The carbon fiber-reinforced plastic Ford Focus hood displayed at the Composites Europe event in Dusseldorf, Germany is constructed from the super-strong material usually associated with bespoke racing vehicles or high-performance sports cars.
The prototype hood weighs more than 50% less than a standard steel version. As a result of progress made during an ongoing research project involving engineers from the Ford European Research Centre, production time for an individual carbon fiber bonnet is fast enough to be employed on a production line—a significant step towards increased usage of lightweight materials in Ford vehicles.
Carbon fiber hood may be a long time coming for mass market vehicles.
"It's no secret that reducing a vehicle's weight can deliver major benefits for fuel consumption, but a process for fast and affordable production of carbon fiber automotive parts in large numbers has never been available," said Inga Wehmeyer, advanced materials and processes research engineer, Ford European Research Centre. "By partnering with materials experts through the Hightech.NRW research project, Ford is working to develop a solution that supports cost efficient manufacturing of carbon fiber components."
The involvement of Ford European Research Centre in the Hightech.NRW research project follows Ford's partnership with Dow Automotive Systems ; a collaboration announced earlier this year that will investigate new materials, design processes and manufacturing techniques.
Dow Automotive Systems and Ford will focus on establishing an economical source of automotive-grade carbon fiber, as well as high-volume manufacturing methods: both critical to increasing the range of future Ford battery electric vehicles and plug-in hybrid electric vehicles.
Carbon fiber offers a very high strength-to-weight ratio. It is up to five times as strong as steel, twice as stiff, and one-third the weight. Advanced materials such as carbon fiber are key to Ford's plans to reduce the weight of its cars by up to 340 kg by the end of the decade.
"There are two ways to reduce energy use in vehicles: improving the conversion efficiency of fuels to motion and reducing the amount of work that powertrains need to do," said Paul Mascarenas, Ford chief technical officer and vice president, Research and Innovation. "Ford is tackling the conversion problem primarily through downsizing engines with EcoBoost and electrification while mass reduction and improved aerodynamics are keys to reducing the workload."
Ford has partnered with specialists from the Institute of Automotive Engineering at RWTH Aachen University, Henkel, Evonik, IKV (Institute of Plastics Processing), Composite Impulse and Toho Tenax for the course of the Hightech.NRW research project.
Funded by the German state of North Rhine-Westphalia, the project began in 2010 and, despite being set to continue until September 2013, has already made significant progress towards its targets of:
- Developing a cost effective method to manufacture carbon fiber composites for body panel applications that can be incorporated into existing vehicle production processes
- Significantly reducing individual component production times
- Reducing the amount of finishing work required to acceptable standards
- Meeting requirements for painting
- At least 50 percent reduction in component weight
The refined gap-impregnation process works by introducing resin to pre-formed carbon fiber textile material in a fast, stable