Drive System Design have collaborated with software specialists Altair and Fluidyna to develop and refine existing Smoothed Particle Hydrodynamic (SPH) techniques, achieving an accurate predictive tool for fluid losses in the transmission. In utilizing and developing the technique to predict fluid movement and drag levels, the efficiency of a transmission or axle can be improved to extend range by implementing a low cost, low drag passive lubrication system. This paper presents details of the lubrication system, its benefits over existing solutions, and details of the new modelling method and it’s correlation against test data for validation.
Weight reduction is always a key focus in driveline design. Drive System Design have been researching a step change in the design of casings for transmissions and drivetrain systems. This method explores the opportunities presented by advances in materials and manufacturing processed for significant reductions in component weight.
This paper discusses the potential conflict that can occur between vehicle and transmission teams regarding NVH issues when developing electric and hybrid technologies. Having completed dozens of successful projects in this area over the last ten years, Drive System Design have developed valuable experience in solving such conflict in real world applications.
When driven by conventional power sources, the input shafts of most transmissions rotate at speeds below 10,000 rpm. To improve efficiency the electric motor designer is increasing the speed of its rotation and currently speeds in the region of 20,000 rpm or more can be seen.