Robert Boschgmbh

Rainer Hild

Ernst Wild

Sabine Wegener

Michael Drung

A method and a device for operating at least one supercharger of an internal combustion engine is described, the actuating signal for at least one actuating element of the supercharger (waste gate actuator, electrical auxiliary compressor) being generated as a function of the exhaust gas volume flow in the exhaust tract of the internal combustion engine.

Method and device for operating at least one turbocharger on an internal combustion engine

A method and a device for operating an internal combustion engine having exhaust-gas recirculation are provided, which make it possible to dispense with an ambient-pressure sensor. In this context, an intake-manifold pressure and an ambient pressure are modeled. The intake-manifold pressure is modeled as a function of the modeled ambient pressure. The intake-manifold pressure is also measured. The modeled intake-manifold pressure is compared to the measured intake-manifold pressure. The modeled ambient pressure is adapted as a function of the comparison result. The modeled ambient pressure is adapted only when the exhaust-gas recirculation is inactive.

Method and device for operating an internal combustion engine having exhaust-gas recirculation

The invention is directed to a method and an arrangement for controlling an internal combustion engine () having a compressor () for compressing the air drawn in by suction by the engine (). The compressor is especially an exhaust-gas turbocharger. With the method and arrangement, a requirement-proper and timely opening of a valve () of an air path () is ensured for avoiding compressor pumping. The air path () bypasses the compressor (). The valve () of the air path (), which bypasses the compressor (), is controlled in dependence upon at least one pregiven characteristic line () of a compressor characteristic field.

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Moeglingen, Germany

Rainer Hild