[ASME ASME 2010 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference - Montreal, Quebec, Canada (August 15–18, 2010)] Volume 4: 12th International Conference on Advanced Vehicle and Tire Technologies; 4th International Conference on Micro- and Nanosystems - The Case for Urban Vehicles: Powertrain Optimization of a Power-Split Hybrid for Fuel Economy on Multiple Drive Cycles