Robert Boschgmbh

Robert Bosch Gmbh

Edgar Holl

Daniel Strack

Klaus Herz

Helge Frauenkron

Gunter Freitag

Joerg Staib

Jochen Friedmann

Robert Kuenne

Dirk Freundt

Wolfgang Henner

Bertram Rensch

Christian Boie

A method for selecting a procedure for determining the injection time of individual injection operations of a fuel injector, which may be supplied with pressurized fuel via a feed line, includes activating the fuel injector using various known activation durations in the vicinity of a predefined operating point of the fuel injector; detecting the pressure curve over time in the feed line for a number of injection operations; evaluating the detected pressure curves over time using at least two different procedures for determining the injection time from the particular pressure curve; determining the correlation between the determined injection times and the particular activation period; selecting the procedure with the highest correlation.

Method and device for testing a fuel injector

A method for operating an internal combustion engine having at least two exhaust-gas turbochargers, which allows the synchronous operation of the two exhaust-gas turbochargers to be reliably set (adjusted). For each of the at least two exhaust-gas turbochargers, an actuator for controlling the boost pressure produced by the compressors of the at least two exhaust-gas turbochargers is controlled by a separate control signal. At least one of the control signals is corrected in an open-loop-controlled manner for the purpose of synchronizing the at least two exhaust-gas turbochargers.

Method for operating an internal combustion engine having at least two exhaust-gas turbochargers

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Nuertingen, Germany

Edgar Holl