WO2011009373A1 - 通用汽油发动机的化油器阻风门自动控制机构 - Google Patents
通用汽油发动机的化油器阻风门自动控制机构 Download PDFInfo
- Publication number
- WO2011009373A1 WO2011009373A1 PCT/CN2010/074896 CN2010074896W WO2011009373A1 WO 2011009373 A1 WO2011009373 A1 WO 2011009373A1 CN 2010074896 W CN2010074896 W CN 2010074896W WO 2011009373 A1 WO2011009373 A1 WO 2011009373A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- choke
- shaft
- carburetor
- gasoline engine
- hole
- Prior art date
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
- 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 present invention relates to a control mechanism for a carburetor choke, and more particularly to a carburetor choke automatic control mechanism for a general-purpose gasoline engine.
- a choke valve of a carburetor is an important component of a gasoline engine that uses a carburetor for controlling the amount of air intake into the carburetor, and has a great influence on the starting performance of the gasoline engine.
- the choke valve is in the closed position when the gasoline engine is started, so that the amount of air entering the carburetor is reduced, and the vacuum at the throat is increased, so that more gasoline can be sucked out, and the mixed gas formed in the carburetor becomes thicker.
- the choke valve should be opened to increase the amount of air entering the carburetor to dilute the mixture, which helps to mix.
- the full combustion of the gas prevents the gasoline engine from being too rich to make the gasoline engine run poorly or overheat. Therefore, the opening of the choke must be timely and flexible to ensure that the choke is in the fully open position during normal operation of the gasoline engine.
- the general-purpose gasoline engine especially the lawn machine mainly powered by the vertical axis gasoline engine, mostly uses manual mode to control the opening and closing of the choke.
- the control handle provided on the gasoline engine is used to drive the control cable to open the choke valve.
- this manual control device may sometimes be forgotten to turn on or off, causing the gasoline engine to malfunction and not working properly.
- a vane mechanism is arranged in the air duct of the fan air duct, and the vane mechanism is connected with the choke through the pull rod, and after passing the engine, the air duct passes through the air duct. The air flow blows the blade movement, and the blade movement drives the choke to open.
- the choke valve automatically returns to close under the action of the torsion spring.
- the automatic control mechanism of the choke valve solves the cumbersome and existing deficiencies of the manual control of the choke, another problem arises, that is, the engine will automatically close once the engine is stopped, and the engine is in a cold state when the engine needs to be restarted. Or the heat engine state, the choke valve is in a closed state that makes the mixed gas rich.
- the requirements for starting the engine in the cold state and starting in the hot state are different. In the case of cold start, it is necessary to close the choke to make the mixed gas reach the concentration suitable for ignition; and in the case of the heat engine, the engine is started. In the high temperature state, the gasoline in the carburetor is more easily vaporized, and the mixed gas is richer.
- the object of the present invention is to provide a carburetor choke automatic control mechanism for a general-purpose gasoline engine, which is provided by a control device for driving the choke opening and a heat-sensitive mechanism.
- the function of the choke can be automatically opened when the engine is working, and kept in the state of the hot machine, and automatically turned off in the cold state, which solves the problem that the general gasoline engine can be normally and smoothly started in the cold and hot state.
- a gasoline engine is equipped with a carburetor, a fan air hood, a muffler, a damper is provided at the air inlet of the carburetor, and a rotatable connection on the fan air hood is used.
- the control device for driving the choke valve to open is one end of the blade, the other end is a control arm, and the rotation center bushing is between the blade and the control arm, and the sleeve gap is matched with the fan guide.
- the blade On the shaft provided on the side wall of the windshield, the blade extends into the air duct of the fan and is located in the air duct.
- One end of the shaft of the choke valve is provided with a crank, and the first pull rod is connected between the crank and the control arm, and the choke valve a limit device is disposed on the shaft, a heat sensitive mechanism is mounted on the muffler, and a second pull rod is connected between the limit device and the heat sensitive mechanism, and the shaft of the choke is sleeved to make the choke closed normally.
- Reset torsion spring The crank is eccentrically provided with a pull rod jack, and the side of the crank is provided with two straight limit surfaces, and the two straight limit surfaces are at an angle of 90 degrees, and the corners of the two limit surfaces are arcs. .
- the limiting device is provided with a shaft hole that cooperates with the shaft of the choke valve and a circular hole that cooperates with the second pull 4, and a limiting portion is arranged between the shaft hole and the round hole.
- the limiting device is a stepped structure having two planes of high and low.
- the vertical plane between the high and low planes of the stepped structure is a limiting portion, and the circular plane is matched with the second pulling rod on the high plane, on the plane
- a shaft hole is provided to cooperate with the shaft of the choke.
- the blade, the control arm and the rotating central sleeve of the control device for driving the choke opening are integrally formed, the blade is a single blade, the control arm has a curved shape, and the control arm is provided with a rod insertion hole.
- the heat sensitive mechanism comprises a heat-sensitive coil spring and a casing, wherein the heat-sensitive coil spring is disposed in the casing, and the side wall of the casing is provided with a through hole, and the fixed end of the heat-sensitive coil spring is fixedly connected with the casing, and the free end A winding head is provided for articulating with a second pull rod that is inserted through the through hole.
- the shaft of the choke valve is provided with a reset torsion spring for the choke valve to be normally closed, and the choke valve is normally closed when the cold machine is stopped, so that the engine is mixed when starting.
- the combined gas concentration is suitable for the ignition concentration, allowing the engine to start smoothly.
- the fan air hood is rotatably connected to a control device for driving the choke to open, and the control device for driving the choke opening is one end of the blade, and the other end is a control arm, and the blade and the control arm are rotated
- the central sleeve is sleeved on the shaft provided on the side wall of the fan air duct, and the vane extends into the air duct of the fan and is located in the air duct.
- the end of the shaft of the choke valve is provided with a crank, a crank and a control arm. Connect the first lever between them.
- the blades of the control device are blown by the wind of the fan, and the control device for driving the choke opening can be rotated by a certain angle with the shaft on the side wall of the fan air duct, and the control arm of the control device passes the first
- the pull rod drives the choke to open and rotate, so that sufficient air enters the carburetor to mix with the gasoline to form a mixed gas concentration suitable for normal operation of the engine.
- a stopper device is disposed on the shaft of the choke valve, a heat sensitive mechanism is mounted on the muffler, and a second pull rod is connected between the limiting device and the heat sensitive mechanism.
- the temperature of the muffler rises and is transmitted to the heat sensitive mechanism, and the heat sensitive mechanism generates motion under the influence of high temperature, and the second pull rod is driven to pull the limit device on the shaft of the choke to the position where the choke is fully opened.
- the heat-sensitive mechanism uses a heat-sensitive coil spring, and the function of the thermal coil spring to curl at a high temperature pulls the second rod to drive the position of the limit device, thereby ensuring the crank limit of the shaft of the choke in the state of the heat engine.
- Position limit the choke to return to the closed state under the action of the reset torsion spring.
- the thermal coil spring can be restored to its original state after the engine is stopped and cooled, eliminating the restriction on the choke, and the choke can be restored to the closed state by the action of the reset torsion spring to ensure the concentration of the mixture at the start of the cold.
- FIG. 1 is a schematic structural view of an engine mounted on the engine;
- FIG. 2 is a schematic structural view of an automatic control mechanism of the present invention;
- 3 is a schematic structural view of a choke valve of the present invention;
- FIG. 4 is a schematic structural view of a stopper device of the present invention;
- FIG. 5 is an outline view of a heat sensitive mechanism of the present invention;
- 7 is a connection diagram of the second pull rod and the heat sensitive mechanism.
- 1 is a fan air hood
- 2 is a blade
- 3 is a bushing
- 4 is a control arm
- 5 is a first pull
- 6 is a crank
- 6a, 6b are a clamping face
- 6c is a puller 7
- 8 is the choke
- 8a is the shaft
- 9 is the limit device
- 9a is the limit
- 9b is the shaft hole
- 9c is the round hole
- 10 is the second pull
- 11 is the thermal mechanism
- 11a is the housing
- l ib is the through hole
- 12 is the muffler
- 13 is the thermal coil spring
- 13a is the winding head
- 14 is the carburetor.
- a carburetor 14, a fan air duct 1, and a muffler 12 are mounted on a general gasoline engine.
- a damper 8 is provided at the inlet of the carburetor 14, and the choke 8 is rotatably mounted in the intake port of the carburetor 14 via the shaft 8a.
- the fan air hood 1 is rotatably connected to a control device for driving the choke to open, and the control device for driving the choke opening is provided with a blade 2 at one end and a control arm 4 at the other end, and the blade 2 and
- the control arm 4 is a rotating central bushing 3, and the blade 2, the control arm 4 and the rotating center bushing 3 for driving the choke opening are integrally formed, the blade 2 is a single blade, and the control arm 4
- the control arm 4 is provided with a pull rod jack, and the sleeve 3 is gap-fitted on the shaft provided on the side wall of the fan air duct 1, and the vane 2 extends into the fan air duct 1 in the air duct for use in the air duct.
- the control device that drives the choke opening can rotate around the shaft under the wind blown by the fan.
- One end of the shaft 8a of the choke 8 is provided with a crank 6 , and the crank 6 is eccentrically provided with a rod insertion hole 6c.
- the side surface of the crank 6 is provided with two straight limiting surfaces 6a, 6b, and a limiting surface 6a.
- the limiting surface of the choke 8 is in the fully open position, and the limiting surface 6b is a limiting surface of the blocking position of the choke 8.
- the two limiting surfaces 6a and 6b are at an angle of 90 degrees, and the two limiting surfaces are connected.
- the corner of the arc is an arc that avoids the cues when the crank 6 is rotated.
- the first pull rod 5 is connected between the crank 6 and the control arm 4 for driving the control device for opening the choke.
- the two ends of the first pull rod 5 are respectively bent, and one end of the first pull rod 5 is bent and inserted into the rod insertion hole 6c of the crank 6. Inside, the other end is bent and inserted into the rod insertion hole of the control arm 4, so that the rotation of the control arm 4 can drive the crank 6 to rotate to open the choke 8.
- a limiting device 9 is sleeved on the shaft 8a of the choke 8 .
- the limiting device 9 is provided with a shaft hole 9b that cooperates with the shaft of the choke valve and a circular hole 9c that cooperates with the second rod. Hole 9b and round hole 9c
- a limiting portion 9a is provided between the two.
- the limiting device 9 is formed as a stepped structure having two planes of high and low.
- the vertical plane between the high and low planes of the stepped structure is a limiting portion 9a, and the circular hole 9c is matched with the second pulling rod on the high plane.
- the lower plane is provided with a shaft hole 9b that cooperates with the shaft of the choke.
- the stopper 9 is fitted to the shaft 8a of the choke through the shaft hole 9b so as to be rotatable relative to the shaft 8a.
- the shaft 8a of the choke 8 is sleeved with a return torsion spring 7 for normally closing the choke valve, and the choke valve 8 is returned to the closed state by the action of the return torsion spring 7 without limitation.
- a heat sensitive mechanism 11 is mounted on the muffler 12, and the second pull rod 10 is connected between the limiting device 9 and the heat sensitive mechanism 11.
- the heat-sensitive mechanism 11 includes a heat-sensitive coil spring 13 and a casing 11a.
- the heat-sensitive coil spring 13 is disposed in the casing 11a.
- the side wall of the casing 11a is provided with a through hole lib, and the heat-sensitive coil spring 13 is fixed.
- the end is fixedly connected to the housing, and the free end is provided with a winding head 13a hinged with a second pull rod 10 penetrating from the through hole lib. Both ends of the second pull rod 10 are bent for insertion, and are respectively inserted into the limit device 9 and the heat sensitive mechanism 11 by bending to form a rotatable hinge.
- the through hole lib of the side wall of the casing 11a is set as a strip hole or the aperture is much larger than the diameter of the second tie rod 10, so that the end bend of the second tie rod 10 can pass through the through hole lib and the thermal coil spring
- the free end winding head 13a of 13 is inserted and forms a rotatable hinge.
- the thermal coil spring 13 is curled as the temperature of the engine muffler rises, thereby driving the second lever and overcoming the torque of the reset torsion spring 7, and the limiting device 9 is controlled to limit the position of the choke 8 to return, and the limit is passed.
- the limiting portion 9a of the device 9 abuts against the limiting surface 6a of the full-opening position of the choke valve of the crank 6, so that the choke valve 8 is kept open in the state of the heat engine, so that the mixture is not excessively concentrated when the engine is started in the heat engine state, and the mixture is ensured.
- the engine can be ignited and started in the hot state. Once the engine is cooled down, the thermal coil spring 13 is restored to its original state as the temperature is lowered, and the control of the limiting device 9 is eliminated. Under the action of the reset torsion spring 7, the choke valve 8 is returned to the closed state to provide conditions for the cold state to start.
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)
Description
通用汽油发动机的化油器阻风门自动控制才 1 勾 技术领域 本发明涉及一种化油器阻风门的控制机构， 具体涉及一种通用汽油发动 机的化油器阻风门自动控制机构。 背景技术 化油器的阻风门是釆用化油器的汽油发动机用于控制进入化油器的空气 进气量的重要部件， 对汽油机的启动性能影响非常大。 阻风门在汽油机冷机 启动时处于关闭位置， 使进入化油器的空气量减少， 使喉管处真空度提高， 从而能吸出较多的汽油， 让化油器中形成的混合气体变浓， 满足汽油机启动 时所需较浓混合气的要求， 使汽油机更容易迅速启动； 一旦汽油机启动后怠 速稳定了就要打开阻风门， 使进入化油器的空气量增加稀释混合气， 有助于 混合气的充分燃烧， 防止混合气过浓使汽油机运行不良或过热。 因此， 阻风 门的开启必须及时、 灵活， 以保证汽油机在正常工作时阻风门处于全开启位 置。 目前的通用汽油机， 特别是主要以垂直轴汽油机为动力的草坪机大都是 釆用手动方式来控制阻风门的开启和关闭， 一般是利用设置在汽油机上的操 纵手柄带动控制拉索使阻风门开启或关闭， 这种手动的控制装置有时可能会 因人为忘记开启或关闭， 导致汽油机运行不良， 不能正常工作。 也有釆用自 动方式来控制阻风门的开启和关闭的， 即在风扇导风罩的风道内设置一个叶 片机构， 叶片机构通过拉杆与阻风门连接， 当发动机启动运转后， 从导风罩 内经过的气流吹动叶片运动， 叶片运动带动阻风门打开， 停机时， 阻风门在 扭簧的作用下自动回位关闭。 这种阻风门自动控制机构虽然解决了人工控制 阻风门的繁瑣和存在的不足， 但又出现另一问题， 即发动机一旦停机阻风门 都会自动关闭， 当发动机需再启动时， 无论发动机处于冷机或热机状态， 阻 风门都处于使混合气体变浓的关闭状态。 然而， 发动机处于冷机状态启动和 处于热机状态启动的要求是不一样的， 在冷机情况下启动， 需要通过关闭阻 风门使混合气体达到利于点燃的浓度； 而在热机情况下启动， 因发动机处在 高温状态中， 化油器内的汽油更容易汽化， 混合气体偏浓， 在这种情况下如 果还使阻风门关闭就会造成混合气体过浓， 导致发动机启动困难甚至无法启 动。
发明内容 本发明的目的是针对现有技术存在的不足， 提供一种通用汽油发动机的 化油器阻风门自动控制机构， 它通过设有的用于带动阻风门打开的控制装置 和热敏机构共同作用， 使阻风门能够在发动机工作时自动打开， 并在热机状 态下保持开启状态， 在冷机状态时自动关闭， 解决了通用汽油发动机在冷、 热机状态下均能正常顺利启动的问题。 本发明的目的是这样实现的： 汽油发动机上安装有化油器、风扇导风罩、 消声器， 化油器进气口处设有阻风门， 所述风扇导风罩上可转动的连接一用 于带动阻风门打开的控制装置， 所述用于带动阻风门打开的控制装置的一端 为叶片， 另一端为控制臂， 叶片与控制臂之间为旋转中心轴套， 轴套间隙配 合在风扇导风罩侧壁上设有的轴上， 叶片伸入风扇导风罩内位于风道中， 所 述阻风门的轴的一端设有曲柄， 曲柄与控制臂之间连接第一拉杆， 所述阻风 门的轴上活套一限位装置， 所述消声器上安装一热敏机构， 限位装置与热敏 机构之间连接第二拉杆， 所述阻风门的轴上套有使阻风门呈常关闭状态的复 位扭簧。 所述曲柄上偏心设有拉杆插孔， 曲柄的侧面设有两段平直的限位面， 两 段平直的限位面之间呈 90度角， 两限位面相连的转角为圓弧。 所述限位装置上设有一个与阻风门的轴配合的轴孔和一个与第二拉 4干配 合的圓孔， 轴孔与圓孔之间设有限位部。 所述限位装置为具有高、 低两平面的阶梯结构， 阶梯结构的高、 低平面 之间的垂直面为限位部， 高平面上设有与第二拉杆配合的圓孔， 氐平面上设 有与阻风门的轴配合的轴孔。 所述用于带动阻风门打开的控制装置的叶片、 控制臂和旋转中心轴套为 一体成型结构， 叶片为单叶片， 控制臂为弯曲形状， 控制臂上设有拉杆插孔。 所述热敏机构包括热敏卷状弹簧和壳体， 热敏卷状弹簧设于壳体内， 壳 体侧壁设有通孔， 热敏卷状弹簧的固定端与壳体固定连接， 自由端设有卷头 与从通孔穿入的第二拉杆铰接。 由于釆用了上述方案， 所述阻风门的轴上套有使阻风门呈常关闭状态的 复位扭簧， 阻风门在冷机停机状态下处于常关闭状态， 使发动机启动时的混
合气体浓度达到适于点火浓度， 让发动机能够顺利点火启动。 所述风扇导风 罩上可转动的连接一用于带动阻风门打开的控制装置， 用于带动阻风门打开 的控制装置的一端为叶片， 另一端为控制臂， 叶片与控制臂之间为旋转中心 轴套， 轴套间隙配合在风扇导风罩侧壁上设有的轴上， 叶片伸入风扇导风罩 内位于风道中， 所述阻风门的轴的一端设有曲柄， 曲柄与控制臂之间连接第 一拉杆。 发动机启动后通过风扇的风力吹动控制装置的叶片， 使用于带动阻 风门打开的控制装置能够以风扇导风罩侧壁上的轴为旋转中心转动一定角 度， 该控制装置的控制臂通过第一拉杆带动阻风门转动打开， 使充足的空气 进入化油器与汽油混合， 形成适于发动机正常工作的混合气体浓度。 所述阻 风门的轴上活套一限位装置， 所述消声器上安装一热敏机构， 限位装置与热 敏机构之间连接第二拉杆。 在发动机工作时， 消声器的温度升高并传导给热 敏机构， 热敏机构在高温影响下产生运动， 带动第二拉杆将阻风门的轴上的 限位装置拉动到阻风门完全打开的位置， 限制阻风门向关闭位置回位， 当发 动机工作一段时间后停机， 在发动机处于热机状态下， 消声器的温度没有降 低到冷却状态时， 热敏机构受高温影响仍然控制着限位装置， 使阻风门不能 回位关闭， 这时在热机状态下再次启动发动机， 阻风门处于打开状态， 充足 的空气能够进入化油器， 使混合气体稀释， 防止出现发动机热机启动混合气 过浓而使发动机启动困难或无法启动的情况， 保证热机状态下也能自动控制 阻风门处于打开状态， 让发动机顺利启动。 而所述热敏机构釆用热敏卷状弹 簧， 利用热敏卷状弹簧在高温下卷曲的功能拉动第二拉杆带动限位装置移动 位置， 能保证热机状态下对阻风门的轴的曲柄限位， 限制阻风门在复位扭簧 的作用下回到关闭状态。 并且热敏卷状弹簧能够在发动机停机冷却后恢复原 状， 消除对阻风门的限制， 使阻风门能够在复位扭簧的作用恢复关闭状态， 以保证冷机启动时的混合气浓度。 釆用本发明结构后， 使发动机的化油器阻风门实现了在冷、 热机状态下 的自动控制， 提高了发动机的启动性能。 下面结合附图和实施例对本实用新型作进一步说明。 附图说明 图 1为发动机上安装本发明的结构示意图； 图 2为本发明自动控制机构的结构示意图；
图 3为本发明的阻风门的结构示意图； 图 4为本发明的限位装置的结构示意图； 图 5为本发明的热敏机构的外形图； 图 6为图 5的 A-A向剖面图； 图 7为第二拉杆与热敏机构的连接图。 附图中， 1为风扇导风罩， 2为叶片， 3为轴套， 4为控制臂， 5为第一 拉才干， 6为曲柄， 6a、 6b为卩艮位面， 6c为拉才干插 7为复位扭簧， 8为阻 风门， 8a为轴， 9为限位装置， 9a为限位部， 9b为轴孔， 9c为圓孔， 10为 第二拉才干， 11为热敏机构， 11a为壳体， l ib为通孔， 12为消声器， 13为热 敏卷状弹簧， 13a为卷头， 14为化油器。 具体实施方式 参见图 1至图 7, 在通用汽油发动机上安装有化油器 14、 风扇导风罩 1、 消声器 12。 化油器 14进气口处设有阻风门 8 , 阻风门 8通过轴 8a可转动的 安装在化油器 14 的进气口内。 所述风扇导风罩 1 上可转动的连接一用于带 动阻风门打开的控制装置， 所述用于带动阻风门打开的控制装置的一端为叶 片 2 , 另一端为控制臂 4 , 叶片 2与控制臂 4之间为旋转中心轴套 3 , 所述用 于带动阻风门打开的控制装置的叶片 2、 控制臂 4和旋转中心轴套 3为一体 成型结构， 叶片 2为单叶片， 控制臂 4为弯曲形状， 控制臂 4上设有拉杆插 孔， 轴套 3间隙配合在风扇导风罩 1侧壁上设有的轴上， 叶片 2伸入风扇导 风罩 1 内位于风道中， 使用于带动阻风门打开的控制装置能够在风扇吹动的 风力下以轴为中心转动。 所述阻风门 8的轴 8a的一端设有曲柄 6 , 所述曲柄 6上偏心设有拉杆插孔 6c, 曲柄 6的侧面设有两段平直的限位面 6a、 6b , 限 位面 6a为阻风门 8全打开位置的限位面， 限位面 6b为阻风门 8关闭位置的 限位面， 两段平直的限位面 6a、 6b之间呈 90度角， 两限位面相连的转角为 圓弧， 该圓弧能够在曲柄 6转动时避免千涉。 所述曲柄 6与用于带动阻风门 打开的控制装置的控制臂 4之间连接第一拉杆 5 , 第一拉杆 5的两端分别为 折弯， 其一端折弯插入曲柄 6 的拉杆插孔 6c 内， 另一端折弯插入控制臂 4 的拉杆插孔内， 使控制臂 4的转动能够带动曲柄 6转动打开阻风门 8。 所述 阻风门 8的轴 8a上活套一限位装置 9 ,所述限位装置 9上设有一个与阻风门 的轴配合的轴孔 9b和一个与第二拉杆配合的圓孔 9c, 轴孔 9b与圓孔 9c之
间设有限位部 9a。 所述限位装置 9制作为具有高、 氏两平面的阶梯结构， 阶 梯结构的高、 低平面之间的垂直面为限位部 9a , 高平面上设有与第二拉杆配 合的圓孔 9c, 低平面上设有与阻风门的轴配合的轴孔 9b。 限位装置 9通过 轴孔 9b 间隙配合在阻风门的轴 8a上， 可相对于轴 8a转动。 所述阻风门 8 的轴 8a上套有使阻风门呈常关闭状态的复位扭簧 7 , 阻风门 8在不受限制的 情况下通过复位扭簧 7的作用回到关闭状态。 所述消声器 12上安装一热敏 机构 11 , 限位装置 9与热敏机构 11之间连接第二拉杆 10。 所述热敏机构 11 包括热敏卷状弹簧 13和壳体 11a, 热敏卷状弹簧 13设于壳体 11a内， 壳体 11a侧壁设有通孔 lib , 热敏卷状弹簧 13的固定端与壳体固定连接， 自由端 设有卷头 13a与从通孔 lib穿入的第二拉杆 10铰接。 所述第二拉杆 10的两 端设为用于插接的折弯， 通过折弯分别与限位装置 9、 热敏机构 11插接形成 可转动的铰接。 壳体 11a侧壁的通孔 lib设为条形孔或者孔径比第二拉杆 10 直径大得多， 以方便第二拉杆 10的端头折弯能够穿过通孔 lib后与热敏卷 状弹簧 13的自由端卷头 13a插接， 并形成可转动的铰接。 热敏卷状弹簧 13 随发动机消声器温度升高产生卷曲， 由此带动第二拉杆动作并克服复位扭簧 7的扭力， 将限位装置 9控制在限制阻风门 8回位的位置， 通过限位装置 9 的限位部 9a抵住曲柄 6的阻风门全打开位置的限位面 6a , 使阻风门 8在热 机状态下保持打开状态， 让发动机在热机状态启动时混合气不会过浓， 保证 发动机在热机状态下能够顺利点火启动。 一旦发动机停机冷却后， 热敏卷状 弹簧 13随温度降低恢复原状， 消除对限位装置 9的控制， 在复位扭簧 7的 作用下阻风门 8恢复关闭状态， 为冷机状态启动提供条件。
Claims
权 利 要 求 书 一种通用汽油发动机的化油器阻风门自动控制机构， 汽油发动机上安 装有化油器、 风扇导风罩、 消声器， 化油器进气口处设有阻风门， 其 特征在于： 所述风扇导风罩上可转动的连接一用于带动阻风门打开的 控制装置， 所述用于带动阻风门打开的控制装置的一端为叶片， 另一 端为控制臂， 叶片与控制臂之间为旋转中心轴套， 轴套间隙配合在风 扇导风罩侧壁上设有的轴上， 叶片伸入风扇导风罩内位于风道中， 所 述阻风门的轴的一端设有曲柄， 曲柄与控制臂之间连接第一拉杆， 所 述阻风门的轴上活套一限位装置， 所述消声器上安装一热敏机构， 限 位装置与热敏机构之间连接第二拉杆， 所述阻风门的轴上套有使阻风 门呈常关闭状态的复位扭簧。 根据权利要求 1 所述的通用汽油发动机的化油器阻风门自动控制机 构， 其特征在于： 所述曲柄上偏心设有拉 4干插孔， 曲柄的侧面设有两 段平直的限位面， 两段平直的限位面之间呈 90度角， 两限位面相连的 转角为圓弧。 根据权利要求 1 所述的通用汽油发动机的化油器阻风门自动控制机 构， 其特征在于： 所述限位装置上设有一个与阻风门的轴配合的轴孔 和一个与第二拉杆配合的圓孔， 轴孔与圓孔之间设有限位部。 根据权利要求 1或 3所述的通用汽油发动机的化油器阻风门自动控制 机构， 其特征在于： 所述限位装置为具有高、 氏两平面的阶梯结构， 阶梯结构的高、 氏平面之间的垂直面为限位部， 高平面上设有与第二 拉杆配合的圓孔， 低平面上设有与阻风门的轴配合的轴孔。 根据权利要求 1 所述的通用汽油发动机的化油器阻风门自动控制机 构， 其特征在于： 所述用于带动阻风门打开的控制装置的叶片、 控制 臂和旋转中心轴套为一体成型结构， 叶片为单叶片， 控制臂为弯曲形 状， 控制臂上设有拉杆插孔。 根据权利要求 1 所述的通用汽油发动机的化油器阻风门自动控制机 构， 其特征在于： 所述热敏机构包括热敏卷状弹簧和壳体， 热敏卷状 弹簧设于壳体内， 壳体侧壁设有通孔， 热敏卷状弹簧的固定端与壳体
固定连接， 自由端设有卷头与从通孔穿入的第二拉杆铰接。
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910104438.3 | 2009-07-24 | ||
| CN2009101044383A CN101624946B (zh) | 2009-07-24 | 2009-07-24 | 通用汽油发动机的化油器阻风门自动控制机构 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2011009373A1 true WO2011009373A1 (zh) | 2011-01-27 |
Family
ID=41520907
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/CN2010/074896 WO2011009373A1 (zh) | 2009-07-24 | 2010-07-01 | 通用汽油发动机的化油器阻风门自动控制机构 |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN101624946B (zh) |
| WO (1) | WO2011009373A1 (zh) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101624946B (zh) * | 2009-07-24 | 2012-01-11 | 隆鑫通用动力股份有限公司 | 通用汽油发动机的化油器阻风门自动控制机构 |
| CN103629014B (zh) * | 2012-08-21 | 2016-08-31 | 宁波大叶园林设备有限公司 | 通用汽油机化油器阻风门的自动控制机构 |
| CN104564426A (zh) * | 2015-01-26 | 2015-04-29 | 重庆大江动力设备制造有限公司 | 发动机化油器阻风门自动控制机构 |
| CN105179110B (zh) * | 2015-10-10 | 2018-04-03 | 隆鑫通用动力股份有限公司 | 自动阻风门系统及其发动机 |
| CN107725218B (zh) * | 2017-11-08 | 2023-12-26 | 绿田机械股份有限公司 | 汽油发动机的自动风门化油器 |
| CN107701332B (zh) * | 2017-11-08 | 2024-02-06 | 绿田机械股份有限公司 | 一键启动式汽油发动机 |
| JP6976208B2 (ja) * | 2018-03-23 | 2021-12-08 | 川崎重工業株式会社 | 汎用エンジン |
| CN108317020A (zh) * | 2018-04-17 | 2018-07-24 | 台州市椒江柏森机械有限公司 | 一种发电机化油器油门和阻风门控制机构 |
| CN110735734B (zh) * | 2019-11-04 | 2020-12-18 | 浙江省台州市杰特瑞卫浴科技有限公司 | 一种自复位阻风门轴 |
| 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 |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3863614A (en) * | 1973-11-19 | 1975-02-04 | Briggs & Stratton Corp | Thermostatic automatic choke control for small engines |
| JP2001065407A (ja) * | 1999-08-30 | 2001-03-16 | Kyoritsu Seisakusho:Kk | エンジンのオートチョーク装置 |
| CN1829857A (zh) * | 2003-07-30 | 2006-09-06 | 布里格斯斯特拉顿公司 | 用于发动机的自动阻气门 |
| CN201031743Y (zh) * | 2007-04-24 | 2008-03-05 | 重庆宗申技术开发研究有限公司 | 汽油机叶轮转动式自动阻风门机构 |
| CN201041094Y (zh) * | 2007-04-24 | 2008-03-26 | 重庆宗申技术开发研究有限公司 | 汽油机挡风板摆动式自动阻风门机构 |
| CN101624946A (zh) * | 2009-07-24 | 2010-01-13 | 隆鑫工业有限公司 | 通用汽油发动机的化油器阻风门自动控制机构 |
| CN201461135U (zh) * | 2009-07-24 | 2010-05-12 | 隆鑫工业有限公司 | 通用汽油发动机的化油器阻风门自动控制机构 |
-
2009
- 2009-07-24 CN CN2009101044383A patent/CN101624946B/zh not_active Expired - Fee Related
-
2010
- 2010-07-01 WO PCT/CN2010/074896 patent/WO2011009373A1/zh active Application Filing
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3863614A (en) * | 1973-11-19 | 1975-02-04 | Briggs & Stratton Corp | Thermostatic automatic choke control for small engines |
| JP2001065407A (ja) * | 1999-08-30 | 2001-03-16 | Kyoritsu Seisakusho:Kk | エンジンのオートチョーク装置 |
| CN1829857A (zh) * | 2003-07-30 | 2006-09-06 | 布里格斯斯特拉顿公司 | 用于发动机的自动阻气门 |
| CN201031743Y (zh) * | 2007-04-24 | 2008-03-05 | 重庆宗申技术开发研究有限公司 | 汽油机叶轮转动式自动阻风门机构 |
| CN201041094Y (zh) * | 2007-04-24 | 2008-03-26 | 重庆宗申技术开发研究有限公司 | 汽油机挡风板摆动式自动阻风门机构 |
| CN101624946A (zh) * | 2009-07-24 | 2010-01-13 | 隆鑫工业有限公司 | 通用汽油发动机的化油器阻风门自动控制机构 |
| CN201461135U (zh) * | 2009-07-24 | 2010-05-12 | 隆鑫工业有限公司 | 通用汽油发动机的化油器阻风门自动控制机构 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101624946A (zh) | 2010-01-13 |
| CN101624946B (zh) | 2012-01-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2011009373A1 (zh) | 通用汽油发动机的化油器阻风门自动控制机构 | |
| US9273636B2 (en) | Automatic control apparatus for carburetor choke valve | |
| JP4732378B2 (ja) | エンジン制御装置 | |
| CN100360777C (zh) | 化油器的阻风门控制装置 | |
| US7097163B2 (en) | Device for controlling choke valve of carburetor | |
| CN101922381B (zh) | 一种化油器及其阻风门控制机构 | |
| JP5318075B2 (ja) | オートチョーク装置 | |
| CN201461135U (zh) | 通用汽油发动机的化油器阻风门自动控制机构 | |
| CN103629014B (zh) | 通用汽油机化油器阻风门的自动控制机构 | |
| CN105179110B (zh) | 自动阻风门系统及其发动机 | |
| CN204386766U (zh) | 化油器的步进控制阻风门装置 | |
| CN104564426A (zh) | 发动机化油器阻风门自动控制机构 | |
| JP2005155525A (ja) | 手動チョーク機構を具えた気化器 | |
| CN201786481U (zh) | 一种化油器及其阻风门控制机构 | |
| CN208619244U (zh) | 一种化油器的阻风门结构 | |
| CN207348980U (zh) | 汽油发动机的自动风门化油器 | |
| CN212429042U (zh) | 一种阻风门结构 | |
| CN110735734B (zh) | 一种自复位阻风门轴 | |
| JP4439435B2 (ja) | エンジンの吸気装置 | |
| JP3993433B2 (ja) | 動力作業機におけるチョーク弁制御装置の清掃構造 | |
| JP3828803B2 (ja) | 動力作業機における気化器のチョーク弁制御装置 | |
| JPH0248684Y2 (zh) | ||
| CN104533664A (zh) | 化油器的步进控制阻风门装置 | |
| JP2631326B2 (ja) | エンジン制御装置 | |
| JP2013185572A (ja) | チョーク装置 |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 10801932 Country of ref document: EP Kind code of ref document: A1 |
|
| NENP | Non-entry into the national phase |
Ref country code: DE |
|
| 122 | Ep: pct application non-entry in european phase |
Ref document number: 10801932 Country of ref document: EP Kind code of ref document: A1 |