Publication

Power and Mobility (P&M)
2014

SUPER EFFICIENT POWERSHIFT AND HIGH RATIO SPREAD AUTOMATIC TRANSMISSION FOR THE FUTURE MILITARY VEHICLES

by Iñigo Garcia-Eizaga Telleria

Abstract

The following paper describes the new SAPA automatic transmissions for the future military vehicles. The very high mobility requirements, the reclaim of weight, power & space and the actual relevance of the fuel consumption require a rethinking and a new vision of the automatic transmission concept and design. This is what SAPA has been working on for the last 12 years obtaining excellent technical and commercial results, a concept aimed at reducing the power losses of the conventional powershifting transmission eliminating the torque converter, reducing the spin losses -due to hydraulic pumps and friction discs-, and improving vehicle mobility on variable terrain situations as off-road.