6533b820fe1ef96bd127a909

RESEARCH PRODUCT

Split-Way CVTs: Parametric Analysis and Design

Dario Rotella

subject

Power-Split continuously variable transmissions CVT PS-CVT driveline gearbox planetary epicyclic gear gearing mechanical losses parametric design functional design hybrid electric vehicles HEV heavy-duty vehiclesSettore ING-IND/13 - Meccanica Applicata Alle Macchine

description

The thesis provides a parametric analytical method for the analysis and design of power-split continuously variable transmissions, which represent the state of the art for heavy-duty vehicles and hybrid electric cars. The functioning of any driveline is described by mean of a simple set of kinematic parameters, regardless of the constructive scheme. The calculation of the control torques remains straightforward even when both inertial effects and mechanical losses are taken into account. A simple design procedure is described and generalized in order to address any order of driveline, including multimode transmissions. The final layout is generated additively, without the need to analyze hundreds of potentially meaningless, redundant or suboptimal solutions.

http://hdl.handle.net/10447/338457