Abstract: A method and a device for controlling the active discharge of a high-voltage intermediate circuit via a discharge resistor.

Abstract: In some examples, a printing press includes a support element with a circulatingly movable contact surface for contacting a printing substrate. An ink jet print head includes an ejection opening arranged to be directed at the support element. Additionally, the printing press includes a charging device that includes a charging electrode, which is arranged to be directed at the contact surface. The charging device further includes a counter-electrode, and the movable contact surface is at least partially arranged between the charging electrode and the counter-electrode of the charging device. A smallest distance between the charging electrode and the movable contact surface is greater than a smallest distance between the ejection opening of the ink jet print head and the contact surface. For example, the smallest distance between the charging electrode and the contact surface may be at least 50 mm.

Abstract: In some examples, a printing press includes a support element with a circulatingly movable contact surface for contacting a printing substrate. An ink jet print head includes an ejection opening arranged to be directed at the support element. Additionally, the printing press includes a charging device that includes a charging electrode, which is arranged to be directed at the contact surface. The charging device further includes a counter-electrode, and the movable contact surface is at least partially arranged between the charging electrode and the counter-electrode of the charging device. A smallest distance between the charging electrode and the movable contact surface is greater than a smallest distance between the ejection opening of the ink jet print head and the contact surface. For example, the smallest distance between the charging electrode and the contact surface may be at least 50 mm.

Abstract: A method and a device for controlling the active discharge of a high-voltage intermediate circuit via a discharge resistor.

Abstract: A safety-relevant system (S) in a vehicle comprises an electrical unit (EE) with at least one signal line input (SE). The signal line input (SE) is connected to a signal line. The electrical unit (EE) additionally comprises a supply connection (VA) for feeding the electrical unit (EE) with electrical energy. For supplying electrical energy to the electrical unit (EE), the signal line is in addition electrically coupled to the supply connection (VA) of the electrical unit (EE).

Abstract: A printing assembly has at least one transport direction defined by a transport path provided for the transport of printing material through the printing assembly. The printing assembly has at least one first support body on which at least one first image-generating device is arranged and which at least one first support body extends both in the transport direction and in a transverse direction that is oriented horizontally and orthogonally to the transport direction. The printing assembly has at least one first temperature-control device for the targeted generation of a temperature difference between a first point of the at least one first support body and at least one second point of the at least one first support body. That second point is spaced apart from the first point, at least in the transport direction.

Abstract: A printing assembly has at least one transport direction defined by a transport path provided for the transport of printing material through the printing assembly. The printing assembly has at least one first support body on which at least one first image-generating device is arranged and which at least one first support body extends both in the transport direction and in a transverse direction that is oriented horizontally and orthogonally to the transport direction. The printing assembly has at least one first temperature-control device for the targeted generation of a temperature difference between a first point of the at least one first support body and at least one second point of the at least one first support body. That second point is spaced apart from the first point, at least in the transport direction.

Abstract: A top tool and a bottom tool which can be set relative to one another along an axis perpendicular to a workpiece plane are provided in an apparatus for punching and welding plastic parts. A punch die and a sonotrode are fastened to one of the tools.

Abstract: A safety-relevant system (S) in a vehicle comprises an electrical unit (EE) with at least one signal line input (SE). The signal line input (SE) is connected to a signal line. The electrical unit (EE) additionally comprises a supply connection (VA) for feeding the electrical unit (EE) with electrical energy. For supplying electrical energy to the electrical unit (EE), the signal line is in addition electrically coupled to the supply connection (VA) of the electrical unit (EE).

Abstract: A top tool and a bottom tool which can be set relative to one another along an axis perpendicular to a workpiece plane are provided in an apparatus for punching and welding plastic parts. A punch die and a sonotrode are fastened to one of the tools.

Abstract: A method is provided for determining the amount of ammonia which is stored in a storage container by a chemical bond to a solid storage medium, in particular a salt of an earth alkaline metal or the like, and which can be released by supplying heat in order to be supplied to a catalytic exhaust gas purification device of an internal-combustion engine. The storage medium functions as a dielectric of an electric capacitor and the stored amount of ammonia is inferred from the capacity of this capacitor. One wall of the housing of the storage container functions as a first electrode of the capacitor, and, within the storage container, at least one additional electrode is arranged such that at least a partial amount of the storage medium forms the dielectric. The storage container may have an essentially cylindrical shape. Several cylindrical electrodes can be arranged in a coaxial manner.

Abstract: A method is provided for the selective catalytic reduction of nitrogen oxides in the exhaust gas of internal-combustion engines in motor vehicles. An electronic control device, by way of a signal of a sensor in a reducing agent tank, detects whether a reducing agent is in a frozen state. The electronic control device applies heating current to a PTC heating element in the reducing agent tank if the reducing agent is in a frozen state, calculates the resistance of the PTC heating element from the onboard voltage of the motor vehicle and the heating current, and compares the resistance with a first defined resistance threshold and/or with a first defined gradient threshold of the increase in resistance. The amount of reducing agent fed into the exhaust gas from the reducing agent tank is reduced if the first resistance threshold and/or the first gradient threshold is exceeded.

Abstract: A method is provided for determining the amount of ammonia which is stored in a storage container by a chemical bond to a solid storage medium, in particular a salt of an earth alkaline metal or the like, and which can be released by supplying heat in order to be supplied to a catalytic exhaust gas purification device of an internal-combustion engine. The storage medium functions as a dielectric of an electric capacitor and the stored amount of ammonia is inferred from the capacity of this capacitor. In the case of a corresponding storage container, at least one wall of the housing of the storage container functions as a first electrode of the capacitor, and, within the storage container, at least one additional electrode of this capacitor is provided and arranged such that at least a partial amount of the storage medium forms the dielectric of this capacitor. The storage container may have an essentially cylindrical shape and, as required, several cylindrical electrodes can be arranged in a coaxial manner.

Abstract: A method is provided for the selective catalytic reduction of nitrogen oxides in the exhaust gas of internal-combustion engines in motor vehicles, reducing agent being fed into the exhaust gas of the internal-combustion engine from a reducing agent tank internal to the vehicle. An electronic control device, by way of a signal of a sensor in the reducing agent tank, detects whether the reducing agent is in a frozen state. The electronic control device applies heating current to a PTC heating element in the reducing agent tank if the reducing agent is in a frozen state, calculates the resistance of the PTC heating element from the onboard voltage of the motor vehicle and the heating current, and compares the resistance with a first defined resistance threshold and/or with a first defined gradient threshold of the increase in resistance. The amount of reducing agent fed into the exhaust gas from the reducing agent tank is reduced if the first resistance threshold and/or the first gradient threshold is exceeded.

Abstract: A reducing agent tank, which is intended for providing a reducing agent to an exhaust gas system and which has a first tank for storing the reducing agent, a second tank for storing the reducing agent, a line for recirculating the reducing agent from the second tank into the first tank and a check valve for closing the line in a selective fluid-tight manner, includes a diagnostic device, with which an incorrect function of the check valve can be detected.

Abstract: An apparatus for the connection of articles via at least one connection element plasticizable by heat includes a cap, in particular a heatable cap, which is movable toward and away from the connection element and which has a shaft, for the forming of a rivet head at the connection element and having means for the cooling of the cap by means of a cooling fluid, in particular air. A first variant is characterized in that the shaft of the cap has a central cooling fluid supply passage preferably reaching up to and into the cap body and a plurality of respective at least generally radially outwardly directed cooling fluid passages starting from the central cooling fluid supply passage are provided within the cap body. Provision can alternatively be made that the cap is manufactured at least partly from porous, air-permeable material, in particular ceramic material, and the shaft of the cap is provided with a cooling fluid supply bore preferably reaching up to and into the cap body.

Abstract: A device includes a gripping element of a device door. The gripping element is configured in such a manner that it can be displaced in relation to the device door when the door is displaced. The device improves operational comfort, in that the movement of the gripping element can be adapted to the movement of the hand of a user.

Abstract: A heatable roll having a smooth, hard surface for the production and/or treatment of a fibrous web, in particular a paper, board or tissue web, comprises a base tube made of weldable steel, to which at least one welded layer which has a higher hardness than the base tube is applied. Moreover, a process for the production of such a roll is described.

Abstract: A reel winding arrangement includes a contact roller, first and second winding position groups located on a first and second sides of the contact roller, and a core feeding device which includes a longitudinal transport device and a core moving device. The core moving device also includes at least one carrier arrangement positioned to extend over an axial length of said contact roller and at least one pivotable holding arm. A method of winding reel cores includes forming first and second winding positions on first and second sides of a contact roller, loading a plurality of reel cores on a longitudinal transport device, and pivotably feeding the plurality of reel cores from the longitudinal transport device to one of said first winding position and said second winding positions.

Abstract: Roll winder and process for operating the same. The roll winder includes a roll retainer adapted to hold a wound roll in the region of a wound roll pivot axis, and a support apparatus that includes a plurality of roll bodies having axes extending substantially parallel to the pivot axis of the wound roll. The plurality of roll bodies are formed into a plurality of roll pairs, and the roll pairs are pivotably mounted for movement around a shaft extending substantially parallel to the pivot axis of the wound roll. The process includes positioning one of the roll pairs against a winding tube, pressing the winding tube against a central roll with the one roll pair, guiding a web onto the winding tube and rotating the winding tube to form a wound roll, and pivoting the one roll pair so that all of the plurality of roll pairs are positioned beneath the wound roll.