The goal of this research project is to determine a passenger vehicles' acceleration and top speed change in response to the change in the ratio of the final drive gearing coefficient. To accomplish this, the following tasks had to be completed: analysis of the transmission types, their construction and the operation of the final drive assembly, performing a numerical analysis and comparing it to dynamic real world test results using a “BMW (E36) 318is” as the test subject. The car chosen for this research is a “BMW (E36) 318is” due to its classical arrangement comprised of a front mounted four cylinder petrol engine and rear wheel drive. The analysis of the final drive gearing in such arrangement is easier, due to the transmission being separate from the rear mounted differential assembly. By changing the differential housings which have different internal gearing, their effect on the vehicle's acceleration and top speed could be observed and compared to the calculations of expected values. The research was started by gathering and analyzing material about the power delivery chain in the manual transmission vehicle model to develop a familiarity with the components: flywheel, clutch, transmission and integrated subframe final drive assembly. In regards to the available final drive assemblies, four differential housings were chosen with the following internal gearing configurations to conduct this study: 2.79:1 – the lowest one, available from the factory in the diesel powered vehicles known for their high torque. 3.15:1 – the gear set mostly found in the high powered petrol engine cars. 3.45:1 – the gear set that came standard with the chosen test vehicle. 4.10:1 – the gear set used for the least powerful petrol engines, usually coupled with automatic transmissions. Changing the differential therefore changes the gearing of the final drive assembly and provides a change in vehicle dynamics. After conducting the gathering and analysis of the available information from the data-sheets and literal documentation, ...


    Zugriff

    Download


    Exportieren, teilen und zitieren



    Titel :

    Pagrindinės perdavimo poros įtakos lengvojo automobilio dinamikai tyrimas ; Investigation of the main transmission pairs affect of the vehicle's dynamic



    Erscheinungsdatum :

    2016-06-09


    Medientyp :

    Hochschulschrift


    Format :

    Elektronische Ressource


    Sprache :

    Lithuanian , Englisch



    Klassifikation :

    DDC:    629