Internal combustion engine with two exhaust gas turbochargers and compressor bypass, has engine output torque held essentially constant when opening bypass by internal engine intervention
The engine has at least one high pressure (2) and at least one low pressure (3) stage and a bypass (4) for the high pressure compressor (5) of at least one high pressure stage. A control unit (9) controls the opening and closing of the bypass depending on different engine speed-load characteristic o...
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Sprache: | eng ; ger |
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Zusammenfassung: | The engine has at least one high pressure (2) and at least one low pressure (3) stage and a bypass (4) for the high pressure compressor (5) of at least one high pressure stage. A control unit (9) controls the opening and closing of the bypass depending on different engine speed-load characteristic opening and closing thresholds. The engine output torque is held essentially constant when opening the bypass by internal engine intervention. AN Independent claim is also included for the following: a method of operating an internal combustion engine for a motor vehicle.
Die Erfindung betrifft eine Brennkraftmaschine mit zwei Abgasturboladern und einer Verdichterumgehung (4) für den Hochdruckverdichter, wobei mittels einer Steuereinheit das Öffnen und Schließen der Verdichterumgehung (4) abhängig von einer Öffnungsschwelle und einer Schließschwelle gesteuert wird, wobei sich die Öffnungsschwelle und die Schließschwelle im Motordrehzahl-Motormoment-Kennfeld unterscheiden. |
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