Highlights ► Multi-axle wheeled vehicles aimed at agricultural duties have very complex transmission configurations. ► Requirements in terms of torque and speed in wheels quite variable. ► No modelling methodology on hydrostatic transmission drivelines from the efficiency point of view. ► Mathematical models and procedure has been proposed, a case study has been discussed. ► Efficiency variability on individual components, compared to maximum catalogue values given by manufacturers.
Abstract There is a vast range of off-road multi-axle wheeled vehicle configurations. Some of the most common are the three axle rigid vehicles or the four axle articulated vehicles. However, these types of vehicles have the problem of using very complex transmission configurations. In addition, the requirements in terms of torque in each of the wheels are quite variable and non uniform. This work aims to model and study, from the standpoint of performance and energy efficiency, the driveline of such vehicles. The modelling process for the design and analysis of a hydrostatic transmission aimed at off-road multiple axle vehicles has been conceptually described. Mathematical models for the main components of the transmission and a global model of the driveline have been defined. A specific example study is presented, applying the described procedure. Results show that the overall performance of the transmission is highly dependent on the operating conditions, on the selected configuration and on the used components. The results also show that the actual instantaneous efficiency of each of the components is usually far below their maximum catalogue value. In the case study efficiencies up to 64% have been reached for the overall transmission.
Analysis of a hydrostatic transmission driveline for its use in off-road multiple axle vehicles
Journal of Terramechanics ; 49 , 5 ; 245-254
2012-07-28
10 pages
Article (Journal)
Electronic Resource
English
Hydrostatic , Transmission , Vehicle , Driveline , Modelling , Efficiency , Performance , Multi-axle , Off-road , Conceptual design
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