A vehicle tank pressurization device has a valve seat establishing an opening for fuel vapours and/or air; such opening has a vertical axis coincident with the direction of application of an opening force, that is directed upwards and is produced, in use, by the pressure in an internal upper region of the tank; the device also has a movable shutter, placed on the valve seat, to open/close the valve seat, and having a weight set by design in such a way as to define the magnitude of a closing force directed downwards and with a center of gravity positioned eccentrically with respect to the vertical axis of the opening.

The invention relates to a filler neck for an operating-liquid tank (3) for a motor vehicle. The filler neck (1) comprises a mouth-hole neck (11), into which a nozzle can be inserted in order to fill the operating-liquid tank (3). A ventilation path is provided in the filler neck (1), which ventilation path allows a ventilation flow parallel and oppositely to the filling volumetric flow through the mouth-hole neck (11) during filling. The filler neck (1) according to the invention is characterized in that the ventilation path comprises at least one ventilation channel (18) provided in a wall arrangement (14) of the mouth-hole neck (11), which at least one ventilation channel is at least partially surrounded by an outer wall (14a) and an inner wall (14b) of the wall arrangement (14) along the longitudinal extent of the at least one ventilation channel.

A filling device for an operating fluid tank, comprising a tubular outer part and an inner part which is received in the outer part and which is designed to receive an operating fluid nozzle, is characterized in that the inner part comprises a first end wall having an opening and a second end wall having an opening, the end walls being connected to one another via a shell and the shell being provided over the entire length between the end walls with a shell opening whose width corresponds substantially to the corresponding maximum inner width of the shell.

The reducing agent tank has a tank main body and a feed pipe. The tank main body stores a reducing agent to be supplied to an exhaust gas treatment device. The feed pipe protrudes from the tank main body. The feed pipe is provided to replenish the tank main body with the reducing agent. A support base supports a vessel for the reducing agent for replenishment of the reducing agent tank. The support base is variable in position between a developed position in which the support base is arranged at a greater distance from the tank main body than from the feed pipe in a direction of protrusion of the feed pipe from the tank main body in a plan view and a stored position in which the support base is stored in an exterior cover.

SCR tank (10) for motor vehicles for storing and dispensing aqueous urea solution, comprising a tank shell (16) enclosing a tank volume (18) having fluid delivery opening (20) and a fluid removal opening (in 28), wherein the SCR tank (10) further has a ventilation line (30), through which a gas exchange is made possible between a gas-filled region of the tank volume (18) during operation of the tank and the outer atmosphere of the SCR tank (10), wherein the tank shell (16) toward this end has a gas opening (38), at which the ventilation line (30) terminates or which is penetrated by the ventilation line (30), which is characterized in that in a joint section (52) a ventilation line component (32) contributing to formation of the ventilation line (30) is joined in a materially-bonded manner to a joint surface section (36) of the tank shell (16).

A reductant supply system includes a pump having a suction side and a discharge side, and a tank that holds a reductant therein. A reductant supply passageway extends from the tank to the suction side of the pump so as to supply the reductant from the tank to the pump. Further, a reductant discharge passageway extends from the discharge side of the pump and is configured to supply the reductant to a reductant injection assembly that injects the reductant into an exhaust stream of an engine. The system further includes purge componentry that connects the reductant supply passageway to an ambient air source during a purging operation such that the reductant supply system draws air from the air source sequentially through the purge passageway, the reductant supply passageway, and the pump assembly to purge at least the reductant supply passageway and the pump assembly during the purging operation.

A filler neck assembly including a main channel for supplying a liquid into a tank and an auxiliary channel for evacuating gas from the tank. The main channel includes a tubular main body including a first end receiving a filler spout and a second end discharging the liquid into the tank. The auxiliary channel includes a first section and a second section, the first section being a channel integrally molded with the tubular main body, and the second section being formed by a feature on an exterior of the main body cooperating with a separately formed part.

A urea tank for an SCR aftertreatment system, and a tank cover thereof. The tank cover is mounted at a liquid injection port of a tank body of the urea tank. An air hole is provided in a portion of the tank cover corresponding to the liquid injection port. The air hole is covered by a water-blocking air-permeable film (5). A gas inlet hole and a gas discharge hole (11) are further provided in the portion of the tank cover corresponding to the liquid injection port. A first constant pressure check valve (3) and a second constant pressure check valve (4) are mounted on the tank cover. An inlet of the first constant pressure check valve (3) is connected to the gas discharge hole (11). An outlet of the first constant pressure check valve (3) communicates with the exterior of the tank body. An inlet of the second constant pressure check valve (4) is connected to the gas inlet hole. An outlet of the second constant pressure check valve (4) communicates with the interior of the tank body.

A fully-integrated flow-control module is designed to fit within a filler neck of a DEF tank that conforms to ISO (International Organization for Standardization) Standard 22241-4:2009(E). The flow-control module includes a breather cap that locks the flow-control module within the mouth of the ISO filler neck. A spring-biased valve piston, which is controlled by a bleed path within a bleed and float body, opens and closes to control fluid flow into the DEF tank. A fluid level float is mounted on a control rod. The control rod and a bleed valve poppet are rigidly secured to a connector beam. When fluid levels in the tank raise the float, the bleed valve poppet seals a bleed circuit escape port, thereby enabling the valve piston to close, increase fluid pressure at the nozzle, and cause the nozzle to shut off.

Tank for a liquid solution based on water and urea which is suitable for being combined with a selective catalytic reduction system. The tank comprises: a container including an upper wall; a filling pipe union which is positioned on the upper wall of the container and which is suitable for introducing the liquid solution; a lower opening, from which the liquid solution being introduced passes into the container and which protrudes with respect to the upper wall towards the interior of the container; a closure float which is positioned in the container and which is connected to the lower opening and which is configured so as to raise and close the lower opening once the liquid solution in the container reaches a predetermined level.