CN108825417A - A kind of engine AFS Auxiliary Fuel Supply System and the unmanned plane using the system - Google Patents
A kind of engine AFS Auxiliary Fuel Supply System and the unmanned plane using the system Download PDFInfo
- Publication number
- CN108825417A CN108825417A CN201811019067.4A CN201811019067A CN108825417A CN 108825417 A CN108825417 A CN 108825417A CN 201811019067 A CN201811019067 A CN 201811019067A CN 108825417 A CN108825417 A CN 108825417A
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- China
- Prior art keywords
- engine
- auxiliary fuel
- auxiliary
- controller
- supply system
- 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.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D33/00—Controlling delivery of fuel or combustion-air, not otherwise provided for
- F02D33/003—Controlling the feeding of liquid fuel from storage containers to carburettors or fuel-injection apparatus ; Failure or leakage prevention; Diagnosis or detection of failure; Arrangement of sensors in the fuel system; Electric wiring; Electrostatic discharge
- F02D33/006—Controlling the feeding of liquid fuel from storage containers to carburettors or fuel-injection apparatus ; Failure or leakage prevention; Diagnosis or detection of failure; Arrangement of sensors in the fuel system; Electric wiring; Electrostatic discharge depending on engine operating conditions, e.g. start, stop or ambient conditions
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
- F02M37/04—Feeding by means of driven pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D2200/00—Input parameters for engine control
- F02D2200/02—Input parameters for engine control the parameters being related to the engine
- F02D2200/10—Parameters related to the engine output, e.g. engine torque or engine speed
- F02D2200/101—Engine speed
Abstract
The invention discloses a kind of engine AFS Auxiliary Fuel Supply System and use the unmanned plane of the system, AFS Auxiliary Fuel Supply System includes fuel tank and engine, engine is equipped with carburetor and starts motor, it further include auxiliary fuel-feed device, auxiliary fuel-feed device includes auxiliary feed line and controller, auxiliary feed line is connect with fuel tank and carburetor respectively, the oil pump of supplying oil of carburetor is connected as on auxiliary feed line, engine is equipped with speed probe, the input terminal of controller is electrically connected with speed probe, the output end of controller is electrically connected with starting motor and oil pump respectively.Unmanned plane has used AFS Auxiliary Fuel Supply System.AFS Auxiliary Fuel Supply System real-time detection engine behavior of the invention, it was found that starting auxiliary fuel-feed device after engine misses in time carries out secondary fuel feeding program, operation of oil pump time and accelerator open degree control precisely, engine restarting success rate can be greatly improved, avoid unnecessary loss caused by human negligence, delay of response.
Description
Technical field
The present invention relates to fuel engines fueling technology fields, and in particular to a kind of engine AFS Auxiliary Fuel Supply System and use
The unmanned plane of the system.
Background technique
Currently, the unmanned plane of most of fuel engines all uses supplying oil of carburetor, carburetter choke is both needed to close manually
Closing and opening opens, and needs to close carburetter choke before starting engine, the negative-pressure ward oil pipe internal combustion formed using engine interior
In oil to engine, success is easier to start up in such fuel engines, and when fuel engines works normally, carburetor need to be beaten completely
Choke is opened to guarantee sufficient air supply fuel engines.
However, existing general way is remote when occurring engine oil-break misfiring condition when unmanned plane flight in the sky
Engine is restarted in process control, since carburetter choke is in the open state, starting revolving speed is low, leads in engine air pressure and outer
The pressure difference of boundary's air pressure is smaller, it is difficult to suck fuel oil in carburetor, engine restarting is difficult, flight appearance after unmanned plane runs out of steam
State is difficult to control, and the unpowered gliding state continued for too much time of unmanned plane is easily caused to lead to unmanned plane unstability, fall.
Summary of the invention
To be solved by this invention is that the unmanned plane of fuel engines in the prior art occurs what oil-break stopped working in flight
After failure, since carburetter choke is in the open state, starting revolving speed is low when restarting engine by remotely controlling, cause to send out
The pressure difference of air pressure and ambient pressure is smaller in motivation, it is difficult to suck fuel oil in carburetor, the technology of engine restarting difficulty is asked
Topic is, and it is an object of the present invention to provide a kind of engine AFS Auxiliary Fuel Supply System and the unmanned plane using the system.
The present invention is achieved through the following technical solutions：
A kind of engine AFS Auxiliary Fuel Supply System, including fuel tank and engine, the engine are equipped with carburetor and rise
Dynamic motor, further includes auxiliary fuel-feed device, and the auxiliary fuel-feed device includes auxiliary feed line and controller, and the auxiliary supplies
Oil pipe line is connect with fuel tank and carburetor respectively, and the oil pump of promising supplying oil of carburetor is connected on auxiliary feed line, described
Engine is equipped with speed probe, and the input terminal of the controller is electrically connected with speed probe, the output end point of controller
It is not electrically connected with starting motor and oil pump.
A kind of engine AFS Auxiliary Fuel Supply System of the invention and the unmanned plane using the system, the system are that engine mentions
For auxiliary fuel-feed device.When unmanned plane during flying, when the controller of auxiliary fuel-feed device detect engine in abnormal rotational speed,
Judge that oil-break flameout state occurs in engine, controller, which is opened, starts motor, starts motor and is restarted automatically engine, while oil
Pump actively provides a certain amount of fuel oil to carburetor by auxiliary feed line, while controller control E-Gas is come adjustment
Oily device accelerator open degree.Controller, which can provide appropriate amount of fuel by the control oil pump working time, makes engine start operate one section
Time, engine speed is higher at this time, and negative pressure increases in engine cylinder, and the fuel oil in working connection is full of working connection and supplies carburetion
Device, working connection fuel feed starts after stablizing can be by working connection fuel feeding.
Preferred embodiment, the carburetor are equipped with E-Gas, and the E-Gas is electrically connected with the output end of controller.
Preferred embodiment, the speed probe are Hall sensor, and Hall sensor is used to detect the revolving speed of engine.
Preferred embodiment, the controller are automatic pilot.
Another aspect of the present invention provides a kind of unmanned plane, which uses above-mentioned engine AFS Auxiliary Fuel Supply System.
Compared with prior art, the present invention having the following advantages and benefits：A kind of engine auxiliary of the invention
Oil supply system and the unmanned plane for using the system, the system provide auxiliary fuel-feed device for engine.When unmanned plane during flying, when
The controller of auxiliary fuel-feed device detects engine in abnormal rotational speed, that is, judges that oil-break flameout state occurs in engine,
Controller, which is opened, starts motor drive engine restarting.Oil pump is actively persistently provided to carburetor by auxiliary feed line at this time
A certain amount of fuel oil, while controller controls E-Gas to adjust the accelerator open degree of carburetor.Controller passes through control oil pump
Working time, which provides appropriate amount of fuel to engine, makes engine start operating a period of time, and engine speed is higher at this time,
Negative pressure increases in engine cylinder, and the fuel oil in working connection is full of working connection and supplies carburetor, after working connection fuel feed is stablized
Starting can be by working connection fuel feeding.The AFS Auxiliary Fuel Supply System can automatically detect unmanned plane working connection oil condition, response and
When, control it is accurate.The system real-time detection engine behavior starts auxiliary fuel-feed device after finding engine misses in time
It carries out secondary fuel feeding program, operation of oil pump time and accelerator open degree control precisely, engine restarting success rate can be greatly improved, keep away
Unnecessary loss caused by human negligence, delay of response is exempted from.
Detailed description of the invention
Attached drawing described herein is used to provide to further understand the embodiment of the present invention, constitutes one of the application
Point, do not constitute the restriction to the embodiment of the present invention.In the accompanying drawings：
Fig. 1 is schematic structural view of the invention.
Specific embodiment
To make the objectives, technical solutions, and advantages of the present invention clearer, below with reference to embodiment and attached drawing, to this
Invention is described in further detail, and exemplary embodiment of the invention and its explanation for explaining only the invention, are not made
For limitation of the invention.
Embodiment
As shown in Figure 1, a kind of engine AFS Auxiliary Fuel Supply System of the present invention, including fuel tank and engine, set on engine
There is carburetor and start motor, carburetor is under the vacuum action for generating when the engine is working, by a certain proportion of vapour
The device that oil mixes with air；Starting motor is for engine before being operated with self power, and driving engine rotation is real
The device of existing engine start.
This engine AFS Auxiliary Fuel Supply System includes auxiliary fuel-feed device, the auxiliary fuel-feed device include auxiliary feed line and
Controller, auxiliary feed line are connect with fuel tank and carburetor respectively, and promising carburetor is connected on auxiliary feed line and is supplied
Fuel oil in fuel tank is input to carburetor according to setting flow direction and flow by oil pump by the oil pump of oil, auxiliary feed line
Interior, oil pump actively provides twice of amount of fuel fuel feeding of engine work oil consumption per second to carburetor.Engine is equipped with inspection
The speed probe of engine speed is surveyed, the input terminal of controller is electrically connected with speed probe, the output end difference of controller
It is electrically connected with starting motor and oil pump.
In unmanned plane in state of flight, the revolving speed of speed probe detection engine is in improper revolving speed, that is, exists
When 2000r/min or less (unmanned plane is in the engine speed of state of flight in 2000-6500r/min under normal circumstances), control
After device processed receives speed probe detection signal, controller starting starts motor and operation of oil pump, starts motor driven and starts
Engine start is realized in machine rotation, and the fuel oil that oil pump extracts in fuel tank continues setting time fuel feeding to the carburetor of engine,
Supply time is not more than 2S.Under the cooperation for starting motor, auxiliary feed line and oil pump can the operating of quick start engine,
When engine speed is normal, auxiliary fuel-feed device stops working, by working connection again to engine oil operation.
Working principle：
A kind of engine AFS Auxiliary Fuel Supply System of the invention and the unmanned plane using the system, the system are that engine mentions
For auxiliary fuel-feed device.When unmanned plane during flying, when the controller of auxiliary fuel-feed device detect engine in abnormal rotational speed,
Judge that oil-break flameout state occurs in engine, controller, which is opened, starts motor to be restarted automatically engine, controller and starting
Motor circuit connection, controller are equivalent to an on-off action, and control starts the motor working time, and the working time is manually set
In controller.Controller starts oil pump simultaneously, and oil pump actively provides a certain amount of fuel oil to carburetor by auxiliary feed line,
Controller is when control oil pump works；Controller is connect with oil pump circuit, and controller is equivalent to an on-off action, control oil pump
Working time, working time are manually set in the controller.Controller controls E-Gas to adjust the throttle of carburetor simultaneously
Aperture, controller by steering engine control engine E-Gas aperture, E-Gas aperture by E-Gas steering engine control
System, E-Gas open range 0-100%, and then engine power output is controlled, more conducively engine restarting success.Control
Device, which can provide appropriate amount of fuel by the control oil pump working time, makes engine start operating a period of time, and engine turns at this time
Speed is higher, and negative pressure increases in engine cylinder, and the fuel oil in working connection is full of working connection and supplies carburetor, working connection fuel feed
Start auxiliary fuel-feed device fuel cut-off after being worked well by working connection fuel feeding, engine after stabilization.
Engine operating is restarted according to realizing by the opening and closing control mode of motorized adjustment choke, is used
The drawbacks of this kind of mode, is：In the case where unmanned plane is in high-altitude rapid flight state, since aerial air-flow and air pressure moment generate
Variation, also the moment generates variation to in-engine negative pressure condition, be unfavorable for working connection into carburetor according to the flow of setting and
Flow velocity carries out fuel feeding, causes fuel feeding unstable；Carburetor is unable to accurately control using the opening and closing scheme of choke simultaneously
Fuel delivery when engine restarting, easily causes engine to flood cylinder, and engine, which floods, extremely difficult after cylinder restarts success；Therefore hair can be generated
Motivation is restarted unsuccessfully, causes unmanned plane out of control and air crash accident.
Fuel feeding is carried out to carburetor according to by the way that oil pump is arranged on working connection, is held although this can aid in working connection
Continue continuous fuel feeding, but such fuel system is undoubtedly increased the energy loss of unmanned plane, influences the course continuation mileage of unmanned plane
And cruise duration；Supplying oil of carburetor amount changes with changing in engine block with atm difference simultaneously, working connection oil pump scheme oil
Oil pump feed amount is generally steady state value, does not meet engine supply and demand demand, is unfavorable for unmanned plane stable operation.
Therefore the auxiliary feed line of AFS Auxiliary Fuel Supply System of the present invention is flowed to by oil pump according to setting and flow velocity is to carburetion
Device carries out fuel feeding, and revolving speed, supply time, flow direction and the flow of oil pump are controllable and free from the influence of the external environment, can be by
Engine is quickly restarted according to setting reset routine, stability is best, and engine restarting success rate can be greatly improved.
Preferred embodiment scheme is equipped with E-Gas on carburetor, and E-Gas is electrically connected with the output end of controller,
Controller can control E-Gas according to reset routine to adjust carburetor accelerator open degree, and cooperate and start motor and oil pump
Engine is restarted, engine restarting success rate is improved.
Class scheme is preferably implemented, speed probe is preferably Hall sensor, and Hall sensor is for detecting engine
Revolving speed, Hall sensor have that sound construction, small in size, light-weight, the service life is long, easy for installation, and small power consumption, frequency are high (reachable
1MHZ), vibration resistance, the pollution or corrosion of not being afraid of dust, greasy dirt, steam and salt fog etc. good characteristic, while Hall sensor
It detects that engine rotor rotates a circle and just exports a pulse, so as to measure engine revolution, just by access frequency meter
The revolving speed of engine can be measured.
Preferred embodiment scheme, the controller are automatic pilot, and automatic pilot is the automatic control system of unmanned plane,
Unmanned plane accurately can be detected and be manipulated.
Another aspect of the present invention provides a kind of unmanned plane, which uses the engine auxiliary feed-oil of above-described embodiment
System.
Above-described specific embodiment has carried out further the purpose of the present invention, technical scheme and beneficial effects
It is described in detail, it should be understood that being not intended to limit the present invention the foregoing is merely a specific embodiment of the invention
Protection scope, all within the spirits and principles of the present invention, any modification, equivalent substitution, improvement and etc. done should all include
Within protection scope of the present invention.
Claims (5)
1. a kind of engine AFS Auxiliary Fuel Supply System, including fuel tank and engine, the engine is equipped with carburetor and starting
Motor, which is characterized in that it further include auxiliary fuel-feed device, the auxiliary fuel-feed device includes auxiliary feed line and controller,
The auxiliary feed line is connect with fuel tank and carburetor respectively, and promising supplying oil of carburetor is connected on auxiliary feed line
Oil pump, the engine are equipped with speed probe, and the input terminal of the controller is electrically connected with speed probe, controller
Output end is electrically connected with starting motor and oil pump respectively.
2. a kind of engine AFS Auxiliary Fuel Supply System according to claim 1, which is characterized in that the carburetor is equipped with electricity
Electronic throttle, the E-Gas are electrically connected with the output end of controller.
3. a kind of engine AFS Auxiliary Fuel Supply System according to claim 1, which is characterized in that the speed probe is suddenly
That sensor, Hall sensor are used to detect the revolving speed of engine.
4. a kind of engine AFS Auxiliary Fuel Supply System according to claim 1, which is characterized in that the controller is to drive automatically
Sail instrument.
5. a kind of unmanned plane, which is characterized in that the unmanned plane is assisted using engine according to any one of claims 1-4
Oil supply system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811019067.4A CN108825417A (en) | 2018-09-03 | 2018-09-03 | A kind of engine AFS Auxiliary Fuel Supply System and the unmanned plane using the system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811019067.4A CN108825417A (en) | 2018-09-03 | 2018-09-03 | A kind of engine AFS Auxiliary Fuel Supply System and the unmanned plane using the system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108825417A true CN108825417A (en) | 2018-11-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811019067.4A Pending CN108825417A (en) | 2018-09-03 | 2018-09-03 | A kind of engine AFS Auxiliary Fuel Supply System and the unmanned plane using the system |
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| CN (1) | CN108825417A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110439711A (en) * | 2019-08-21 | 2019-11-12 | 成都纵横大鹏无人机科技有限公司 | Unmanned vehicle engine control device and method |
| CN112228228A (en) * | 2020-10-10 | 2021-01-15 | 西安爱生技术集团公司 | Unmanned aerial vehicle fuel pump work control system and control method |
| CN113107674A (en) * | 2021-04-17 | 2021-07-13 | 西北工业大学 | Small-size piston carburetor engine real-time data monitoring and adjustment system |
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