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Impact of Lateral Alignment on the Energy Savings of a Truck Platoon
Technical Paper
2020-01-0594
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
A truck platooning system was tested using two heavy-duty tractor-trailer trucks
on a closed test track to investigate the sensitivity of intentional lateral
offsets over a range of intervehicle spacings. The fuel consumption for both
trucks in the platoon was measured using the SAE J1321 gravimetric procedure
while travelling at 65 mph and loaded to a gross weight of 65,000 lb. In
addition, the SAE J1939 instantaneous fuel rate was calibrated against the
gravimetric measurements and used as proxy for additional analyses. The testing
campaign demonstrated the effects of intervehicle gaps, following-vehicle
longitudinal control, and manual lateral control. The new results are compared
to previous truck-platooning studies to reinforce the value of the new
information and demonstrate similarity to past trends. Fuel savings for the
following vehicle was observed to exceed 10% at closer following distances. The
results showed that energy savings generally increased in a non-linear fashion
as the gap was reduced. The impact of different following-truck lateral offsets
had a measurable impact, with up to 4% reduction in total fuel-savings (relative
to an isolated vehicle condition) observed for offsets up to 1.3 m. The
fuel-consumption savings on the straight segments of the track exceeded those on
the curved segments by upwards of 6% and highlight some potential differences
expected between close-track testing and on-highway use.
Authors
Topic
Citation
Lammert, M., McAuliffe, B., Smith, P., Raeesi, A. et al., "Impact of Lateral Alignment on the Energy Savings of a Truck Platoon," SAE Technical Paper 2020-01-0594, 2020, https://doi.org/10.4271/2020-01-0594.Data Sets - Support Documents
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