National Automotive Center Current Trends in Vehicle Driveline

National Automotive Center Current Trends in Vehicle Driveline Modeling and Simulation Richard Jacobson Dan Kedziorek Committed to Excellence

National Automotive Center Introduction • Driveline analysis is an important part of the vehicle design process • The tool for driveline analysis depends on the application • Several driveline analysis programs will be discussed with various levels of compelxity • Make comparisons and help select the right tool Committed to Excellence

National Automotive Center Topics • • Description of a Vehicle Driveline Reasons for Driveline Simulation Descriptions of Selected Simulations Conclusions Committed to Excellence

National Automotive Center Description of a Vehicle Driveline ADVISOR 2002 Driveline Diagram Committed to Excellence

National Automotive Center Reasons for Driveline Simulation • Evaluate Vehicle Performance – Top Speed, Acceleration, Fuel consumption, Cross-Country Speed (truck/SUV), Shifting, Emissions, Handling, Vibration • Evaluate Vehicle Mobility – Top Speed, Acceleration, Fuel consumption, Cross-Country Speed, Shifting, Emissions, Speed on Slopes, Obstacle Crossing Committed to Excellence

National Automotive Center Several simulations • Propulsion System Performance Simulation (TARDEC in-house program) • System for Computer Aided ANalysis (SCAAN) from Allison Transmission • ADVISOR 2002 National Renewable Energy Lab (NREL) • Ricardo Libraries for MSC Easy 5 from RICARDO • GT-SUITE from Gamma Technologies • Powertrain Control Research Laboratory (PRCL) University of Wisconsin-Madison Committed to Excellence

National Automotive Center Propulsion System Performance Simulation • Developed at TARDEC • Low Resolution • Limited performance analysis – Acceleration – slope performance – fuel consumption Committed to Excellence

National Automotive Center ADVISOR 2002 • • • High resolution Extensive input and output Graphical User Interface Customizable (built on Mat. Lab) Detailed output Committed to Excellence

National Automotive Center ADVISOR 2002 Example Committed to Excellence

National Automotive Center Easy 5 Ricardo Libraries • • • Many pre-built components Graphical User Interface Takes some work to learn Customizable (can link to Mat. Lab) Extensive outputs Committed to Excellence

National Automotive Center RICARDO Libraries for Easy 5 Example Committed to Excellence

National Automotive Center System for Computer Aided ANalysis SCAAN • A service provided by Allison Transmission • Low resolution • Limited Performance Analysis – Acceleration – Slope performance Committed to Excellence

National Automotive Center Powertrain Control Research Laboratory • Custom build simulations • Has provided driveline simulations to the Army for the following: – HMMWV – M 916/M 870 – M 1 A 1 – M 2 A 2 Committed to Excellence

National Automotive Center Gamma Technologies GT-SUITE • • High resolution Highly detailed engine characteristics Graphical User Interface Can be coupled with CFD code and SIMULINK • User code can be incorporated Committed to Excellence

National Automotive Center Conclusions • Different levels of fidelity • Different things simulated • What does it all mean – There are many different tools – Can help speed development of advanced drivelines • Future Work – Increase use of Easy 5 Ricardo Libraries – Advance the state of driveline simulation at TARDEC Committed to Excellence