CN101644211B - Carburetor - Google Patents
Carburetor Download PDFInfo
- Publication number
- CN101644211B CN101644211B CN2009101011695A CN200910101169A CN101644211B CN 101644211 B CN101644211 B CN 101644211B CN 2009101011695 A CN2009101011695 A CN 2009101011695A CN 200910101169 A CN200910101169 A CN 200910101169A CN 101644211 B CN101644211 B CN 101644211B
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- oil duct
- oil
- door
- working connection
- solar term
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Abstract
The invention discloses a carburetor which comprises a carburetor body that is internally provided with an oil chamber, a main oil way, a throttle valve hole as well as a choke valve plate, a throat hole and a throttle valve plate that are sequentially arranged inside the throttle valve hole from front to back; wherein the oil chamber can absorb fuel oil through an oil inlet device and is communicated with the main oil way by an oil duct, the choke valve plate inside the body is provided with a gas channel communicated with the main oil way, a venturi tube is arranged between an outlet of theoil duct and the gas channel, an oil duct III is positioned between the main oil way and the throttle valve hole, an outlet of the oil duct III is arranged between the throat hole and a throttle valve plate, the oil duct comprises an oil duct I and an oil duct II, wherein the oil duct I is connected with a high speed mixed gas adjusting screw, the oil duct II is connected with a low speed mixed gas adjusting screw, and the gas channel is respectively communicated with the outlets of the oil duct I and the oil duct II by a venturi tube I and a venturi tube II. The carburetor is reliable in work, has easy control of flow rate, and ensures the exhaust emission value of an engine to be at a lower level.
Description
Technical field
The present invention 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.
Summary of the invention
The object of the present invention is to provide Carburetor, 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 present invention 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 present invention 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 invention will be further described below in conjunction with accompanying drawing:
Fig. 1 is the structural representation of Carburetor of the present invention.
Embodiment
As shown in Figure 1, be Carburetor of the present invention, 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.
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 (5)
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), 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).
2. Carburetor according to claim 1 is characterized in that: communicate by Venturi tube III (34) between the outlet of described oil duct I (31) and the working connection (12).
3. Carburetor according to claim 1, 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).
4. Carburetor according to claim 3 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.
5. 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 |
---|---|---|---|
CN2009101011695A CN101644211B (en) | 2009-07-24 | 2009-07-24 | Carburetor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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CN2009101011695A CN101644211B (en) | 2009-07-24 | 2009-07-24 | Carburetor |
Publications (2)
Publication Number | Publication Date |
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CN101644211A CN101644211A (en) | 2010-02-10 |
CN101644211B true CN101644211B (en) | 2011-07-27 |
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Application Number | Title | Priority Date | Filing Date |
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CN2009101011695A Expired - Fee Related CN101644211B (en) | 2009-07-24 | 2009-07-24 | Carburetor |
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Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
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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 |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3931797A (en) * | 1973-12-29 | 1976-01-13 | Toyota Jidosha Kogyo Kabushiki Kaisha | Automobile engine carburetors |
US4249503A (en) * | 1978-09-07 | 1981-02-10 | Honda Giken Kogyo Kabushiki Kaisha | Exhaust gas recirculation for engine |
CN1031408A (en) * | 1987-08-17 | 1989-03-01 | 纪培新 | Carburetor throttle and chock plate linkage |
CN1128840A (en) * | 1995-12-28 | 1996-08-14 | 杨笑风 | Diaphragm type jet carburettor |
CN2364225Y (en) * | 1999-04-28 | 2000-02-16 | 高毅 | Fuel-saving carburettor for motorcycle |
CN201474797U (en) * | 2009-07-24 | 2010-05-19 | 浙江亚特电器有限公司 | Carburetor |
-
2009
- 2009-07-24 CN CN2009101011695A patent/CN101644211B/en not_active Expired - Fee Related
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3931797A (en) * | 1973-12-29 | 1976-01-13 | Toyota Jidosha Kogyo Kabushiki Kaisha | Automobile engine carburetors |
US4249503A (en) * | 1978-09-07 | 1981-02-10 | Honda Giken Kogyo Kabushiki Kaisha | Exhaust gas recirculation for engine |
CN1031408A (en) * | 1987-08-17 | 1989-03-01 | 纪培新 | Carburetor throttle and chock plate linkage |
CN1128840A (en) * | 1995-12-28 | 1996-08-14 | 杨笑风 | Diaphragm type jet carburettor |
CN2364225Y (en) * | 1999-04-28 | 2000-02-16 | 高毅 | Fuel-saving carburettor for motorcycle |
CN201474797U (en) * | 2009-07-24 | 2010-05-19 | 浙江亚特电器有限公司 | Carburetor |
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CN101644211A (en) | 2010-02-10 |
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