Aspects of the disclosure relate to a diesel exhaust fluid tank for a vehicle. An exemplary diesel exhaust fluid tank includes a tank body to store diesel exhaust fluid, a tank supply line to deliver the diesel exhaust fluid to a Selective Catalytic Reduction (SCR) device, and a tank siphon line to drain the diesel exhaust fluid from the tank body. The tank siphon line is mounted to the tank body and includes a siphon inlet (e.g., devoid of a filter) at or proximate to a bottom wall of the tank body. The integrated tank siphon line avoids any need to remove tank components to feed a siphon tube into a tank. Further, the tank siphon line leverages preexisting components in the diesel exhaust fluid tank and/or the vehicle to siphon diesel exhaust fluid as needed.

Aspects of the disclosure relate to a diesel exhaust fluid tank for a vehicle. An exemplary diesel exhaust fluid tank includes a tank body to store diesel exhaust fluid, a tank supply line to deliver the diesel exhaust fluid to a Selective Catalytic Reduction (SCR) device, and a tank siphon line to drain the diesel exhaust fluid from the tank body. The tank siphon line is mounted to the tank body and includes a siphon inlet (e.g., devoid of a filter) at or proximate to a bottom wall of the tank body. The integrated tank siphon line avoids any need to remove tank components to feed a siphon tube into a tank. Further, the tank siphon line leverages preexisting components in the diesel exhaust fluid tank and/or the vehicle to siphon diesel exhaust fluid as needed.

Methods are devices are provided for preventing fracture of a fluid-filled chamber or tank. In general an anti-fracture expansion device can be disposed internally within a fluid-filled chamber such that during a freeze event displaced fluid can compress or flow into the anti-fracture expansion device, thereby reducing the likelihood that the chamber will rupture. The internal disposition of the expansion device prevents it from interfering with other components that may be connected to or adjacent to the fluid chamber, thereby conserving space. In certain embodiments, the expansion device can have a dual function wherein it can act as a flow control valve in addition to functioning as an anti-fracture expansion device.

Provided herein are systems, apparatuses, and methods for localized, on-demand diesel exhaust fluid (“DEF”) production. The systems can comprise a loading station for securing a container comprising a pre-measured quantity of urea and releasing the urea from the container. The released urea and water can then be fed into a mixing tank to produce the DEF product. The water can be pre-treated, for example, in a reverse osmosis and/or deionization process before being fed to the mixing tank. The DEF product can be immediately dispensed into a diesel vehicle or stored in a nearby intermediate storage tank. The systems and processes advantageously reduce or eliminate the need for over-the-road shipments and retail packaging of DEF.

The present disclosure relates to a device for preventing overflow of urea water out of an injection hole of a urea water tank when urea water is injected into the injection hole. The device is configured to enhance the function of a ventilation flow path, thus efficiently relieving pressure in the urea water tank when urea water is injected into the urea water tank.

Systems are provided for an assembly for a urea tank system. In one example, coaxial tubes including an inner tube and an outer tube are used to separate a urea passage from a gas passage. An angled tube, which extends from a urea tank to a portion of the outer tube downstream of a filler head relative to a direction of urea flow directs gases from the urea tank to the gas passage. This decreases a packaging size of the urea tank system.

A diesel exhaust fluid (DEF) storage system may include a reservoir body having a magnet integrally formed about an inlet opening of the reservoir body. For example, the magnet may be molding about a perimeter of the inlet opening during a molding process in which the reservoir body is formed. In some examples, the inlet opening defines a lumen extending into an interior of the reservoir body with the magnet being positioned at a location along the lumen opposite an external end face. The position of the magnet may be effective to engage a corresponding magnet on a DEF fill nozzle, allowing DEF to be introduced into the reservoir body. By integrating the magnet into the reservoir body, protection features that prevent erroneous filling of the reservoir body cannot be removed or bypassed.

The invention concerns a delivery valve for the delivery of a fluid into a tank of a motor vehicle. According to the invention, the following is provided: a) the delivery valve has a first settable maximum volume flow, b) the delivery valve has a second settable maximum volume flow which is higher than the first settable maximum volume flow, c) a control device (24, 25), by means of which optionally the first or the second maximum volume flow can be set, d) a sensor device (20, 21), which is configured for interaction with a signal emitter (29) assigned to the tank of the motor vehicle and which activates the control device.

An exhaust after-treatment system associated with a diesel engine includes a diesel exhaust fluid storage unit. The storage unit includes a diesel exhaust fluid tank and a vent system coupled to the tank and configured to regulate flow of air into the tank and fluid vapor out of the tank.

An auxiliary system with purge control automatically supplies diesel exhaust fluid (DEF) to an onboard DEF tank of a diesel engine to enable prolonged unattended operation. The system includes an auxiliary DEF tank, an auxiliary DEF supply line, a controller, a pump, an air inlet, and a three-way valve configured to switch the pump inlet between the auxiliary DEF tank and air. In response to low-level DEF, the pump delivers DEF through the supply line to replenish the onboard DEF tank. The controller may automatically calculate onboard DEF tank volume based on the delivered volume of DEF, and DEF level data received from an ECM, to enable replenishment control regardless of engine make and model. In response to high-level DEF, engine stoppage, or other system fault, the controller switches the valve to air and runs the pump for a predetermined time to purge DEF from the supply line. The auxiliary system may be skid-mounted, portable, and configured to supply DEF to multiple diesel engines.