Abstract: A hardtop convertible vehicle has a front roof part, a central roof part and a rear roof part that includes C-pillars and a rear window. The roof parts are connected to one another in an articulated manner and are movable between a closed roof position and an open roof position by means of a displacing device. In the open roof position, the roof parts are located in a trunk of the vehicle, with the rear roof part and the central roof part lying one above the other. The rear window of the rear roof part is mounted in an articulated manner in relation to the C-pillars of the rear roof part such that it is pivoted in relation to the C-pillars during the movement of the roof parts between the closed roof position and the open roof position and assumes a position with its curvature in the same direction as the central roof part. In the open roof position, the front roof part lies outside the rear roof part and the central roof part, either along a backrest or along a motor vehicle tank.

Abstract: An audio system for a motor vehicle includes a plurality of speaker units to which audio signals from various audio signal sources are supplied. The supply between at least one audio signal source and at least one speaker unit is at least partially redundant, including a primary supply and a secondary supply.

Abstract: A driver's cab supporting structure for a commercial vehicle, particularly a heavy commercial vehicle, has a safety cell arranged in a driver's cab with a front region, and a rear side facing a loading region. A seating region is surrounded by a stiff, cage-like safety cell to which a deformation region for absorbing deformation energy is connected, between seating region and loading region.

Abstract: A method for acquiring a position (1) of a motor vehicle (2) on a road (3), road geometric data (4) and travel data (5) being recorded. First position data (1) of the motor vehicle (2) relative to the road (3) is calculated from the recorded road geometric data (4) and travel data (5). Road course data (6) is calculated from the road geometric data (4) and the travel data (5), the second position data (7) of a following vehicle (21) which is following the vehicle (2), relative to the vehicle (2), is recorded, and third position data (8) of the following vehicle (21) relative to the road (3) is calculated from the road course data (6), the first position data (1) of the vehicle (2) and the second position data (7) of the following vehicle (2?).

Abstract: An electronic key includes a key housing that has a suspension eyelet near its periphery, with the suspension eyelet having a deployed use position and a stowed non-use position. The suspension eyelet is held by a guide arm which is movable such that the suspension eyelet is lowered into a receiving space in the key housing where it is inaccessible in its non-use positional. It can also be moved out into the use position for the purpose of suspending the electronic key.

Abstract: A lightweight valve (1), in particular for internal combustion engines, is provided, with a valve stem (3), with a hollow valve cone (5) and with a valve disk (7) closing the valve cone (5), the valve disk (7) being provided with a recess (23) on its flat side facing the valve cone (5). The lightweight valve (1) has a valve cone (5) projecting with its end region of greater diameter into the recess (23).

Abstract: The invention relates to a driving assistance apparatus (19) for cruise control for a vehicle (10, 27). It is proposed that the driving assistance apparatus have receiving means (25) for reception of a danger alarm (54, 70), which is transmitted without the use of wires at least outside the vehicle (10, 27), and/or of a switch-off command (35), which is formed by a transmitting/receiving device (30) in the vehicle (10, 27) from the danger alarm (54, 70), and in that the apparatus is designed for self-deactivation as a function of the danger alarm (54, 70) and/or cannot be activated as a function of the danger alarm (54, 70).

Abstract: Poor visibility at night is a tiring and dangerous situation in traffic, feared by many drivers. As a result of poor visibility, the frequency of accidents at night is significantly higher than during the day with good visibility conditions. Cars are thus prospectively fitted with night vision systems, in order to increase safety in traffic. A night vision system used for this purpose generally comprises an illumination unit for illuminating the environment surrounding the vehicle, an image recording unit for collecting environmental data, and an image processing unit for evaluating the environmental data. So that the operation of the night vision system can be adapted to different situations, it must be designed in a flexible manner. To this end, the individual components of the night vision system must be able to be operated in different combinations. In order to achieve this, the components of the night vision system can be individually controlled by means of at least one control signal.

Abstract: A safety valve for a compressed gas storage tank (12) includes a relief conduit (16, 18) provided for fluid connection to an interior chamber (14) of the compressed gas storage tank (12), and a closing member (22) sealing the relief conduit (16, 18); a retaining device (24) being provided which, in a normal condition, locks the closing member (22) in place and which, in safety-critical conditions, opens a cross-sectional flow area (30) in such a manner that the relief conduit (16, 18) is open to the atmosphere. In accordance with the present invention, the closing member (22) is connected to an adjustor (26) which adjusts the cross-sectional flow area (30) of the relief conduit (16, 18) as a function of an upstream interior pressure.

Abstract: A method for producing a double-chamber hollow profile having chamber walls integrally joined to one another, in which a tubular hollow profile blank having a single hollow space is bent to form two branches which run at least virtually parallel to one another, and inserted into a internal high pressure forming tool to be expanded into a final shape by a high internal fluid pressure until the opposing walls of the branches bear against one another and the remaining walls bear against the recess cavity of the forming tool.

Abstract: The invention relates to a method for operating a diesel engine in which an air ratio (?) of the fuel which is to be burnt and of the combustion air supplied is set by a control unit (14) according to predetermined values. When a value (15) which is predetermined as a switching criterion is recorded, the control unit (14) switches to a special operating mode for regeneration of a catalytic converter (22) and sets the fuel/air ratio according to predetermined values for this operating mode. To achieve more effective regeneration of the catalytic converter, according to the invention it is provided that at least one afterinjection, which is separated in time from a main injection, of fuel which is also to be burnt takes place in the special operating mode.

Abstract: A transverse differential and a welding method for its producing, in which a differential bolt and a differential case are fixedly connected to one movement-wise. For this purpose, a bolt/case welding is produced in which, material of a differential bolt is fused and is transported or entrained into the preferably likewise fused material of the differential case, and fused entrained material of a differential bolt is solidified in the region of the differential case.

Abstract: In an exhaust gas treatment system and a utility vehicle having an exhaust gas treatment system, the exhaust gas treatment system includes a particle reduction unit, a reducing agent tank and a nitrogen oxide reduction unit of a modular design, wherein the reducing agent tank is arranged between the particle reduction unit and the nitrogen oxide reduction unit and extends around a connecting line extending between the particle reduction unit and the nitrogen oxide reduction unit, and in a utility vehicle, the associated exhaust gas treatment system is arranged within a predefined cuboid envelope volume on a support structure which is attached to a frame member of the vehicle.

Abstract: In a multi-cylinder internal combustion engine and a method for operating a multi-cylinder internal combustion engine, cylinders are assigned an exhaust line and, in each case, a gas inlet valve and a gas outlet valve which are used for the charge cycle. At least one of the cylinders of the internal combustion engine has an additional outlet valve through which, in the opened state, a flow connection can be established between the combustion chamber and the exhaust line. At least one of an exhaust gas composition and an exhaust gas temperature is changed compared to the normal operating mode, and regeneration of the exhaust gas cleaning unit can be set in conjunction with a regeneration operating mode for regenerating an exhaust gas cleaning unit which is arranged in the exhaust line by activating the additional outlet valve of at least one cylinder.

Abstract: A method retains exhaust gas in the combustion chamber of an internal combustion engine and compresses the exhaust gas during a charge change. A first fuel quantity is injected into the retained exhaust gas by direct fuel injection. A second fuel quantity is subsequently fed to the combustion chamber so that a homogeneous fuel/air mixture is obtained in the combustion chamber. An auto-ignition time of the fuel/air mixture which is formed from the first and second fuel quantities is set as a function of a quantity ratio of the first fuel quantity to the second fuel quantity.

Abstract: A process for producing a shaped part of a pre-form of hardenable and heat formable steel sheet, by means of heat treatment with cold deforming tools, in which by the heat forming a hardened component is produced, which exhibits a martensitic and/or banitic microstructure, wherein the hardened component is tempered subsequent to heat forming so that a shaped part is formed which exhibits, at least in areas, a higher yield strength and a pronounced break limit compared to the hardened component.

Abstract: A vehicle terminal for a logistics management system, having a display unit (7), a vehicle computer (6) for detection and processing of relevant data, a communication unit (8) for data interchange with an associated disposition center (2), which transmits job data records to the vehicle terminal, with the vehicle terminal transmitting job-relevant data to the disposition center (2) after processing a job, and to an associated logistics management system. The vehicle computer (6) is designed to receive and to process job data records from at least one further center (3.1, 3.2) via the communication unit (8), which job data records each include data relating to a job location and a job booking, and to create a job list, in which case the job data records and the job list can be displayed to the driver via the display unit (7).

Abstract: A steering system (1) of a vehicle, having a steering wheel (2) which is connected mechanically to the steerable vehicle wheels (11) via a steering column (3). A superimposition actuator (26) which can be actuated independently of the driver by a control device (25) is provided for generating a superimposition variable (U). A superimposition device (6) superimposes a steering wheel variable (?H) which describes the steering actuation of the steering wheel (2) and the superimposition variable (U) to form an output variable. A steering actuator (19) sets a steering angle (?L) at the steerable vehicle wheels (20) as a function of the output variable. An actuating device (27) is provided which is actuated by the control device (25) in order to generate an actuating device torque (MS) which acts on the steering column.