Abstract: A fuel cell system comprising at least one fuel cell and at least one cooling system configured to cool the at least one fuel cell. The at least one cooling system comprises at least one fluid intake, one or more cooling fans located downstream of the at least one fluid intake, and at least one radiator located upstream and/or downstream of the one or more cooling fans. The fuel cell system also comprises an exhaust flow passage configured to convey fuel cell exhaust emitted from the at least one fuel cell away from the at least one fuel cell, and at least one valve configured to selectively direct an amount of the fuel cell exhaust in the exhaust flow passage into the at least one cooling system via the at least one fluid intake and/or via at least one inlet located between said one or more cooling fans and said at least one radiator.

Abstract: A computer system has processing circuitry configured to issue control information to a fuel cell system being fueled by hydrogen gas and air. The air is supplied to the fuel cell system at an air feeding pressure. The fuel cell system being adapted to be cooled by a cooling system accommodating a coolant.

Abstract: An internal combustion engine (ICE) system operating on a hydrogen-based fuel, comprising: an ICE having at least one cylinder at least partly defining a combustion chamber; a fuel injector arrangement configured to inject a pilot diesel fuel portion and a main hydrogen-based fuel portion into the combustion chamber; an exhaust gas recirculation (EGR) system having an EGR conduit arranged to connect an exhaust manifold and an air intake manifold to permit recirculation of exhaust gas through the at least one cylinder during operation of the ICE; a water condensate extraction system configured to be in fluid communication with the EGR system and further configured to extract water condensate from the exhaust gases circulating in the EGR conduit; and a diesel-water emulsion blender and storage system configured to receive the extracted condensed water and further configured to create a diesel-water emulsion from the extracted condensed water and diesel.

Abstract: A computer implemented method controls an electric power system of a fuel cell electric vehicle (FCEV). The electric power system has an energy storage system and a fuel cell. The fuel cell is controlled to assume a power mode when arriving at a starting position of an upcoming road path when an electric energy consumption of the electric power system exceeds an electric energy capacity of the electric power system.

Abstract: A computer implemented method controls an electric power system of a fuel cell electric vehicle (FCEV). The electric power system has a fuel cell and an energy storage system electrically connected to each other. An upcoming position at which the electric power system will assume a low load operation mode is determined, and the electric power system is controlled based on a power distribution scheme to arrive at the upcoming position with a state of charge level of the energy storage system below a predetermined threshold level, whereafter the electric power system is controlled to feed electric power at least to the energy consumer when the electric power system assumes the low load operation mode at the upcoming position.

Abstract: A vehicle arrangement for braking comprising at least a first electric motor comprising a first shaft being arranged to be mechanically connected to a drive shaft of the vehicle via a gearbox, and a braking compressor comprising a compressor shaft being arranged to be mechanically connected to the first shaft of the first electric motor via a compressor clutch, such that the first shaft drives the compressor shaft, wherein the first shaft is connected to the gearbox via a first motor clutch and a first gearbox shaft, the arrangement further comprising a mass flow rate controller arranged for controlling the air mass flow rate through the compressor. A method for controlling a vehicle arrangement, a method for braking a shaft of an electric motor, a control unit, a vehicle, a computer program and a computer readable medium.

Abstract: A method of noise management in an electric heavy vehicle, including determining a noise threshold and corresponding reduced target speed for a cooling fan providing cooling of a propulsion/braking system of the vehicle, obtaining look-ahead data pertinent to an upcoming section of a road, and to determine a speed profile for the vehicle such that a cooling requirement of the propulsion/braking system does not exceed a cooling capacity of the cooling fan running at the reduced target speed. The method further includes, while driving along the section of the road, controlling the cooling fan not to exceed the target speed, and controlling the speed of the vehicle in accordance with the speed profile. A corresponding control system, heavy vehicle, computer program and computer program product are also provided.

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 air cooled resistor arrangement comprising a first elongated tube member which is housed inside a second elongated tube member. The first and second elongated tube members are spaced apart from each other by an air gap for allowing a flow of air to flow through the first elongated tube member and the air gap.

Abstract: A cooling system includes a fluid circuit and a cooler arranged in fluid communication with said fluid circuit. The cooler regulates the temperature of said coolant. The fluid circuit comprises a first coolant fluid branch for circulating coolant to regulate a temperature of a low temperature component and a second coolant fluid branch for circulating coolant to regulate a temperature of a high temperature component. A first pump unit is arranged in said first coolant fluid branch. A coolant temperature control system is disposed in said first coolant fluid branch and regulates a temperature of the coolant to the low temperature component on the basis of a temperature difference between a coolant temperature upstream the coolant temperature control system and a temperature required at an inlet of the low temperature component.

Abstract: A method performed by a control unit comprised in a vehicle for controlling a distribution of service brake activation between a first vehicle unit and a second vehicle unit of the vehicle is provided. The control unit determines a first periodic brake adjustment and a second periodic brake adjustment to be applied to an electric propulsion system and a service brake system of the vehicle. The control unit determines the first and second periodic brake adjustment, respectively, to adjust a retardation of the vehicle by less than a retardation threshold. The control unit applies the first periodic brake adjustment to the electric propulsion system of the vehicle and applies the second periodic brake adjustment to the service brake system of the vehicle. Applying the first periodic brake adjustment comprises periodically adjusting a charging power of the electric propulsion system of the vehicle.

Abstract: An arrangement and a method for handling exhaust water of a fuel cell system of a vehicle, the vehicle comprising a braking system having at least one component which generates heat during a braking event, the arrangement comprising a water tank configured to collect and store exhaust water discharged from the fuel cell system, a vaporization arrangement configured to vaporize the exhaust water into water vapor, and a discharge arrangement configured to discharge the water vapor out of the vehicle, wherein the vaporization arrangement comprises a fluid circuit configured to circulate a heat transfer fluid between the at least one component of the braking system and the water tank, such that the heat generated by the at least one component of the braking system is transferred to the water tank via the heat transfer fluid to heat and to vaporize the exhaust water in the water tank.

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 system and method for controlling operation of a fuel cell system of a fuel cell vehicle, to reduce an amount of heat generated by one or more heat sources in the fuel cell system, are provided. The method comprises obtaining a value of power output of the fuel cell system, the value indicating a power demand from the fuel cell system during operation of the vehicle; and adjusting a value of a target coolant inlet temperature of a coolant at a coolant inlet of the fuel cell stack to vary between a first target temperature level and a second target temperature level, in dependence on the value of the power output, to optimize a duration of time during which the target temperature is different from the first target temperature level and to optimize a value of one or more parameters related to operation of the fuel cell system.

Abstract: A water spray cooling system includes a first storage container storing exhaust water generated from a fuel cell system comprised in the fuel cell electric vehicle, a second storage container connected to the first storage container via a first valve; a first tube connecting a first opening of the second storage container with an air tank via a second valve. The air tank comprises compressed air generated from a compressed air system comprised in the fuel cell electric vehicle. The cooling system also includes one or more water spray nozzles connected to a second opening of the second storage container through a second tube.

Abstract: There is provided a truck, comprising a cab and a plurality of storage tanks secured behind the rear of the cab, wherein the storage tanks are configured to contain hydrogen gas. An energy conversion system is configured to receive hydrogen gas from the storage tanks and to convert the chemical energy of the hydrogen into mechanical or electric energy. A cooling arrangement is configured to cool the energy conversion system. A wall is provided behind the cab and laterally of the storage tanks, the wall having its main extension in a vertical plane, wherein said wall houses at least a part of said cooling arrangement.

Abstract: A method of noise management in an electric heavy vehicle, including determining a noise threshold and corresponding reduced target speed for a cooling fan providing cooling of a propulsion/braking system of the vehicle, obtaining look-ahead data pertinent to an upcoming section of a road, and to determine a speed profile for the vehicle such that a cooling requirement of the propulsion/braking system does not exceed a cooling capacity of the cooling fan running at the reduced target speed. The method further includes, while driving along the section of the road, controlling the cooling fan not to exceed the target speed, and controlling the speed of the vehicle in accordance with the speed profile. A corresponding control system, heavy vehicle, computer program and computer program product are also provided.

Abstract: The present invention relates to a method for controlling an internal combustion engine arrangement (100). The internal combustion engine arrangement (100) comprises a combustion cylinder (102) and an inlet valve (106) arranged to be positioned in a closed position at a distance before a piston (104) reaches a bottom dead center during normal operation. The inlet valve is further controllable to be arranged in the open position until the piston reaches the bottom dead center if a required volumetric efficiency of the combustion cylinder is higher than a volumetric efficiency during normal operation.

Abstract: The present invention relates to a method for controlling lubrication of a connecting rod bearing of an internal combustion engine arrangement. The method comprises the steps of controlling an inlet valve to be maintained in the closed position during a movement of the reciprocating piston from the top dead center during an intake stroke for a predetermined number of crank angle degrees; and positioning the inlet valve in the open position when the reciprocating piston has traveled the predetermined number of crank angle degrees from the top dead center, wherein lubricating medium is provided to the connecting rod bearing within a predetermined time period before the inlet valve is arranged in the open position.

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.