An engine control unit (400, Fig 5) for a full hybrid engine 100 with an internal combustion engine 110 and an electric motor 120 is configured to operate the internal combustion engine in a lean-burn mode, to determine a current load level of the full hybrid engine and to compare the current load level to a lean-burn load threshold (210, Fig 3). The lean-burn load threshold defines a load level below which stable operation of the internal combustion engine in the lean-burn mode is impossible and/or undesirable. If the current load level of the full hybrid engine is below the lean-burn load threshold, the internal combustion engine is decoupled from the drivetrain and the full hybrid engine is operated in an electric mode. The engine control unit preferably determines a current RPM of the full hybrid engine and to determine the lean-burn load threshold in dependence on the current RPM, or a current NOx concentration in an exhaust stream of the internal combustion engine, while the internal combustion engine is operating in the lean-burn mode. An internal combustion engine, a full hybrid engine, a powertrain for a vehicle, a vehicle and method of operation are also claimed.


    Access

    Download


    Export, share and cite



    Title :

    Lean operating hybrid gasoline engine


    Contributors:

    Publication date :

    2021-10-06


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    F02D CONTROLLING COMBUSTION ENGINES , Steuern oder Regeln von Brennkraftmaschinen / 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



    LEAN OPERATING HYBRID GASOLINE ENGINE

    JOHNSON JACK / MCWILLIAM LYN / GEDDES JOHN et al. | European Patent Office | 2023

    Free access

    LEAN OPERATING HYBRID GASOLINE ENGINE

    JOHNSON JACK / MCWILLIAM LYN / GEDDES JOHN et al. | European Patent Office | 2023

    Free access

    LEAN OPERATING HYBRID GASOLINE ENGINE

    JOHNSON JACK / MCWILLIAM LYN / GEDDES JOHN et al. | European Patent Office | 2021

    Free access

    LEAN OPERATION HYBRID GASOLINE ENGINE

    JACK JOHNSON / LYN MCWILLIAM / JOHN GEDDES et al. | European Patent Office | 2024

    Free access

    Ultra-Lean Pre-Chamber Gasoline Engine for Future Hybrid Powertrains

    Libert, Cedric / Müller, Christoph / Serrano, David et al. | SAE Technical Papers | 2019