Abstract: In an internal combustion engine having a turbocharger and a compressor, a discharge point of a tank ventilation system is provided in the intake passage of the internal combustion engine upstream from the turbocharger or the compressor. A Venturi nozzle is situated between the discharge point and a tank venting valve of the tank ventilation system. A defect or a detachment of the line between the Venturi nozzle and the discharge point is detectable with the aid of a change of an adaption value and/or of a correction factor in a control unit of the internal combustion engine or in a computer.

Abstract: The invention relates to a hydraulic hybrid drive system (1) for a motor vehicle, comprising driven wheels (2), which have friction brakes (3) for applying a friction braking torque to the driven wheels (2), and a continuously adjustable hydraulic transmission (4), which has a motor-side hydraulic machine (5) and a wheel-side hydraulic machine (6) having a direct fluid connection to the motor-side hydraulic machine, wherein the hydraulic machines (5, 6) are connected in series and to the driven wheels (2) of the motor vehicle in regard to driving, such that the hydraulic machines (5, 6) can be operated both as hydraulic pumps and as hydraulic motors, and at least one hydraulic fluid energy storage device (7), which is connected to the hydraulic transmission (4) in regard to fluid flow, wherein the motor-side hydraulic machine (5) is connected to the wheel-side hydraulic machine (6) in regard to fluid flow by means of a high-pressure hydraulic line (8) and a low-pressure hydraulic line (9).

Abstract: In an internal combustion engine having a turbocharger and a compressor, a discharge point of a tank ventilation system is provided in the intake passage of the internal combustion engine upstream from the turbocharger or the compressor. A Venturi nozzle is situated between the discharge point and a tank venting valve of the tank ventilation system. A defect or a detachment of the line between the Venturi nozzle and the discharge point is detectable with the aid of a change of an adaption value and/or of a correction factor in a control unit of the internal combustion engine or in a computer.

Abstract: A collapsible antenna assembly for portable, outdoor satellite communication systems is provided. When connected to complementary electronics, the apparatus enables the transmission and reception of communications signals from any selected terrestrial location by means of a satellite link. The apparatus is implemented in a physical form that minimizes the overall physical dimensions such that portability is improved. The apparatus consists of an antenna reflector, transmit assembly, feed horn assembly, a boom, a tripod, and a mounting platform, which permits the antenna reflector to be oriented to operate with any selected satellite. The entire apparatus can be folded and disassembled to fit inside of a suitcase.

Abstract: The present invention is a waveguide transition and port structure, comprised of two distinct rectangular waveguide sections, with one section angularly displaced with respect to the other by 45 degrees about a common longitudinal axis. The orientation of the two waveguide sections enables the waveguide transition and port structure to rotate a polarized signal by 45 degrees such that, when coupled to an external device, as part of an antenna or other receiving or transmitting apparatus, either vertical or horizontal polarization of the signal can be effected with equal degrees of efficiency and without the need to change or reorient components, such as waveguides or twists.