WO2012009944A1 - Carburateur et mécanisme de commande d'étrangleur associé - Google Patents

Carburateur et mécanisme de commande d'étrangleur associé Download PDF

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Publication number
WO2012009944A1
WO2012009944A1 PCT/CN2011/000011 CN2011000011W WO2012009944A1 WO 2012009944 A1 WO2012009944 A1 WO 2012009944A1 CN 2011000011 W CN2011000011 W CN 2011000011W WO 2012009944 A1 WO2012009944 A1 WO 2012009944A1
Authority
WO
WIPO (PCT)
Prior art keywords
choke
rocker arm
plane
control mechanism
carburetor
Prior art date
Application number
PCT/CN2011/000011
Other languages
English (en)
Chinese (zh)
Inventor
陈俭敏
徐小平
徐炎
Original Assignee
Chen Jianmin
Xu Xiaoping
Xu Yan
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 Chen Jianmin, Xu Xiaoping, Xu Yan filed Critical Chen Jianmin
Publication of WO2012009944A1 publication Critical patent/WO2012009944A1/fr

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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
    • F02M1/08—Carburettors with means for facilitating engine's starting or its idling below operational temperatures the means to facilitate starting or idling becoming operative or inoperative automatically
    • F02M1/10—Carburettors with means for facilitating engine's starting or its idling below operational temperatures the means to facilitate starting or idling becoming operative or inoperative automatically dependent on engine temperature, e.g. having thermostat

Definitions

  • the invention relates to a carburetor for an engine, in particular to a carburetor and a fully automatic choke thereof.
  • Fig. 1 is a schematic view showing the structure of a carburetor and a choke valve of the prior art. As shown in the figure, a conventional carburetor is shown.
  • the choke valve 100 When the engine is started, the choke valve 100 is fully closed, and needs to be manually rotated after starting.
  • the shift fork 200 drives the choke shaft 300 to rotate and open the choke valve 100.
  • the choke valve 100 When the engine is stopped, the next time the cold machine is started, the choke valve 100 needs to be manually closed, and then turned on after being turned on.
  • the technical problem to be solved by the present invention is to provide a carburetor and a choke valve which are simple in structure, safe and convenient to use, and whose choke can realize automatic control.
  • the present invention provides a choke control mechanism disposed on a carburetor of an engine, wherein the choke control mechanism includes a choke rocker arm, a sliding link, a return spring, and is used for control a metal temperature control device for the position of the choke arm, the sliding link connecting the throttle arm of the carburetor and the choke shaft of the carburetor, the return spring being disposed at the resistor a damper shaft is coupled to the carburetor body of the carburetor, the choke rocker arm is rotatably coupled to the choke shaft, and the choke rocker arm is provided with a member for driving the choke shaft to rotate a rocker working surface, the metal temperature control device is coupled to the choke rocker arm, and the metal temperature control device is disposed at the engine On the heating parts.
  • the choke control mechanism includes a choke rocker arm, a sliding link, a return spring, and is used for control a metal temperature control device for the position of the choke arm, the sliding link connecting the throttle arm of the carburetor and the choke shaft of
  • the metal temperature control device comprises a bimetal thermostat and a thermostat connecting rod, one end of the thermostat connecting rod is connected with the bimetal thermostat,
  • the choke rocker arm is rotatably coupled to the other end of the thermostat link.
  • the choke rocker arm includes a first plane, a second plane, and a third plane that are sequentially connected, and the first plane is provided with a first for connecting with the choke shaft a connecting hole, the third plane is provided with a second connecting hole for connecting with the thermostat link, and the second plane is the rocker working surface.
  • the above-mentioned choke control mechanism wherein the first plane is disposed in parallel with the third plane, and the second plane is disposed perpendicular to the first plane and the second plane, the first plane and the A first transitional arc surface is disposed between the second planes, and a second transition arc surface is disposed between the second plane and the third plane.
  • the above-mentioned choke control mechanism further includes a bushing for defining a choke rocker arm and a returning torsion spring, the bushing is sleeved on the choke shaft, the returning torsion spring and the choke valve
  • the rocker arm is sleeved on the sleeve, and the choke rocker arm is located above the return torsion spring.
  • the sliding link includes a first end, a second end, and a sliding slot
  • the first end is provided with a sliding connecting hole for connecting with the throttle rocker arm
  • the sliding The groove is disposed along a length direction of the sliding link, and the sliding groove is adjacent to the second end.
  • the sliding link is a linear structure, an arc structure or a bent structure.
  • the rocker arm connecting member includes a connecting rod connecting portion, a rocker arm connecting portion, and a connection a connecting surface of the connecting rod connecting portion and the rocker connecting portion, the connecting rod connecting portion is provided with a connecting groove adapted to the thermostat connecting rod, and the rocking arm connecting portion is provided with the The connecting hole of the thermostat connecting rod.
  • the present invention also provides a carburetor including a carburetor body and a throttle valve mounted on the carburetor body, a throttle rocker arm connected to the throttle valve, a choke valve, a choke shaft connected to the choke valve, and a choke control mechanism, wherein the choke control mechanism is the choke control mechanism described above.
  • FIG. 1 is a schematic view showing the structure of a carburetor and a choke valve of the prior art
  • FIG. 2A is a schematic perspective view showing a carburetor and a choke control mechanism thereof according to the present invention
  • FIG. 2B is a schematic perspective view of the other direction of FIG. 2A;
  • 3A is a schematic view showing a throttle state of the carburetor of the present invention when the engine is cold;
  • 3B is a schematic view showing the state of the choke valve of the carburetor of the present invention when the engine is cold;
  • Figure 3C is a plan view of Figure 3B
  • 4A is a schematic view showing the state of the choke valve of the carburetor of the present invention when the cold machine is started;
  • Figure 4B is a plan view of Figure 4A;
  • Figure 5A is a plan view of the carburetor of the present invention in an idling condition
  • Figure 5B is a plan view of the carburetor of the present invention in a fully open position
  • FIG. 6A is a schematic view showing the connection between the choke arm and the metal temperature control device according to an embodiment of the present invention
  • FIG. 6B is a schematic view showing the working principle of the metal temperature control device when the engine is cold
  • 6C is a schematic view showing the working principle of the metal temperature control device when the engine is hot;
  • 7A is a schematic view showing the assembly relationship between the choke arm and the choke shaft of the present invention.
  • Figure 7B is a plan view of Figure 7A
  • FIG. 8A is a schematic structural view of a sliding link according to an embodiment of the present invention.
  • FIG. 8B is a schematic structural view of a sliding link according to another embodiment of the present invention.
  • 8C is a schematic structural view of a sliding link according to still another embodiment of the present invention.
  • FIG. 9 is a schematic structural view of a choke rocker arm according to an embodiment of the present invention.
  • FIG. 10 is a schematic structural view of a returning torsion spring according to an embodiment of the present invention.
  • FIG. 11 is a schematic structural view of a rocker connector according to an embodiment of the present invention.
  • FIG. 1 is a schematic view of the prior art carburetor and its choke structure
  • Fig. 2A is a schematic view of the present invention
  • FIG. 2B is a schematic perspective view showing the three-dimensional structure of the carburetor and its choke control mechanism.
  • the carburetor of the present invention includes a carburetor body 1 and a throttle valve 2 mounted on the carburetor body 1, a throttle rocker arm 3 connected to the throttle valve 2, a choke valve 4, and the The choke shaft 5 and the choke control mechanism 6 connected to the choke valve 4 are all mature prior art, and will not be described herein. Only the choke control mechanism 6 will be described in detail below.
  • the choke control mechanism 6 of the present invention is disposed on the carburetor of the engine 7, and the choke control mechanism 6 includes a choke rocker arm 61, a sliding link 62, a return torsion spring 64, and a metal temperature control device 65 for controlling the position of the choke rocker arm 61, the metal temperature control device 65 is connected to the choke rocker arm 61, and the metal temperature control device 65 is disposed on the heat generating component of the engine 7. .
  • the heat generating component of the engine according to the present invention refers to a place where the temperature of the engine changes with the engine heat engine.
  • the metal temperature control device 65 is preferably disposed on the muffler or the cylinder of the engine 7.
  • the metal temperature control device 65 in this embodiment is preferably a bimetal temperature controller 651 and a thermostat link 652.
  • the control of the damper rocker arm 61 can realize the automatic control of the choke valve 4, which is not limited thereto.
  • the sliding link 62 is connected to the throttle rocker arm 3 of the carburetor and the choke shaft 5 of the carburetor, and the return torsion spring 64 is disposed on the choke shaft 5 and
  • the body 1 of the carburetor is connected, and the choke arm 61 is rotatably connected to the choke shaft 5, and the choke arm 61 is provided with a rocker working surface for pushing the choke shaft 5 to rotate.
  • One end of the thermostat link 652 and the bimetal thermostat Connected to 651, the choke rocker arm 61 is rotatably coupled to the other end of the thermostat link 652, and the bimetal thermostat 651 is disposed on the engine.
  • FIG. 3A is a schematic diagram of a throttle state of the carburetor in an engine cold state according to the present invention.
  • 3B is a schematic view showing the state of the choke valve of the carburetor of the present invention when the engine is cold
  • FIG. 3C is a plan view of FIG. 3B.
  • the choke valve 4 When cold start, the choke valve 4 is half open to avoid the choke valve 4 opening too early or too late to cause flameout; c. After the heat engine, the choke valve 4 is fully open, and the throttle valve 2 can be turned to any working condition;
  • Figure 4A is a schematic view showing the state of the choke valve of the carburetor of the present invention when the cold machine is started
  • Figure 4B is a plan view of Figure 4A.
  • the throttle 2 is rotated to the no-load position, and the choke 4 is driven to rotate to the half-open position by the sliding link 62. This will not cause the engine to stall if the bellows 4 is opened too early or too late at startup, or the mixture is too late to open the choke 4, causing the mixture to become too thick and polluting the environment, thus having good starting performance and environmental protection requirements.
  • FIG. 5A is a plan view of the carburetor in the idling condition position of the present invention
  • FIG. 5B is a position of the carburetor in the fully open working position of the present invention. Top view.
  • the heat engine starts: When the engine is stopped in the heat engine, the throttle valve 2 will return to the initial full open position, and the choke valve 4 is in the fully open position due to the action of the bimetal thermostat 651, and the start is started again.
  • the machine just meets the requirement that the heat engine start the choke 4 fully open.
  • the throttle 2 After the engine is stopped, the throttle 2 will automatically return to the initial fully open position. As the engine temperature drops, the bimetal of the bimetal thermostat 651 will slowly return to the original state and the bending and swirling motion will occur. The thermostat link 652 drives the choke rocker arm 61 to rotate in the opposite direction and slowly returns. Cold machine location. At the same time, as the working face of the choke rocker arm 61 is disengaged from the choke shaft side 51, the choke valve 4 returns to the fully closed position of the cold state under the action of the return torsion spring 64. During this process, the sliding link 62 will slide with it, but the throttle 3 will not be controlled.
  • FIG. 6A is a schematic diagram showing the connection between the choke arm and the metal temperature control device according to an embodiment of the present invention
  • FIG. 6B is a schematic diagram of the working principle of the metal temperature control device when the engine is cold
  • FIG. 6C is Schematic diagram of the working principle of the metal temperature control device when the engine is hot.
  • 6B and 6C show the two extreme positions of the choke control mechanism 6 of the present invention, respectively.
  • the bimetal thermostat 651 of the present invention on the muffler or cylinder of the engine 7 of the engine is rotatably coupled to the choke rocker arm 61 via the thermostat link 652.
  • the shape of the thermostat link 652 can be designed according to different engine and carburetor configurations, and there is no limitation thereto.
  • 6A and 6B show the state of the cold machine.
  • the bimetal thermostat 651 When the temperature rises, the bimetal thermostat 651 will bend and rotate, thereby pulling the thermostat link 652 and driving the choke rocker 61 connected thereto. Rotating, reaching the position shown in Fig. 6C; when the temperature is lowered, the bimetal thermostat 651 will reversely rotate, causing the thermostat link 652 and the choke rocker arm 61 to return to the cold position shown in Fig. 6B.
  • Figure 7A is a schematic view showing the assembly relationship between the choke arm and the choke shaft of the present invention
  • Figure 7B is a plan view of Figure 7A.
  • the choke control mechanism 6 further includes a sleeve 68 for defining the choke rocker arm 61 and the return torsion spring 64, the bushing 68 is sleeved on the choke shaft 5, the return torsion spring 64 and the
  • the choke rocker arm 61 is sleeved on the sleeve 68, and the choke rocker arm 61 is located above the return torsion spring 64.
  • FIG. 8A is a schematic structural view of a sliding link according to an embodiment of the present invention
  • FIG. 8B is a schematic structural view of a sliding link according to another embodiment of the present invention
  • FIG. 8C is a sliding connection according to still another embodiment of the present invention.
  • the sliding link 62 includes a first end 621, a second end 622, and a sliding slot 624.
  • the first end 621 is provided with a sliding connecting hole 623 for connecting with the throttle rocker arm 3.
  • the sliding slot 624 The sliding groove 624 is disposed along the longitudinal direction of the sliding link 62, and the sliding groove 624 is adjacent to the second end 621.
  • the shape of the sliding link 62 is not particularly limited as long as the linkage function of the throttle valve 2 and the choke valve 4 can be realized.
  • the sliding link 62 can be a linear connecting rod, that is, the sliding joint
  • the rod 62 is an axisymmetric structure, and the axis of symmetry of the sliding link 62 is a straight line (as shown in FIG. 8C);
  • the sliding link 62 may be an arc structure (as shown in FIG. 8A) or a bent structure (as shown in FIG. 8B).
  • FIG. 9 is a schematic structural view of a choke rocker arm according to an embodiment of the present invention.
  • the choke rocker arm 61 includes a first plane 611, a second plane 612 and a third plane 613 which are sequentially connected, and the first plane 611 is provided with a first connecting hole 614 for connecting with the choke shaft 5
  • the third plane 613 is provided with a second connecting hole 615 for connecting with the thermostat link 652, and the second plane 612 is the rocker working surface.
  • the first plane 611 is disposed in parallel with the third plane 613
  • the second plane 612 is disposed perpendicular to the first plane 611 and the second plane 612
  • the first plane 611 A first transition arc surface 616 is disposed between the second plane 612 and a second transition arc surface 617 between the second plane 612 and the third plane 613.
  • FIG. 10 is a schematic diagram of a returning twist structure according to an embodiment of the present invention.
  • the return torsion spring 64 includes a spring body 641 and a first end 642 for connection to the choke shaft, i.e., a second end 643 for connection to the carburetor body 1.
  • the torsion force of the return torsion spring 64 should meet the set requirement, that is, the torsion force can push the choke shaft 5 to rotate under the driving of the choke rocker arm 61 by the thermostat link 652, and can also be rotated at the end of the driving force. A smooth reset of the choke shaft 5 is achieved.
  • FIG 11 is a schematic view showing the structure of a rocker connector according to an embodiment of the present invention.
  • the thermostat link 652 and the choke rocker arm 61 are connected by a rocker arm connecting member 67.
  • the rocker arm connecting member 67 includes a connecting rod connecting portion 671, a rocker connecting portion 672, and a connecting body a connecting portion 673 of the lever connecting portion 671 and the rocker connecting portion 672, the connecting rod connecting portion 671 is provided with a connecting groove 674 adapted to the thermostat link 652, and the rocker connecting portion 672 is disposed There is a connection hole 675 that is adapted to the thermostat link 652.
  • the axis of the connecting groove 674 is perpendicular to the axis of the connecting hole 675.
  • the invention realizes the automatic control of the choke by means of the mechanical structure, adds a sliding link between the throttle valve and the choke valve, adds a return torsion spring and a choke rocker arm at the choke valve, and adds a metal temperature control on the engine.
  • the device realizes the automatic switch of the choke, which fully meets the needs of the engine work, and has the advantages of convenient use, simple structure, stability and reliability.
  • the invention adds a sliding link between the throttle valve and the choke valve, and adds a return torsion spring at the choke valve And the rocker arm, in addition to the engine to add a metal temperature control device, together to achieve the automatic switch of the choke, fully meet the needs of the engine work, and meet environmental requirements.
  • the invention has the advantages of convenient use, simple structure, stability and reliability, and is more environmentally friendly than the conventional carburetor.
  • the invention avoids the conventional carburetor after the engine is started, because the user opens the choke valve too late and the mixture is too rich. It produces thick smoke and pollutes the environment, and has high practical economic value.

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  • 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)

Abstract

La présente invention concerne un carburateur et un mécanisme de commande d'étrangleur associé. Le carburateur comprend un corps principal (1) de carburateur et un papillon des gaz (2) monté sur celui-ci, un culbuteur (3) de papillon des gaz relié au papillon des gaz (2), un étrangleur (4), un arbre (5) d'étrangleur et un mécanisme de commande (6) d'étrangleur reliés tous deux à l'étrangleur (4). Le mécanisme de commande (6) d'étrangleur comprend un culbuteur (61) d'étrangleur, une tige de liaison coulissante (62), un ressort de rappel (64) et un dispositif de commande de température de métal (65) destiné à commander la position du culbuteur (61) d'étrangleur. La tige de liaison coulissante (62) est reliée au culbuteur (3) de papillon des gaz et à l'arbre (5) d'étrangleur du carburateur, le ressort de rappel (64) est disposé sur l'arbre (5) d'étrangleur et est relié au corps principal (1) de carburateur, le culbuteur (61) d'étrangleur est relié rotatif à l'arbre (5) d'étrangleur, et sur le culbuteur (61) d'étrangleur est disposé une surface de travail de culbuteur servant à entraîner la rotation de l'arbre (5) d'étrangleur. Le dispositif de commande de température de métal (65) est relié au culbuteur (61) d'étrangleur et est disposé sur un composant à rayonnement thermique d'un moteur. Le carburateur pratique à utiliser, simple de structure, et fonctionne de façon constante et fiable.
PCT/CN2011/000011 2010-07-23 2011-01-12 Carburateur et mécanisme de commande d'étrangleur associé WO2012009944A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN2010102385778A CN101922381B (zh) 2010-07-23 2010-07-23 一种化油器及其阻风门控制机构
CN201010238577.8 2010-07-23

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WO2012009944A1 true WO2012009944A1 (fr) 2012-01-26

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9464588B2 (en) 2013-08-15 2016-10-11 Kohler Co. Systems and methods for electronically controlling fuel-to-air ratio for an internal combustion engine
US10054081B2 (en) 2014-10-17 2018-08-21 Kohler Co. Automatic starting system

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Publication number Priority date Publication date Assignee Title
CN101922381B (zh) * 2010-07-23 2012-07-04 陈俭敏 一种化油器及其阻风门控制机构
CN103867342B (zh) * 2012-12-10 2016-04-06 陈俭敏 用于调整发动机转速的调速装置及具有该装置的化油器
CN104847534A (zh) * 2014-11-28 2015-08-19 重庆斯凯力科技有限公司 化油器温控开关
CN104847533B (zh) * 2014-11-29 2017-06-13 重庆斯凯力科技有限公司 螺杆式化油器温控开关
CN105952530A (zh) * 2016-07-08 2016-09-21 浙江中坚科技股份有限公司 多燃料变频发电机的燃料供给系统
CN111692016A (zh) * 2019-03-13 2020-09-22 华益机电有限公司 一种燃油供给系统
CN112943485A (zh) * 2021-02-24 2021-06-11 隆鑫通用动力股份有限公司 一种通用发动机

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JPH0211856A (ja) * 1988-06-29 1990-01-16 Mitsubishi Heavy Ind Ltd 内燃機関のオートチョーク装置
CN1740544A (zh) * 2004-08-24 2006-03-01 布里格斯斯特拉顿公司 用于发动机的自动阻风门
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Publication number Priority date Publication date Assignee Title
US9464588B2 (en) 2013-08-15 2016-10-11 Kohler Co. Systems and methods for electronically controlling fuel-to-air ratio for an internal combustion engine
US10240543B2 (en) 2013-08-15 2019-03-26 Kohler Co. Integrated ignition and electronic auto-choke module for an internal combustion engine
US10794313B2 (en) 2013-08-15 2020-10-06 Kohler Co. Integrated ignition and electronic auto-choke module for an internal combustion engine
US10054081B2 (en) 2014-10-17 2018-08-21 Kohler Co. Automatic starting system

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