Method for operating an internal combustion engine with a turbocharger arrangement and control unit for an engine with a turbocharger arrangement

Method for operating an internal combustion engine with a turbocharger arrangement and control unit for an engine with a turbocharger arrangement

Methods are provided for controlling an engine. One method may include adjusting airflow to a turbocharger arrangement with a turbine bypass valve bypassing a first turbine from a high-pressure turbocharger and a wastegate bypassing a second turbine from a low-pressure turbocharger; responsive to va...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: CHEVALIER ALAIN MARIE ROGER, MARBAIX MICHAEL, BARTSCH ARNO, PETROVIC SIMON, ROETTGER DANIEL
Format: Patent
Sprache:eng
Schlagworte:
BLASTING
COMBUSTION ENGINES
COMBUSTION ENGINES IN GENERAL
CONTROLLING COMBUSTION ENGINES
HEATING
HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
INTERNAL-COMBUSTION PISTON ENGINES
LIGHTING
MECHANICAL ENGINEERING
WEAPONS
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Beschreibung
Zusammenfassung:Methods are provided for controlling an engine. One method may include adjusting airflow to a turbocharger arrangement with a turbine bypass valve bypassing a first turbine from a high-pressure turbocharger and a wastegate bypassing a second turbine from a low-pressure turbocharger; responsive to valve degradation, setting the turbine bypass valve fully open and the wastegate fully closed; and limiting engine torque based on a flow through a compressor of the low pressure turbocharger. In the event of valve degradation, limiting torque may reduce overspeed and surge of the low pressure turbocharger.