| 主权项 |
1. A car comprising:
a car body; and a rear spoiler, which is integral with the car body, is arranged in a rear position and projects from an outline of the car body to deflect the air flow upwards so that the air flow skims over an upper surface of said rear spoiler; wherein the rear spoiler comprises at least one through aerodynamic duct, which starts in an inlet opening arranged in correspondence with an initial end of the rear spoiler and ends in an outlet opening arranged in correspondence with a final end of the rear spoiler, so that a part of the air flow hitting the rear spoiler flows above the rear spoiler skimming over the upper surface of said rear spoiler and the remaining part of the air flow hitting the rear spoiler flows through the rear spoiler crossing the aerodynamic duct; wherein: the aerodynamic duct has, on the inside, a narrowing, which consists of a deflector profile that projects towards an inside of the aerodynamic duct, is arranged in a central position along the aerodynamic duct and locally reduces an area of a cross section; and wherein the area of the cross section of the aerodynamic duct upstream of the narrowing is equal to the area of the cross section of the aerodynamic duct downstream of the narrowing; wherein the deflector profile is movable so as to change its position on the inside of the aerodynamic duct between a position of maximum incidence and thus maximum narrowing and a position of minimum incidence and thus of minimum narrowing to increase/decrease the negative lift, i.e., the downforce, generated by the rear spoiler and at the same time decrease/increase the drag generated by the rear spoiler; and wherein an electric motor is provided, which is mechanically connected to the deflector profile so as to move the position of the deflector profile on the inside of the aerodynamic duct between the position of maximum incidence and the position of minimum incidence. |
