CN105673183B - Liquid level automatic detection and power control unit - Google Patents
Liquid level automatic detection and power control unit Download PDFInfo
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- CN105673183B CN105673183B CN201610168158.9A CN201610168158A CN105673183B CN 105673183 B CN105673183 B CN 105673183B CN 201610168158 A CN201610168158 A CN 201610168158A CN 105673183 B CN105673183 B CN 105673183B
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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
- F01P11/00—Component parts, details, or accessories not provided for in, or of interest apart from, groups F01P1/00 - F01P9/00
- F01P11/14—Indicating devices; Other safety devices
- F01P11/18—Indicating devices; Other safety devices concerning coolant pressure, coolant flow, or liquid-coolant level
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- Combustion & Propulsion (AREA)
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- General Engineering & Computer Science (AREA)
- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
Abstract
The invention discloses a kind of liquid level automatic detection and power control unit; belong to detection and control technology field; the device can check the liquid level of coolant in water-cooling type cooling system automatically before vehicle launch; the step of reducing hand inspection coolant; shorten vehicle line haul hour, the starting protection power set of engine are limited in the case where coolant lacks；During use after vehicle start-up, the liquid level of coolant is detected in real time, and whether automatic decision coolant is sufficient；Photoacoustic signal can be sent when coolant leaks to a certain extent in cooling system to driver；If coolant continues to leak into bottom line in cooling system, engine auto extinguishing is can control, protection actuating unit is not damaged by.The device includes liquid level automatic detection sensing device, power control unit, simple for structure, practical function, easily implements on armored vehicle, easy to use.
Description
Technical field
The invention belongs to detect and control technology field, be related to the automatic detection of cooling liquid measure and power set start before with
Operating control, the device can be used for water-cooling type cooling system vehicle.
Background technology
During vehicle its engine (internal combustion engine) work, the mixed combustion gas temperature of combustion chamber is up to 1730 to 2400 DEG C,
It can raise the temperature of the heated parts such as its cylinder, cylinder head and the valve that contact, mechanical strength reduces, in some instances it may even be possible to occurs
Thermal deformation, the fit clearance destroyed between part, causes part strong wear, when serious, it is also possible to part breaking accident occurs.
High temperature not only can also cause cylinder wall machine oil to go bad, and be allowed to lose lubricating function, or even coking；High temperature, which even can also cause, to be started
Machine volumetric efficiency declines, and makes the reduction of its power.
Hot stall caused by engine temperature is too high, vehicle can be caused to lose the job ability, directly affect the work of vehicle
Reliability, economy and durability.Therefore, to avoid causing hot stall because temperature is too high, in current vehicle propulsion system
All generally equipped with a water-cooling type closed cooling system.The cooling system is driven by water pump, flowed through using water or liquid as medium
After the water jacket of the heated components such as cylinder sleeve, cylinder cap and the valve seating of engine and heat absorption, liquid temperature rise；Coolant flows into distribute again
After device, the absorbed heat of release, liquid temperature is reduced to the level before heat absorption, is then return to pump intake；So go round and begin again,
Form the water circulation of cooling system；In engine and transmission device under Operation Conditions, the heat that heated component is conducted exists
It is dispersed into time in surrounding environment in various different temperatures environment, engine and transmission device is neither overheated only cold,
It is set to obtain reliable and effective thermal condition.
The whether sufficient not only relation dampening cooling system of coolant plays its heat radiation function, or even is related to vehicle operation energy
Power, functional reliability, economy and durability etc..Water cooling system as the system pressure needed for steam valve holding system, its
Coolant has evaporation.Therefore the whether sufficient key for turning into vehicle routine use and safeguarding of coolant in water cooling system is checked.At present
The method that the routine use of vehicle visually inspects water by driver in safeguarding in vehicle launch front opening water tank：Vehicle is needing
When checking coolant, the 1st step need to find filler cap, and the dismounting of the 2nd step is fixed 1 article of the bolt of filler cap and come loose other 1 article
Bolt, the 3rd step disassemble filler cap with specific purpose tool, and the 4th step visually observes coolant total amount in water tank, and the 5th step, which is loaded onto, tears open
The filler cap laid down, the installation of the 6th step and the tightening and loosening bolt fallen and the bolt to come loose.Above-mentioned traditional approach checks cooling system
The time that the step of middle coolant spends was at 10 to 15 minutes.
The method that coolant is checked before this vehicle launch, not only consume what manpower and energy were repeated second after second
Work, and to vehicle, mobile operations are made a discount at any time, in some instances it may even be possible to cause to fight because checking that coolant is bungled the chance of winning a battle
Failure.This method for making precombat check cooling night, mainly by the subjective experience of driver, can temporarily judge coolant
Amount is extremely inconvenient.
It is such a by engine water jacket, water pump, water radiator, fan (dress containing transmission for vehicle after vehicle launch
Put), cooling air channel and respective line composition bulky systems for, this inspection before vehicle launch, can not exclude completely cold
But it whether there is leak source in being, caused a hidden trouble to the use of vehicle upon actuation.After vehicle start-up, because the vibration of vehicle is difficult
Exempt to fasten pipeline or joint looseness, vehicle cooling system internal temperature and pressure rise, coolant or fast or slowly let out may be caused
Leakage, thus driver to pay close attention at any time the water temperature of the actuating unit in instrument board, oil temperature come judge cooling system whether mistake
Whether heat, coolant are sufficient.When finding water temperature, oil overheating, coolant often largely leaks, and even causes and starts sometimes
The damage of machine or transmission device.Operating personnel are thus needed to spend great effort to go to pay close attention to actuating unit in use
Water temperature, oil temperature are extremely inconvenient.
In addition, because operating personnel are not by cumbersome operational procedure operation or carelessness during working service, to vehicle
Inspection not in time and supplement coolant, in the case where coolant lacks in vehicle launch, using vehicle, cause power and
The damage of transmission device.
The content of the invention
Present invention solves the technical problem that there is provided a kind of liquid level automatic detection and power control unit, user of service can
By the present apparatus, to check the cooling liquid measure in water-cooling type cooling system automatically before vehicle launch, reduce hand inspection coolant
The step of；Before vehicle launch, the actuating unit (including engine) of limitation missing coolant starts, and it is protected；Car
After starting, the cooling liquid measure of actuating unit is monitored in real time, and whether automatic decision coolant is sufficient；Leaked in coolant
When to a certain extent, photoacoustic signal can be sent to driver；When coolant continues to leak into bottom line, can be sent out to driver
Go out photoacoustic signal while control engine misses, protect actuating unit.This kind of liquid level automatic detection and power control unit
The time of current check coolant is greatly saved, shortens fighting machine vehicle line haul hour, improves mobility response energy
Power；At utmost more effectively automatic protection power set, improve the survival ability of vehicle.
The technical scheme is that：A kind of liquid level automatic detection and power control unit, it is characterised in that the device bag
Liquid level automatic detection sensing device, power control unit are included, liquid level automatic detection sensing device is by electric signal interface, coolant water
Case installation mechanical interface, detection sensing device composition；Detection sensing device includes liquid level upper limit proximity switch and the liquid level upper limit is floated
Limited in son, liquid level and float, liquid level lower limit proximity switch and liquid level lower limit float are limited in proximity switch and liquid level；Electric signal interface three
Individual signal input part connects respectively limits proximity switch, the direct current of liquid level lower limit proximity switch in liquid level upper limit proximity switch, liquid level
Voltage output end；Three signal output parts of electric signal interface are three output ends of liquid level automatic detection sensing device；Float contacts
During proximity switch, proximity switch output end exports d. c. voltage signal, and the electric signal interface signal being connected with the proximity switch is defeated
Go out end output d. c. voltage signal；Float includes limiting float, liquid level lower limit float in liquid level upper limit float, liquid level；Proximity switch
Including limiting proximity switch and liquid level lower limit proximity switch in liquid level upper limit proximity switch, liquid level；With liquid level upper limit proximity switch, liquid
Proximity switch and liquid level lower limit proximity switch are limited in position and about represents liquid level automatic detection biography respectively in the horizontal plane of sustained height
The upper limit determined as desired of induction device, middle limit, lower limit；Liquid level automatic detection sensing device three approaches with the liquid level upper limit to be opened
Close, limit proximity switch is referred to as upper line output terminal, middle limit output with the output end that liquid level lower limit proximity switch connects in liquid level
End, lower limit output end；Power control unit includes coolant liquid level judge module, liquid level automatic detection sensing device electric signal connects
Mouth, fuel oil break-make solenoid valve control electric signal interface；Three output ends of liquid level automatic detection sensing device do not have DC voltage
During signal output, coolant liquid level judge module exports the first signal, the output of liquid level automatic detection sensing device lower limit output end
During d. c. voltage signal, coolant liquid level judge module output secondary signal；In liquid level automatic detection sensing device limit output end,
When lower limit output end has exported d. c. voltage signal respectively, coolant liquid level judge module exports the 3rd signal；Liquid level is examined automatically
When survey sensing device upper limit output end, middle limit output end, lower limit output end export d. c. voltage signal respectively, coolant liquid level is sentenced
Disconnected module exports the 4th signal；When coolant liquid level judge module exports the first signal, secondary signal, if vehicle is not actuated,
Coolant liquid level judge module controls fuel path oil-break, and limitation actuating unit starts；If vehicle launch, coolant liquid level
Judge module sends acoustic alarm by buzzer siren control module；When coolant liquid level judge module exports three signals,
Coolant liquid level judge module controls fuel path fuel feeding by fuel oil break-make solenoid valve control electric signal interface, passes through buzzing report
Alert device control module sends acoustic alarm；When coolant liquid level judge module exports four signals, coolant liquid level judge module
Fuel path fuel feeding is controlled by fuel oil break-make solenoid valve control electric signal interface.
Preferably, when coolant liquid level judge module exports the first signal；If vehicle launch, coolant liquid level judge module
By showing liquid level " sky " by alarm display module, by externally alarming, electric signal interface notifies vehicle alarm device to send
Sound and light alarm；When coolant liquid level judge module exports secondary signal；If vehicle launch, coolant liquid level judge module passes through
By alarm display module show liquid level " under ", by externally alarm electric signal interface notify vehicle alarm device send acousto-optic
Alarm；When coolant liquid level judge module exports three signals, coolant liquid level judge module passes through alarm display module
Display liquid level " in ", by externally alarm electric signal interface notify vehicle alarm device send sound and light alarm；When coolant liquid level
Judge module export four signals when, coolant liquid level judge module by alarm display module show liquid level " on ".
Preferably, power control unit also includes：Power interface, liquid level automatic detection sensing device electric signal interface, combustion
Oily break-make solenoid valve control electric signal interface, externally alarm electric signal interface, actuating unit start control electric signal interface,
Alarm display module.
Preferably, the d. c. voltage signal of three output end outputs of liquid level automatic detection sensing device is+24 volt direct currents
Press signal.
Liquid level automatic detection sensing device, power control unit, power control unit and power transmission are filled by cable
Put fuel solenoid valve connection, liquid level automatic detection sensing device in cooling system cooling liquid measure carry out in real time monitoring,
Under coolant deletion condition, the startup and shutdown of signal control actuating unit occur for power control unit.
Real time automatic detection coolant fluid level condition.Fluid level condition is indicated, acousto-optic instruction is sent to liquid level miss status very
To sound and light alarm, the startup started is limited in the case where lacking fluid conditions；Missing coolant is detected in power set operating
Under state, automatically controlled engine stops working.The liquid level of automatic detection cooling system, then limit power set and cool down liquid in missing
Startup and control power set (engine) under state are in operation process because of auto extinguishing under missing fluid conditions.
The solution have the advantages that：
1st, composition is simple in construction, liquid level automatic detection sensing device is arranged on the water tank of cooling system.It is always electric in vehicle
After source switch is connected, the total amount of power control unit real time automatic detection coolant is utilized.Avoid operator and dismantle filler
The hand inspection step of lid, substantially reduces detection time, improves the response time of vehicle.
2nd, there is the function of limitation vehicle launch.Operating personnel's abuse is avoided, because neglecting to vehicle not in time
Inspection and coolant lack in the case of, in violation of rules and regulations power and transmission device caused by startup vehicle damage.
3rd, just have after vehicle launch in detection cooling system in real time and cool down the function of liquid measure, and there is sound and light alarm and allow power
The flame-out function of device, avoids the damage of the power set caused by a variety of causes is lacked by coolant.
4th, reliability is high, is widely applied, and can detect coolant total amount on vehicle with fast and easy.And avoid because each
Kind reason hot stall as caused by lacking coolant, and cause the damage of power set.Provide convenience, improve for operator
Fighting machine is fought the response time, is avoided the waste of manpower, is effectively prevented unnecessary loss.By cooling system coolant
It is changed into checking automatically after vehicle is powered from artificial detection, detection time can be shortened within 5 seconds, ring fighting machine operation
Shorten between seasonable.
Brief description of the drawings
Fig. 1 a liquid levels automatic detections and power control unit application electrical schematics.
Fig. 1 b liquid levels automatic detections and power control unit application principle schematic diagram.
Fig. 2 a are the structure principle chart of liquid level automatic detection sensing device.
Fig. 2 b are the structure sectional view of liquid level automatic detection sensing device..
Fig. 2 c are Fig. 2 b B-B direction schematic diagram.
Fig. 2 d are Fig. 2 b A-A to schematic diagram.
Fig. 3 is liquid level automatic detection sensing device principle schematic.
Liquid level automatic detection and power control unit workflow diagram before Fig. 4 a startups.
Liquid level automatic detection and power control unit workflow diagram after Fig. 4 b startups.
Fig. 5 power control unit theory of constitution figures.
Wherein, 1. liquid level automatic detection sensing device, 2. power control units, 3. starting-motor of engine, 4. fuel oils electricity
Magnet valve, 5. power supplys, 6 D.C. contactors, 7. power distribution equipments, 8. instrument board controlling switches, 9. electric signal interfaces, 10. electric signals connect
Mouth installing plate, 11. cable connectors, 12. mounting-fixing bases, 13. outer tubes, 14. times liquid level fixing pipes, 15. inner sleeves, 16.
Proximity switch, 17. floats, 18. fixing pipe fixed seats, liquid level fixing pipe on 19., liquid level fixing pipe in 20., 21 coolant water
Case installs mechanical interface, 22 detection sensing devices
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention will be described in detail.
The liquid level automatic detection and power control unit of the present invention, including：Liquid level automatic detection sensing device, dynamic Control
Device.
The application in the way of such as Fig. 1 a-b of the invention, installation liquid level automatic detection sensing device in water-cooling type cooling system,
Power control unit is disposed about in vehicle driver, (or is utilized in engine fuel input port installation fuel oil break-make magnetic valve
The fuel oil break-make magnetic valve of engine itself installation), then pass through cable connection power supply, power distribution equipment, engine by Fig. 1 a-b
Start electric motor starting control relay, the electric alarms based on pattern recognition (or warning device) of vehicle itself, the power switch on instrument board.
As shown in Figure 2 a：Liquid level automatic detection sensing device installs mechanical interface by electric signal interface 9, coolant water tank
21st, detection sensing device 22 forms, and detection sensing device 22 is included in liquid level upper limit proximity switch and liquid level upper limit float, liquid level
Limit and float, liquid level lower limit proximity switch and liquid level lower limit float are limited in proximity switch and liquid level.
9 three signal input parts of electric signal interface connect respectively limits proximity switch, liquid in liquid level upper limit proximity switch, liquid level
+ 24 volt DC voltage output ends of position lower limit proximity switch；Three signal output parts of electric signal interface pass for liquid level automatic detection
Three output ends of induction device.
When float contacts proximity switch, proximity switch output end exports+24 volt d. c. voltage signals, electric signal interface three
Signal output part exports+24 volt d. c. voltage signals；Connect and proximity switch and liquid level lower limit are limited in liquid level upper limit proximity switch, liquid level
Proximity switch uses foregoing same principle proximity switch (being referred to as proximity switch)；In liquid level upper limit float, liquid level limit float,
Liquid level lower limit float uses the float of foregoing same principle, respectively positioned at encapsulating in respective cylindrical drum, positioned at respective corresponding
Proximity switch under.
Sensing device is detected also including three dress envelope floats, the cylindrical drums of proximity switch in encapsulation cylinder, encapsulation cylinder；Liquid level
The horizontal plane that proximity switch and liquid level lower limit proximity switch sustained height are limited in upper limit proximity switch, liquid level represents liquid level certainly respectively
The upper limit of dynamic detection sensing device, middle limit (the minimum usage amount of coolant, determining as needed), lower limit (it is minimum to be less than coolant
Usage amount, vehicle should not be started, can determined as needed).
Liquid level automatic detection sensing device is installed, the encapsulation cylinder for detecting sensing device is located at coolant in water-cooling type cooling system
In, coolant water tank installation mechanical interface is fixed on water tank, according to the position of proximity switch and coolant normal use amount (on
Limit) determine setting height(from bottom).
Three output ends of liquid level automatic detection sensing device are respectively lower limit output end, middle limit output end, upper line output terminal.
As shown in Figure 3：The operation principle of liquid level automatic detection sensing device is：
When power control unit is powered to liquid level automatic detection sensing device, when the liquid level in coolant water tank is in down
When spacing following, liquid level lower limit float is not approached with lower limit proximity switch, and sensing is limited in liquid level upper limit sensing proximity switch, liquid level
Proximity switch, liquid level lower limit pass proximity switch and do not produce+24 volt d. c. voltage signals；When the liquid level in coolant water tank is in down
It is spacing and its above, in it is spacing following when, liquid level lower limit float and lower limit proximity switch are close, float is limited in liquid level not with middle limit
Proximity switch approaches, and lower limit proximity switch is close to produce+24 volt direct current (bottom limit level) voltage signals；When in coolant water tank
More than liquid level is spacing in being in, below upper limit when, lower limit float and lower limit proximity switch are close, middle limit float and middle limit are close
Switch is close, upper limit float does not approach with lower limit proximity switch, and middle limit proximity switch is close, lower limit proximity switch is close same respectively
When produce+24 volt direct currents (in, bottom limit level two) voltage signal；When the liquid level in coolant water tank is in more than upper limit,
Lower limit float approaches with lower limit proximity switch, middle limit float limits close proximity switch, upper limit float and lower limit proximity switch with middle
It is close, lower limit proximity switch is close, middle limit proximity switch is close, lower limit proximity switch close to produce simultaneously on+24 volt direct currents,
In, 3 voltage signals of bottom limit level.
Shown in Fig. 4 a, liquid level automatic detection and power control unit workflow diagram before startup；Shown in Fig. 4 b, after startup
Liquid level automatic detection and power control unit workflow diagram.
After the unlatching of vehicle total power switch, vehicle power distribution unit is powered by power interface to power control unit, together
When power control unit give liquid level automatic detection sensing device power supply；Liquid level automatic detection sensing device sends level sensing letter
Number；Power control unit limits signal according to coolant upper, middle and lower, sends corresponding alarm and control signal；During the liquid level upper limit, control
Fuel oil processed continues to detect after continuing fuel feeding；In liquid level in limited time, control fuel oil continues fuel feeding and continues to detect after sending alarm signal；
During liquid level lower limit, control fuel oil continues oil-break and continues to detect after sending alarm signal.The liquid measure of real-time coolant is so circulated,
And the supply of control fuel oil.Corresponding indicator lamp, buzzer siren and the control signal of output on power control unit, prompt behaviour
Make personnel, automotive occupant, the fuel limit engine start for controlling power set and control engine misses, avoid vehicle because cold
But the damage of the power set caused by the generation of liquid missing caused by hot stall.
As shown in figure 5, power control unit includes：Power interface, coolant liquid level judge module, liquid level automatic detection pass
Induction device electric signal interface, fuel oil break-make solenoid valve control electric signal interface, externally alarm electric signal interface, actuating unit
Start control electric signal interface, alarm display module, buzzer siren control module, buzzer siren.
Vehicle power distribution unit is powered by power interface to power control unit, while power control unit is automatic to liquid level
Detect sensing device power supply；
Three output ends of liquid level automatic detection sensing device do not have the output of+24 volt d. c. voltage signals, coolant liquid level
Judge module exports the first signal,
Liquid level automatic detection sensing device lower limit output end exports+24 volt d. c. voltage signals, and coolant liquid level judges mould
Block exports secondary signal；
Limit output end, lower limit output end have exported+24 volt d. c. voltage signals respectively in liquid level automatic detection sensing device,
Coolant liquid level judge module exports the 3rd signal；
Liquid level automatic detection sensing device upper limit output end, middle limit output end, that lower limit output end exports+24 volts respectively is straight
Voltage signal is flowed, coolant liquid level judge module exports the 4th signal；
When coolant liquid level judge module exports the first signal, secondary signal, if vehicle is not actuated, coolant liquid level is sentenced
Disconnected module control fuel path oil-break, limitation actuating unit start；If vehicle launch, coolant liquid level judge module passes through
Buzzer siren control module send acoustic alarm, by alarm display module show liquid level " sky " or " under ", by externally reporting
Alert electric signal interface notice vehicle alarm device sends sound and light alarm；
When coolant liquid level judge module exports three signals, coolant liquid level judge module passes through fuel oil break-make electromagnetism
Valve control electric signal interface control fuel path fuel feeding, sends acoustic alarm by buzzer siren control module, passes through alarm
Display module show liquid level " in ", by externally alarm electric signal interface notify vehicle alarm device send sound and light alarm；
When coolant liquid level judge module exports four signals, coolant liquid level judge module passes through fuel oil break-make electromagnetism
Valve control electric signal interface control fuel path fuel feeding, by alarm display module show liquid level " on ".
The present invention operation principle be：
When vehicle connects general supply, vehicle power distribution unit is powered by power interface to power control unit, is moved simultaneously
Force control device is powered to liquid level automatic detection sensing device；When the liquid level of coolant water tank is in below lower limit, liquid level
All output ends of automatic detection sensing device do not have the output of+24 volt d. c. voltage signals, the coolant liquid of power control unit
Position judge module automatic decision liquid level is " sky "；Before vehicle launch, controlled by fuel oil break-make solenoid valve control electric signal interface
Fuel path oil-break, limitation actuating unit start；After vehicle launch, pass through fuel oil break-make solenoid valve control electric signal interface
Fuel path oil-break is controlled, acoustic alarm is sent by buzzer siren control module, liquid level is shown by alarm display module
" sky ", by externally alarming, electric signal interface notifies vehicle alarm device to send sound and light alarm；
When the liquid level in coolant water tank be in more than lower limit or lower limit, in it is spacing following when, liquid level automatic detection
Sensing device lower limit output end exports+24 volt d. c. voltage signals, and the coolant liquid level judge module of power control unit is automatic
Judge liquid level for " lower limit "；Before vehicle launch, by fuel oil break-make solenoid valve control electric signal interface control fuel path oil-break,
Power set are limited to start；After vehicle launch, by fuel oil break-make solenoid valve control electric signal interface control fuel path oil-break,
By buzzer siren control module send acoustic alarm, by alarm display module show liquid level " under ", by externally alarming
Electric signal interface notice vehicle alarm device sends sound and light alarm；
When it is spacing during the liquid level in coolant water tank is in or in it is spacing more than, below upper limit when, liquid level automatic detection
Output end is limited in sensing device, lower limit output end has exported+24 volt d. c. voltage signals, the coolant of power control unit respectively
Liquid level judge module automatic decision liquid level is " middle limit ", and vehicle launch is front and rear to pass through fuel oil break-make solenoid valve control electric signal interface
Fuel path fuel feeding is controlled, acoustic alarm is sent by buzzer siren control module, liquid level is shown by alarm display module
" in ", by externally alarm electric signal interface notify vehicle alarm device send sound and light alarm；
When the liquid level in coolant water tank is in more than reach the standard grade position or upper limit, the liquid level automatic detection sensing device upper limit
Output end, middle limit output end, lower limit output end export+24 volt d. c. voltage signals, the coolant liquid of power control unit respectively
Position judge module automatic decision liquid level is " upper limit ", and vehicle launch is front and rear to pass through fuel oil break-make solenoid valve control electric signal interface control
Fuel path fuel feeding processed, by alarm display module show liquid level " on ".
The alarm display module of power control unit liquid level " sky " " under " " in " " on " corresponding four indicator lamps, actively
The liquid level of coolant in ground detection cooling system；Prompting light and audible alarm can also be sent to occupant on one's own initiative.
Liquid level automatic detection and power control unit used in the present invention, specific works state are as follows：
1st, daily routine inspection
Operating personnel need to only open the vehicle total power switch in instrument board, just before vehicle launch in operation
Using four indicator lamps on alarm display module only have one light when state, mark come judge liquid measure " sky ", " under
One of limit ", " in " and " upper limit " these four states.
When " alarm opens switch " is in "On" state on power control unit, cooling liquid measure exists in cooling system
When " sky ", " lower limit " and " middle limit ", buzzer and horn for vehicle can sound automatically on power control unit；Work as power control unit
When upper " alarm opens switch " is in "Off" state, when " sky " and " lower limit ", buzzer and vehicle loudspeaker on power control unit
Can sound automatically, but alarm can stop sound in the case of " middle limit ".Meanwhile " sky " and " lower limit " instruction etc. can also dodge
It is bright.Until cooling also adds to " middle limit " above alarm device and can just stop sound, instruction can just stop flashing.And it can cool down
In the case of system's missing coolant, automatically vehicle motor is forbidden to start.Operating personnel's abuse is avoided, because of carelessness
In the case of being lacked to vehicle inspection not in time and coolant, the damage of an actuating unit caused by startup vehicle.
2nd, the Detection ＆ Controling after vehicle launch
Vehicle upon actuation, because the athletic meeting of various vehicle components produces vibration, will produce fastener loosening, pipeline connects
Head loosens and the possibility of damage of components, so as to cause coolant to be lost in.The power that driver will pay close attention in instrument board at any time passes
The oil temperature and water temperature of dynamic device judge whether cooling system overheats, and when finding their temperature overheating, coolant is often a large amount of
Leakage, the damage of engine or transmission device is even caused sometimes.Liquid level automatic detection has automatic with power control unit
The function of detection cooling liquid measure, can be by detecting its situation in real time, and can pass through control and indicator lamp on acoustic-optic alarm
Check liquid level.When " alarm open switch " be in "On" state on power control unit, in cooling system cooling liquid measure " sky ",
When " lower limit " and " middle limit ", buzzer and horn for vehicle can sound automatically on power control unit；When " report on power control unit
Alert device opens switch " when being in "Off" state, when " sky " and " lower limit ", buzzer and horn for vehicle can on power control unit
Automatically sound, but alarm can stop sound in the case of " middle limit ".Meanwhile in the case of " sky " and " lower limit " instruction flicker, can
Make engine misses by controlling fuel solenoid valve to cut off the oil circuit of fuel oil, avoid the damage of power set.
The present invention can check the liquid level of coolant in water-cooling type cooling system automatically before vehicle launch, reduce hand inspection
The step of coolant, shorten battlebus vehicle line haul hour, the starting protection power dress of engine is limited in the case where coolant lacks
Put；During use after vehicle start-up, the liquid level of coolant is detected in real time, and whether automatic decision coolant is sufficient；
Photoacoustic signal can be sent when coolant leaks to a certain extent in cooling system to driver；If coolant continues to leak in cooling system
During to bottom line, engine auto extinguishing is can control, protection actuating unit is not damaged by.
According to water-cooling type cooling system vehicle it is daily make one with safeguard demand, it is necessary to detect in real time in its cooling water system
The total amount of coolant, coolant missing it is a certain amount of when under automatic alarm, continue leakage when arrive minimum flow while and also
Startup with limitation engine allows the ability of engine auto extinguishing.The device can avoid because coolant missing and caused by
Internal combustion engine part because temperature it is too high, the caused ablation or fusing of body parts, the intensity of deformation and material or hard
Degree declines, or even hot stall caused by the destruction etc. of lubricating oil film.The device can use on all vehicles, and its principle can be with
It is transplanted on the internal combustion engine with water cooling system, protects its power set.The level sensing and power control unit principle with
It is simple for structure, practical function, easily implement on vehicle, it is easy to use, and can solve the automatic detection of coolant total amount, and
The startup of limit engine and internal combustion engine auto extinguishing, protect power set.Suitable for so vehicle, or even suitable for water
On the internal combustion engine of cooling system.
The concrete structure of liquid level automatic detection sensing device is described further below.
As shown in Fig. 2 b, 2c, 2d, liquid level automatic detection sensing device, by electric signal interface 9, electric signal interface installing plate
10th, cable connector 11, mounting-fixing base 12, outer tube 13, inner sleeve 15, proximity switch 16, float 17, fixing pipe fixed seat
18th, upper liquid level fixing pipe 19, middle liquid level fixing pipe 20, lower liquid level fixing pipe 14 form.
Electric signal interface 9 is installed on electric signal interface installing plate 10.
Five ports are connected to five ports of cable connector 11 correspondingly with wire respectively on telecommunication interface 9
On.Five port two of which of cable connector 11 are power end, respectively with three conductor in parallel the liquid level upper limit, it is middle limit,
(power positive end is using three wires in parallel connect three positive poles, power cathode end is adopted on the positive and negative electrode of lower limit proximity switch
Three negative poles are connected with three wires in parallel)；Its excess-three port of cable connector 11 is signal input part, is connected respectively
The liquid level upper limit, it is middle limit, lower limit proximity switch (being referred to as proximity switch 16)+24 volt DC output ends.Electric signal interface 9 three
Individual signal output part is three output ends of liquid level automatic detection sensing device.
Electric signal interface installing plate 10 is fixed on mounting-fixing base 12.
Outer tube 13, upper liquid level fixing pipe 19, middle liquid level fixing pipe 20, the initiating terminal of lower liquid level fixing pipe 14 are both connected to
On mounting-fixing base 12.The upper limit is installed in upper liquid level fixing pipe 19, middle liquid level fixing pipe 20, the end of lower liquid level fixing pipe 14 respectively
Proximity switch, middle limit proximity switch, lower limit proximity switch.
There are three groups (every group 3) on outer tube 13 according to high pair of through hole for determining position of three kinds of liquid levels, can make in sleeve pipe
Pressure is identical with pipe external pressure, and makes in the smooth sleeve pipe of liquid, and float 17 lifts in the height direction according to liquid level.
Three inner sleeves 15 are set in liquid level fixing pipe 19, middle liquid level fixing pipe 20, outside lower liquid level fixing pipe 14,
Initiating terminal is both connected on mounting-fixing base 12, is inside also equipped with a float 17 respectively, and the other end is connected pipe fixed seat 18.
There are three pairs on the tube wall of three inner sleeves 15 respectively according to the high through hole for determining position of three kinds of liquid levels, the pressure in sleeve pipe can be made
It is identical with pipe external pressure, and make in the smooth sleeve pipe of liquid, float 17 lifts in the height direction according to liquid level.
Fixing pipe fixed seat 18 is connected on the end and outer tube 13 of three inner sleeves 15, and inner sleeve 15, upper liquid level are consolidated
Fixed tube 19, middle liquid level fixing pipe 20, lower liquid level fixing pipe 14, proximity switch 16, float 17 are encapsulated in liquid level automatic detection sensing
In device.There are three through holes determined according to inner sleeve link position (to generally correspond to each inner sleeve in fixing pipe fixed seat 18
At axis), three through holes are liquid access way.
When the outer liquid level of liquid level automatic detection sensing device changes, in inner sleeve 15, outer tube 13 and fixing pipe fixed seat 18
Through hole, formed liquid level automatic detection sensing device sleeve pipe inner and outer air pressure identical water channel.In liquid level automatic detection sensing device
Water level and outside it is contour, the buoyancy following water-level lifting of float itself.When float 17 contacts proximity switch 16, proximity switch 16 is defeated
Go out+24 volt d. c. voltage signals of end output, 9 three signal output parts of electric signal interface export+24 volt d. c. voltage signals.
Liquid level upper limit proximity switch abbreviation upper limit proximity switch, limit in proximity switch abbreviation in liquid level and limit proximity switch, liquid
Position lower limit proximity switch abbreviation lower limit proximity switch.Proximity switch 16 include liquid level upper limit proximity switch, it is middle limit proximity switch, under
Limit proximity switch.Float 17 includes limiting float (limiting float in abbreviation), liquid in liquid level upper limit float (abbreviation upper limit float), liquid level
Position lower limit float (abbreviation lower limit float), upper limit float, it is middle limit float, lower limit float respectively positioned at upper liquid level fixing pipe 19, in
Liquid level fixing pipe 20,14 sets of lower liquid level fixing pipe inner sleeve in, respectively positioned at upper limit proximity switch, it is middle limit proximity switch,
Under lower limit proximity switch.
Certainly, the present invention can also have other various embodiments, ripe in the case of without departing substantially from spirit of the invention and its essence
Various corresponding changes and deformation ought can be made according to the present invention by knowing those skilled in the art.
Claims (4)
1. a kind of liquid level automatic detection and power control unit, it is characterised in that the device includes liquid level automatic detection sensing dress
Put, power control unit；
Liquid level automatic detection sensing device is made up of electric signal interface, detection sensing device；Detecting sensing device is included in liquid level
Limit to limit in proximity switch and liquid level upper limit float, liquid level and float, liquid level lower limit proximity switch and liquid are limited in proximity switch and liquid level
Position lower limit float；Three signal input parts of electric signal interface connect respectively in liquid level upper limit proximity switch, liquid level limit proximity switch,
The DC voltage output end of liquid level lower limit proximity switch；Three signal output parts of electric signal interface are liquid level automatic detection sensing dress
Put three output ends；When float contacts proximity switch, proximity switch output end output d. c. voltage signal, connect with the proximity switch
The electric signal interface signal output part output d. c. voltage signal connect；Float includes limiting float, liquid in liquid level upper limit float, liquid level
Position lower limit float；Proximity switch includes limiting proximity switch and liquid level lower limit proximity switch in liquid level upper limit proximity switch, liquid level；With
Proximity switch and liquid level lower limit proximity switch is limited in liquid level upper limit proximity switch, liquid level about in the horizontal plane of sustained height to distinguish
Represent the upper limit determined as desired, middle limit, lower limit of liquid level automatic detection sensing device；
Liquid level automatic detection sensing device three approaches with limit proximity switch and liquid level lower limit in liquid level upper limit proximity switch, liquid level
The output end of switch connection is referred to as line output terminal, middle limit output end, lower limit output end；
Power control unit includes coolant liquid level judge module, liquid level automatic detection sensing device electric signal interface；Liquid level is certainly
When three output ends of dynamic detection sensing device are without d. c. voltage signal output, the letter of coolant liquid level judge module output first
Number, have and only liquid level automatic detection sensing device lower limit output end output d. c. voltage signal when, coolant liquid level judges mould
Block exports secondary signal；Have and limit output end only in liquid level automatic detection sensing device, lower limit output end has exported directly respectively
When flowing voltage signal, coolant liquid level judge module exports the 3rd signal；Liquid level automatic detection sensing device upper limit output end, in
When limit output end, lower limit output end export d. c. voltage signal respectively, coolant liquid level judge module exports the 4th signal；
When coolant liquid level judge module exports the first signal, secondary signal, if vehicle is not actuated, coolant liquid level judges mould
Block controls fuel path oil-break, and limitation actuating unit starts；If vehicle launch, coolant liquid level judge module passes through buzzing
Alarm control module sends acoustic alarm；When coolant liquid level judge module exports three signals, coolant liquid level judges mould
Block controls fuel path fuel feeding by fuel oil break-make solenoid valve control electric signal interface, is sent by buzzer siren control module
Acoustic alarm；When coolant liquid level judge module exports four signals, coolant liquid level judge module passes through fuel oil break-make electromagnetism
Valve control electric signal interface control fuel path fuel feeding.
2. a kind of liquid level automatic detection according to claim 1 and power control unit, it is characterised in that
When coolant liquid level judge module exports the first signal；If vehicle launch, coolant liquid level judge module passes through alarm
Display module shows liquid level " sky ", by externally alarming, electric signal interface notifies vehicle alarm device to send sound and light alarm；When cold
But during liquid liquid level judge module output secondary signal；If vehicle launch, coolant liquid level judge module shows mould by alarm
Block show liquid level " under ", by externally alarm electric signal interface notify vehicle alarm device send sound and light alarm；When coolant liquid
When position judge module exports three signals, coolant liquid level judge module by alarm display module show liquid level " in ", it is logical
Cross externally alarm electric signal interface notice vehicle alarm device and send sound and light alarm；When coolant liquid level judge module exports the 4th
During signal, coolant liquid level judge module by alarm display module show liquid level " on ".
3. a kind of liquid level automatic detection according to claim 1 and power control unit, it is characterised in that
Power control unit also includes：Power interface, liquid level automatic detection sensing device electric signal interface, fuel oil break-make magnetic valve
Control electric signal interface, externally alarm electric signal interface, actuating unit start control electric signal interface, alarm shows mould
Block.
4. a kind of liquid level automatic detection according to claim 1 and power control unit, it is characterised in that
The d. c. voltage signal of three output end outputs of liquid level automatic detection sensing device is+24 volt d. c. voltage signals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610168158.9A CN105673183B (en) | 2016-03-23 | 2016-03-23 | Liquid level automatic detection and power control unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610168158.9A CN105673183B (en) | 2016-03-23 | 2016-03-23 | Liquid level automatic detection and power control unit |
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| CN105673183A CN105673183A (en) | 2016-06-15 |
| CN105673183B true CN105673183B (en) | 2018-04-03 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109707499B (en) * | 2018-12-06 | 2020-12-04 | 连云港天明装备有限公司 | Water level protection device for mining vehicle engine |
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| CN2425200Y (en) * | 2000-06-14 | 2001-03-28 | 陈立锦 | Float for water tank of diesel engine |
| CN200999649Y (en) * | 2007-01-27 | 2008-01-02 | 徐州重型机械有限公司 | Engines water tank low level alarming device |
| CN201513232U (en) * | 2009-08-07 | 2010-06-23 | 四川长江工程起重机有限责任公司 | Liquid level alarm device of engine cooling fluid |
| JP5218526B2 (en) * | 2010-11-11 | 2013-06-26 | トヨタ自動車株式会社 | Water temperature sensor abnormality determination device |
| CN202012393U (en) * | 2011-01-02 | 2011-10-19 | 襄樊美标康盛动力科技有限公司 | Self-detection cooling system |
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