Abstract: A heatable filter for a reducing agent includes a plastic housing that comprises a wall in which a heating resistor is disposed, and a filter insert which is attached to the wall.

Abstract: The invention relates to a heating system for a liquid conveyor system, particularly for a urea supply system of a catalytic converter of an internal combustion engine, comprising at least one first heater (4) for defrosting a liquid, and at least one filter heater (14) for heating a filter (5) for liquid filtering, wherein the filter heater (14) is formed by a heating section—designed as a resistance heating element—of an electrical connecting line (12) of the first heater (4).

Abstract: The invention relates to a tank heater, especially for a urea tank of an internal combustion engine, comprising a housing (2) in which at least one PTC element is arranged, an electrical connecting cable (3, 4) that is joined to the PTC element so as to conduct a heating current through the PTC element, and an intake pipe (5) for conveying liquid. At least one section of the electrical connecting cable (5) is embodied as a resistive heating element which is connected in a thermally conducting manner to the interior of the intake pipe (5).

Abstract: The invention relates to a urea supply system for a waste gas cleaning catalyst of an internal combustion engine, comprising a urea tank for the receiving of urea solution, a connecting line that connects the urea tank with a waste gas cleaning catalyst, a pump in order to pump urea solution via the connecting line from the urea tank to the catalyst, and a heating insert for the defrosting of frozen urea solution. According to the invention it is provided that the return line is configured and arranged in such a manner that, during operation, because of the urea solution discharged from the return line there is prevented the forming of an air gap between the heating insert and the frozen urea solution. The invention relates also to a heating insert for such a urea supply system.

Abstract: The invention relates to a reductant supply system for a waste gas cleaning catalyst of an internal combustion engine, in particular of a vehicle, comprising a reductant tank (3) for the holding of reductant, a connection line (4, 5) in order to convey reductant from the reductant tank (3) to a waste gas cleaning catalyst (2), and a pump (6) to pump reductant from the reductant tank (3) to the catalyst (2). According to the invention it is provided that at least one section of the connection line (4, 5) is configured as a corrosion-resistant metal pipe being provided with electrical terminal lugs (10, 11, 12, 13) in order to convey an electrical hating current through the connection line (4, 5) for the defrosting of reductant.

Abstract: The invention relates to a heating element with an electrical resistance heating element, at least one electrical connector line for supplying power to the heating element, a metal body with a connector, through which the at least one connector line and a duct seal, by means of which the connector opening is sealed. The duct seal is embodied with a glass body as a compression glass duct. The invention further relates to a heated expanding material working element for the operation of a thermostatic valve that includes a housing and a moving working rod extending from the housing.

Abstract: The invention relates to a urea supply system for a waste gas cleaning catalyst of an internal combustion engine, comprising a urea tank for the receiving of urea solution, a connecting line that connects the urea tank with a waste gas cleaning catalyst, a pump in order to pump urea solution via the connecting line from the urea tank to the catalyst, and a heating insert for the defrosting of frozen urea solution. According to the invention it is provided that the return line is configured and arranged in such a manner that, during operation, because of the urea solution discharged from the return line there is prevented the forming of an air gap between the heating insert and the frozen urea solution. The invention relates also to a heating insert for such a urea supply system.

Abstract: The invention relates to a heating system for a liquid conveyor system, particularly for a urea supply system of a catalytic converter of an internal combustion engine, comprising at least one first heater (4) for defrosting a liquid, and at least one filter heater (14) for heating a filter (5) for liquid filtering, wherein the filter heater (14) is formed by a heating section—designed as a resistance heating element—of an electrical connecting line (12) of the first heater (4).

Abstract: The invention relates to a tank heating system, in particular for a urea tank of an internal combustion engine, comprising: a housing (2) in which is provided at least one PTC element, an electric connection line (3, 4) that is connected to the PTC element in order to carry a heating current via the PTC element, an intake pipe (5) for the conveyance of fluid, wherein at least a section of the electric connection line (5) is configured as a resistance heating element, that is in heat-conducting conduction with the inside of the intake pipe (5).

Abstract: The invention relates to a heating element for thawing a fluid comprising at least one heating element, which is arranged in a housing (20), an intake pipe (21) made of plastic, which is fastened to the housing (20) for dipping into the fluid, at least one electrical connecting line (22, 23), which emanates from the housing (20) and which runs along the intake pipe (21). Provision is made according to the invention for the intake pipe (21) to support the at least one connecting line (22, 23).

Abstract: The invention relates to a reductant supply system for a waste gas cleaning catalyst (1) of an internal combustion engine, particularly a motor vehicle, comprising a reductant tank (3) for the storage of reductants, at least one electrically heatable fluid duct (6, 8) for the conveyance of reductant from the reductant tank (3) to a waste gas cleaning catalyst (1), a pump (5) to pump the reductant via the fluid duct (6, 8) from the reductant tank (3) to the waste gas cleaning catalyst (1), and a plug-in connection (10, 11) for connecting sections of the fluid duct (6, 8) in a fluid-conveying manner and/or connecting the fluid duct in a fluid-conveying manner to a component of the reductant supply system, wherein the plug-in connection additionally forms an electric connection line (12, 13, 14) which in operation conveys an electrical heating current for heating of the fluid duct (6, 8).

Abstract: The invention describes an electrical heating facility for the heating of liquid, in particular of washing liquid of a window washing facility, in a motor vehicle, comprising a metallic housing (2) with a first end (3) for immersion in the liquid to be heated and a second end (4) with an electrical connection terminal (5); at least one heating element (11) that is arranged in the housing (2); and at least one metallic heat conducting element (20) for conducting heat away from the housing (2). The invention provides the heat conducting element (2) as a stamped-out heat conducting plate comprising a slit that is used to slide it onto the housing (2). Moreover, the invention describes a liquid container with a heating facility, in which a heat contact surface of the heat conducting element (20) of the heating facility (1) rests against an intake fitting (31) that protrudes into the container.

Abstract: A method for the electrical insulation of an arrangement with an electrical functional element, such as a PTC element or a thermoelectric functional element is proposed, which is placed on a fastening part or in an electrically conductive casing. The inventive method is characterized in that the functional element together with the at least one connection, accompanied by the hollowing out of at least one contact surface to the fastening part, is so surrounded with an electrically insulating material that the latter engages on the fastening part or in the casing all around the contact surface. Thus, in a design and manufacturing simple manner, e.g. by extrusion, a comprehensive sealing of the electrical functional element can be achieved, so that during a subsequent covering with a material having a certain electrical conductivity, no shorting links are formed between the electrical connections of the functional element and the reference potential.

Abstract: Expansion or elastic material working element, particularly for operating a thermostatic valve, having a housing and a movable working pin led out of the housing, the housing containing expansion material and a heating device with an electrical resistance element applied to a support. More particularly for increasing the response speed of such a device, according to the invention the support has a cavity and the resistance heating element is a heating conductor wound around the support.

Abstract: The invention describes an electrical heating facility for the heating of liquid, in particular of washing liquid of a window washing facility, in a motor vehicle, comprising a metallic housing (2) with a first end (3) for immersion in the liquid to be heated and a second end (4) with an electrical connection terminal (5); at least one heating element (11) that is arranged in the housing (2); and at least one metallic heat conducting element (20) for conducting heat away from the housing (2). The invention provides the heat conducting element (2) as a stamped-out heat conducting plate comprising a slit that is used to slide it onto the housing (2). Moreover, the invention describes a liquid container with a heating facility, in which a heat contact surface of the heat conducting element (20) of the heating facility (1) rests against an intake fitting (31) that protrudes into the container.

Abstract: The electric heating arrangement (1) has a tubular housing (2) in which is provided at least one PTC heating element (20) and at least one pair of metallic heat dissipators (9) between which the at least one heating element (20) is clamped and which for this purpose each comprise a base portion (10) facing the at least one heating element and one or two curved legs (15) projecting from said base portion, which adapt themselves resiliently to the inner surface of the surrounding wall of the housing (2). The invention provides that the legs (15) taper toward their free ends and/or that the base portion (10) is thicker than the legs (15) projecting it.

Abstract: The electric heating arrangement (1) has a tubular housing (2) in which is provided at least one PTC heating element (20) and at least one pair of metallic heat dissipators (9) between which the at least one heating element (20) is clamped and which for this purpose each comprise a base portion (10) facing the at least one heating element and one or two curved legs (15) projecting from said base portion, which adapt themselves resiliently to the inner surface of the surrounding wall of the housing (2). The invention provides that the legs (15) taper toward their free ends and/or that the base portion (10) is thicker than the legs (15) projecting it.

Abstract: Expansion or elastic material working element, particularly for operating a thermostatic valve, having a housing and a movable working pin led out of the housing, the housing containing expansion material and a heating device with an electrical resistance element applied to a support. More particularly for increasing the response speed of such a device, according to the invention the support has a cavity and the resistance heating element is a heating conductor wound around the support.

Abstract: An apparatus for heating gases, particularly air, with a heating unit having a mounting part, at least one PTC component, at least one insulating frame part surrounding the latter, at least one contact plate and at least one insulating support. The PTC component is surrounded by the frame part being inserted in the mounting part and on at least one flat side rests a contact plate and is covered by an insulating support. Heat emission lamellas are mounted in a clamping manner on the heating unit to ensure an effective heat emission to the surrounding air or gas.

Abstract: For the better handling of PTC components during the assembly of a corresponding heating arrangement, in the case of a holding part for PTC components with an insulating frame and at least one contact plate, a contact plate is firmly connected to the insulating frame (12).