This content is not included in your SAE MOBILUS subscription, or you are not logged in.
A Driver Advisory Tool to Reduce Fuel Consumption
ISSN: 0148-7191, e-ISSN: 2688-3627
Published March 10, 2013 by SAE International in United States
Annotation ability available
Driver behaviour can strongly affect fuel consumption, and driver training in eco-driving techniques has been shown to reduce fuel consumption by 10% on average. However the effects of this training can be short-lived, so there is an apparent need for continuous monitoring of driver behaviour. This study presents a driver advisory tool which encourages eco-driving, and its evaluation in the field. The system, developed by Ashwoods Automotive Ltd (UK) and the University of Bath (UK), is aimed at fleet operators of light commercial vehicles, where the driver is typically a company employee. A significant strength of the system is that it has been designed for easy integration with the vehicle CAN-bus, reducing complexity and cost. By considering the Inertial Power Surrogate (speed times acceleration) the core algorithm is able to identify behaviour which is likely to increase fuel consumption. The algorithm also enforces the advice of the Gear Shift Indicator to encourage earlier upshifting. Fuel saving is therefore encouraged both by reducing the power demand of the drive cycle and by operating the engine in a more efficient region. Instantaneous visual feedback to the driver is augmented by audible warnings, which avoids the need for the driver to concentrate on the display, reducing cognitive loading. Reports on driver performance are made available to the fleet manager so that fuel efficient and safe driving can be encouraged.
Trials of the system ran for four weeks and included 15 vehicles from 7 companies; a total of 39 300 km of trip data were collected during more than 1 100 hours of real world driving. Results show an average fleet reduction in fuel consumption of 7.6%, with some vans showing savings up to 12%. Furthermore, reductions of over 10% in both average engine speed and throttle activation were observed. It was also noted that the system shows strong potential for synergetic use with a hybrid electric powertrain, where modifying driver behaviour may facilitate energy harvesting from regenerative braking.
|Technical Paper||A Study of Low-Friction Road Estimation using an Artificial Neural-Network|
|Technical Paper||Criteria for Coasting on Highways for Passenger Cars|
|Technical Paper||The Origin and Uses of the Economy Van|
CitationVagg, C., Brace, C., Hari, D., Akehurst, S. et al., "A Driver Advisory Tool to Reduce Fuel Consumption," SAE Technical Paper 2012-01-2087, 2013, https://doi.org/10.4271/2012-01-2087.
- European Conference of Ministers of Transport “Making Cars More Fuel Efficient: Technology and Policies for Real Improvements on the Road,” International Energy Agency Paris (France) 92-821-0343-9:33-35 2005
- Young, M.S. Birrell, S.A. Stanton, N.A. “Safe driving in a green world: A review of driver performance benchmarks and technologies to support ‘smart’ driving,” Applied Ergonomics 42 4 533 539 2011 10.1016/j.apergo.2010.08.012
- Zarkadoula, M. Zoidis, G. Tritopoulou, E. “Training urban bus drivers to promote smart driving: A note on a Greek eco-driving pilot program,” Transportation Research Part D: Transport and Environment 12 6 449 451 2007 10.1016/j.trd.2007.05.002
- Beusen, B. Broekx, S. Denys, T. Beckx, C. et al. “Using on-board logging devices to study the longer-term impact of an eco-driving course,” Transportation Research Part D: Transport and Environment 14 7 514 520 2009 10.1016/j.trd.2009.05.009
- af Wåhlberg, A.E. “Long-term effects of training in economical driving: Fuel consumption, accidents, driver acceleration behavior and technical feedback,” International Journal of Industrial Ergonomics 37 4 333 343 2007 10.1016/j.ergon.2006.12.003
- van der Voort, M. Dougherty, M.S. van Maarseveen, M. “A prototype fuel-efficiency support tool,” Transportation Research Part C: Emerging Technologies 9 4 279 296 2001 10.1016/s0968-090x(00)00038-3
- Wu, C. Zhao, G. Ou, B. “A fuel economy optimization system with applications in vehicles with human drivers and autonomous vehicles,” Transportation Research Part D: Transport and Environment 16 7 515 524 2011 10.1016/j.trd.2011.06.002
- Larsson, H. Ericsson, E. “The effects of an acceleration advisory tool in vehicles for reduced fuel consumption and emissions,” Transportation Research Part D: Transport and Environment 14 2 141 146 2009 10.1016/j.trd.2008.11.004
- Ericsson, E. “Variability in urban driving patterns,” Transportation Research Part D: Transport and Environment 5 5 337 354 2000 10.1016/s1361-9209(00)00003-1
- Ericsson, E. “Independent driving pattern factors and their influence on fuel-use and exhaust emission factors,” Transportation Research Part D: Transport and Environment 6 5 325 345 2001 10.1016/s1361-9209(01)00003-7
- Nam, E.K. Gierczak, C.A. Butler, J.W. “A Comparison of Real-World and Modelled Emissions Under Conditions of Variable Driver Aggressiveness,” 82nd Annual Meeting of the Transportation Research Board Washington D.C. (USA) January 12 16 2003
- Fomunung, I. Washington, S. Guensler, R. “A statistical model for estimating oxides of nitrogen emissions from light duty motor vehicles,” Transportation Research Part D: Transport and Environment 4 5 333 352 1999 10.1016/s1361-9209(99)00013-9
- Vagg, C. Brace, C.J. Akehurst, S. Hari, D. et al. “Development of a new method to assess fuel saving using gear shift indicators,” Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering 0 0 0 0 2012 10.1177/0954407012447761
- RITA “Table 1-14: U.S. Automobile and Truck Fleets by Use,” http://www.bts.gov/publications/national_transportation_statistics/html/table_01_14.html Oct. 2011
- RITA “Table 4-11: Light Duty Vehicle, Short Wheel Base and Motorcycle Fuel Consumption and Travel,” http://www.bts.gov/publications/national_transportation_statistics/html/table_04_11.html Apr. 2012
- RITA “Table 4-12: Light Duty Vehicle, Long Wheel Base Fuel Consumption and Travel,” http://www.bts.gov/publications/national_transportation_statistics/html/table_04_12.html Apr. 2012
- GreenRoad Driving Technologies Ltd. “Case Study: FirstGroup Focuses on Environment, Safety and Passenger Comfort,” http://cdn-www.greenroad.com/media/FirstGroup_GreenRoad-Case-Study_UK.pdf 2011