CN108361099A - A kind of electrical control electric fan control method, control device and the automobile of automobile - Google Patents
A kind of electrical control electric fan control method, control device and the automobile of automobile Download PDFInfo
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- CN108361099A CN108361099A CN201810469850.4A CN201810469850A CN108361099A CN 108361099 A CN108361099 A CN 108361099A CN 201810469850 A CN201810469850 A CN 201810469850A CN 108361099 A CN108361099 A CN 108361099A
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- Prior art keywords
- temperature
- electric fan
- urea
- engine
- treatment system
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Classifications
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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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2610/00—Adding substances to exhaust gases
- F01N2610/14—Arrangements for the supply of substances, e.g. conduits
- F01N2610/1486—Means to prevent the substance from freezing
-
- 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
- F01P2025/00—Measuring
- F01P2025/08—Temperature
-
- 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
- F01P2050/00—Applications
- F01P2050/22—Motor-cars
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Exhaust Gas After Treatment (AREA)
- Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
- Control Of Vehicle Engines Or Engines For Specific Uses (AREA)
Abstract
The invention discloses electrical control electric fan control method, control device and the automobiles of a kind of automobile.Automobile includes after-treatment system and engine, and control method includes：Detect the water temperature of the thawed state and engine of after-treatment system；According to the water temperature of the thawed state of after-treatment system and engine, determines the object run pattern of electrical control electric fan and control electrical control electric fan according to the work of object run pattern.The embodiment of the present invention, the control to electrical control electric fan according to the thawed state of after-treatment system may be implemented, the thawing rate for accelerating automobile after-treatment system under cold conditions, solves the problems, such as that vehicle after-treatment system thawing rate is slower when vehicle is in cold district.
Description
Technical field
The present embodiments relate to after-treatment system deforst technique more particularly to a kind of electrical control electric fan controlling parties of automobile
Method, control device and automobile.
Background technology
Urea box, urea pump in automobile after-treatment system etc. are easy to happen freezing phenomena in cold district.
Electrical control electric fan is widely used in the cooling system of automobile.The action of electrical control electric fan is to start on existing vehicle
Machine water temperature is as criterion, when engine electronic control unit detects that engine water temperature reaches preset temperature, control electricity
Fan action is controlled, and then promotes engine radiating.
However, when vehicle is in cold district, electrical control electric fan is controlled according to existing control method, after vehicle being caused
Processing system thawing rate is slower.
Invention content
The present invention provides a kind of electrical control electric fan control method, control device and the automobile of automobile, so that vehicle is in cold
The quick-thawing of after-treatment system may be implemented when regional.
In a first aspect, an embodiment of the present invention provides a kind of electrical control electric fan control method of automobile, automobile includes post-processing
System and engine, the control method include：
Detect the water temperature of the thawed state and engine of after-treatment system；
According to the water temperature of the thawed state of after-treatment system and engine, determines the object run pattern of electrical control electric fan and control
Electrical control electric fan processed works according to object run pattern.
Wherein, the operational mode of electrical control electric fan includes fan normal control mode and fan target gearing regime, and fan is just
Normal control model is that the start and stop state and rotating speed of electrical control electric fan are controlled according to the water temperature of engine, and fan target gearing regime is control
The rotating speed of electrical control electric fan processed is 0.
Wherein, according to the water temperature of the thawed state of after-treatment system and engine, the object run mould of electrical control electric fan is determined
Formula simultaneously controls electrical control electric fan according to the work of object run pattern, specifically includes：
If detecting, after-treatment system is in defrosting unfinished state and the water temperature of engine is less than first threshold temperature, control
Electrical control electric fan processed works according to fan target gearing regime；
If detecting, after-treatment system is in defrosting completion status and/or the water temperature of engine is more than or equal to the first threshold
It is worth temperature, control electrical control electric fan works according to fan normal control mode.
Wherein, fan normal control mode is the start and stop state and rotating speed that electrical control electric fan is controlled according to the water temperature of engine,
It specifically includes：
If detecting, the water temperature of engine is less than the first set water temperature, and control electrical control electric fan rotating speed is the first rotating speed；
If detecting, the water temperature of engine is greater than or equal to the first set water temperature and is less than the second set water temperature, and control is automatically controlled
Rotation speed of the fan is the second rotating speed；
If detecting, the water temperature of engine is greater than or equal to the second set water temperature, and control electrical control electric fan rotating speed turns for third
Speed.
Wherein, after-treatment system includes urea box, urea pump, urea pipette, urea liquid back pipe and urea pressure pipe, inspection
The thawed state of after logging process system includes：
If detecting, urea box temperature is more than or equal to urea box set temperature, and the temperature of urea pump is more than or equal to
The temperature of urea pump set temperature, urea pipette is more than or equal to urea pipette set temperature, the temperature of urea liquid back pipe
Degree is set more than or equal to the temperature of urea liquid back pipe set temperature and urea pressure pipe more than or equal to urea pressure pipe
Constant temperature degree, judgement after-treatment system are in defrosting completion status.
Second aspect, the embodiment of the present invention additionally provides a kind of electrical control electric fan control device of automobile, after automobile includes
Reason system and engine, the control device include：
Detection module, the water temperature of thawed state and engine for detecting after-treatment system；
Control module, for according to the thawed state of after-treatment system and the water temperature of engine, determining the mesh of electrical control electric fan
Mark operational mode simultaneously controls electrical control electric fan according to the work of object run pattern.
Wherein, the operational mode of electrical control electric fan includes fan normal control mode and fan target gearing regime, and fan is just
Normal control model is that the start and stop state and rotating speed of electrical control electric fan are controlled according to the water temperature of engine, and fan target gearing regime is control
The rotating speed of electrical control electric fan processed is 0.
Wherein, control module includes：
First control unit, for detect after-treatment system be in defrosting unfinished state and engine water temperature it is small
In first threshold temperature, control electrical control electric fan works according to fan target gearing regime；
Second control unit, for detecting that after-treatment system is in defrosting completion status and/or the water temperature of engine
More than or equal to first threshold temperature, control electrical control electric fan works according to fan normal control mode.
Wherein, control module is additionally operable to control electrical control electric fan when working according to normal control mode, if detecting engine
Cold water temperature is less than the first set water temperature, and control electrical control electric fan rotating speed is the first rotating speed, if detecting, the coolant-temperature gage of engine is big
In or equal to the first set water temperature and it is less than the second set water temperature, control electrical control electric fan rotating speed is the second rotating speed, detected hair
Motivation coolant temperature is greater than or equal to the second set water temperature, and control electrical control electric fan rotating speed is third rotating speed.
Wherein, after-treatment system includes urea box, urea pump, urea pipette, urea liquid back pipe and urea pressure pipe；
Detection module includes thawed state judging unit, if thawed state judging unit is used to detect the temperature of urea box
More than or equal to urea box set temperature, the temperature of urea pump is more than or equal to urea pump set temperature, urea pipette
Temperature be more than or equal to urea pipette set temperature, the temperature of urea liquid back pipe sets more than or equal to urea liquid back pipe
The temperature of constant temperature degree, urea pressure pipe is more than or equal to urea pressure pipe set temperature, and judgement after-treatment system, which is in, to thaw
Completion status.
The third aspect, the embodiment of the present invention additionally provide a kind of automobile, including：After-treatment system, engine and above-mentioned
The electrical control electric fan control device for the automobile that two aspects provide.
Wherein, which further includes：Electronic control unit, the electrical control electric fan control device of automobile are integrated in the electronics of automobile
In control unit.
An embodiment of the present invention provides electrical control electric fan control method, control device and the automobiles of automobile, after detection
The thawed state of reason system and the water temperature of engine；According to the water temperature of the thawed state of after-treatment system and engine, electricity is determined
It controls the object run pattern of fan and controls electrical control electric fan and work according to object run pattern.I.e. by the defrosting shape of after-treatment system
State as control electrical control electric fan one of the condition of operational mode, be no longer always according to engine water temperature come to electrical control electric fan into
Row control, may be implemented the control to electrical control electric fan according to the thawed state of after-treatment system.Such as it can be in after-treatment system
When not completing defrosting, control electrical control electric fan is inoperative, so that engine water temperature quickly increases, and then improves and leads to after-treatment system
Coolant liquid temperature, accelerate the thawing rate of automobile after-treatment system under cold conditions, solve when vehicle is in cold
Vehicle after-treatment system thawing rate slower problem when cryogenic region.
Description of the drawings
Fig. 1 is a kind of flow chart of the electrical control electric fan control method for automobile that the embodiment of the present invention one provides.
Fig. 2 is a kind of flow chart of the electrical control electric fan control method of automobile provided by Embodiment 2 of the present invention.
Fig. 3 is a kind of structural schematic diagram of the electrical control electric fan control device for automobile that the embodiment of the present invention three provides.
Fig. 4 is a kind of structural schematic diagram of the electrical control electric fan control device for automobile that the embodiment of the present invention four provides.
Fig. 5 is a kind of structural schematic diagram for automobile that the embodiment of the present invention five provides.
Specific implementation mode
The present invention is described in further detail with reference to the accompanying drawings and examples.It is understood that this place is retouched
The specific embodiment stated is used only for explaining the present invention rather than limitation of the invention.It also should be noted that in order to just
Only the parts related to the present invention are shown in description, attached drawing rather than entire infrastructure.
Embodiment one
Fig. 1 is a kind of flow chart of the electrical control electric fan control method for automobile that the embodiment of the present invention one provides, and automobile includes
After-treatment system and engine, the present embodiment are applicable to carry out control situation to electrical control electric fan when automobile is in cold district,
This method can be executed by the electrical control electric fan control device of automobile, which includes：
Step 110, detect after-treatment system thawed state and engine water temperature.
Wherein, the water temperature of engine refers to the temperature of engine coolant.
Specifically, automobile includes after-treatment system and engine, setting receiving coolant liquid in engine and after-treatment system
The cooling tube of circulation, coolant liquid are stored in engine water tank, engine coolant engine water tank, engine cool pipe and
It is circulated in after-treatment system cooling tube.After-treatment system includes urea box, is equipped with aqueous solution of urea in urea box, works as urine
Plain aqueous solution is solidified when environment temperature is about subzero 11 degrees Celsius, can not normal injection, therefore need to after-treatment system
It thaws.The defrosting medium of after-treatment system is generally engine coolant at present, so the thawing rate of after-treatment system
Actually determined by the temperature of the coolant liquid into urea box cooling tube, flow.And when the cooling liquid stream towards urea box
One timing of amount, the temperature of coolant liquid, i.e. engine water temperature become the determinant for influencing after-treatment system thawing rate.And it is automatically controlled
Fan belongs to the cooling system of vehicle, and starts mechatronics, when electrical control electric fan is run, will certainly reduce engine coolant
Temperature is unfavorable for the defrosting of after-treatment system.
In order to ensure the normal injection of after-treatment system urea, after the electrical control electric fan control device of automobile can detect in real time
The thawed state of reason system, and the water temperature of engine is detected in real time.
Step 120, according to the thawed state of after-treatment system and the water temperature of engine, determine the object run of electrical control electric fan
Pattern simultaneously controls electrical control electric fan according to the work of object run pattern.
Because existing control method is generally only to be controlled the rotating speed of electrical control electric fan according to engine water temperature, without considering
The thawed state of after-treatment system.When automobile is in cold conditions, in fact it could happen that engine water temperature is not very high feelings relatively
Under condition, that is, controlling electromagnetic fan has certain rotating speed, so that engine water temperature reduces, is passed through after-treatment system urea box
The temperature of coolant liquid decreases in cooling tube so that the thawing rate of after-treatment system is very slow.
Therefore, the automobile electrically-controlled control method for fan that the present embodiment proposes by the thawed state of after-treatment system also the most
One of control condition of electrical control electric fan, according to the thawed state and engine water temperature of after-treatment system, to determine electrical control electric fan
Operational mode so that the temperature towards coolant liquid in after-treatment system can be higher, and then accelerates the defrosting of after-treatment system
Speed.
Optionally, the operational mode of electrical control electric fan includes fan normal control mode and fan target gearing regime, fan
Normal control mode is the start and stop state and rotating speed that electrical control electric fan is controlled according to the water temperature of engine, and fan target gearing regime is
The rotating speed for controlling electrical control electric fan is 0.
Specifically, thawed state and engine of the electrical control electric fan control device of automobile according to the after-treatment system detected
Water temperature determine the object run pattern of electrical control electric fan.If the target that fan normal control mode is determined as to electrical control electric fan is transported
Row pattern, then it is identical with conventional control mode, the start and stop state and rotating speed of electrical control electric fan are directly controlled according to the water temperature of engine
；If fan target gearing regime to be determined as to the object run pattern of electrical control electric fan, the rotating speed for controlling electrical control electric fan is
0。
It illustratively, can if detect that post-processing solution system is in defrosting unfinished state and relatively low engine water temperature
Fan target gearing regime is determined as to the object run pattern of electrical control electric fan, that is, it is 0 to control electrical control electric fan rotating speed, so as to start
Machine water temperature can be promoted as early as possible, and then keep the engine coolant temperature into after-treatment system higher, enable after-treatment system
Enough quick-thawings, ensure urea liquid normal injection.When detecting that after-treatment system is in defrosting completion status, locate afterwards at this time
Fan normal control mode can be then determined as the object run mould of electrical control electric fan by reason system urea liquid with normal injection
Formula controls the start and stop state and rotating speed of electrical control electric fan according to the water temperature of engine.
The electrical control electric fan control method of automobile provided in an embodiment of the present invention, by the thawed state for detecting after-treatment system
With the water temperature of engine；According to the water temperature of the thawed state of after-treatment system and engine, the object run of electrical control electric fan is determined
Pattern simultaneously controls electrical control electric fan according to the work of object run pattern.I.e. using the thawed state of after-treatment system as the automatically controlled wind of control
One of condition of operational mode of fan is no longer to be controlled always electrical control electric fan according to engine water temperature, may be implemented
Control according to the thawed state of after-treatment system to electrical control electric fan.Such as can be when after-treatment system is not completed and thawed, control
Electrical control electric fan processed is inoperative, so that engine water temperature quickly increases, and then improves the temperature towards the coolant liquid of after-treatment system,
The thawing rate for accelerating automobile after-treatment system under cold conditions, solves when vehicle is in cold district after vehicle
The slower problem of reason system thawing rate.
Embodiment two
Fig. 2 is a kind of flow chart of the electrical control electric fan control method of automobile provided by Embodiment 2 of the present invention, the present embodiment
On the basis of the above embodiment 1, it is further provided a kind of electrical control electric fan control method of optional automobile.
Optionally, the step 120 provided in above-described embodiment one, according to the thawed state of after-treatment system and engine
Water temperature determines the object run pattern of electrical control electric fan and controls electrical control electric fan according to the work of object run pattern, specifically includes：
If step 121 detects that after-treatment system is in defrosting unfinished state and the water temperature of engine is less than the first threshold
It is worth temperature, control electrical control electric fan works according to fan target gearing regime；
If step 122 detects that after-treatment system is in defrosting completion status and/or the water temperature of engine is more than or waits
In first threshold temperature, control electrical control electric fan works according to fan normal control mode.
Optionally, first threshold temperature is the overheating protection temperature of engine water temperature.If engine water temperature is higher than the overheat
Temperature is protected, electrical control electric fan is needed to radiate engine, engine is otherwise easy to cause or vehicle hardware breaks down；If
Engine water temperature is less than the overheating protection temperature, and engine can work normally, to ensure that vehicle can be with normal operation.Therefore it is examining
When measuring after-treatment system and being in the water temperature of defrosting unfinished state and engine and be less than first threshold temperature, automatically controlled wind can control
Fan works according to target gearing regime, that is, the rotating speed for controlling electrical control electric fan is that 0 i.e. electrical control electric fan does not work, to ensure to send out
Motivation enables the water temperature of engine increase as early as possible under the premise of capable of working normally, and then makes to enter cooling in after-treatment system
The temperature of liquid is higher, accelerates the thawing rate of after-treatment system.
If detecting, after-treatment system is in defrosting completion status and/or the water temperature of engine is more than or equal to first
Threshold temperature, control electrical control electric fan work according to normal control mode.When being in defrosting completion status because of after-treatment system,
No longer engine coolant is needed to thaw it, therefore controls electrical control electric fan in the case of this kind and carried out according to normal control mode
Work only controls the start and stop state and rotating speed of electrical control electric fan according to engine water temperature.Be more than when the water level of engine or
Person be equal to first threshold temperature when, engine can not proper heat reduction then control electricity to engine so that vehicle brings security risk
Control fan works according to fan normal control mode, i.e., controls the start and stop state of electrical control electric fan according to engine water temperature and turn
Speed ensures engine proper heat reduction so that electrical control electric fan operates in time, and then makes engine water temperature reduce, and then ensures to start
Machine works normally.
Optionally, fan normal control mode is to control the start and stop state of electrical control electric fan according to the water temperature of engine and turn
Speed specifically includes：
If detecting, the water temperature of engine is less than the first set water temperature, and control electrical control electric fan rotating speed is the first rotating speed；
If detecting, the water temperature of engine is greater than or equal to the first set water temperature and is less than the second set water temperature, and control is automatically controlled
Rotation speed of the fan is the second rotating speed；
If detecting, the water temperature of engine is greater than or equal to the second set water temperature, and control electrical control electric fan rotating speed turns for third
Speed.
Wherein, existing third rotating speed is more than the second rotating speed, and the second rotating speed is more than the first rotating speed.The electricity being commonly provided on vehicle
Control fan is three-speed electromagnetic fan, which at work, is divided into three rotary regimes, such as above-mentioned first rotating speed shape
State, the second rotary regimes, third rotary regimes.Illustratively, the first set water temperature is 80 degree, and the second set water temperature is 90 degree,
Under fan normal control mode, when detecting that the water temperature of engine is less than 80 degree, control electrical control electric fan rotating speed is first turn
Speed.Optionally, the first rotating speed is 0 or close to 0.When detecting that the water temperature of engine is greater than or equal to 80 degree and less than 90 degree
When, it can determine that engine water temperature is slightly higher at this time, control electrical control electric fan rotating speed is the second rotating speed, such as the second rotating speed can be
1500r/min.When detect engine water temperature be greater than or equal to 90 degree, can determine that engine water temperature is excessively high, thus control it is automatically controlled
Rotation speed of the fan is third rotating speed.Such as third rotating speed can be 1800r/min.
Optionally, after-treatment system includes urea box, urea pump, urea pipette, urea liquid back pipe and urea pressure pipe,
Detection after-treatment system thawed state include：
If detecting, urea box temperature is more than or equal to urea box set temperature, and the temperature of urea pump is more than or equal to
The temperature of urea pump set temperature, urea pipette is more than or equal to urea pipette set temperature, the temperature of urea liquid back pipe
Degree is set more than or equal to the temperature of urea liquid back pipe set temperature and urea pressure pipe more than or equal to urea pressure pipe
Constant temperature degree, judgement after-treatment system are in defrosting completion status.
After-treatment system includes urea box, urea pump, urea pipette, urea liquid back pipe and urea pressure pipe, wherein urinating
Be connected to urea liquid back pipe by urea pipette between plain case and urea pump, further include nozzle in after-treatment system, for
Urea liquid is sprayed in exhaust passage, urea pressure pipe connects urea pump and urea nozzle.Because urea box, urea pump, urea are inhaled
Liquid pipe, urea liquid back pipe and urea pressure pipe have urea liquid circulation, therefore only when urea box, urea in after-treatment system
Pump, urea pipette, urea liquid back pipe and urea pressure pipe whole are thawed when completing, and just judge after-treatment system defrosting completion.
Optionally, urea box set temperature, urea pump set temperature, urea pipette set temperature, urea are preset
Liquid back pipe set temperature, urea pressure pipe set temperature, when detect urea box temperature be more than or equal to urea box setting temperature
The temperature of degree, urea pump is more than or equal to urea pump set temperature, and the temperature of urea pipette is inhaled more than or equal to urea
Liquid pipe set temperature, the temperature of urea liquid back pipe are more than or equal to urea liquid back pipe set temperature and urea pressure pipe
Temperature is more than or equal to urea pressure pipe set temperature, and judgement after-treatment system is in defrosting completion status.
It is further alternative, because urea box least be easy thaw, when detect urea box temperature be more than or equal to urea
When case set temperature, i.e., when urea box is completed to thaw, it can determine that after-treatment system thaws and complete.
The electrical control electric fan control method of the automobile of the offer of the present embodiment, by detecting after-treatment system in defrosting
The water temperature of unfinished state and engine is less than first threshold temperature, and control electrical control electric fan is carried out according to fan target gearing regime
Work；Detecting that after-treatment system is in the water temperature of defrosting completion status and/or engine and is more than or equal to first threshold
Temperature, control electrical control electric fan work according to fan normal control mode so that after-treatment system is in unfinished feelings of thawing
Under condition, engine water temperature can be made quickly to increase for 0 by controlling electrical control electric fan rotating speed, and then the solution for after-treatment system of deducting a percentage
Freeze speed；And make after-treatment system in the case where thawing completion, electrical control electric fan can be normal according to normal control mode
Work.
Embodiment three
Fig. 3 show the structural schematic diagram of the electrical control electric fan control device of the automobile of the offer of the embodiment of the present invention three, automobile
Including after-treatment system and engine, the present embodiment is applicable to carry out control feelings to electrical control electric fan when automobile is in cold district
Condition, the control device can perform the electrical control electric fan control method for the automobile that above-mentioned any embodiment provides, which includes：
Detection module 210, the water temperature of thawed state and engine for detecting after-treatment system；
Control module 220, for according to the thawed state of after-treatment system and the water temperature of engine, determining electrical control electric fan
Object run pattern simultaneously controls electrical control electric fan according to the work of object run pattern.
Optionally, the operational mode of electrical control electric fan includes fan normal control mode and fan target gearing regime, fan
Normal control mode is the start and stop state and rotating speed that electrical control electric fan is controlled according to the water temperature of engine, and fan target gearing regime is
The rotating speed for controlling electrical control electric fan is 0.
The electrical control electric fan control device of automobile provided in an embodiment of the present invention detects after-treatment system by detection module
The water temperature of thawed state and engine；And by control module according to the thawed state of after-treatment system and the water of engine
Temperature determines the object run pattern of electrical control electric fan and controls electrical control electric fan according to the work of object run pattern.It will post-process and be
The thawed state of system as control electrical control electric fan one of the condition of operational mode, be no longer always according to engine water temperature come pair
Electrical control electric fan is controlled, and the control to electrical control electric fan according to the thawed state of after-treatment system may be implemented.Such as it can be
When after-treatment system does not complete defrosting, control electrical control electric fan is inoperative, so that engine water temperature quickly increases, and then improves and leads to
The temperature of the coolant liquid of after-treatment system accelerates the thawing rate of automobile after-treatment system under cold conditions, solves and work as
Vehicle after-treatment system thawing rate slower problem when vehicle is in cold district.
Example IV
Fig. 3 show the structural schematic diagram of the electrical control electric fan control device of the automobile of the offer of the embodiment of the present invention three.This reality
It applies example to establish on the basis of above-described embodiment three, it is further provided a kind of optional electrical control electric fan control device.
Optionally, control module 220 includes：
First control unit 221, for detecting that after-treatment system is in the water of defrosting unfinished state and engine
Temperature is less than first threshold temperature, and control electrical control electric fan works according to fan target gearing regime；
Second control unit 222, for detecting that after-treatment system is in the water of defrosting completion status and/or engine
Temperature is more than or equal to first threshold temperature, and control electrical control electric fan works according to fan normal control mode.
Optionally, control module 220 is additionally operable to control electrical control electric fan when working according to normal control mode, if detecting hair
The cold water temperature of motivation is less than the first set water temperature, and control electrical control electric fan rotating speed is the first rotating speed, if detecting the water temperature of engine
Degree is more than or equal to the first set water temperature and is less than the second set water temperature, and control electrical control electric fan rotating speed is the second rotating speed, is detected
It is greater than or equal to the second set water temperature to engine coolant temperature, control electrical control electric fan rotating speed is third rotating speed.
Optionally, after-treatment system includes urea box, urea pump, urea pipette, urea liquid back pipe and urea pressure pipe；
Detection module 210 includes thawed state judging unit 211, if thawed state judging unit 211 is for detecting urine
The temperature of plain case is more than or equal to urea box set temperature, and the temperature of urea pump is more than or equal to urea pump set temperature,
The temperature of urea pipette is more than or equal to urea pipette set temperature, and the temperature of urea liquid back pipe is more than or equal to urine
The temperature of plain liquid back pipe set temperature, urea pressure pipe is more than or equal to urea pressure pipe set temperature, judgement post-processing system
System is in defrosting completion status.
The electrical control electric fan control device of the automobile of the offer of the present embodiment is detecting post-processing by the first control unit
System is in defrosting unfinished state and the water temperature of engine is less than first threshold temperature, and control electrical control electric fan is according to fan target
Gearing regime works；And by the second control unit detect after-treatment system be in defrosting completion status and/or
The water temperature of engine is more than or equal to first threshold temperature, and control electrical control electric fan carries out work according to fan normal control mode
Make so that after-treatment system thaw do not complete in the case of, engine water can be made by controlling electrical control electric fan rotating speed for 0
It is warm quickly to increase, and then the thawing rate for after-treatment system of deducting a percentage；And make after-treatment system in the case where thawing completion,
Electrical control electric fan can be worked normally according to normal control mode.
Embodiment five
Fig. 5 is a kind of structural schematic diagram for automobile that the embodiment of the present invention five provides.The automobile 200 includes：Post-processing system
The electrical control electric fan control device 100 for the automobile that system 20, engine 30 and any embodiment provide.
Wherein, which further includes：The electrical control electric fan control device 100 of electronic control unit 10, automobile is integrated in vapour
In the electronic control unit 10 of vehicle.
Automobile provided in an embodiment of the present invention detects the thawed state and engine of after-treatment system by detection module
Water temperature；And the mesh of electrical control electric fan is determined according to the thawed state of after-treatment system and the water temperature of engine by control module
Mark operational mode simultaneously controls electrical control electric fan according to the work of object run pattern.I.e. using the thawed state of after-treatment system as control
One of condition of operational mode of electrical control electric fan is no longer to be controlled always electrical control electric fan according to engine water temperature, can
To realize the control according to the thawed state of after-treatment system to electrical control electric fan.Such as it can not complete and thaw in after-treatment system
When, control electrical control electric fan is inoperative, so that engine water temperature quickly increases, and then improves towards the coolant liquid of after-treatment system
Temperature accelerates the thawing rate of automobile after-treatment system under cold conditions, solves the vehicle when vehicle is in cold district
The slower problem of after-treatment system thawing rate.
Note that above are only presently preferred embodiments of the present invention and institute's application technology principle.It will be appreciated by those skilled in the art that
The present invention is not limited to specific embodiments described here, can carry out for a person skilled in the art it is various it is apparent variation,
It readjusts and substitutes without departing from protection scope of the present invention.Therefore, although being carried out to the present invention by above example
It is described in further detail, but the present invention is not limited only to above example, without departing from the inventive concept, also
May include other more equivalent embodiments, and the scope of the present invention is determined by scope of the appended claims.
Claims (12)
1. a kind of electrical control electric fan control method of automobile, which is characterized in that the automobile includes after-treatment system and engine, institute
Stating control method includes：
Detect the water temperature of the thawed state and the engine of the after-treatment system；
According to the water temperature of the thawed state of the after-treatment system and the engine, the object run of the electrical control electric fan is determined
Pattern simultaneously controls the electrical control electric fan according to the work of object run pattern.
2. control method according to claim 1, which is characterized in that the operational mode of the electrical control electric fan include fan just
Normal control model and fan target gearing regime, the fan normal control mode is according to the water temperature of engine control institute
State the start and stop state and rotating speed of electrical control electric fan, the rotating speed of the fan target gearing regime electrical control electric fan in order to control is 0.
3. control method according to claim 2, which is characterized in that the thawed state according to the after-treatment system
With the water temperature of the engine, determines the object run pattern of the electrical control electric fan and control the electrical control electric fan and transported according to target
Row pattern works, and specifically includes：
If detecting, the after-treatment system is in defrosting unfinished state and the water temperature of the engine is less than first threshold temperature
Degree, controls the electrical control electric fan and works according to the fan target gearing regime；
If detecting, the after-treatment system is in defrosting completion status and/or the water temperature of the engine is more than or equal to institute
First threshold temperature is stated, the electrical control electric fan is controlled and works according to the fan normal control mode.
4. control method according to claim 2, which is characterized in that the fan normal control mode is according to the hair
The water temperature of motivation controls the start and stop state and rotating speed of the electrical control electric fan, specifically includes：
If detecting, the water temperature of the engine is less than the first set water temperature, and it is the first rotating speed to control the electrical control electric fan rotating speed；
If detecting, the water temperature of the engine is greater than or equal to the first set water temperature and is less than the second set water temperature, described in control
Electrical control electric fan rotating speed is the second rotating speed；
If detecting, the water temperature of the engine is greater than or equal to the second set water temperature, and it is third to control the electrical control electric fan rotating speed
Rotating speed.
5. control method according to claim 2, which is characterized in that the after-treatment system include urea box, urea pump,
Urea pipette, urea liquid back pipe and urea pressure pipe, the thawed state for detecting the after-treatment system include：
If detect the urea box temperature be more than or equal to urea box set temperature, the temperature of the urea pump be more than or
Equal to urea pump set temperature, the temperature of the urea pipette is more than or equal to urea pipette set temperature, the urine
The temperature of plain liquid back pipe be more than or equal to urea liquid back pipe set temperature and the urea pressure pipe temperature be more than or
Equal to urea pressure pipe set temperature, judge that the after-treatment system is in defrosting completion status.
6. a kind of electrical control electric fan control device of automobile, which is characterized in that the automobile includes after-treatment system and engine, institute
Stating control device includes：
Detection module, the water temperature of thawed state and the engine for detecting the after-treatment system；
Control module is used for the water temperature of the thawed state and the engine according to the after-treatment system, determines described automatically controlled
The object run pattern of fan simultaneously controls the electrical control electric fan according to the work of object run pattern.
7. control device according to claim 6, which is characterized in that the operational mode of the electrical control electric fan include fan just
Normal control model and fan target gearing regime, the fan normal control mode is according to the water temperature of engine control institute
State the start and stop state and rotating speed of electrical control electric fan, the rotating speed of the fan target gearing regime electrical control electric fan in order to control is 0.
8. control device according to claim 7, which is characterized in that the control module includes：
First control unit, for detecting that the after-treatment system is in the water of defrosting unfinished state and the engine
Temperature is less than first threshold temperature, controls the electrical control electric fan and works according to the fan target gearing regime；
Second control unit, for detecting that the after-treatment system is in defrosting completion status and/or the engine
Water temperature is more than or equal to the first threshold temperature, controls the electrical control electric fan and is carried out according to the fan normal control mode
Work.
9. control device according to claim 7, which is characterized in that the control module is additionally operable to control the automatically controlled wind
Fan is according to the normal control mode when work, if detecting the cold water temperature of engine less than the first set water temperature, described in control
Electrical control electric fan rotating speed is the first rotating speed, if detecting, the coolant-temperature gage of the engine is greater than or equal to the first set water temperature and is less than
Second set water temperature, it is the second rotating speed to control the electrical control electric fan rotating speed, and the detected engine coolant temperature is more than
Or it is equal to the second set water temperature, it is third rotating speed to control the electrical control electric fan rotating speed.
10. control device according to claim 7, which is characterized in that the after-treatment system includes urea box, urea
Pump, urea pipette, urea liquid back pipe and urea pressure pipe；
The detection module includes thawed state judging unit, if the thawed state judging unit is for detecting the urea
The temperature of case is more than or equal to urea box set temperature, and the temperature of the urea pump is more than or equal to urea pump setting temperature
The temperature of degree, the urea pipette is more than or equal to urea pipette set temperature, and the temperature of the urea liquid back pipe is big
In or equal to urea liquid back pipe set temperature, the temperature of the urea pressure pipe is more than or equal to urea pressure pipe setting temperature
Degree, judges that the after-treatment system is in defrosting completion status.
11. a kind of automobile, which is characterized in that including：After-treatment system, engine and such as claim 6-10 any one of them
The electrical control electric fan control device of automobile.
12. automobile according to claim 11, which is characterized in that further include：Electronic control unit, the automobile it is automatically controlled
Fan control device is integrated in the electronic control unit of the automobile.
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| CN201810469850.4A CN108361099B (en) | 2018-05-16 | 2018-05-16 | Electric control fan control method and device of automobile and automobile |
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| CN108361099B (en) | 2020-08-21 |
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