The invention discloses an energy-saving and resistance-reducing device for a truck, which belongs to the field of automobile aerodynamics. The energy-saving device comprises a base playing a supporting role and a vortex generator fixed above the base and used for developing a laminar flow boundary layer into a turbulent flow boundary layer and delaying separation of the boundary layer; the vortex generator is perpendicular to the base, passes through the center point of the base and forms an included angle of N degrees with the center line of the base, and the surface shape of the vortex generator comprises an upper cambered surface, an upper parallel surface and a side surface; one end of the upper cambered surface is connected with the bottom edge of the base, the other end of the upper cambered surface is smoothly connected with one end of the upper parallel surface, the other end of the upper parallel surface is vertically connected with the upper end of the side surface, and the lower end of the side surface is vertically connected with the other bottom edge of the base; the bottom edge of the base is parallel to the other bottom edge of the base. Based on aerodynamics knowledge, the boundary layer is fully developed into the turbulent flow boundary layer in advance, so that the boundary layer is more difficult to separate, a separation area and a negative pressure area are reduced, and the effects of energy conservation and emission reduction are achieved.
本发明公开了一种货车用节能减阻装置,属于汽车空气动力学领域,该节能装置包括起支撑作用的底座及固定在所述底座上方用于将层流附面层发展为湍流附面层、延迟附面层的分离的涡流发生器;涡流发生器与底座垂直设置、通过底座中心点且与底座的中心线成N°的夹角,涡流发生器为表面形状包括:上弧面、上平行面和侧面;上弧面一端与底座的底边相连接、上弧面的另一端与上平行面一端平滑连接,上平行面的另一端与侧面的上端垂直连接,侧面的下端与底座的另一底边垂直连接;底座的底边与底座的另一底边平行;本发明基于空气动力学知识,通过将附面层提前、充分发展成湍流附面层使其更不易分离,从而减小了分离区、负压区,进而达到节能减排的作用。
Energy-saving and resistance-reducing device for truck
一种货车用节能减阻装置
2021-08-20
Patent
Elektronische Ressource
Chinesisch
IPC: | B62D MOTOR VEHICLES , Motorfahrzeuge |
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