Daimler Chrysler Ag

Robert Boschgmbh

Vb Autobatterie Gmbh

Christof Gross

Klaus Schmidt

Roland Bluemel

Franz-Josef Petry

Jochen Koenig

Markus Kneifel

Sigmar Braeuninger

Andreas Loewel

The invention relates to devices and/or methods for determining the availability of electrical energy in two-energy accumulator vehicle electric systems, in which both energy accumulators, particularly batteries, can be connected to one another via a D.C. converter. The required electric energy is generated by means of a generator that is driven by a vehicle engine. The customary consumers are connected to a first consumer battery circuit (). Additional consumer, for example, high-current consumers, particularly the starter, are connected to the second battery circuit (). A control device, for example, a controller that is equipped with a microprocessor determines the availability of the electric energy and occurring faults while evaluating.

Devices and/or methods for determining the availability of electric energy, in particularly in vehicle electric systems comprising several energy accumulators

An arrangement for supplying voltage to a number of loads for example, in a vehicle includes a vehicle power supply system () which has at least two energy stores. A first energy store is connected in a starter circuit element () to a starter () for starting an engine; and a second energy store is connected in a load circuit element to the load. The starter circuit element is connected to the load circuit element via a coupling element, and loads which are classified as being safety-relevant can be connected to the starter circuit element via an additional coupling element.

Arrangement for voltage supply to several users and controllers for a on-board network comprising at least two energy stores

An energy supply device for an electromagnetic valve control of an internal combustion engine, in particular of a motor vehicle. The supply device has a generator which can be mechanically coupled to the internal combustion engine. A rectifier circuit which is assigned to the generator, has a first diode arrangement, as an anode part, and a second diode arrangement, as a cathode part, and to which a supply output is connected, and an electrical energy store. The electrical energy store is connected to the output of the third diode arrangement, and the energy supply device has a controllable DC/DC converter, which is connected on the one hand to the third diode arrangement and on the other hand to the supply output. As an alternative to the third diode arrangement, the DC/DC converter may be coupled in parallel with a voltage regulator and a diode to the first diode arrangement.

Energy supply device for an electromagnetic valve control of an internal combustion engine

A method for improving the exhaust gas emissions of an internal combustion engine having an exhaust gas catalyst, wherein the exhaust gas catalyst is heated after starting the internal combustion engine. Regulation of the power output is performed by the generator or generators during the warm-up phase of the exhaust gas catalyst. The power output of the generator or generators is regulated such that this power output is reduced during a period of time until the exhaust gas catalyst has reached a specific minimum temperature.

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Weinstadt, Germany

Christof Gross