Browse Publications Technical Papers 2003-01-0971
2003-01-03

Powertrain Efficiency Optimization of the Torotrak Infinitely Variable Transmission (IVT) 2003-01-0971

This paper reports the results arising from Torotrak's efficiency optimization program based upon the current Torotrak Series III Infinitely Variable Transmission (IVT) prototype (Fig.1), which was designed for the North American SUV (Sport Utility Vehicles) and luxury car market segment. System optimization is achieved in a number of ways including a variable hydraulic endload system, optimized variator design (in order to minimize variator power loss), minimized referred (or reflected) inertia and reduced power recirculation. The results are presented for the following attributes:
  • Contact/Variator Module/Transmission efficiency.
  • Powertrain specific fuel consumption (SFC).
  • Fuel economy. U.S. City, Highway and Metro Highway drive cycle improvements compared to the standard Ford Expedition 4AT.
  • Vehicle performance. Launch and acceleration performance compared to the standard Ford Expedition 4AT.

SAE MOBILUS

Subscribers can view annotate, and download all of SAE's content. Learn More »

Access SAE MOBILUS »

Preview Document Add to Cart
Members save up to 17% off list price.
Login to see discount.
Special Offer: Download multiple Technical Papers each year? TechSelect is a cost-effective subscription option to select and download 12-100 full-text Technical Papers per year. Find more information here.
We also recommend:
TECHNICAL PAPER

Modeling and Optimization of Vehicle Acceleration and Fuel Economy Performance with Uncertainty Based on Modelica

2009-01-0232

View Details

TECHNICAL PAPER

Pseudo-Empirical Efficiency Model of a Gearbox for Passenger Cars, to Optimise Vehicle Performance and Fuel Consumption Simulation

2004-01-1617

View Details

TECHNICAL PAPER

Dynamic Parameters Matching and Powertrain Optimization of an Extended Range City Bus

2016-01-1178

View Details

X