A vehicle powertrain control technique includes obtaining, by a controller, a set of parameters each indicative of a gear shift operation for an automatic transmission. Cased on the set of parameters, the controller detects whether a gear shift operation of the automatic transmission is imminent. In response to detecting that the gear shift operation of the automatic transmission is imminent, the controller (i) determines a desired reduction in powertrain output torque for performing the gear shift operation and (ii) controls the powertrain to temporarily reduce its torque output via a technique other than spark retardation. After reducing the powertrain output torque, the controller commands the automatic transmission to perform the gear shift operation. The temporary powertrain output torque reduction is achieved by controlling a variable valve control (VVC) system of an engine, such as commanding a lower valve lift profile, or decreasing power supplied to an electric motor.


    Zugriff

    Download


    Exportieren, teilen und zitieren



    Titel :

    GEAR SHIFT SCHEDULING USING VARIABLE VALVE LIFT/ACTUATION


    Beteiligte:
    SHRESTHA AMIT (Autor:in) / ESTEFANOUS FADI (Autor:in) / ZHONG LURUN (Autor:in)

    Erscheinungsdatum :

    2018-10-18


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Englisch


    Klassifikation :

    IPC:    B60W CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION , Gemeinsame Steuerung oder Regelung von Fahrzeug-Unteraggregaten verschiedenen Typs oder verschiedener Funktion



    GEAR SHIFT SCHEDULING USING VARIABLE VALVE LIFT/ACTUATION

    SHRESTHA AMIT / ESTEFANOUS FADI / ZHONG LURUN | Europäisches Patentamt | 2018

    Freier Zugriff

    GEAR SHIFT ACTUATION SIMPLIFICATION

    JACKSON GRAEME | Europäisches Patentamt | 2023

    Freier Zugriff

    GEAR SHIFT ACTUATION SIMPLIFICATION

    JACKSON GRAEME ANDREW | Europäisches Patentamt | 2023

    Freier Zugriff

    Variable valve actuation.

    Demmelbauer-Ebner,W. / Dachs,A. / Lenz,H.P. et al. | Kraftfahrwesen | 1991


    Variable Angle Rudder Lift Actuation Device

    OWEN III MILLER W | Europäisches Patentamt | 2023

    Freier Zugriff