CN104443072A - Flow guiding plate designing method and flow guiding plate structure designed with the same - Google Patents
Flow guiding plate designing method and flow guiding plate structure designed with the same Download PDFInfo
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- CN104443072A CN104443072A CN201310441504.2A CN201310441504A CN104443072A CN 104443072 A CN104443072 A CN 104443072A CN 201310441504 A CN201310441504 A CN 201310441504A CN 104443072 A CN104443072 A CN 104443072A
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- deflecting plate
- grid
- refrigerating module
- air
- flow
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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
- B62D35/005—Front spoilers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D37/00—Stabilising vehicle bodies without controlling suspension arrangements
- B62D37/02—Stabilising vehicle bodies without controlling suspension arrangements by aerodynamic means
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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
Abstract
The invention discloses a flow guiding plate designing method which comprises the following steps that according to the model and the structure of a car cabin front end grid and the deviation situation of a cooling module and the grid at a forward-direction projection position, an initial structure of flow guiding plates is determined, and the initial structure at least comprises the shape, the number and the arranging positions of the flow guiding plates; according to the air flow backflow route in the cabin under an idling or low-speed working condition of a car, the initial structure is adjusted, the assembling positions of the flow guiding plates are determined, and the air flow backflow route is blocked; the flow guiding plates are optimized, and a cooling module and cooling air amount meet the requirement of a car cooling system; and the arrangement between the flow guiding plate and the cooling module is optimized, and accordingly pneumatic resistance in the car cabin is lowered. The invention further discloses the flow guiding plate structure designed with the flow guiding plate designing method. According to the flow guiding plate designing method and the flow guiding plate structure designed with the same, hot gas backflow can be avoided, the air inlet amount of the cooling module is increased, and pneumatic resistance can be lowered.
Description
Technical field
The present invention relates to vehicle complete vehicle field of heat management, the deflector structure particularly relating to a kind of deflecting plate method of designing and designed by this method of designing.
Background technology
Car load heat management and aerodynamic performance are one of important performances of automobile, and it concerns running car reliability, economy and dynamic property, is the important technology difficult problem in automotive development process.In automobile design process, cabin Front-end Design is unreasonable easily causes that idling refluxes, leakage current and turbulent flow, causes that subsystem heat efficiency is low, cabin accumulated heat or the problem such as excessively cold, affects automotive performance and life-span; Meanwhile, aerodynamic performance optimization reduces car load resistance, reduces the important channel of oil consumption.
In prior art, whether front end component (as front bumper, grid, front end deflecting plate, the front-end module etc.) design of automobile rationally directly affects the heat management performance of automobile engine nacelle.Design and develop in process at most of new model, because the unreasonable hot gas re-flow caused of front end component design is FAQs.Wherein: hot gas re-flow refers to, when vehicle (being generally preposition forerunner) enters idling or speed operation after high load capacity work, fan is only had to carry out forced convection due in now machinery space, by the impact of machinery space structure, the various clearance backflow of the hot blast that fan blows out easily through front end are on front side of refrigerating module, inlet temperature on front side of refrigerating module is raised, and cooling effectiveness reduces.
Deflecting plate is one of important feature of isolated hot gas re-flow in prior art, and it, while performance guide functions, also can alleviate the problem of above-mentioned hot gas re-flow to a certain extent.But there is following technical matters in the deflecting plate that existing deflecting plate method of designing is designed:
A, cannot promote the cooling air quantity of refrigerating module (condenser, radiator, intercooler), the efficiency of cooling system is not high;
B, valve action can not utilized to reduce the aerodynamic drag of car load;
C, project organization are complicated, and cost is relatively high.Therefore, be necessary the method for designing proposing a kind of deflecting plate, the deflecting plate designed is solved the problem.
Summary of the invention
Technical matters to be solved by this invention is, the deflector structure providing a kind of deflecting plate method of designing and designed by this method of designing, can prevent hot gas re-flow, increases the suction quantity of refrigerating module, and can reduce aerodynamic drag.
In order to solve the problems of the technologies described above, The embodiment provides a kind of deflecting plate method of designing, comprising the following steps:
Step S1, according to the moulding of vehicle cabin front grill and structure and refrigerating module and the deviation situation of grid on forward projection position, determine the preliminary structure of deflecting plate, preliminary structure at least comprises the form of deflecting plate, quantity and position, it comprises: step S11, according to the structure of the moulding adjustment deflecting plate of vehicle cabin front grill, make the extension of its grid of more fitting; Step S12, when grid is two air intake structures or the integral type cell sructure of upper and lower opening formula, adopts monolithic deflecting plate; Or step S13, when grid is with the 3rd grid, according to the design goal of the 3rd grid, is confirmed whether to arrange deflecting plate; Step S2, according to the airflow reflux path of vehicle under idling or speed operation in cabin, adjustment preliminary structure also determines the rigging position of deflecting plate, in order to intercept the path of airflow reflux, it comprises: step S21, deflecting plate is located in cabin and airflow reflux path intercepts air-flow, make air-flow go back to the front side of a front-end module that cannot be back to refrigerating module along former flow path or be mounted with refrigerating module; Step S3, be optimized deflecting plate, make the cooling air quantity of refrigerating module meet the requirement of cooling system of vehicle, it comprises: step S31, the moulding radian of the edge radian dative grid of deflecting plate is set to unanimously, to make the gap uniformity between deflecting plate and grid; Step S4, optimize the layout between deflecting plate and refrigerating module, to reduce the aerodynamic drag in vehicle cabin, it comprises: step S41, under the prerequisite meeting the requirement of refrigerating module air quantity, reduce the inclination angle of deflecting plate, in order to reduce the resistance because vehicle engine room inside causes, wherein: the inclination angle of deflecting plate is the angle of deflecting plate and refrigerating module windward side.
Wherein, step S12 comprises: step S121, when grid is two air intake structures of upper and lower opening formula, and between two grids without arrangement space time, corresponding upper and lower two grid opening parts adopt two pieces of deflecting plates respectively.
Wherein, step S1 comprises: step S14, and when refrigerating module and grid exist the deviation in vertical ground direction on forward projection position, deflecting plate is set to the structure of upper and lower water conservancy diversion; Or step S15, when refrigerating module and grid exist the deviation in direction, parallel ground on forward projection position, deflecting plate is set to the structure of left and right water conservancy diversion; Wherein: forward projection position is be parallel to the plane on ground and the intersection direction in vehicle center face.
Wherein, step S2 also comprises: step S22, on the basis of guaranteeing vehicle cabin parts normal function and assembling and the withdrawal space, controls between deflecting plate and front-end module gap, in order to make vehicle at high speeds air-flow do not flow to the both sides of refrigerating module.
Wherein, the gap between deflecting plate and refrigerating module is less than or equal to 10mm.
Wherein, step S3 also comprises: step S32, when the opening of grid is larger, reduces the inclination angle of deflecting plate to reduce the air-flow being entered refrigerating module by grid; Or step S33, when grid opening is less or do not mate with refrigerating module, increases the inclination angle of deflecting plate to improve the air-flow being entered refrigerating module by grid.
Wherein, step S3 also comprises: step S34, and after the inclination angle of deflecting plate is determined, grid take deflecting plate as border until its edge partially enclosed, in order to reduce air resistance coefficient.
Wherein, step S4 also comprises: step S42, reduce deflecting plate and and its parts that there is matching relationship between gap.
Wherein, step S4 also comprises: step S43, deflecting plate and grid edge is fitted, and all flows through refrigerating module in order to make the air-flow being entered vehicle cabin by grid; Or step S44, deflecting plate matches with the perforate at fender guard place, vehicle cabin, in order to air-flow is guided out vehicle cabin.
The invention also discloses a kind of deflector structure designed by above-mentioned deflecting plate method of designing, comprise the draft angle arranging vehicle die waterway and ejecting mechanism, draft angle is more than or equal to 3 °.
Wherein, at the non-air-flow face design reinforced rib at the deflecting plate back side, and convolution clamping structure and location structure is provided with in the many places of deflecting plate.
Deflecting plate method of designing provided by the present invention and the deflector structure designed by this method of designing, have following beneficial effect:
The first, vehicle is under idling or speed operation, can be back on front side of front-end module from the hot air of vehicle engine compartments internal fan blowout, designed by the deflecting plate that goes out can block the path of air flow direction front-end module, the hot gas of backflow cannot be aspirated by fan.
The second, vehicle is under high-speed working condition, from the cooling-air flow that grid enters, goes out the directional tagging of deflecting plate, air-flow velocity is improved, adds the air quantity of refrigerating module designed by passing through.
Three, under high-speed working condition, the directional tagging of deflecting plate is gone out designed by the air-flow entering grid is subject to, be forced through refrigerating module, thus avoid to flow to from left and right sides and to form vortex on rear side of cabin and then increase pneumatic internal resistance, thus play the effect reducing air resistance coefficient.
Four, Stability Analysis of Structures, can avoid vibration noise; It is convenient to assemble, and is easy to control cost.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the FB(flow block) of embodiment of the present invention deflecting plate method of designing.
Fig. 2 is the layout explosion schematic diagram of vehicle engine room inside main parts size in embodiment of the present invention deflecting plate method of designing.
Fig. 3 is the plan structure schematic diagram of vehicle engine room inside main parts size in embodiment of the present invention deflecting plate method of designing.
Fig. 4 is the facade structures schematic diagram of embodiment of the present invention deflector structure.
Fig. 5 is the main TV structure schematic diagram of embodiment of the present invention deflector structure.
Fig. 6 is the backsight structural representation of embodiment of the present invention deflector structure.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
In conjunction with see shown in Fig. 1-Fig. 3, it is the embodiment one of deflecting plate method of designing of the present invention.Deflecting plate method of designing in the present embodiment comprises the following steps:
Step S1, according to the moulding of vehicle cabin front grill and structure and refrigerating module and the deviation situation of grid on forward projection position, determines the preliminary structure of deflecting plate.Wherein: preliminary structure at least comprises the form of deflecting plate, quantity and position;
Step S2, according to the airflow reflux path of vehicle under idling or speed operation in cabin, adjustment preliminary structure also determines the rigging position of deflecting plate, in order to intercept the path of airflow reflux;
Step S3, is optimized deflecting plate, makes the cooling air quantity of refrigerating module meet the requirement of cooling system of vehicle;
Step S4, optimizes the layout between deflecting plate and refrigerating module, to reduce the aerodynamic drag in vehicle cabin.
Fig. 2 is the layout explosion schematic diagram of vehicle engine room inside main parts size in the present embodiment deflecting plate method of designing, and it specifically comprises: front-end module 2, refrigerating module 3, grid 4, fan 5 and deflecting plate 1.Because deflecting plate 1, front-end module 2, refrigerating module 3 and grid 4 exist coupling requirement, when the layout adjustment of the moulding of grid 4, structure and refrigerating module 3, the change of air current flow in cabin will be caused, need to adjust the structure of deflecting plate 1 for these changes.The preliminary structure of design deflecting plate 1 specifically comprises the following steps:
Step S11, according to the structure of the moulding adjustment deflecting plate of vehicle cabin front grill, makes the extension of its grid 4 of more fitting.Deflecting plate 1 and the matching degree of grid 4 after having assembled have influence on its gap between the two, also the airshed being imported refrigerating module 3 by grid 4 opening is had influence on, more to fit the extension of grid 4 by designing the trend of deflecting plate 1, farthest can play the guide functions of deflecting plate 1.
Step S12, when grid is two air intake structures or the integral type cell sructure of upper and lower opening formula, adopts monolithic deflecting plate;
Step S121, when grid is two air intake structures of upper and lower opening formula, and between two grids without arrangement space time, corresponding upper and lower two grid opening parts adopt two pieces of deflecting plates respectively.Or
Step S13, when grid is with the 3rd grid, according to the design goal of the 3rd grid, is confirmed whether to arrange deflecting plate.
The function of above-mentioned steps is: because the impact of design usually by the outer moulding of vehicle of grid 4 is comparatively large, the profile of grid 4 may not be the structure of rule; In addition, because the layout difference of vehicle cabin front anti-collision beam (not shown) is also very large, if deflecting plate 1 to be designed to comparatively complicated structure, the problem that arrangement space is inadequate may be caused.
Preferred embodiment: step S1 comprises:
Step S14, when refrigerating module 3 and grid 4 exist the deviation in vertical ground direction on forward projection position, deflecting plate 1 is set to the structure of upper and lower water conservancy diversion; Or
Step S15, when refrigerating module 3 and grid 4 exist the deviation in direction, parallel ground on forward projection position, deflecting plate 1 is set to the structure of left and right water conservancy diversion; Wherein: forward projection position is be parallel to the plane on ground and the intersection direction in vehicle center face.
The function of above-mentioned steps is: due to front bumper, there is the requirement that cloth is set up cooperation between grid 4 and front-end module 2, and front-end module 2 is subject to the restriction of engine room arrangement usually (as collision safety requirement, front-end module 2 position is restricted), the refrigerating module 3 installed in front-end module 2 (is namely parallel to the plane on ground and the intersection direction in autocentre face) with the position of grid 4 and there is deviation in forward projection.Deflecting plate 1 is mainly determined according to deviation in layout, in order to realize guide functions, increases the suction quantity of refrigerating module.As vertical ground direction exists deviation, just need by the upper and lower side of baffle arrangement at front-end module 2 or grid 4 and bumper/spoiler, the structure of upper and lower water conservancy diversion, in order to realize guide functions, increases the suction quantity of refrigerating module.
Further, the step S2 in the present embodiment comprises:
Step S21, is located at deflecting plate in cabin and airflow reflux path intercepts air-flow, makes air-flow go back to the front side of a front-end module that cannot be back to refrigerating module along former flow path or be mounted with refrigerating module.
During design, because idling backflow is one of main design goal of deflecting plate 1, the version of deflecting plate 1 must determine according to backflow.And backflow mainly produces with the gap of refrigerating module 3 via front-end module 2 surrounding or front-end module 2.Deflecting plate 1 will play the effect of anti-backflow, must realize the function in the path intercepting airflow reflux.
During concrete enforcement, refer to Fig. 2, when vehicle enters idling or speed operation after high load capacity work, now be mainly fan 5 in machinery space and carry out forced convection, the direction of its air current flow is T, according to the return flow path design in flow field, deflecting plate 1 is located in cabin airflow reflux path intercepts air-flow, air-flow can be made to go back to the front side that cannot be back to refrigerating module 3 or front-end module 2 along former flow path.Preferred embodiment, incorporated by reference to see Fig. 3, be the plan structure schematic diagram of vehicle engine room inside main parts size in the present embodiment deflecting plate method of designing, wherein: step S2 also comprises:
Step S22, on the basis of guaranteeing vehicle cabin parts normal function and assembling and the withdrawal space, controls between deflecting plate and refrigerating module 3 gap, in order to make vehicle at high speeds air-flow do not flow to the both sides of refrigerating module.
In this step: for backflow situation, deflector structure should be optimized under the prerequisite meeting the engineering capabilities such as product manufacture, assembly technology during structural design optimization due to deflecting plate 1.During concrete enforcement, there are the parts such as air-conditioning duct, headlight wiring harness and mounting bracket due to front end, cabin, in order to ensure the normal function of these parts and assembling and the withdrawal space, deflecting plate 1 must be made to there is design gaps with it.But design gaps will directly affect the effect of deflecting plate 1, therefore actv. control must be carried out to it.
Preferably, gap f(deflecting plate 1 between deflecting plate 1 and refrigerating module 3 and the gap between the condenser 30 of refrigerating module 3 front end) be less than or equal to 10mm, this is that design value should be little as much as possible because the design gaps of deflecting plate 1 with refrigerating module 3 has the greatest impact to anti-backflow.
Further, the step S3 in the present embodiment comprises:
Step S31, is set to unanimously, to make the gap h between deflecting plate and grid even by the moulding radian of the edge radian dative grid of deflecting plate.
Step S32, when the opening of grid is larger, reduces the inclination angle of deflecting plate to reduce the air-flow being entered refrigerating module by grid; Or
Step S33, when grid opening is less or do not mate with refrigerating module, increases the inclination angle of deflecting plate to improve the air-flow being entered refrigerating module by grid; Wherein: the inclination angle of deflecting plate is the angle of deflecting plate and refrigerating module windward side.
The effect of above-mentioned steps is: be diversion function for what realize deflecting plate 1, needs to control the matching relationship of the angle of inclination beta of deflecting plate 1, deflecting plate 1 and grid 4.Owing to considering moulding factor when grid 4 designs, its opening size and position can not may mate completely with refrigerating module 3.The diversion Design of deflecting plate 1 makes can import refrigerating module 3 by grid 4 opening cooling-air flow exactly.Therefore, need the moulding radian according to grid 4, size and layout, adjustment deflecting plate angle of inclination beta.Wherein: the angle between the deflecting plate 1 that the angle of inclination beta of deflecting plate refers to and refrigerating module 3 windward side 3a.
Particularly, radian dative grid 4 moulding radian in deflecting plate 1 edge is consistent, to guarantee to mate gap uniformity, can keep airflow smooth; When grid 4 opening is larger, for optimizing car load aerodynamic performance, under the prerequisite meeting the requirement of refrigerating module air quantity, the angle of inclination beta that can reduce deflecting plate makes the air-flow being entered refrigerating module 3 by grid 4 reduce; When grid 4 opening is less or do not mate with refrigerating module 3, then can utilize the guide functions of deflecting plate 1, increase the angle of inclination beta of deflecting plate, improve cooling air quantity.
Preferred embodiment: step S3 also comprises:
Step S34, after the inclination angle of deflecting plate is determined, grid take deflecting plate as border until its edge partially enclosed, in order to reduce air resistance coefficient.
In enforcement, the cooling air quantity of refrigerating module 3 can be determined according to the requirement of cooling system.By the angle adjusting angle of inclination beta, cooling air quantity is met the demands.Generally for minimizing air resistance coefficient, after angle of inclination beta is determined according to cooling air quantity, grid 4 for border is closed to edge part branch, illustrates the region shown in part A in 3 with deflecting plate 1.
As shown in table 1 below, be the example that certain vehicle change of pitch angle affects cooling flow, as shown in Table 1, vehicle is under high-speed working condition, and the cooling-air flow entered from grid 4 is through the directional tagging of deflecting plate 1, and air-flow velocity improves, and the air quantity of refrigerating module increases; And under high-speed working condition, enter the directional tagging of air-flow by deflecting plate 1 of grid 4, be forced through refrigerating module 3, the effect reducing air resistance coefficient can be played.
Table 1-vehicle change of pitch angle is on the impact of cooling flow
Further, the step S4 in the present embodiment comprises:
Step S41, under the prerequisite meeting the requirement of refrigerating module air quantity, reduces the inclination angle of deflecting plate, in order to reduce the resistance because vehicle engine room inside causes, wherein: the inclination angle of deflecting plate is the angle of deflecting plate and refrigerating module windward side.By reducing angle of inclination beta as far as possible, closed lattice in this step, thus reducing the resistance because engine room inside causes, that is, reducing the positive pressure minimizing that deflecting plate angle of inclination beta can make to act on deflecting plate 1, thus reducing aerodynamic drag.
Step S42, reduce deflecting plate and and its parts that there is matching relationship between gap.At this moment because comparatively wide arc gap makes to there is leakage current in cabin, the follow-up as easy as rolling off a log air-flow developing into disorder of leakage current, causes aerodynamic drag to increase; Reducing design gaps can make high speed downstream as far as possible by refrigerating module, and does not flow to surrounding formation eddy current, and pneumatic internal resistance is reduced.
Same, as preferred embodiment: step S4 also comprises:
Step S43, fits deflecting plate and grid edge, and in order to make the air-flow being entered vehicle cabin by grid all flow through refrigerating module, in this step, deflecting plate 1 passes through refrigerating module 3 in order to forced draft; Or,
Step S44, deflecting plate matches with the perforate at fender guard place, vehicle cabin, in order to air-flow is guided out vehicle cabin.
The function of step S4 is: be optimized the layout of deflecting plate 1 and refrigerating module 3, thus realize the effect of the reduction aerodynamic drag of deflecting plate 1, mainly there is the inclination angle of gap between the parts of matching relationship and deflecting plate in it and structure is optimized to deflecting plate 1 and each, be essentially change compartment airflow flowing by adjusting above parameter, the object of rectification optimal design reduces aerodynamic drag.
By the deflecting plate of deflecting plate method of designing design in the present embodiment, the effect preventing hot gas re-flow under idling operation can be met, improve refrigerating module cooling air quantity, possess the effect reducing car load aerodynamic drag simultaneously.In addition, on this basis, also need to carry out detailed structure design to deflecting plate, as: manufacturing process, intensity, assembling etc.To guarantee that deflecting plate can meet design function.Following present the detailed construction of the deflecting plate by above-mentioned deflecting plate method of designing design.
Refer to Fig. 4, for the facade structures schematic diagram of embodiment of the present invention deflector structure, the lateral cross section of this deflecting plate designed through above-mentioned method of designing is L-type, deflecting plate be designed be not less than 3 ° draft angle, can the space structure of arrange mold cooling water channel and ejecting mechanism.
During enforcement, for meeting its intensity, non-air-flow face design reinforced rib 11 and increase characteristic face at the deflecting plate back side.Be designed with convolution interface arrangment 12 between upper chin spoiler 1, guarantee product strength, avoid producing excessive swing and vibrating noise because of air-flow.
Refer to shown in Fig. 5 and Fig. 6, for the main TV structure schematic diagram of embodiment of the present invention deflector structure, during enforcement, for satisfied assembling, deflecting plate is designed with location structure, in order to guarantee that its actual rigging position meets design requirement, this location structure comprises main knock hole 13a in diagram and auxiliary knock hole 13b.
Deflecting plate method of designing of the present invention and the deflector structure designed by this method of designing, have following beneficial effect:
The first, vehicle is under idling or speed operation, can be back on front side of front-end module from the hot air of vehicle engine compartments internal fan blowout, designed by the deflecting plate that goes out can block the path of air flow direction front-end module, the hot gas of backflow cannot be aspirated by fan.
The second, vehicle is under high-speed working condition, from the cooling-air flow that grid enters, goes out the directional tagging of deflecting plate, air-flow velocity is improved, adds the air quantity of refrigerating module designed by passing through.
Three, under high-speed working condition, the directional tagging of deflecting plate is gone out designed by the air-flow entering grid is subject to, be forced through refrigerating module, thus avoid to flow to from left and right sides and to form vortex on rear side of cabin and then increase pneumatic internal resistance, thus play the effect reducing air resistance coefficient.
Four, Stability Analysis of Structures, can avoid vibration noise; It is convenient to assemble, and is easy to control cost.
Claims (11)
1. a deflecting plate method of designing, is characterized in that, comprises the following steps:
Step S1, according to the moulding of vehicle cabin front grill and structure and refrigerating module and the deviation situation of described grid on forward projection position, determine the preliminary structure of deflecting plate, described preliminary structure at least comprises the form of deflecting plate, quantity and position, it comprises: step S11, adjust the structure of described deflecting plate according to the moulding of vehicle cabin front grill, make the extension of its described grid of more fitting; Step S12, when described grid is two air intake structures or the integral type cell sructure of upper and lower opening formula, adopts monolithic deflecting plate; Or step S13, when described grid is with the 3rd grid, according to the design goal of described 3rd grid, is confirmed whether to arrange deflecting plate;
Step S2, according to the airflow reflux path of vehicle under idling or speed operation in cabin, adjust described preliminary structure and determine the rigging position of described deflecting plate, in order to intercept the path of described airflow reflux, it comprises: step S21, described deflecting plate is located in cabin airflow reflux path intercepts air-flow, make air-flow go back to the front side of a front-end module that cannot be back to described refrigerating module along former flow path or be mounted with described refrigerating module;
Step S3, described deflecting plate is optimized, the cooling air quantity of described refrigerating module is made to meet the requirement of cooling system of vehicle, it comprises: step S31, the edge radian of described deflecting plate is set to consistent with the moulding radian of described grid, to make the gap uniformity between described deflecting plate and described grid;
Step S4, optimize the layout between described deflecting plate and described refrigerating module, to reduce the aerodynamic drag in vehicle cabin, it comprises: step S41, under the prerequisite meeting the requirement of described refrigerating module air quantity, reduce the inclination angle of described deflecting plate, in order to reduce the resistance because vehicle engine room inside causes, wherein: the inclination angle of described deflecting plate is the angle of described deflecting plate and described refrigerating module windward side.
2. deflecting plate method of designing as claimed in claim 1, it is characterized in that, described step S12 comprises: step S121, when two air intake structures that described grid is upper and lower opening formula, and between two grids without arrangement space time, corresponding described upper and lower two grid opening parts adopt two pieces of deflecting plates respectively.
3. deflecting plate method of designing as claimed in claim 1 or 2, it is characterized in that, described step S1 also comprises:
Step S14, when described refrigerating module and described grid exist the deviation in vertical ground direction on forward projection position, described deflecting plate is set to the structure of upper and lower water conservancy diversion; Or
Step S15, when described refrigerating module and described grid exist the deviation in direction, parallel ground on forward projection position, described deflecting plate is set to the structure of left and right water conservancy diversion;
Wherein: described forward projection position is be parallel to the plane on ground and the intersection direction in vehicle center face.
4. deflecting plate method of designing as claimed in claim 1 or 2, it is characterized in that, described step S2 also comprises:
Step S22, on the basis of guaranteeing vehicle cabin parts normal function and assembling and the withdrawal space, controls between described deflecting plate and described front-end module gap, in order to make vehicle at high speeds air-flow do not flow to the both sides of described refrigerating module.
5. deflecting plate method of designing as claimed in claim 1, it is characterized in that, the gap between described deflecting plate and described refrigerating module is less than or equal to 10mm.
6. deflecting plate method of designing as claimed in claim 1, it is characterized in that, described step S3 also comprises:
Step S32, when the opening of described grid is larger, reduces the inclination angle of described deflecting plate to reduce the air-flow being entered described refrigerating module by described grid; Or
Step S33, when described grid opening is less or do not mate with described refrigerating module, increases the inclination angle of described deflecting plate to improve the air-flow being entered described refrigerating module by described grid.
7. deflecting plate method of designing as claimed in claim 6, it is characterized in that, described step S3 also comprises:
Step S34, after the inclination angle of described deflecting plate is determined, described grid with described deflecting plate for border until its edge partially enclosed, in order to reduce air resistance coefficient.
8. deflecting plate method of designing as claimed in claim 1, it is characterized in that, described step S4 also comprises:
Step S42, reduce described deflecting plate and and its parts that there is matching relationship between gap.
9. deflecting plate method of designing as claimed in claim 8, it is characterized in that, described step S4 also comprises:
Step S43, fits described deflecting plate and described grid edge, all flows through described refrigerating module in order to make the air-flow being entered vehicle cabin by described grid; Or,
Step S44, described deflecting plate matches with the perforate at fender guard place, vehicle cabin, in order to air-flow is guided out vehicle cabin.
10. the deflector structure designed by the deflecting plate method of designing described in any one of claim 1-9, it is characterized in that, described deflecting plate comprises the draft angle arranging vehicle die waterway and ejecting mechanism, and described draft angle is more than or equal to 3 °.
11. deflector structures as claimed in claim 10, is characterized in that, at the non-air-flow face design reinforced rib at the described deflecting plate back side, and are provided with convolution clamping structure and location structure in the many places of described deflecting plate.
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| CN201310441504.2A CN104443072B (en) | 2013-09-25 | 2013-09-25 | A kind of deflector method for designing and the deflector structure designed by this method for designing |
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| CN201310441504.2A CN104443072B (en) | 2013-09-25 | 2013-09-25 | A kind of deflector method for designing and the deflector structure designed by this method for designing |
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| CN (1) | CN104443072B (en) |
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| CN106553711A (en) * | 2015-09-25 | 2017-04-05 | 通用汽车环球科技运作有限责任公司 | For controlling vehicle, the system and method for active air dynamic elements |
| CN106627410A (en) * | 2015-11-04 | 2017-05-10 | 福特全球技术公司 | Belly pan with aero covers |
| CN108162744A (en) * | 2017-12-26 | 2018-06-15 | 奇瑞商用车（安徽）有限公司 | A kind of refrigerating module wind deflector |
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| Publication number | Publication date |
|---|---|
| CN104443072B (en) | 2016-09-21 |
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