Abstract: A transfer case for motor vehicles with off-the-road gear comprises a casing, an input shaft, a first output shaft, coaxial with the latter, a second output shaft, offset therefrom, a speed-reduction unit, a coupling unit and an offset drive. The speed-reduction unit comprises a central drive gearwheel, connected in a rotationally fixed manner to the input shaft, a central driven gearwheel and at least two intermediate transmissions, rotatable about spindles fixed to the casing, each with two intermediate gearwheels, one of which meshes with the central drive gearwheel and the other meshes with the central driven gearwheel, a first driven shaft, connected in a rotationally fixed manner to the central drive gearwheel, and a hollow second driven shaft, connected in a rotationally fixed manner to the central driven gearwheel, which driven shafts lead to a coupling unit.

Abstract: A method for producing a semiconductor component with adjacent Schottky (5) and pn (9) junctions positions in a drift area (2, 10) of a semiconductor material. According to the method, a silicon carbide substrate doped with a first doping material of at least 1018 cm?3 is provided, and a silicon carbide layer with a second doping material of the same charge carrier type in the range of 1014 and 1017 cm?3 is homo-epitaxially deposited on the substrate. A third doping material with a complimentary charge carrier is inserted, and structured with the aid of a diffusion and/or ion implantation, on the silicon carbide layer surface that is arranged far from the substrate to form pn junctions. Subsequently the component is subjected to a first temperature treatment between 1400° C. and 1700° C. Following this temperature treatment, a first metal coating is deposited on the implanted surface in order to form a Schottky contact and then a second metal coating is deposited in order to form an ohmic contact.

Abstract: An automatic tire-filling apparatus for a motor vehicle has an electronic controller which, in response to sensors for the operating state of the vehicle, controls pneumatic valves for the tires and a compressor to enable the tire pressure to be matched to such conditions as travel speed, vehicle load, roadway conditions and terrain. The compressor is in a normal operating state part of a closed system with the tire and the pressure reservoir and is directly connected to the pressure reservoir without the intermediary of a switching element.

Abstract: A vehicle communication system has at least one processor unit (1), arranged in the vehicle, for controlling applications, a plurality of different data sources (2, 4, 5, 6, 8) which are connected to the processor unit (1), and a plurality of operator consoles (9) which are connected to the processor unit (1). Access rights with different degrees of priority to the applications are allocated to the individual operator consoles (9).

Abstract: The invention relates to a method for detecting parameters characterizing the driving behavior of a vehicle, according to which at least one vehicle speed parameter, which represents at least one parameter (?y) describing the lateral velocity, and/or a roadway parameter describing the quality and/or the course of the roadway is/are detected at least according to one parameter (ax) describing the longitudinal acceleration of the vehicle, a parameter (ay) describing the lateral acceleration of the vehicle, a parameter ({dot over (?)}) describing the yaw rate of the vehicle, a parameter (?, ?Rad,i) characterizing the steering lock of the steered wheels, and parameters (?Rad,i) describing the rotation speeds of the vehicle wheels by means of an estimation method. A parameter (vx) describing ongitudinal velocity of the vehicle is detected as an additional vehicle speed parameter.

Abstract: A method and an arrangement are provided for the return of brake fluid from a pedal travel simulator into the auxiliary brake circuit of an electrohydraulic brake system, and to an electrohydraulic brake system and a tandem master brake cylinder. For this purpose, in an emergency, the return line of the pedal travel simulator, which is connected to the brake fluid reservoir during normal operation, is separated from the unpressurized brake fluid reservoir and instead connected to the delivery side of the electrohydraulic pressure supply system or at least to the pressure accumulator of the electrohydraulic system.

Abstract: The invention refers to one of a number of nodes of a communication system. The nodes are connected to a communication media for transmitting data among the nodes. Said one node comprises a communication controller, across which the node is connected to the communication media, and a bus guardian for controlling access of the communication controller to the communication media. In order to provide a cheap but nevertheless reliable way for monitoring the synchronized clock signal of a node of a communication system and in particular for detecting deviations of the synchronized clock signal it is suggested that a synchronized clock signal from the communication controller is made available to the bus guardian, and that the bus guardian comprises means for monitoring the synchronized clock signal using a bus guardian internal clock signal, which is generated by means of an electronic circuit and which is less accurate than the synchronized clock signal to be monitored.

Abstract: A fastening system has a mounting plate of substantially greater area than a flange of a part being attached to a hardened plate. This mounting plate is sandwiched between the flange and an outer face of the hardened plate and has an outer periphery spaced well outward of the flange. A plurality of nuts bear on an inner face of the hardened plate in line with the flange. Respective bolts extend through the flange, mounting plate, and hardened plate into the nuts and press the flange and mounting plate against the outer face of the hardened plate. A weld at the outer periphery secures the mounting plate to the hardened plate.

Abstract: In a module for detecting the docking of a vehicle, changes of vehicle engine torque and rotational wheel speed of the vehicle are determined as a function of time. It is checked whether the change of the engine torque is >>0 and the change of the rotational wheel speed is <<0. If both of these conditions are met, docking is detected and the vehicle can be braked. The module may be implemented in the form of software.

Abstract: A tire-filling system has an electronic control unit response to the tire pressure and the vehicle operating conditions for automatically operating pneumatic tire-filling valves to increase or reduce the tire pressure to setpoint values determined by the electronic control unit and matching the driving conditions. The pressure is delivered from a variable volume source in which a control element increases or decreases the volume. The system can be operated as an open system or a closed system.

Abstract: Hybrid drive containing a clutch between an engine power-output shaft (4) and a transmission power-input shaft (16) arranged axially with respect to the said power-output shaft; a first electric machine (6) connected to the engine power-output shaft (4) in a torque-transmitting manner; a second electric machine (14) connected to the transmission power-input shaft (16) in a torque-transmitting manner; preferably also a torsional vibration damper (8), which is connected in a rotationally fixed manner to the engine power-output shaft (4), the first-electric machine (6) being connected to the engine power-output shaft (4) in a torque-transmitting manner, ahead of the torsional vibration damper (8) in terms of the direction in which the torsional vibration damper (8) transmits the power of the propulsion drive engine. The parts of the hybrid drive are nested axially one inside the other.

Abstract: In a cooling system for a motor vehicle engine having indirect charge air cooling, including a general cooling circuit for cooling a power-generating unit which comprises a coolant pump and a main coolant cooler, and an additional cooling circuit which branches off at an output point from the general cooling circuit and returns to the latter at an in-coupling point between the main coolant cooler and the coolant pump and contains an additional coolant cooler, means are provided for sensing the coolant temperature in an area where the coolant of the general cooling circuit and of the additional cooling circuit are mixed and also means for controlling the coolant flow as a function of the sensed coolant temperature.

Abstract: A power-split transmission for motor vehicles with off-road travel consists of a case (1), of an input shaft (2), of a first output shaft (3) coaxial with the latter, of a second output shaft (4), of a reduction unit (5), of a clutch unit (6) and of an offset drive (7).

Abstract: A guidance method for guidance systems is disclosed. The method includes forming a target track point with a target tracker. The method corrects the track point with a manual correction signal. A speed of rotation of the line of sight is determined with the target tracker. A track control system dynamic model is provided for forming an estimated value for the rotation speed of the line of sight. The estimated value for the rotation speed of the line of sight is formed from the determined speed of rotation of a line of sight corrected with a correction value generated with the dynamic model of the track control circuit based on the manual correction signal. The estimated value of the speed of rotation of the line of sight is then used for guidance.

Abstract: A system for reducing the infrar d visibility of an amphibious vehicle that generates hot exhaust gas when it is in a body of water has a nozzle directed downward at and closely juxtaposed with a surface of the body of water. This nozzle expels the hot exhaust gas downward at the surface so as to form a water-droplet cloud that cools the gas and masks the vehicle. the nozzle is set at an angle of at most 60° to vertical.

Abstract: In a valve-controlled internal combustion engine having a cylinderhead with an exhaust gas passage extending from a combustion chamber and a secondary air duct for supplying secondary air to the exhaust gas passage downstream of an exhaust valve opening, the exhaust gas passage includes a projection just downstream of the exhaust valve opening, which projection extends in the direction of flow of the exhaust gases and forms, with the exhaust passage wall, a pocket which is open towards the exhaust passage and into which the secondary air passage opens for supplying secondary air to the exhaust gas.

Abstract: A dual temperature control system as part of an engine cooling system. In one aspect, a valve is regulated as a function of engine load and disposed in a by-pass line between the radiator and the coolant pump. The valve is designed to normally block the by-pass line, but permits coolant to by-pass the thermostat and be conveyed from the radiator to the engine when the load of the engine approaches a wide-open-throttle condition. In another aspect, both high-temperature and low-temperature thermostats are employed and a normally closed valve is actuated when the load of the engine approaches a wide-open-throttle condition to permit coolant to be conveyed through the low-temperature thermostat and on to the engine.

Abstract: A method for detecting a low-charge state in an air conditioning system. In one aspect, the temperature/pressure of the discharge of the condenser is measured to determine whether a low-charge state exists in the refrigeration system by calculating the degrees of subcooling of the refrigerant and comparing that to a predetermined minimum value. In another aspect, the temperature/pressure of the discharge of the compressor is measured to determine whether a low-charge state is indicated by calculating the degrees of superheat of the refrigerant and comparing that value with a predetermined maximum value. An air conditioning checker is also disclosed.

Abstract: An inflatable assembly for protecting occupants of a vehicle, comprising a multi-stage inflating device, and an inflatable device having a plurality of gas channels that are separately inflatable and operatively connected with the inflating device.