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Technical Paper

Multi-Domain Optimization for Fuel Economy Improvement of HD Trucks

2019-04-02
2019-01-0312
Fuel costs are significant portion of operational costs of freight owners in China. Reduction is fuel consumption for a given trip is key to increase maximize freight efficiency and increase the bottom-line of freight. In this paper, fuel economy improvements of cab over style 49T heavy duty Foton truck powered by Cummins 12 Liter engine are studied and applied systematically. In addition to finding improvements at engine level, majority of fuel efficiency improvements are also identified at vehicle level involving vehicle design (more aerodynamic), component selection/matching (low rolling resistance tires) and powertrain electronic features integration (shift schedule/electronic trims). These powertrain features include Cummins adaptive torque modulation and transmission neutral coasting. 3D CFD (ANSYS Fluent) is used to carry out aerodynamic study of truck and Cummins Vehicle Mission Simulation (VMS) is used to study powertrain integration features.
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