A control system for an active aerodynamics kit for an automobile

Abstract

The present invention proposes a control system for an automobile active aerodynamic kit, comprising a front wing component, a rear wing component, and an ECU controller. The front wing component and the rear wing component are respectively mounted on the front and rear of the vehicle body. The front wing component comprises a front wing throttle mechanism, and the front wing throttle mechanism is used to control the opening and closing of the front wing throttle channel; the rear wing component comprises a rear wing, a left rear wing throttle mechanism, and a right rear wing throttle mechanism. The ECU controller collects vehicle conditions for logical calculation and judgment, and controls the front wing throttle mechanism, the left rear wing throttle mechanism, and the right rear wing throttle mechanism. The present invention has stable performance and high intelligence, greatly improves the aerodynamic performance of the automobile and the handling stability of high-speed cornering, and has good application value.

Description

Technical Field

[0001] The invention relates to the field of aerodynamics, in particular to an automobile aerodynamic kit control system. Background Art

[0002] Aerodynamic kits are one of the important devices for modern cars to improve vehicle driving stability and extreme performance. Aerodynamic resistance becomes the main resistance of the car when the car is driving at high speed. Aerodynamic lift will significantly reduce the adhesion of the car and have a significant impact on the car's power and fuel economy. Reasonable installation of aerodynamic kits on the car can effectively suppress the aerodynamic resistance and aerodynamic lift encountered when the car is driving at high speed, and improve the car's aerodynamic performance and high-speed cornering handling stability.

[0003] However, in actual driving, straight-line acceleration, braking and high-speed cornering are three typical operating conditions of a car. Since the appearance of a car is mostly fixed, when a car accelerates on a straight road, air resistance is one of the important factors affecting the acceleration performance and maximum speed of the car. It is difficult to solve this problem only by using a fixed car appearance design. During the braking process, in order to shorten the braking time and reduce the braking distance, it is necessary to provide the car with additional aerodynamic resistance to improve the braking performance of the car. Especially when the car is cornering at high speed, the positive pressure on the left and right wheels is inconsistent and the centrifugal force will cause the car to tilt, causing the outer wheel of the curve to break through the adhesion limit, making the car prone to dangerous conditions such as slipping. Since the downforce of the left and right wheels on the integral rear wing adjustable control system is consistent, it is difficult to solve these problems.

[0004] In response to the above problems, Chinese patent "CN104859730A" discloses an automobile assisted steering aerodynamic kit, which drives the movement of the two side tail wings of the rear of the automobile through a hydraulic device. Although it improves the aerodynamic performance of the automobile, considering the intelligent and lightweight issues of the automobile, the movement of the aileron is manually controlled by the driver through a button, which increases the difficulty of the driver's operation. Since the movement trajectory of the hydraulic control mechanism is limited and cannot be adjusted later, other airfoil angle combinations cannot be tried in actual measurements. Summary of the invention

[0005] The purpose of the present invention is to propose an automobile active aerodynamic kit control system in response to the above technical problems. The control system has stable performance, high intelligence, greatly improves the aerodynamic performance of the automobile and the handling stability of high-speed cornering, and has good application value.

[0006] The technical solution of the present invention is: an active aerodynamic kit control system for an automobile, comprising a front wing component, a rear wing component, and an ECU controller, wherein the front wing component and the rear wing component are respectively mounted on the front and rear of the vehicle body, and the characteristics are:

[0007] The front wing component includes a front wing body and a front wing throttle mechanism. The front wing body is provided with a front wing throttle channel. The front wing throttle mechanism is used to control the opening and closing of the front wing throttle channel. The front wing throttle mechanism includes a front wing throttle and a front wing servo steering gear. The front wing throttle is supported on the front wing body through a guide rail. The front wing servo steering gear is connected to the front wing throttle through a connecting rod mechanism to control the translation movement of the front wing throttle.

[0008] The tail wing components include a tail wing, a left tail wing throttle mechanism, a right tail wing throttle mechanism, a left guide groove, and a right guide groove. The tail wing includes a tail wing body. A left support plate and a right support plate are connected to the two sides of the tail wing body. The tail wing body is connected to the rear of the vehicle through the support plate and the right support plate. The inner cavity of the tail wing body is divided into a left guide cavity and a right guide cavity by a middle partition. A plurality of left spiral air passages are arranged in the left guide cavity, and a plurality of right spiral air passages are arranged in the right guide cavity. The left guide groove and the right guide groove are connected to the left guide cavity and the right guide cavity respectively. The left tail wing throttle mechanism and the right The tail throttle mechanisms are respectively arranged at the mouths of the left guide groove and the right guide groove; the left tail throttle mechanism includes a left tail servo steering gear, a left tail throttle, and a left tail throttle rotating shaft, the left tail throttle is connected to the left tail throttle rotating shaft, and the left tail servo steering gear is connected to the left tail throttle rotating shaft in a transmission manner; the right tail throttle mechanism includes a right tail servo steering gear, a right tail throttle, and a right tail throttle rotating shaft, the right tail throttle is connected to the right tail throttle rotating shaft, and the right tail servo steering gear is connected to the right tail throttle rotating shaft in a transmission manner;

[0009] The ECU controller collects vehicle speed signals, accelerator pedal opening signals, gear signals, brake pedal signals, steering wheel angle signals and roll angle signals for logical calculation and judgment, controls the front wing servo actuator, and further controls the opening and closing of the front wing throttle valve; the ECU controller performs logical calculation and judgment, controls the left and right tail wing servo actuators respectively, and further controls the opening and closing of the left and right tail wing throttle valves, so as to optimize the aerodynamic performance of the car.

[0010] The beneficial effects of the present invention are as follows: the ECU controller collects vehicle condition signals for calculation and logical judgment, controls the opening and closing of the front wing throttle channel through the front wing throttle mechanism, controls the left tail wing throttle mechanism and the right tail wing throttle mechanism, and then controls the opening and closing of the left guide groove and the right guide groove, thereby realizing intelligent opening and closing control of the front wing throttle and the left and right tail wing throttles, realizing the change of aerodynamic parameters such as air resistance and downforce according to the driving conditions of the automobile, replacing the change of the angle of attack of the tail wing body, simplifying the operation process of the actuator, the system has a fast motion response, reduces delay, and makes the control process more precise; the present invention has stable performance and a high degree of intelligence, greatly improves the aerodynamic performance of the automobile and the handling stability of high-speed cornering, and has good application value. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 A structural diagram of the tail wing of the automobile active aerodynamics kit control system of the present invention.

[0012] Figure 2 It is a schematic diagram of the internal airway of a partial tail wing of the present invention.

[0013] Figure 3 It is a structural diagram of the front wing component in the present invention.

[0014] Figure 4 Schematic diagram of airflow guidance of the front wing throttle in the present invention.

[0015] Figure 5 It is a flow chart of the electrical control system in the present invention.

[0016] Figure 6 It is a state diagram of the tail throttle of the present invention under the straight-line braking condition of the automobile.

[0017] Figure 7 It is a state diagram of the tail throttle of the present invention under the straight-line acceleration condition of the automobile.

[0018] Figure 8 A state diagram of the rear wing throttle of the present invention when the automobile is in a high-speed turning condition. DETAILED DESCRIPTION

[0019] Combined with Figure 1-8 As shown, the technical solution of the invention patent is clearly and completely described, an automobile active aerodynamic kit control system, including a left support plate 1, a left guide cavity 2, a middle partition 3, a left guide groove 4, a left tail throttle 5, a right tail throttle 6, a right guide groove 7, a tail body 8, a right guide cavity 9, a right support plate 10, a left spiral air duct 11, a right spiral air duct 12, a front wing body 13, a guide rail 14, a front wing servo steering engine 15, a front wing servo steering engine output shaft 16, a connecting rod mechanism 17, a guide column 18, a front wing throttle 19, a front wing throttle channel 20, a vehicle body 21, an airflow guide arrow 22, a left tail wing servo steering engine 23, a left tail wing throttle rotating shaft 24, a middle support plate 25, a right tail wing throttle rotating shaft 26, and a right tail wing servo steering engine 27, which are further described as follows in combination with the accompanying drawings:

[0020] The front wing component and the rear wing component are respectively installed at the front and rear of the vehicle body. The front wing component includes a front wing body 13 and a front wing throttle mechanism. The front wing body 13 is provided with a front wing throttle channel 20. The front wing throttle mechanism is used to control the opening and closing of the front wing throttle channel. The front wing throttle mechanism includes a front wing throttle 19 and a front wing servo steering engine 15. The front wing throttle 19 is supported on the front wing body 13 through a guide rail 14. The front wing servo steering engine 15 is connected to the front wing throttle 19 through a connecting rod mechanism 17 to control the translational movement of the front wing throttle.

[0021] The tail component includes a tail, a left tail throttle mechanism, a right tail throttle mechanism, a left guide groove, and a right guide groove. The tail includes a tail body 8. The left support plate 1 and the right support plate 10 are connected to the two sides of the tail body. The tail body 8 is connected to the rear of the vehicle through the support plate and the right support plate. The inner cavity of the tail body is divided into a left guide cavity 2 and a right guide cavity 9 by a middle partition 3. A plurality of left spiral air channels 11 are provided in the left guide cavity, and a plurality of right spiral air channels 12 are provided in the right guide cavity. The left guide groove 4 and the right guide groove 7 are respectively connected to the left guide cavity and the right guide cavity. The left tail throttle mechanism and the right tail throttle The mechanisms are respectively arranged at the mouths of the left guide groove and the right guide groove; the left tail throttle mechanism includes a left tail servo steering engine 23, a left tail throttle 5, and a left tail throttle rotating shaft 24, the left tail throttle 5 is connected to the left tail throttle rotating shaft 24, and the left tail servo steering engine 23 is connected to the left tail throttle rotating shaft 24 by transmission; the right tail throttle mechanism includes a right tail servo steering engine 27, a right tail throttle 6, and a right tail throttle rotating shaft 26, the right tail throttle 7 is connected to the right tail throttle rotating shaft 26, and the right tail servo steering engine 27 is connected to the right tail throttle rotating shaft 26 by transmission;

[0022] The ECU controller collects vehicle speed signals, accelerator pedal opening signals, gear signals, brake pedal signals, steering wheel angle signals and roll angle signals for logical calculation and judgment, controls the front wing servo actuator 15, and further controls the opening and closing of the front wing throttle valve 19; the ECU controller performs logical calculation and judgment, controls the left and right tail wing servo actuators 23 / 27 respectively, and further controls the opening and closing of the left and right tail wing throttle valves 5 / 6, so as to achieve the best aerodynamic performance of the car.

[0023] The above-mentioned (left and right) rear wing throttle rotation axis is located at the center position of the (left and right) rear wing throttle, and the new design of the left and right guide grooves is approximately L-shaped, which enables the airflow to flow quickly through the left and right guide cavities of the rear wing body. The airflow flows through the spiral air duct to release the downforce formed on the right and left sides of the rear wing body, so that the airflow provides a certain downforce for the lower surface of the rear wing body, provides additional negative lift for the car, and thus improves the system response speed.

[0024] Automobile linear braking conditions:

[0025] When the car is in a straight-line braking condition, the ECU controller collects vehicle condition signals for logical calculation and judgment, and controls the front wing throttle and the left and right rear wing throttles to be closed, providing additional air resistance and downforce for the car, so that the air resistance and downforce of the car reach the maximum, thereby shortening the braking distance.

[0026] Car straight-line acceleration conditions:

[0027] When the car is in a straight-line acceleration condition, the ECU controller collects the vehicle condition signal for logical calculation and judgment, and controls the front wing throttle and the left and right rear wing throttles to open. The airflow quickly enters the left and right guide cavities of the rear wing body through the left and right guide grooves. The airflow flows through the spiral air duct, releasing the downforce formed by the right and left sides of the rear wing body, minimizing the air resistance and downforce when the car is driving, and accelerating the airflow through the car body, thereby shortening the acceleration time and increasing the average speed of the car.

[0028] High-speed cornering conditions:

[0029] When the car turns left / right at high speed, the ECU controller collects the vehicle condition signal for logical calculation and judgment, controls the front wing throttle to close, and the right and left rear wing throttle to open, so that the downforce on the inside of the car reaches the maximum while reducing the downforce on the outside of the car, thereby achieving that the downforce on the inside of the car is greater than the outer wheel, and generates a restoring torque opposite to the roll torque, avoiding the car from skidding and improving the car's handling stability when cornering at high speed.

[0030] High-speed cornering-straight-line acceleration transition condition:

[0031] When the car is in a high-speed cornering and straight-line acceleration condition, the ECU controller collects vehicle condition signals for logical calculation and judgment, and determines whether the front wing throttle and the rear wing throttle on one side are open, thereby reducing the air resistance and downforce of the car when driving, accelerating the airflow through the car body, and increasing the car's driving speed.

Claims

1. A control method for an automobile active aerodynamic kit control system, wherein the automobile active aerodynamic kit control system comprises a front wing component, a rear wing component, and an ECU controller, wherein the front wing component and the rear wing component are respectively mounted on the front and rear of the vehicle body, and wherein: The front wing component includes a front wing body and a front wing throttle mechanism. The front wing body is provided with a front wing throttle channel. The front wing throttle mechanism is used to control the opening and closing of the front wing throttle channel. The front wing throttle mechanism includes a front wing throttle and a front wing servo steering gear. The front wing throttle is supported on the front wing body through a guide rail. The front wing servo steering gear is connected to the front wing throttle through a connecting rod mechanism to control the translation movement of the front wing throttle. The tail wing components include a tail wing, a left tail wing throttle mechanism, a right tail wing throttle mechanism, a left guide groove, and a right guide groove. The tail wing includes a tail wing body. A left support plate and a right support plate are connected to the two sides of the tail wing body. The tail wing body is connected to the rear of the vehicle through the support plate and the right support plate. The inner cavity of the tail wing body is divided into a left guide cavity and a right guide cavity by a middle partition. A plurality of left spiral air passages are arranged in the left guide cavity, and a plurality of right spiral air passages are arranged in the right guide cavity. The left guide groove and the right guide groove are connected to the left guide cavity and the right guide cavity respectively. The left tail wing throttle mechanism and the right The tail throttle mechanisms are respectively arranged at the mouths of the left guide groove and the right guide groove; the left tail throttle mechanism includes a left tail servo steering gear, a left tail throttle, and a left tail throttle rotating shaft, the left tail throttle is connected to the left tail throttle rotating shaft, and the left tail servo steering gear is connected to the left tail throttle rotating shaft in a transmission manner; the right tail throttle mechanism includes a right tail servo steering gear, a right tail throttle, and a right tail throttle rotating shaft, the right tail throttle is connected to the right tail throttle rotating shaft, and the right tail servo steering gear is connected to the right tail throttle rotating shaft in a transmission manner; The ECU controller collects vehicle speed signals, accelerator pedal opening signals, gear signals, brake pedal signals, steering wheel angle signals and roll angle signals for logical calculation and judgment, controls the front wing servo steering gear, and further controls the opening and closing of the front wing throttle valve; the ECU controller performs logical calculation and judgment, controls the left and right tail wing servo steering gears, and further controls the opening and closing of the left and right tail wing throttle valves; The control method of the automobile active aerodynamic kit control system is as follows: Car straight-line braking condition: When the car is in a straight-line braking condition, the ECU controller collects the vehicle condition signal for logical calculation and judgment, and controls the front wing throttle and the left and right rear wing throttles to be closed, providing additional air resistance and downforce for the car, so that the air resistance and downforce of the car are maximized, thereby shortening the braking distance; Car straight-line acceleration condition: When the car is in straight-line acceleration condition, the ECU controller collects the car condition signal for logical calculation and judgment, controls the front wing throttle and the left and right tail wing throttles to open, and the airflow quickly enters the left and right guide cavities of the tail wing body through the left and right guide grooves. The airflow flows through the spiral airway to release the downforce formed by the right and left tail wing bodies, so that the air resistance and downforce of the car are minimized when driving, and the airflow is accelerated to flow through the car body, thereby shortening the acceleration time and increasing the average speed of the car; High-speed cornering conditions: When the car turns left or right at high speed, the ECU controller collects vehicle condition signals for logical calculation and judgment, controls the front wing throttle to close, and the right and left tail wing throttle to open, so that the downforce on the inside of the car reaches the maximum while reducing the downforce on the outside of the car, thereby achieving a greater downforce on the inside of the car than on the outside wheels, and generating a self-aligning torque opposite to the roll torque, avoiding the car from skidding and improving the handling stability of the car when cornering at high speed; High-speed cornering-straight-line acceleration transition condition: When the car is in a high-speed cornering-straight-line acceleration condition, the ECU controller collects vehicle condition signals for logical calculation and judgment, and determines whether the front wing throttle and the rear wing throttle on one side are open, thereby reducing the air resistance and downforce of the car when driving, accelerating the airflow through the car body, and increasing the car's driving speed.

2. The control method of a vehicle active aerodynamic kit control system according to claim 1, characterized in that: The newly designed left and right guide grooves are approximately L-shaped, which enables the airflow to quickly enter the left and right guide cavities of the rear wing body through the L-shaped guide grooves, so that the airflow provides a certain downforce for the lower surface of the rear wing body.

Images