An operating fluid tank for a motor vehicle, in particular for storing an aqueous additive, comprising: a tank wall made of a thermoplastic material, wherein the tank wall has a top, a bottom and side walls, and the tank wall delimits a tank volume, wherein the tank volume has a height, a depth and a width; and at least one electrically operated heating device having one or more heating elements, the heating element being inserted into an outer depression of the tank wall, or into an outer recess or opening in the tank wall, or into an inner structure that is integrally formed with the tank wall and that extends into the tank volume, and said heating element extending over at least one third of the height of the tank volume and being electrically contacted outside the tank volume.

Methods and systems are provided for a fluid tank. In one example, the fluid tank comprises an ice guiding device extending into an interior volume of the fluid tank, wherein the ice guiding device extends past a fill limit line of the interior volume.

Methods and systems are provided for estimation of a volume of liquid diesel exhaust fluid (DEF) contained within a DEF tank. In one example, a method for the estimation of the volume of liquid DEF in a DEF tank during DEF freezing conditions may include activating a heater contained within the DEF tank, and then switching estimation of the volume of liquid DEF via a first transfer function to estimation of the volume of liquid DEF via a second transfer function.

A Diesel Emissions Fluid (DEF) Thawing arrangement is provided for use with a vehicle having an engine, an Engine Control Module (ECM), an exhaust system, and an SCR catalytic device. A DEF injection system is connected to the exhaust system and to the ECM. A DEF tank is connected to the DEF injection system. An exhaust pipe branch is connected to the exhaust system. A heat exchanging apparatus is connected to the exhaust pipe branch and is configured to exchange heat from exhaust gas within the exhaust pipe branch to the DEF in the DEF tank. The heat exchanging apparatus may be an exhaust gas to DEF heat exchanger located at least partially within the DEF tank, or may be an exhaust gas to coolant heat exchanger connected to an engine coolant circuit and a coolant to DEF heat exchanger located at least partially within the DEF tank.

A valve (1) for controlling a flow of a fluid comprises: – a valve body having at least one first body part (2) made of a moulded plastic material; – a chamber for passage of the fluid (6), defined within the first body part (2) and comprising at least one fluid inlet (6a) and at least one fluid outlet (6b); – a valve seat (7) defined within the chamber for passage (6) of the fluid; – means for shutting off the fluid (8-9), which can be displaced relative to the valve seat (7) in order to control flow of the fluid; and – a compensation element prearranged for compensating a possible increase in volume and/or pressure of the fluid. The compensation element comprises a compensation body (26) made of an elastically deformable and/or compressible material, the moulded plastic material of the first body part (2) being stiffer than the elastically deformable and/or compressible material. The first body part (2) defines a tubular portion (23) that extends between the valve seat (7) and one of the inlet (6a) and the outlet (6b), within the chamber for passage of the fluid (6). The compensation body (26) is mounted within the chamber for passage of the fluid (6) so as to surround the tubular portion (23) at least partially.

One or more techniques and/or systems are disclosed for providing localized heating within an engine exhaust aftertreatment system. The localized heating includes DEF injector nozzle heating with a DEF dispensing system having a DEF fluid supply and a DEF injector fluidly coupled to the DEF fluid supply. The DEF injector includes a DEF injector nozzle. The DEF dispensing system further includes a DEF heater positioned in proximity to the DEF injector nozzle. The DEF heater is configured to locally heat an area surrounding the DEF injector nozzle.

An apparatus includes at least one tank having a tank bottom and a delivery unit for a liquid. The delivery unit is disposed in a chamber on the tank bottom and the chamber has at least one heater.

Disclosed is a method for heating liquid in a tank, including: providing at least one heating element of PTC type; providing a pulse width modulation regulator; measuring parameters including the temperature of the liquid and the voltage applied across the terminals of each heating element; heating the liquid without regulation, insofar as the temperature of the liquid is below a first threshold temperature; applying pulse width modulation regulation to the electrical supply to each heating element for which the supply voltage exceeds a predetermined threshold insofar as a measured temperature is above a second threshold temperature determined as a function of measured parameters; and determining a duty cycle for the modulation of the electrical supply to each heating element and transitioning progressively from a duty cycle of 1 to the determined duty cycle.

Systems and apparatuses include a diesel exhaust fluid tank, a first temperature sensor positioned within the diesel exhaust fluid tank and structured to provide first temperature information indicative of a first temperature, and a second temperature sensor positioned within the diesel exhaust fluid tank and structured to provide second temperature information indicative of a second temperature. The systems and apparatuses further include one or more processing circuits including one or more memory devices coupled to one or more processors, the one or more memory devices configured to store instructions thereon that, when executed by the one or more processors, cause the one or more processors to provide energy to a heating system based on the first temperature information and the second temperature information.

An automotive service liquid tank for receiving a service liquid of a motor vehicle, in particular an aqueous urea solution, has a tank wall that encloses a tank volume on the inside of the tank, wherein the tank has locally, by comparison with at least one other tank region, at least one region with enhanced thermal insulation, in order to influence a freezing behavior of the service liquid received in the tank in such a way that the service liquid, when the outside temperature drops, freezes later in the tank region with enhanced thermal insulation than in the at least one other tank region without enhanced thermal insulation. According to the invention it is provided that the enhanced thermal insulation is formed integrally with the tank wall.