Energy Consumption of a Battery Electric Vehicle with Infinitely Variable Transmission

Battery electric vehicles (BEVs) represent a possible sustainable solution for personal urban transportation. Presently, the most limiting characteristic of BEVs is their short range, mainly because of battery technology limitations. A proper design and control of the drivetrain, aimed at reducing the power losses and thus increasing BEV range, can contribute to make the electrification of urban transportation a convenient choice. This paper presents a simulation-based comparison of the energy efficiency performance of six drivetrain architectures for BEVs. Although many different drivetrain and transmission architectures have been proposed for BEVs, no literature was found regarding BEVs equipped with infinitely variable transmissions (IVTs). The analyzed drivetrain configurations are: single- (1G) and two-speed (2G) gear drives, half toroidal (HT) and full toroidal (FT) continuously variable transmissions (CVTs), and infinitely variable transmissions (IVTs) with two different types of internal power flow (IVT-I and IVT-II). An off-line procedure for determining the most efficient control action for each drivetrain configuration is proposed, which allows selecting the optimal speed ratio for each operating condition. The energy consumption of the BEVs is simulated along the UDC (Urban Driving Cycle) and Japanese 10-15 driving cycle, with a backward facing approach. In order to achieve the lowest energy consumption, a trade-off between high transmission efficiency and flexibility in terms of allowed speed ratios is required.

[1]  Giacomo Mantriota,et al.  Influence of Clearance Between Plates in Metal Pushing V-Belt Dynamics , 2002 .

[2]  Giacomo Mantriota,et al.  Infinitely Variable Transmissions in neutral gear: Torque ratio and power re-circulation , 2014 .

[3]  Hisashi Machida,et al.  Development of the Next-Generation Half-Toroidal CVT with Geared Neutral and Power-Split Systems for 450 N-m Engines , 2004 .

[4]  Stefano De Pinto,et al.  A simple model for compound split transmissions , 2014 .

[5]  Giacomo Mantriota.  Performances of a series infinitely variable transmission with type I power flow , 2002 .

[6]  Hong Yang,et al.  Development of Two-Mode Hybrid Powertrain with Enhanced EV Capability , 2011 .

[7]  Giacomo Mantriota,et al.  MG-IVT: An Infinitely Variable Transmission With Optimal Power Flows , 2008 .

[8]  T Meier,et al.  Electric power train configurations and their transmission systems , 2010, SPEEDAM 2010.

[9]  James Gramling.  Fully Integrated IVT-Regenerative Braking , 2014 .

[10]  Aldo Sorniotti,et al.  Selection of the Optimal Gearbox Layout for an Electric Vehicle , 2011 .

[11]  Joao M. C. Sousa,et al.  Efficiency, cost and life cycle CO2 optimization of fuel cell hybrid and plug-in hybrid urban buses , 2014 .

[12]  Giacomo Mantriota,et al.  Fuel Consumption of a Mid Class Vehicle with Infinitely Variable Transmission , 2001 .

[13]  Giuseppe Carbone,et al.  A comparison of the performances of full and half toroidal traction drives , 2004 .

[14]  Chris Brace,et al.  Preliminary Results from Driveability Investigations of Vehicles with Continuously Variable Transmis , 1999 .

[15]  A. Sorniotti,et al.  A Four-Wheel-Drive Fully Electric Vehicle Layout with Two-Speed Transmissions , 2014, 2014 IEEE Vehicle Power and Propulsion Conference (VPPC).

[16]  Giacomo Mantriota,et al.  Reversibility of Power-Split Transmissions , 2011 .

[17]  Aldo Sorniotti,et al.  Optimization of a multi-speed electric axle as a function of the electric motor properties , 2010, 2010 IEEE Vehicle Power and Propulsion Conference.

[18]  Marc Ross,et al.  Evaluation of energy consumption, emissions and cost of plug-in hybrid vehicles , 2009 .

[19]  Paul D. Walker,et al.  Gear shift schedule design for multi-speed pure electric vehicles , 2015 .

[20]  Giacomo Mantriota,et al.  Power split continuously variable transmission systems with high efficiency , 2001 .

[21]  Giacomo Mantriota,et al.  Power flows and efficiency in infinitely variable transmissions , 1999 .

[22]  Aldo Sorniotti,et al.  A novel clutchless multiple-speed transmission for electric axles , 2013 .

[23]  T. Hofman,et al.  Energy efficiency analysis and comparison of transmission technologies for an electric vehicle , 2010, 2010 IEEE Vehicle Power and Propulsion Conference.

[24]  Giacomo Mantriota,et al.  Effect of the Ratio Spread of CVU in Automotive Kinetic Energy Recovery Systems , 2013 .

[25]  Chee Wei Tan,et al.  A review of energy sources and energy management system in electric vehicles , 2013 .

[26]  Iqbal Husain,et al.  Electric and hybrid vehicles : design fundamentals , 2003 .

[27]  Roger A. Dougal,et al.  Dynamic lithium-ion battery model for system simulation , 2002 .

[28]  T. Holdstock,et al.  Energy consumption analysis of a novel four-speed dual motor drivetrain for electric vehicles , 2012, 2012 IEEE Vehicle Power and Propulsion Conference.

[29]  Paul D. Walker,et al.  Two Motor Two Speed Power-Train System Research of Pure Electric Vehicle , 2013 .

[30]  Dominik Karbowski,et al.  Instantaneously Optimized Controller for a Multimode Hybrid Electric Vehicle , 2010 .

[31]  Q. Ren,et al.  Effect of transmission design on Electric Vehicle (EV) performance , 2009, 2009 IEEE Vehicle Power and Propulsion Conference.

[32]  Stephan Rinderknecht,et al.  Electric Power Train Configurations with Appropriate Transmission Systems , 2011 .

[33]  Giuseppe Carbone,et al.  Mechanical hybrid KERS based on toroidal traction drives: An example of smart tribological design to improve terrestrial vehicle performance , 2013 .

[34]  Marc Ross,et al.  Analysis and simulation of “low-cost” strategies to reduce fuel consumption and emissions in conventional gasoline light-duty vehicles , 2009 .

[35]  FRANCESCO BOTTIGLIONE,et al.  A Simple Approach for Hybrid Transmissions Efficiency , 2012 .

[36]  Hiroshi Fujimoto,et al.  Efficiency analysis of powertrain with toroidal continuously variable transmission for Electric Vehicles , 2013, IECON 2013 - 39th Annual Conference of the IEEE Industrial Electronics Society.

[37]  J.M. Miller,et al.  Hybrid electric vehicle propulsion system architectures of the e-CVT type , 2006, IEEE Transactions on Power Electronics.

[38]  Guido Herrmann,et al.  Current hybrid-electric powertrain architectures: Applying empirical design data to life cycle assessment and whole-life cost analysis , 2014 .

[39]  Giacomo Mantriota.  Performances of a parallel infinitely variable transmissions with a type II power flow , 2002 .

[40]  Andrew A. Frank.  Engine Optimization Concepts for CVT-Hybrid Systems to Obtain the Best Performance and Fuel Efficiency , 2004 .

[41]  Aldo Sorniotti,et al.  Analysis and simulation of the gearshift methodology for a novel two-speed transmission system for electric powertrains with a central motor , 2012 .