicle, the method comprising: deciding a self-status of each of the plurality of wheel controllers, the main controller, and the auxiliary controller based on pre-classified status information; sharing self-status decided by each of the plurality of wheel controllers, the main controller, and the auxiliary controller; determining a status of one another based on the shared self-status among the plurality of wheel controllers, the main controller, and the auxiliary controller; activating a pre-designated fail-safe mode based on status information of each of the plurality of wheel controllers, the main controller, and the auxiliary controller; and performing emergency braking of the vehicle based on the pre-designated fail-safe mode or maintaining the vehicle in a drivable status.

A method for controlling a braking system of a vehicle for the distribution of braking torques for service braking. The method may include receiving, by an electronic control unit, a request to apply a braking torque during a braking time interval. The method may also include enabling, in the braking time interval, by the electronic control unit a first and/or second electrical actuation signal of first and/or second brake calipers. Braking torques may be applied when the signals are enabled. For each instant of the braking time interval, an amplitude of the braking torque required for service braking is equal to the sum of a first amplitude of the first braking torque and a second amplitude of the second braking torque.

The present invention has a purpose of improving mountability of a brake system capable of performing slip control operation of a front wheel and a rear wheel to a motorcycle. The present invention further has a purpose of obtaining a motorcycle that includes such a brake system. In a front-wheel braking section (20), a friction force, which is applied to a front wheel (3) by a first friction application device (21), varies according to a hydraulic pressure of a brake fluid in a master cylinder (22) during service braking and varies by control of a hydraulic pressure adjustment mechanism (32, 33, 36, and the like) by a controller (60) during the slip control operation. In a rear-wheel braking section (40), a friction force, which is applied to a rear wheel (4) by a second friction application device (50), varies by control of an actuator (41) by the controller (60) during the service braking and during the slip control operation.

In a method for controlling a hydraulic brake system in a vehicle, wherein the hydraulic brake system is equipped with a hydraulic pump, the hydraulic pump is activated to hold the vehicle at rest and brake fluid is conveyed via open inlet valves to the wheel braking device of a first vehicle axle. The inlet valves on wheel braking devices of a second vehicle axle are at least partially open in response to a change in the brake pressure requirement in the brake system, and at the same time the outlet valves on said wheel braking devices remain closed while the vehicle is being held at rest.

In a method for controlling a hydraulic brake system in a vehicle, wherein the hydraulic brake system is equipped with a hydraulic pump, the hydraulic pump is activated to hold the vehicle at rest and brake fluid is conveyed via open inlet valves to the wheel braking device of a first vehicle axle. The inlet valves on wheel braking devices of a second vehicle axle are at least partially open in response to a change in the brake pressure requirement in the brake system, and at the same time the outlet valves on said wheel braking devices remain closed while the vehicle is being held at rest.