WO2017008212A1 - Carburateur muni d'un système de carburant de démarreur innovant - Google Patents

Carburateur muni d'un système de carburant de démarreur innovant Download PDF

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Publication number
WO2017008212A1
WO2017008212A1 PCT/CN2015/083810 CN2015083810W WO2017008212A1 WO 2017008212 A1 WO2017008212 A1 WO 2017008212A1 CN 2015083810 W CN2015083810 W CN 2015083810W WO 2017008212 A1 WO2017008212 A1 WO 2017008212A1
Authority
WO
WIPO (PCT)
Prior art keywords
oil
carburetor
chamber
starting
pump
Prior art date
Application number
PCT/CN2015/083810
Other languages
English (en)
Chinese (zh)
Inventor
陈献祥
Original Assignee
江门华联工业有限公司
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 江门华联工业有限公司 filed Critical 江门华联工业有限公司
Priority to CN201580019079.5A priority Critical patent/CN106460729B/zh
Priority to PCT/CN2015/083810 priority patent/WO2017008212A1/fr
Publication of WO2017008212A1 publication Critical patent/WO2017008212A1/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M1/00—Carburettors with means for facilitating engine's starting or its idling below operational temperatures
    • 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
    • F02M1/16—Other means for enriching fuel-air mixture during starting; Priming cups; using different fuels for starting and normal operation
    • 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
    • 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
    • F02M7/12—Other installations, with moving parts, for influencing fuel/air ratio, e.g. having valves

Definitions

  • the choke system closes the front end of the carburetor inlet through the door piece to concentrate the mixture, allowing the negative pressure to draw more fuel from the oil passage in the opening direction of the intake hole, but the disadvantage of the choke system is that the user must completely close the resistance.
  • the damper let the engine crankcase run until the user is aware that the starting method is wrong (the engine tries to start and run, but the mixture is too thick and does not work).
  • the choke valve is partially opened to allow the engine to start and run, and then the engine is operated in the half-open state of the choke valve until the full heat engine is opened, and then the choke valve is fully opened.
  • this operation is too complicated for users who are used to automatic operation today, often causing users to complain that the engine cannot be started, customer complaints, defective products are returned, and excessive warranty costs, but in fact the product quality is very good.
  • the oiler system needs to manually press the oil bubble, inject the fuel directly into the carburetor throat, and then enter the engine.
  • the disadvantage of the oiler system is that the simple oiler cannot judge whether the number of pulling the rope is too much or too little, and the fuel entering the engine is too much or too little, so the user can easily take too much oil (sinking the tank) or taking the oil. Too little, in both cases, it is impossible or difficult to start the engine again, causing user dissatisfaction and expensive warranty costs.
  • US Patent US5706774, US7185623 and US The 7913659 uses a fuel enrichment system, a system that concentrates fuel.
  • the fuel concentrating pump is a complete secondary fuel pump system that can pump fuel from the metering chamber through the oil inlet check valve into the secondary pump chamber, pushing the fuel out of the oil outlet hole and the check valve. , enter the carburetor throttle hole. While this system effectively overcomes the shortcomings of the above-described choke system and oiler system, the complexity of the system greatly increases the cost of the carburetor.
  • the present invention discloses a carburetor with a novel starting oil system, including an oiler oil bubble, a pump cover, a pump diaphragm, and a chemical oil.
  • the carburetor body is provided with a pump surface, a metering chamber surface, a throttle end surface, a choke end surface, an oil inlet connection surface, and a high and low speed nail surface, the oil filling
  • the oil bulb, the pump cover and the pump membrane are sequentially fixed by bolts on the pump surface of the carburetor body, and the carburetor body is provided with a mixing chamber, and the mixing chamber is provided with a communication metering surface, a throttle opening end and three openings of the choke end surface, the starting shaft and the throttle shaft are disposed obliquely in the carburetor body through the mixing chamber, and the two ends respectively extend into the oil connection surface and the high and low speed nail surface
  • the metering chamber cover is fixed to the measuring chamber surface of the carburetor body by bolts.
  • the pump surface of the carburetor body is provided with a main pump oil chamber, a starting fuel chamber, a check valve, a check valve hole, a first oil passage, and a third start pulse passage
  • the main A first start pulse channel is disposed in the pump oil chamber
  • the start fuel chamber is provided with a second oil passage
  • the second oil passage is in communication with the first oil passage
  • the check valve is disposed in the check valve hole.
  • the throttle end face of the carburetor body is provided with a main pulse passage, and the main pulse passage is in communication with the main pump oil chamber.
  • the choke valve end surface of the carburetor body is provided with a second start pulse channel, and the second start pulse channel is simultaneously connected with the first start pulse channel and the third start pulse channel.
  • the top of the pump cover is provided with a one-way valve
  • the bottom portion is provided with a start pulse chamber and a fourth start pulse channel
  • the fourth start pulse channel is connected with the start pulse chamber
  • the start pulse chamber is Start the fuel chamber to match.
  • the pump diaphragm is provided with a fifth start pulse channel, and the fifth start pulse channel is connected to the fourth start pulse channel and the third start pulse channel.
  • the carburetor body is provided with a high-speed screw and an idle speed screw
  • the measuring chamber cavity is provided with a high-speed oil passage and an idle oil passage
  • the high-speed screw has a high-low speed nail surface from the carburetor body at one end. The other end extends into the metering chamber and communicates with the high-speed oil passage.
  • One end of the idle screw protrudes from the high and low speed nail surface of the carburetor body, and the other end extends into the metering chamber to communicate with the idle oil passage.
  • FIG. 3 is an exploded view of a second structure of an embodiment of the present invention.
  • FIG. 4 is a top plan view of a carburetor body according to an embodiment of the present invention.
  • Figure 6 is a cross-sectional view taken along line C-C of Figure 4.
  • Figure 8 is a cross-sectional view taken along line B-B of Figure 7.
  • a carburetor having a novel starting oil system includes an oiler oil bubble 20, a pump cover 30, a pump diaphragm 40, a carburetor body 10, a starting shaft 50, and a throttle shaft. 60 and metering chamber cover 70.
  • the carburetor body 10 is provided with a pump surface 101, a metering chamber surface 102, a throttle end surface 103, a choke end surface 104, an oil inlet connection surface 105, and a high and low speed nail surface 106, an oil injector oil bubble 20, a pump cover 30 and a pump membrane.
  • the sheet 40 is sequentially fixed to the pump face 101 of the carburetor body 10 by bolts.
  • the carburetor body 10 is provided with a mixing chamber 107.
  • the mixing chamber 107 is provided with three openings connecting the metering chamber surface 102, the throttle end surface 103 and the choke end surface 104, wherein the throttle port 122 is disposed at the throttle end surface 103.
  • the starter shaft 50 and the throttle shaft 60 are disposed obliquely disposed in the carburetor body 10 through the mixing chamber 107, and the two ends respectively extend into the oil connection surface 105 and the high and low speed nail surface 106, and the metering chamber cover 70 is fixed by bolts.
  • the metering chamber surface 102 of the carburetor body 10 is disposed.
  • the choke valve end face 104 of the carburetor body 10 is provided with a second start pulse channel 115, and the second start pulse channel 115 is simultaneously connected with the third start pulse channel 111 and the first start pulse channel 112.
  • the end of the second start pulse channel 115 is in communication with the first start pulse channel 112, and the first start pulse channel 112 is obliquely disposed within the carburetor body 10.
  • a fourth oil passage 127 is disposed in the carburetor body 10, and the fourth oil passage 127 is in communication with the check valve hole 126.
  • the carburetor body 10 is further provided with a third passage 125, and the third passage 125 communicates with the second oil passage 113 and the main nozzle 117.
  • the metering chamber 116 is provided with an idle oil passage 120 and a high speed oil passage 121.
  • One end of the idle screw 118 extends from the high and low speed nail surface 106 of the carburetor body 10, and the other end projects into the metering chamber.
  • 116 is in communication with the high speed oil passage 120.
  • One end of the high speed screw 119 extends from the high and low speed nail surface 106 of the carburetor body 10, and the other end extends into the metering chamber cavity 116 to communicate with the high speed oil passage 121.
  • the fuel is withdrawn from the metering chamber cavity 116, flows from the high speed oil passage 121 through the tip of the high speed screw 119, and sequentially passes through the main nozzle 117, the third oil passage 125, the second oil passage 113, the starting fuel chamber 109, and the first
  • the oil passage 110 and the check valve 301 deliver fuel to the oil sump 20, when the fuel chamber 109 is filled with oil, and the check valve 301 can directly and directly prevent the oil sump 20 from being pressurized.
  • the oiler bubble 20 is squeezed into the mixing chamber 107 through the main nozzle 117.
  • the engine piston When the engine crankcase is running to start the engine, the engine piston generates alternating pulses of positive pressure and negative pressure in the crankcase, and the pulse enters the main pump oil chamber 108 through the main pulse passage 114, and the start shaft 50 rotates to make the sixth start pulse passage.
  • the 501 is aligned with the third start pulse channel 111 of the carburetor body 10, and the pulse is sequentially passed from the main pump oil chamber 108 through the first start pulse channel 112, the second start pulse channel 115, the sixth start pulse channel 501, and the third start pulse.
  • the channel 111, the fifth start pulse channel 401 of the pump diaphragm 40, and the fourth start pulse channel 303 of the pump cover 30 enter the start pulse chamber 302, and the start pulse chamber 302 matches the start fuel chamber 109.
  • the driving pump diaphragm 40 Under the action of the positive pulse pressure, the driving pump diaphragm 40 is lowered into the starting fuel chamber 109, and the fuel chamber 109 is activated to apply a positive pressure to the fuel.
  • the essentially incompressible fuel will be applied through the second oil passage 113 and the third oil passage 125.
  • the pressure is supplied to the main nozzle 117, and the fuel is forced to flow out from the main nozzle 117.
  • crankcase pulse Since the crankcase pulse has periodicity, when the engine piston moves upward in the crankcase, the positive pressure becomes a negative pressure, and the negative pressure pulse suction pump diaphragm 40 rises to the start pulse chamber 302 of the pump cover 30 and is applied again.
  • the fuel is withdrawn from the metering chamber cavity 116 through the high speed oil passage 121, flows through the tip of the high speed screw 119, and sequentially passes through the main nozzle 117, the third oil passage 125, the second oil passage 113, and the filling start fuel. Cavity 109.
  • the metering chamber 116 acts as a fuel quantity adjustment, allowing additional fuel to fill the metering chamber cavity 116 to ensure that there is sufficient fuel to replace the fuel used in the engine and drawn into the fuel chamber 109.
  • This pump oil cycle continues as the engine crankcase runs until the engine is started, the heat engine, and then the operator adjusts the throttle shaft 60 to the throttle, the start shaft 50 rotates, and the sixth start pulse passage 501 is no longer aligned with the third start pulse.
  • the throttle shaft 60 may be partially opened or fully opened.
  • the throttle shaft 60 is partially opened to make the mixture denser and improve the acceleration effect; once the engine In the heat engine, the throttle shaft 60 will be in the fully open state, the throttle shaft rocker arm 601 is separated from the lock rocker arm 502, and the engine is returned to the idle running state.
  • the technical solution of the present invention has many advantages over the prior art, and the present invention does not require a secondary oil pump, an oil inlet and an oil return check valve system, a fuel control orifice, a pulse control orifice, and the like, and does not require an air passage to prevent The fuel is withdrawn due to the negative pressure of the crankshaft, and the present invention has lower cost, less machining and tool changeover operations, fewer assembly processes, and a more compact overall structure without adding additional components.
  • the present embodiment only discloses the technical solution that the oiler oil bubble 20 is integrally mounted on the pump cover 30. Obviously, it can also be realized by means of an external carburetor oil bubble connected by a hose, or applied to Other systems, such as mechanical pumps, peristaltic pumps, or electromechanical pump injectors, can fill fuel into the starting fuel chamber 109 before the engine crankcase is running, or while the engine crankcase is running.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Means For Warming Up And Starting Carburetors (AREA)
  • Lubrication Of Internal Combustion Engines (AREA)

Abstract

L'invention concerne un carburateur muni d'un système de carburant de démarreur qui comprend une cavité de carburant d'un injecteur de carburant, un couvercle de pompe, un diaphragme de pompe, un corps de carburateur (10), un arbre de démarrage, un arbre de papillon (60) et un couvercle de chambre de dosage, le corps de carburateur étant pourvu d'une face de pompe (101), d'une face de chambre de dosage (102), d'une face d'extrémité de papillon (103), d'une face d'extrémité de soupape d'étranglement (104), d'une face de connexion d'entrée de carburant (105) et d'une face de clouage à haute et à basse vitesse (106); la cavité de carburant de l'injecteur de carburant, le couvercle de pompe et le diaphragme de pompe sont disposés fixement sur la face de pompe du corps de carburateur (10) de manière successive par l'intermédiaire d'un boulon; une chambre de mélange (107) est prévue dans le corps de carburateur (10); l'arbre de démarrage et l'arbre de papillon (60) pénètrent à travers la chambre de mélange et sont disposés obliquement dans le corps de carburateur (10) avec deux extrémités s'étendant respectivement hors de la face de connexion d'entrée de carburant (105) et de la face de clouage à haute et à basse vitesse (106); et le couvercle de chambre de dosage est disposé fixement sur la face de chambre de dosage (102) du corps de carburateur (10) par l'intermédiaire d'un boulon. Le carburateur ne nécessite pas de pompe à carburant secondaire, de système de clapet antiretour d'entrée et de sortie de carburant, d'orifice de régulation de carburant et d'orifice de régulation d'impulsion et similaires, et ne nécessite pas non plus de conduit d'air pour empêcher que du carburant ne soit pompé vers l'extérieur sous l'effet d'une pression négative du vilebrequin; la présente invention est en outre économique et présente une structure simple.
PCT/CN2015/083810 2015-07-10 2015-07-10 Carburateur muni d'un système de carburant de démarreur innovant WO2017008212A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201580019079.5A CN106460729B (zh) 2015-07-10 2015-07-10 一种具有启动油系的化油器
PCT/CN2015/083810 WO2017008212A1 (fr) 2015-07-10 2015-07-10 Carburateur muni d'un système de carburant de démarreur innovant

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2015/083810 WO2017008212A1 (fr) 2015-07-10 2015-07-10 Carburateur muni d'un système de carburant de démarreur innovant

Publications (1)

Publication Number Publication Date
WO2017008212A1 true WO2017008212A1 (fr) 2017-01-19

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Application Number Title Priority Date Filing Date
PCT/CN2015/083810 WO2017008212A1 (fr) 2015-07-10 2015-07-10 Carburateur muni d'un système de carburant de démarreur innovant

Country Status (2)

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CN (1) CN106460729B (fr)
WO (1) WO2017008212A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107013371A (zh) * 2017-05-23 2017-08-04 福建华龙化油器有限公司 电动车增程动力改良型膜片式化油器
CN110360025A (zh) * 2019-05-23 2019-10-22 上海格林罗格精密机械技术有限公司 打草机化油器泵盖
CN110145413B (zh) * 2019-06-19 2024-02-13 福建省大立通用机电制造有限公司 一种给油***
CN113464315A (zh) * 2021-08-06 2021-10-01 福建省福鼎市金星通用机化油器有限公司 二冲程蝶阀式燃油全自动混合真空膜片化油器组件
CN114799872B (zh) * 2022-05-26 2023-03-24 福鼎睿达自动化设备有限公司 全自动化式化油器总成组装***

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3118009A (en) * 1960-05-02 1964-01-14 Tillotson Mfg Co Charge forming and fuel feeding apparatus for internal combustion engines
CN1484733A (zh) * 2000-10-20 2004-03-24 �ٹ��� 发动机化油器的起动注油***
CN101881239A (zh) * 2010-06-23 2010-11-10 陈其安 简易启动膜片式化油器
CN102828852A (zh) * 2012-08-21 2012-12-19 浙江瑞星化油器制造有限公司 棘轮式简易起动化油器

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10233282B4 (de) * 2002-07-23 2012-11-15 Andreas Stihl Ag & Co. Vergaseranordnung
CN201428525Y (zh) * 2009-06-03 2010-03-24 陈其安 具有起动装置的化油器
CN201635868U (zh) * 2010-04-27 2010-11-17 陈其安 简易启动膜片式化油器
CN202545057U (zh) * 2012-05-17 2012-11-21 浙江瑞星化油器制造有限公司 带有辅助油路的简易启动膜片式化油器

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3118009A (en) * 1960-05-02 1964-01-14 Tillotson Mfg Co Charge forming and fuel feeding apparatus for internal combustion engines
CN1484733A (zh) * 2000-10-20 2004-03-24 �ٹ��� 发动机化油器的起动注油***
CN101881239A (zh) * 2010-06-23 2010-11-10 陈其安 简易启动膜片式化油器
CN102828852A (zh) * 2012-08-21 2012-12-19 浙江瑞星化油器制造有限公司 棘轮式简易起动化油器

Also Published As

Publication number Publication date
CN106460729A (zh) 2017-02-22
CN106460729B (zh) 2019-03-15

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