CN105673183B - Liquid level automatic detection and power control unit - Google Patents

Liquid level automatic detection and power control unit Download PDF

Info

Publication number
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
Authority
CN
China
Prior art keywords
liquid level
coolant
proximity switch
automatic detection
alarm
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN201610168158.9A
Other languages
Chinese (zh)
Other versions
CN105673183A (en
Inventor
甘林
逯呈承
孙宪俊
魏成思
孙立娟
赵志颖
郭卓萍
陈发伟
李萌
于海庆
李朵朵
李敬有
王昕博
郑晓萌
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Beijing North Vehicle Group Corp
Original Assignee
Beijing North Vehicle Group Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Beijing North Vehicle Group Corp filed Critical Beijing North Vehicle Group Corp
Priority to CN201610168158.9A priority Critical patent/CN105673183B/en
Publication of CN105673183A publication Critical patent/CN105673183A/en
Application granted granted Critical
Publication of CN105673183B publication Critical patent/CN105673183B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01PCOOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P11/00Component parts, details, or accessories not provided for in, or of interest apart from, groups F01P1/00 - F01P9/00
    • F01P11/14Indicating devices; Other safety devices
    • F01P11/18Indicating devices; Other safety devices concerning coolant pressure, coolant flow, or liquid-coolant level

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • 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

Liquid level automatic detection and power control unit
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.
CN201610168158.9A 2016-03-23 2016-03-23 Liquid level automatic detection and power control unit Active CN105673183B (en)

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

Publications (2)

Publication Number Publication Date
CN105673183A CN105673183A (en) 2016-06-15
CN105673183B true CN105673183B (en) 2018-04-03

Family

ID=56214965

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201610168158.9A Active CN105673183B (en) 2016-03-23 2016-03-23 Liquid level automatic detection and power control unit

Country Status (1)

Country Link
CN (1) CN105673183B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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

Also Published As

Publication number Publication date
CN105673183A (en) 2016-06-15

Similar Documents

Publication Publication Date Title
US7769537B2 (en) Auxiliary locomotive engine warming system
KR20180113795A (en) System and controlling method extinguising a fire for battery of vehicle
CN103920666B (en) Anti-creepage type lampblack absorber cleaning equipment
CN105673183B (en) Liquid level automatic detection and power control unit
CN101333957B (en) Ship diesel closed type cooling water system risk prealarming method
CN106246332A (en) For diagnosing the apparatus and method of the fault of the piston cooling nozzle of electromotor
CN111991729A (en) Power supply fire extinguishing device and locomotive
CN205955825U (en) Liquid level automated inspection sensing device
CN110285582A (en) A kind of wall-hung boiler and its control method
CN101644198B (en) Electric automatic protective device of anti-explosion diesel locomotive
CN113022310A (en) Thermal runaway control method and device for vehicle power battery
CN104514614B (en) For detecting the device and system of cooling system leakage
CN206809567U (en) Locomotive extinguishing device
CN212483720U (en) Automatic test bed for electrical test of electrical equipment
CN206304263U (en) A kind of fire trace tube extinguishing device with leakage warning function
CN213501903U (en) Charging pile for monitoring vehicle
KR100228101B1 (en) Automobile cylinder with gas leaking detection for combustion chamber
CN216742037U (en) Dry-wet dual-purpose submersible pump
CN217586202U (en) Device for monitoring leakage of generator air cooler and generator structure with device
CN218934565U (en) Diesel engine monitor
KR102482227B1 (en) Fire monitoring system and method for a vehicle
CN220669184U (en) Steam pipeline end protection device
CN219996437U (en) Waterproof test device for power battery
CN105119109B (en) Electrical leakage detecting method and socket
CN217481365U (en) Crankcase ventilation pipe device

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant