Volvo Trucks

This brake circuit (100) for a road vehicle (10) comprises rear wheels (18), which are associated to parking brake actuators (102) controlled by a parking relay valve (104), and front wheels (16), which are each associated front brake actuators (112) controlled by a regulation device (114). The brake circuit includes a standstill control unit (120), which comprises a first input port (122A), configured to receive a first control signal (S122) representative of a state, active or inactive, of the parking relay valve (104), at least one additional input port (123) configured to receive an additional control signal (S123) representative of a state of the vehicle, including whether the engine (19) is running, and a first output port (122B), which is connected to the regulation device. The standstill control unit is configured to generate a control signal (S115) for controlling the regulation device, so that, in turn, the regulation device delivers a positive pressure to the front brake actuators, depending on whether the parking relay valve is in the inactive state, and whether the engine is running.

An electrical connector for electrically connecting a first and a second conductor element, the connector comprising a bolt having a threaded outer portion arranged for insertion through an opening in the first conductor element; an adapter having an elongated body extending along an axial direction between a first and a second end portion and arranged for insertion into a cylindrical opening of the second conductor element, the cylindrical opening forming an inner contacting surface. The adaptor comprises, an engagement portion having a through hole with an internal thread for engaging with the threaded portion of the bolt, and an expandable portion having a cylindrical outer contacting surface and arranged to expand outward radially as the bolt is rotated relative to the adaptor so the cylindrical outer contacting surface is pressed against the inner contacting surface for electrical connection and to secure the relative position in the axial direction.

The disclosed technology concerns a method for providing a liquid solution from a liquid solution tank at a target pressure to an injector fluidically connected to a pump via a supply line, the pump being fluidically connected to the liquid solution tank, comprising the steps of:- Running (110) the pump at a first predefined speed;- After a first duration, measuring (120) the pressure of the liquid solution in the supply line;- If the measured pressure is lower than a threshold pressure lower than the target pressure, running (140) the pump at a second predefined speed lower than the first predefined speed;- If the measured pressure is greater than or equal to the threshold pressure, measuring (150) the pressure of the liquid solution in the supply line after a second duration;- If the measured pressure after the second duration is lower than the target pressure, stop (170) running the pump.

A system (10), comprising: a busbar (12) comprising an opening (22); an electrical connector header (14) comprising a mounting hole (26) with an internal thread (28) oriented in a first thread direction; a fastening bolt (16) comprising an external thread (30) oriented in a second thread direction opposite the first thread direction; and a tubular adapter (18) comprising an external thread (42) configured to mate with the internal thread of said mounting hole when the tubular adapter is screwed in said mounting hole, an internal thread (46) adapted to mate with the external thread of the fastening bolt when the fastening bolt is screwed into the tubular adapter by turning the fastening bolt in a turning direction (48), and at least one internal structure (50) located at a predefined longitudinal position (44) in the tubular adapter and configured to impede rotation of the fastening bolt in relation to the tubular adapter, such that the tubular adapter rotates and moves in a longitudinal direction (56) away from the electrical connector header and establishes a physical contact between a contact surface (38) of the tubular adapter and the busbar when the fastening bolt is turned in said turning direction and rotation of the fastening bolt in relation to the tubular adapter is impeded by said at least one internal structure.

The disclosed technology concerns a method to shut down an internal combustion engine further to a shutdown signal, said internal combustion engine comprising at least one exhaust valve configured to evacuate exhaust gas from the combustion and a compression brake device configured to open said exhaust valve when activated, and an oil circuit fluidically connected to the exhaust valve to provide oil at a predefined oil pressure, said method comprising the steps of, after receiving (100) the shutdown signal by the control unit: - if the oil pressure (Poil) is greater than or equal to a pressure threshold (Pth), activating the compression brake device (110) during the compression stroke, - if the oil pressure is lower than the pressure threshold, increasing (120) the oil pressure to the pressure threshold and activating the compression brake device during the compression stroke once the oil pressure has reached the pressure threshold.

A combined induction-type electrical machine and braking arrangement (19) for use in a heavy vehicle (3), comprising a stator (23) coupled to a body (7) of the vehicle (3), the stator comprising stator windings; a rotor (25) coupled to at least one wheel (9) of the vehicle (3), the rotor comprising rotor conductors (31a-c; 41a-c); a current sensing arrangement (30) configured to sense induced current in at least one rotor conductor; a configuration switching arrangement (33) coupled to the current sensing arrangement (30) and the rotor conductors, and configured to switch from a first configuration, where the induced current experiences a first total resistance, to a second configuration, where it experiences a higher second total resistance, in response to a predefined first signal (49) from the current sensing arrangement (30); and a controller (29) configured to control the stator current to cause the induced current to result in the first signal.

A structural element (7) for an energy storage system battery housing (6) configured to house battery cell stack(s) (4), the structural element (7) having a longitudinal extension along a longitudinal direction (L), a width extension along a width direction (W) and a height extension along a height direction (H). The structural element comprises a venting channel (71) with an extension in the longitudinal direction, which venting channel forms a space configured for transport of cell ejecta from the battery cell stack(s); and at least a first supplemental channel (72) in the longitudinal direction, which supplemental channel(s) forms a space configured for containment of PCM. The supplemental channel(s) is separated from the venting channel with at least a first shared wall (73) configured to at least partly rupture when exposed to a temperature above a temperature threshold and/or a flow of matter at a velocity above a velocity threshold.

The invention relates to a butterfly EGR valve (20) for the regulation of the flow rate of a fluid flowing in a fluid passage (31) comprising a valve body (202) pivotable about a rotation axis (X), the valve body (202) having a first valve plate (203) and a second flexible valve plate (204) pivotally connected thereto, and urging means (205) keeping the second flexible valve plate (204) disposed at an angular distance from the first valve plate (203), the angle (α) between the plane defined by the second valve plate (204) and the plane defined by the first valve plate (203) being less than or equal to 180°, the valve body (202) being able to move at least in the successive positions: - a fully opened position, in which the fluid flows through the fluid passage (31) without being interrupted, - a partially closed position, in which the fluid flows through the fluid passage (31) through a reduced aperture defined by the first valve plate (203), - a fully closed position, in which the fluid cannot flow through the fluid passage (31).

An engine system (10) and an exhaust aftertreatment system (20) arranged in an exhaust flow path (26) of a hydrogen combustion engine (15), comprising: a selective catalytic reduction device (40) configured to reduce nitrogen oxides; a hydrogen and ammonia slip catalyst device (50) arranged downstream of the SCR device (40) in the exhaust flow path (26), the HASC device (50) comprising an oxidation catalyst coating (52) and a metal-zeolite coating (53), a loading of the metal-zeolite coating (53) decreasing along a direction of flow (D); and a particulate filter (60) arranged downstream of the HASC device. In response to determining that the temperature of the HASC device is below a threshold, the engine system (10) is operated with a relatively high percentage of water in the engine out exhaust gases, whereby water is adsorbed on the metal-zeolite coating and a quick temperature rise is achieved.

A fuel injection system (45), for an internal combustion engine, the fuel injection system comprising a first fuel injector (50), connected to a high-pressure fuel source (53), a second fuel injector (55), connected to a low-pressure fuel source (57), an intake pre-chamber (60), receiving fuel injected by the fuel injectors, an intake nozzle (65), receiving fuel from the intake pre-chamber and injecting said fuel in a combustion chamber (20), a spark plug (70) positioned inside the pre-chamber and configured for igniting the fuel injected by the fuel injectors, and a controller, connected to the fuel injectors, for controlling a fuel injection by the first fuel injector into the intake pre-chamber and a fuel injection by the second fuel injector into the intake pre-chamber, as a function of a requested torque for the internal combustion engine and as a function of an availability of fuel at the fuel sources.