Volvo Trucks Patente

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The invention relates to an electric energy dissipating system for a vehicle. An air flow producing unit provides a pressurized air flow through a fluid conduit. A polyphase electric machine runs on a predefined number of phases. The air flow producing unit is mechanically connected to, and operated by, the electric machine. An electric brake resistor arrangement is located downstream of the air flow producing unit, and comprises one resistor unit for each one of said phases. An electric power system is configured to receive electric power generated by an electric traction motor during braking of the vehicle. The power system comprises an inverter which converts a DC input into a polyphase AC output, wherein the electric machine and the resistor arrangement are electrically connected to the inverter in parallel, such that each phase of the AC output of the inverter is connected to a respective phase of the electric machine and to a respective resistor unit, in parallel.

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The disclosure relates to a valve assembly (20) for a fluid management system (11) of a vehicle (10), said valve assembly comprising: a valve body (22) having an inner volume (21) defining at least a first chamber (21a), a second chamber (21b), a breathing chamber (21c) in fluid communication with atmosphere, and a fluid medium flow path (23) extending through the valve body, the fluid medium flow path having an inlet (25) for receiving a fluid medium and an outlet (26) for said fluid medium, said first chamber being at least partly disposed in the fluid medium flow path, a flow closing member (27) displaceable arranged within the valve body and configured to control the flow of fluid medium from said inlet to said outlet via said first chamber, said flow closing member being displaceable between an open position (OP), in which fluid medium is permitted to flow in the fluid medium flow path from the inlet to the outlet via the first chamber, and a closed position (CP), in which said flow closing member is positioned to prevent fluid medium to flow in the fluid medium flow path from the inlet to the outlet.

A computer system for determining a limit for a control parameter for a vehicle the computer system comprising processing circuitry configured to: acquire a tyre wear limit for one or more wheels of the vehicle; acquire a first cost evolution associated with a control parameter for the vehicle; and determine a limit for the control parameter based on the first cost evolution and the tyre wear limit; wherein control of the vehicle according to the limit for the control parameter does not exceed a cost associated with the tyre wear limit.

A battery pack arrangement (30) comprising: a battery pack (31) comprising a plurality of battery cells (33) arranged in a battery pack housing (35); a battery pack service unit (40) for managing the battery pack (31), the battery pack service unit (40) being arranged in a service unit housing (42) arranged remotely of the battery pack housing (35); a communication link (50) arranged between the battery pack housing (35) and the service unit housing (42) for enabling the battery pack service unit (40) to communicate with the battery pack (31); and a power cable or power rail (60) arranged between the battery pack housing (35) and the service unit housing (42) for enabling transmission of a high voltage current between the battery pack (31) and the service unit (40). The battery pack service unit (40) comprises at least a first contactor (44) configured to disconnect the battery pack (31) from a load and/or a power source (10).

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The present disclosure relates to a method for controlling a powertrain system (305) of a heavy-duty vehicle (100), said powertrain system having at least one differential arrangement (340) for receiving torque from a propulsion unit (330) of said powertrain system and delivering at least a part of said torque to a set of first and second wheels, said method being implemented by a control unit, said method comprising determining a split-friction condition indicative of a wheel slip difference between the first and second wheels, wherein one of the first and second wheels defines a high-friction side of the differential arrangement and the other one of the first and second wheels defines a low-friction side of the differential arrangement; determining a target wheel slip for the high-friction side; and in response to said determined split-friction condition; controlling a brake force on the low-friction side of the differential arrangement based on the target wheel slip on the high-friction side.

A method of transport cycle balancing is provided, including recurrently receiving first data indicative of movements of a plurality of dump trucks (130a-i) operating in accordance with a respective transport cycle including a planned hauling of material between a same first site (no) and at least one second site (120a-c), forecasting an imminent imbalance of inbound and outbound trucks for the first site based on the received first data, determining one or more mitigative actions for the trucks in response to forecasting the imminent imbalance, and communicating the mitigative action(s) to at least one truck. A corresponding monitoring system, dump truck, vehicle fleet, computer program and computer program product are also provided.

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