Volvo Trucks Patente

The disclosure relates to a housing (1) for a high voltage component (10) protected by a hazardous voltage interlock loop (12). The housing (1) comprises an inner compartment (14) configured to at least partially enclose a high voltage component (10), an inner cover (16) configured to prevent access to the inner compartment (14), an outer cover (20) movable to and from a first position, and configured to cover and to prevent access to the at least one fastening device (18) of the inner cover (16), and a switch (22) configured to close the hazardous voltage interlock loop (12) when the outer cover (20) is in the first position. The outer cover (20) is releasably fixable in relation to the inner cover (16) in the first position by a hand-operated locking mechanism, and the switch (22) is configured to open the hazardous voltage interlock loop (12) to discharge an electric potential of the high voltage component (10) when the outer cover (20) is moved from the first position. The disclosure further relates to a high voltage electric system comprising the housing (1) and to a vehicle (3) comprising the high voltage electric system (2).

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The disclosure relates to an assembly-free tool (200) for maintenance of an engine in a vehicle. The tool (200) comprises a bar (210) extending in an axial (A) direction and having a first portion (211) with a first end (212) and a second portion (213) with a second end (214) and a housing (220) surrounding the first portion (211) of the bar (210). The bar (210) is axially translatable in relation to the housing (220). The housing (220) comprises an embedded locking structure (230) for holding the bar (210) in a locking position to stop the movement of the bar (210) in the axial (A) direction. The bar (210), the housing (220) and the locking structure (230) are retained as one unit such that they are non-detachable from each other.

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The invention relates to a heavy-duty vehicle maintenance tool (100) applicable to mount or remove a component from a gearbox, which tool has a cylindrical shape with a predetermined extension along a central axis (X). The tool further comprising a cylindrical wall (101) enclosing an inner cylindrical cavity (102) and connecting an open first end (103) and a closed second end (104). The tool has a first end (103) arranged to be placed in contact with a corresponding surface on a component to be mounted and a second end (104) arranged to be subjected to an external force in order to mount or remove the component. The second end (104) comprises an internal reinforcing lattice structure (110) within the cavity (102). The tool is a lightweight, one-piece thermoplastic component and is produced using an additive manufacturing process.

An exhaust aftertreatment system (100) for an internal combustion engine (110), comprising:- an outer casing (101) having an exhaust gas inlet (102) and an exhaust gas outlet (103) between which a fluid flow path (104) for exhaust gases is provided,- a selective catalytic reduction unit (105) provided in the fluid flow path for reducing nitrogen oxides,- a reductant dosing device (108) for adding reductant to the exhaust flow upstream of the selective catalytic reduction unit, and- a rotatable mixer device (109) for mixing the reductant with exhaust gases upstream of the selective catalytic reduction unit,- an air inlet valve (111) provided upstream of the mixer device for introducing air into the fluid flow path, and- an electric motor (112) arranged for rotating the mixer device to create a suction of air into the fluid flow path via the air inlet valve,The exhaust aftertreatment system further comprises a heating element (130) configured to heat gaseous medium flowing in the fluid flow path.

A computer-implement method (200) of predicting a drag area (as function of airattack angle) of a vehicle combination after hypothetically changing an exterior shape of the vehicle combination from a first exterior shape to a second exterior shape is provided. The method includes obtaining (S201) a first drag area function, obtaining (S202) a first projected area function, obtaining (S203) a second projected area function, and predicting (S204) a second drag area function based on a rescaling of the first drag area function by a ratio of the second projected area function to the first projected area function. A corresponding device, vehicle or vehicle combination, computer program and computer program product are also provided.

A computer-implement method (100) of estimating air drag for a vehicle combination is provided. The method includes detecting (S101) a change of an exterior shape of the vehicle combination to a new exterior shape. The method includes, in response to detecting such a change, and based on one or more images of the vehicle combination captured after the change, estimating (si02) a projected area function indicating a dependence of a projected frontal area of the vehicle combination having the new exterior shape on air-attack angle. The method includes using the estimated projected area function to update (S103) a crosswind-sensitive air drag model for the vehicle combination. A corresponding device for performing the method, a vehicle/vehicle combination, and computer program and computer program product are also provided.

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