Daimler Chrysler Ag

Rainer M&auml;ckel

Alf Blessing

Thomas Schulz

Roland Mauser

Thomas Binder

Peter Hille

Gerhard Komander

Fritz Schmidt

Manfred Stege

An arrangement and method for protecting a multiple voltage supply system against voltage arc-over between the different voltage planes. For this, the voltage in the low-voltage plane of the supply system is clamped to the low-voltage value with a voltage limiter until a battery disconnect switch in the high-voltage plane of the supply system is opened and the generator output voltage in the high-voltage plane is adjusted back to the voltage value of the low-voltage plane. As a result, the high-voltage plane of the supply system is disconnected from the high-voltage sources. Consequently, the voltage in the low-voltage plane is prevented from increasing even in case of a short-circuit between both voltage planes of the supply system and the consumers in the low-voltage plane can continue to be operated safely.

Arrangement and method for protecting multiple voltage supply systems against voltage arc-over between different voltage planes and against pole reversal from the outside

A method for operating a safety device for motor vehicles which contains a multistage high-current battery isolating switch, disconnection of the battery from the vehicle's electrical system being blocked by vehicle operating signals, is characterized in that, to reactivate the vehicle, door contact switches are actuated and feed battery current to a switching logic which actuates the battery isolating switch by motor operation, in such a way that said switching logic moves the battery isolating switch into a standard position which connects the vehicle's electrical system to the battery.

Method and apparatus for operating a safety device for motor vehicles

A control device for the driving motor ( ) of a windshield system. A manually operated wiper switch ( ) is provided for selecting an operating mode, in at least one of which the wiper speed is automatically controlled by a characteristic curve and the signal from a rain sensor ( ). To modify the characteristic curve based on the use of the system by an individual driver, the manually operated wiper switch ( ) conveys control commands to an adaptation algorithm control in a control circuit ( ). The control circuit ( ), in response to switching out of the automatic mode, generates a new characteristic curve at a modified operating point, with the new characteristic curve incorporating the modified operating point. When the switching stage which is dependent on the quantity of rain is again activated, the diving motor ( ) is controlled according to the new characteristic curve.

Control device for a windscreen wiper system

The invention relates to a potential distribution system for the potential distribution to consumers and suited connectors. The potential distribution system contains a central supply line to which connectors can be joined to the consumer by means of a clamping device, preferably a cutting-clamping device, at freely selectable points. Each connector contains a self reset fuse for the consumer.

Potential distribution system for the potential distribution to consumers and suited connectors

A wiper rest heater is connected to a sensor. The sensor, when temperatures are low, directly or indirectly measures whether or not the windshield wiper can be moved when the wiper motor is switched on, without thereby damaging the wiper blade element or the motor. As a function of this, the wiper rest heater is then either switched on or off by an intelligent control.

Intelligent wiper rest heater

The invention relates to a circuit for protecting consumers from damage caused by polarity reversal in an electrical system, comprising a limiter and a tripping device, wherein the system voltage supply is limited when polarity is reversed and the voltage source connected with reversed polarity can be disconnected.

Growing community of inventors

Königswinter, Germany

Rainer Mäckel

Growing community of inventors

Königswinter, Germany

Rainer M&auml;ckel

Rainer Mäckel