Robert Boschgmbh

Daimler Chrysler Ag

Daimler Ag

Bernd Huber

Christof Ott

Jens Dorfschmid

Martin Krohn

Juergen Semler

Erich Schneider

Norbert Keim

Helmut Fleischer

Walter Fleischer

Bernd Schoenhardt

Wulf-Siegfried Bayha

Wolfgang Rudolf

Juergen Pilsl

Wolfgang Rudolph

A device for the operation of an electrical load is arranged in and/or on a movable transparent panel element. A supply and/or signal line is arranged between at least one energy source and the electrical load. The supply and/or signal line is arranged on a lever assembly, and can be guided by the lever assembly.

Device for the operation of an electrical load arranged in and/or on a movable transparent planar element

A method for controlling an electromagnetic valve, in particular for an automatic transmission of a motor vehicle. With known methods, electromagnetic valves are triggered with a pulse-width-modulated signal having a constant clock frequency. The object is to provide a method by which a rapid response characteristic and a high adjustment precision of the electromagnetic valve are made possible. The specific properties of a hydraulic system in which electromagnetic valves are used, in particular the rigidity and damping, are not constant but instead change considerably under different operating states of the hydraulic system and/or with different performance quantities of the electromagnetic valve. These different properties are taken into account through the change in the clock frequency as a function of performance quantities of the electromagnetic valve. The clock frequency may thus be optimally adapted to the properties of the hydraulic system, and a rapid response characteristic and a high adjustment precision are achieved.

Method for controlling an electromagnetic valve, in particular for an automatic transmission of a motor vehicle

The invention proposes a solenoid valve (), in particular for automatic transmissions of motor vehicles. Solenoid valves () have the problem of vibrations that detract from shifting comfort. Integrating a throttle restriction () into the solenoid valve () on the part of the solenoid valve () oriented toward the consumer as proposed by the invention makes it possible to efficiently reduce such vibrations. In addition, the production costs are low, in particular because the throttle restriction () is provided In a filter cage () of the solenoid valve ().

Electromagnet valve, in particular for automatic gearboxes

A method for recognizing oil top-up quantities is provided. The method records a multiplicity of oil levels under specific operating conditions over time; calculates an oil-mass average value X.sub.z of the oil top-up quantity over z instantaneous measurements xmom in each case; calculates a compensating function describing the variation in an oil mass xh over time using a specific number of hourly oil masses xh; calculates a difference DFA from an end point xlang of the compensating function and from the penultimate oil-mass average value according to a function activates a discrimination function for checking whether the difference DFA is greater than a first oil-mass limit value M1; and if so, a special case is recognized and a processing function for calculating the oil top-up quantity in the special case is started; and if not, a further discrimination function is started, for checking whether the difference DFA is greater than a second oil-mass limit value M2 and there is a specific communication signal between the vehicle and driver. If the result of the check is that the difference DFA is greater than the second oil-mass limit value M2, a special case is recognized and the processing function for calculating the oil top-up quantity in the special case is started. If the interrogation result is negative, a processing function for calculating the oil top-up quantity in the normal case is activated.

Method for the recognition of oil top-up quantities

To increase the responsiveness of a vehicle alarm system to, for example, unauthorized entry through windows, jacking up for removal of parts or vehicle theft as well violent impact by another vehicle, at least one position sensitive sensor has its output signal, which represents the instantaneous position of the vehicle stored after activation of the alarm system. Any change in that position is detected and triggers a warning device when the deviation exceeds a predeterminable amount. The position sensitive sensor may be a fluid-filled vessel the internal resistance of which is measured in a resistance bridge or it may be a variable inductance sensor which is connected to a frequency generator whose output signals are counted and compared with a given value. The system according to the invention may also serve as an accelerometer.

Position-sensitive alarm system

Growing community of inventors

Schorndorf, Germany

Bernd Huber