A new engine drivetrain control system is described which can provide a higher gear ratio and leaner burning mixture and thus reduce the fuel consumption of spark ignition engines. Simulations were performed to obtain reduced torque fluctuation during changes in the air - fuel ratio and gear ratio, without increasing nitrogen oxide emissions, and with minimum throttle valve control.The results show that the new system does not require the frequent actuation of throttle valves because it uses direct fuel injection, which increases the air - fuel ratio of the lean burning limit. It also achieves a faster response in controlling the air mass in the cylinders. This results in the minimum excursion in the air - fuel ratio which in turn, reduces nitrogen oxide emissions.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    A New Engine Control System Using Direct Fuel Injection and Variable Valve Timing


    Weitere Titelangaben:

    Sae Technical Papers


    Beteiligte:

    Kongress:

    International Congress & Exposition ; 1995



    Erscheinungsdatum :

    01.02.1995




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




    A New Engine Control System Using Direct Fuel Injection and Variable Valve Timing

    Ohyama, Y. / Fujieda, M. / SAE | British Library Conference Proceedings | 1995


    A new engine control system using direct fuel injection and variable valve timing

    Ohyama,Y. / Fujieda,M. / Hitachi,JP | Kraftfahrwesen | 1995


    Effect of Variable Engine Valve Timing on Fuel Economy

    Ma, T. H. | SAE Technical Papers | 1988


    Effect of variable engine valve timing on fuel economy

    Ma,T.H. / Ford Motor,GB | Kraftfahrwesen | 1988


    Parameterization and Simulation for a Turbocharged Spark Ignition Direct Injection Engine with Variable Valve Timing

    Stefanopoulou, Anna / Yilmaz, Hakan / Vanier, Julien et al. | SAE Technical Papers | 2009