CN201474797U - Carburetor - Google Patents
Carburetor Download PDFInfo
- Publication number
- CN201474797U CN201474797U CN2009201897625U CN200920189762U CN201474797U CN 201474797 U CN201474797 U CN 201474797U CN 2009201897625 U CN2009201897625 U CN 2009201897625U CN 200920189762 U CN200920189762 U CN 200920189762U CN 201474797 U CN201474797 U CN 201474797U
- Authority
- CN
- China
- Prior art keywords
- fuel oil
- oil duct
- oil
- door
- working connection
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- Lubrication Of Internal Combustion Engines (AREA)
Abstract
The utility model discloses a carburetor which comprises a carburetor body. A fuel oil chamber, a main fuel oil way, an air damper hole, a choke door plate, a throat and an air damper plate are arranged in the carburetor body, wherein the choke door plate, the throat and the air damper door plate are in tandem and sequential arrangement in the air damper hole; fuel oil is sucked into the fuel oil chamber through a fuel oil inlet device, and is communicated with the main fuel oil way through a fuel oil channel; a gas way communicated with the main fuel oil way is arranged at the choke door plate in the carburetor body; venturi tubes are arranged between the gas way and the outlets of the fuel oil channel; a fuel oil channel III is arranged between the main fuel oil way and the air damper hole; the outlet of the fuel oil channel III is arranged between the throat and the air damper plate; the fuel oil channels include a fuel oil channel I and a fuel oil channel II; the fuel oil channel I is connected with a high-speed mixed gas adjusting screw; the fuel oil channel II is connected with a low-speed mixed gas adjusting screw; and the gas way is respectively communicated with the outlet of the fuel oil channel I and the outlet of the fuel oil channel II through a venturi tube I and a venturi tube II. The carburetor has reliable operation and easy controlled flow, and the exhaust emission value of an engine is lower.
Description
Technical field
The utility model relates to a kind of Carburetor that mainly is applicable in the general small-size two stroke engine.
Background technique
Because environmental protection consciousness is more and more stronger, the country of many prosperities has worked out Abgasgesetz in the world, limits the discharging of all kinds of motors, reduces toxic emission, reduces the greenhouse effect of atmosphere.Many for this reason countries formulate Abgasgesetz according to the situation of oneself, have stipulated the emission limit of motor.For reaching this requirement, many technology are applied in the motor.As component on the motor, Carburetor is most important to the influence of engine performance, and the discharging to engine exhaust simultaneously also influences great.The effect of Carburetor is with the gasoline of some and air mixing, is responsible for the ratio between correct blended fuel oil and the air, so that normal working of engine.If do not have enough fuel oils and air mixing, motor will turn round under " oil-poor " state so, may stop, and also may damage motor; If excessive fuel oil and air mixing are arranged, motor will turn round under " rich oil " state so, produce a large amount of waste gas in the running, not only waste fuel oil, also cause serious environmental pollution.
The model utility content
The purpose of this utility model is to provide Carburetor, and the toxic emission that can effectively solve available engine is higher, causes environmental pollution problems.
In order to solve the problems of the technologies described above, the utility model adopts following technological scheme: Carburetor, comprise the Carburetor body, it is characterized in that: be provided with the grease chamber in the body, working connection, the choke door-plate that sets gradually before and after in solar term aperture of door and the solar term aperture of door, aditus laryngis and solar term door-plate, the grease chamber sucks fuel oil by the oil-feed device, the grease chamber communicates with working connection by oil duct, body internal resistance air door plate place is provided with the gas circuit that communicates with working connection, be provided with Venturi tube between the outlet of gas circuit and oil duct, be provided with oil duct III between working connection and the solar term aperture of door, the outlet of oil duct III is located between aditus laryngis and the solar term door-plate.
Further, oil duct comprises oil duct I and oil duct II, and oil duct I is connected with high-speed mixing controlled atmosphere joint screw, and oil duct II is connected with mixed on low speed controlled atmosphere joint screw, communicates by Venturi tube I and Venturi tube II respectively between the outlet of gas circuit and oil duct I and oil duct II.
Further, communicate by Venturi tube III between the outlet of oil duct I and the working connection.
Further, be provided with throttle lever in the working connection outlet of oil duct I and oil duct II is separated, be provided with groove in the throttle lever, groove is corresponding with working connection, rotates the aperture of throttle lever control working connection.
Further, the solar term door-plate is bolted to connection on solar term door-plate axle, and solar term door-plate axle drives throttle lever and rotates.
Further, the oil-feed device comprises in-line on the body and the diaphragm in the grease chamber, diaphragm one side communicates with the engine charge side, the diaphragm opposite side communicates with atmosphere, be fixedly connected with the oil-feed needle-valve on the diaphragm, the inherent in-line end of body is provided with corresponding pintle valve seat and needle valve spring, and the oil-feed needle-valve props up needle valve spring after passing pintle valve seat.
The utility model is owing to adopted technique scheme, the toxic emission of motor can be significantly less than the limit value requirement, the characteristic of binding engine and working principle, adopt the fuel-injected mode, with the needed fuel of motor, enter motor through the atomizing back direct injection motivation firing chamber of setting out, spray power resources, significantly reduced toxic emission in the firing pressure of motor.Be different from traditional Carburetor, this invention thoroughly changes from principle, fuel oil and AIR MIXTURES divide two passages to enter motor: one of them passage, and allow a spot of fuel oil and air mixture after the closure atomizing, to enter motor, be mainly used in the moving element of lubricating engine; And another passage, a large amount of fuel oils and air after the oil circuit mixing through indoor design, are directly injected in the engine cylinder-body, provide to satisfy fuel oil and air mixing ratio and the consumption that engine performance requires.This Carburetor reliable operation, flow are easy to control, and the toxic emission value of motor can be on the lower level.
Description of drawings
The utility model is described in further detail below in conjunction with accompanying drawing:
Fig. 1 is the structural representation of the utility model Carburetor.
Embodiment
As shown in Figure 1, be the utility model Carburetor, comprise Carburetor body 1, be provided with grease chamber 11 in the body 1, working connection 12, the choke door-plate 14 that sets gradually before and after in solar term aperture of door 13 and the solar term aperture of door 13, aditus laryngis 15 and solar term door-plate 16, grease chamber 11 sucks fuel oil by oil-feed device 2, oil-feed device 2 comprises the diaphragm 22 in in-line 21 on the body 1 and the grease chamber 11, diaphragm 22 1 sides communicate with the engine charge side, diaphragm 22 opposite sides communicate with atmosphere, be fixedly connected with oil-feed needle-valve 23 on the diaphragm 22, body 1 inherent in-line 21 ends are provided with corresponding pintle valve seat 24 and needle valve spring 25, and oil-feed needle-valve 23 props up needle valve spring 25 after passing pintle valve seat 24.Diaphragm 22 plays the effect of a measuring device, and it can correctly be each work cycle control oil inlet quantity of motor.When aspirating stroke, engine charge pressure ratio barometric pressure is little, so just forces diaphragm 22 towards low pressure one side shifting, promotes oil-feed needle-valve 23 simultaneously.When the power of pressure difference generation surpassed needle valve spring 25 thrusts, oil-feed needle-valve 23 breaks away from pintle valve seats 24 oil circuits to be opened, and fuel oil has just flow to grease chamber 11.When aspirating stroke finishes, the pressure of inlet end equals barometric pressure, under needle valve spring 25 restoring force effects, force oil-feed needle-valve 23 reset and and pintle valve seat 24 fit again, thereby oil circuit is closed, and work cycle of motor is needed like this can satisfy the fuel oil of engine performance requirement and ratio being transported in the grease chamber 11 by success of air mixing.
Grease chamber 11 communicates with working connection 12 by oil duct, body 1 internal resistance air door plate 14 places are provided with the gas circuit 17 that communicates with working connection 12, gas circuit 17 is provided with Venturi tube in the outlet port of oil duct, oil duct comprises oil duct I 31 and oil duct II 41, oil duct I 31 is connected with high-speed mixing controlled atmosphere joint screw 32, oil duct II 41 is connected with mixed on low speed controlled atmosphere joint screw 42, communicate by Venturi tube I 33 and Venturi tube II 43 respectively between the outlet of gas circuit 17 and oil duct I 31 and oil duct II 41, be provided with Venturi tube III34 between the outlet of oil duct I 31 and the working connection 12, make the further mixed aerosol of fuel oil and air, be provided with oil duct III44 between working connection 12 and the solar term aperture of door 13, the outlet of oil duct III44 is located between aditus laryngis 15 and the solar term door-plate 16.The air fuel ratio that satisfies engine performance is by high-speed mixing controlled atmosphere joint screw 32 and 42 controls of mixed on low speed controlled atmosphere joint screw, directly be transported to two passages after fuel oil attracted in the Carburetor: the sub-fraction fuel oil is by the oil duct III44 of aditus laryngis 15 back, be drawn onto in the solar term aperture of door 13 of Carburetor, because the Venturi tube effect of Carburetor aditus laryngis 15, produce low pressure and make fuel-oil atmozation, air can produce a pressure during by aditus laryngis 15 and fall, this pressure falls and fuel oil in the inspiration solar term aperture of door 13, successfully can be delivered to motor after the atomizing from oil duct III44; Most of in addition fuel oil is adjusted oil circuit by two mixed gas adjusting screw, is transported to working connection 12 then.
Working connection 12 communicates with main check valve 5, and main check valve 5 communicates with injection pipe 6, and injection pipe 6 one ends link to each other with the zone of high pressure of engine cylinder-body 7 one sides, and injection pipe 6 the other ends link to each other with the low voltage terminal of engine crankcase 8 one sides.When the pressure in the crankcase 8 during less than main check valve 5 internal pressures, because the effect of negative pressure, main check valve 5 is opened, and the fuel oil that is stored in the working connection 12 is inhaled in the injection pipe 6.After main check valve 5 was closed, jetburner communicated on the other end of injection pipe 6 and the cylinder body 7, and the Push And Release of this jetburner is to control by the motion of piston on the cylinder body 7.Regulate mixed on low speed controlled atmosphere joint screw 42, can be so that every motor obtains a correct fuel oil ratio when idling mode obtains; Regulate high-speed mixing controlled atmosphere joint screw 32, can make every motor when fast state, obtain required correct fuel oil ratio.
Behind choke door-plate 14, the air that enters Carburetor enters two passages: portion of air is through aditus laryngis 15, because Venturi tube effect sucks a small amount of fuel oil through oil duct III44 and enters 13 atomizings of solar term aperture of door, enters engine interior at last, lubricating movement part.Another part air flows to working connection 12 through gas circuit 17, this moment, air was divided into two parts again, a part flows to oil duct I 31 outlets, because Venturi tube I 33 diameters are littler than gas circuit 17, utilize Venturi effect, will be drawn onto in the working connection 12 by the fuel oil among the oil duct I 31 of high-speed mixing controlled atmosphere joint screw 32 controls, before entering working connection 12, need to produce Venturi effect equally, make fuel oil and air further mix, atomize through Venturi tube III34; Another part flows to oil duct II 41 outlets, because Venturi tube II 43 diameters are littler than gas circuit 17, utilizes Venturi effect, will be drawn onto in the working connection 12 by the fuel oil among the oil duct II 41 of mixed on low speed controlled atmosphere joint screw 42 controls.Being provided with throttle lever 18 in the working connection 12 separates the outlet of oil duct I 31 and oil duct II 41, be provided with groove in the throttle lever 18, groove is corresponding with working connection 12, rotate the aperture of throttle lever 18 control working connections 12, the control amount of fuel, solar term door-plate 16 is bolted to connection on solar term door-plate axle 19, and solar term door-plate axle 19 drives throttle lever 18 and rotates.
1, starting state
When engine start, motor needs the state of a mixed gas dense (fuel oil is more, little air) successfully to start, and this dense mixed gas can be realized by regulating choke door-plate 14.Choke door-plate 14 is installed in the solar term aperture of door 13, when choke door-plate 14 cuts out, most air is blocked in the outside, have only the sub-fraction air to enter, high-speed circuit and low speed oil circuit be fuel feeding in closure and working connection 12 simultaneously, required dense mixed gas when so just having formed engine start.Choke door-plate 14 can be controlled the air quantity that enters, and then adjusting enters the dense rare of engine mixed gas body.
2, idling mode
Compare with the state of running up with starting state, only need a spot of fuel oil during idling mode.So when the engine idle state, measure and transmit a spot of fuel oil, regulate mixed on low speed controlled atmosphere joint screw 42 and can make every motor when idling mode, obtain a correct fuel oil ratio by oil duct II 41.
3, middling speed state
Under the rotating speed higher, need more slightly fuel oil than idling.Motor needs more slightly fuel oil when idling accelerates to high speed, required fuel oil is sent in the working connection 12 during acceleration, and then enters injection pipe 6 by main check valve 5.
4, fast state
Solar term door-plate 16 and choke door-plate 14 are almost all opened under fast state, owing to almost there is not resistance, the speed that air-flow enters is very fast, the less Venturi tube of size can play the effect that increases airspeed and reduce stream pressure, regulate high-speed mixing controlled atmosphere joint screw 32 and can control fuel flow, make every motor obtain required correct fuel oil ratio at fast state.
When fast state, the fuel oil that is stored in working connection 12 on a small quantity enters in the solar term aperture of door 13.When aspirating stroke, this a part of fuel oil is sucked in the engine crankcase 8, and its main effect is cooling and lubricating bearings and crankshaft-link rod.For two stroke motor, lubricated mainly is to realize by the machine oil and the fuel oil of sneaking into.A large amount of fuel oils is admitted to working connection 12 places, same cause owing to pressure difference, and fuel oil is sucked into injection pipe 6, and the pressure of the injection pipe 6 of crankcase 8 ends of ining succession will hang down.In work cycle of motor, from upper dead center, crankshaft rotating 180 degree, crankcase 8 internal pressures increase, and can produce negative pressure in 180 motions of spending of remainder.When the low pressure recycle of motor was finished, this negative pressure (vacuum) was wanted hour than the power of main check valve 5 self, and main check valve 5 is closed.When piston ran to cylinder body 7 jetburners, injection pipe 6 and cylinder body 7 communicated, and this moment, cylinder body 7 inner high voltage gases can enter in the injection pipe 6, fuel oil is atomized close jetburner once more up to piston.In engine charge circuit process, when the big state of the pressure in the pressure ratio cylinder body 7 in the injection pipe 6, injection pipe 6 can be opened for the second time, and the fuel oil good atomizing is injected to cylinder body 7.
Claims (6)
1. Carburetor, comprise Carburetor body (1), it is characterized in that: be provided with grease chamber (11) in the described body (1), working connection (12), the choke door-plate (14) that sets gradually before and after in solar term aperture of door (13) and the described solar term aperture of door (13), aditus laryngis (15) and solar term door-plate (16), described grease chamber (11) sucks fuel oil through oil-feed device (2), described grease chamber (11) communicates with working connection (12) by oil duct, described body (1) internal resistance air door plate (14) locates to be provided with the gas circuit (17) that communicates with working connection (12), be provided with Venturi tube between the outlet of described gas circuit (17) and oil duct, be provided with oil duct III (44) between described working connection (12) and the solar term aperture of door (13), the outlet of described oil duct III (44) is located between aditus laryngis (15) and the solar term door-plate (16).
2. Carburetor according to claim 1, it is characterized in that: described oil duct comprises oil duct I (31) and oil duct II (41), described oil duct I (31) is connected with high-speed mixing controlled atmosphere joint screw (32), described oil duct II (41) is connected with mixed on low speed controlled atmosphere joint screw (42), communicates by Venturi tube I (33) and Venturi tube II (43) respectively between the outlet of described gas circuit (17) and oil duct I (31) and oil duct II (41).
3. Carburetor according to claim 2 is characterized in that: communicate by Venturi tube III (34) between the outlet of described oil duct I (31) and the working connection (12).
4. Carburetor according to claim 2, it is characterized in that: be provided with throttle lever (18) in the described working connection (12) outlet of oil duct I (31) and oil duct II (41) is separated, described throttle lever is provided with groove in (18), described groove is corresponding with working connection (12), rotates the aperture that throttle lever (18) is controlled described working connection (12).
5. Carburetor according to claim 4 is characterized in that: described solar term door-plate (16) is bolted to connection on solar term door-plate axle (19), and described solar term door-plate axle (19) drives throttle lever (18) and rotates.
6. Carburetor according to claim 1, it is characterized in that: described oil-feed device (2) comprises in-line (21) and described grease chamber (11) the interior diaphragm (22) on the body (1), described diaphragm (22) one sides communicate with the engine charge side, described diaphragm (22) opposite side communicates with atmosphere, be fixedly connected with oil-feed needle-valve (23) on the described diaphragm (22), the inherent in-line of described body (1) (21) end is provided with corresponding pintle valve seat (24) and needle valve spring (25), and described oil-feed needle-valve (23) props up needle valve spring (25) after passing pintle valve seat (24).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201897625U CN201474797U (en) | 2009-07-24 | 2009-07-24 | Carburetor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201897625U CN201474797U (en) | 2009-07-24 | 2009-07-24 | Carburetor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201474797U true CN201474797U (en) | 2010-05-19 |
Family
ID=42411043
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201897625U Expired - Lifetime CN201474797U (en) | 2009-07-24 | 2009-07-24 | Carburetor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201474797U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101644211B (en) * | 2009-07-24 | 2011-07-27 | 浙江亚特电器有限公司 | Carburetor |
-
2009
- 2009-07-24 CN CN2009201897625U patent/CN201474797U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101644211B (en) * | 2009-07-24 | 2011-07-27 | 浙江亚特电器有限公司 | Carburetor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20100519 Effective date of abandoning: 20090724 |