CN110608110A - Structure of multi-cavity carburetor - Google Patents
Structure of multi-cavity carburetor Download PDFInfo
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- CN110608110A CN110608110A CN201910979764.2A CN201910979764A CN110608110A CN 110608110 A CN110608110 A CN 110608110A CN 201910979764 A CN201910979764 A CN 201910979764A CN 110608110 A CN110608110 A CN 110608110A
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- oil
- chamber
- air pressure
- cavity
- throttle
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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
- 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
- F02M17/34—Other carburettors combined or associated with other apparatus, e.g. air filters
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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
- F02M19/00—Details, component parts, or accessories of carburettors, not provided for in, or of interest apart from, the apparatus of groups F02M1/00 - F02M17/00
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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
- F02M7/00—Carburettors with means for influencing, e.g. enriching or keeping constant, fuel/air ratio of charge under varying conditions
- F02M7/23—Fuel aerating devices
- F02M7/24—Controlling flow of aerating air
Abstract
The invention discloses a structure of a multi-cavity carburetor, which comprises a carburetor body, wherein the carburetor body comprises an oil-gas mixing chamber shell, a first throat cavity and a second throat cavity are arranged in the carburetor body in parallel in a penetrating manner, the upper ends of the first throat cavity and the second throat cavity are respectively and symmetrically provided with a first vacuum membrane pad chamber and a second vacuum membrane pad chamber, the interiors of the first vacuum membrane pad chamber and the second vacuum membrane pad chamber are respectively and transversely glued with a first vacuum membrane and a second vacuum membrane, the lower end air chambers of the first vacuum membrane and the second vacuum membrane are respectively communicated with the first throat cavity and the second throat cavity, the upper end air chambers of the first vacuum membrane and the second vacuum membrane are respectively communicated with the interiors of two air pressure detection devices, and the two air pressure detection devices are respectively connected with an air pressure regulating valve through air pipes. The multi-cavity carburetor has a good regulation and control effect on the working state of an engine, reduces manual adjustment and test steps, and better increases the practicability of the carburetor.
Description
Technical Field
The invention mainly relates to the technical field of carburetors, in particular to a structure of a multi-cavity carburetor.
Background
A carburetor (carburetor) is a mechanical device that mixes a certain proportion of gasoline with air under the action of vacuum generated by the operation of an engine. A carburetor is a precise mechanical device which utilizes the kinetic energy of the intake air flow to atomize gasoline. Its important role in the engine may be referred to as the engine's "heart". The complete device comprises a starting device, an idling device, a medium load device, a full load device and an accelerating device. The carburetor can carry out proportioning according to different working state requirements of the engine to obtain corresponding concentration and output corresponding amount of mixed gas, and in order to enable the mixed gas to be uniformly mixed, the carburetor also has the effect of atomizing fuel oil so as to enable a machine to normally run.
The carburetor is different according to the air flow direction at the throat, and the modern carburetor can be divided into an updraft type carburetor, a downdraft type carburetor and a downdraft type carburetor; according to different numbers of the throats, the modern carburetor can be divided into a single-throat carburetor and a multi-throat carburetor; modern carburettors can be divided into two types, single-chamber and multi-chamber, depending on the number of mixing chambers.
The existing multi-cavity carburetor is mainly a double-cavity split type carburetor, but the problem that the air pressure ratio is difficult to adjust exists, manual continuous adjustment and try are needed, the corresponding air inlet proportion and the corresponding mixing ratio also need to be adjusted, the process is very complicated, and the practicability of the carburetor is greatly reduced.
Therefore, it is necessary to make better changes to the multi-chamber carburetor to achieve the effect of automatically adjusting the air pressure ratio and enhance the practicability of the carburetor.
Disclosure of Invention
The present invention provides a multi-chamber carburetor structure, which is used for solving the technical problems in the background technology.
The technical scheme adopted by the invention for solving the technical problems is as follows:
a structure of a multi-cavity carburetor comprises a carburetor body, wherein the carburetor body comprises an oil-gas mixing chamber shell, a throttle section shell and an air inlet section shell, and the bottom of the oil-gas mixing chamber shell is fixedly connected with a float chamber oil shell through bolts;
a first throat cavity and a second throat cavity penetrate through the interior of the oil-gas mixing chamber shell side by side, a first vacuum film cushion chamber and a second vacuum film cushion chamber are symmetrically arranged at the upper ends of the first throat cavity and the second throat cavity, a first vacuum film and a second vacuum film are transversely glued in the first vacuum film cushion chamber and the second vacuum film cushion chamber, and lower air chambers of the first vacuum film and the second vacuum film are respectively communicated with the first throat cavity and the second throat cavity;
air pressure detection devices are symmetrically connected to two sides of the top of the oil-gas mixing chamber shell, air pressure detection cavities are formed in the two air pressure detection devices, the bottoms of the two air pressure detection cavities are respectively communicated with the upper end air chambers of the first vacuum membrane and the second vacuum membrane, and air pressure detection sensors are arranged on the outer walls of the two air pressure detection devices in a penetrating mode;
and the top parts of the two air pressure adjusting valves are respectively connected with the top parts of the two air pressure detection devices through air pipes.
Preferably, both ends of the first throat cavity and the second throat cavity penetrate through the throttle valve section shell and the air inlet section shell, a first throttle valve baffle and a second throttle valve baffle are arranged in one end cavity of the throttle valve section shell of the first throat cavity and the second throat cavity, and a first air inlet valve baffle and a second air inlet valve baffle are arranged in one end cavity of the air inlet section shell of the first throat cavity and the second throat cavity.
Preferably, first throttle blade and second throttle blade all run through the axostylus axostyle throttle section casing extends to the both sides of throttle section casing are connected with throttle valve adjusting part, two throttle valve adjusting part all including cast joint in the first fixed frame of oil-gas mixing chamber casing both sides, two all be equipped with first electromagnetic control valve in the first fixed frame, two first electromagnetic control valve is close to the one end of throttle section casing all is connected with first spring telescopic link, two the front end of first spring telescopic link all is the rotation with the top of first adjusting connecting rod and is connected, two the bottom of first adjusting connecting rod all has spring restorer through the checkpost joint, and two the inboard of spring restorer respectively with the axostylus axostyle fixed connection of first throttle blade and second throttle blade.
Preferably, first air inlet door separation blade and second air inlet door separation blade all run through the axostylus axostyle air inlet door section casing extends to the both sides of air inlet door section casing are connected with intake valve adjusting part, two intake valve adjusting part all including cast joint in the fixed frame of second of oil-gas mixing room casing both sides, two the fixed frame of second is located two the upper end of first fixed frame, two all be equipped with second electromagnetic control valve, two in the fixed frame of second electromagnetic control valve is close to the one end of air inlet door section casing all is connected with second spring telescopic link, two the front end of second spring telescopic link all is connected with the steel wire coupler body, two the gib head of steel wire coupler body all is the rotation through the top of catching on single-hole connecting block and second adjusting connecting rod and is connected, two the second adjusting connecting rod is the arc, and two the bottom inboard of second adjusting connecting rod respectively with first air inlet door separation blade and second air inlet door separation blade are fixed And (4) fixing connection.
Preferably, two the bent piece has all been welded to the inboard of air pressure regulating valve, two the bottom of bent piece all welds in on the air-oil mixing chamber casing, and two the inside of air pressure regulating valve all is equipped with the air pressure adjustment telescopic link, two the air pressure adjustment telescopic link runs through two the bottom casing of air pressure regulating valve extends to two the equal sliding connection of lower extreme of air pressure regulating valve has the sleeve, two telescopic inboard all with the outer wall cast joint of air-oil mixing chamber casing is connected.
Preferably, the inside of the oil shell of the float chamber is vertically provided with a permeable membrane, two sides of the permeable membrane are respectively provided with a main oil supply cavity and an auxiliary oil supply cavity, the inside of the main oil supply cavity is provided with a main quantity channel pipe, the inside of the auxiliary oil supply cavity is provided with an auxiliary channel pipe, the tops of the main quantity channel pipe and the auxiliary channel pipe are cast-welded at the bottom of the oil-gas mixing chamber shell, and the bottoms of the main quantity channel pipe and the auxiliary channel pipe are not in contact with the bottom end of the inside of the oil shell of the float chamber.
Preferably, the outer bottom of the oil shell of the float chamber corresponds to the lower end of the main oil supply cavity and is provided with a plunger regulating valve, a thimble of the plunger regulating valve penetrates through the bottom of the oil shell of the float chamber and extends to an oil inlet at the bottom of the main-volume channel pipe, the bottom of the plunger regulating valve is connected with an oil inlet regulator through a telescopic linkage connecting rod structure, and the oil inlet regulator is connected with the outer wall of one side of the oil shell of the float chamber in a cast-weld mode.
Preferably, the outer bottom of the oil shell of the float chamber is provided with an oil drain valve corresponding to the lower end of the auxiliary oil supply cavity, and an oil drain screw is connected in the outer side wall shell of the oil drain valve through thread meshing.
Preferably, the volume of the main oil supply cavity is larger than that of the auxiliary oil supply cavity, and the volume ratio is 2: 1.
Preferably, be equipped with the oil return filter on the front end lateral wall of float chamber oil shell, the top through connection of oil return filter has the oil return passway, the oil return passway is located in the lower extreme interval of first throttle flap and second throttle flap, just the inside of oil return filter with the inside of float chamber oil shell is linked together.
Compared with the prior art, the invention has the beneficial effects that:
the invention sets the first vacuum film cushion chamber and the second vacuum film cushion chamber which are communicated with each other on the upper end of the first throat pipe chamber and the second throat pipe chamber which are arranged in parallel in the oil-gas mixing chamber, so that the elastic deformation of the first vacuum film and the second vacuum film can be caused when the mixed air pressure is overhigh, the pressure space is expanded, then the air pressure in the air pressure detection chambers in the two communicated air pressure detection devices is forced to be increased by extruding the air pressure in the other side spaces of the first vacuum film and the second vacuum film, the air pressure in the two air pressure detection devices is adjusted in the corresponding air pressure adjusting valve through the conduction of the air pipe, the air pressure in the two air pressure detection devices is detected by the two air pressure detection sensors, the signal of which the pressure needs to be adjusted is received on the intelligent controller with a set quantitative value, thereby controlling the adjustment of the air inflow amount, the oil inflow amount and the opening ratio of the air throttle valve to reach the normal mixed, the fuel-saving and environment-friendly carburetor has better regulation and control effects on fuel saving, environmental protection and convenience of the carburetor, reduces manual adjustment and test steps, and better increases the practicability of the carburetor.
The present invention will be explained in detail below with reference to the drawings and specific embodiments.
Drawings
FIG. 1 is a schematic view of the external structure of the carburetor body of the present invention;
FIG. 2 is a sectional view of the internal structure of the carburetor body of the present invention;
FIG. 3 is an enlarged view of area A of FIG. 1;
FIG. 4 is an enlarged view of area B of FIG. 1;
FIG. 5 is an enlarged view of area C of FIG. 2;
FIG. 6 is an enlarged view of area D of FIG. 2;
fig. 7 is an enlarged view of region E in fig. 2.
Description of the drawings: 1. a carburetor body; 11. an oil-gas mixing chamber housing; 111. an air pressure detecting device; 111a, an air pressure detection sensor; 111b, an air pressure detection cavity; 112. an air pressure regulating valve; 112a, bent sheets; 112b, an air pressure adjusting telescopic rod; 112c, a sleeve; 113. an intake valve adjustment assembly; 113a, a second fixed frame; 113b, a second electromagnetic regulating valve; 113b-1, a second spring telescopic rod; 113b-2, a steel wire hook body; 113c, a second adjusting link; 113c-1, a single-hole connecting block; 114. a throttle adjustment assembly; 114a, a first fixed frame; 114b, a first electromagnetic regulating valve; 114b-1, a first spring telescopic rod; 114c, a spring return; 114c-1, a first adjusting link; 115. a first throat cavity; 115a, a first vacuum membrane pad chamber; 115b, a first vacuum film; 116. a second throat cavity; 116a, a second vacuum membrane pad chamber; 116b, a second vacuum film; 12. a throttle body housing; 121. a first throttle blade; 122. a second throttle blade; 123. an oil return passage port; 13. an intake valve section housing; 131. a first intake valve stop; 132. a second intake valve stop; 14. a float chamber oil shell; 14a, a main oil supply cavity; 14b, a secondary oil supply cavity; 14c, a main volume channel pipe; 14d, an auxiliary channel pipe; 14e, a permeable membrane; 141. a plunger regulating valve; 142. an oil return filter; 143. an oil inlet regulator; 144. an oil drain valve; 144a, oil drain screw.
Detailed Description
In order to facilitate an understanding of the invention, the invention will now be described more fully hereinafter with reference to the accompanying drawings, in which several embodiments of the invention are shown, but which may be embodied in different forms and not limited to the embodiments described herein, but which are provided so as to provide a more thorough and complete disclosure of the invention.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may be present, and when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present, as the terms "vertical", "horizontal", "left", "right" and the like are used herein for descriptive purposes only.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs, and the knowledge of the terms used herein in the specification of the present invention is for the purpose of describing particular embodiments and is not intended to limit the present invention, and the term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.
In a first embodiment, please refer to fig. 1, 2 and 5, a multi-chamber carburetor structure includes a carburetor body 1, the carburetor body 1 includes an oil-gas mixing chamber housing 11, a throttle section housing 12 and an intake section housing 13, a float chamber oil casing 14 is fixedly connected to the bottom of the oil-gas mixing chamber housing 11 through bolts; a first throat cavity 115 and a second throat cavity 116 are arranged in the oil-gas mixing chamber shell 11 in a parallel penetrating manner, a first vacuum film cushion chamber 115a and a second vacuum film cushion chamber 116a are symmetrically arranged at the upper ends of the first throat cavity 115 and the second throat cavity 116, a first vacuum film 115b and a second vacuum film 116b are transversely glued in the first vacuum film cushion chamber 115a and the second vacuum film cushion chamber 116a, and lower air chambers of the first vacuum film 115b and the second vacuum film 116b are respectively communicated with the first throat cavity 115 and the second throat cavity 116; the two sides of the top of the oil-gas mixing chamber shell 11 are symmetrically connected with air pressure detection devices 111, air pressure detection cavities 111b are respectively arranged inside the two air pressure detection devices 111b, the bottoms of the two air pressure detection cavities 111b are respectively communicated with the upper end air chambers of the first vacuum membrane 115b and the second vacuum membrane 116b, and air pressure detection sensors 111a are respectively arranged on the outer walls of the two air pressure detection devices 111 in a penetrating manner; the outer sides of the two air pressure detection devices 111 are respectively provided with an air pressure regulating valve 112, and the top parts of the two air pressure regulating valves 112 are respectively connected with the top parts of the two air pressure detection devices 111 through air pipes; the inner sides of the two air pressure adjusting valves 112 are welded with bent pieces 112a, the bottoms of the bent pieces 112a are welded on the oil-gas mixing chamber shell 11, air pressure adjusting telescopic rods 112b are arranged inside the two air pressure adjusting valves 112, the two air pressure adjusting telescopic rods 112b penetrate through the bottom shells of the two air pressure adjusting valves 112 and extend to the two lower ends of the air pressure adjusting valves 112 to be connected with sleeves 112c in a sliding mode, and the inner sides of the sleeves 112c are connected with the outer wall of the oil-gas mixing chamber shell 11 in a cast-weld mode. In this embodiment, after the air pressures in the two air pressure detection chambers 111b are compressed and increased, the air pressure is reduced by means of each air pressure adjusting valve 112 correspondingly fixed on the oil-gas mixing chamber shell 11, so that the two air pressure adjusting telescopic rods 112b extend downwards due to the increase of the air pressure, and slide downwards in the two sleeves 112c at the lower end, thereby achieving the purpose of quickly relieving the air pressure, and providing time for the two air pressure detection sensors 111a to detect the empty window period for adjusting the air intake amount, the oil intake amount and the throttle opening and closing ratio.
In the second embodiment, please refer to fig. 1-4 again, both ends of the first throat cavity 115 and the second throat cavity 116 penetrate through the throttle body housing 12 and the intake body housing 13, and the first throttle blade 121 and the second throttle blade 122 are disposed in the cavity at one end of the throttle body housing 12 of the first throat cavity 115 and the second throat cavity 116, and the first intake blade 131 and the second intake blade 132 are disposed in the cavity at one end of the intake body housing 13 of the first throat cavity 115 and the second throat cavity 116; the first throttle blade 121 and the second throttle blade 122 penetrate through the throttle body casing 12 through a shaft rod and extend to two sides of the throttle body casing 12 to be connected with throttle adjusting assemblies 114, each of the two throttle adjusting assemblies 114 comprises first fixed frames 114a cast-welded to two sides of the oil-gas mixing chamber casing 11, first electromagnetic adjusting valves 114b are arranged in the two first fixed frames 114a, one ends, close to the throttle body casing 12, of the two first electromagnetic adjusting valves 114b are connected with first spring telescopic rods 114b-1, the front ends of the two first spring telescopic rods 114b-1 are rotatably connected with the top of a first adjusting connecting rod 114c-1, the bottom of the two first adjusting connecting rods 114c-1 are respectively connected with spring repositors 114c through clips, and the inner sides of the two spring repositors 114c are respectively connected with the shaft blocking blades 121 of the first throttle blade 121 and the shaft blocking blades 122 of the second throttle blade 122 The rods are fixedly connected; the first air inlet valve baffle 131 and the second air inlet valve baffle 132 penetrate through the air inlet valve section shell 13 through shaft rods and extend to the two sides of the air inlet valve section shell 13 to be connected with the air inlet valve adjusting components 113, the two air inlet valve adjusting components 113 comprise second fixed frames 113a cast-welded on the two sides of the oil-gas mixing chamber shell 11, the two second fixed frames 113a are positioned at the upper ends of the two first fixed frames 114a, second electromagnetic adjusting valves 113b are arranged in the two second fixed frames 113a, one ends of the two second electromagnetic adjusting valves 113b, which are close to the air inlet valve section shell 13, are connected with second spring telescopic rods 113b-1, the front ends of the two second spring telescopic rods 113b-1 are connected with steel wire hook bodies 113b-2, and hook heads of the two steel wire hook bodies 113b-2 are rotatably connected with the top of the second adjusting connecting rod 113c through hooking single-1, the two second adjusting connecting rods 113c are arc-shaped, and the inner sides of the bottoms of the two second adjusting connecting rods 113c are respectively and fixedly connected with the first intake valve blocking piece 131 and the second intake valve blocking piece 132. In the embodiment, the two first electromagnetic adjusting valves 114b fixed on the two first fixed frames 114a receive an adjusting command to control the corresponding two first spring telescopic rods 114b-1 to perform telescopic movement, so that the corresponding two first adjusting links 114c-1 are linked, and the two spring repositioners 114c are rotated to adjust the opening and closing ratio of the first throttle blade 121 and the second throttle blade 122, and the adjustment of the first intake valve blade 131 and the second intake valve blade 132 controls the corresponding second spring telescopic rods 113b-1 to perform telescopic movement by receiving the adjusting command through the two second electromagnetic adjusting valves 113b fixed on the two second fixed frames 113a, so that the corresponding two steel wire hook bodies 113b-2 hook each single-hole connecting block 113c-1 to drive each second adjusting link 113c connected to perform linkage, thereby, the first intake valve stopper 131 and the second intake valve stopper 132 are rotated to adjust the intake air ratio.
In a third embodiment, please refer to fig. 1, 2, 6 and 7 again, a permeable membrane 14e is vertically disposed inside the float chamber oil shell 14, a main oil supply cavity 14a and an auxiliary oil supply cavity 14b are respectively disposed on two sides of the permeable membrane 14e, a volume of the main oil supply cavity 14a is greater than a volume of the auxiliary oil supply cavity 14b, a volume ratio is 2:1, a main quantity channel pipe 14c is disposed inside the main oil supply cavity 14a, an auxiliary channel pipe 14d is disposed inside the auxiliary oil supply cavity 14b, tops of the main quantity channel pipe 14c and the auxiliary channel pipe 14d are cast-welded to the bottom of the oil-gas mixing chamber shell 11, and bottoms of the main quantity channel pipe 14c and the auxiliary channel pipe 14d are not in contact with an inner bottom end of the float chamber oil shell 14; a plunger regulating valve 141 is arranged at the lower end of the outer bottom of the float chamber oil shell 14 corresponding to the main oil supply cavity 14a, a thimble of the plunger regulating valve 141 penetrates through the bottom of the float chamber oil shell 14 and extends to an oil inlet at the bottom of the main flow channel pipe 14c, the bottom of the plunger regulating valve 141 is connected with an oil inlet regulator 143 through a telescopic linkage connecting rod structure, and the oil inlet regulator 143 is connected with the outer wall of one side of the float chamber oil shell 14 in a cast welding manner; an oil drain valve 144 is arranged at the outer bottom of the oil shell 14 of the float chamber corresponding to the lower end of the auxiliary oil supply cavity 14b, and an oil drain screw 144a is connected in the outer side wall shell of the oil drain valve 144 through thread meshing; the side wall of the front end of the float chamber oil shell 14 is provided with an oil return filter 142, the top of the oil return filter 142 is connected with an oil return passage port 123 in a penetrating manner, the oil return passage port 123 is located in the lower end interval of the first throttle valve blocking piece 121 and the second throttle valve blocking piece 122, and the inside of the oil return filter 142 is communicated with the inside of the float chamber oil shell 14. In this embodiment, the permeable membrane 14e is disposed in the float chamber oil shell 14 to effectively separate the primary oil supply cavity 14a and the secondary oil supply cavity 14b in a ratio of 2:1, so that the oil quantities of the two cavities can be kept at a consistent height, but the oil products are not completely mixed, the primary quantity channel tube 14c in the primary oil supply cavity 14a can deliver the fuel oil into the first throat cavity 115 for mixing, the oil inlet quantity is controlled by using the plunger regulating valve 141 in cooperation with the oil inlet regulator 143, when the oil inlet quantity is reduced, the oil inlet regulator 143 controls the thimble in the plunger regulating valve 141 to move upwards through the telescopic linkage connecting rod structure, so that the oil inlet of the primary quantity channel tube 14c is reduced until the oil inlet is completely closed, thereby achieving the effect of controlling the oil, the secondary channel tube 14d in the secondary oil supply cavity 14b supplies the oil to the throat cavity 116, and assists in providing additional support for oil supply when the rapid response of the engine is in the second throat cavity 115 when the engine is in urgent need of power increase, the oil drain valve 144 at the bottom of the auxiliary oil supply cavity 14b discharges the fuel oil through the loosening of the oil drain screw 144a, mainly discharging the accumulated oil dirt for a long time, so as to achieve the purpose of cleaning the interior of the oil shell 14 of the float chamber, and the fuel oil collected at the oil return passage port 123 is filtered by the oil return filter 142 and then returns to the interior of the oil shell 14 of the float chamber, so that the cleanness degree of the interior of the oil shell 14 of the float chamber is further maintained.
The specific process of the invention is as follows:
firstly, after the multi-cavity carburetor of the invention is installed on a corresponding engine, a fuel supply system is connected, the engine is started to work, at the moment, a first air inlet baffle plate 131 is linked to open an air inlet through a corresponding second electromagnetic regulating valve 113b to be matched with a second spring telescopic rod 113b-1, a steel wire hook body 113b-2, a single-hole connecting block 113c-1 and a second regulating connecting rod 113c, fuel conveyed from a first throat cavity 115 and a main quantity channel pipe 14c is mixed, then an air outlet is linked to open an air outlet through a corresponding first electromagnetic regulating valve 114b to be matched with a first spring telescopic rod 114b-1, a first regulating connecting rod 114c-1 and a spring restorer 114c at a first air throttle baffle plate 121, and when the engine needs to increase power, the intake port is opened in the same manner by the second throttle blade 122, the fuel supplied into the second throat chamber 116 and the auxiliary port 14d is mixed, the exhaust port is opened in the same manner by the second throttle blade 122, the additional fuel-air mixture required by the engine is supplied into the cylinder, and, during the operation of the engine, the proportional demand for the air pressure is constantly changed, resulting in a change in the air-fuel mixture pressure ratio in the carburetor, which is changed by elastically deforming the first vacuum membrane 115b and the second vacuum membrane 116b in the first vacuum membrane pad chamber 115a and the second vacuum membrane pad chamber 116a, and when the air pressure is too high, the air pressure in the two air pressure detection chambers 111b is compressed, and the air pressure is reduced by the air pressure regulating valves 112 each of which is fixed to the oil-air mixing chamber housing 11, and the air pressure is increased, resulting in the two air pressure regulating telescopic rods 112b extending downward, the air pressure sensor 111a slides downwards in the two sleeves 112c at the lower end to perform temporary pressure reduction, and meanwhile, the detection data of the two air pressure detection sensors 111a are received by the intelligent controller so as to adjust the air intake amount, the oil supply amount and the throttle opening and closing ratio.
The invention has been described above with reference to the accompanying drawings, it is obvious that the invention is not limited to the specific implementation in the above-described manner, and it is within the scope of the invention to adopt such insubstantial modifications of the inventive concept and solution, or to apply the inventive concept and solution directly to other applications without such modifications.
Claims (10)
1. The structure of the multi-cavity carburetor comprises a carburetor body (1), and is characterized in that the carburetor body (1) comprises an oil-gas mixing chamber shell (11), a throttle section shell (12) and an air inlet section shell (13), wherein the bottom of the oil-gas mixing chamber shell (11) is fixedly connected with a float chamber oil shell (14) through bolts;
a first throat cavity (115) and a second throat cavity (116) are arranged in the oil-gas mixing chamber shell (11) in a parallel penetrating mode, the upper ends of the first throat cavity (115) and the second throat cavity (116) are symmetrically provided with a first vacuum film cushion chamber (115 a) and a second vacuum film cushion chamber (116 a), a first vacuum film (115 b) and a second vacuum film (116 b) are transversely glued inside the first vacuum film cushion chamber (115 a) and the second vacuum film cushion chamber (116 a), and lower end air chambers of the first vacuum film (115 b) and the second vacuum film (116 b) are respectively communicated with the first throat cavity (115) and the second throat cavity (116);
air pressure detection devices (111) are symmetrically connected to two sides of the top of the oil-gas mixing chamber shell (11), air pressure detection cavities (111 b) are formed in the two air pressure detection devices (111), the bottoms of the two air pressure detection cavities (111 b) are respectively communicated with the upper end air chambers of the first vacuum membrane (115 b) and the second vacuum membrane (116 b), and air pressure detection sensors (111 a) penetrate through the outer walls of the two air pressure detection devices (111);
and air pressure regulating valves (112) are arranged on the outer sides of the two air pressure detection devices (111), and the top parts of the two air pressure regulating valves (112) are respectively connected with the top parts of the two air pressure detection devices (111) through air pipes.
2. A multi-chamber carburetor structure according to claim 1, wherein both ends of the first throat cavity (115) and the second throat cavity (116) penetrate the throttle body housing (12) and the intake body housing (13), and a first throttle flap (121) and a second throttle flap (122) are respectively arranged in one end cavity of the throttle body housing (12) of the first throat cavity (115) and the second throat cavity (116), and a first intake flap (131) and a second intake flap (132) are respectively arranged in one end cavity of the intake body housing (13) of the first throat cavity (115) and the second throat cavity (116).
3. The structure of the multi-chamber carburetor according to claim 2, wherein the first throttle blade (121) and the second throttle blade (122) extend through the throttle body housing (12) through a shaft rod to both sides of the throttle body housing (12) and are connected with throttle adjusting assemblies (114), both throttle adjusting assemblies (114) comprise first fixed frames (114 a) cast-welded to both sides of the oil-gas mixing chamber housing (11), a first electromagnetic adjusting valve (114 b) is arranged in both first fixed frames (114 a), one end of both first electromagnetic adjusting valves (114 b) close to the throttle body housing (12) is connected with a first telescopic spring rod (114 b-1), and the front ends of both first telescopic spring rods (114 b-1) are rotatably connected with the top of a first adjusting connecting rod (114 c-1), the bottoms of the two first adjusting connecting rods (114 c-1) are respectively clamped with a spring restorer (114 c) through a clamp, and the inner sides of the two spring restorers (114 c) are respectively fixedly connected with shaft rods of the first throttle valve blocking piece (121) and the second throttle valve blocking piece (122).
4. The structure of a multi-chamber carburetor according to claim 2, wherein the first intake valve stop piece (131) and the second intake valve stop piece (132) extend through the intake valve section housing (13) through shaft rods to both sides of the intake valve section housing (13) and are connected with intake valve adjusting assemblies (113), each of the intake valve adjusting assemblies (113) comprises a second fixed frame (113 a) cast-welded to both sides of the oil-gas mixing chamber housing (11), the two second fixed frames (113 a) are located at the upper ends of the two first fixed frames (114 a), each of the two second fixed frames (113 a) is provided with a second electromagnetic adjusting valve (113 b), one end of each of the two second electromagnetic adjusting valves (113 b) close to the intake valve section housing (13) is connected with a second telescopic spring rod (113 b-1), the front ends of the two second spring telescopic rods (113 b-1) are connected with steel wire hook bodies (113 b-2), hook heads of the two steel wire hook bodies (113 b-2) are rotatably connected with the top of a second adjusting connecting rod (113 c) through hooking a single-hole connecting block (113 c-1), the second adjusting connecting rod (113 c) is arc-shaped, and the inner sides of the bottoms of the second adjusting connecting rods (113 c) are fixedly connected with a first air inlet valve blocking piece (131) and a second air inlet valve blocking piece (132) respectively.
5. A multi-chamber carburetor structure according to claim 1, wherein a bent piece (112 a) is welded to the inner side of each of the two barometric pressure regulating valves (112), the bottom of each of the two bent pieces (112 a) is welded to the air-fuel mixing chamber housing (11), a barometric pressure regulating telescopic rod (112 b) is provided inside each of the two barometric pressure regulating valves (112), the two barometric pressure regulating telescopic rods (112 b) extend through the bottom housings of the two barometric pressure regulating valves (112) to the lower ends of the two barometric pressure regulating valves (112) and are slidably connected with a sleeve (112 c), and the inner sides of the two sleeves (112 c) are cast-welded to the outer wall of the air-fuel mixing chamber housing (11).
6. A multi-chamber carburetor structure according to claim 1, characterized in that a permeable membrane (14 e) is vertically provided inside the float chamber oil casing (14), a main oil supply chamber (14 a) and an auxiliary oil supply chamber (14 b) are provided on both sides of the permeable membrane (14 e), a main fuel passage pipe (14 c) is provided inside the main oil supply chamber (14 a), an auxiliary fuel passage pipe (14 d) is provided inside the auxiliary oil supply chamber (14 b), and the top portions of the main fuel passage pipe (14 c) and the auxiliary fuel passage pipe (14 d) are cast-welded to the bottom portion of the oil-gas mixing chamber housing (11), and the bottom portions of the main fuel passage pipe (14 c) and the auxiliary fuel passage pipe (14 d) are not in contact with the inner bottom end of the float chamber oil casing (14).
7. A multi-chamber carburetor structure according to claim 6, characterized in that a plunger regulating valve (141) is provided at the outer bottom of the float chamber oil housing (14) corresponding to the lower end of the main oil supply chamber (14 a), a needle of the plunger regulating valve (141) extends through the bottom of the float chamber oil housing (14) to the bottom oil inlet of the main volume passage pipe (14 c), and an oil inlet regulator (143) is connected to the bottom of the plunger regulating valve (141) through a telescopic linkage connecting rod structure, and the oil inlet regulator (143) is connected to the outer wall of one side of the float chamber oil housing (14) by cast welding.
8. A multi-chamber carburetor structure according to claim 6, characterized in that an oil drain valve (144) is provided at the outer bottom of the fuel bowl (14) corresponding to the lower end of the secondary fuel supply chamber (14 b), and a fuel drain screw (144 a) is threadedly engaged in the outer wall housing of the oil drain valve (144).
9. A multi-chamber carburettor construction according to claim 6 wherein the primary feed chamber (14 a) has a greater volume than the secondary feed chamber (14 b) in a ratio of 2: 1.
10. A multi-chamber carburetor structure according to claim 6, characterized in that an oil return filter (142) is provided on a front end side wall of the float chamber oil casing (14), an oil return port (123) is connected through a top portion of the oil return filter (142), the oil return port (123) is located in a lower end space between the first throttle blade (121) and the second throttle blade (122), and an interior of the oil return filter (142) communicates with an interior of the float chamber oil casing (14).
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| CN201910979764.2A CN110608110B (en) | 2019-10-15 | 2019-10-15 | Structure of multi-cavity carburetor |
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| CN110030117A (en) * | 2019-04-21 | 2019-07-19 | 福建省福鼎市金星通用机化油器有限公司 | A kind of twin barrel carburetor |
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| US4298549A (en) * | 1979-10-29 | 1981-11-03 | Woodworth Carburetor Corp. Of Nevada | Carburetor |
| US20050173815A1 (en) * | 2004-02-06 | 2005-08-11 | Mueller Gregory L. | Fuel enrichment system for carburetors for internal combustion engines |
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| CN110608110B (en) | 2021-02-26 |
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