Abstract: A method for influencing the drive torque in a drive train comprising at least one electric motor at least indirectly driving one driven wheel, an internal combustion engine, and an electric machine allowing mechanical coupling to said engine operating a generator and a motor. Each selected motor allows electric coupling to the generator.The system creates a device for presetting a driver's desire for movement of the vehicle, coupled at least indirectly to an actuator of the internal combustion engine. According to the invention, the electric motors are operated as generators, at least upon release of the system for presetting a driver's desire. Drawn from the driven wheels by the electric motors is a first output portion that is generated in generator mode and fed to the electric machine for driving the internal combustion engine.

Abstract: An apparatus for gear shifting control with improved shift quality during gear shifting includes a gearbox unit containing at least one gear branch for power transfer via a hydrodynamic clutch. The hydrodynamic clutch can be coupled in series with a mechanical gearing part containing a device for realizing at least two speeds. In the course of power transfer via the hydrodynamic clutch during a gear shift operation between two mechanical speeds, the fill factor of the hydrodynamic clutch is so altered that a variable which at least indirectly characterizes the rotational speed of the primary bucket wheel of the hydrodynamic clutch is held substantially constant over a certain range of the gear shift operation.

Abstract: A drive unit for a motor vehicle having an engine; a transmission featuring a transmission housing; and a retarder featuring a rotor and a stator. A retarder shaft is provided that is supported by two bearings which are offset along the axial length of the retarder shaft. At least one of the bearings ("outside bearing") is supported by a wall ("outside wall") of the transmission housing. The retarder shaft protrudes freely beyond the outside wall of the transmission housing. Disposed on the retarder shaft, outside the outer bearing, on the outside wall, is a sealing component. The sealing component seals the clearance between the retarder (or pinion) shaft and the outside wall, preventing passage therethrough of the transmission oil and the operating medium of the retarder.

Abstract: A drive unit for a vehicle which includes an engine, transmission and hydrodynamic retarder having a rotor and a stator. A retarder shaft is rotatably supported by two bearings and extends through the housing of the transmission. A sealing element provides a seal between the retarder shaft and the transmission housing for separating the operating medium of the hydrodynamic retarder from either the transmission lubricant or the lubricant for one of the two shaft bearings.

Abstract: The invention relates to a rotor for an electric machine, specifically a transverse flow machine, comprising at least one support disk and at least one annular pole structure arranged on an end face of the support disk, coaxial to the rotor axis, and extending in axial direction. The pole structure comprises two adjacent rows, separated by an intermediate layer of magnetically and electrically nonconducting material (spacer ring), of the peripheral direction alternately magnetized magnet arrays with interposed collector or soft-iron elements. An end ring is coordinated with each pole structure. A plurality of magnet arrays features an inner and an outer magnet. The design of the collector or soft-iron elements adjoining a magnet array in the peripheral direction is such that they form in radial direction an inner stop and an outer stop for the magnet array.The invention is characterized in that an intermediate element is coordinated with a plurality of magnet arrays.

Abstract: The invention relates to a method for operating a drive unit for a conveyor system, in particular for a chain conveyor drive with at least one driving machine and at least one hydrodynamic clutch. The hydrodynamic clutch can be filled with operating medium in which, during continuous operation, the operating medium is guided in a closed circuit. The circuit includes an inlet line associated such that the operating medium losses in the circuit are compensated for and in which the temperature in the closed circuit is ascertained and compared with a permissible temperature value. The invention includes the feature that upon exceeding an permissible temperature value in the closed circuit, the inlet line and the outlet line are simultaneously connected in the circuit for the purpose of volumetric cooling.

Abstract: A method and apparatus for the operation of a vehicle with a plurality of electric motors includes an electric motor assigned to each wheel of an axle of the vehicle. Attached to each of the electric motors is a shiftable transmission (at least two-speeds). Shifting of a transmission is performed as a function of the total efficiency of the particular motor when reaching a predetermined shifting point. The transmissions attached to the electric motors are shifted, delayed in time. The shifting of the transmission attached to a first electric motor is monitored and the shifting of a transmission attached to a second motor is performed only when the shifting of the first transmission is completed. No interruption of the traction force occurs in the drive system.

Abstract: A drive unit for a motor vehicle including an internal combustion engine, a transmission and a hydrodynamic retarder. The retarder includes both a rotor and a stator wherein the rotor is mounted on the engine crankshaft or crankshaft journal and the stator is disposed between the crankcase and rotor.

Abstract: A method and device for speed control of a friction clutch in a drive unit having a drive engine and in which the friction clutch includes at least two clutch parts that can be pressed together for purposes of torque transfer. The first clutch part is coupled at least indirectly to the drive engine and the second clutch part can be coupled to the drive engine via the first clutch part. The contact force for the clutch parts required for torque transfer is automatically applied hydraulically at least on achieving the idling speed of the drive engine by rotational pressure of a rotating ring of hydraulic fluid.

Abstract: An apparatus and method for operating a drive installation unit for a vehicle which reduces environmentally harmful gases while improving drive acceleration and deceleration performance by integrating an electric motor and power converter with an internal combustion engine.

Abstract: The invention relates to a drive unit for a motor vehicle having a hydrodynamic retarder and a drive train with an engine and a transmission. The hydrodynamic retarder is comprised of a rotor impeller wheel and a stator impeller wheel and is coordinated with the main drive train in a manner such that the rotor impeller wheel of the hydrodynamic retarder is driven by the drive train. The operating fluid of the hydrodynamic retarder is a medium used for cooling the vehicle and a clutch is arranged between the drive train and the hydrodynamic retarder.

Abstract: The present invention involves a drive unit, specifically a drive unit for a motor vehicle having an internal combustion engine, a cooling system with fan and a hydrodynamic retarder with a stator, rotor and housing. The retarder is located within a space bounded on one side by the front of the crankcase, on a second side by the fan shaft which runs parallel to the engine shaft, and on a third side by the rear edge of the fan wheel. Viewed from the front, the retarder is substantially located within the fly circle of the fan wheel whereby the air flow generated by the fan wheel removes heat, generated by braking actions, from the housing of the retarder.

Abstract: An electrohydraulic hybrid drive for a plastic injection molding machine having at least one hydraulic actuator, at least one feed system for feeding the hydraulic fluid for actuation of the hydraulic actuators, at least one electric motor for operating the feed system for the hydraulic actuators, at least one further electric motor for driving the extruder screw of a plasticator device, a joint frequency convertor which actuates both of the electrical motors and a switching device circuited between the frequency converter and at least one of the electrical motors.

Abstract: A drive unit includes a hydrodynamic retarder having a rotor paddle wheel, a stator paddle wheel, and a housing surrounding the rotor and stator wheels. The unit includes a coolant cycle system for an internal combustion engine, the coolant for this coolant cycle also being a working medium of the retarder. The drive unit further includes a working medium container for the coolant. A first pipe connects a hydrodynamic center of the retarder to a valve. A second, leakage pipe is disposed between a working medium outlet of the retarder and the valve. A third pipe is disposed between the valve and the working medium container. The valve is designed such that in a first position, a conducting connection is established between the working medium container and the leakage pipe to provide for a pumping operation of the retarder. When the valve is in a second position, a conducting connection is established between the working medium container and the first pipe for a braking operation of the retarder.

Abstract: A drive unit comprising an engine, a transmission, a hydrodynamic retarder comprised of a rotor impeller wheel, a stator impeller wheel and a retarder housing enclosing both. A coolant circuit having coolant also serves as a working fluid of the retarder, and a pump impeller wheel is arranged coaxially with the rotor impeller wheel of the retarder which is used to circulate the coolant. Given this configuration, the space needed by the units which perform the pumping and braking functions of the drive unit are minimized while the efficiency of the pumping and braking functions are maximized.

Abstract: The present invention relates to a hydrodynamic clutch in a drive system, notably a turbo compound system. The hydrodynamic clutch includes a pump impeller and a turbine impeller which together form a toroidal working space. The turbine impeller is joined to a take-off shaft in torsionally fixed fashion and the pump impeller bears, via a bearing arrangement, on the take-off shaft. Coordinated with the toroidal working space is an operating medium supply system. The operating medium supply system includes an operating medium supply space which is arranged radially interior to the toroidal working space and bounded in the axial direction by the bearing arrangement and the contour of the turbine impeller. A central operating medium supply duct is arranged in the take-off shaft and extends in the take-off shaft in the axial direction at least up into the area of the center plane of the clutch. At least one distributing duct connects the central operating medium supply duct to the operating medium supply space.

Abstract: A transverse flux motor includes an outer stator having a plurality of outer stator soft iron elements which are substantially disposed with uniform separation from one another. The flux motor further includes an inner stator having a plurality of inner stator soft iron elements. The inner stator further includes at least one anchor winding. The motor has a rotor which, looking at it in a section perpendicular to the axis, is built of alternating magnets and soft iron elements. The outer stator is free from anchor windings. Also, the outer stator soft iron elements are disposed in such a way that at least one gap region is provided which is larger than the space provided between the remaining neighboring stator soft iron elements. At least indirect means are provided in this region to compensate magnetic end effects.

Abstract: The invention relates to a braking system, specifically for a motor vehicle, with a hydrodynamic retarder featuring a stator impeller wheel and a rotor impeller wheel, a working medium sump, and a control device for controlling the degree of working space filling of the retarder. The control device includes a proportional valve as well as a connecting line to the sump, and the sump communicates with the working space of the retarder by way of a riser duct. A venting duct communicable with the sump whereby air pressure generated by the non-braking operation of the retarder can be vented from the sump to the atmosphere thereby providing a pressure balance of the forces acting on the level of the working medium sump.

Abstract: A transverse flux machine includes an outer stator having a plurality of soft iron outer stator elements and an outer ring winding; an inner stator having a plurality of soft iron inner stator elements and an inner ring winding; and a rotor having a plurality of soft iron rotor elements and a plurality of rotor magnets, the rotor elements positioned in alternating relationship with the rotor magnets when viewed with respect to a plane perpendicular to an axis of the transverse flux machine. Also with respect to this plane, the rotor magnets, the inner stator elements, and the outer stator elements each have a width. The width of the rotor magnets narrows in a direction toward the inner stator. Also, the width of the inner stator elements is smaller than the width of the of the outer stator elements.

Abstract: The invention concerns a cooling air system for motorized vehicles, notably rail vehicles with diesel engines. The system includes a filter operating in a suction fashion and splitting the air being filtered in a clean-air flow and a dusty-air flow. A radiator follows the filter with a fan evacuating air through the radiator. A bypass line is provided which circumvents the radiator and acts on the dusty-air bushing of the filter with a vacuum of the fan or fans.