Continental Automotive Gmbh

Siemens Aktiengesellschaft

Vitesco Technologies Gmbh

Gabriel Marzahn

Martin Götzenberger

Franz Pfeilschifter

Christian Hauser

Uwe Jung

Walter Schrod

Janos Radeczky

Heinz Lixl

Manuel Brunner

Manfred Kramel

Klaus Kiel

Wolfgang Reisinger

A vehicle on-board electrical system having an AC voltage charging connection, a rechargeable traction battery, which is designed as a high-voltage rechargeable battery, and a power factor correction filter. The power factor correction filter connects the AC voltage charging connection directly to the rechargeable traction battery. The operating voltage range of the rechargeable traction battery is within the output voltage range of the power factor correction filter.

Vehicle on-board electrical system having a rechargeable traction battery directly connected to power factor correction filter

A method provides for detecting deviations of injection quantities for injections into internal combustion engines, as carried out for example by common-rail systems. At least one deviation of at least one injection quantity is detected by determining at least one deviation, from a predefined value in each case, of at least one value of at least one variable controlling an actuator of the injector and/or indicating at least one state of the actuator.

Method for detecting deviations of injection quantities and for correcting the injection quantity, and injection system

In a method for controlling the injection amount for an injector on an internal combustion engine, dependent on a given time period and the duration of the hold phase, the energy stored in the injector is calculated either with a correction value or with the voltage and charge values at the end of the hold phase.

Method of controlling an injection quantity of an injector of an internal combustion engine

A tendency of the controlled load to oscillate when controlling a capacitive load can be avoided according to a piezo actuator for an injection valve of an internal combustion engine, having charging and discharging processes for charging and discharging the capacitive load by means of a load current, each loading process being effected by chronological partial load current pulses according to chronological partial charging capacity pulses (p, p, . . . pn), wherein the envelope (E) of the partial charging capacity pulses (p, p, . . . pn), during the loading process, increases in a strictly monotonous manner in an initial phase, and the slope of the envelope decreases in a monotonous manner.

Method and device for controlling a capacitive load

A piezoelectric actuator, for instance a piezoelement for driving an injection valve of an internal combustion engine, is discharged from a charge state, in which a first control potential is present on a first piezo-terminal and a second control potential is present on a second piezo-terminal. The discharging operation is accelerated by not only changing the potential prevailing on the first piezo-terminal toward the second control potential by way of a first discharge path, but a second discharge path is also formed between the second piezo-terminal and a potential lying between the two control potentials. By appropriate selection of the time sequence in connecting these two discharge paths and of their electrical properties, discontinuities in the discharge process can be almost completely avoided. The discharge process then proceeds very rapidly and evenly.

Method and circuit configuration for operating a piezoelectric actuator

Growing community of inventors

Lappersdorf, Germany

Gabriel Marzahn