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The papers in these workshops represent the personal views of the individual authors and do not necessarily represent the views of their companies, organisations or the IEA.
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Energy Efficient Tyres: Improving the On-Road Performance of Motor Vehicles |
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| Location and date(s) of workshop: |
IEA, Paris: 15-16 November 2005 |
| Organiser(s): | IEA |
| Contact(s): |
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Background: |
Almost 20% of a car’s fuel consumption is used to overcome rolling resistance in the tyres. Manufacturers have already achieved significant reductions in rolling resistance but, with today’s high fuel prices, it makes sense to carefully examine the feasibility of further improvements. This workshop will examine how rolling resistance is measured and how these measurements translate into reductions in fuel consumption. Technical prospects for further reductions in rolling resistance will be examined, with careful consideration given to safety, durability and other factors. Finally, the workshop will discuss the feasibility of establishing an internationally harmonised procedure for rating the energy efficiency of tyres. Can the energy efficiency of other automobile components be measured? An extra session of the workshop will examine the feasibility of harmonised procedures to test and rate the efficiency of components, many of which are not fully reflected in official fuel consumption tests or are purchased by consumers in the aftermarket. The workshop will focus on lights, air conditioners (and reductions in cooling load), luggage racks and lubricants. This workshop will bring together policymakers, manufacturers and technical experts. While the IEA cannot establish international standards or treaties, the frameworks for future agreements are often established at these workshops. |
| Links to relevant documents: |
Summary Final Agenda List of participants |
| Proceedings: | Day 1
Session 1 - Energy Efficient Tyres Welcome by Session Chair - Steve Perkins (ECMT) | book Why is the IEA concerned about energy use in transportation? - Claude Mandil, Executive Director (IEA) | G8 Action Plan | G8 Update Why tyres? - Alan Meier (IEA) Tyres, technology, and energy consumption - K.G. Duleep (Energy & Environmental Analysis, Inc., USA) The challenge of energy efficient tyres - Christophe Penant (Michelin, France) Session 2 - Government Activities California’s programs to improve tyre efficiency - James D. Boyd (CEC, USA) U.S. Government procurement specifications for low-rolling resistance tyres and other motor vehicle components - Joan Glickman (Department of Energy, USA) Europe’s strategy to raise tyre efficiency: Green Paper and Eco-Design Directive - Luc Werring (European Commission) Session 3 - Measuring Low Rolling Resistance Tyres Procedures to measure tyre rolling resistance - Klaus-Peter Glaeser (BASt, Germany) Rolling resistance measurement on test versus road surfaces - Ulf Sandberg (VTI, Sweden) Development of a new measurement protocol - Malcolm Jones & Christophe Penant (ETRTO) Test method development project: assessing rolling resistance, fuel economy, and tread wear - Tracey Norberg (RMA) Session 4: Translating Rolling Resistance Data into Energy Savings California’s investigation of low rolling resistance tyres - Arnold Ward (CEC, USA) Empirical analysis of rolling resistance and performance trade-offs - Chris Calwell (Ecos Consulting, USA) Day 2 Session 5: Trade-offs U.S. National Tire Efficiency Study, National Academy of Sciences - Joseph Walter (University of Akron, USA) | NAS study | book Integrated environmental approach to tyres in the Dutch Innovation Program on Noise (IPG) - Chiel Roovers (M+P Consulting Engineers, Netherlands) | paper Are safety and longwear life compatible with fuel efficient tyres? - Dominique Aimon (Michelin) Tyre materials, safety constraints, and performance - André Le Gal (DIK, Germany) Session 6: Labelling Consumer views on efficiency labelled replacement tyres - Roland Hwang (NRDC, USA) | paper Supporting the development of low energy tyres - Dominique Aimon (Michelin) Session 7: Other technologies to improve on-road performance A component approach to improving vehicle’s on-road efficiency - Alan Meier (IEA) Tyre pressure monitoring systems - Kevin Stock (Schrader Electronics, UK) Update on energy efficiency improvement in mobile air conditioning systems - Denis Clodic (Ecole des Mines, France) Fuel efficient lubricants - Chris Calwell (Ecos Consulting, USA) Potential improvements in vehicle lighting - Thomas Guéret (IEA) |
