Lotus F1 Team announces that Naoki Tokunaga, Deputy Technical Director, will leave the team at the end of this week to become Renault Sport F1's Technical Director - New Generation Power Unit. He adopts this new position with the full blessing of the team. The position of Deputy Technical Director will remain vacant for the foreseeable future.Naoki joined Enstone in 2000 as a Vehicle Dynamics Engineer. He was promoted to Head of Control Systems in 2002 and to Deputy Technical Director in 2010. His input on the design of the E20, including on KERS systems and integration, has been invaluable.Lotus F1 Team wishes Naoki success in his new venture.James Allison, Technical Director of Lotus F1 Team: 'While we are sad on a personal level to see Naoki leave Enstone, we believe this move will be overall positive for Renault Sport F1's customers. We would like to thank Naoki for the tremendous contribution he has made to our team during the 12 years he has been with us and we look forward to the performance he will bring us (and all of Renault Sport F1's client teams) in his new role.'