Control system for the supercharging pressure of a turbocharged internal combustion engine

The variable geometry of the engine turbine is adjusted by an actuator 7 controlled by the system which includes: an open-loop control device 2 using at least one characteristic curve responding to engine speed and fuel injection quantity; a turn-off, closed loop regulating device 3 responding to th...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Hauptverfasser: PHILIPP BUKOVSEK, WERNER ASCHNER
Format: Patent
Sprache:eng
Schlagworte:
Online-Zugang:Volltext bestellen
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung:The variable geometry of the engine turbine is adjusted by an actuator 7 controlled by the system which includes: an open-loop control device 2 using at least one characteristic curve responding to engine speed and fuel injection quantity; a turn-off, closed loop regulating device 3 responding to the deviation #P 2 of the actual and desired supercharging pressure; a changeover device (4, Figure 2) for turning the regulating device on and off; and a precontrol device 5 for calculating a pre-control pulse duty factor for adding to the operating path 1 via adder 12. Device 5 responds to the over- or under-shooting of a gradient of the deviation #P 2 from a predefined window to provide better torque control under transitional conditions.