A filter device collects and stores brake particles generated by a friction brake. The filter device can be regenerated. The filter device determines that at least one boundary condition that makes it possible and/or permits the execution of regeneration of the filter device is met. In response to the determination, brake particles stored in the filter device are to be removed from the filter device.

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 hydraulic apparatus comprising a casing (1) having arranged therein a hydraulic machine (2), a shaft (4) mounted to rotate relative to the casing (1) by means of a bearing (5), a braking system (3) having a plurality of brake disks (31, 34) configured to prevent the shaft (4) rotating relative to the casing (1) in selective manner, and a control system (6, 7) for controlling said braking disks (31, 34), the hydraulic system including an irrigation system adapted to cool said brake disks (31, 34) by means of a fluid, the irrigation system including a fluid inlet (81) and a fluid outlet (82), the hydraulic system being characterized in that the fluid inlet and outlet (81, 82) of the irrigation system define a fluid flow within the casing in which the braking system (3) is downstream from the hydraulic machine (2).

A relief valve in a hydraulic system in a machine selectively sends pressurized oil to both a brake cooling apparatus and a cylinder used to hoist a load. A relief valve lowers pressure spikes in a brake cooling line by dumping fluid in a brake cooling line to tank responsive to a pressure spikes at the head end of the cylinder during hoisting or other transitions in the hydraulic system. Reducing the pressure spikes in the brake cooling line improves reliability of the brake cooling apparatus by protecting seals from undue stresses.

A brake cooling system, comprising a pressurized air source configured to supply compressed air. A flow passage extends from the pressurized air source to a vicinity of a brake assembly, and has an outlet directing the air towards the brake assembly. At least one de Laval nozzle is provided in the flow passage to increase speed and reduce temperature of air passed through the de Laval nozzle. A valve controls fluid communication between the air source and the de Laval nozzle. When the valve is closed, air is prevented from reaching the de Laval nozzle. When the valve is open, air is allowed to pass through the de Laval nozzle. A temperature sensor senses the temperature of a brake assembly. If the temperature is above a predefined limit, the valve becomes opened, and air is passed through one or series of de Laval nozzle and to the brake assembly.

A drive unit for a vehicle, having an electric motor and a transmission unit, wherein the electric motor is connected to the transmission unit via a drive shaft and at least one first output shaft can be driven to rotate by the transmission unit, wherein the drive unit also has at least one brake unit. The rotation of the at least one output shaft can be delayed by the brake unit, wherein the drive unit has at least one of the following: a lubricant circuit through which both the transmission unit and at least one brake unit can be supplied with lubricant, and a cooling circuit through which both (i) at least one of the electric motor and a power electronics system assigned to the electric motor; and (ii) at least one brake assembly can be supplied with coolant.

Methods for estimating the cooling time of a brake assembly are disclosed. Methods are provided comprising receiving, by the processor, a first temperature of a brake assembly at a first time, receiving, by the processor, a second temperature of a brake assembly at a second time, wherein the second time occurs a fixed period after the first time, determining, by the processor, a temperature decay coefficient () of the brake assembly based on the first temperature and the second temperature and calculating, by the processor, an estimated total time to cool the brake assembly to a predetermined temperature based on the first temperature, the predetermined temperature and .

A brake cooling system for a heavy-duty truck includes an air compressor mounted on a truck-cab chassis that is in fluid communication with a pressurized air reservoir. The reservoir outlet includes an automatic solenoid valve that establishes select communication between the reservoir and an air distribution system. The air distribution system is formed of a network of compressed air tubes having arteries that each extend to a designated brake drum. Whenever the vehicle is traveling above a predetermined speed and the brake pedal is applied, a microprocessor opens the solenoid to deliver cooling air to each brake drum.

A cooling-fan control device for a vehicle that increases the cooling capacity of a cooling oil that cools a brake rapidly and inhibits a brake damage in a case where the brake is applied during traveling or, in addition to the above-described problem-to-be-resolved, suppresses engine horsepower consumption and avoids consumption increase, while increasing the cooling capacity of the brake cooling oil. The rotation speed of the cooling fan is controlled to obtain the higher target rotation speed of a first target rotation speed corresponding to a detected cooling oil temperature and a second target rotation speed corresponding to a detected brake operation amount. The present invention is applicable to a vehicle in which an engine power is distributed to a travel power train and a hydraulic pump, drive wheels are operated via the travel power train, and the cooling fan is actuated via the hydraulic pump.

In some examples, a cooling system defines a first flow path for a first gas stream and a second flow path for a second gas stream. The cooling system is configured to merge the first gas stream and the second gas stream to produce a mixed gas stream and provide the mixed gas stream to cool a brake assembly of a wheel. Control circuitry is configured to adjust a flow rate of the second gas stream based on a pressure and/or other flow parameter of the first gas stream. In examples, the control circuitry is configured to initiate and/or substantially cease cooling to the brake assembly based on a temperature signal indicative of a temperature of the brake assembly.