Abstract: A medical imaging apparatus, in particular a magnetic resonance apparatus, has a data acquisition scanner, a patient receiving region, which is surrounded at least partially by the data acquisition scanner, and an illumination unit. The illumination unit has a light-generating unit and a light-emitting unit, and the light-generating unit is situated outside the patient receiving region.

Abstract: A device and a method for controlling an internal combustion engine with an air system are described. At least one variable characterizing the air system is determined on the basis of at least one correcting variable and/or at least one measured variable characterizing the state of the ambient air, using at least one model. The model includes at least one first and one second submodel. Using a submodel, the output variables are determined on the basis of input variables. As input variables of the first submodel, besides at least one output variable of a second submodel, the correcting variable and/or the measured variable are additionally taken into account.

Abstract: A method and device are for controlling an internal combustion engine. Using at least one model, an oxygen quantity flowing into the internal combustion engine is determined on the basis of at least one manipulated variable and at least one measured variable which characterizes the condition of the air in an intake manifold. The oxygen quantity is determined on the basis of at least one temperature variable, one pressure variable, one speed variable, one fuel-quantity variable and one air variable.

Abstract: The turbine of the exhaust gas turbocharger, which is located in the exhaust gas channel of the internal combustion engine, has a variable geometry. The regulation of the boost pressure is performed via an adjustment of the turbine geometry. A very rapid response of the boost pressure regulation to a variable load, with an overshoot of the specified value, which would damage the turbocharger, being avoided, is achieved by determining a manipulated variable for the turbine geometry as a function of the exhaust gas back pressure prevailing in the exhaust gas channel upstream from the turbine.

Abstract: A method and a device for stabilizing a road vehicle, particularly a passenger car, having a trailer pulled by the road vehicle, the road vehicle being monitored with respect to snaking movements, and upon detection of a snaking movement, a yaw moment that is essentially in phase opposition to the snaking movement being applied automatically to the road vehicle.

Abstract: The turbine (4) of the exhaust gas turbocharger, which is located in the exhaust gas channel (3) of the internal combustion engine (1), has a variable geometry. The regulation of the boost pressure (pld) is performed via an adjustment of the turbine geometry. A very rapid response of the boost pressure regulation to a variable load, with an overshoot of the specified value, which would damage the turbocharger, being avoided, is achieved by determining a manipulated variable (vtg) for the turbine geometry as a function of the exhaust gas back pressure (pag) prevailing in the exhaust gas channel (3) upstream from the turbine.

Abstract: A method and a device are described for controlling an internal combustion engine. Using at least one model, an oxygen quantity (MO22) flowing into the internal combustion engine is determined on the basis of at least one manipulated variable and at least one measured variable which characterizes the condition of the air in an intake manifold. The oxygen quantity (MO22) is determined on the basis of at least one temperature variable (T2), one pressure variable (P2), one speed variable (N), one fuel-quantity variable (ME) and one air variable (ML21).

Abstract: A method and a device for controlling an internal combustion engine. An actuator serves to influence the quantity of exhaust gas recirculated. A loop controller preselects the quantity of exhaust gas to be recirculated on the basis of a setpoint and an actual value which characterizes the quantity of exhaust gas recirculated. A first measured value is determined in a first position (open) of the actuator, and a second measured value is determined in a second position (closed) of the actuator, with the actual value or a correction value being preselectable on the basis of the difference between the two measured values.

Abstract: A method and a device for correcting for tolerances in a transmitter wheel are described. The transmitter wheel has a plurality of approximately equidistant marks that are scanned by a pickup. The pickup supplies a pulse train on the basis of which measured values are formed, with correction values being determined on the basis of a comparison of the individual measured values with a reference value. The measured values are filtered with at least one first and one second frequency-selective filtering.

Abstract: The invention relates to a system for controlling an internal combustion engine, in particular a self-igniting internal combustion engine. First means (200) specify a first signal (MLS, US) on the basis of at least one operating parameter (QK, N). Second means (235) specify a second signal (MLI) on the basis of at least the output signal from a lambda probe (125). A third means (220) calculates a third signal on the basis of the first signal and the second signal and applies it to a final controlling element (230). Furthermore, means (515, 520, 530, 610, 235) are provided for the temporal conditioning of the first and second signal.

Abstract: Engine speed is measured at successive moments and the gradient DN.sub.mot of the engine speed is determined based on successively measured engine speeds. Speeds of the driven wheels are measured and used to generate wheel speed signals, which in turn are used to control slippage of the driven wheels. The wheel speed signals are subject to a rise limitation dependent on the gradient DN.sub.mot of the engine speed. In a preferred embodiment the rise limitation is active when the vehicle is in first gear, the gradient DN.sub.mot is positive, VABS (n) is greater than or equal to VASR(n-1) , and VABS(n) is greater than or equal to VASR(n-1)+DN.sub.mot /K, where VABS(n) is a wheel speed signal generated by the ABS at moment n and VASR(n-1) is the wheel speed signal generated by the ASR in the previous moment.

Abstract: The tool changer comprises a plurality of gripper hands (29) adapted to be moved laterally to the flange (31) of a tool (13). The gripper hand is provided with a locking means (39) which is unlocked by a connecting link guide (49) when the gripper hand is at the tool holding fixture (12). Said locking means (39) supports locking elements (48) protecting the flange (31) at the gripper hand from being extracted. Due to a wrench (51), the shaft (30) of the tool (13) is released and locked inside the tool holding fixture (12). By a driving means, the holder carrying the gripper hands (29) is movable relative to a block displaceable transversly to the axis of the tool holding fixture (12) so that it may be moved in parallel to the axis of the tool holding fixture (12) while the wrench (51) is in engagement with the locking screw (35). Therefore, it is possible to perform a complete tool interchange without the need of disengaging wrench (51) and locking screw (35).