Volkswagen Ag

Marquardt Gmbh

Klaus Revermann

Karl Mueller

Andreas Titze

Andreas Thiele

Ralf Borngräber

Torsten Zawade

Thorsten Urlass

Dietmar Grave

Gerald Koch

Karl Müller

Gerd Stauss

Ralf Maier

Frank Ertzsaenger

Peter Konrad

Marco Baumgarth

An electric steering lock for a drive authorization system in a motor vehicle, including a movable locking element which, according to a first position, can be brought into locking engagement with a latched-in position on the steering shaft in the steering wheel column and, according to a second position, can be brought out of locking engagement with said position. The steering lock also has a drive for moving the locking element between the two positions, and electronics for controlling the drive. The system may have an associated second device in the form of an electronic key, an identification (ID) transmitter, a chip card or the like, with the result that, when the second device is authorized, the drive can be controlled into the respective position by the electronics. The electronics generate those signals which are used to trigger functions which can otherwise be effected by an electric ignition lock.

Electric steering lock, in particular for a motor vehicle

A method and a device are for overvoltage protection in dual-voltage vehicle electrical systems that have a different level of voltage. A switching element is positioned in at least one branch of the vehicle electrical system on the higher voltage level, and a voltmeter unit is located in the vehicle electrical system on the lower voltage level. The switching element is controlled by the voltmeter.

Method and device for overvoltage protection in dual-voltage vehicle electrical systems

A dual battery system includes a starter battery and a battery of the vehicle electric system, a starter and electric consumers that are divided up into start-relevant consumers and consumers of the vehicle electric system. At least one starter switch is interposed between the starter and the starter battery. A first, electronically fully locking switch element is interposed between the starter battery and the start-relevant consumers and a second electrically fully locking switch element is interposed between the battery of the vehicle electric system and the start-relevant consumers. An element is interposed between the starter battery and the battery of the vehicle electric system that prevents the flow of current from the starter battery to the battery of the vehicle electric system and the consumers of the vehicle electric system.

Dual battery system

Growing community of inventors

Wolfsburg, Germany

Klaus Revermann