CN107120170A - A kind of fan guard and its control method for cooling module of engine - Google Patents
A kind of fan guard and its control method for cooling module of engine Download PDFInfo
- Publication number
- CN107120170A CN107120170A CN201710431888.8A CN201710431888A CN107120170A CN 107120170 A CN107120170 A CN 107120170A CN 201710431888 A CN201710431888 A CN 201710431888A CN 107120170 A CN107120170 A CN 107120170A
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- Prior art keywords
- cooling
- flow
- fan guard
- grid
- fan
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P5/00—Pumping cooling-air or liquid coolants
- F01P5/02—Pumping cooling-air; Arrangements of cooling-air pumps, e.g. fans or blowers
- F01P5/06—Guiding or ducting air to, or from, ducted fans
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P7/00—Controlling of coolant flow
- F01P7/02—Controlling of coolant flow the coolant being cooling-air
- F01P7/04—Controlling of coolant flow the coolant being cooling-air by varying pump speed, e.g. by changing pump-drive gear ratio
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P7/00—Controlling of coolant flow
- F01P7/02—Controlling of coolant flow the coolant being cooling-air
- F01P7/10—Controlling of coolant flow the coolant being cooling-air by throttling amount of air flowing through liquid-to-air heat exchangers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P5/00—Pumping cooling-air or liquid coolants
- F01P5/02—Pumping cooling-air; Arrangements of cooling-air pumps, e.g. fans or blowers
- F01P5/04—Pump-driving arrangements
- F01P2005/046—Pump-driving arrangements with electrical pump drive
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Air-Conditioning For Vehicles (AREA)
Abstract
The present invention relates to a kind of fan guard and its control method for cooling module of engine, fan guard includes fan guard main body, the cooling fan ventilating opening being opened in fan guard main body, grid ventilating opening and controller, multiple active grid components being electrically connected with the controller respectively are provided with grid ventilating opening side by side, controller controls the openings of sizes of grid ventilating opening by active grid component；According to automobile actual travel situation, cooling air-flow flow needed for calculating refrigerating module and actual cooling air-flow flow, and cooling fan rotation speed and active grid component aperture are controlled by controller, meet cooling air-flow traffic requirement.Compared with prior art, the present invention controls the openings of sizes of grid ventilating opening on fan guard by active grid component, to change cooling air-flow circulation area, realize the real-time control to cooling air-flow flow in cooling module of engine, and cooling fan rotation speed can be made minimum, it is energy-saving, improve the NVH performances of vehicle.
Description
Technical field
The invention belongs to automotive front end component technology field, be related to a kind of fan guard for cooling module of engine and its
Control method.
Background technology
Automotive front end part generally includes front-end architecture part, head lamp modules and refrigerating module three parts, wherein, front end knot
Component, refrigerating module are all the parts that material impact is produced to gas flowing in enging cabin.Automotive front end grid is a kind of weight
The front-end architecture part wanted, it plays guiding air draught and enters enging cabin, while the effect of the cooling-parts such as radiator is protected,
Automotive front end grid has important influence for the distribution of automotive front end air inlet effect, air mass and in-car flow field.It is cold
But module mainly includes condenser, radiator, cooling fan etc., wherein, cooling fan is to be used to agitate in automobile cooling module
In-car air recycling, enhancing heat exchanger exchange capability of heat, the part for accelerating coolant cooling, pressure, the work of cooling fan
The ability to work of cooling system is directly influenced as efficiency.These parts all play an important role to engine and air-conditioning heat exchange
Part.In traditional refrigerating module, cooling fan is placed on after radiator by custom, and the arrangement that several parts are flowed by air is suitable
Sequence is followed successively by condenser, radiator and cooling fan.
In recent years, China's development of automobile industry is swift and violent, country's wanting in terms of fuel economy, emission level to automobile
More and more higher is sought, while consumer in terms of automotive performance and comfortableness to also increasingly paying attention to.Cooling fan is related to cooling
The ability of system, is an indispensable part in automotive front end refrigerating module, but cooling fan is energy expenditure on automobile again
One of larger part, meanwhile, the high speed rotation of cooling fan also brings along noise problem, influences the NVH performances of vehicle.
In vehicle travel process, it is ensured that engine work, which is accomplished by refrigerating module, enough cooling air-flow stream
Amount.The source of cooling air-flow can be divided into two parts：1st, what is obtained in vehicle travel process due to the relative motion with air is cold
But air-flow, the cooling air-flow referred to as obtained under ram effect；2nd, because cooling fan is done work, force air stream supercooling module and
The cooling air-flow obtained under the cooling air-flow of acquisition, referred to as swabbing effect.Generally, in order to improve the efficiency of cooling fan, it can exist
Increase a closed case, i.e. fan guard between cooling fan and radiator.Fan guard be for swabbing effect it is beneficial,
Under identical cooling fan rotation speed, fan guard can increase the cooling air-flow flow under swabbing effect.But fan guard can subtract simultaneously
Cooling air-flow circulation area under small ram effect, increases circulating resistance, reduces cooling air-flow flow.
At present, fan guard used in automotive front end refrigerating module is typically that closing is fixed, fan guard aperture area without
Method changes.Passive type opening grid is used on some fan guards, this grid can only could be by air-flow top under certain speed
Open, and the time of grid opening and openings of sizes are uncontrollable, it is impossible to meet actual cooling air-flow traffic demand.
The content of the invention
It is an object of the present invention to overcome the above-mentioned drawbacks of the prior art and provide one kind can change automatically
Cooling air-flow flow and the energy-saving fan guard and its control method for cooling module of engine in refrigerating module.
The purpose of the present invention can be achieved through the following technical solutions：
A kind of fan guard for cooling module of engine, the fan guard is located between cooling fan and radiator, described
Fan guard include fan guard main body, be opened in fan guard main body and be adapted with cooling fan cooling fan ventilating opening,
Be opened in grid ventilating opening and controller in fan guard main body, described grid ventilating opening side by side provided with it is multiple respectively with
The active grid component of controller electrical connection, described controller controls the opening of grid ventilating opening big by active grid component
It is small.Cooling fan ventilating opening and grid ventilating opening are opened in fan guard main body side by side.According to automobile actual travel situation, pass through
Controller automatically controls the aperture of active grid component, and then adjusts the openings of sizes of grid ventilating opening, to meet cooling air-flow
Traffic demand.
Described active grid component includes the rotating shaft being rotatably arranged in grid ventilating opening, the grid being arranged in rotating shaft
Plate and the rotating shaft stepper motor being connected with rotating shaft transmission, the rotating shaft stepper motor are electrically connected with the controller.Controller control turns
Shaft step motor is rotated, and drives flase floor to rotate by rotating shaft, to adjust the aperture of flase floor.When the aperture of flase floor is 0 °
When, grid ventilating opening is closed；When the aperture of flase floor is 90 °, grid ventilating opening is opened completely.
The length of described grid ventilating opening is 300-310mm, and width is 90-110mm.By rationally setting grid to divulge information
The size of mouth, makes fan guard to meet daily air-conditioning requirement, self-strength will not be made too low again.
As preferred technical scheme, the length of described grid ventilating opening is 305mm, and width is 100mm.
A kind of control method of fan guard for cooling module of engine, this method specifically includes following steps：
1) according to automobile actual travel situation, cooling air-flow flow Q1 needed for calculating refrigerating module and actual cooling air-flow
Flow Q2；
2) Q is worked as1-Q2During ＜ 0, cooling fan rotation speed n is reduced by controller, makes Q2=Q1；
Work as Q1-Q2During ＞ 0, active grid component aperture is increased by controllerMake Q2=Q1。
Work as Q1-Q2During ＜ 0, show that actual cooling air-flow flow is excessive, Q can be made by reducing cooling fan rotation speed n2=
Q1, because cooling fan rotation speed n reduces, thus the noise that cooling fan rotates generation is reduced simultaneously, improve the NVH of vehicle
Performance；Work as Q1-Q2During ＞ 0, show that actual cooling air-flow flow is too small, by increasing active grid component apertureIncrease is actual
Cooling air-flow flow, realizes the Q under minimum cooling fan rotation speed n2=Q1, cooling air-flow traffic requirement had both been met, had been reduced again
Cooling fan rotation speed n and energy consumption, and avoid producing extra noise.
Step 1) in, according to environment temperature T0, engine cooling water leaving water temperature TCAnd water flow QC, calculate Q1。
According to automobile practical structures and travel situations, conventional heat transfer calculation formula, such as plate type heat exchanger or shell-and-tube heat exchanger meter are utilized
Calculate formula, you can obtain Q1；Also Q can be gone out by experimental data induction and conclusion1With environment temperature T0, engine cooling water water outlet
Temperature TCAnd water flow QCBetween corresponding relation.
Step 1) in, according to automobile speed V, cooling fan rotation speed n and active grid component apertureCalculate Q2。Q2With
Automobile speed V, cooling fan rotation speed n, active grid component apertureBetween corresponding relation can conclude total by experimental data
Knot.In the case of known to automobile speed V, active grid component aperture when cooling fan rotation speed n is minimum can be drawnPass through
Controller adjusts the openings of sizes of grid ventilating opening, and reduces rotation speed of the fan, and real-time ensuring is before cooling air-flow flow is enough
Put cooling fan rotation speed n minimum.
Step 2) in, work as Q1-Q2During ＜ 0, cooling fan rotation speed n and active grid component aperture are reduced by controller
Make Q2=Q1.If cooling fan rotation speed n is decreased into 0, Q is not met yet2=Q1, will pass through reduction active grid component aperture
Further reduce actual cooling air-flow flow Q2, make Q2=Q1。
Step 2) in, work as Q1-Q2During ＞ 0, active grid component aperture is increased by controllerAnd cooling fan rotation speed n,
Make Q2=Q1.If active grid component apertureWhen increasing to 90 °, Q is not met yet2=Q1, will pass through increase cooling fan rotation speed n
Further improve actual cooling air-flow flow Q2, make Q2=Q1。
The present invention adjusts the actual circulation area of cooling air-flow by the active grid component on active control fan guard,
Under the minimum control method of cooling fan rotation speed, it is ensured that there is enough cooling air-flow flows, so as to reduce in refrigerating module
The energy that cooling fan is consumed is to reduce oil consumption, while the reduction of cooling fan rotation speed is also improved rotates institute by cooling fan
The noise problem of generation.
Compared with prior art, the invention has the characteristics that：
1) active grid component is set in fan guard main body, and controller controls lattice on fan guard by active grid component
The openings of sizes of grid ventilating opening, changes cooling air-flow circulation area, realizes to cooling air-flow flow in cooling module of engine
Control in real time, to meet actual cooling air-flow traffic demand；
2) using the minimum control method of cooling fan rotation speed, by the cooperation of active grid component and cooling fan, full
In the case of cooling air-flow flow needed for sufficient refrigerating module, make cooling fan rotation speed minimum, during delay chilling fan intervention work
Between, complete-vehicle oil consumption can not only be effectively reduced, and the noise problem brought by cooling fan is improved, improve the NVH of vehicle
Energy.
Brief description of the drawings
Fig. 1 is the overall structure diagram of fan guard in embodiment 1；
Fig. 2 is the schematic flow sheet of control method in embodiment 1；
It is cold under different cooling fan rotation speeds, active grid component aperture when Fig. 3 is different automobile speed in embodiment 1
But air flow rate isogram；
When Fig. 4 is speed 110kph in embodiment 1, automobile radiators inflow temperature or cooling fan rotation speed and cooling air-flow
The change curve of flow；
When Fig. 5 is speed 110kph in embodiment 1, the change curve of cooling fan rotation speed and cooling fan power；
Fig. 6 is the change curve of in-car heel row noise and cooling fan rotation speed in embodiment 1.
Description of symbols in figure：
1-fan guard main body, 2-cooling fan ventilating opening, 3-grid ventilating opening, 4-rotating shaft, 5-flase floor.
Embodiment
The present invention is described in detail with specific embodiment below in conjunction with the accompanying drawings.The present embodiment is with technical solution of the present invention
Premised on implemented, give detailed embodiment and specific operating process, but protection scope of the present invention is not limited to
Following embodiments.
Embodiment 1：
A kind of fan guard for cooling module of engine as shown in Figure 1, the fan guard is located at cooling fan and radiating
Between device, the cooling fan that fan guard includes fan guard main body 1, is opened in fan guard main body 1 and is adapted with cooling fan
3 points are provided with ventilating opening 2, the grid ventilating opening 3 being opened in fan guard main body 1 and controller, grid ventilating opening 3 side by side
The active grid component not being electrically connected with the controller, controller controls the opening of grid ventilating opening 3 big by active grid component
It is small.
Wherein, active grid component is venetian blind type structure, and active grid component includes being rotatably arranged on grid ventilating opening 3
Interior rotating shaft 4, the flase floor 5 being arranged in rotating shaft 4 and the rotating shaft stepper motor being connected with rotating shaft 4, the rotating shaft stepping
Motor is electrically connected with the controller.The length of grid ventilating opening 3 is 305mm, and width is 100mm.
A kind of control method of fan guard for cooling module of engine as shown in Figure 2, this method specifically include with
Lower step：
1) according to automobile actual travel situation, cooling air-flow flow Q needed for calculating refrigerating module1And actual cooling air-flow
Flow Q2；
2) Q is worked as1-Q2During ＜ 0, cooling fan rotation speed n is reduced by controller, makes Q2=Q1；
Work as Q1-Q2During ＞ 0, active grid component aperture is increased by controllerMake Q2=Q1。
Step 1) in, according to environment temperature T0, engine cooling water leaving water temperature TCAnd water flow QC, calculate Q1；
According to automobile speed V, cooling fan rotation speed n and active grid component apertureCalculate Q2。
Step 2) in, work as Q1-Q2During ＜ 0, cooling fan rotation speed n and active grid component aperture are reduced by controller
Make Q2=Q1；Work as Q1-Q2During ＞ 0, active grid component aperture is increased by controllerAnd cooling fan rotation speed n, make Q2=Q1。
To the automobile in normal driving process, pass through monitoring of environmental temperature T0, the leaving water temperature T of engine cooling waterCWith go out
Water-carrying capacity QC, cooling air-flow flow Q needed for the refrigerating module under present engine load can be calculated1.It can be returned by experimental data
Receive and sum up different vehicle velocity Vs, cooling fan rotation speed n and active grid component apertureUnder actual cooling air-flow flow Q2.Using
Cooling fan rotation speed minimum control method, if Q1-Q2＜ 0, illustrates that actual cooling air-flow flow is excessive, now can be according to Q2With V,
n、Relation, by controller reduce cooling fan rotation speed n, to realize the Q under minimum cooling fan rotation speed n2=Q1；If Q1-
Q2＞ 0, illustrates that actual cooling air-flow flow is less than normal, now can be according to Q2With V, n,Relation, pass through controller increase active lattice
Grid component apertureTo realize the Q under minimum cooling fan rotation speed n2=Q1。
In Fig. 3, abscissa is cooling fan rotation speed n, and ordinate is active grid component apertureA certain car as shown in Figure 3
Under speed, different cooling fan rotation speed n and active grid component apertureUnder cooling air-flow flow.According to cooling fan rotation speed most
Small control strategy, needed for can very easily finding out the cooling air-flow flow of a certain fixation from cooling air-flow flow isogram
The minimum cooling fan rotation speed n wanted and corresponding active grid component apertureFor example in vehicle velocity V=110kph, if cooling mould
Cooling air-flow flow Q needed for block1For 48m3/ min (at white line), then when active grid component is closed (or without actively on fan guard
During grid component), it is necessary to which cooling fan rotation speed n is 1000RPM；When active grid component opens 90 ° (full-gear), cooling
Fan can be without work.
In Fig. 4, curve A be active grid component it is fully closed when, radiator inlet temperature with cooling air-flow flow changing curve,
There are three points to mark the cooling fan rotation speed n corresponding to cooling air-flow flow on curve.Curve B is active grid component apertureFor 26 ° when, cooling air-flow flow is with cooling fan rotation speed n change curves.The intersection point of two curves shows, when active grid group
Part apertureFor 26 °, the cooling air-flow flow and active grid component when cooling fan rotation speed n is 1360RPM are fully closed, cool down wind
It is identical when fanning rotating speed n for 1830RPM, i.e., in the case where ensureing identical cooling air-flow flow condition, active grid component aperture
When being set to 26 °, cooling fan rotation speed n can reduce 470RPM.
As shown in Figure 5, when cooling fan rotation speed n is reduced to 1360RPM by 1830RPM, cooling fan power can be reduced
59W。
Relevant data display, when ambient noise 40dB (A) below when, people know from experience feel more comfortable, more than the value just
For hazardous noise.It will be appreciated from fig. 6 that when cooling fan rotation speed n is more than 2000RPM, internal car noise alreadys exceed 40dB (A), therefore
The noise on human body influence that cooling fan is produced at high speed is more obvious, and reduction cooling fan rotation speed n can improve crew module
Comfortableness.
Embodiment 2：
In the present embodiment, side by side provided with 2 active grid components being electrically connected with the controller respectively in grid ventilating opening 3,
The length of grid ventilating opening 3 is 300mm, and width is 110mm, remaining be the same as Example 1.
Embodiment 3：
In the present embodiment, side by side provided with 5 active grid components being electrically connected with the controller respectively in grid ventilating opening 3,
The length of grid ventilating opening 3 is 310mm, and width is 90mm, remaining be the same as Example 1.
The above-mentioned description to embodiment is understood that for ease of those skilled in the art and using invention.
Person skilled in the art obviously can easily make various modifications to these embodiments, and described herein general
Principle is applied in other embodiment without passing through performing creative labour.Therefore, the invention is not restricted to above-described embodiment, ability
Field technique personnel are according to the announcement of the present invention, and not departing from improvement and modification that scope made all should be the present invention's
Within protection domain.
Claims (9)
1. a kind of fan guard for cooling module of engine, the fan guard is located between cooling fan and radiator, its feature
It is, described fan guard includes fan guard main body (1), is opened in what is be adapted in fan guard main body (1) and with cooling fan
Cooling fan ventilating opening (2), the grid ventilating opening (3) being opened in fan guard main body (1) and controller, described grid lead to
Multiple active grid components being electrically connected with the controller respectively are provided with air port (3) side by side, described controller passes through active lattice
The openings of sizes of grid component control grid ventilating opening (3).
2. a kind of fan guard for cooling module of engine according to claim 1, it is characterised in that described active
Rotating shaft (4) that grid component includes being rotatably arranged in grid ventilating opening (3), the flase floor (5) that is arranged in rotating shaft (4) and
The rotating shaft stepper motor being connected with rotating shaft (4), the rotating shaft stepper motor is electrically connected with the controller.
3. a kind of fan guard for cooling module of engine according to claim 1, it is characterised in that described grid
The length of ventilating opening (3) is 300-310mm, and width is 90-110mm.
4. a kind of fan guard for cooling module of engine according to claim 3, it is characterised in that described grid
The length of ventilating opening (3) is 305mm, and width is 100mm.
5. a kind of control method of fan guard for cooling module of engine as described in any one of Claims 1-4, it is special
Levy and be, this method specifically includes following steps：
1) according to automobile actual travel situation, cooling air-flow flow Q needed for calculating refrigerating module1And actual cooling air-flow flow
Q2；
2) Q is worked as1-Q2During ＜ 0, cooling fan rotation speed n is reduced by controller, makes Q2=Q1；
Work as Q1-Q2During ＞ 0, active grid component aperture is increased by controllerMake Q2=Q1。
6. a kind of control method of fan guard for cooling module of engine according to claim 5, it is characterised in that
Step 1) in, according to environment temperature T0, engine cooling water leaving water temperature TCAnd water flow QC, calculate Q1。
7. a kind of control method of fan guard for cooling module of engine according to claim 5, it is characterised in that
Step 1) in, according to automobile speed V, cooling fan rotation speed n and active grid component apertureCalculate Q2。
8. a kind of control method of fan guard for cooling module of engine according to claim 5, it is characterised in that
Step 2) in, work as Q1-Q2During ＜ 0, cooling fan rotation speed n and active grid component aperture are reduced by controllerMake Q2=Q1。
9. a kind of control method of fan guard for cooling module of engine according to claim 5, it is characterised in that
Step 2) in, work as Q1-Q2During ＞ 0, active grid component aperture is increased by controllerAnd cooling fan rotation speed n, make Q2=Q1。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710431888.8A CN107120170A (en) | 2017-06-09 | 2017-06-09 | A kind of fan guard and its control method for cooling module of engine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710431888.8A CN107120170A (en) | 2017-06-09 | 2017-06-09 | A kind of fan guard and its control method for cooling module of engine |
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| CN107120170A true CN107120170A (en) | 2017-09-01 |
Family
ID=59730441
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| CN201710431888.8A Pending CN107120170A (en) | 2017-06-09 | 2017-06-09 | A kind of fan guard and its control method for cooling module of engine |
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Cited By (2)
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| WO2022166500A1 (en) * | 2021-02-05 | 2022-08-11 | 长城汽车股份有限公司 | Vehicle heat dissipation method, storage medium, and vehicle |
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| CN114645765A (en) * | 2022-03-16 | 2022-06-21 | 江铃汽车股份有限公司 | NVH (noise, vibration and harshness) comprehensive experiment bench device and method for silicone oil clutch fan |
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Application publication date: 20170901 |