Experiment and Simulation of Medium-Duty Tactical Truck for Fuel Economy Improvement

Yeau-Jian Gene Liao and Allen M. Quail
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Yeau-Jian Gene Liao: Wayne State University, 4855 Fourth St., Detroit, MI 48202, USA
Allen M. Quail: ASRC-WTSI, Inc., 35660 Beattie Dr., Sterling Heights, MI 48312, USA

Energies, 2011, vol. 4, issue 2, 1-18

Abstract: Fuel economy improvement on medium-duty tactical truck has and continues to be a significant initiative for the U.S. Army. The focus of this study is the investigation of Automated Manual Transmissions (AMT) and mild hybridization powertrain that have potential to improve the fuel economy of the 2.5-ton cargo trucks. The current platform uses a seven-speed automatic transmission. This study utilized a combination of on-road experimental vehicle data and analytical vehicle modeling and simulation. This paper presents the results of (1) establishment of a validated, high fidelity baseline analytical vehicle model, (2) modeling and simulation of two AMTs and their control strategy, (3) optimization of transmissions shift schedules, and (4) modeling and simulation of engine idle stop/start and Belt-Integrated-Starter-Generator (B-ISG) systems to improve the fuel economy. The fuel economy discrepancy between experimental average and the baseline simulation result was 2.87%. The simulation results indicated a 14.5% and 12.2% fuel economy improvement for the 10-speed and 12-speed AMT respectively. A stop/start system followed by a B-ISG mild hybrid system incorporating regenerative braking was estimated to improve fuel economy 3.39% and 10.2% respectively.

Keywords: AMT; automated manual transmission; fuel economy; transmission shift schedule; tactical truck (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2011
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Citations: View citations in EconPapers (1)

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