PROBLEM TO BE SOLVED: To provide a front underfloor rectification structure of an automobile which makes compatible both the reduction of air force resistance and the suppression of the generation of turbulence by making a traveling wind (underfloor wind) abut on a deflector vertical wall after being inclined thereto in a position corresponding to a front wheel front surface, mildly guiding downwardly the traveling wind at the inside of a vehicle width direction rather than front wheels at the linear forward traveling of a vehicle, also making the traveling wind linearly flow into a wheel house while straddling a vertical wall part at which a lower protrusion amount is small, and then making engine-room leak air progress along the wind.SOLUTION: An inclined face part 83 is extended in a vehicle width direction from a position corresponding to front surfaces of front wheels up to a position corresponding to the inside of the front wheels in a vehicle width direction, the inside of the vehicle width direction is formed into a flat shape in a front surface cross section view, and also formed into a substantially-linear shape in a vehicle fore-and-aft direction while being inclined in a front-high/rear-low shape in a side face view, and a region which opposes an area at the inside of the vehicle width direction rather than the front wheels at vehicle linear forward traveling at a rear part of the inclined face part 83 of a deflector vertical wall 81 is made small in a lower protrusion amount smaller than that in a region opposing the front surfaces of the front wheels.SELECTED DRAWING: Figure 8
【課題】前輪正面と対応する位置では傾斜面部で走行風(床下風)をデフレクタ縦壁に対して傾けた後に当てると共に、車両直進時の前輪よりも車幅方向内側の走行風を緩やかに下方にガイドして下方突出量が小さい縦壁部を超えてホイールハウス内に真っ直ぐ流して、この風にエンジンルーム漏れ空気を沿わせて、空力抵抗の低減と、乱流発生の抑制との両立を図る自動車の前部床下整流構造を提供する。【解決手段】傾斜面部83が、前輪の正面と対応する位置から前輪の車幅方向内方と対応する位置まで車幅方向に延設されると共に、その車幅方向内方部が正面断面視においてフラット形状で、かつ側面視において前高後低状に傾斜して車両前後方向に略直線状に形成され、デフレクタ縦壁81の傾斜面部83後方で車両直進時の前輪よりも車幅方向内側の領域と対向する部位は、前輪正面と対向する部位よりも下方突出量が小さくなるよう形成されたことを特徴とする。【選択図】図8
FRONT UNDERFLOOR RECTIFICATION STRUCTURE OF AUTOMOBILE
自動車の前部床下整流構造
22.12.2016
Patent
Elektronische Ressource
Japanisch
IPC: | B62D MOTOR VEHICLES , Motorfahrzeuge |