Mtu Friedrichshafen Gmbh

Thomas Spaegele

Armin Doelker

Klaus Wehler

A diagnostic function for an internal-combustion engine whose power is set by way of a power-determining signal that is determined from a first signal from a determination device, and a second signal determined by a torque controller, based on engine torque. A selection device sets either the determination device or the torque controller to be dominant for the power determining signal. When the values of the engine torque are not plausible, an error mode is set. With the setting of the error mode, the dominance is retained when the determination device is dominant. When the torque controller is dominant, a change of the dominance takes place.

Diagnostic function for an internal combustion engine

The invention relates to a system for regulating an internal cumbustion engine (). Said system regulates the maximum combustion pressure by modifying the start of the injection process. The aim of the invention is to improve the operational reliability of the internal combustion engine (). To this end, the invention provides that the maximum combustion pressure (pMAX(i)) is diagnosed by the detection of a freak value. This then determines a first or second mode and sets a diagnosis value depending on the modi. The invention also provides that the output of the injection start regulator is limited by a limiting mechanism.

System for regulating an internal combustion engine

A control system for protecting an internal combustion engine from overloading. The output of the internal combustion engine is adjusted with an output-determining signal according to an input signal which characterizes the desired output. According to the invention, a differential torque is calculated from the current motor torque and a maximum permissible motor torque. The differential torque in turn determines an authoritative second signal. A first signal that is determined from an input signal characterizing the desired output and the second signal are directed to a selector which selects the first or second signal as the signal that determines the output.

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Tettnang, Germany

Thomas Spaegele