Engine air guide system, control method and air inlet system

Abstract

The invention discloses an engine air guide system, a control method and an air inlet system, and relates to the field of automobile air guide systems.The engine air guide system comprises an air guide plate body, an air inlet of the air guide plate body is provided with an adjusting air door, and the adjusting air door is connected with a rotary driving mechanism; when the rotary driving mechanism drives the adjusting air door to be adjusted to be in a vertical state, a first air inlet path is formed, one part of external air vertically flows to the heat exchanger, and the other part of the external air enters the air guiding pipe, the air filter and the engine through the air guiding system. When the rotary driving mechanism drives the adjusting air door to be adjusted to be in the horizontal state, a second air inlet path is formed, and air in the engine compartment sequentially enters the air guiding pipe, the air filter and the engine through the air guiding system. The air inlet path in non-cold weather and the air inlet path in extreme cold and snowy weather are both designed to the air deflector body, the air inlet path in the air inlet channel is changed by adjusting the air door, and the snow prevention and heat backflow prevention effects are both achieved.

Description

Technical Field

[0001] The present invention relates to the field of automobile air guide systems, and in particular to an engine air guide system, a control method and an air intake system. Background Art

[0002] The air deflector assembly is typically located in the front cabin of a vehicle, working in conjunction with the condenser, radiator, and front fender to form a relatively enclosed air intake duct. The air deflector system typically consists of three to four air deflectors or a single-piece design, forming a channel-like structure that is enclosed on all sides and ventilated at both ends. During vehicle operation, air flows through the opening in the front fender into the relatively enclosed air intake duct formed by the air deflectors and surrounding components. This airflow then splits into two paths: one portion passes vertically through the radiator and condenser, exchanging heat with them, while the other portion flows upward through the air duct to the air filter, cooling the engine. In real-world vehicle use, during heavy snowfall, snowflakes entrained in the air can be carried upward by the air from the front fender, passing through the air duct and into the air filter. This accumulation of snow can lead to ice clogging of the air filter.

[0003] The traditional approach to solving the above problem is to block the connection between the air deflector and the intake duct and open an air inlet on the air deflector away from the intake duct. Although this can effectively solve the problem of snowflakes entering the air filter, it will cause the hot air in the front cabin to enter the front of the radiator and condenser through the opening area on the air deflector, causing the air inlet temperature of the radiator and condenser to increase, affecting performance. Summary of the Invention

[0004] In view of the shortcomings of the existing technology, the purpose of the present invention is to provide an engine air guide system, a control method and an air intake system, in which the air intake path for non-cold weather and the air intake path for extremely cold blizzard weather are both designed on the air guide plate body, and the air intake path in the air intake channel is changed by adjusting the damper, so as to achieve the effect of both preventing snow and preventing heat backflow.

[0005] In order to achieve the above object, the present invention is implemented through the following technical solutions: In a first aspect, an embodiment of the present invention provides an engine air guide system, comprising an air guide body, an air inlet of the air guide body being provided with an adjusting damper, the adjusting damper being connected to a rotation drive mechanism; When the rotary drive mechanism drives the regulating damper to be adjusted to a vertical state, a first air intake path is formed, and part of the external air flows vertically to the heat exchanger, and the other part enters the air bleed duct, air filter and engine through the air guide system; when the rotary drive mechanism drives the regulating damper to be adjusted to a horizontal state, a second air intake path is formed, and the air in the engine compartment enters the air bleed duct, air filter and engine in sequence through the air guide system.

[0006] As a further implementation, the rotary drive mechanism includes a damper adjustment motor and a gear set, and the damper adjustment motor is connected to the damper through the gear set.

[0007] As a further implementation, the rotary drive mechanism is connected to a control system, which includes a temperature sensor and a controller. The temperature sensor is used to detect the external temperature, and the controller is used to adjust the damper position according to the external temperature.

[0008] As a further implementation, the air inlet includes a first inlet arranged toward one side of the air guide plate body and a second inlet on the lower side of the air guide plate body, and the regulating damper is used to switch the first inlet or the second inlet to be open.

[0009] As a further implementation method, the regulating damper is installed at the junction of the first inlet and the second inlet, and the shape of the regulating damper is adapted to the first inlet and the second inlet.

[0010] In a second aspect, an embodiment of the present invention further provides a method for controlling an engine air guide system, wherein the air guide system is in a non-cold weather mode or a blizzard weather mode; In the non-cold weather mode, the damper is rotated 90 degrees counterclockwise. The air enters the air duct and the air filter via the front grille. A portion of the air flows vertically toward the heat exchanger, and the remaining portion of the air flows through the air duct system into the air duct, the air filter, and the engine. In the blizzard weather mode, the air damper is adjusted to rotate 90° clockwise, and the path for air to enter the air duct and the engine is the closed space formed by the air guide system and the front cabin of the car. The air in the engine compartment enters the air duct, air filter and engine through the air guide system.

[0011] As a further implementation method, the outside temperature is monitored by a temperature sensor. When the outside temperature is lower than a set value, the controller controls the damper adjustment motor to switch the air inlet channel.

[0012] As a further implementation, each time the vehicle is restarted, the controller obtains the current state of the damper adjustment motor and restores the initial state; The initial state is set to adjust the damper position corresponding to the non-cold weather mode.

[0013] In a third aspect, an embodiment of the present invention further provides an engine air intake system equipped with the aforementioned air guide system.

[0014] As a further implementation method, it also includes a cooling module, an air duct and an air filter. The air guide system is fixedly connected to the cooling module, one end of the air duct is connected to one side of the cooling module, and the other end of the air duct is connected to the air filter.

[0015] The beneficial effects of the present invention are as follows: (1) The air inlet of the air guide body of the present invention is equipped with an adjusting damper, which is connected to a rotary drive mechanism. The rotary drive mechanism drives the adjusting damper to be in a vertical state or a horizontal state, forming different air inlet paths to adapt to different working modes, so that the air guide system has the functions of preventing snow and preventing heat backflow at the same time.

[0016] (2) The air inlet of the air deflector body of the present invention has a first inlet and a second inlet, and the planes where the first inlet and the second inlet are located are perpendicular to each other, that is, the air inlet path for non-cold weather and the air inlet path for extremely cold and snowy weather are designed on the air deflector body. By adjusting the damper to switch the first inlet or the second inlet to open, the number of air deflectors can be effectively reduced, thereby reducing costs.

[0017] (3) The present invention monitors the outside temperature through a temperature sensor and changes the state of the regulating damper based on the temperature signal. In non-cold weather mode, the regulating damper rotates counterclockwise 90° to form a first air intake path. The path for air to enter the air duct and the air filter is that the air outside the car enters the air guide system area through the front grille. Part of the air flow flows vertically to the heat exchanger, and the other part of the air enters the air duct, the air filter and the engine through the air guide system; in blizzard weather mode, the regulating damper rotates clockwise 90° to form a second air intake path. The path for air to enter the air duct and the engine is the closed space formed by the air guide system and the front cabin of the car. The air in the engine compartment enters the air duct and the air filter to the engine through the air guide system. Part of the air entering the engine is the original air in the engine compartment, and part of it is the air that has been heated by heat exchangers such as condensers and radiators when the car is driving normally. The air containing snowflakes melts after being heated by the heat exchangers and will not cause freezing and blockage of the air filter and the engine. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0019] Figure 1 is a schematic diagram of an installation of an air guide system according to one or more embodiments of the present invention; Figure 2 is a schematic diagram of an air intake path of an air guide system in a non-cold weather mode according to one or more embodiments of the present invention; Figure 3 is a schematic diagram of an air inlet path of an air guide system in a blizzard weather mode according to one or more embodiments of the present invention; Figure 4 is a schematic diagram of the control system structure according to one or more embodiments of the present invention; Figure 5 is a schematic structural diagram of an air guide system according to one or more embodiments of the present invention; Figure 6 yes Figure 5 A partial enlarged view of point A.

[0020] Among them, 1. air guide system; 11. air guide plate body; 111. first inlet; 112. second inlet; 12. damper adjustment motor; 13. gear set input shaft; 14. gear set output shaft; 15. damper adjustment; 2. Cooling module; 3. Air bleed pipe; 4. Air filter; 5. Control system; 51. Controller, 52. Sensor wiring harness, 53. Temperature sensor, 54. Motor wiring harness. DETAILED DESCRIPTION

[0021] It should be noted that the following detailed description is illustrative and is intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used in the present invention have the same meaning as commonly understood by those skilled in the art to which the present invention belongs.

[0022] Example 1: When the car is driving in non-cold weather, the front cabin engine and heat exchange equipment such as the condenser and radiator need to exchange heat with the low-temperature air entering from the outside through the grille to achieve functions such as lowering the engine temperature and air conditioning cooling. This requires the wind deflector to have good sealing properties; in heavy snow weather, when the car is driving, snowflakes will enter the air filter 4 through the relatively closed air inlet channel formed by the wind deflector and surrounding parts, causing the air filter 4 to be frozen and blocked.

[0023] In order to solve the problem of snow prevention, the traditional wind deflector will stagger the wind deflector and the air inlet of the air filter 4, so that snowflakes cannot enter the air filter 4 through the air inlet of the wind deflector. However, this method has a serious heat backflow problem. In hot weather, the hot air in the front cabin will enter the grille area through the air inlet moved away for snow prevention, causing the air inlet temperature of the condenser and radiator to increase, affecting the heat exchange performance, and thus causing a decrease in cabin comfort.

[0024] Based on this, this embodiment provides an engine air guide system, such as Figure 5 and Figure 6As shown, it includes an air deflector body 11, and the air deflector body 11 is provided with two air inlets. According to the viewing direction, the air inlet provided on the front side of the air deflector body 11 is the first inlet 111, and the air inlet provided at the bottom of the guide plate body is the second inlet 112. The first inlet 111 and the second inlet 112 are located at a plane perpendicular to each other; an adjusting damper 15 is installed at the junction of the first inlet 111 and the second inlet 112, and the adjusting damper 15 is rotated counterclockwise or clockwise to open the first inlet 111 or the second inlet 112, thereby forming different air inlet paths.

[0025] In this embodiment, the first inlet 111 and the second inlet 112 are rectangular openings, which are connected to the interior of the air guide plate body 11; the shape of the regulating damper 15 is adapted to the first inlet 111 and the second inlet 112, that is, it is a rectangular plate structure, and the regulating damper 15 is connected to the rotating drive mechanism, and the regulating damper 15 rotates under the action of the rotating drive mechanism.

[0026] like Figure 6 As shown, the rotary drive mechanism of this embodiment includes a damper adjusting motor 12 and a gear set, the damper adjusting motor 12 is connected to the gear set input shaft 13, and the gear set output shaft 14 is connected to the damper adjusting 15; the connection end of the damper adjusting 15 and the gear set output shaft 14 is a rotating end, and the other end is a free end, the damper adjusting motor 12 drives the gear set to rotate, so that the free end of the damper adjusting 15 rotates relative to the rotating end; when the damper adjusting 15 rotates 90° counterclockwise, the first inlet 111 is blocked and the second inlet 112 is open, and when the damper adjusting 15 rotates 90° clockwise, the first inlet 111 is open and the second inlet 112 is blocked.

[0027] In non-cold weather mode, the car needs to be able to quickly cool the engine, such as Figure 2 As shown, the damper 15 is driven by the damper adjustment motor 12 to rotate counterclockwise by 90° to form a first air intake path. At this time, the path for air to enter the air duct 3 and the air filter 4 is that the external air enters the air guide system 1 area through the front grille, part of the air flow flows vertically to the heat exchanger, and the other part of the air enters the air duct 3, the air filter 4 and the engine through the air guide system 1.

[0028] In blizzard weather mode, if Figure 3As shown, to prevent snow from entering the engine through the front grille, air guide system 1, air duct 3, and air filter 4, causing abnormal engine air intake, damper 15, driven by damper adjustment motor 12, rotates 90° clockwise, opening first inlet 111 and forming a second air intake path. Air now enters air duct 3 and the engine through the enclosed space formed by air guide system 1 and the vehicle's front compartment. Air from the engine compartment is directed through air guide system 1 into air duct 3, air filter 4, and then into the engine. This path of air entering the engine consists partly of existing air from the engine compartment and partly of air heated by heat exchangers such as the condenser and radiator during normal vehicle operation. Any air containing snow entering air guide system 1 has melted after being heated by the heat exchanger, preventing freezing or blockage of the air filter or engine.

[0029] The rotary drive mechanism is connected to the control system 5 and adjusts the damper 15 to switch the state according to the external temperature. Figure 4 As shown, the control system 5 of this embodiment includes a temperature sensor 53 and a controller 51. The temperature sensor 53 is connected to the controller 51 through a sensor harness 52. The controller 51 is connected to the damper adjustment motor 12 through a motor harness 54. The damper adjustment motor 12 serves as an execution end and works through the input signal of the controller 51.

[0030] Initially, the damper 15 is in a vertical position, meaning the first inlet 111 is closed. When the temperature sensor 53 detects that the ambient temperature is below a set value (e.g., 0°C), the controller 51 sends a signal to the damper motor 12. The damper motor 12 then transmits rotational motion through the gear train input shaft 13. The gear train output shaft 14 reduces the speed of the damper motor 12 and causes the damper 15, connected to the gear train output shaft 14, to rotate 90° clockwise, opening the first inlet 111 and closing the second inlet 112, switching to snow weather mode. When the temperature sensor detects that the ambient temperature is above the set value, the damper motor 12 controls the damper 15 to rotate 90° counterclockwise.

[0031] It is understood that in other embodiments, the control system 5 may also include two controllers, one of which is located on the left side of the air deflector body 11, namely the left controller, and the other is located on the right side of the air deflector body 11, namely the right controller. The right controller is connected to the temperature sensor 53 via a wiring harness, and the left controller is connected to the damper adjustment motor 12 via a wiring harness. When the temperature input into the right controller by the temperature sensor 53 is lower than the set value, the right controller sends the request to adjust the damper adjustment motor 12 to the left controller, and the left controller transmits the signal to the actuator damper adjustment motor 12, thereby changing the air intake path by controlling the damper adjustment motor 12. The two controllers cooperate with each other to form a simple redundant system. If one of the controllers fails, the other controller can serve as a backup, thereby reducing the impact of a single controller failure on the entire system.

[0032] The air guide system 1 of this embodiment designs the air inlet path for non-cold weather and the air inlet path for extremely cold blizzard weather onto the air guide plate body 11. By adjusting the damper 15, the air inlet path in the air inlet channel is changed to achieve both snow protection and heat backflow protection effects, which can effectively reduce the development volume of the air guide plate assembly and control development costs.

[0033] Example 2: This embodiment provides a control method for an engine air guide system, based on the air guide system 1 described in Example 1. The air guide system 1 has a non-cold weather mode and a blizzard weather mode, and can switch between the two modes.

[0034] Each time the vehicle is restarted, the controller 51 obtains the current state of the damper adjustment motor 12 and automatically restores the initial state. The initial state is set to the position of the damper 15 corresponding to the non-cold weather mode, that is, the damper 15 is in a vertical state, the first inlet 111 is closed, and the second inlet 112 is open.

[0035] The temperature sensor 53 detects the outside temperature in real time. When the outside temperature is lower than the set value, the controller 51 sends a signal to the damper adjustment motor 12 to keep the damper 15 in a vertical state, that is, in non-cold weather mode. The path for air to enter the air duct 3 and the air filter 4 is that the air outside the car enters the air guide system 1 area through the front grille. Part of the air flow flows vertically to the heat exchanger, and the other part of the air enters the air duct 3, the air filter 4 and the engine through the air guide system 1.

[0036] When the outside temperature rises above the set point, damper motor 12 rotates damper 15 90° clockwise, switching to blizzard weather mode. The path for air to enter duct 3 and the engine changes to the enclosed space formed by air guide system 1 and the vehicle's front cabin. Air from the engine compartment is drawn through air guide system 1 into duct 3, air filter 4, and then to the engine. This path includes both pre-existing air from the engine compartment and air that has been heated by heat exchangers like the condenser and radiator during normal vehicle operation.

[0037] This embodiment realizes the function of automatically switching the air intake path according to the change of the external temperature through the coordinated work of the temperature sensor 53, the controller 51, the damper adjustment motor 1215 and the damper adjustment, so that the vehicle can maintain a good operating state under different climatic conditions and enhance the adaptability and reliability of the vehicle.

[0038] Example 3: This embodiment provides an engine air intake system, which is equipped with the air guide system 1 described in Example 1. Figure 1 As shown, it also includes a cooling module 2, an air duct 3 and an air filter 4. The air guide system 1 is fixedly connected to the cooling module 2, one end of the air duct 3 is connected to one side of the cooling module 2, and the other end of the air duct 3 is connected to the air filter 4. When the car is driving or the cooling module 2 and the engine are running, negative pressure is formed, so that the air flows relative to the car to achieve air heat conversion.

[0039] The above description is merely a preferred embodiment of the present application and is not intended to limit the present application. Various modifications and variations are possible for those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present application shall be included within the scope of protection of the present application.

Claims

1. An engine air guide system, characterized in that: It includes an air deflector body, an air inlet of the air deflector body is equipped with an adjusting damper, and the adjusting damper is connected to a rotation drive mechanism; When the rotary drive mechanism drives the regulating damper to be adjusted to a vertical state, a first air intake path is formed, and part of the external air flows vertically to the heat exchanger, and the other part enters the air bleed duct, air filter and engine through the air guide system; when the rotary drive mechanism drives the regulating damper to be adjusted to a horizontal state, a second air intake path is formed, and the air in the engine compartment enters the air bleed duct, air filter and engine in sequence through the air guide system.

2. The engine air guide system according to claim 1, characterized in that: The rotary drive mechanism includes a damper adjustment motor and a gear set, and the damper adjustment motor is connected to the damper through the gear set.

3. The engine air guide system according to claim 2, characterized in that: The rotary drive mechanism is connected to a control system, which includes a temperature sensor and a controller. The temperature sensor is used to detect the external temperature, and the controller is used to adjust the damper position according to the external temperature.

4. The engine air guide system according to claim 1, characterized in that: The air inlet includes a first inlet arranged toward one side of the air guide plate body and a second inlet on the lower side of the air guide plate body, and the regulating damper is used to switch the first inlet or the second inlet to be open.

5. The engine air guide system according to claim 4, characterized in that: The regulating damper is installed at the junction of the first inlet and the second inlet, and the shape of the regulating damper is adapted to the first inlet and the second inlet.

6. A method for controlling an engine air guide system according to any one of claims 1 to 5, characterized in that: The wind guide system is in a non-cold weather mode or a blizzard weather mode; In the non-cold weather mode, the damper is rotated 90 degrees counterclockwise. The air enters the air duct and the air filter via the front grille. A portion of the air flows vertically toward the heat exchanger, and the remaining portion of the air flows through the air duct system into the air duct, the air filter, and the engine. In the blizzard weather mode, the air damper is adjusted to rotate 90° clockwise, and the path for air to enter the air duct and the engine is the closed space formed by the air guide system and the front cabin of the car. The air in the engine compartment enters the air duct, air filter and engine through the air guide system.

7. The control method of an engine air guide system according to claim 6, characterized in that: The outside temperature is monitored by the temperature sensor. When the outside temperature is lower than the set value, the controller controls the damper adjustment motor to switch the air inlet channel.

8. The method for controlling an engine air guide system according to claim 6, characterized in that: Every time the vehicle is restarted, the controller obtains the current state of the throttle adjustment motor and restores it to its initial state; The initial state is set to adjust the damper position corresponding to the non-cold weather mode.

9. An engine air intake system, characterized in that: An air guide system as described in any one of claims 1 to 5 is installed.

10. An engine air intake system according to claim 9, characterized in that: It also includes a cooling module, an air duct and an air filter. The air guide system is fixedly connected to the cooling module. One end of the air duct is connected to one side of the cooling module, and the other end of the air duct is connected to the air filter.

Images