Patent ID: 7717494
Filing Date: 2010-05-18
Classification: B62D,Y02T

Abstract:
1. A vehicle-body underside airflow controller comprising: an aerodynamic member attached to the underside of a vehicle-body at the rear of a vehicle such that a rise angle formed between a part inclined upward on the rear side of the vehicle when seen from the side of the vehicle is changeable and that applies force to the vehicle by an airflow flowing at the underside; changing means for changing the rise angle by moving the vehicle-rear side of the aerodynamic member in the vertical direction of the vehicle; detecting means for detecting at least one state of the vehicle among vehicle speed, pressure generated by the airflow at the underside of the aerodynamic member and occurrence of rolling of the vehicle; and control means for controlling the changing means such that the rise angle becomes smaller than the predetermined angle from the initial position of the predetermined angle at a speed higher than a predetermined speed of the vehicle when the aerodynamic performance by means of the aerodynamic member is required on the basis of a result detected by the detecting means.