Efficiency sensitivity analysis of a hydrostatic transmission for an off-road multiple axle vehicle
Pijuan Cases, Jordi
MetadataShow full item record
There is a large variety of multiple driven axle vehicles. Some of the most common are the 3-axle rigid vehicles and the 4-axle articulated vehicles, which can in some cases have different steering mechanisms, adaptive suspension, etc. This last kind of vehicles usually have very complex transmission configurations. Moreover, the required torques in each of the wheels can be very different, especially when the vehicle is working in rough terrains. The aim of this work is to study and model the driveline of this kind of vehicles, when using a hydrostatic transmission, from the performance and efficiency point of view, by analysing the influence of the operating conditions in the transmission efficiency. A global model is used to quantify the power flow in each of the transmission elements and the overall performance of the entire vehicle driveline, given the operating conditions thereof. A sensitivity analysis has also been done showing the influence of vehicle speed, rolling resistance, terrain slope and hydraulic motors displacement in the overall transmission efficiency. The interest of this work is also to make a contribution to the literature in the field of global modelling of drivelines under variable operating conditions and its application to ATVs. One important aspect is the influence of different actuation requirements that occur in different wheels at the same time. The results show that the overall performance of the transmission is highly dependent on operating conditions, on the selected transmission configuration and on the used components.
Is part ofInternational Journal of Automotive Technology, 2013, vol. 14, núm. 1, p. 151-161
European research projects
Showing items related by title, author, creator and subject.
Active bogies, chassis levelling and transmission efficiency for a vehicle operating in rough terrain Comellas Andrés, Martí; Pijuan Cases, Jordi; Roca Enrich, Joan; Potau, Xavi (International Conference of Agricultural Engineering, 2012)There is a growing interest in developing systems that allow the mobility of vehicles in rugged terrain, as in forestry areas, where conventional wheeled vehicles have limitations. Four axle vehicles with bogies can adapt ...
Pijuan Cases, Jordi; Comellas Andrés, Martí; Nogués Aymamí, Miquel; Roca Enrich, Joan; Potau, Xavi (Elsevier, 2012)Four axle vehicles with bogies can adapt the position of the wheels to follow irregularities in the terrain, having an obstacle surpassing ability far greater than conventional 2-axle vehicles. Still, the ability to ...
Transmission system for an off-road multiple axle wheeled vehicle. Performance and energetic efficiency modelization Comellas Andrés, Martí (Universitat de Lleida, 2013-12-02)