CN215971803U

CN215971803U - Automobile wind resistance coefficient reducing device

Info

Publication number: CN215971803U
Application number: CN202122286535.8U
Authority: CN
Inventors: 赵俊锋; 赵昊然
Original assignee: POLAROID; Polaroid Corp
Current assignee: POLAROID; Polaroid Corp
Priority date: 2021-09-22
Filing date: 2021-09-22
Publication date: 2022-03-08
Anticipated expiration: 2031-09-22

Abstract

The utility model provides a device for reducing the wind resistance coefficient of an automobile, which can reduce the wind resistance of the automobile in the driving process. The device comprises a bell mouth, a pipeline, an air jet, a booster pump, a front pressure sensor, a rear pressure sensor and a circuit; the bell mouth is arranged at the position of the front end of the automobile bearing the high pressure of the automobile in high-speed running, the air in the pressure area is collected to the bottom end of the bell mouth and is delivered to the air storage tank through the air delivery pipeline, after the air pressure is stabilized, the compressed air is respectively delivered to each air jet, and the negative pressure area of the tail of the automobile is filled; the air jet is arranged at the position where the tail part of the automobile bears the high negative pressure during the high-speed running of the automobile. The utility model effectively reduces the resistance of the automobile in driving and improves the economy of the automobile in driving.

Description

Automobile wind resistance coefficient reducing device

Technical Field

The utility model relates to the field of automobile aerodynamic appearance design, in particular to an automobile wind resistance coefficient reducing device.

Background

When the automobile runs, particularly when the speed per hour reaches more than 80Km/h, the air at the front end of the automobile presents a high-pressure area to prevent the automobile from running forwards. But the automobile is driven by the engine to overcome the front air resistance to run forwards. Meanwhile, a negative pressure area (vacuum area) is formed at the rear end (tail) of the automobile to prevent the automobile from driving forwards. Therefore, under the dual resistance acting forces of the front-end air positive pressure region and the tail negative pressure region in the running process of the automobile, the running resistance is very large, and the stability and the economy of the automobile are reduced.

Although the appearance of the current car is widely designed into a streamline shape, the car running resistance can be improved only, and the dilemma that the front end is positioned in a positive pressure area and the tail part is positioned in a negative pressure area during the running of the car cannot be fundamentally solved. In addition, the appearance of the car is designed to be streamline, and although the running resistance can be reduced, the running resistance can be reduced by correspondingly sacrificing part of the stability. After the appearance of the vehicle is designed to be in a streamline shape, the upper end surface (the roof) of the vehicle is longer than the arc line of the bottom of the vehicle, so that the air flow rate of the upper end surface of the car is larger than the air flow rate of the bottom of the vehicle in high-speed running, the air pressure at the upper end of the car is lower than the air pressure at the bottom of the vehicle according to the Bernoulli constant principle, the vehicle floats upwards under the action of atmospheric pressure, the principle of the air pressure is similar to the lifting force generated by the wings of an airplane, and the operation performance of the vehicle is reduced (the so-called fluttering phenomenon). Therefore, the reverse plate is arranged on the outer surface of the car of some high-speed cars, the principle of the reverse plate is opposite to the direction of the wings of the airplane, and downward force is generated in high-speed running so as to balance the lifting force generated in the running of the car.

SUMMERY OF THE UTILITY MODEL

The utility model provides a device for reducing the wind resistance coefficient of an automobile, which can reduce the wind resistance of the automobile in the driving process.

The technical problem to be solved by the utility model is realized by the following technical scheme:

the utility model provides a device for reducing the wind resistance coefficient of an automobile, which comprises a bell mouth, a pipeline, an air jet, a booster pump, a front pressure sensor, a rear pressure sensor and a circuit, wherein the front pressure sensor is connected with the rear pressure sensor; the bell mouth is arranged at the position of the front end of the automobile bearing the high pressure of the automobile in high-speed running, the air in the pressure area is collected to the bottom end of the bell mouth and is delivered to the air storage tank through the air delivery pipeline, after the air pressure is stabilized, the compressed air is respectively delivered to each air jet, and the negative pressure area of the tail of the automobile is filled; the air jet is arranged at the position where the tail part of the automobile bears the high negative pressure during the high-speed running of the automobile.

Preferably, the booster pump starts to work when the pressure difference value collected by the front pressure sensor and the rear pressure sensor exceeds a set value.

The utility model has the advantages of reducing the resistance of the automobile in running and improving the economy of the automobile in the running process.

Drawings

FIG. 1 is a schematic diagram of the device for reducing the wind resistance coefficient of the automobile.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.

Fig. 1 is a schematic diagram of the device for reducing the wind resistance coefficient of the automobile in the embodiment. The device realizes that a positive pressure area generated at the head (front end) of the automobile and a negative pressure area generated at the tail of the automobile are subjected to neutralization complementation during high-speed running of the automobile so as to reduce the running resistance of the automobile. The device comprises 1-5 horn mouths, pipelines, 5-10 air nozzles, a booster pump, front and rear pressure sensors, a circuit and the like.

The horn mouth is installed at the position where the front end of the automobile bears the high pressure of the automobile in high-speed running, the function is to collect the air in the pressure zone to the bottom end of the horn mouth and to the air storage tank through the air supply pipeline, so that after the air pressure tends to be stable, the compressed air is respectively conveyed to each air jet, and the negative pressure zone of the tail of the automobile is filled.

The air jet ports (5-10) are arranged at the tail of the automobile and bear the position of the automobile which is high in negative pressure during high-speed running, the specific installation position is determined according to the appearance of the automobile (car, passenger car and truck), and the air jet ports are used for supplementing air to the negative pressure formed during running.

The air storage tank is mainly used for stabilizing the pressure of the pressure air so as to stabilize the output air pressure.

The booster pump and the front and rear pressure sensors are used for collecting pressure difference values of the front and rear pressure sensors, and the pressure difference values start to work when the pressure difference values exceed a set value, so that the pressure difference values are used for increasing the compensation of pressure air. The working principle is as follows: the front and rear air pressure sensors are used for sensing front and rear air pressure (positive and negative) signals when the automobile runs at high speed, and form an AND gate circuit. When the front and rear pressure sensors reach the set values, the conduction condition of an AND gate circuit is met, the motor is electrified to operate, the booster pump is driven to pressurize air, the air enters the pipeline through the one-way valve, and the running resistance of the automobile is further reduced.

The device is characterized in that a horn mouth is additionally arranged at the front end of the existing automobile appearance, and an air jet is additionally arranged at the tail part of the existing automobile appearance. And the bell mouth and the air jet can also be used as the appearance decoration of the automobile, so that the appearance of the automobile is not influenced. The air storage tank and the pressurization system can be arranged at the bottom of the vehicle due to very small volume, and normal running of the vehicle is not affected. The volume of the gas storage tank is only about 1.5L, which is the same as that of the mineral water bottle, and the volume of the pressurizer is only fist.

When the automobile runs at high speed, the pressure formed by the front end windward on the automobile head is collected to the bottom end of the bell mouth through the bell mouth and is delivered to the gas storage tank through the gas delivery pipeline, and after the air pressure is stabilized, compressed gas is respectively delivered to each gas jet to fill a negative pressure area at the tail of the automobile. Thereby achieving the purpose of reducing the resistance of the automobile in high-speed running. When the pressure of the front end and the rear end of the automobile reaches a set value, the front sensor and the rear sensor output signals, and when the pressure difference of the front sensor and the rear sensor reaches a certain value, the pressurization system is controlled to work, so that the high-speed driving resistance is further reduced.

The principle of the device is similar to that of a solid pipe and a hollow pipe which have the same diameter, the solid pipe moves back and forth in water, the resistance of the solid pipe is large, and the resistance of the hollow pipe is relatively small.

Claims

1. The utility model provides a car drag coefficient device that falls which characterized in that: comprises a bell mouth, a pipeline, an air jet, a booster pump, a front pressure sensor, a rear pressure sensor and a circuit; the bell mouth is arranged at the position of the front end of the automobile bearing the high pressure of the automobile in high-speed running, the air in the pressure area is collected to the bottom end of the bell mouth and is delivered to the air storage tank through the air delivery pipeline, after the air pressure is stabilized, the compressed air is respectively delivered to each air jet, and the negative pressure area of the tail of the automobile is filled; the air jet is arranged at the position where the tail part of the automobile bears the high negative pressure during the high-speed running of the automobile.

2. The device for reducing the wind resistance coefficient of an automobile according to claim 1, wherein: and the booster pump starts to work when the pressure difference value acquired by the front pressure sensor and the rear pressure sensor exceeds a set value.