A fluidic control system (1) for controlling a vehicle, which includes a controller (2) and a closed fluidic circuit. The circuit includes a pump (3) for pressurizing fluid in the circuit, valve means (40, 50, 60), an actuator (4, 5, 6) and a precharge accumulator (7). The valve means (40, 50, 60) is fluidly connected to the inlet and outlet of the pump (3) and the actuator (4, 6) is fluidly connected to the valve means (40, 50, 60) for selectively receiving pressurized fluid therefrom. The precharge accumulator (7) includes a movable member (73, FIG. 2) that describes a variable volume (71) fluidly connected to the circuit between the valve means (40, 50, 60) and the inlet of the pump (3). The system (1) also includes a sensor (70) for determining the position of the movable member (73) for estimating the quantity of fluid and/or detecting an abnormal pressure variation within the circuit.

A fluidic control system (1) for controlling a vehicle, which includes a controller (2) and a closed fluidic circuit. The circuit includes a pump (3) for pressurizing fluid in the circuit, valve means (40, 50, 60), an actuator (4, 5, 6) and a precharge accumulator (7). The valve means (40, 50, 60) is fluidly connected to the inlet and outlet of the pump (3) and the actuator (4, 6) is fluidly connected to the valve means (40, 50, 60) for selectively receiving pressurized fluid therefrom. The precharge accumulator (7) includes a movable member (73, FIG. 2) that describes a variable volume (71) fluidly connected to the circuit between the valve means (40, 50, 60) and the inlet of the pump (3). The system (1) also includes a sensor (70) for determining the position of the movable member (73) for estimating the quantity of fluid and/or detecting an abnormal pressure variation within the circuit.

A method of brake management in a heavy vehicle is provided, and includes, in response to determining that a request for emergency braking is imminent, increasing an air pressure of e.g., a service brake system of the vehicle and decreasing an air pressure of e.g., a parking brake system of the vehicle. The method further includes, in response to actually receiving the request for emergency braking of the vehicle, performing an emergency braking of the vehicle by compounding both the service and parking brake systems, including further increasing the air pressure of the service brake system and further decreasing the air pressure of the parking brake system. A corresponding brake system controller, brake system, heavy vehicle, computer program and computer program product are also provided.

The invention obtains a controller and a control method capable of improving safety by an automatic deceleration operation while preventing a motorcycle from falling over. The invention also obtains a brake system that includes such a controller. In the controller, the control method, and the brake system according to the invention, a control mode is initiated in response to trigger information that is generated in accordance with peripheral environment of the motorcycle, and the control mode makes the motorcycle, which includes a damping device damping kinetic energy, execute the automatic deceleration operation. In the control mode, the automatic deceleration operation is executed in a state where a damping rate of the damping device is increased to be higher than that immediately before initiation of the control mode.

The present disclosure obtains a hydraulic pressure control unit capable of appropriately diagnosing presence or absence of fixation of an electromagnetic valve. In the hydraulic pressure control unit according to the present disclosure, a controller includes: an acquisition section that acquires a current value of a current flowing through a coil of the electromagnetic valve in a hydraulic pressure control mechanism; and a diagnosis section that determines whether the current value has exhibited behavior of being temporarily reduced in a process in which the current value is increased at initiation of applying the current to the coil of the electromagnetic valve, so as to diagnose the presence or the absence of the fixation of the electromagnetic valve.

A hydraulic vehicle brake system having at least one brake pedal, a pedal-travel simulator, at least one hydraulically operable wheel-brake unit and a switching valve between the brake pedal and the pedal-travel simulator. The switching valve is adjustable between a first switching position, in which the brake pedal is connected to the pedal-travel simulator and decoupled from the wheel-brake unit, and a second switching position, in which the brake pedal is decoupled from the pedal-travel simulator and the brake pedal is connected to the wheel-brake unit. In the first switching position, a pressure-supply unit is connected at the same time to the wheel-brake unit.

A fluidic control system (1) for controlling a vehicle, which includes a controller (2) and a closed fluidic circuit. The circuit includes a pump (3) for pressurizing fluid in the circuit, valve means (40, 50, 60), an actuator (4, 5, 6) and a precharge accumulator (7). The valve means (40, 50, 60) is fluidly connected to the inlet and outlet of the pump (3) and the actuator (4, 6) is fluidly connected to the valve means (40, 50, 60) for selectively receiving pressurized fluid therefrom. The precharge accumulator (7) includes a movable member (73, FIG. 2) that describes a variable volume (71) fluidly connected to the circuit between the valve means (40, 50, 60) and the inlet of the pump (3). The system (1) also includes a sensor (70) for determining the position of the movable member (73) for estimating the quantity of fluid and/or detecting an abnormal pressure variation within the circuit.

The invention obtains a controller and a control method capable of improving safety by an automatic deceleration operation while preventing a motorcycle from falling over. The invention also obtains a brake system that includes such a controller.

In the controller, the control method, and the brake system according to the invention, a control mode is initiated in response to trigger information that is generated in accordance with peripheral environment of the motorcycle, and the control mode makes the motorcycle, which includes a damping device damping kinetic energy, execute the automatic deceleration operation. In the control mode, the automatic deceleration operation is executed in a state where a damping rate of the damping device is increased to be higher than that immediately before initiation of the control mode.

A brake fluid pressure control unit that can improve cost performance of a brake system is obtained. A brake system that includes such a brake fluid pressure control unit and a motorcycle are also obtained. A brake fluid pressure control unit 50 includes: an inlet valve 21 provided in a primary channel 14; an outlet valve 22 provided in a secondary channel 15; a pressurizing/transferring mechanism 25 provided on a downstream side of the outlet valve 22 in the secondary channel 15 and pressurizing and transferring a brake fluid in the secondary channel 15; and a controller 51 for executing a fluid pressure control operation of the brake fluid in a wheel cylinder 13, and a power source of the pressurizing/transferring mechanism 25 is a drive mechanism 103 of the motorcycle 100, the drive mechanism 103 being driven in a state where the fluid pressure control operation by the controller 51 is not executed.

The present disclosure obtains a hydraulic pressure control unit capable of appropriately diagnosing presence or absence of fixation of an electromagnetic valve. In the hydraulic pressure control unit according to the present disclosure, a controller includes: an acquisition section that acquires a current value of a current flowing through a coil of the electromagnetic valve in a hydraulic pressure control mechanism; and a diagnosis section that determines whether the current value has exhibited behavior of being temporarily reduced in a process in which the current value is increased at initiation of applying the current to the coil of the electromagnetic valve, so as to diagnose the presence or the absence of the fixation of the electromagnetic valve.