CN113443025B - Car wheel chamber water conservancy diversion structure and car - Google Patents
Car wheel chamber water conservancy diversion structure and car Download PDFInfo
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- CN113443025B CN113443025B CN202010213667.5A CN202010213667A CN113443025B CN 113443025 B CN113443025 B CN 113443025B CN 202010213667 A CN202010213667 A CN 202010213667A CN 113443025 B CN113443025 B CN 113443025B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D35/00—Vehicle bodies characterised by streamlining
- B62D35/008—Side spoilers
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
- Y02T10/82—Elements for improving aerodynamics
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- Combustion & Propulsion (AREA)
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- Body Structure For Vehicles (AREA)
- Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
Abstract
The invention belongs to the technical field of automobile parts, and particularly relates to an automobile wheel cavity flow guide structure and an automobile. The flow guide piece of the automobile wheel cavity flow guide structure comprises a plurality of flow guide pieces which are enclosed into an arc shape matched with a wheel cavity of an automobile; the plurality of flow deflectors are connected with the driver; the guide vane moves towards the wheel center of the wheel along the guide piece under the driving of the driver; when a diversion instruction is received, the control driver drives the plurality of diversion sheets to move along the guide piece and spread at the opening position of the wheel cavity of the wheel; when receiving a retraction command, the control driver drives the plurality of guide vanes to move along the guide piece and retract to the body of the automobile. According to the invention, when the guide vane moves along the guide piece and is in a spreading state, the gap between the wheel and the vehicle body can be reduced, so that the air flow entering the wheel cavity of the vehicle through the gap is reduced, the energy consumption of air flow turbulence in the wheel cavity is reduced, the wind resistance of the vehicle is reduced, and the fuel economy of the vehicle is improved.
Description
Technical Field
The invention belongs to the technical field of automobile parts, and particularly relates to an automobile wheel cavity flow guide structure and an automobile.
Background
In the process of driving the automobile, aerodynamic efficiency loss exists, and the air resistance of the automobile is in direct proportion to the square of the speed, so that when the automobile runs at a high speed, the reduction of the air resistance of the automobile has important significance for improving the fuel economy of the automobile. However, at the opening position (i.e. the wheel cavity position) of the vehicle body for the wheel to rotate, the phenomena of separation, agitation and backflow of the airflow, which increase the air resistance of the vehicle and aerodynamic noise of the airflow passing through the wheel area, are inevitably generated during the traveling of the vehicle, and at the same time, the opening position is also easy to cause dust pollution on the side of the vehicle body. Therefore, approaching an ideal flow field is an important task for automotive aerodynamic design.
In the prior art, the following automobile diversion methods are generally used for controlling the air flow at the wheel cavity position: the first mode is to arrange an air dam with a certain height in front of the wheels, but the method can only reduce the airflow entering the wheel cavity in front of the wheels and can not reduce the airflow entering the wheel cavity from the two sides of the wheels, so the pneumatic resistance reducing effect of the whole vehicle is poor; the second mode is to install the wheel casing additional in the outside of wheel, hides the wheel and isolates the inside air current of wheel and external disturbance in the automobile body, but this mode can't satisfy the steering demand of wheel, and when changing or maintaining the tire, the dismouting is very inconvenient, has reduced the maintenance convenience.
Disclosure of Invention
The invention provides an automobile wheel cavity flow guide structure and an automobile, and solves the problems that in the prior art, the flow guide structure of an automobile wheel cavity has a poor blocking effect on air flow entering the wheel cavity, the steering requirement of wheels cannot be met, and the like.
In view of the above problems, an embodiment of the present invention provides an automobile wheel cavity flow guiding structure, which includes a flow guiding member, and a guiding member and an actuator both mounted on a body of the automobile; the flow guide piece comprises a plurality of flow guide sheets which are enclosed into a circular arc shape matched with a wheel cavity of the automobile; the guide vanes are connected with the driver; the guide vane is driven by the driver to move along the guide piece;
when a diversion instruction for improving the internal aerodynamics of the wheel cavity is received, controlling the driver to drive the plurality of diversion sheets to move along the guide piece and unfold at the opening position of the wheel cavity; and when a retraction instruction is received, controlling the driver to drive the guide vanes to move along the guide piece and retract to the body of the automobile.
Preferably, the controlling the driver to drive the plurality of the guide vanes to move along the guide and to be deployed at the opening position of the wheel cavity includes:
controlling the driver to drive the guide vanes to move towards the wheel center along the guide piece and to be unfolded at the opening positions of the wheel cavity, wherein the unfolded guide vanes are mutually connected at the opening positions of the wheel cavity to form a complete circular arc shape;
the controlling the driver to drive the plurality of guide vanes to move along the guide piece and retract to the body of the automobile comprises the following steps:
and controlling the driver to drive the guide vanes to move towards the direction far away from the wheel centers of the wheels along the guide piece and retract to the automobile body of the automobile, wherein the retracted guide vanes are mutually separated in the automobile body of the automobile to form a spaced circular arc shape.
Preferably, the guide member includes at least two sliding grooves mounted on a body of the automobile and parallel to each other; each guide vane is provided with a moving part; the number of the guide pieces is consistent with that of the guide pieces, the number of the moving pieces is consistent with that of the sliding grooves, and the driver drives the guide pieces to drive the moving pieces to slide along the guide pieces.
Preferably, the extension line of the sliding groove passes through the wheel cavity of the wheel and intersects with the wheel center of the wheel, and the driver drives the flow deflector to drive the moving member to move in parallel along the sliding groove.
Preferably, the driver is a stepping motor or a solenoid valve.
The invention provides an automobile wheel cavity flow guide structure, which comprises a flow guide part, a guide part and a driver, wherein the guide part and the driver are both arranged on an automobile body of an automobile; the flow guide piece comprises a plurality of flow guide sheets which are enclosed into a circular arc shape matched with a wheel cavity of the automobile; the guide vanes are connected with the driver; the guide vane is driven by the driver to move along the guide piece; when a diversion instruction for improving the internal aerodynamics of the wheel cavity is received, controlling the driver to drive the plurality of diversion sheets to move along the guide piece and unfold at the opening position of the wheel cavity; and when a retraction instruction is received, controlling the driver to drive the guide vanes to move along the guide piece and retract to the body of the automobile.
According to the invention, the guide part is arranged on the body of the automobile, the flow guide part is arranged on the body of the automobile and is connected with the driver, and the driver drives the flow guide part to move along the guide part, so that the flow guide part is controlled to be unfolded and retracted at the opening position of the wheel cavity; when the flow deflector moves along the guide piece and is unfolded in the wheel cavity of the vehicle wheel, the gap between the vehicle wheel and the vehicle body can be reduced (namely the gap of the opening part of the wheel cavity of the vehicle wheel is reduced), so that the air flow entering the wheel cavity of the vehicle wheel through the gap is reduced, the fundamental path of the air flow entering the wheel cavity of the vehicle is cut off, the energy consumption of the air flow turbulence in the wheel cavity of the vehicle wheel is reduced, the wind resistance of the vehicle is reduced, and the fuel economy of the vehicle is improved; in addition, this car wheel chamber water conservancy diversion structure has improved the air velocity at car automobile body rear portion effectively, has increased the washing away of air current to the car automobile body, has reduced piling up on the car automobile body of dust, rainwater etc. has promoted the cleanliness factor of car. When a plurality of water conservancy diversion pieces move along the guide piece and retract to the automobile body of automobile, a plurality of water conservancy diversion pieces are hidden on the automobile body of automobile (specifically, hidden on the inner wall of the wheel casing of automobile), and at this moment, the water conservancy diversion piece will not interfere the maximum corner of the wheel of automobile, has satisfied the demand that turns to of wheel, has promoted the suitability of this automobile wheel chamber water conservancy diversion structure.
The invention also provides an automobile which is characterized by comprising an automobile wheel cavity flow guide structure and a control module; the automobile wheel cavity flow guide structure comprises a flow guide piece, a guide piece and a driver, wherein the guide piece and the driver are both arranged on the automobile body of the automobile; the flow guide piece comprises a plurality of flow guide sheets which are enclosed into a circular arc shape matched with a wheel cavity of the automobile; the guide vanes are connected with the driver; the guide vane is driven by the driver to move along the guide piece; the control module is connected with the driver;
when a diversion instruction for improving the internal aerodynamics of the wheel cavity is received, the control module controls the driver to drive the plurality of diversion sheets to move along the guide piece and spread at the opening position of the wheel cavity;
when a retraction instruction is received, the control module controls the driver to drive the guide vanes to move along the guide piece and retract to the body of the automobile. Preferably, the controlling the driver to drive the plurality of the guide vanes to move along the guide and to be deployed at the opening position of the wheel cavity includes:
controlling the driver to drive the guide vanes to move towards the wheel center along the guide piece and to be unfolded at the opening positions of the wheel cavity, wherein the unfolded guide vanes are mutually connected at the opening positions of the wheel cavity to form a complete circular arc shape;
the controlling the driver to drive the plurality of guide vanes to move along the guide piece and retract to the body of the automobile comprises the following steps:
and controlling the driver to drive the guide vanes to move towards the direction far away from the wheel centers of the wheels along the guide piece and retract to the automobile body of the automobile, wherein the retracted guide vanes are mutually separated in the automobile body of the automobile to form a spaced circular arc shape.
Preferably, the driver is a solenoid valve;
when the speed of the automobile is smaller than a first preset value, a control module receives a retraction instruction, and controls the electromagnetic valve to drive the guide vanes to move along the guide piece and retract to the automobile body of the automobile;
when the speed of the automobile is larger than or equal to a first preset value, a control module receives a flow guide instruction, and controls the electromagnetic valve to drive the flow guide pieces to move along the guide piece and to be completely unfolded at the opening position of the wheel cavity.
Preferably, the first preset value is 80km/h.
Preferably, the driver is a stepping motor; the flow guide instructions comprise a first flow guide instruction and a second flow guide instruction;
when the speed of the automobile is smaller than or equal to a second preset value, a control module receives a retraction instruction, and controls the stepping motor to drive the guide vanes to move along the guide piece and retract to the automobile body of the automobile;
when the speed of the automobile is greater than or equal to a third preset value, a control module receives the first flow guide instruction, controls the stepping motor to drive the flow guide plates to move along the guide piece and completely unfold at the opening position of the wheel cavity;
when the speed of the automobile is greater than a second preset value and less than a third preset value, a control module receives the second diversion instruction, controls the stepping motor to drive the plurality of diversion slices to move along the guide piece, and unfolds a preset length at an opening position of the wheel cavity, wherein the preset length is determined according to the speed of the automobile; the second preset value is smaller than the third preset value.
Preferably, the second preset value is 40km/h, and the third preset value is 90km/h.
Preferably, the inner wall of the wheel cavity of the automobile is provided with an accommodating groove, and the driver and the guide piece are both arranged in the accommodating groove;
when the flow guide piece retracts to the body of the automobile, the flow guide piece is completely accommodated in the accommodating groove;
when the flow guide piece is completely unfolded at the opening position of the wheel cavity of the wheel, the distance between the edge of the flow guide piece and the outer edge of the wheel is 5 mm-10 mm.
Drawings
The invention is further illustrated by the following examples in conjunction with the drawings.
Fig. 1 is a schematic view of a flow guide structure of a wheel cavity of an automobile provided in an embodiment of the invention when the opening position of the wheel cavity is fully unfolded;
fig. 2 is a schematic view illustrating the wheel cavity fluid guiding structure of the vehicle retracted into the body of the vehicle according to an embodiment of the present invention;
fig. 3 is a schematic structural view of an automobile wheel cavity flow guiding structure according to an embodiment of the present invention.
The reference numerals in the specification are as follows:
1. a flow guide member; 11. a flow deflector; 12. a moving member; 2. a guide member; 21. a sliding groove; 3. a driver; 4. an automobile; 41. a wheel; 42. the wheel chamber.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
It is to be understood that the terms "upper", "lower", "left", "right", "front", "rear", "middle", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the present invention.
As shown in fig. 1 to 3, an automobile wheel cavity flow guiding structure according to an embodiment of the present invention includes a flow guiding member 1, and a guiding member 2 and an actuator 3 both mounted on a body of an automobile 4; the flow guide piece 1 comprises a plurality of flow guide pieces 11 which are encircled into a circular arc shape matched with a wheel cavity 42 of the automobile 4; the guide vanes 11 are all connected with the driver 3; the guide vane 11 is driven by the driver 3 to move along the guide 2;
when a diversion instruction for improving the internal aerodynamics of the wheel cavity is received, controlling the driver 3 to drive the plurality of diversion sheets 11 to move along the guide 2 and spread at the opening position of the wheel cavity 42; it is to be understood that the protraction command may be a diversion command triggered when the vehicle speed of the automobile 4 exceeds a certain value (for example, is greater than a first preset value or a third preset value described later, etc.); the guide vanes 11 are distributed around the wheel in an arc shape (the wheel 41 is circular, and the center point of the arc shape coincides with the center point of the wheel 41), and when the split type guide piece 1 moves along the guide piece 2 and is completely unfolded (the completely unfolded state means that the extending length of the guide piece 1 is the longest length that the guide piece can extend out), the guide vanes 11 can be in a completely unfolded state, so that the gap between the wheel and the vehicle body is reduced to the maximum extent, and the effect of reducing the air flow entering the wheel cavity through the gap is achieved.
When receiving a retraction command, the driver 3 is controlled to drive the plurality of guide vanes 11 to move along the guide 2 and retract to the body of the automobile 4. It is understood that the retraction command may be a retraction command triggered by the vehicle 4 driving on a bumpy road, requiring a large turning angle, and the like, and the guide 2 moves and retracts to the body of the vehicle 4, so as to meet the passing ability of the vehicle 4 under the complex condition. After the plurality of guide vanes 11 are retracted to the body of the automobile 4, the guide vanes can be hidden on the inner wall of the body of the automobile 4, so that the aesthetic degree of the automobile 4 is ensured.
It can be understood that the air guide 1 is designed into a one-piece structure, and it is easier to completely hide the body of the automobile 4 under the driving of the driver 3 than a one-piece structure; when the flow guide member 1 is unfolded at the opening position of the wheel cavity 42, the flow guide pieces 11 can be mutually butted, so that the technical effect of reducing the opening gap of the wheel cavity 42 is achieved; the separately designed air guide member 1 is easy to control, and the required installation space on the body of the automobile 1 is small (because the spliced air guide pieces 11 are arc-shaped; therefore, compared with the integrated structure, the air guide pieces 11 can move from the retracted position to the opening position of the wheel cavity 42 by only moving along the air guide member 2 for a short preset distance, and after the air guide member of the integrated structure moves in the same direction for the preset distance, a part of the air guide member is exposed to the opening position and is not retracted to the body of the automobile).
In the present embodiment, the guide member 2 is mounted on the body of the automobile 4, the air deflector 1 is mounted on the body of the automobile 4 and connected to the driver 3, and the driver 3 drives the air deflector 1 to move along the guide member 2, so as to control the air deflector 1 to expand and retract at the opening position of the wheel cavity 42; when the guide vane 11 moves along the guide member 2 and is unfolded in the wheel cavity 42, the gap between the wheel and the vehicle body (i.e. the gap of the opening part of the wheel cavity 42) can be reduced, so that the air flow entering the wheel cavity 42 through the gap is reduced, the fundamental path of the air flow entering the wheel cavity of the automobile 4 is cut off, the energy consumption of the air flow turbulence inside the wheel cavity 42 is reduced, the wind resistance of the automobile 4 is reduced, and the fuel economy of the automobile 4 is improved; in addition, the automobile wheel cavity flow guide structure effectively improves the air flow speed at the rear part of the automobile 4, increases the washing of the air flow to the automobile 4, reduces the accumulation of dust, rainwater and the like on the automobile 4, and improves the cleanliness of the automobile 4. When a plurality of the deflectors 11 move along the guide member 2 and retract to the body of the automobile 4, the plurality of the deflectors 11 are hidden in the body of the automobile 4 (specifically, hidden in the inner wall of the wheel casing of the automobile 4), and at this time, the deflectors 11 will not interfere with the maximum rotation angle of the wheels of the automobile 4, so that the applicability of the wheel cavity diversion structure of the automobile 4 is improved.
In one embodiment, the controlling the driver 3 to drive the plurality of baffles 11 to move along the guide 2 and to be deployed at the opening position of the wheel cavity 42 includes:
the driver 3 is controlled to drive the flow deflectors 11 to move towards the wheel center along the guide piece 2 and expand the flow deflectors at the opening positions of the wheel cavity 42, and the expanded flow deflectors 11 are connected with each other at the opening positions of the wheel cavity 42 to form a complete circular arc shape, so that the formed complete circular arc shape has the best air guiding effect (no gap is generated among the flow deflectors, and therefore air leakage from the gap is avoided); it is understood that the wheel center and the wheel cavity refer to the wheel center and the wheel cavity corresponding to the same wheel of the same vehicle.
The controlling the driver 3 to drive the plurality of guide vanes 11 to move along the guide 2 and retract to the body of the automobile 4 includes:
the driver 3 is controlled to drive the guide vanes 11 to move along the guide piece 2 in the direction away from the wheel center of the wheel and retract to the body of the automobile 4, and the retracted guide vanes 11 are separated from each other in the body of the automobile 4 to form a spaced circular arc shape. It will be understood that as the guide vanes 11 move along the guide 2 in a direction away from the wheel center, the distance between the moving points of each guide vane 11 on the guide 2 (assuming that one guide vane 11 corresponds to one moving point on one guide) increases gradually, so that the guide vanes 11 are gradually separated in a direction away from the wheel center and form a spaced circular arc shape.
Specifically, when the guide vanes of the guide vanes 11 move toward the wheel center of the wheel, the guide vanes 11 contact with each other to form a complete arc shape, so that the effect of reducing the flow rate of the gas entering the wheel cavity through the gap is achieved; when the baffles of the baffles 11 move in a direction away from the wheel centers of the wheels, the baffles 11 are separated from each other into a plurality of mutually independent baffles 11, and at this time, the plurality of baffles 11 are hidden on the body of the automobile 4.
In one embodiment, the actuator 3 is a solenoid valve; it is understood that the driving member includes, but is not limited to, the solenoid valve, and the driving member may also be a pneumatic cylinder, a hydraulic cylinder, or the like.
When a diversion instruction is received, the electromagnetic valve is controlled to drive the diversion sheets 11 to move along the guide piece 2 and to be completely unfolded at the opening position of the wheel cavity 42;
when receiving a retraction command, the solenoid valve is controlled to drive the plurality of guide vanes 11 to move along the guide 2 and retract to the body of the automobile 4.
It can be understood that the control module on the vehicle 4 can control the expansion and contraction of the solenoid valve, so as to control the plurality of baffles 11 to move back and forth along the guide 2, thereby achieving the technical effect that the plurality of baffles 11 are completely deployed at the opening position of the wheel cavity 42, or retracted to the body of the vehicle 4. The electromagnetic valve is small in size, convenient to install on the body of the automobile 4 and easy to control.
In one embodiment, the driver 3 is a stepper motor; it is understood that the driving member includes, but is not limited to, the stepping motor, and the driving member may be a pneumatic cylinder, a hydraulic cylinder, or the like.
When a diversion instruction is received, controlling the stepping motor to drive the plurality of diversion slices 11 to move along the guide piece 2, and unfolding a preset length at the opening position of the wheel cavity 42, wherein the preset length is determined according to the speed of the automobile 4;
when a retraction instruction is received, the stepping motor is controlled to drive the guide vanes 11 to move along the guide piece 2 and retract to the body of the automobile 4.
It can understand, control module can confirm that water conservancy diversion piece 11 is in according to the speed of a motor vehicle the preset length that the open position in wheel chamber 42 expandes, later control the rotatory speed of step motor, so that it is a plurality of water conservancy diversion piece 11 follows under this step motor's above-mentioned rotation rate guide 2 is in the open position in wheel chamber 42 expandes preset length, thereby can change the open-ended size in wheel chamber 42 satisfies promptly car 4 is the different demand that reduces whole car windage under the operating mode of difference, has promoted this car wheel chamber water conservancy diversion structure's practicality.
In one embodiment, as shown in fig. 3, the guide 2 includes at least two sliding grooves 21 mounted on the body of the automobile 4 and parallel to each other; each flow deflector 11 is provided with a moving part 12; the number of the guide pieces 2 is the same as that of the guide vanes 11, the number of the moving pieces 12 is the same as that of the sliding grooves 21, and the driver 3 drives the guide vanes 11 to drive the moving pieces 12 to slide along the guide pieces 2. It should be understood that, in a specific embodiment, the air guiding member 1 includes three air guiding plates 11, two moving members 12 are disposed on each air guiding plate 11, and a total of six moving members 12 are included, six sliding grooves 21 are disposed on the body of the automobile 4, and each two sliding grooves 21 correspond to one air guiding plate 11; at least two parallel sliding grooves 21 are arranged on the body of the automobile 4, so that the guide vane 11 can smoothly move from the sliding grooves 21; in addition, the sliding groove 21 can also play a role in supporting the guide vane 11, so that the installation space required by the automobile wheel cavity guide structure on the automobile 4 is further reduced.
In one embodiment, an extension line of the sliding groove 21 passes through the wheel cavity 42 and intersects with the wheel center, and the driver drives 3 the deflector 11 to drive the moving member 12 to move in parallel along the sliding groove 21. It can be understood that the extension lines of the sliding grooves 21 of the plurality of guide members 2 intersect with the wheel center, thereby ensuring that the plurality of guide vanes 11 are connected with each other at the opening position of the wheel cavity 42 to form a complete circular arc shape when the plurality of guide vanes 11 move along the sliding grooves 21.
As shown in fig. 1, the present invention further provides an automobile, which includes the above-mentioned automobile wheel cavity diversion structure and a control module (not shown);
the automobile wheel cavity flow guide structure comprises a flow guide part 1, a guide part 2 and a driver 3 which are both arranged on the automobile body of the automobile; the flow guide piece 1 comprises a plurality of flow guide pieces 11 which are encircled into a circular arc shape matched with a wheel cavity 42 of the automobile 4; the guide vanes 11 are all connected with the driver 3; the guide vane 11 is driven by the driver to move along the guide part 2; the control module is connected with the driver 3;
when a diversion instruction for improving the internal aerodynamics of the wheel cavity 42 is received, the control module controls the driver 3 to drive the plurality of diversion sheets 11 to move along the guide 2 and unfold at the opening position of the wheel cavity 42;
when receiving a retraction command, the control module controls the driver 3 to drive the plurality of guide vanes 11 to move along the guide 2 and retract to the body of the automobile 4. It will be understood that the control module is used to control the movement of the actuator 3, so as to control the air deflector 1 to move along the air deflector 11 to deploy or retract into the body of the automobile 4 at the opening position of the wheel cavity 42.
In the invention, the guide part 2 is arranged on the body of the automobile 4, the air guide part 1 is arranged on the body of the automobile 4 and is connected with the driver 3, and the driver 3 drives the air guide part 1 to move along the guide part 2, thereby controlling the air guide part 1 to be unfolded and retracted at the opening position of the wheel cavity 42; when the guide vane 11 moves along the guide member 2 and is unfolded in the wheel cavity 42, the gap between the wheel and the vehicle body (i.e. the gap of the opening part of the wheel cavity 42) can be reduced, so that the air flow entering the wheel cavity 42 through the gap is reduced, the fundamental path of the air flow entering the wheel cavity of the automobile 4 is cut off, the energy consumption of the air flow turbulence inside the wheel cavity 42 is reduced, the wind resistance of the automobile 4 is reduced, and the fuel economy of the automobile 4 is improved; in addition, the automobile wheel cavity flow guide structure effectively improves the air flow speed at the rear part of the automobile 4, increases the washing of the air flow to the automobile 4, reduces the accumulation of dust, rainwater and the like on the automobile 4, and improves the cleanliness of the automobile 4. When the plurality of guide vanes 11 move along the guide member 2 and retract to the body of the automobile 4, the plurality of guide vanes 11 are hidden in the body of the automobile 4 (specifically, hidden in the inner wall of the wheel casing of the automobile 4), and at this time, the guide vanes 11 will not interfere with the maximum rotation angle of the wheels of the automobile 4, so that the applicability of the wheel cavity flow guiding structure of the automobile 4 is improved.
In one embodiment, the controlling the driver 3 to drive the plurality of baffles 11 to move along the guide 2 and to be deployed at the opening position of the wheel cavity 42 includes:
controlling the driver 3 to drive the plurality of flow deflectors 22 to move towards the wheel center along the guide 2 and to be unfolded at the opening position of the wheel cavity 42, wherein the unfolded flow deflectors 11 are connected with each other at the opening position of the wheel cavity 42 to form a complete circular arc shape;
the controlling the driver 3 to drive the plurality of guide vanes 11 to move along the guide 2 and retract to the body of the automobile 4 includes:
and controlling the driver 3 to drive the guide vanes 11 to move along the guide piece 2 in the direction away from the wheel centers of the wheels and retract to the body of the automobile 4, wherein the retracted guide vanes 11 are separated from each other in the body of the automobile 4 to form a spaced circular arc shape.
It can be understood that when the deflector is fully unfolded at the opening position of the wheel cavity 42, the plurality of deflectors 11 form a complete arc shape, so that the air guiding effect of the active air guiding dam structure is optimal (no gap is generated between the deflectors, and therefore air leakage from the gap is avoided).
In one embodiment, the actuator 3 is a solenoid valve;
when the speed of the automobile 4 is less than a first preset value, the control module receives a retraction instruction, and controls the electromagnetic valve to drive the guide vanes 11 to move along the guide piece 2 and retract to the body of the automobile 4; it is understood that the retraction instruction may be an instruction received by the control module when a user manually triggers a first switch button (the first switch button is a button disposed on the vehicle body or a virtual button disposed on a display screen connected to the control module of the vehicle 4), or may be an instruction automatically triggered by the control module of the vehicle 4 when the vehicle is running at a low speed (i.e., the speed of the vehicle 4 is less than a first preset value) (or may be automatically triggered under other specific vehicle conditions, for example, when a sensor detects that the current degree of vehicle pitching exceeds a preset degree of pitching). Under the operating mode that car 4 went on the low-speed or road conditions of jolting, the windage of the wheel chamber 42 position of car 4 was little to the resistance influence of whole car, and control module received under this operating mode and retracted the instruction after, control 3 drives a plurality ofly water conservancy diversion piece 11 is followed guide 2 removes and retracts to car 4's automobile body has thereby satisfied car 4's trafficability characteristic (trafficability characteristic includes car 4 is when sharp turn trafficability characteristic when 41 maximum steering angle of wheel and trafficability characteristic when car 4 goes on the highway section of jolting etc.).
When the speed of the automobile 4 is greater than or equal to a first preset value, the control module receives a diversion instruction, and controls the electromagnetic valve to drive the plurality of diversion sheets 11 to move along the guide member 2 and to be completely unfolded at the opening position of the wheel cavity 42. Preferably, the first preset value is 80km/h. Understandably, the first preset value can also be set to 70km/h, 85km/h, 90km/h and the like according to requirements; the diversion instruction is an instruction which is automatically triggered when the speed of the automobile 4 is greater than a first preset value, and because the airflow at the position of the wheel cavity of the automobile 4 has a large influence on the resistance of the whole automobile in a high-speed driving state, the control module receives the diversion instruction and controls the driver 3 to drive the plurality of diversion sheets 11 to move along the guide piece 2 and to be completely unfolded behind the opening position of the wheel cavity 42 in the high-speed driving state, the wind resistance of the automobile 4 in the high-speed driving state is reduced, and the fuel economy of the automobile 4 is improved.
It can be understood that the automobile 4 is provided with a control button for starting or closing the function of the control module for receiving the diversion instruction, when the control button is not triggered, the control module can receive the diversion instruction and the retraction instruction, and at this time, the diversion sheet 11 can be unfolded according to the received diversion instruction or retract the body of the automobile 4 according to the received retraction instruction; when the control button is triggered, the function of the automobile 4 receiving the diversion instruction is turned off, and at this time, the control module can only receive the retraction instruction but cannot receive the diversion instruction, that is, the diversion sheet 11 can only retract the body of the automobile 4 according to the received retraction instruction but cannot be unfolded; the control button can be triggered under special vehicle conditions (for example, under the condition that the running road in front is expected to continuously bump or make a sharp turn), so that the deflector 11 can only retract into the vehicle body of the vehicle and cannot be unfolded, thus energy loss caused by repeated extension and retraction of the deflector 11 can be avoided, damage to the deflector 11 under special vehicle conditions can also be avoided, and the safety of the vehicle 4 is ensured.
In one embodiment, the driver 3 is a stepper motor; the flow guide instructions comprise a first flow guide instruction and a second flow guide instruction;
when the speed of the automobile 4 is less than or equal to a second preset value, the control module receives a retraction instruction, and controls the stepping motor to drive the guide vanes 11 to move along the guide piece 2 and retract to the body of the automobile 4;
when the speed of the automobile 4 is greater than or equal to a third preset value, the control module receives the first diversion instruction, controls the stepping motor to drive the plurality of diversion slices 11 to move along the guide piece 2 and to be completely unfolded at the opening position of the wheel cavity 42;
when the speed of the automobile 4 is greater than a second preset value and less than a third preset value, the control module receives the second diversion instruction, controls the stepping motor to drive the plurality of diversion slices 11 to move along the guide 2, and unfolds a preset length at the opening position of the wheel cavity 42, wherein the preset length is determined according to the speed of the automobile 4; the second preset value is smaller than the third preset value. Preferably, the second preset value is 40km/h, and the third preset value is 90km/h. It is understood that the second preset value can be set to 30km/h, 35km/h, 45km/h, etc. according to the requirement, and the third preset value can be set to 80km/h, 90km/h, 100km/h, etc. according to the requirement.
It can be understood that, in this embodiment, the first diversion instruction is an instruction that is automatically triggered by the automobile 4 in a medium-speed (the speed of the automobile 4 is greater than a second preset value and less than a third preset value) running state, and the second diversion instruction is a diversion instruction that is automatically triggered by the automobile 4 in a high-speed (the speed of the automobile 4 is greater than the third preset value) running state; when the automobile 4 is in a low-speed (when the speed of the automobile 4 is less than or equal to a second preset value) driving state, the control module receives a retraction instruction, and controls the driver 3 to drive the diversion piece 1 to retract to the body of the automobile 4, so that the requirement of the automobile 4 on the trafficability characteristic when the automobile 4 is in the low-speed driving state is met; when the automobile 4 runs at a medium speed, the control module drives the air guide member 1 to move to different distances along the guide member 2 (at this time, the distance that the air guide member 1 moves along the guide member 2 (namely, the preset length that the air guide sheet 11 is unfolded) is determined by the speed of the automobile 4, for example, the distance that the air guide member 1 moves along the guide member 2 is in direct proportion to the speed of the automobile 4), so that the requirements of reducing the wind resistance of the whole automobile and having good passing performance when the automobile 4 runs at a medium speed are met; when the automobile 4 runs at a high speed, the control module controls the driver 3 to drive the flow guide piece 1 to be completely unfolded at the opening position of the wheel cavity 42, so that the requirement of reducing the wind resistance of the whole automobile is met.
It can be understood that the automobile 4 is provided with a control button for starting or stopping the function of the control module receiving the diversion instruction (including the first diversion instruction and the second diversion instruction), when the control button is not triggered, the control module may receive the diversion instruction and the retraction instruction, at this time, the deflector 11 may be deployed according to the received diversion instruction (including being deployed for a preset length at the opening position of the wheel cavity 42 according to the speed of the automobile 4), or retracted into the body of the automobile 4 according to the received retraction instruction; when the control button is triggered, the function of the automobile 4 receiving the diversion instruction is closed, and at the moment, the control module can only receive the retraction instruction and cannot receive the diversion instruction, that is, the diversion piece 11 can only retract the automobile body of the automobile 4 according to the received retraction instruction and cannot be unfolded; the control button can be triggered under special vehicle conditions (for example, under the condition that the running road in front is expected to continuously bump or make a sharp turn), so that the deflector 11 can only retract into the body of the vehicle 4 and cannot be unfolded, thus energy loss caused by repeated extension and retraction of the deflector 11 can be avoided, damage to the deflector 11 under special vehicle conditions can also be avoided, and the safety of the vehicle 4 is ensured.
In one embodiment, a containing groove (not shown) is formed on an inner wall of a wheel cavity of the automobile 4, and the driver 3 and the guide 2 are both installed in the containing groove; it is understood that the receiving groove may be formed on an inner wall of the body of the automobile 4 near the wheel cavity.
When the air guide member 1 retracts to the body of the automobile 4, the air guide member 1 is completely accommodated in the accommodating groove; it can be understood that when the air guide member 1 is extended to the body of the automobile 4, the air guide member 1 can be completely retracted into the accommodating groove, so that the accommodating groove protects the air guide member 1, the driver 3, and the guide member 2 and does not interfere with the maximum steering angle of the automobile 4.
When the air deflector 1 is fully unfolded at the opening position of the wheel cavity 42, the distance between the edge of the air deflector 11 and the outer edge of the wheel 41 is 5mm to 10mm (e.g., 5mm, 7mm, 10mm, etc.). It can be understood that when the air deflector 1 is fully unfolded at the wheel cavity opening position, the edge of the air deflector 11 is at a certain height distance from the outer edge of the wheel, which can ensure the passing and safety of the automobile 4 when running at high speed.
The present invention is not limited to the above preferred embodiments, and any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (11)
1. The automobile wheel cavity flow guide structure is characterized by comprising a flow guide part, a guide part and a driver, wherein the guide part and the driver are both arranged on an automobile body of an automobile; the flow guide piece comprises a plurality of flow guide sheets which are enclosed into a circular arc shape matched with a wheel cavity of the automobile; the guide vanes are connected with the driver; the guide vane is driven by the driver to move along the guide piece;
when a diversion instruction for improving the internal aerodynamics of the wheel cavity is received, controlling the driver to drive the plurality of diversion sheets to move along the guide piece and unfold at the opening position of the wheel cavity;
when a retraction instruction is received, controlling the driver to drive the guide vanes to move along the guide piece and retract to the body of the automobile;
the guide piece comprises at least two sliding grooves which are arranged on the body of the automobile and are parallel to each other; each guide vane is provided with a moving part; the number of the guide pieces is consistent with that of the guide vanes, the number of the moving pieces is consistent with that of the sliding grooves, and the driver drives the guide vanes to drive the moving pieces to slide along the guide pieces.
2. The automobile wheel well flow guiding structure according to claim 1, wherein the controlling the driver to drive the plurality of flow deflectors to move along the guide and to be deployed at the opening position of the wheel well comprises:
the driver is controlled to drive the plurality of flow deflectors to move towards the wheel center along the guide piece and to be unfolded at the opening position of the wheel cavity, and the unfolded flow deflectors are mutually connected at the opening position of the wheel cavity to enclose a complete circular arc shape;
the controlling the driver to drive the plurality of the guide vanes to move along the guide piece and retract to the body of the automobile comprises:
and controlling the driver to drive the guide vanes to move towards the direction far away from the wheel centers of the wheels along the guide piece and retract to the automobile body of the automobile, wherein the retracted guide vanes are mutually separated in the automobile body of the automobile to form a spaced circular arc shape.
3. The automobile wheel cavity flow guide structure as claimed in claim 1, wherein an extension line of the sliding groove passes through the wheel cavity and intersects with the wheel center, and the driver drives the flow guide plate to drive the moving member to move in parallel along the sliding groove.
4. The automobile wheel cavity flow guiding structure according to claim 1, wherein the driver is a stepping motor or a solenoid valve.
5. The automobile is characterized by comprising an automobile wheel cavity flow guide structure and a control module;
the automobile wheel cavity flow guide structure comprises a flow guide piece, a guide piece and a driver, wherein the guide piece and the driver are both arranged on the automobile body of the automobile; the flow guide piece comprises a plurality of flow guide sheets which are enclosed into a circular arc shape matched with a wheel cavity of the automobile; the guide vanes are connected with the driver; the guide vane is driven by the driver to move along the guide piece; the control module is connected with the driver; the guide piece comprises at least two sliding grooves which are arranged on the body of the automobile and are parallel to each other; each guide vane is provided with a moving part; the number of the guide pieces is consistent with that of the guide pieces, the number of the moving pieces is consistent with that of the sliding grooves, and the driver drives the guide pieces to drive the moving pieces to slide along the guide pieces;
when a diversion instruction for improving the internal aerodynamics of the wheel cavity is received, the control module controls the driver to drive the plurality of diversion sheets to move along the guide piece and spread at the opening position of the wheel cavity;
when a retraction instruction is received, the control module controls the driver to drive the guide vanes to move along the guide piece and retract to the body of the automobile.
6. The automobile of claim 5, wherein the controlling the driver to drive the plurality of guide vanes to move along the guide and to be deployed at the opening position of the wheel cavity comprises:
the driver is controlled to drive the plurality of flow deflectors to move towards the wheel center along the guide piece and to be unfolded at the opening position of the wheel cavity, and the unfolded flow deflectors are mutually connected at the opening position of the wheel cavity to enclose a complete circular arc shape;
the controlling the driver to drive the plurality of guide vanes to move along the guide piece and retract to the body of the automobile comprises the following steps:
and controlling the driver to drive the guide vanes to move towards the direction far away from the wheel center of the wheel along the guide piece and retract to the automobile body, wherein the retracted guide vanes are mutually separated in the automobile body to form a spaced circular arc shape.
7. The vehicle of claim 5, wherein the actuator is a solenoid valve;
when the speed of the automobile is smaller than a first preset value, a control module receives a retraction instruction, and controls the electromagnetic valve to drive the guide vanes to move along the guide piece and retract to the automobile body of the automobile;
when the speed of the automobile is larger than or equal to a first preset value, a control module receives a flow guide command, and controls the electromagnetic valve to drive the flow guide pieces to move along the guide piece and to be completely unfolded at the opening position of the wheel cavity.
8. The automobile of claim 7, wherein the first preset value is 80km/h.
9. The vehicle of claim 5, wherein the driver is a stepper motor; the flow guide instructions comprise a first flow guide instruction and a second flow guide instruction;
when the speed of the automobile is smaller than or equal to a second preset value, a control module receives a retraction instruction, and controls the stepping motor to drive the guide vanes to move along the guide piece and retract to the automobile body of the automobile;
when the speed of the automobile is greater than or equal to a third preset value, a control module receives the first flow guide instruction, controls the stepping motor to drive the flow guide plates to move along the guide piece and completely unfold at the opening position of the wheel cavity;
when the speed of the automobile is greater than a second preset value and less than a third preset value, a control module receives the second diversion instruction, controls the stepping motor to drive the plurality of diversion slices to move along the guide piece, and unfolds a preset length at an opening position of the wheel cavity, wherein the preset length is determined according to the speed of the automobile; the second preset value is smaller than the third preset value.
10. The automobile of claim 9, wherein the second preset value is 40km/h and the third preset value is 90km/h.
11. The automobile of claim 5, wherein a receiving groove is formed on an inner wall of a wheel cavity of the automobile, and the driver and the guide are installed in the receiving groove;
when the flow guide piece retracts to the body of the automobile, the flow guide piece is completely accommodated in the accommodating groove;
when the flow guide piece is completely unfolded at the opening position of the wheel cavity of the wheel, the distance between the edge of the flow guide piece and the outer edge of the wheel is 5 mm-10 mm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010213667.5A CN113443025B (en) | 2020-03-24 | 2020-03-24 | Car wheel chamber water conservancy diversion structure and car |
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| CN202010213667.5A CN113443025B (en) | 2020-03-24 | 2020-03-24 | Car wheel chamber water conservancy diversion structure and car |
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| CN113443025A CN113443025A (en) | 2021-09-28 |
| CN113443025B true CN113443025B (en) | 2022-10-11 |
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| US20190322128A1 (en) * | 2018-04-18 | 2019-10-24 | GM Global Technology Operations LLC | Vehicle wheel assembly including a self-deployed wheel shutter system |
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| CN113443025A (en) | 2021-09-28 |
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