Robert Boschgmbh

Herbert Schumacher

Christoph Kern

Michael Kessler

Rainer Moritz

Bernhard Kamp

Enno Baars

Peter Skala

Bernd Dittus

Thomas Baumann

Michael Scheidt

Christos Hondros

Carsten Scholten

Harald Koehnlein

Marko Schuckert

Sebastian Wenzel

Thilo Schedler

A method and a device for setting an afterglow temperature in a self-igniting internal combustion engine, the afterglow temperature being reduced in a defined operating state of the internal combustion engine until a modification of an operating parameter as a result of the reduction of the afterglow temperature is required in order to maintain the defined operating state, in particular in order to maintain the injected fuel quantity.

Method and device for controlling an afterglow temperature in a diesel combustion engine

In order to very accurately ascertain the pollutant emission of the motor vehicle, which occurs during the operation of an internal combustion engine, without the use of complex measurement and test engineering, it is proposed, that during the operation of the internal combustion engine at least one cylinder pressure is in each case acquired at specifiable crankshaft angles, scanning values of a heating rate assigned to the acquired cylinder pressures are determined, the scanning values of the heating rate are provided to a specifiable model as input values, a crankshaft angle assigned to the initiation of combustion, an air/fuel ratio and an exhaust gas recirculation rate are ascertained and provided to the model as input values and the pollutant emission is determined as a function of the input values using the model.

Determination of a nox and soot emission occurring during the operation of an internal combustion engine

A method for determining the quality of the fuel for an internal combustion engine, in particular a direct-injection internal combustion engine in a vehicle, which is characterized by the following be performed: the internal combustion engine is operated in idle mode under predefinable operating conditions, the curve of the injection quantity, necessary for idling, over the engine temperature is determined, and the fuel quality is inferred from the curve of the injection quantity over the engine temperature.

Method for determining the quality of the fuel for an internal combustion engine

A procedure for operating a particle sensor that is arranged downstream after a particle filter, at which an ash contamination can occur, and a device for implementing the procedure, are suggested. A remaining operating time determination determines the remaining operating time of the particle sensor related to an ash contamination. Alternatively or additionally the remaining operating time determination provides a correction signal, with which the sensitivity loss of the particle sensor caused by the ash contamination can be considered.

Procedure for operating a particle sensor that is arranged downstream after a particle filter and device for implementing this procedure

A method for identifying the fuel quality and for operating an internal combustion engine, as well as an engine control unit, in which the temperature of at least one sheathed-element glow plug of the engine is controlled, an engine response after a temperature change is compared to an engine response before the temperature change, and from the result of this comparison, the fuel quality is derived.

Method for identifying a fuel quality and for operating an internal combustion engine and an engine control unit

A method for controlling at least one sheathed-element glow plug in an internal combustion engine, the temperature of the sheathed-element glow plug being controlled as a function of at least one operating parameter of the internal combustion engine in such a way that optimal combustion properties of the internal combustion engine prevail at all times.

Growing community of inventors

Gerlingen, Germany

Herbert Schumacher