Systems and methods are provided for diagnosing cylinders. In one example, a system includes an engine having a plurality of cylinders coupled to a crankshaft, a crankshaft speed sensor, and a controller. The controller is configured to receive a first output from the crankshaft speed sensor during nominal engine operation, receive a second output from the crankshaft speed sensor during engine operation where a fueling disturbance is introduced to a cylinder of the plurality of cylinders, indicate that the cylinder is unhealthy responsive to a difference between the first output and the second output being less than a threshold difference, and adjust one or more operating parameters of the engine in response to the indication.


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    Titel :

    Methods and systems for cylinder diagnosis



    Erscheinungsdatum :

    2023-02-07


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Englisch


    Klassifikation :

    IPC:    F02D CONTROLLING COMBUSTION ENGINES , Steuern oder Regeln von Brennkraftmaschinen / B61C Lokomotiven , LOCOMOTIVES



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    Freier Zugriff

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    Individual Cylinder Fuel Control for Imbalance Diagnosis

    Schulte, Charles / Cabush, David / Smith, James C. | SAE Technical Papers | 2010


    Individual cylinder fuel control for imbalance diagnosis

    Smith,J.C. / Schulte,C.W. / Cabush,D.D. et al. | Kraftfahrwesen | 2010