Date of download: 11/6/2017 Copyright © ASME. All rights reserved. From: Effect of the Ratio Spread of CVU in Automotive Kinetic Energy Recovery Systems J. Mech. Des. 2013;135(6):061001-061001-9. doi:10.1115/1.4024121 Figure Legend: Schematic of the driveline of the mechanical hybrid vehicle. Sections of the driveline are tagged with numbers. FR is the Fixed Ratio final drive of the vehicle driveline, FM is the Final Multiplier. The variator can be of two types: single-unit mechanical CVT (toroidal traction drive for instance) or PS-CVT architecture, where PG is the planetary gear. The KERS is plugged in the vehicle propshaft through a friction clutch. A second clutch (not shown in the figure) can disconnect the FM from the variable drive when the flywheel is in idle rotation.