CN107461280A - Power modified form diaphragm type carburator - Google Patents
Power modified form diaphragm type carburator Download PDFInfo
- Publication number
- CN107461280A CN107461280A CN201710710113.4A CN201710710113A CN107461280A CN 107461280 A CN107461280 A CN 107461280A CN 201710710113 A CN201710710113 A CN 201710710113A CN 107461280 A CN107461280 A CN 107461280A
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- China
- Prior art keywords
- oil
- negative pressure
- air
- fuel
- carburetor body
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Classifications
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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
- F02M9/00—Carburettors having air or fuel-air mixture passage throttling valves other than of butterfly type; Carburettors having fuel-air mixing chambers of variable shape or position
- F02M9/12—Carburettors having air or fuel-air mixture passage throttling valves other than of butterfly type; Carburettors having fuel-air mixing chambers of variable shape or position having other specific means for controlling the passage, or for varying cross-sectional area, of fuel-air mixing chambers
- F02M9/121—Iris diaphragms
-
- 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
- F02M17/00—Carburettors having pertinent characteristics not provided for in, or of interest apart from, the apparatus of preceding main groups F02M1/00 - F02M15/00
- F02M17/02—Floatless carburettors
- F02M17/04—Floatless carburettors having fuel inlet valve controlled by diaphragm
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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
- F02M1/00—Carburettors with means for facilitating engine's starting or its idling below operational temperatures
- F02M1/02—Carburettors with means for facilitating engine's starting or its idling below operational temperatures the means to facilitate starting or idling being chokes for enriching fuel-air mixture
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Lubrication Of Internal Combustion Engines (AREA)
- Control Of The Air-Fuel Ratio Of Carburetors (AREA)
Abstract
The present invention relates to power modified form diaphragm type carburator, including carburetor body, the inlet channel of carburetor body is provided through in carburetor body portion of upper body, inlet channel interior edge airintake direction is sequentially provided with rotatably to adjust the choke of air inflow, for accelerating the trunnion of speed air flow and rotatably to adjust the throttle valve device of air-fuel mixture amount, the downside of carburetor body is provided with the fuel injection chamber for storing fuel oil, being provided with carburetor body is easy to the fuel oil in fuel injection chamber to spray to the oil spout road in inlet channel, the bottom of carburetor body is provided with the negative pressure adjusting device for controlling fuel tank oil-feed into fuel injection chamber, negative pressure adjusting device is located at the lower section of fuel injection chamber.The present invention uses horizontally disposed negative pressure adjusting device, make negative pressure bullet film uniformly by oil immersion, preventing the oily degree of corrosion difference of negative pressure bullet film causes Local Damaged serious, avoid negative pressure bullet film deform when physical property change, caused by the bad quality problems of supplying oil of carburetor generation.
Description
Technical field
The present invention relates to Manufacturing Technology for Carburetors field, and in particular to a kind of power modified form diaphragm type carburator, suitable for institute
There is general small-size gasoline engine power, (such as：Generating, water pump, mini-tiller, snowplough etc.), the battery truck that is particularly suitable for use in increases journey power
Engine.
Background technology
Carburetor is realized the atomization of gasoline using the kinetic energy for sucking air stream, is specifically as a kind of precision optical machinery device
A kind of mechanical device that under vacuum action caused by engine work, a certain proportion of gasoline is mixed with air.It is to hair
The important function of motivation can be referred to as " heart " of engine.Carburetor can according to the different working condition demand of engine,
Corresponding concentration is matched out by machinery debugging, exports the gaseous mixture measured accordingly.
Common carburetor is all to control oil-feed by float, but in the market also occurs not using float control oil-feed
Carburetor, such as the carburetor using vacuum cavitations oil-feed, but because this carburetor oil-feed part is arranged on sidepiece, cause oil pocket
For interior fuel oil by gravimetric tilt, parts thereof particularly diaphragm unit immersion oil is uneven, is locally easily deformed seriously, can cause
The generation for the problems such as supplying oil of carburetor is bad, and deformation state is in for a long time by the part of negative pressure, it can seriously reduce part
Service life, have a strong impact on the performance of carburetor.In addition because of the air throttle of carburetor and the aperture of choke and the work of carburetor
It is closely bound up to make performance, the more high then performance of control accuracy is better, but the air throttle of carburetor and choke are opened under normal circumstances
Degree is all generally that degree of regulation is poor by being manually adjusted.
The content of the invention
The purpose of the present invention is to be directed to above weak point, there is provided power modified form diaphragm type carburator, using starting
Negative pressure caused by machine work realizes oil-feed, and negative pressure adjusting device is horizontally set on the bottom of carburetor body, adjusts negative pressure
Device is located at oil immersion of the parts uniformity by fuel oil in fuel injection chamber of fuel injection chamber side, avoids part because of oily degree of corrosion difference generation office
The generation for the problems such as portion deforms, and supplying oil of carburetor is bad caused by.
Scheme is used by the present invention solves technical problem：A kind of power modified form diaphragm type carburator, including carburetion
Device body, it is characterised in that：Be provided through the inlet channel of carburetor body in the carburetor body portion of upper body, it is described enter
Gas passage interior edge airintake direction is sequentially provided with rotatably to adjust the choke of air inflow, for accelerating speed air flow
Trunnion and rotatably to adjust the throttle valve device of air-fuel mixture amount, the downside of the carburetor body is provided with for storing up
The fuel injection chamber of fuel oil is deposited, is provided with carburetor body and is easy to the fuel oil in fuel injection chamber to spray to the oil spout road in inlet channel, it is described
The bottom of carburetor body is provided with the negative pressure adjusting device for controlling fuel tank oil-feed into fuel injection chamber, the negative pressure regulation dress
Setting in the lower section of fuel injection chamber.
In order to working state control oil-feed oil circuit oil-feed into fuel injection chamber according to engine, the negative pressure adjusting device
Negative pressure bullet film including the upper shell on carburetor body downside, between carburetor body and upper shell, institute
Negative pressure bullet film is stated to be arranged at below fuel injection chamber in order to which negative pressure bullet film is by the uniform oil immersion of fuel oil in fuel injection chamber, the upper shell
Upper side is provided with the atmospheric pressure chamber for imposing atmospheric pressure to negative pressure bullet film, and the atmospheric pressure chamber is located under negative pressure bullet film
It is square, the pressure hole for connecting atmospheric pressure chamber and external pressure is additionally provided with the upper shell；Set in the carburetor body
There is an oil-feed oil circuit that the fuel oil be easy in fuel tank enters in fuel injection chamber, the intersection of the oil-feed oil circuit and fuel injection chamber is hydraulic fluid port,
The needle valve type oil-inlet mechanism for controlling oil-feed oil circuit break-make is provided with the fuel injection chamber, the needle valve type oil-inlet mechanism includes
For blocking or opening the needle of hydraulic fluid port and control needle to move up and down to block by suction function suffered by negative pressure bullet film
Or the rocking arm of hydraulic fluid port is opened, it is rotatably installed in the middle part of the rocking arm by rotary shaft on carburetor body, needle is installed on rocking arm
One end, the needle valve type oil-inlet mechanism also include being arranged at thimble below the rocking arm other end and on negative pressure bullet film and
The back-moving spring for being used to reset rocking arm being arranged above rocking arm.
In order to reduce diaphragm for a long time by deformation caused by suction function, avoid causing to rupture, the negative pressure regulation dress
Putting also includes lower house, the diaphragm being arranged between upper shell and lower house and is fixedly installed in outer on lower house lower surface
Lid, the downside of the upper shell are provided with negative pressure cavity, and the negative pressure cavity passes through the negative pressure channel and hair in carburetor body
Motivation cylinders, which pass to, makes negative pressure cavity produce negative pressure of vacuum, and the turriform bullet acted on above diaphragm is provided with the negative pressure cavity
Spring is acted on caused deformation by negative pressure of vacuum for a long time in order to reduce diaphragm, avoids causing to rupture.
In order to which according to the working state control fuel tank of engine, to oil-feed oil circuit oil-feed, the oil-feed oil circuit includes setting
Oil suction chamber in lower house lower end, be arranged at cover outside be used to connect the fuel inlet fitting of oil suction chamber and fuel tank, be arranged at lower casing
Body upper end and be connected with oil suction chamber buffering oil pocket, be arranged on lower house upper surface and with buffering oil pocket be connected first
Oilhole, the second oilhole for being arranged at lower house upper surface, it is arranged at upper shell lower end and on the first oilhole and the second oilhole
Side is used to connect the oil groove of the first oilhole and the second oilhole, is arranged at lower house upper end and the oil storage being connected with the second oilhole
Chamber, the fuel feed hole for being arranged at lower house upper surface and being connected with shoe cream room and it is arranged at upper shell lower end and is located at fuel feed hole
Second oil groove of top, second oil groove are connected with hydraulic fluid port, the diaphragm be provided with shape, position respectively with oil groove and the
The first breach and the second breach that two oil grooves match, first breach is provided with to be used to block above the first oilhole
First oilhole simultaneously can open the first oilhole so that the first movable valve that oil suction chamber is connected with oil groove, institute when diaphragm is by negative pressure
Stating the second breach and being provided with makes above fuel feed hole for blocking fuel feed hole and can open fuel feed hole when diaphragm is by negative pressure
Obtain the second movable valve that fuel feed hole is connected with the second oil groove.
In order to the deflection of the reduction activity valve when diaphragm is by negative pressure, increase the service life, the diaphragm is included certainly
Gasket seal, diaphragm one and the diaphragm two set gradually under above, the first breach and the second breach the insertion gasket seal,
Diaphragm one and diaphragm two, the first movable valve and the second movable valve are arranged on diaphragm two, and the diaphragm one uses bullet
Property material be made, the diaphragm two is made of not oil absorption material.
Preferably, the diaphragm includes the gasket seal and diaphragm three that set gradually from top to bottom, first breach and
Second breach penetrates gasket seal and diaphragm three, the first movable valve and the second movable valve are arranged on diaphragm three.
In order to provide different air-fuel mixture amounts according to a variety of operating modes, high speed oil-feed is provided with the fuel injection chamber
Metering-orifice and idling fuel feed hole, the high speed oil-feed metering-orifice are connected by oil spout road with the main burner in inlet channel；Institute
State in inlet channel and be provided with air throttle mixed air vessel, the throttle valve device is arranged in air throttle mixed air vessel, the carburetion
The idling air duct positioned at inlet channel side is provided with device body, the idling air duct runs through carburetor body, institute
State idling air duct interior edge airintake direction and be disposed with air-fuel mixture chamber and transition mixed air vessel, the transition mixed air vessel
It is connected by several transition apertures for being opened in air throttle mixing chamber hole wall with air throttle mixing chamber, the carburetor body
The mounting hole intersected with air-fuel mixture chamber is inside additionally provided with, idling jet, the idling jet are installed in the mounting hole
The fuel oil during idling that is connected by the duct that is arranged in carburetor body with idling fuel feed hole in fuel injection chamber can pass through
Idling jet enters air-fuel mixture chamber, and the outside of the transition mixed air vessel, which is provided with, leads to extraneous opening, in the opening
Provided with the jam for blocking the opening.
Tolerance is mixed into during in order to adjust idling, is additionally provided with the idling air duct positioned at transition mixed air vessel
The adjustment hole of rear side, the adjustment hole by being connected located at the tapered hole of air throttle mixing chamber hole wall with air throttle mixing chamber,
The tapered hole is on rear side of air throttle, and the adjustment hole also extends laterally the mounting hole perpendicular to idling air duct, institute
State the idle adjusting screw that is provided with and can be moved axially along mounting hole in mounting hole, the tapered knot in bottom of the idle adjusting screw
Structure, and the terminal end shape of the idle adjusting screw is adapted with taper hole shape.
In order to which by the rotation of step motor control choke, the choke includes being rotationally connected with inlet channel
Interior Air strangler spindle and the choke being fixedly arranged on Air strangler spindle, the upper end of the Air strangler spindle stretch out carburetor body it is outer and
Air strangler spindle rocking arm is installed, the Air strangler spindle rocking arm is provided with the choke motor slot for being used for inserting step motor shaft, institute
State and two are provided with carburetor body positioned at carburetor body top front side both ends for installing choke stepper motor
First mounting post.
In order to which by the rotation of step motor control air throttle, the throttle valve device includes being rotationally connected with inlet channel
Interior throttle plate pin and the air throttle being fixedly arranged on throttle plate pin, the upper end of the throttle plate pin stretch out carburetor body it is outer and
Throttle plate pin rocking arm is installed, the throttle plate pin rocking arm is provided with the solar term motor slot for being used for inserting step motor shaft, institute
State carburetor body and be used to limiting the stop screw of the throttle plate pin rocking arm anglec of rotation provided with one, on the carburetor body
It is provided with two the second mounting posts for being used to install air throttle stepper motor positioned at both ends on rear side of carburetor body top.
For prior art, the present invention has advantages below：
(1) present invention makes the fuel-oil-water in fuel injection chamber using the bottom that negative pressure adjusting device is arranged on to carburetor body
Divide cloth equally, negative pressure bullet film is able to uniformly by oil immersion, and preventing the oily degree of corrosion difference of negative pressure bullet film causes Local Damaged serious, avoids
Negative pressure bullet film deformation caused by physical property change, caused by the bad quality problems of supplying oil of carburetor generation；
(2) present invention uses step motor control choke aperture, has good control action to engine start, can
To automatically adjust choke aperture according to different use environments, engine is set to obtain denseer gaseous mixture on startup to meet to open
It is dynamic to require；Using step motor control throttle opening, load can be used according to real work when such engine works
Size carries out the aperture of accurate control air throttle, i.e. accurate adjustment enters engine mixed gas air inflow, meets different loads work
The requirement of mixture strength under condition；
(3) present invention is using being provided with the diaphragm of movable valve, in order to be produced during pressure difference suffered by diaphragm upper and lower sides
Raw pressure differential can drive movable valve activity, realize that diaphragm is not flowed by activity valve closure shell body fuel during negative pressure,
When diaphragm is by negative pressure, movable film valve is opened, and the fuel oil smooth flow of shell body to inner housing and then is flowed in oil-feed oil circuit, and
And the present invention is provided with turriform spring, can reduce the deflection of diaphragm when diaphragm is by negative pressure, avoid causing to rupture, extend film
The service life of piece；
(4) diaphragm of the invention is arranged on most lower using gasket seal, upper diaphragm and lower diaphragm three-decker, movable valve
Layer, can when diaphragm is by negative pressure reduction activity valve deflection, increase the service life, in addition, valve uses macromolecule glass
Fibrous material, immersion oil is indeformable, further extends reliability and service life；
(5) present invention coordinates needle valve type oil-inlet mechanism using negative pressure bullet film, poor by negative pressure bullet film upper and lower sides pressure
To drive negative pressure bullet film to move, and then contact on rocking arm, drive needle to move up opening hydraulic fluid port, oil-feed is completed, so as to avoid floating
The oil-feed oil leakage phenomenon caused by road jolts that the carburetor of son control oil-feed can run into, makes engine cisco unity malfunction,
The potential safety hazard easily caused by oil leak is it also avoid simultaneously；
(6) present invention sets idling air duct, main burner, coordinates high speed oil-feed metering-orifice and idling fuel feed hole, can basis
Situation adjusts distributive value, and different fuel deliveries is provided under different operating modes, it is ensured that engine work is more stable.
Brief description of the drawings
The invention will be further described in conjunction with the embodiments with reference to the accompanying drawings：
Fig. 1 is the structural representation of the embodiment of the present invention one；
Fig. 2 is the structural representation to be exploded to the choke in Fig. 1 and throttle valve device；
Fig. 3 is the structural representation to be exploded to the negative pressure device in Fig. 1；
Fig. 4 is the structural representation at another visual angle in Fig. 3；
Fig. 5 is the front view of embodiment 1；
Fig. 6 is A-A sectional views in Fig. 5；
Fig. 7 is the structural representation that partial cutaway is carried out to Fig. 5；
Fig. 8 is the structural representation of the embodiment of the present invention two；
Fig. 9 is the structural representation at another visual angles of Fig. 8；
Figure 10 is the structural representation of the embodiment of the present invention three；
Figure 11 is the structural representation of the embodiment of the present invention four.
In figure：
1- carburetor bodies；The mounting posts of 1-1- first；The mounting posts of 1-2- second；1-3- fuel injection chambers；1-4- high speed oil inlet quantities
Hole；1-5- idling fuel feed holes；1-6- inlet channels；1-6-1- air throttles mixed air vessel；1-7- idling air ducts；1-7-1- mistakes
Cross mixed air vessel；1-7-2- adjustment holes；1-7-3- air-fuel mixture chambers；1-7-4- transition apertures；1-8- main burners；1-9- negative pressure is led to
Road；1-10- trunnions；1-11- idling jets；2- negative pressure adjusting devices；2-1- negative pressure bullet films；2-1-1- thimbles；2-2- upper casings
Body；2-2-1- negative pressure cavities；2-2-2- negative pressure holes；2-2-3- oil grooves；2-2-4- turriform springs；The oil grooves of 2-2-5- second；2-2-6-
Atmospheric pressure chamber；2-2-7- pressure holes；2-3- diaphragms；The first movable valves of 2-3-1-；The breach of 2-3-2- first；2-3-3- second lives
Moving vane film；The breach of 2-3-4- second；2-3-5- gasket seals；2-3-6- diaphragms one；2-3-7- diaphragms two；2-3-8- diaphragms three；
2-4- lower houses；2-4-1- oil suction chambers；2-4-2- fuel feed holes；2-4-3- shoe cream rooms；The oilholes of 2-4-4- second；The oil of 2-4-5- first
Hole；2-4-6- buffers oil pocket；2-5- enclosing covers；2-5-1- fuel inlet fittings；3- throttle valve devices；3-1- throttle plate pins；3-2- solar term
Door；3-3- throttle plate pin rocking arms；3-4- solar term motor slots；4- chokes；4-1- Air strangler spindles；4-2- chokes；4-
3- Air strangler spindle rocking arms；4-4- choke motor slots；5- stop screws；6- jams；7- idle adjusting screws；8- needle valve type oil-feeds
Mechanism；8-1- rocking arms；8-2- needles；8-3- back-moving springs；8-4- rotary shafts.
Embodiment
Present invention is described in detail with reference to Figure of description and specific embodiment：
Embodiment one：
As shown in figs. 1-7, it is a kind of power modified form diaphragm type carburator provided by the invention, including carburetor body 1,
The inlet channel 1-6 of carburetor body 1, the inlet channel 1-6 interior edges are provided through in the portion of upper body of carburetor body 1
Airintake direction is sequentially provided with rotatably to adjust the choke 4 of air inflow, the trunnion 1- for accelerating speed air flow
10 and rotatably to adjust the throttle valve device 3 of air-fuel mixture amount, the downside of the carburetor body 1 is provided with for storing
The fuel injection chamber 1-3 of fuel oil, the interior oil spout sprayed to provided with the fuel oil being easy in fuel injection chamber 1-3 in inlet channel 1-6 of carburetor body 1
Road, the bottom of the carburetor body 1 are provided with the negative pressure adjusting device 2 for controlling fuel tank oil-feed into fuel injection chamber 1-3, institute
State the lower section that negative pressure adjusting device 2 is located at fuel injection chamber 1-3.
In order to working state control oil-feed oil circuit oil-feed into fuel injection chamber according to engine, the negative pressure adjusting device
The 2 upper shell 2-2 for including being arranged on the downside of carburetor body 1, bearing between carburetor body 1 and upper shell 2-2
Pressure plays film 2-1, the negative pressure bullet film 2-1 and is arranged at fuel injection chamber 1-3 lower sections in order to which negative pressure bullet film 2-1 is by fuel injection chamber 1-3
The uniform oil immersion of fuel oil, the upper side of the upper shell 2-2 are provided with the atmospheric pressure for imposing atmospheric pressure to negative pressure bullet film 2-1
Chamber 2-2-6, the atmospheric pressure chamber 2-2-6 are located at negative pressure bullet film 2-1 lower section, are additionally provided with the upper shell 2-2 for connecting
Atmospheric pressure chamber 2-2-6 and external pressure pressure hole 2-2-7；Being provided with the carburetor body is easy to the fuel oil in fuel tank to enter
Enter the oil-feed oil circuit in fuel injection chamber 1-3, the oil-feed oil circuit and fuel injection chamber 1-3 intersection is hydraulic fluid port, in the fuel injection chamber 1-3
Be provided with the needle valve type oil-inlet mechanism 8 for controlling oil-feed oil circuit break-make, the needle valve type oil-inlet mechanism 8 include for blocking or
Open the needle 8-2 of hydraulic fluid port and by suction function suffered by negative pressure bullet film 2-1 controlling needle 8-2 to move up and down to block or
Open and be rotatably installed in the middle part of the rocking arm 8-1, the rocking arm 8-1 of hydraulic fluid port by rotary shaft 8-4 on carburetor body 1, needle 8-2
Rocking arm 8-1 one end is installed on, the needle valve type oil-inlet mechanism 8 also includes being arranged at below the rocking arm 8-1 other ends and positioned at negative
Pressure plays the thimble 2-1-1 on the film 2-1 and back-moving spring 8-3 for being used to reset rocking arm 8-1 being arranged above rocking arm 8-1.
In order to reduce diaphragm for a long time by deformation caused by suction function, avoid causing to rupture, the negative pressure regulation dress
Putting 2 also includes lower house 2-4, the diaphragm 2-3 being arranged between upper shell 2-2 and lower house 2-4 and is fixedly installed in lower casing
The downside of enclosing cover 2-5, the upper shell 2-2 on body 2-4 lower surfaces lead to provided with negative pressure cavity 2-2-1, the negative pressure cavity 2-2-1
The negative pressure channel 1-9 crossed in carburetor body 1 passes to engine cylinders bears negative pressure cavity 2-2-1 generations vacuum
Press, the turriform spring 2-2-4 acted on above diaphragm 2-3 is provided with the negative pressure cavity 2-2-1 and is grown in order to reduce diaphragm 2-3
Phase is acted on caused deform by negative pressure of vacuum.
In order to which according to the working state control fuel tank of engine, to oil-feed oil circuit oil-feed, the oil-feed oil circuit includes setting
Oil suction chamber 2-4-1 in lower house 2-4 lower ends, the oil-feed for being used to connect oil suction chamber 2-4-1 and fuel tank being arranged on enclosing cover 2-5
Joint 2-5-1, the buffering oil pocket 2-4-6 for being arranged at lower house 2-4 upper ends and being connected with oil suction chamber 2-4-1, it is arranged at lower casing
The first oilhole 2-4-5 for being connected on body 2-4 upper surfaces and with buffering oil pocket 2-4-6, it is arranged at the of lower house 2-4 upper surfaces
Two oilhole 2-4-4, it is arranged at upper shell 2-2 lower ends and is used to connect above the first oilhole 2-4-5 and the second oilhole 2-4-4
Logical first oilhole 2-4-5 and the second oilhole 2-4-4 oil groove 2-2-3, be arranged at lower house 2-4 upper ends and with the second oilhole 2-4-
The 4 shoe cream room 2-4-3 being connected, it is arranged at lower house 2-4 upper surfaces and the fuel feed hole 2-4-2 being connected with shoe cream room 2-4-3
And it is arranged at upper shell 2-2 lower ends and the second oil groove 2-2-5, the second oil groove 2-2-5 above fuel feed hole 2-4-2
It is connected with hydraulic fluid port, the diaphragm 2-3 is provided with shape, position matches with oil groove 2-2-3 and the second oil groove 2-2-5 respectively
First breach 2-3-2 and the second breach 2-3-4, first breach is provided with is used for closure first above the first oilhole
Oilhole simultaneously can open the first oilhole so that the first activity that oil suction chamber 2-4-1 is connected with oil groove 2-2-3 when diaphragm is by negative pressure
Valve 2-3-1, the second breach 2-3-4 be provided with above fuel feed hole 2-4-2 be used to block fuel feed hole 2-4-2 and
Diaphragm 2-3 by can open fuel feed hole 2-4-2 during negative pressure so that fuel feed hole 2-4-2 be connected with the second oil groove 2-2-5 second live
Moving vane film 2-3-3.
In order to the deflection of the reduction activity valve when diaphragm is by negative pressure, increase the service life, the diaphragm 2-3 includes
Gasket seal 2-3-5, the 2-3-6 of diaphragm one and diaphragm two 2-3-7, the first breach 2-3-2 set gradually from top to bottom
With the second breach (2-3-4) insertion gasket seal 2-3-5, the 2-3-6 of diaphragm one and the 2-3-7 of diaphragm two, the first movable valve
The movable valve 2-3-3 of 2-3-1 and second are arranged on the 2-3-7 of diaphragm two, and the 2-3-6 of diaphragm one is made of elastomeric material,
Such as canvas filler rubber can be used, the 2-3-7 of diaphragm two is made of not oil absorption material, indeformable during immersion oil, such as can be used
Macromolecule glass fibre.
In order to provide different air-fuel mixture amounts according to a variety of operating modes, it is provided with the fuel injection chamber 1-3 at a high speed
Oil-feed metering-orifice 1-4 and idling fuel feed hole 1-5, the high speed oil-feed metering-orifice 1-4 pass through oil spout road and the master in inlet channel
Nozzle 1-8 is connected；Air throttle mixed air vessel 1-6-1 is provided with the inlet channel 1-6, the throttle valve device 3 is arranged at
Be provided with air throttle mixed air vessel 1-6-1, in the carburetor body 1 positioned at inlet channel 1-6 sides and with inlet channel 1-6
Parallel idling air duct 1-7, the idling air duct 1-7 runs through carburetor body 1, the idling air duct 1-7
Interior edge airintake direction is disposed with air-fuel mixture chamber 1-7-3 and transition mixed air vessel 1-7-1, the transition mixed air vessel 1-7-
1 by being opened in several transition aperture 1-7-4 and valve mixed air vessel 1-6-1 phases of air throttle mixed air vessel 1-6-1 hole walls
Connect, be additionally provided with the mounting hole intersected with air-fuel mixture chamber 1-7-3 in the carburetor body 1, be provided with the mounting hole
Idling jet 1-11, the idling jet 1-11 pass through the duct being arranged in carburetor body 1 and idling fuel feed hole 1-5
The fuel oil being connected when enabling idling in fuel injection chamber 1-3 enters air-fuel mixture chamber 1-7-3 by idling jet 1-11, described
Transition mixed air vessel 1-7-1 outside is provided with the opening for leading to the external world, and the opening, which is provided with, to be used to block the stifled of the opening
Piece 6.
Tolerance is mixed into during in order to adjust idling, is additionally provided with the idling air duct 1-7 and is mixed positioned at transition
Adjustment hole 1-7-2 on rear side of air chamber 1-7-1, the adjustment hole 1-7-2 is by the tapered hole located at inlet channel 1-6 hole walls with entering
Gas passage 1-6 is connected, and the tapered hole has also been extended laterally perpendicular to idle located at the rear side of air throttle 3, the adjustment hole 1-7-2
Fast air duct 1-7 mounting hole, interior be provided with of the mounting hole can be described along the idle adjusting screw 7 of mounting hole axial movement
The tapered structure in bottom of idle adjusting screw 7, and the terminal end shape of the idle adjusting screw 7 is mutually fitted with taper hole shape
Should.
In order to be led to by the rotation of step motor control choke, the choke 4 including being rotationally connected with air inlet
Air strangler spindle 4-1 in the road 1-6 and choke 4-2 being fixedly arranged on Air strangler spindle 4-1, the upper end of the Air strangler spindle 4-1
Stretch out outside carburetor body 1 and Air strangler spindle Rocker arm 4-3 are installed, the Air strangler spindle Rocker arm 4-3, which is provided with, to be used to insert step
The choke motor slot 4-4 of stepper motor axle, two are provided with the carburetor body 1 on front side of the top of carburetor body 1
The first mounting post 1-1 for being used to install choke stepper motor at both ends.
In order to be led to by the rotation of step motor control air throttle, the throttle valve device 3 including being rotationally connected with air inlet
Throttle plate pin 3-1 in the road 1-6 and air throttle 3-2 being fixedly arranged on throttle plate pin 3-1, the upper end of the throttle plate pin 3-1
Stretch out outside carburetor body 1 and throttle plate pin rocking arm 3-3 is installed, the throttle plate pin rocking arm 3-3, which is provided with, to be used to insert step
The solar term motor slot 3-4 of stepper motor axle, the carburetor body 1 are provided with one and are used to limit throttle plate pin rocking arm 3-3 rotations
The stop screw 5 of gyration, two use positioned at both ends on rear side of the top of carburetor body 1 are provided with the carburetor body 1
In the second mounting post 1-2 of installation air throttle stepper motor.
The operation principle of the present invention is as follows：When engine works, fuel oil, to oil suction chamber 2-4-1, is entered by fuel inlet fitting 2-5-1
Speed air flow is accelerated in gas passage 1-6, through the air in negative pressure channel 1-9 suction chambers 2-2-1, makes negative pressure cavity 2-2-
1 produces the pressure less than diaphragm 2-3 opposite sides, and diaphragm 2-3 is moved in the presence of negative pressure to negative pressure cavity 2-2-1 directions, because of storage
Oil pocket 2-4-3 is connected with the second oilhole 2-4-4, and the air in oil groove 2-2-3 is also sucked so that is pressed in the first oilhole 2-4-
The first movable valve 2-3-1 on 5 is opened, fuel oil through the first oilhole 2-4-5 → oil groove 2-2-3 → the second oilhole 2-4-4 →
The oil groove 2-2-5 of shoe cream room 2-4-3 → fuel feed hole 2-4-2 → second flow to hydraulic fluid port；Now needle 8-2 blocks hydraulic fluid port, works as oil spout
Fuel oil is ejected in chamber 1-3, and pressure reduces in oil pocket, and the air pressure below negative pressure bullet film 2-1 is through pressure hole and extraneous phase
Lead to so as to keep identical with atmospheric pressure, produce pressure differential with negative pressure bullet film 2-1 top, move up negative pressure bullet film 2-1, band
Dynamic thimble 2-1-1 contacts presses rocking arm 8-1 one end on rocking arm 8-1 upwards, and the rocking arm 8-1 other ends then drive needle 8-2 downward
It is mobile, open hydraulic fluid port, fuel oil is flowed in fuel injection chamber 1-3.
During engine start, choke is closed or aperture is smaller, and the gas concentration in inlet channel 1-6 is larger, is ensured
The requirement of the high-concentration oil vapor of engine start, when high engine speeds operate, fuel oil in fuel injection chamber 1-3 is from main burner 1-8
Spray, aditus laryngis of the air through inlet channel 1-6, flowing velocity is accelerated, and the fuel oil of ejection is dispersed into air-fuel mixture mist, final stream
Enter in engine and burnt；During engine idling operation, the fuel oil in fuel injection chamber 1-3 is through idling fuel feed hole 1-5 → idling oil
Metering-orifice 1-11 → idling air duct 1-7 sprays from transition mixed air vessel 1-7-1, and inlet channel 1-6 air passes through trunnion, flows
Dynamic speed is accelerated, and the fuel oil of ejection is dispersed into air-fuel mixture mist, finally flows into engine and is burnt, when engine needs
During lower running speed, choke 4-2, air throttle 3-2 can be closed, less fuel oil is from transition mixed air vessel 1-7-1
Spray, there is provided less air-fuel mixture mist.
Embodiment two：
As shown in Figure 8, Figure 9, the difference of embodiment two and embodiment one is：The diaphragm 2-3 include from top to bottom according to
Gasket seal 2-3-5 and diaphragm three 2-3-8, the first breach 2-3-2 and the second breach 2-3-4 the insertion sealing gasket of secondary setting
Piece 2-3-5 and diaphragm three 2-3-8, the first movable movable valve 2-3-3 of valve 2-3-1 and second are arranged on the 2-3- of diaphragm three
On 8.
Embodiment three：
As shown in Figure 10, the difference of embodiment three and embodiment one is：Air throttle 3-2 is controlled using stepper motor
System, choke 4-2 are used and automatically controlled with the throttle plate pin rocking arm 3-3 torsion springs being connected.During air throttle 3-2 standard-sized sheets, choke 4-2
Also standard-sized sheet.Otherwise air throttle 3-2 is closed or aperture is smaller, and choke 4-2 is also switched off or aperture is smaller.
Example IV：
As shown in figure 11, the difference of example IV and embodiment one is：Air throttle 3-2 is controlled using stepper motor
System, choke 4-2 using self-return torsion spring control, while be provided with bracing wire seat on Air strangler spindle Rocker arm 4-3 can be with hand
The size of dynamic control choke 4-2 apertures.
The object, technical solutions and advantages of the present invention are further described by above-listed preferred embodiment, are answered
Understand, the foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
God any modification, equivalent substitution and improvements made etc., should be included in the scope of the protection with principle.
Claims (10)
1. a kind of power modified form diaphragm type carburator, including carburetor body (1), it is characterised in that：The carburetor body
(1) inlet channel (1-6) of carburetor body (1), inlet channel (1-6) the interior edge air inlet side are provided through in portion of upper body
To being sequentially provided with the rotatably trunnion (1-10) to adjust the choke of air inflow (4), for accelerating speed air flow
And rotatably to adjust the throttle valve device of air-fuel mixture amount (3), the downside of the carburetor body (1) is provided with for storing up
The fuel injection chamber (1-3) of fuel oil is deposited, being provided with the fuel oil being easy in fuel injection chamber (1-3) in carburetor body (1) sprays to inlet channel (1-
6) the oil spout road in, the bottom of the carburetor body (1) are provided with for controlling fuel tank to the negative of fuel injection chamber (1-3) interior oil-feed
Adjusting means (2) is pressed, the negative pressure adjusting device (2) is located at the lower section of fuel injection chamber (1-3).
2. power modified form diaphragm type carburator according to claim 1, it is characterised in that：The negative pressure adjusting device
(2) including the upper shell (2-2) on carburetor body (1) downside, positioned at carburetor body (1) and upper shell (2-
2) the negative pressure bullet film (2-1) between, the negative pressure bullet film (2-1) are arranged at below fuel injection chamber (1-3) in order to negative pressure bullet film (2-
1) it is provided with by the uniform oil immersion of fuel oil in fuel injection chamber (1-3), the upper side of the upper shell (2-2) for negative pressure bullet film
(2-1) imposes the atmospheric pressure chamber (2-2-6) of atmospheric pressure, and the atmospheric pressure chamber (2-2-6) is located under negative pressure bullet film (2-1)
It is square, the pressure hole (2-2-7) for connecting atmospheric pressure chamber (2-2-6) and external pressure is additionally provided with the upper shell (2-2)；
The oil-feed oil circuit for being easy to the fuel oil in fuel tank to enter in fuel injection chamber (1-3), the oil-feed are provided with the carburetor body
Oil circuit and the intersection of fuel injection chamber (1-3) are hydraulic fluid port, are provided with the fuel injection chamber (1-3) for controlling oil-feed oil circuit break-make
Needle valve type oil-inlet mechanism (8), the needle valve type oil-inlet mechanism (8) include be used for block or open hydraulic fluid port needle (8-2) and
Needle (8-2) is controlled to move up and down to block or open the rocking arm (8- of hydraulic fluid port by suction function suffered by negative pressure bullet film (2-1)
1), it is rotatably installed in the middle part of the rocking arm (8-1) by rotary shaft (8-4) on carburetor body (1), needle (8-2) is installed on
One end of rocking arm (8-1), the needle valve type oil-inlet mechanism (8) also include being arranged at below rocking arm (8-1) other end and positioned at negative
Pressure plays the thimble (2-1-1) on film (2-1) and the reset bullet for being used to reset rocking arm (8-1) being arranged above rocking arm (8-1)
Spring (8-3).
3. power modified form diaphragm type carburator according to claim 2, it is characterised in that：The negative pressure adjusting device
(2) lower house (2-4), the diaphragm (2-3) being arranged between upper shell (2-2) and lower house (2-4) and fixed peace are also included
Loaded on the enclosing cover (2-5) on lower house (2-4) lower surface, the downside of the upper shell (2-2) is provided with negative pressure cavity (2-2-1),
The negative pressure cavity (2-2-1) is passed to by the negative pressure channel (1-9) in carburetor body (1) with engine cylinders to be made
Negative pressure cavity (2-2-1) produces negative pressure of vacuum, and the turriform acted on above diaphragm (2-3) is provided with the negative pressure cavity (2-2-1)
Spring (2-2-4) is acted on caused deform by negative pressure of vacuum for a long time in order to reduce diaphragm (2-3).
4. modified form diaphragm type carburator according to claim 3, it is characterised in that：The oil-feed oil circuit includes being arranged at
The oil suction chamber (2-4-1) of lower house (2-4) lower end, be arranged on enclosing cover (2-5) be used for connect oil suction chamber (2-4-1) and fuel tank
Fuel inlet fitting (2-5-1), be arranged at lower house (2-4) upper end and the buffering oil pocket (2-4- being connected with oil suction chamber (2-4-1)
6) the first oilhole (2-4-5) for, being arranged on lower house (2-4) upper surface and being connected with buffering oil pocket (2-4-6), it is arranged at
Second oilhole (2-4-4) of lower house (2-4) upper surface, it is arranged at upper shell (2-2) lower end and is located at the first oilhole (2-4-5)
With above the second oilhole (2-4-4) be used for connect the first oilhole (2-4-5) and the second oilhole (2-4-4) oil groove (2-2-3),
The shoe cream room (2-4-3) that is arranged at lower house (2-4) upper end and is connected with the second oilhole (2-4-4), it is arranged at lower house (2-
4) upper surface and the fuel feed hole (2-4-2) that is connected with shoe cream room (2-4-3) and it is arranged at upper shell (2-2) lower end and is located at
The second oil groove (2-2-5) above fuel feed hole (2-4-2), second oil groove (2-2-5) are connected with hydraulic fluid port, the diaphragm
The first breach (2-3-2) that (2-3) is provided with shape, position matches with oil groove (2-2-3) and the second oil groove (2-2-5) respectively
With the second breach (2-3-4), first breach (2-3-2) is provided with to be used to block above the first oilhole (2-4-5)
First oilhole (2-4-5) and can be opened when diaphragm (2-3) is by negative pressure the first oilhole (2-4-5) cause oil suction chamber (2-4-1) with
The first movable valve (2-3-1) that oil groove (2-2-3) is connected, second breach (2-3-4), which is provided with, is located at fuel feed hole (2-
It is used to block fuel feed hole (2-4-2) and fuel feed hole (2-4-2) can be opened when diaphragm (2-3) is by negative pressure so that entering above 4-2)
The second movable valve (2-3-3) that oilhole (2-4-2) is connected with the second oil groove (2-2-5).
5. power modified form diaphragm type carburator according to claim 3, it is characterised in that：The diaphragm (2-3) includes
Gasket seal (2-3-5), diaphragm one (2-3-6) and the diaphragm two (2-3-7) set gradually from top to bottom, first breach
(2-3-2) and the second breach (2-3-4) insertion gasket seal (2-3-5), diaphragm one (2-3-6) and diaphragm two (2-3-7), it is described
First movable valve (2-3-1) and the second movable valve (2-3-3) are arranged on diaphragm two (2-3-7), (2-3- of diaphragm one
6) it is made of elastomeric material, the diaphragm two (2-3-7) is made of not oil absorption material.
6. power modified form diaphragm type carburator according to claim 3, it is characterised in that：The diaphragm (2-3) includes
The gasket seal (2-3-5) and diaphragm three (2-3-8) set gradually from top to bottom, first breach (2-3-2) and second lack
Mouth (2-3-4) insertion gasket seal (2-3-5) and diaphragm three (2-3-8), the first movable valve (2-3-1) and the second activity
Valve (2-3-3) is arranged on diaphragm three (2-3-8).
7. power modified form diaphragm type carburator according to claim 1, it is characterised in that：In the fuel injection chamber (1-3)
High speed oil-feed metering-orifice (1-4) and idling fuel feed hole (1-5) are provided with, the high speed oil-feed metering-orifice (1-4) is by oil spout road with setting
It is connected in the main burner (1-8) in inlet channel (1-6)；Air throttle mixed air vessel (1- is provided with the inlet channel (1-6)
6-1), the throttle valve device (3) is arranged in air throttle mixed air vessel (1-6-1), and position is provided with the carburetor body (1)
In the idling air duct (1-7) of inlet channel (1-6) side, the idling air duct (1-7) runs through carburetor body
(1), idling air duct (1-7) the interior edge airintake direction is disposed with air-fuel mixture chamber (1-7-3) and transition gaseous mixture
Room (1-7-1), the transition mixed air vessel (1-7-1) by be opened in air throttle mixed air vessel (1-6-1) hole wall several
Transition aperture (1-7-4) is connected with air throttle mixed air vessel (1-6-1), is additionally provided with the carburetor body (1) and oil gas
The intersecting mounting hole of hybrid chamber (1-7-3), idling jet (1-11), the idling jet are installed in the mounting hole
(1-11) be connected by the duct that is arranged in carburetor body (1) with idling fuel feed hole (1-5) idling when fuel injection chamber
Fuel oil in (1-3) can enter air-fuel mixture chamber (1-7-3), the transition mixed air vessel (1- by idling jet (1-11)
Outside 7-1) is provided with the opening for leading to the external world, and the opening is provided with the jam (6) for being used for blocking the opening.
8. power modified form diaphragm type carburator according to claim 7, it is characterised in that：The idling air duct
The adjustment hole (1-7-2) being additionally provided with (1-7) on rear side of transition mixed air vessel (1-7-1), the adjustment hole (1-7-2) pass through
Tapered hole located at air throttle mixed air vessel (1-6-1) hole wall is connected with air throttle mixed air vessel (1-6-1), the tapered hole
On rear side of throttle valve device (3), the adjustment hole (1-7-2) is also extended laterally perpendicular to idling air duct (1-7)
Mounting hole, the mounting hole is interior to be provided with the idle adjusting screw (7) that can be moved axially along mounting hole, the idle adjusting screw
(7) the tapered structure in bottom, and the terminal end shape of the idle adjusting screw (7) is adapted with taper hole shape.
9. power modified form diaphragm type carburator according to claim 1, it is characterised in that：The choke (4)
Including the Air strangler spindle (4-1) being rotationally connected with inlet channel (1-6) and the choke being fixedly arranged on Air strangler spindle (4-1)
(4-2), the upper end of the Air strangler spindle (4-1) stretch out carburetor body (1) outside and are provided with Air strangler spindle rocking arm (4-3), institute
State Air strangler spindle rocking arm (4-3) and be provided with the choke motor slot (4-4) for being used for inserting step motor shaft, the carburetor body
(1) two the first peaces for being used to install choke stepper motor positioned at both ends on front side of carburetor body (1) top are provided with
Fill post (1-1).
10. power modified form diaphragm type carburator according to claim 1, it is characterised in that：The throttle valve device (3)
Including the throttle plate pin (3-1) being rotationally connected with inlet channel (1-6) and the air throttle being fixedly arranged on throttle plate pin (3-1)
(3-2), the upper end of the throttle plate pin (3-1) stretch out carburetor body (1) outside and are provided with throttle plate pin rocking arm (3-3), institute
State throttle plate pin rocking arm (3-3) and be provided with the solar term motor slot (3-4) for being used for inserting step motor shaft, the carburetor body
(1) stop screw (5) for being used to limit throttle plate pin rocking arm (3-3) anglec of rotation, the carburetor body (1) are provided with
On be provided with second mounting posts for being used to install air throttle stepper motor at two both ends on rear side of carburetor body (1) top
(1-2)。
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710367224X | 2017-05-23 | ||
| CN201710367224.XA CN107013371A (en) | 2017-05-23 | 2017-05-23 | Electric car increases journey power modified form diaphragm type carburator |
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| Publication Number | Publication Date |
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| CN107461280A true CN107461280A (en) | 2017-12-12 |
| CN107461280B CN107461280B (en) | 2023-06-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710367224.XA Pending CN107013371A (en) | 2017-05-23 | 2017-05-23 | Electric car increases journey power modified form diaphragm type carburator |
| CN201710710113.4A Active CN107461280B (en) | 2017-05-23 | 2017-08-18 | Dynamic improved diaphragm carburetor |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710367224.XA Pending CN107013371A (en) | 2017-05-23 | 2017-05-23 | Electric car increases journey power modified form diaphragm type carburator |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111550329A (en) * | 2020-06-23 | 2020-08-18 | 福建省大立通用机电制造有限公司 | Novel leak protection oil regulation device |
| CN113464315A (en) * | 2021-08-06 | 2021-10-01 | 福建省福鼎市金星通用机化油器有限公司 | Two-stroke butterfly valve type fuel oil full-automatic mixing vacuum diaphragm carburetor assembly |
| CN114215662A (en) * | 2021-12-21 | 2022-03-22 | 隆鑫通用动力股份有限公司 | Engine and carburetor thereof |
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| US4770822A (en) * | 1986-10-09 | 1988-09-13 | Walbro Far East, Inc. | Diaphragm carburetor for internal combustion engine |
| CN1128840A (en) * | 1995-12-28 | 1996-08-14 | 杨笑风 | Diaphragm type jet carburettor |
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| CN111550329A (en) * | 2020-06-23 | 2020-08-18 | 福建省大立通用机电制造有限公司 | Novel leak protection oil regulation device |
| CN113464315A (en) * | 2021-08-06 | 2021-10-01 | 福建省福鼎市金星通用机化油器有限公司 | Two-stroke butterfly valve type fuel oil full-automatic mixing vacuum diaphragm carburetor assembly |
| CN114215662A (en) * | 2021-12-21 | 2022-03-22 | 隆鑫通用动力股份有限公司 | Engine and carburetor thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107461280B (en) | 2023-06-30 |
| CN107013371A (en) | 2017-08-04 |
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