Robert Boschgmbh

Makatec Gmbh

Michael Hackner

Hans Hasse

Alfons Doerr

Nello Medoro

Norbert Stroh

Gerhard Haaga

Juergen Sojka

Frederik Blank

Antonio Diaferia

Walter Lehle

Christos Hondros

Johannes Zeidler

Bernd Frey

Andreas Walter

Heiko Lenhardt

Bjoern Noack

Daniel Zander

Charlotte Summerer

John Kuesters

Ciro Medolla

Antonio De Benedictis

Hans Georg Bossemeyer

Eckehart Walitza

Thomas Weimer

Stefan Hoerenberg

Markus Waibler

Christian Schlasza

Nello Sepe

Ghislain Mouil Sil

Christian Viehmann

Sani Dzeko

Markus Engst

The invention relates to a method for operating a fuel injection system () for supplying a combustion engine of a vehicle with fuel, in which method the fuel is conveyed at high pressure with the aid of a high-pressure pump (), fed to a high-pressure accumulator (), and injected into a cylinder of the combustion engine with the aid of at least one injector connected to the high-pressure accumulator (). In order to detect any damage to the drive of the high-pressure pump (), according to the invention The invention further relates to an electronic control unit for carrying out the method.

Method for operating a fuel injection system for supplying a combustion engine with fuel, and electronic control unit

A method for specifying a malfunction of an exhaust gas recirculation system of an internal combustion engine of a motor vehicle, including: setting a first operating point of the engine and a first operating state of the fresh air/exhaust gas system as vehicle conditioning in a first measurement setting; measuring volumetric efficiencies of the engine for the first measurement setting and for at least one additional measurement setting, and comparing the measured volumetric efficiencies with an engine characteristics map stored in a memory unit for volumetric efficiency values of the engine, and ascertaining whether a malfunction is present during the exhaust gas recirculation process based on the comparison; and specifying the malfunction of the exhaust gas recirculation system while taking into account the measuring results for the first measurement setting and for the at least one additional measurement setting and the stored engine characteristics map for volumetric efficiency values.

Method for specifying a malfunction of an exhaust gas recirculation system of an internal combustion engine of a motor vehicle and corresponding diagnostic device

In a common rail system having two electrically controlled actuating elements, e.g., a metering unit at the input side of a high-pressure pump and a pressure regulating valve on the common rail, different fuel delivery quantities are able to be set in the common rail system while the vehicle is stationary, independent of the current engine load, by controlling operating points via one of the actuating elements and subsequently regulating the other actuating element. Control currents of the actuating elements correspond to the operating points. These control currents, or differences of control currents, are compared to target values to enable an evaluation of the common rail system.

Method for testing the fuel quantity balance in a common rail system, corresponding engine control system, and corresponding diagnostic device

By detecting the pressure time characteristic on the high-pressure side of an injection pump, the delivery volume of the pump is able to be determined without intervention in the injection system.

Method and device for determining the delivery volume of an injection pump

A method and device for monitoring a fuel metering system, in which fuel is pumped from a low-pressure zone into a high-pressure zone. The pressure in the high-pressure zone is detected. An error is recognized on the basis of the pressure variation in the high-pressure zone. The type of error is recognized on the basis of the shape of a pressure drop curve. The variation of the pressure quantity over time is approximated using a function such as the hyperbolic function. The type of error is recognized on the basis of the quantity characterizing the function.

Device and method for monitoring a fuel metering system

A thermodynamic machine for the absorption and emission of heat at different temperatures has at least one thermodynamic device with at least one membrane separating a gas phase and a liquid phase provided for transport of heat, wherein the at least one membrane is permeable for at least one component contained in the gas and liquid phases. The at least one membrane is a porous membrane or a solution diffusion membrane or a modification of the porous membrane or a modification of the solution diffusion membrane.

Thermodynamic machine and method for absorbing heat

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Marbach, Germany

Michael Hackner