AERODYNAMICAL POWER DEVICE FOR VEHICLE

PROBLEM TO BE SOLVED: To attain reduction of air resistance at high speed traveling and reduction of braking load at deceleration without reducing appearance of a vehicle during stopping. SOLUTION: In the aerodynamical power unit 32 provided on the vehicle, a recession part 36 is formed on a curved part 22, an opening 34 is provided on the recession part, and an opening part 44 opened toward a vehicle back surface side is formed on a back surface panel 18. Further, the recession part and the opening part are communicated by a communication pipe 48 and when the vehicle back surface becomes a negative pressure by an air stream during high speed traveling, air in the recession part is sucked, the opening is closed and a lid member is turned into the recession part. Thereby, an inner surface 36A of the recession part becomes an aero-kick surface, the air stream from an upper surface panel along the curved part is peeled off from the curved part and the negative pressure of the vehicle back surface is reduced. Further, at deceleration of the vehicle, by closing the opening by the lid member, air resistance becomes higher than before deceleration, and increase of the braking load by reduction of air resistance is prevented. COPYRIGHT: (C)2008,JPO&INPIT