The present invention relates to a method for calibrating a UWS quality sensor arranged in a motor vehicle. In the method, the calibration of the UWS quality sensor takes place in an installed situation of the UWS quality sensor in the UWS tank.

The ventilation device (4) for a vehicle liquid tank, comprises: a membrane (20) impermeable to a predetermined liquid and permeable to a vapor likely to be produced by this liquid, and at least one pipe (52) suitable for discharging liquid found on the membrane from the device. The or each pipe has an end contiguous with the membrane, the rest of the or each pipe extending at an altitude lower than this end when a main axis of the device is vertical.

Arrangement (100) for an exhaust gas aftertreatment system (102), comprising a tank (104) for storing a reducing agent (106); a pump unit arrangement (108) arranged in downstream fluid communication with the tank; a nozzle (110) arranged to inject a flow of reducing agent into the exhaust gas aftertreatment system (102), the nozzle being arranged in downstream fluid communication with the tank, via the pump unit arrangement, by means of a reducing agent conduit (112); an air conduit (114) arranged in fluid communication with the nozzle (110) for delivery of compressed air to the nozzle; and a return conduit (116) arranged in fluid communication between the reducing agent conduit and the tank, the return conduit comprising a return conduit valve arrangement (118), wherein the air conduit (114) is arranged in fluid communication with the reducing agent conduit (112) for controllably delivery of reducing agent to the tank via the return conduit valve arrangement (118) by means of providing compressed air from the air conduit

A tank device for a motor vehicle, and a motor vehicle having such a tank device. The tank device includes a motor vehicle tank, a ventilation outlet, and a filler pipe head configured to fill the motor vehicle tank. The filler pipe head includes a filler opening configured to receive a nozzle during a filling sequence, and a filling ventilation opening configured for movement between an open state during introduction of the nozzle to fluidically connect an inner space of the filler pipe head to the ventilation outlet, and a closed state during removal of the nozzle from the filler opening, the filler pipe head having an operational ventilation opening fluidically connected to the ventilation outlet, and which has a semi-permeable diaphragm to permit flow of gasses therethrough and also to prevent a flow of fluids.

A reductant insertion system for delivering a reductant to an aftertreatment system comprises a reductant storage tank configured to store a liquid reductant. A pressure relief valve is operably coupled to the reductant storage tank. The pressure relief valve is configured to selectively open in response to a reductant gas pressure in the reductant storage tank exceeding a predetermined reductant gas pressure threshold. A reductant insertion assembly is fluidly coupled to the reductant storage tank and configured to deliver the liquid reductant to the aftertreatment system. The reductant insertion assembly comprises a shutoff valve configured to be selectively closed in response to a liquid reductant pressure in the reductant insertion assembly exceeding a liquid reductant pressure threshold, so as to stop delivery of the reductant from the reductant storage tank to the reductant insertion assembly.

A system for diesel exhaust fluid (DEF) pressure relief for a vehicle that includes a DEF pump assembly in an interior of a DEF storage tank is described. The system includes a DEF shear structure fixed to a top interior portion of the DEF storage tank. The DEF shear structure includes a plurality of expansion channels extending from the top interior portion of the DEF storage tank into stored DEF in the storage tank. When the DEF storage tank experiences a freeze event the plurality of expansion channels have smooth walls configured to guide a frozen DEF away from the DEF pump assembly.

A reductant insertion system for delivering a reductant to an aftertreatment system comprises a reductant storage tank configured to store a liquid reductant. A pressure relief valve is operably coupled to the reductant storage tank. The pressure relief valve is configured to selectively open in response to a reductant gas pressure in the reductant storage tank exceeding a predetermined reductant gas pressure threshold. A reductant insertion assembly is fluidly coupled to the reductant storage tank and configured to deliver the liquid reductant to the aftertreatment system. The reductant insertion assembly comprises a shutoff valve configured to be selectively closed in response to a liquid reductant pressure in the reductant insertion assembly exceeding a liquid reductant pressure threshold, so as to stop delivery of the reductant from the reductant storage tank to the reductant insertion assembly.

An internal combustion engine including a urea-water solution injection in the exhaust system, includes at least one urea-water solution tank, at least one pump, at least one intake line leading to the pump, at least one urea-water solution metering valve which is connected to the pump with the aid of a pressure line, and at least one return line which leads from the pump to the urea-water solution tank and at whose end opposite to the pump a filter element is situated, as well as at least one urea-water solution sensor situated in the urea-water solution tank.

A diesel engine aftertreatment system is disclosed. The aftertreatment system includes a diesel exhaust fluid (DEF) injection system including a selective catalytic reduction (SCR) device, a DEF tank connected to the SCR device, a DEF injection device installed in the tank, and an integrated grommet filter. The integrated grommet filter includes a grommet having a top gasket portion and a bottom cylindrical skirt portion. The cylindrical skirt portion is integrally connected to a sock filter. In an embodiment, the integral connection between the skirt portion and the sock filter includes an overlap and stitching. In an embodiment, the gasket is a star shaped gasket.

An exemplary system for improving gaseous venting from a fluid storage vessel includes a hollow member configured to receive a fuel nozzle, the fuel nozzle having an aspirate opening, a vent line fluidly connecting the fluid storage vessel and the hollow member, and a flow guide device fluidly connected to the hollow member and the vent line. The flow guide device includes a flow guide chamber having an inlet, a plurality of sidewalls, and an outlet, and a plurality of directional blades formed within the flow guide chamber. The plurality of directional blades direct a fluid flow through the flow guide chamber and the hollow member toward the aspirate opening of the fuel nozzle.