Renault Sport boss Jean-Michel Jalinier says one of the biggest challenges facing F1 suppliers in V6 is better fuel economy while maintaining power output. Renault's 2014 V6 turbocharged F1 engine, dubbed the Energy F1-2014, went on display at the Paris airshow on Friday. Already two teams have signed up to use it, Red Bull and Toro Rosso, while Renault expected to secure Lotus and Caterham in the near future. Jalinier told adamcooperf1.com: "From next year, one of greatest challenges in F1 will be to maximise energy efficiency and fuel economy while maintaining the power output and performance expected of F1 cars. "Renault has pioneered this technology in its road car engine...
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