This paper discusses two practical issues in automotive powertrain control; optimization of gear shift patterns to balance driving performance and fuel economy, and smoother gear shifting to improve riding comfort. A real-time shift rescheduling method is proposed and evaluated to show its effectiveness for flexible tuning between performance and fuel economy. For smooth gear shifting, a collaborative control scheme between engine and automatic transmission (AT) gearbox is discussed to aim for a more fundamental torque control of the powertrain. To facilitate model-based approach, an AT gearbox model is devised using hybrid systems techniques to represent the discrete-event nature of automatic transmission.
Optimizing gear shifting by shift pattern rescheduling and collaborative control between engine and automatic transmission
Optimierung der Gangschaltung mit Hilfe der Schaltschema-Umplanung und kollaborativen Regelung zwischen Motor und Getriebe
2008
9 Seiten, 21 Bilder, 1 Tabelle, 7 Quellen
Aufsatz (Konferenz)
Englisch
Anwendung im Fahrzeugbau , Anwendung im Motorenbau , automatisches Getriebe , Getriebeschaltverhalten , Fahrverhalten , Schaltautomat , Kraftübertragungskomponente , Kraftübertragung , Kraftstoffverbrauch , Systemoptimierung , Regelungsoptimierung , Drehmomentenwandler , Drehmomentregelung , Regler , Steuereinrichtung
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