Experimental testing and simulations of speed variations impact on fuel consumption of conventional gasoline passenger cars |
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| Institution: | 1. LIVIC-COSYS, IFSTTAR, 25 allée des Marronniers, 78000 Versailles, France;2. Sorbonne Universités, UPMC Univ Paris 06, CNRS, Institute of Intelligent Systems and Robotics (ISIR), F-75005 Paris, France;3. Technocentre Guyancourt, 1, avenue du Golf, 78084 Guyancourt, France;4. UBIAE, INSERM U902, Université d’Evry-Val d’Essonne, Bd Francois Mitterrand, Batiment Maupertuis, 91025 Evry, France;5. College of Transportation Engineering, TongJi University, 4800 cao’an road, Shanghai, China;6. Cerema, Direction Sud-Ouest, 1 Avenue du Colonel Roche, F-31400, Toulouse, France;1. Centre for Energy Studies, Indian Institute of Technology Delhi, New Delhi 110016, India;2. Department of Physics, Indian Institute of Technology Delhi, New Delhi 110016, India;3. Inter University Accelerator Centre, Aruna Asaf Ali Road, New Delhi 110067, India;1. CSIR-National Institute of Oceanography, Goa 403004, India;2. Directorate General of Hydrocarbons, Noida, U.P 201301, India |
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| Abstract: | Speed variations are considered as an alternative for reducing fuel consumption during the use phase of passenger cars. It explores vehicle engine operating zones with lower fuel consumption, thus making possible a reduction in fuel consumption when compared to constant speed operation. In this paper, we present an evaluation of two conditions of speed variations: 50–70 km/h and 90–110 km/h using numerical simulations and controlled tests. The controlled tests performed on a test track by a professional pilot show that a reduction in fuel consumption is achievable with a conventional gasoline passenger car, with no adaptations for realizing speed variations. Numerical simulations based on a backward quasi-static powertrain model are used to evaluate the potential of speed variations for reducing fuel consumption in other speed variation conditions. When deceleration is performed with gear in neutral position, simulations show that speed variations are always correlated to a lower fuel consumption. This was suspected through previous numerical tests or evaluation on test bench but not in controlled tests conditions. |
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| Keywords: | Fuel consumption Energy demand Innovation Biologically inspired design |
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