Abstract: A braking arrangement for a vehicle, the braking arrangement comprising an electric machine electrically connectable to an electric power source, a brake compressor positioned in an air flow conduit, the brake compressor being configured to pressurize a flow of air and to exhaust the pressurized flow of air, and a compressor shaft mechanically connecting the electric machine and the brake compressor to each other, wherein the electric machine is configured to generate a torque on the compressor shaft for operating the brake compressor to pressurize the flow of air, the braking arrangement further comprising an air bearing arrangement, the air bearing arrangement being fluidly connectable to a pressurized brake air tank of the vehicle via an air bearing conduit, wherein the air bearing arrangement is suspending the compressor shaft to at least one of the electric machine and the brake compressor.

Abstract: A material transportation system for a working machine is provided. The material transportation system comprises a load implement body with a plurality of air flow channels. The air flow channels comprise a set of heat insulated air flow channels, and a set of heat transfer channels, wherein each air flow channel of the set of heat insulated air flow channels comprises a heat insulating structure. When the temperature level of the load implement body is below a predetermined threshold limit, pressurized air is directed to the set of heat transfer channels.

Abstract: A system for a vehicle, having a fuel cell system and a compressed air system for supplying compressed air to a pneumatic device is provided. The fuel cell system includes: a fuel cell having an anode side and a cathode side, an outlet conduit connected to an outlet end of the cathode side, an air inlet conduit connected to an inlet end of the cathode side for supply of air to the cathode side of the fuel cell. An air compressor is disposed in the air inlet conduit, an air filter receives air from an ambient environment. Their filter is arranged at an inlet of the air inlet conduit. The compressed air system includes an electrically operable air compressor connectable to the pneumatic device in fluid communication with the compressor. An air inlet of the compressor is connected to the outlet conduit at a selected position, whereby the compressor receives exhaust air from the cathode side of the at least one fuel cell.

Abstract: The present invention relates to a braking arrangement for a vehicle, the braking arrangement comprising an electric machine electrically connectable to an electric power source, a brake compressor positioned in an air flow conduit, the brake compressor being configured to pressurize a flow of air and to exhaust the pressurized flow of air, and a compressor shaft mechanically connecting the electric machine and the brake compressor to each other, wherein the electric machine is configured to generate a torque on the compressor shaft for operating the brake compressor to pressurize the flow of air, the braking arrangement further comprising an air bearing arrangement, the air bearing arrangement being fluidly connectable to a pressurized brake air tank of the vehicle via an air bearing conduit, wherein the air bearing arrangement is suspending the compressor shaft to at least one of the electric machine and the brake compressor.

Abstract: A braking system for a vehicle. Based on an electric power level of electric power generated during regenerative braking of the vehicle, an electric power system of the vehicle is controlled to supply electric power to an electric machine, which electric machine is connected to an air blower arranged in an air conduit.

Abstract: 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.

Abstract: An energy management system, comprising an electric machine electrically connected to an electric source, an air compressor arranged in an air flow channel of the thermal management system, the air compressor being configured to receive and pressurize air, wherein the air compressor is mechanically connected to, and operable by, the electric machine, an air heating arrangement positioned in the air flow channel in fluid communication with the air compressor, wherein the air heating arrangement is arranged to heat air present in the air flow channel, and a flow injecting arrangement positioned downstream the air compressor in the air flow channel, wherein the flow injecting arrangement comprises a portion configured to admit a flow of fluid into the flow of air exhausted from the air compressor.

Abstract: A cooling system for a vehicle propelled by an electric machine. The cooling system is arranged, when the vehicle is operated in a braking mode, to control a first and a second radiator valve to direct a flow of fluid from a radiator through a first fluid circuit and prevent the flow of fluid from the radiator to enter the second fluid circuit, control a compressor arrangement to flow a refrigerant in a direction from a heat exchanger to a condenser of a third fluid conduit, and control a second circuit valve arrangement to direct a heat source fluid to circulate through a heat exchanger and an electric heat source.

Abstract: A braking system for a vehicle at least partially propelled by an electric traction motor electrically connected to an electric power system. The braking system comprises an electric machine configured to be electrically connected to the electric power system, the electric machine comprising a first output shaft and a second output shaft, an air blower controllably connected to the first output shaft by a clutch, the clutch being controllable between an open position in which no power is transmitted from the electric machine to the air blower, and a closed position in which power is transmitted from the electric machine to the air blower, and a fluid pump operatively connected to the electric machine via the second output shaft, wherein the fluid pump is arranged in upstream fluid communication with a fluidly operated member and in downstream fluid communication with a fluid tank.

Abstract: A system for a vehicle, having a fuel cell system and a compressed air system for supplying compressed air to a pneumatic device. The fuel cell system includes at least one fuel cell having a cathode side, an air inlet conduit connected to an inlet end of the cathode side, an air compressor disposed in the air inlet conduit, an air filter arranged to receive air from an ambient environment. The air filter is arranged at an inlet of the air inlet conduit. A a fluid outlet conduit is connected between an outlet end of the cathode side and an inlet side of an expander, and an exhaust conduit is connected to an exhaust side of the expander. The compressed air system comprising: an electrically operable air compressor connectable to the pneumatic device. A controllable valve assembly fluidly connects an air inlet of the compressor to multiple fluid supply positions.

Abstract: A fuel cell system is for a vehicle at least partially propelled by an electric traction motor. The fuel cell system includes a fuel cell comprising an anode side and a cathode side, an expander connected to a fuel cell motor, an inlet conduit connected to an inlet end of the cathode side for supply of air to the cathode side, an outlet conduit connected between an outlet end of the cathode side and an inlet side of the expander for supply of an exhaust flow from the cathode side to the expander, and an exhaust conduit connected to an exhaust side of the expander, and a heat exchanger connected at the inlet conduit and at the exhaust conduit for transfer of heat between the inlet conduit and the exhaust conduit.

Abstract: An electric energy dissipating system for a vehicle. The system includes an electric power system configured to be electrically connected to an electric traction motor of the vehicle and configured to receive and store electric power generated by the electric traction motor during braking, a fluid conduit, an air flow producing unit configured to provide a pressurized air flow through the fluid conduit, an electric machine, and a transmission arrangement. The electric machine is configured to be powered by the electric power system so as to drive the air flow producing unit via the transmission arrangement in order to dissipate energy from the electric machine. The transmission arrangement includes a first shaft and a second shaft. The first shaft is driven by the electric machine and the second shaft drives the air flow producing unit. The second shaft rotates at higher speed than the first shaft.

Abstract: A computer implemented method for controlling energy or power utilization of a battery pack in a rechargeable energy storage system is described. The battery pack is configured to be operated within an operating window defined by its state-of-charge, SOC, according to normal predetermined SOC limits, and extended predetermined SOC limits. The method includes determining a battery pack condition level; comparing the battery pack condition level with a first threshold; providing predicted energy or power utilization of the battery pack; comparing the predicted energy or power utilization with a second threshold. In response of determining that the predicted energy or power utilization is above the second threshold, and that the battery pack condition level is below the first threshold, operating the battery pack within the operating window defined by the extended predetermined SOC limits.

Abstract: A method for controlling a power assembly comprising a fuel cell unit and an electric energy storage system. The method includes predicting a power demand for power delivery from the power assembly over a prediction horizon, calculating costs associated with controlling the power assembly according to at least two different control scenarios during the prediction horizon: a first control scenario in which the fuel cell unit is turned off, and a second control scenario in which the fuel cell unit is turned on.

Abstract: A method for controlling a power assembly comprising a fuel cell unit and an electric energy storage system for storing excess electric energy produced by the fuel cell unit. The method comprises predicting a power demand from the power assembly over a prediction time horizon, obtaining a state-of-charge and/or power capability of the electric energy storage system, based on the predicted power demand and the obtained SoC and/or power capability, identifying a time period during which the power assembly is expected to be able to deliver power in accordance with the predicted power demand with the fuel cell unit shut down, or is at least expected to be able to deliver power at a minimum power level determined with respect to the predicted power demand, controlling the power assembly to shut down the fuel cell unit during at least a part of the identified time period in response to the identified time period being larger than a time threshold.

Abstract: The present invention relates to a braking system for a vehicle at least partially propelled by an electric traction motor, the braking system comprising an electric machine electrically connected to an electric source; an air flow producing unit mechanically connected to, and operated by, the electric machine; and an electrical brake resistor arrangement positioned in fluid communication between the air flow producing unit and an ambient environment, the electrical brake resistor arrangement being electrically connected to the electric source and arranged to heat air supplied from the air flow producing unit by electrical power received from the electric source, and to supply heated air to the ambient environment.

Abstract: An air cooled resistor arrangement comprising a first elongated tube member forming a first air flow channel and a second elongated tube member forming a second air flow channel, wherein the first elongated tube member is at least partly housed inside the second elongated tube member. The air-cooled resistor arrangement further comprises an air dilution portion comprising at least one opening at which the first air flow channel is arranged in fluid communication with the second air flow channel.

Abstract: An energy management system for a vehicle comprising a fuel cell system having at least one fuel cell with an anode side and a cathode side, an air inlet conduit connected to an inlet end of the cathode side for supplying air to the cathode side of the at least one fuel cell, and further having an air compressor arrangement disposed in the air inlet conduit and in fluid communication with the cathode side; wherein the energy management system further comprises an air-cooled brake resistor in fluid communication with the air compressor arrangement, and a control system in communication with the air compressor arrangement and with a controllable valve assembly arranged and configured to control supply of compressed air from the air compressor arrangement to any one of the at least one fuel cell and the air-cooled brake resistor via a first fluid conduit and a second fluid conduit, respectively.

Abstract: A braking system for a vehicle at least partially propelled by an electric traction motor electrically connected to an electric power system. The braking system comprises an electric machine configured to be electrically connected to the electric power system, the electric machine comprising a first output shaft and a second output shaft, an air blower controllably connected to the first output shaft by a clutch, the clutch being controllable between an open position in which no power is transmitted from the electric machine to the air blower, and a closed position in which power is transmitted from the electric machine to the air blower, and a fluid pump operatively connected to the electric machine via the second output shaft, wherein the fluid pump is arranged in upstream fluid communication with a fluidly operated member and in downstream fluid communication with a fluid tank.

Abstract: A braking system for a vehicle comprising a fuel cell system generating electric power to an electric power system arranged to propel an electric traction motor, the braking system comprising a tank arrangement comprising a first inlet configured to be arranged in downstream fluid communication with an outlet of the fuel cell system for receiving fuel cell exhaust, and a first outlet configured to at least convey fuel cell exhaust from the tank arrangement, and an air blower operable at least during power generative braking of the electric traction motor, the air blower being configured to convey ambient air into an air conduit, wherein the air conduit is extending between the air blower and a second inlet of the tank arrangement.