Investigation target is the non-stationary dynamic behaviour of the belt drive used in a belt driven electric motor-alternator of a mild-hybrid engine. The investigated engine is General Motors (GM) 1.3 litre Turbo Charged Diesel. The typical investigation for hybrids uses a drive cycle system simulation which aims to reduce emission and fuel consumption and to improve drivability. However these investigations are general and do not consider the detailed dynamics of the belt interaction with the crank train and electric motor-alternator. The detailed investigations for such belt driven mild-hybrid systems are required, as the belts have to transfer high torque and face high dynamic loads due to their main target operating conditions like start-stop or transition between motor and alternator. Standard stationary operating conditions or simple run-up ramps used for normal engine simulation are no longer sufficient. The investigation is performed in the concept phase of the hybrid vehicle development. One of the important points in concept phase is the decision about target torque ramp, which is a compromise between required start-up time as a comfort issue and dynamics in the belt and tensioners as well as durability of crank train front end components. The transient dynamic behaviour of the belt drive is simulated using the multi body simulation tool AVL EXCITE Timing Drive. The model consists of a detailed discrete model of the accessory belt drive system. The model includes the tensioners and the torsional model of the crank train. The loads like cylinder pressure and the torques at the pulleys are applied as constant, speed and/or time dependent. Detailed investigations are made for the simulation of the complex non-stationary dynamics of the combustion engine start as well as the braking, boosting or transition from boosting to braking. Further focus is on crankshaft front end assembly in view of durability and slippage within bolt contacts, due to the additional dynamic loads from the belt system considering that the target is to use the same components as in the non-hybrid version. The paper presents the problem definition, modelling technique, the obtained results and the main conclusions of the investigation.


    Zugriff

    Zugriff über TIB

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Belt-driven mild-hybrid system: Numerical simulation


    Beteiligte:
    Bukovnik, Sasa (Autor:in) / Resch, Thomas (Autor:in) / Paladini, Vanessa (Autor:in)


    Erscheinungsdatum :

    2009


    Format / Umfang :

    13 Seiten, 9 Bilder, 3 Quellen



    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




    Belt driven mild hybrid system - numerical simulation

    Bukovnik,S. / Resch,T. / Paladini,V. et al. | Kraftfahrwesen | 2009


    Belt driven starter alternator reversible system, from stop-start to mild hybrid

    Dubus, Jean-Marc / Plasse, Cedric | Tema Archiv | 2004


    DUAL BELT METHOD FOR MILD HYBRID APPARATUS

    KIM HYUNG KYOON | Europäisches Patentamt | 2017

    Freier Zugriff

    Equivalent Consumption Minimization Strategy for Mild Hybrid Electric Vehicles with a Belt Driven Motor

    Jun, Youngho / Jeon, Byung Chun / Youn, WoongRo | British Library Conference Proceedings | 2017


    Equivalent Consumption Minimization Strategy for Mild Hybrid Electric Vehicles with a Belt Driven Motor

    Jeon, Byung Chun / Youn, WoongRo / Jun, Youngho | SAE Technical Papers | 2017