Abstract: A fire extinguishing assistance system arranged in a modular vehicle, for assisting e.g. a fire extinguishing vehicle in extinguishing an ongoing or imminent fire in the modular vehicle. The modular vehicle comprises at least one drive module and a functional module that are releasably connected. The system comprises a plurality of ports accessible from the outside of the modular vehicle; wherein each port is configured for receiving a fire extinguishing agent from e.g. the fire extinguishing vehicle. The system also comprises an individual manifold connected to each port, wherein each is arranged to guide the fire extinguishing agent to at least one nozzle directed inside of the modular vehicle. The system further comprises a control device to detect an ongoing or imminent fire and configure at least one of the plurality of ports selected for receiving a fire extinguishing agent to assist in suppressing the ongoing or imminent fire.

Abstract: A method for a process of signal transmission between a plurality of electrical units, wherein the method comprises: electrically interconnecting the plurality of electrical units by way of a plurality of electrical junction blocks, each electrical junction block of the plurality of electrical junction blocks comprising one or more terminals. An arrangement for signal transmission between a plurality of electrical units, wherein the arrangement comprises a plurality of electrical junction blocks for electrically interconnecting the plurality of electrical units, and wherein each electrical junction block of the plurality of electrical junction blocks comprises one or more terminals.

Abstract: A busbar comprising two or three more sheet-shaped conductors, wherein said conductors overlap each other and define an elongated body having a central channel, and wherein the conductors are separated by an electric isolation, and wherein each conductor has a surface exposed to the channel, and wherein the area of said surface of each conductor is equal the area of said surface of each of the other conductors.

Abstract: A method for determining the association of a sensor device with a battery unit. A first circuit includes a first battery unit. A second circuit includes a second battery unit. An electric current limiting device connects the circuits to one another. A first sensor device detects a voltage or a current associated with one of the first and second battery units while a second sensor device detects a voltage or a current associated with the other one of the first and second battery units. The method includes activating an electrical energy consumer or an electrical energy producer of the first circuit, and upon detection of a voltage change or a current change by one of the first and second sensor devices, determining that the one of the first and second sensor devices which detects a voltage change or a current change is associated with the first battery unit.

Abstract: An electric rotating machine comprising a stator, a rotor rotatable about an axis of rotation in relation to the stator, a rotor compartment holding the rotor, a fluid system for cooling one or more of the rotor and stator and a fluid-guiding member having a front and a back. The front of the fluid-guiding member faces the rotor compartment while the back of the fluid-guiding member faces away from the rotor compartment. The fluid-guiding member comprises a guide for guiding a fluid. The guide extends from the front of the fluid-guiding member toward the back of the fluid-guiding member. The guide is configured to guide a fluid from the front of the fluid-guiding member to the back of the fluid-guiding member upon rotation of the rotor to remove a fluid from the rotor compartment.

Abstract: A piston for an internal combustion engine is disclosed. The piston is configured to reciprocate along a centre axis of the piston during operation in an engine. The piston comprises a number of fuel directing surfaces arranged at a distance from a top surface of the piston measured along the centre axis. Each fuel directing surface is configured to direct a fuel spray sprayed onto the fuel directing surface. The fuel directing surfaces are arranged with gaps between two adjacent fuel directing surfaces. The present disclosure further relates to an engine comprising a piston and a vehicle comprising an internal combustion engine.

Abstract: The present invention relates to a method for controlling a vehicle in association with a descent, the vehicle having a powertrain comprising: a drive unit configured to provide propulsion power; an auxiliary brake device; and a first cooling circuit comprising a first coolant; wherein the drive unit and the auxiliary brake device are arranged to be selectively connected or disconnected with/from the first cooling circuit, wherein the drive unit has a first maximum temperature and the auxiliary brake device has a second maximum temperature higher than the first maximum temperature, the method comprising: controlling the drive unit to reduce the provided propulsion power when the vehicle is approaching an upcoming descent, which fulfils predetermined criteria; disconnecting the drive unit from the first cooling circuit; connecting the auxiliary brake device with the first cooling circuit; and controlling the auxiliary brake device to brake to vehicle down the descent.

Abstract: A rotor arrangement for an electric motor is disclosed. The rotor arrangement comprises a first rotor comprising a hollow cylinder and a cylindrical rotor stack shrink-fitted onto the hollow cylinder. The first rotor comprises a first end plate attached to a first end portion of the hollow cylinder. The rotor arrangement further comprises a rotor shaft comprising a first shaft member and a second shaft member arranged coaxially to the first shaft member. The first shaft member is connected to a connection portion of the first end plate. The rotor arrangement comprises a second rotor connected to the second shaft member. The present disclosure further relates to an electric propulsion motor arrangement, a vehicle, and a set of rotors for electric motors.

Abstract: A piston for an internal combustion engine is disclosed. The piston comprises a number of fuel directing surfaces for directing a fuel spray sprayed onto the fuel directing surface. At least one of the fuel direction surfaces is/are inclined relative to a tangential direction of the piston. The present disclosure further relates to an engine comprising a piston and a vehicle comprising an internal combustion engine.

Abstract: The disclosure concerns a method and a control arrangement for controlling valve actuation of an ICE comprising an exhaust valve, an intake valve, and a turbo compressor. The method comprises and the control arrangement is configured to: limiting/limit valve actuation changes of the exhaust and intake valves based on compressor data including surge limit data for the turbo compressor and one or both of a current turbo compressor rotational speed and a current turbo compressor pressure ratio, to maintain a turbo compressor mass flow above a limit mass flow value.

Abstract: The present disclosure relates to an exhaust gas aftertreatment system and method for controlling same. The exhaust gas aftertreatment system comprises: a reductant dosing device; a selective catalytic reduction device arranged downstream of the reductant dosing device; an ammonia slip catalyst arranged downstream of the SCR device; a feedback NOx sensor arranged downstream of the SCR device and upstream of the ammonia slip catalyst; a tailpipe NOx sensor arranged downstream of the ammonia slip catalyst; and a control device configured for: providing an initial dosing of reductant from the reductant dosing device; obtaining a feedback signal from the feedback NOx sensor and a tailpipe NOx signal from the tailpipe NOx sensor; and adjusting the dosing of reductant until the feedback signal exceeds the tailpipe NOx signal by a value within a predetermined positive interval.

Abstract: A method of heating a powertrain of a vehicle is disclosed, wherein the powertrain comprises an electric machine configured to provide motive power to the vehicle. The method comprises the step of passing an electric current through the electric machine to rotate a rotor of the electric machine while ensuring stand still of the vehicle. The present disclosure further relates to a computer program, a computer-readable medium, a control arrangement, a powertrain for a vehicle, and a vehicle comprising a powertrain.

Abstract: A method for a procedure of connection and disconnection of a vehicle to/from a plurality of electrical lines of an electric road system, wherein the connection and disconnection procedure comprises in response to a disconnect warning and if the vehicle is connected to the plurality of electrical lines, blocking the electric current from the plurality of electrical lines to a powertrain of the vehicle. The method comprises: maintaining the connection of the vehicle to the plurality of electrical lines while the electric current from the plurality of electrical lines to the powertrain of the vehicle is blocked in response to the disconnect warning. A control arrangement implementing such a method.

Abstract: A method for, during creep mode, performing gearshift in a vehicle powertrain comprising a combustion engine, a gearbox, and a clutch is provided. The method comprises, in response to a request for gearshift, disconnecting the combustion engine from the gearbox by opening the clutch. The method further comprises, when the combustion engine is disconnected from the gearbox, shifting the gearbox and controlling the speed of the combustion engine to a target speed. Said target speed constitutes a combustion engine speed corresponding a desired combustion engine torque for completing a torque ramp during closing of the clutch. The method further comprises connecting the combustion engine to the gearbox by closing the clutch. A control device configured to perform the method and a vehicle comprising the control device are also provided.

Abstract: A method and an apparatus for controlling driving power from a powertrain of a motor vehicle comprising a kickdown switch, wherein an activation of the kickdown switch triggers a default action of temporarily requesting an increase of a maximum power available from the powertrain, the method comprising: recognizing that a speed limiter, setting an upper speed limit for the vehicle speed, is active, comparing a current vehicle speed to a predefined speed threshold, which is below the upper speed limit, and if the current vehicle speed is above the speed threshold and the speed limiter is active, triggering an altered action in response to the activation of the kickdown switch.

Abstract: Disclosed is a method for controlling a speed of a vehicle in a downhill road section followed by an uphill road section. The vehicle comprising an electrical machine system for applying braking to the vehicle to maintain a first vehicle speed in the downhill road section and to apply a propelling power in the uphill road section. The method comprising determining whether a temperature of the electrical machine system will exceed a temperature limit in the uphill road section, if maintaining the first vehicle speed in the downhill road section, and if so, reducing the first vehicle speed to a second vehicle speed in the downhill road section such that, in comparison to when the first vehicle speed would have been maintained, the temperature of the electrical machine system is decreased when the vehicle reaches the uphill road section and a travelling time in the downhill road section is increased.

Abstract: The invention relates to a safety method for an emergency vehicle, the emergency vehicle being configured to be autonomously operated and comprising: an energy storage unit; sensor devices arranged to monitor the surroundings and the vehicle; a water pump; at least one connection unit for an external water source and/or a water hose; conduits arranged in fluid communication with the water pump and/or the at least one connection unit; a valve arrangement arranged in fluid communication with the water pump, the at least one connection unit and the conduits, the method comprising: receiving a command from a control center to operate the vehicle to a location associated with an emergency situation; operating the vehicle to the location; and controlling the vehicle to perform a safety function to alleviate the emergency situation.

Abstract: A method in a control arrangement of a vehicle and a control arrangement for a vehicle for downshifting gears in an uphill slope are presented. The method comprises, when the vehicle is travelling in an uphill slope using an initial gear of the vehicle's automated manual transmission gearbox: simulating at least one speed profile for a downshift to, and a usage of, at least one gear; determining that a minimal speed of each one of the at least one simulated speed profile has a value indicating that the actual speed of the vehicle will be less than or equal to zero in the uphill slope; opening a clutch before is reduced to a value less than zero; activating at least one vehicle brake; shifting vehicle's automated manual transmission gearbox to a start gear; closing the clutch; and deactivating the at least one vehicle brake.

Abstract: A control device and a method for controlling a vehicle powertrain to overcome, or avoid, a cog-to-cog condition during gear shifting is provided. The method comprises, when an input shaft of the gearbox is rotating, controlling a synchromesh arrangement so as to induce a difference in rotational speed between a first gear wheel and a first coupling sleeve arranged to lock the first gear wheel to a main shaft of the gearbox by at least partly engaging the first gear wheel or a second gear wheel to the input shaft. Furthermore, a computer program, a computer-readable medium and a vehicle are provided.

Abstract: Disclosed is a four-stroke direct injection engine comprising a camshaft, and exhaust valve, and a control system. The control system is configured to change the timing of the camshaft to advance a closing of the exhaust valve, control a first fuel injection step during a compression stroke of the piston, control a second fuel injection step during a power stroke of the piston, and control a third fuel injection step, after the second fuel injection step, during the power stroke of the piston.