A system for use in connection with a wheel torque generating component in a heavy-duty vehicle. The system comprises a fluid conduit, a compressor configured to provide a pressurized air flow through the fluid conduit, a mass flow adding arrangement configured to add a fluid to the pressurized air flow in the fluid conduit, thereby increasing the mass flow of the pressurized air flow, and a flow directing device arranged downstream of the mass flow adding arrangement and configured to direct the pressurized air flow, including the added fluid, from the fluid conduit to the wheel torque generating component so as to control the temperature of the wheel torque generating component. The invention also relates to a method for use in connection with a wheel torque generating component in a heavy-duty vehicle.

A system for use in connection with a wheel torque generating component in a heavy-duty vehicle, comprising a fluid conduit, a flow creating device configured to provide a pressurized air flow through the fluid conduit, a flow directing device enabling the pressurized air flow to be directed from the fluid conduit to the wheel torque generating component so as to control the temperature of the wheel torque generating component, and a control unit configured to compare a determined first temperature of the pressurized air flow with a determined second temperature of the wheel torque generating component, wherein the control unit is configured to, based on the comparison of the first temperature and the second temperature, selectively control the flow directing device to direct the pressurized air flow to the wheel torque generating component. The invention also relates to a method.

The invention relates to a braking system (1) including: a dynamic brake (10), including a hydraulic ram (11), including a cylinder (12), a piston (13) movable in the cylinder (12), and a chamber (14) capable of being filled to displace the piston within the cylinder and actuate the brake, a circuit (20) for feeding the brake, including a reservoir (21) a pump (22) and a brake feed line (26),
a brake control device (30), including a fluid pressure regulating valve (32) in the brake chamber, and progressive control (31), the valve including a path connected to the feed line, a path connected to the reservoir, and a path connected to the brake chamber, and being designed to selectively connect the path connected to the chamber to one or the other of the other paths, to deliver a predetermined pressure into the chamber according to a degree of actuation of the control,
the braking system being characterized in that it further includes a chamber cooling line (40), designed to renew the fluid contained in the chamber to ensure cooling of said chamber.

A brake cooling system uses a pair of subsystems to efficiently provide brake cooling and operation of the system. A first subsystem uses an axle assembly to drive one or more pumps to drive a variable speed cooling flow pump motor and a variable speed fan motor. A second subsystem includes one or more cooling flow pumps that are driven by variable speed cooling flow pump motor to supply a cooling fluid to an air-fluid heat exchanger for cooling and then supply the cooled fluid from the heat exchanger to brakes of the axle assembly. The variable speed fan motor drives a fan for the air-fluid heat exchanger for cooling of fluid passing therethrough. The system also includes a means for controlling the speed of the motors to regulate the heat exchanger operation and cooling flow through the heat exchanger and brakes of the axle assembly.

A system for retarding a railcar having wheels. The system includes a brake and an actuator that moves the brake between a closed position in which the brake contacts the wheels of the railcar and an open position in which the brake does not contact the wheels of the railcar. The system further includes a hydraulic circuit through which a hydraulic fluid flows between the actuator and a reservoir. A first pump is operably connected within the hydraulic circuit and configured to provide the hydraulic fluid to the actuator for operating the brake. A heat exchanger is operably connected within the hydraulic circuit and configured to cool the hydraulic fluid flowing therethrough. A second pump is operably connected within the hydraulic circuit and configured to provide the hydraulic fluid to the heat exchanger. The heat exchanger prevents the hydraulic fluid within the hydraulic fluid from exceeding a target operating temperature.

A brake cooling system uses a pair of subsystems to efficiently provide brake cooling and operation of the system. A first subsystem uses an axle assembly to drive one or more pumps to drive a variable speed cooling flow pump motor and a variable speed fan motor. A second subsystem includes one or more cooling flow pumps that are driven by variable speed cooling flow pump motor to supply a cooling fluid to an air-fluid heat exchanger for cooling and then supply the cooled fluid from the heat exchanger to brakes of the axle assembly. The variable speed fan motor drives a fan for the air-fluid heat exchanger for cooling of fluid passing therethrough. The system also includes a means for controlling the speed of the motors to regulate the heat exchanger operation and cooling flow through the heat exchanger and brakes of the axle assembly.

A brake sphere apparatus of a spherical braking system is mounted on the axle or drive shaft of a vehicle. A brake sphere is connected to a wheel hub and rotates simultaneously together with the wheel hub. A housing contains the brake sphere, two brake pads on opposing sides of the brake sphere, and two hydraulic shafts respectively driving the two brake pads. Two hydraulic lines are connected to the two hydraulic shafts through the housing, the two hydraulic shafts press the two brake pads against the brake sphere when pressure is applied through the two hydraulic lines. Cooling is provided to cool the brake sphere when torque is applied to said brake sphere to decrease simultaneous rotation of the brake sphere and wheel hub.

An oil supply system for an automatic transmission or for an automated manual transmission in a drive train. The oil supply system includes an oil sump and a heat exchanger, wherein the oil supply is provided for at least the following operating states of the automatic transmission: a converter mode; a drive mode in one of the mechanical gears; and a retarder mode.
To optimize cooling of the oil volume flows in the different operating states two heat exchangers are provided, through which an oil volume flow can be conducted depending on the operating state of the transmission.

A braking system of an industrial vehicle includes an accumulator accumulating hydraulic oil, a hydraulic oil cooler cooling the hydraulic oil, an electromagnetic switch valve switching between an oil channel for the accumulator that allows supplying the hydraulic oil from a hydraulic pump to the accumulator and an oil channel for the hydraulic cooler that allows supplying the hydraulic oil from the hydraulic pump to the hydraulic oil cooler, and a controller controlling the electromagnetic switch valve to switch from the oil channel for the hydraulic cooler to the oil channel for the accumulator with timing of an increase after a drop in an engine speed when a cargo-handling operation is detected while an oil is at a setting pressure value or less and while the engine speed is at a setting engine speed or less.

The flywheel device includes a sealed housing section; a rotor located in the sealed housing section where the rotor is held in a vertical position by a magnetic system; a controller coupled to the magnetic system; and a braking annular ring mounted to the sealed housing section below the rotor, where the rotor contacts the braking annular ring when the rotor is lowered or otherwise dropped from the vertical position. The controller perform operations to provide control signals to provide first power to the magnetic system to hold the rotor in the vertical position and provide second control signals to provide second power to the magnetic system to lower the rotor.