This invention is characterized in being provided with: a determining unit for determining the execution of a state transition from a pressure increase mode in which an electric pump is operated with a differential valve being in a closed state and a holding valve being in an open state to a pressure decrease mode in which the electric pump is operated with the holding valve being in a closed state and the differential valve being in an open state; and a control unit for controlling, when the determining unit determines the execution of the state transition, one or more of the differential valve, the holding valve, a pressure reduction valve, and the electric pump, and reducing the amount of a braking fluid retained in a path between the differential valve and the holding valve.

A method for controlling a vehicle deceleration in a vehicle with an ABS brake system. The method includes detecting a target vehicle deceleration specified by a driver; defining a maximum deceleration and a minimum deceleration, each depending on the detected target vehicle deceleration; detecting an actual vehicle deceleration; and controlling a braking pressure on wheel brakes of a first vehicle axle and a second vehicle axle depending on the detected actual vehicle deceleration by actuation of ABS brake valves. Controlling the braking pressure by the actuation of the ABS brake valves comprises controlling the braking pressure on the wheel brakes of the second vehicle axle depending on a detected actual differential slip if the actual vehicle deceleration is less than the maximum deceleration and greater than the minimum deceleration, wherein the actual differential slip indicates the difference in a rotational behavior of the first vehicle axle.

An electric parking brake system according to one embodiment comprises: a first electric parking brake provided at a front wheel of a vehicle so as to generate a first clamping force; a second electric parking brake provided at a rear wheel of the vehicle so as to generate a second clamping force; an inclination sensor for detecting the inclination degree of the vehicle; and a control unit for determining the total clamping force required for parking on the basis of the inclination degree of the vehicle and vehicle weight information, determining the electric parking brake, to be operated, from among the electric parking brakes according to the determined total clamping force, and operating the determined electric parking brake.

An electric parking brake system according to one embodiment comprises: a first electric parking brake provided at a front wheel of a vehicle so as to generate a first clamping force; a second electric parking brake provided at a rear wheel of the vehicle so as to generate a second clamping force; an inclination sensor for detecting the inclination degree of the vehicle; and a control unit for determining the total clamping force required for parking on the basis of the inclination degree of the vehicle and vehicle weight information, determining the electric parking brake, to be operated, from among the electric parking brakes according to the determined total clamping force, and operating the determined electric parking brake.

A hydraulic brake system for a vehicle, including: a wheel brake device configured to generate a braking force based on a pressure of a working fluid; a first brake system including a high-pressure source device including an accumulator and a first pump device that is driven intermittently such that a pressure of the working fluid in the accumulator is not lower than a set lower limit pressure and not higher than a set upper limit pressure; a second brake system including a second pump device; and a main power source that supplies electricity to the first and second brake systems, wherein the hydraulic brake system includes an auxiliary power source that supplies electricity to the first brake system when a failure occurs in the main power source, and wherein the first pump device is continuously driven when the failure occurs irrespective of the pressure in the accumulator.

To provide a brake system for a saddled vehicle that exerts proper braking force control considering changes in the driver's posture during deceleration. A brake system for a saddled vehicle including a control device exerting automatic control over a brake fluid pressure of a front-wheel brake and that of a rear-wheel brake according to various information, and a throttle position detector for detecting a throttle position of a rotary-type throttle operating element mounted on a steering handlebar. When an operation on the throttle operating element is detected at start of automatic control over the front-wheel brake and the rear-wheel brake, if the throttle position is less than a predetermined threshold value, the control device maintains the automatic control, and if the throttle position is equal to or greater than the predetermined threshold value, the control device cancels the automatic control.

A vehicle travel control device includes a surrounding environment recognition device that acquires surrounding environment information on a surrounding environment of a vehicle; a vehicle state recognition device that acquires state information on a state of the vehicle; and a travel control unit that performs travel control of the vehicle, based on the surrounding environment information or the state information. When the vehicle state recognition device detects a slip of at least one drive wheel of the vehicle, the vehicle travel control device executes brake LSD control for braking the at least one drive wheel. When the surrounding environment recognition device recognizes snow on a traveling road of the vehicle and a snow melting area and a snow non-melting area ahead, the travel control unit switches an operation mode of the brake LSD control from a first mode to a second mode.

A vehicle travel control device includes a surrounding environment recognition device that acquires surrounding environment information on a surrounding environment of a vehicle; a vehicle state recognition device that acquires state information on a state of the vehicle; and a travel control unit that performs travel control of the vehicle, based on the surrounding environment information or the state information. When the vehicle state recognition device detects a slip of at least one drive wheel of the vehicle, the vehicle travel control device executes brake LSD control for braking the at least one drive wheel. When the surrounding environment recognition device recognizes snow on a traveling road of the vehicle and a snow melting area and a snow non-melting area ahead, the travel control unit switches an operation mode of the brake LSD control from a first mode to a second mode.

A method for controlling a machine during a transition from a service brake state to a parking brake includes receiving, by a control module, a request for activating a parking brake assembly. The method also includes transmitting, by the control module, control signals for activating a set of first brakes associated with a service brake assembly, a set of second brakes associated with the service brake assembly, and a clutch assembly. The method further includes controlling, by the control module, the set of first brakes for deactivating the set of first brakes. The method includes controlling, by the control module, the parking brake assembly for activating the parking brake assembly. The method also includes controlling, by the control module, the set of second brakes for deactivating the set of second brakes. The method further includes controlling, by the control module, the clutch assembly for deactivating the clutch assembly.

A method for controlling a machine during a transition from a service brake state to a parking brake includes receiving, by a control module, a request for activating a parking brake assembly. The method also includes transmitting, by the control module, control signals for activating a set of first brakes associated with a service brake assembly, a set of second brakes associated with the service brake assembly, and a clutch assembly. The method further includes controlling, by the control module, the set of first brakes for deactivating the set of first brakes. The method includes controlling, by the control module, the parking brake assembly for activating the parking brake assembly. The method also includes controlling, by the control module, the set of second brakes for deactivating the set of second brakes. The method further includes controlling, by the control module, the clutch assembly for deactivating the clutch assembly.