Abstract: An arrangement and process for displacing the normally static, fixed rotational shifting speed of an internal-combustion engine in which the timing periods are changed in the form of a valve crossover between the intake valve and the exhaust valve, as a function of the dynamics of the acceleration operation, by a dynamics-dependent rotational differential speed. As a result, the process minimizes the mismatching between the rotational speed of the internal-combustion engine and the possible torque which occurs as a result of a time interval required for influencing the timing periods.

Abstract: The present invention relates to a loudspeaker diaphragm which is provided with a rear load and the vibration characteristic of which is improved in that the work to be performed for compressing the air behind the loudspeaker diaphragm is reduced. For this purpose, the loudspeaker diaphragm is provided with openings so that the air located behind the loudspeaker diaphragm can escape. At the same time, the introduction of the openings causes a decoupling of the vibrating diaphragm parts with respect to the frequency response when the loudspeaker diaphragm and the openings are suitably dimensioned, so that it is predominantly the inner part of the loudspeaker diaphragm which vibrates in the case of high notes, while the entire loudspeaker diaphragm vibrates in the case of low notes.

Abstract: The invention concerns a securing device for swivelling components of vehicles, in particular for engine hoods of motor vehicles. A securing hook which, after the release of the swivelling component, initially maintains a catch connection between this swivelling component and a fixed location mating component until the securing hook is pivoted into a release position by means of a manipulator. The manipulator, which is recessed when the swivelling component is locked, is automatically transferred into an accessible operating position by utilization of a forced advancement of the swivelling component relative to the mating component initiated by the release procedure. A control edge effectively connected to the manipulator and supported on the mating component is moved in the opening direction of the securing hook by sliding along the mating component.

Abstract: A passenger motor vehicle has a spoiler arrangement in the rear area which is formed by a flap integrated into the vehicle body. The flap is movable by an adjusting device from an inoperative position extending approximately flush with the vehicle body shell into a moved-out, operative position, and vice versa. When the spoiled arrangement is in its moved-in, inoperative position, a continuous smooth-surface transition is thereby achieved between the flap and the adjacent body. In the moved-out, operative position, a defined breaking away of the air current passing the fast back is ensured. The spoiler arrangement also has an air current breakaway element which is constructed separately from the flap. The element extends in the transverse direction of the vehicle, in the operative position of the spoiler arrangement, the element extends adjacent to a rear edge of the flap.

Abstract: In multi-valve engines, a partition wall dividing the intake channel into inlet-valve channels as an evaporation element in the intake channel of a cylinder head of an internal-combustion engine for improving the fuel-mixture formation and consequently for reducing the emission of hydrocarbons. The partition wall is electrically heated by a heating bar and is subjected to fuel substantially tangentially from a fuel injection located at the intake channel. As a result of this configuration, the flow behavior of the mixture is optimized in terms of the installation of evaporation elements in the intake channel, and an improved transmission of heat to the mixture and a homogeneous mixture formation are achieved. In addition, sealing problems between the intake channel and the surroundings are solved in a simple way.

Abstract: A ringing cadence filtering apparatus, which controllably prevents a subscriber device receiving ringing signals other than those having a prescribed cadence, is interposed betweeen a telephone line and a line device that has been assigned one of the telephone numbers of a multi-cadence service. It includes a controlled switching circuit through which a communication path between the telephone line and the line device connection port is normally interrupted. When a rining signal is present on the telephone line, whether or not the interruption is terminated and a path provided through the apparatus will depend upon whether the ringing cadence is that of the telephone number of the line device. To effect this determination, the telephone line input port is coupled to a plurality of ringing signal cadence detection circuits, each of which is responsive to a respectively different ringing cadence.

Abstract: A water purification and/or collection method uses a water-specific reaction with an anhydrous salt to separate organic and inorganic contaminants in a water supply. A stream of water vapor containing the contaminates is passed over a desiccant bed of anhydrous salt. Only the water in the stream reacts to form hydrates while the contaminates pass by in an air stream for disposal elsewhere. The fully hydrated bed is then regenerated by heat to free the purified water which is condensed.

Abstract: `Unintentionally` doped P type GaAs is grown on silicon by a metal organic chemical vapor deposition process in which the molecular ratio of arsenic to gallium in the growth ambient is reduced to a value that is sufficiently low to cause the creation of donor (As) site vacancies in the grown GaAs layer, which become occupied by acceptor (carbon) atoms in the metal organic compound, thereby resulting in the formation of a buffer GaAs layer having a P type majority carrier characteristic. Preferably, the silicon substrate has its growth surface inclined from the [100] plane toward the [011] direction is initially subjected to an MOCVD process (e.g. trimethyl gallium, arsine chemical vapor deposition) at a reduced temperature (e.g. 425.degree. C.) and at atmospheric pressure, to form a thin (400 Angstroms) nucleation layer. During this growth step the Group V/Group III mole ratio (of arsenic to gallium) is maintained at an intermediate value. The temperature is then ramped to 630.degree. C.

Abstract: `Unintentionally` doped P type GaAs is grown on silicon by a metal organic chemical vapor deposition process in which the molecular ratio of arsenic to gallium in the growth ambient is reduced to a value that is sufficiently low to cause the creation of donor (As) site vacancies in the grown GaAs layer, which become occupied by acceptor (carbon) atoms in the metal organic compound, thereby resulting in the formation of a buffer GaAs layer having a P type majority carrier characteristic. Preferably, the silicon substrate has its growth surface inclined from the [100] plane toward the [011] direction is initially subjected to an MOCVD process (e.g. trimethyl gallium, arsine chemical vapor deposition) at a reduced temperature (e.g. 425.degree. C.) and at atmospheric pressure, to form a thin (400 Angstroms) nucleation layer. During this growth step the Group V/Group III mole ratio (of arsenic to gallium) is maintained at an intermediate value. The temperature is then ramped to 630.degree. C.

Abstract: An intake duct in a cylinder head of an internal-combustion engine has a defined flow profile by which the flow rate of the gas flow is accelerated continuously, specifically up to a first intake duct segment of the intake duct which, as viewed in the flow direction, is situated in front of the valve stem. Subsequently, in a second intake duct segment, the flow rate of the gas flow is reduced continuously, whereby a lower approach flow rate of the valve is achieved. This results in an optimized volumetric efficiency which has a favorable influence on the performance and consumption of the internal-combustion engine.

Abstract: A digital information storage and read-out system in which digital elevation and cultural terrain data is read from a magnetic tape in compressed form into an intermediate memory which operates as a speed buffer memory. The data in the intermediate memory is read out to a reconstruction processor in which the compressed data is reconstructed and applied to a scene memory. A navigation computer determines the instantaneous position of a vehicle with respect to the terrain and controls the reading of data into the scene memory in blocks with the vehicle position occupying a center of scene location. In order to provide a heading up display of the terrain, the data in the scene memory is raed out at an angle to its north-up storage orientation and interlaced scanning of pixel data in the scene memory improves resolution and enhances line display.

Abstract: A locking device for a door lock in a motor vehicle has a locking position which can be selected, even by remote actuation, by an outer security element and in which the influence of outer and inner lock handles and of inner security elements on this locking position is prevented as a result of an interruption of the force flux at disengageable couplings.

Abstract: A fresh-air supply system for a vehicle ventilation device through an air inlet opening in a bonnet or hood swivellably attached to the vehicle bodywork, has a fresh-air duct which starts from the air inlet opening, the first duct portion of which is arranged underneath the air inlet opening on the bonnet and the second duct portion of which is arranged immovably on the bodywork. The two duct portions of the fresh-air duct are brought by the closing movement of the bonnet into a connection position in which a circumferential sealing flange of the first duct portion cooperates with a corresponding sealing flange of the second duct portion. The cooperating sealing flanges of the two duct portions, lying in an approximately horizontal plane, are covered over by the bonnet. The first duct portion is a water-collecting box surrounding the air inlet opening and having a drainage device.

Abstract: In an internal-combustion engine, in particular a diesel engine, with an exhaust-gas filter and an exhaust gas recirculation, the exhaust counter-pressure prevailing upstream of the exhaust-gas filter is used as one of a number of controlled variables for automatically controlling the exhaust gas recirculation. Since the exhaust-gas filter experiences flow resistance variations, particularly if it is a soot burn-off filter, which variations are independent of engine operation and consequently falsify the automatic control of the exhaust gas recirculation, the respective instantaneous exhaust-gas filter flow resistance must be measured as a correcting quantity and taken into account.

Abstract: In a spinning machine having a plurality of drafting units which each comprise several bottom rollers constructed as roller sections, it is provided that the sliver-carrying area of the bottom rollers is separated from the area receiving the clutch element and the driving wheels by means of a partition, the partitions of two adjacent drafting units being connected with one another.

Abstract: Switching apparatus including a switch is used for the control of a power-assisted convertible top of a motor vehicle which can be swivelled from a closed position into an opened position. For reasons of safety, the switch is disposed so that it can be used only when the motor vehicle is not moving. In preferred embodiments, the switch is disposed in a recess which is accessible only when a vehicle brake lever is in a brake engaged position.

Abstract: An arrangement for changing the valve timing of an internal-combustion engine has a camshaft, which can be rotated relative to a shaft driving it. The camshaft has a phase converter with a piston which is hydraulically acted upon on both sides. In the camshaft, an axial recess is arranged in which an inserted pipe separates two spaces from one another. An on/off valve fed from the oil circulating system, in one position, via one of the spaces, supplies the piston with pressure oil so that this piston is axially shifted into a first end position and in the process rotates the camshaft. In a second position, the piston, by way of the second space is axially pushed back by pressure oil.

Abstract: A process and device for heating the intake air in internal-combustion engines by means of a flame starting system is disclosed which contains at least one heater plug and has a control unit which supplies the heater plug with voltage for a specific preheating time.

Abstract: For a facility having one or several spinning machines and having at least one exchanging cart for the exchange of empty cans for full cans, it is provided that the exchanging cart is provided with devices for carrying out different exchange operations for making exchanges in the front or the back row which are triggered by signals as a function of depositing locations which are firmly assigned to the spinning points.

Abstract: An oil guiding housing is arranged below the crankcase of an internal-combustion engine and has a storage tank for lubricating oil and a housing part with a connection for an oil filter. In the pan part of the oil guiding housing situated directly below the crankshaft, a forward flow and return flow part for lubricating oil is integrated. The oil guiding housing ensures a targeted guiding of all lubricating oil flows and provides a good degassing of the oil.