KR102214494B1 - Device for decreasing air resistance for automobile - Google Patents

Abstract

The present invention relates to an air resistance reducing apparatus for a vehicle, comprising: an inlet formed through an upper surface of a trunk lid so as to improve driving fuel economy by air resistance generated according to the driving of the vehicle; And an exhaust port formed through the rear surface of the trunk lid.

Description

Automotive air resistance reduction device{DEVICE FOR DECREASING AIR RESISTANCE FOR AUTOMOBILE}

The present invention relates to a device for reducing air resistance for a vehicle, and more particularly, to a device for reducing air resistance for a vehicle capable of improving fuel economy by reducing air resistance generated when a vehicle runs at high speed.

In general, the air resistance a vehicle receives is proportional to the square of the speed at which the vehicle is traveling. When the vehicle runs at high speed, the pressure in the front of the vehicle becomes higher than the pressure in the rear, and this phenomenon generates a force that pulls the vehicle to the rear, which is referred to as air resistance.

When designing a vehicle body in a way to reduce air resistance, efforts to improve fuel economy by designing in a streamlined shape have been continuing. However, in a design that prioritizes only the purpose of improving fuel economy, the streamlined body is a result obtained at the expense of the internal space utilization of the body or at the expense of other profits.

When a car is running, an air spoiler is a technology that actively controls the air flowing around the car body. This changes the flow of air to generate a downward force, and this force pushes the vehicle body down, thereby sinking the vehicle body to the ground during high-speed driving, thereby enhancing the driving stability of the vehicle.

However, it is difficult to find an active control technology to reduce air resistance.

Republic of Korea Patent Publication No. 1998-0059525 (1998.10.07)

Accordingly, the present invention has been conceived to solve the above problems, and an object of the present invention is an inlet through which air can pass through the upper surface of the trunk lid and the rear surface intersecting the upper surface. By forming an exhaust port, the air flowing around the vehicle body is introduced into the inlet during driving and discharged through the exhaust port, thereby supplying air more smoothly to the rear of the car, reducing the air resistance of the car while driving, improving fuel efficiency of the car. It is to provide a vehicle air resistance reduction device that can be promoted.

In order to achieve the above object, the present invention includes an inlet formed through an upper surface of a trunk lid; And an exhaust port formed through the rear surface intersecting the upper surface of the trunk lid.

According to an embodiment of the present invention, it includes a connection type tube installed between the inlet and the outlet.

According to an embodiment of the present invention, the vehicle is divided into a passenger boarding space and a trunk space, and an air passage is formed that allows air flow from the passenger boarding space to the trunk space and blocks the flow in the opposite direction of the air. do.

According to an embodiment of the present invention, the inlet and the outlet are provided with covers that can be opened and closed.

According to an embodiment of the present invention, the cover is formed detachably to the inlet and the outlet.

According to an embodiment of the present invention, the cover is formed to open and close the inlet and the outlet by operating within the trunk lid according to the operation of the switch.

According to an embodiment of the present invention, the cover is set so that operation control is stored as input data in the electronic control device to automatically open and close under a corresponding condition.

According to an embodiment of the present invention, the air flow through the air passage from the passenger boarding space to the trunk space is a speed at which the vehicle travels as a first input value, and external air flows into the passenger boarding space. As the second input value, whether or not the situation is in a situation where the air flow is controlled from the passenger boarding space to the trunk space according to the first input value and the second input value.

According to an embodiment of the present invention, an air guide is formed outside the inlet so that air is guided and introduced into the inlet while the vehicle is running.

According to the apparatus for reducing air resistance for a vehicle according to the present invention having the configuration as described above, the air flowing around the vehicle body during driving of the vehicle is introduced into the inlet formed on the upper surface of the trunk lid, and the outlet formed on the rear surface of the trunk lid is By passing through, there is an effect of increasing fuel economy by reducing air resistance during driving by increasing the pressure at the rear of the vehicle.

1 is a perspective view showing a vehicle equipped with an air resistance reduction device according to the present invention.
2 is a view showing the installation state of the air resistance reduction device for a vehicle according to the present invention.
3A and 3B are views showing a coupling state of a connection type tube to a trunk lid according to the present invention.
4A and 4B are views showing a cover installed on a trunk lid according to the present invention.
4C is a block diagram showing the overall configuration of an apparatus for controlling opening and closing of a cover according to the present invention.
5 is a view showing the installation state of the air guide of the air resistance reduction device for a vehicle according to the present invention.
6 is a view showing an air passage for preventing backflow according to the present invention.
7 is a diagram illustrating a pressure distribution around a vehicle when a general vehicle is driven.
8 is a graph showing the results of a comparison test of the pressure around the vehicle when the inlet and the outlet of the vehicle air resistance reduction device according to the present invention are connected by a connection type tube and the inlet and the outlet are blocked.

The present invention will be described in detail in the text, since various modifications can be made and various forms can be obtained. However, this is not intended to limit the present invention to a specific form of disclosure, it should be understood to include all changes, equivalents, and substitutes included in the spirit and scope of the present invention. In describing each drawing, similar reference numerals have been used for similar elements.

These terms are used only for the purpose of distinguishing one component from another component. The terms used in the present application are only used to describe specific embodiments, and are not intended to limit the present invention. Singular expressions include plural expressions unless the context clearly indicates otherwise.

Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 is a perspective view showing a vehicle equipped with an air resistance reducing device according to the present invention, Figure 2 is a view showing the installation state of the air resistance reducing device for a vehicle according to the present invention, Figures 3a and 3b are 4A and 4B are views illustrating a cover installed on the trunk lid according to the present invention. In addition, Figure 4c is a block diagram showing the overall configuration of the apparatus for controlling the opening and closing drive of the cover according to the present invention, Figure 5 is a view showing the installation state of the air guide of the air resistance reduction device for a vehicle according to the present invention.

The trunk lid 100 of a vehicle is a cover that opens and closes the trunk room, which is a space for loading luggage at the rear of the vehicle, and is used as a device for absorbing shock energy in the event of a rear collision, and the rear fender of the vehicle and It is installed in various means of transportation such as sedans supported by rear bumpers.

In an embodiment according to the present invention, an air resistance reduction device 10 capable of improving fuel economy by reducing air resistance by increasing the pressure at the rear of the vehicle during high-speed driving is mounted on the trunk lid 100.

As shown in Figures 1 and 2, the air resistance reduction device 10 for a vehicle according to the present invention, the air introduced through the inlet 11 formed in the upper surface 110 of the trunk lid 100 goes straight By being discharged through the discharge port 12 formed through the rear surface 111 of the vehicle body so as to be discharged in the direction opposite to the driving direction of the driving vehicle, it is possible to reduce air resistance during driving of the vehicle.

The upper surface 110 of the trunk lid 100 connected to and connected to the rear windshield of the vehicle is parallel to the ground or extends rearward with an inclination, and the rear surface 111 intersecting approximately vertically with the upper surface 110 Tail lamps may be provided on both sides, and a license plate may be provided in the center.

An inlet 11 and an outlet 12 through which air can pass are respectively formed on an upper surface 110 of the trunk lid 100 and a rear surface 111 intersecting the upper surface 110.

A circular cross-section connected tube 13 connected in a straight line between the inlet 11 and the outlet 12 so that air flowing to the rear of the vehicle during high-speed driving is introduced into the inlet 11 and stably discharged through the outlet 12 Can be installed.

The connecting tube 13 may be made of a flexible material having elasticity in order to prevent noise caused by vibration during driving of the vehicle.

On the other hand, such a vehicle air resistance reduction device 10 is important to remove the connection type tube 13 temporarily to avoid interference with the luggage when it is necessary to put a large load in the trunk. (13) can be made detachable from the trunk lid 100.

To this end, as shown in Figs. 3A and 3B, the connection type tube 13 is detachable from the inlet 11 and the outlet 12 formed in the trunk lid 100 through a coupling method such as screwing or mechanical assembly. can do.

This can perform the role of absorbing impact energy in the event of a rear collision accident without deteriorating performance.

The connected tube 13 is formed in a number and size that is sufficient to allow the air introduced through the inlet 11 to be sufficiently discharged to the outside, and it may be appropriately selected.

The inlet 11 and the outlet 12 are not always open, but open only when necessary, and a removable cover 14 is provided so that air is introduced and discharged.

4A and 4B, the cover 14, like the connection-type tube 13, has an inlet 11 and an outlet formed in the trunk lid 100 through a coupling method such as screw fastening and mechanical assembly. 12) is formed to be detachable.

On the other hand, Figure 4c is a block diagram showing the overall configuration of the apparatus for controlling the opening and closing drive of the cover according to the present invention, the cover 14 operates within the trunk lid 100 according to the operation of the switch 120 It may be formed to open and close the inlet 11 and the outlet 12 formed in (100).

In this way, the cover 14 operated by the operation of the switch 120 is operated by electricity supplied from the battery of the vehicle, so that the inlet 11 and the outlet 12 can be opened and closed.

Accordingly, the cover 14 opens the inlet 11 and the outlet 12 when the vehicle runs at a certain speed or more, and closes the inlet 11 and the outlet 12 when the vehicle runs at a certain speed or less. As an operation of closing, operation control is stored as input data in the electronic control device 130 such as an ECU of a vehicle, and may be set to open and close automatically by the motors M and 140 under corresponding conditions.

The air resistance reduction device 10 for a vehicle configured as described above is supplied with air passing through the hood and the roof during the driving of the vehicle to the trunk lid 100, and at least one formed on the upper surface 110 of the trunk lid 100 It flows into the inlet (11).

The air introduced through the inlet 11 is discharged to the outside through the outlet 12 through the connection tube 13, and thereby, air is smoothly supplied to a place where the pressure at the rear of the vehicle is low, thereby increasing the pressure. .

A four-half spherical air guide 15 may be formed outside the inlet 11 of the trunk lid 100 so that more air is guided and introduced into the inlet 11 while the vehicle is running.

As shown in FIG. 5, the quarter-spherical air guide 15 may have a cover shape disposed to face the air flowing to the rear so that the air flowing to the rear of the vehicle can be guided to the inlet 11.

In the embodiment of the present invention, the shape of the air guide 15 is limited to a cover shape, but any shape guiding air into the inlet 11 can be adopted.

On the other hand, it is preferable that the vehicle has a design capable of blocking substances harmful to the human body such as automobile exhaust gas from entering the passenger boarding space. In the case of a vehicle using fossil fuels, there is generally a passenger space between the engine room in the front and the trunk space in the rear. When the passenger boarding space is completely enclosed, the concentration of harmful substances such as carbon dioxide increases, so fresh air must be received from the outside to prevent this, and an air inlet is required to facilitate air inflow. The air outlet through which the air introduced into the passenger boarding space escapes may be connected to the trunk space, or may be installed in the passenger boarding space regardless of the trunk space. When the air inlet is connected to the trunk space, air flowing from the trunk space to the passenger boarding space should be blocked, and the air flowing from the passenger boarding space to the trunk space should not be blocked. This is because if the air flowing from the trunk space to the passenger boarding space is not blocked, exhaust gas from the vehicle is introduced into the trunk due to eddy currents generated at the rear of the vehicle, and harmful gas introduced into the trunk may enter the passenger boarding space. In the vehicle's outside air circulation mode, the air introduced into the passenger boarding space passes through the air passage 20 connected from the passenger boarding space to the trunk space, and through the exhaust port 12 formed on the rear surface 111 of the trunk lid 100. Together with the air remaining in the space, it can be discharged to the outside. Accordingly, air is smoothly supplied to the rear of the vehicle, thereby increasing the air pressure at the rear of the vehicle, thereby helping to improve fuel economy. In addition, it is possible to block the inflow of exhaust gas into the room.

In addition, the speed at which the vehicle is traveling is set as a first input value, and whether fresh outside air is introduced into the passenger boarding space is set as a second input value, and automatically according to the first input value and the second input value. It is possible to control the air flow from the passenger boarding space to the trunk space. For example, when the driving speed of the vehicle is 100 km/h and the air circulation mode of the vehicle is the outside air mode, air flow is allowed from the passenger boarding space to the trunk space through the air inlet, and the outlet 12 on the rear surface of the trunk space By opening the door to exhaust air, the air pressure at the rear of the car can be increased, which can help improve fuel economy. At this time, the inlet 11 formed through the upper surface 110 of the trunk lid 100 may be opened or closed. For another example, when the driving speed of the vehicle is 100 km/h and the air circulation mode of the vehicle is the betting mode, air flow between the passenger boarding space and the trunk space through the air inlet is blocked, and the inlet of the trunk space 11 ) And opening the outlet 12 at the same time can increase the air pressure at the rear of the vehicle, thereby helping to improve fuel economy. Here, the driving speed of the vehicle is limited to 100 km/h, but is not necessarily limited thereto, and any specific high-speed driving speed may be adopted.

As shown in FIG. 6, as an example of the air passage 20 for preventing backflow through which air can flow in only one direction, a structure such as a valve of a heart may be considered. The valve is a structure to prevent reflux in which the membrane closes by itself due to the phenomenon of reflux when blood flows back.

A part of the air passage 20 may be made of a magnetic material 21. The valve 23 capable of opening and closing the air passage 20 may be attached to the air passage 20 in a structure capable of being rotated by a hinge 22. The valve 23 may be made of a flexible material such as rubber, and a portion of the valve 23 may have magnetic properties so that the magnetic material 21 and a force attracting each other act to close the air passage 20. have. FIG. 6A is a case where the air passage 20 is closed due to backflow air, and FIG. 6B is a case where the air passage 20 is opened due to a forward air flow.

In addition, in the case of the load space for loading the luggage of the pickup truck with no trunk lid and the entire upper surface is open, only an exhaust port is formed on the rear surface so that the air flowing around the vehicle body passes through the exhaust port when driving, thereby increasing the pressure at the rear of the pickup truck. Since it reduces the air resistance of the car while driving, it is possible to improve the fuel economy of the pickup truck.

On the other hand, FIG. 7 is a diagram showing the pressure distribution around the vehicle when the sedan is traveling at a constant speed, in which red indicates a high pressure and blue indicates a low pressure. In this case, the darker the color, the more severe it means.

Figure 8 shows the pressure around the vehicle obtained when the inlet 11 and the outlet 12 of the trunk lid 100 according to the present invention are connected by a connecting tube 13 (the line indicated by'A' in the graph). This is a result of a comparison test with the case where the inlet 11 and the outlet 12 of the trunk lid 100 are blocked (the line indicated by'B' in the graph).

Here, the vertical axis of the graph represents the pressure, and the horizontal axis represents the point of the vehicle, with the left side of the horizontal axis toward the front of the vehicle and the right side of the horizontal axis toward the rear of the vehicle. Looking at the test results, it can be seen that there is no change in the pressure at the front of the vehicle and the pressure at the rear of the vehicle increases in the case of A. The line labeled A is a case where the inlet 11 and the outlet 12 of the trunk lid 100 are connected by a connecting tube, and the line labeled B is a case where there is no device.

Accordingly, in the present invention, when the vehicle is running, the air flowing around the vehicle body is introduced into the inlet 11 of the trunk lid 100 and discharged through the outlet 12, so that air is smoothly supplied to the rear of the vehicle. By increasing the air pressure, it is possible to improve the fuel efficiency of the vehicle. In addition, it is possible to block the inflow of exhaust gas into the room.

The above description of the present invention is for illustrative purposes only, and those of ordinary skill in the art to which the present invention pertains can understand that it is possible to easily transform it into other specific forms without changing the technical spirit or essential features of the present invention. will be. Therefore, it should be understood that the embodiments described above are illustrative in all respects and not limiting. The scope of the present invention is indicated by the claims to be described later, and all changes or modified forms derived from the meaning and scope of the claims and their equivalent concepts should be interpreted as being included in the scope of the present invention.

100: trunk lid 110: upper surface
111: rear surface 120: switch
130: electronic control device 140: motor
10: air resistance reduction device 11: inlet
12: outlet 13: connection type tube
14: cover 15: air guide
20: air passage 21: magnetic material
22: hinge 23: valve

Claims (12)

An inlet formed through the upper surface of the trunk lid so that air flowing around the vehicle body of a traveling vehicle is introduced into the trunk; And
It includes an outlet formed through the rear surface of the vehicle body to discharge the air introduced through the inlet,
The outlet is formed so that the direction of the discharged air is opposite to the driving direction of the car traveling straight,
Air resistance reduction device for a vehicle, characterized in that it comprises a connection type tube of a circular cross section that is formed detachably between the inlet and the outlet in the trunk and connected in a straight line.
delete The method of claim 1,
The vehicle includes a passenger boarding space and a trunk space,
Air resistance reduction device for a vehicle, characterized in that the air passage is formed to allow air flow from the passenger boarding space to the trunk space and to block the flow in the opposite direction of the air.
The method of claim 1,
The air resistance reduction device for a vehicle, characterized in that the inlet and the outlet is provided with an openable cover.
The method of claim 4,
The cover is a vehicle air resistance reduction device, characterized in that formed to be detachable from the inlet and the outlet.
The method of claim 4,
The cover is formed to open and close the inlet and the outlet by operating within the trunk lid according to the operation of the switch.
The method of claim 6,
The cover is an air resistance reduction device for a vehicle, characterized in that the operation control is stored as input data in the electronic control device to be automatically opened and closed under a corresponding condition.
The method of claim 3,
Air flow through the air passage from the passenger boarding space to the trunk space,
The speed at which the vehicle is traveling is set as a first input value, and whether external air is introduced into the passenger boarding space is set as a second input value, and the passenger according to the first input value and the second input value Air resistance reduction device for a vehicle, characterized in that the air flow from the boarding space to the trunk space is controlled.
The method of claim 1,
An air resistance reduction device for a vehicle, characterized in that an air guide is formed outside the inlet so that air is guided and introduced into the inlet during driving of the vehicle.


The method of claim 3,
The air passage is a vehicle air resistance reduction device, characterized in that made of a valve structure for preventing backflow.
The method of claim 8,
When the driving speed of the vehicle corresponds to the adopted speed as the first input value and the air circulation mode of the vehicle is the outside air mode as the second input value, air flows from the passenger boarding space to the trunk space through the air inlet Air resistance reduction device for a vehicle, characterized in that the air flow of increasing the air pressure at the rear of the vehicle is controlled by allowing the air to be discharged by opening the outlet of the rear surface of the trunk space.
The method of claim 9,
The air guide is a vehicle air resistance reduction device, characterized in that formed in a four-half sphere.

Images