Robert Boschgmbh

Ralph Bauer

Bernd Schelling

Thomas Holst

Georg Hoegele

Patrick Bauer

Mehmet Oencel

Carsten Hermann

Yannick Chauvet

Klaus Dressler

Martin Czasch

Johannes Kunst

Martin Kaiser

A circuit arrangement for activating a control device includes: a first switch in a main current path, via which the control device is activated; an alternative current path; and a control logic which compares a voltage present for activating the control device to a threshold voltage and opens the first switch if the threshold voltage falls below so that a higher volume of an interference current effectuated by the present negative voltage flows via the alternative current path.

Method for activating a control device

A method is proposed for actuating an electromagnetic load () which can be switched between at least two switching states, particularly a magnetic valve, wherein switching between a first and a second of the switching states takes place as a result of a current flowing through the load () by means of applying an electrical voltage to said load (). Provision is thereby made for the voltage to be clocked upon application thereof to said load () if due to the applied voltage the switching process would occur without clocking outside of a current ramp-up. The invention furthermore relates to an electrical circuit for actuating an electromagnetic load ().

Method for actuating an electromagnetic load and a corresponding circuit

The invention relates to an electric circuit configuration for switching an electrical load (), particularly a solenoid valve, by means of at least one switching means () associated with the consumer (), particularly a transistor. The circuit configuration comprises at least one analysis circuit comprising at least one measuring resistor () connected in series with the switching means (), at least one first analysis means () for determining a parameter corresponding to the short-circuit current, and at least one second analysis means () for determining a parameter corresponding to the consumer current. The circuit configuration is characterized in that the first analysis means () is connected in parallel with the measurement resistor ().

Electric circuit configuration for switching an electrical load

The invention relates to an arrangement () for operating an exhaust gas post-treatment device, particularly of a motor vehicle, wherein the arrangement () comprises a plurality of consumers (-) and a controller (), wherein the controller () comprises at least one switching device () for switching the consumers (-) on and off. According to the invention, the consumers (-) are grouped according to function, and connected to one switch (-) each of the switching device (). The invention further relates to a method for operating an exhaust post-treatment device.

Arrangement and method for operating an exhaust gas post-treatment device

The invention relates to a circuit arrangement () for a control device, and a method for operating said circuit arrangement (). The circuit arrangement () comprises a first field-effect transistor () actuating the control device, and a comparator, which compares the voltage provided for actuating the control device with a threshold voltage, and which actuates a timed operation of the first field-effect transistor () via a control unit () if the threshold voltage is exceeded.

Circuit arrangement for a control device

A method for identifying a short circuit to the positive terminal of a battery in a circuit of a motor vehicle. An electronic circuit breaker HS () is actuated by a control device () and has at least one electrical switch which switches on and off loads (), the switching state of said switches being reported to the control device () and determines that operation is fault-free when the connected loads () are supplied with voltage when the electronic circuit breaker HS () is switched on and a 'short circuit' or 'load drop' message is produced at the circuit breaker when the electronic circuit breaker HS () is switched off, switching off the supply voltage by the electronic circuit breaker HS () is detected at the end of a driving cycle of the motor vehicle. A fault is determined when a &#x201c;short circuit&#x201d; or &#x201c;load drop&#x201d; message is not produced at the electrical switch.

Method for identifying a short circuit to the positive terminal of a battery and circuit device for carrying out the method

The invention relates to an arrangement () for operating an exhaust gas aftertreatment device, in particular of a motor vehicle, having a plurality of active sensors (-) and a control device () that comprises at least one voltage supply unit () to which the sensors (-) are operatively connected. According to the invention, the voltage supply unit () comprises at least two supply benches (-) that can be switched independently from each other. The sensors (-) are grouped according to the function thereof and are then associated with one of the supply benches (-).

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Esslingen, Germany

Ralph Bauer