WO2003044346A1 - An inlet guiding device for an internal combustion engine - Google Patents

An inlet guiding device for an internal combustion engine Download PDF

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Publication number
WO2003044346A1
WO2003044346A1 PCT/CN2002/000845 CN0200845W WO03044346A1 WO 2003044346 A1 WO2003044346 A1 WO 2003044346A1 CN 0200845 W CN0200845 W CN 0200845W WO 03044346 A1 WO03044346 A1 WO 03044346A1
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WO
WIPO (PCT)
Prior art keywords
intake
internal combustion
combustion engine
air
guide device
Prior art date
Application number
PCT/CN2002/000845
Other languages
French (fr)
Chinese (zh)
Inventor
Naicheng Tan
Yaofu Jiang
Original Assignee
Jiangsu Changfa Group
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 Jiangsu Changfa Group filed Critical Jiangsu Changfa Group
Priority to CNB028273524A priority Critical patent/CN100389250C/en
Priority to AU2002366207A priority patent/AU2002366207A1/en
Publication of WO2003044346A1 publication Critical patent/WO2003044346A1/en

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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
    • F02M29/00—Apparatus for re-atomising condensed fuel or homogenising fuel-air mixture
    • F02M29/04—Apparatus for re-atomising condensed fuel or homogenising fuel-air mixture having screens, gratings, baffles or the like
    • F02M29/06—Apparatus for re-atomising condensed fuel or homogenising fuel-air mixture having screens, gratings, baffles or the like generating whirling motion of mixture
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B31/00—Modifying induction systems for imparting a rotation to the charge in the cylinder
    • F02B31/04—Modifying induction systems for imparting a rotation to the charge in the cylinder by means within the induction channel, e.g. deflectors
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies

Definitions

  • the technical improvement scheme disclosed now mainly optimizes the shape and size of the intake port to increase the intake air flow to form a high-speed swirling vortex when passing through the intake port, and improve combustion.
  • US Pat. No. 4,274,386 discloses a through-plate type carburetor, which includes a thin plate clamped and fixed between the carburetor and the intake manifold.
  • the thin plate has a thickness consistent with the carburetor outlet and the intake manifold inlet.
  • the other side of the guide vane is also in the same direction.
  • the apex of the guide vane bends to form a cup or funnel shape to guide the fuel-air mixture that has not vaporized
  • the liquid part is further atomized and vaporized when being sucked into the air flow flowing toward the center of the opening at the apex of the plurality of guide vanes to further help inhale the air and further vaporize the mixture at the apex to improve combustion Efficiency and reduce pollution.
  • the transparent flat-plate carburetor is only suitable for gasoline engines.
  • US 4432312 The US patent discloses an intake port of an internal combustion engine with a variable vortex guide vane.
  • a plurality of rotatable guide vanes is provided at the end of the intake port adjacent to the head of the intake valve, thereby changing the engine throttle.
  • the vortex intensity of the intake air charge applied to the cylinder is changed accordingly to effectively meet the vortex required when the throttle is partially opened and the relatively free flow required when the throttle is fully opened or fully loaded Nai pieces.
  • to install these rotatable guide vanes on the cylinder head of the internal combustion engine adjacent to the inlet end of each intake valve head requires a major modification to the cylinder head, which may even weaken the strength of the cylinder head.
  • CN 2105560U Chinese utility model patent application specification discloses an air vortex device for an internal combustion engine, which includes a casing and a set of guide vanes extending in a radial direction from the casing, so as to generate vortex of the intake air.
  • the guide vanes have slits.
  • the air vortex device is installed at the center of the air cleaner and at the exhaust manifold inlet. Since the air sucked from the air cleaner needs to flow through the carburetor and the intake manifold to reach the combustion chamber of the internal combustion engine, it is difficult for the provided air swirl device to generate a strong swirl in the combustion chamber.
  • CN 2334879Y Chinese Utility Model Patent Specification discloses an engine turbine combustor installed between an air filter and a carburetor of an automobile engine, that is, an exhaust pipe of the air filter for increasing intake air.
  • the turbine combustor is composed of a cylindrical shell and a plurality of guide vanes arranged in the shell at equal intervals in the circumferential direction.
  • the guide vanes are fixed by means of a tongue formed at the end of the guide vane and a tongue hole formed on the shell wall Inside a cylindrical shell. Since the air still needs to pass through a long passage to reach the combustion chamber, it is still difficult for the turbine burner to generate a strong swirl in the combustion chamber.
  • the connection between each guide vane of the turbo-fuel burner and the cylindrical shell can only be completed through a separate assembly process, which does not meet the needs of mass production.
  • the present invention aims at overcoming the shortcomings of the prior art, and provides an intake guide device for an internal combustion engine, which has a simple structure, no moving parts, does not affect the volumetric efficiency of the engine, and can cause air to vortex when entering the cylinder.
  • the intake guide device is close to the intake valve of the internal combustion engine cylinder, which can not only enhance the intensity of the swirling vortex of the air entering the combustion chamber of the internal combustion engine, and make the fuel and air fully mixed, but also do not need to modify the cylinder head of the internal combustion engine.
  • the intake air guide device of the internal combustion engine is provided with inclined guide vanes to generate a swirling flow of the gas flowing through the guide vanes.
  • the guide device is installed at the connection between the cylinder head and the intake pipe of the internal combustion engine.
  • the guide vanes extend into an intake passage of a cylinder head of an internal combustion engine.
  • the internal combustion engine air intake guide device provided has a first-class linear guide vane, which is fixed to an intake flange interface of a cylinder head through a flange, and the guide vane is close to the intake air.
  • One side surface of the channel has a blade head partially extending into the vortex chamber of the cylinder head, preventing airflow from entering the vortex chamber in advance.
  • the guide vane is preferably biased toward the bottom surface of the intake passage, and the width of the blade head is narrowed to increase the flow area, reduce the flow resistance, and enhance the vortex intensity.
  • the tip portion of the blade head is preferably slightly curved toward the back of the blade.
  • the intake air guide device with guide vanes of the present invention is installed at the connection between the cylinder head and the intake pipe of the internal combustion engine, and the guide vanes extend into the intake passage of the internal combustion engine cylinder head, so that The guide vane is close to the intake valve of the internal combustion engine cylinder, preventing the airflow from entering the vortex chamber in advance, which can effectively enhance the swirling vortex intensity of the air entering the combustion chamber of the internal combustion engine, fully mix the fuel and air, improve combustion efficiency, and achieve fuel saving and purification
  • the purpose of the exhaust gas to reduce pollution, without the need to make major modifications to the cylinder head of the internal combustion engine, can be applied to the existing internal combustion engine.
  • the air intake deflector does not have any moving parts. Only an air duct deflector fixed between the cylinder head intake flange and the intake manifold flange can be used to prevent the airflow from entering the vortex chamber in advance.
  • the distance that the airflow advances makes it enter the vortex chamber tangentially, and then enter the air rainbow after the vortex is generated. In this way, the distance of the tangential travel of the airflow is increased, the flow of the tangential travel of the airflow is increased, and the vortex entering the gas red is enhanced; meanwhile, the condition of the airflow is improved, and the flow resistance is reduced.
  • the combustion process in the combustion chamber of the diesel engine is improved, and the fuel consumption of the diesel engine is reduced.
  • FIG. 1 is an assembly schematic diagram of a first embodiment of an air intake guide device of an internal combustion engine of the present invention
  • FIG. 2 is a cross-sectional view taken along the A-A section in FIG. 1;
  • FIG. 3 is a cross-sectional view of a first embodiment of an air intake guide device of an internal combustion engine of the present invention
  • FIG. 4 is a cross-sectional view taken along the B-B cross-section in FIG. 3;
  • FIG. 5 is a top view of an embodiment of an air intake guide device of an internal combustion engine according to the present invention
  • FIG. FIG. 6 is a plan view of a second embodiment of an air intake guide device for an internal combustion engine of the present invention
  • FIG. 7 is a plan view of a third embodiment of an air intake guide device for an internal combustion engine of the present invention
  • FIG. 8 is a cross-sectional view taken along the line C-C in FIG. 7;
  • FIG. 9 is an assembly cross-sectional view of a third embodiment of an intake air guide device of an internal combustion engine of the present invention.
  • FIG. 10 is a top cross-sectional view of a preferred embodiment of the air intake diversion device of the present invention installed in a single-cylinder diesel gas rainbow head;
  • FIG. 11 is an arrow A view of FIG. 10;
  • FIG. 12 is a sectional view taken along the B-B section in FIG. 10;
  • FIG. 13 is a top view of the embodiment shown in FIG. 10;
  • FIG. 14 is a front view of the embodiment shown in FIG. 10;
  • FIG. 15 is a side view of the embodiment shown in FIG. 14;
  • FIG. 16 is a perspective view of the embodiment shown in FIG.
  • FIG. 1 and FIG. 2 are assembly schematic diagrams of a first embodiment of an intake guide device of an internal combustion engine of the present invention.
  • the air intake guide device of the present invention is installed on the joint surface of the air intake pipe 5 and the gas rainbow head 4, and a guide vane 8 and a flange 81 sandwiched between the air intake pipe 5 and the air bow 4 are formed as a whole.
  • the bolts (not shown) connecting the intake pipe 5 and the gas head 4 are fixed, and the guide vanes 8 of the air intake guide device protrude into the intake passage 10 of the cylinder head 4. After the intake valve is opened, when the air flows through the intake duct 6 and the cylinder head intake passage 10, it is necessarily guided by the guide vanes 8 to generate a vortex.
  • the guide vane 8 Since the guide vanes 8 can reach the position close to the intake valve, the intake air entering the combustion chamber still maintains a strong swirling vortex, and fully mixed with the fuel for combustion.
  • the guide vane 8 is a curved surface, which is inclined at a certain angle to cause the airflow to rotate. The best inclination angle, geometry and material of the guide vane 8 can be selected through experiments to achieve the best fuel-saving and pollution-reducing effect. fruit.
  • the guide vane 8 and the gasket 1 are made into one body to reduce cost and facilitate assembly, and is suitable for mass production with a mold, and can be conveniently applied to an existing internal combustion engine.
  • FIGs 3, 4 and 5 show a first embodiment of the intake air guiding device of the present invention.
  • the shape of the guide vane 8 is inclined with respect to the axis of the intake duct, and it extends to the intake valve to enhance the swirling effect of the intake flow.
  • FIG. 5 reflects that most of the air flowing through the intake passage 10 must be guided by the guide vanes 8.
  • Fig. 6 is a plan view of a second embodiment of the present invention, and three separate guide vanes 8 are provided in the figure.
  • FIG. 7 is a plan view of a third embodiment of the air intake guide device of the present invention.
  • the shape of this embodiment is designed to have a circular seat 12 with a peripheral wall.
  • a circular air passage is formed in the circular seat 12, and the guide vanes 8 It is integrated with the circular seat 12 as long as the circular seat 12 is designed to match the inlet of the gas inlet of the internal combustion engine gas rainbow head.
  • the air intake deflector provided in this embodiment can be press-fitted at the inlet of the cylinder head, and then the engine intake pipe is assembled, which can reduce the collision in the process flow and save the total assembly time.
  • the flow guiding device may also have a non-circular seat, and the guide vanes are connected to the non-circular seat.
  • the non-circular seat When assembling, the non-circular seat can be pressed into the cylinder head intake duct, intake duct air duct and air that cooperate with the outer shape. Filter outlet.
  • the device can also be press-fitted at the end of the intake pipe, or the guide vanes 8 can be reversely extended into the intake pipe 6.
  • the guide vanes 8 protruding into the rainbow-head air passage 10 are easy to be damaged during the transportation.
  • the door can avoid scratches or pilling during transportation, and can save production materials.
  • FIG. 8 is a cross-sectional view taken along the line C-C in FIG. 7, showing that the circular seat 12 and the guide vane 8 are connected together.
  • the upper surface of the cylinder head is 36.
  • a guide hole 37 for the intake valve stem and a guide hole for the exhaust valve stem (not shown) are opened in the upper part of the gas head.
  • the intake valve seat hole is 47, and the exhaust valve seat hole is not shown.
  • An air intake manifold (not shown) is connected to the gas rainbow head through an air inlet flange 39.
  • the exhaust manifold is connected to the cylinder head through a flange (not shown).
  • the intake port in the gas rainbow head is 10, and the exhaust port is not shown in the figure.
  • the flange 81 of the cylinder head intake duct deflector 8 is installed between the flange (not shown) of the intake manifold and the cylinder head intake port flange 39 to fix the deflector 8
  • the blade portion 82 of the deflector is adjacent to the right side surface 12 of the air inlet 10.
  • the shape of the blade portion 82 of the deflector 8 is made streamlined, which reduces the resistance of the intake air and increases the vortex of the intake air. See Figures 13, 14, 15 and 16 for detailed views of the deflector 8.
  • the deflector 8 is divided into a deflector flange 81, a deflector blade 82 and a blade head 83, an upper surface 84 of the deflector, a lower surface 85 of the deflector, and Left side 86, right side 87 of the deflector.
  • the inner surface of the cylinder head intake duct 10 is divided into a left side 11, a right side 12, an upper surface 13, and a lower surface 14.
  • the shape of the inlet of the cylinder head inlet 10 is generally round or rectangular.
  • the shape of the deflector blade 82 is connected to the flange 81 on the one hand, and its lower surface 85 is to be close to the right side 12 of the air intake duct. Therefore, at the connection between the blade and the flange 81, a smooth transition is required. .
  • an intake air guide device of an internal combustion engine is provided with first-class linear guide vanes, and is fixed to an intake flange of a cylinder head through a flange. On the interface, the guide vane is close to one side surface of the air intake passage.
  • the vane 8 of the deflector of the present invention has a vane head 83 partially extending into the cylinder head vortex chamber 42 to prevent airflow from entering the vortex chamber in advance and directing the airflow to the tangential direction of the cylinder head vortex chamber 42.
  • the guide vane 82 is preferably biased toward the bottom surface 14 of the intake passage 10 and the width of the blade head 83 is narrowed (in the preferred embodiment, the method is implemented by using a chamfered angle) to increase the circulation. Area, reducing flow resistance and enhancing eddy current strength.
  • the tip portion of the blade head 83 is slightly curved toward the lower surface 85 of the blade, and the effect is even better.
  • the cylinder bore is 110mm
  • the length of the deflector blade head 83 projecting into the vortex chamber is 7mm
  • the width of the blade is 20mm
  • the gap is less than 2mm
  • the experimental test results the power of the engine is unchanged
  • the fuel consumption of the engine has been reduced by 10g / KWh.
  • the fuel consumption is reduced to 5 to 25 g / KWh with the same engine power, which indicates the economic value of the present invention.
  • the air intake guide device of the present invention can be made of sheet metal by punching or made of synthetic material, and the original curved surface and the overall geometry can be set as required.
  • the vortex effect of the overall gas flow can be generated, which has a stronger effect than controlling the air flow only by the wall of the air intake duct.
  • the invention can improve the economy, the solution is clean, and it can be easily manufactured by applying the existing process technology.
  • the present invention can be conveniently and economically applied to a gasoline engine, a diesel engine, or an internal combustion engine using other fuels, whether a multi-cylinder engine or a single-cylinder engine, or a vertical or horizontal engine. The investment is small, but the effect of saving fuel and reducing emissions and pollution is huge.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)

Abstract

This invention relates to an inlet guiding device provided at the connection of an inlet pipe and cylinder cover for an internal combustion engine. Said device comprises inclined guiding blades projecting into the intake port in a cylinder cover to form a swirl in a cylinder. In a preferred embodiment, said guiding device is provided with a streamlined guiding blade fixed at the intake port in the cylinder cover by a flange. Said guiding blade is provided with a head part partially projecting into the swirl chamber in the cylinder cover near the side surface of the intake port, to prevent stream flowing into the swirl chamber in advance. It is preferred that the guiding blade is inclined toward the bottom of the intake port, and the width of the head of the blade is smaller. It is also preferred that the tip of the head of the blade is some of bent toward the back of the blade.

Description

一种内燃机进气导流装置及装有这种导流装置的内燃机 技术领域  Technical field of intake guide of internal combustion engine and internal combustion engine equipped with such guide
本发明涉及一种内燃机进气导流装置， 具体地说， 涉及一种 装入内燃机气缸头进气道内的进气导流装置。  The present invention relates to an intake air guide device of an internal combustion engine, and more particularly, to an intake air guide device installed in an intake port of a cylinder head of an internal combustion engine.
背景技术 Background technique
为了降低发动机油耗， 改进燃烧， 降低排放污染， 现有技术 对发动机进气道作了各种改进， 使得进入发动机的燃油与空气充 分混合， 达到尽量节能并环保的效果。 上述努力集中在对进气道 形状的改进上， 能使气体随气道形状产生涡流， 改进燃烧。 现有 涡流式内燃机燃烧室技术是以上努力的结果。  In order to reduce engine fuel consumption, improve combustion, and reduce emissions and pollution, the prior art has made various improvements to the engine's intake port so that the fuel entering the engine is fully mixed with air to achieve the most energy-saving and environmentally friendly effects. The above efforts are focused on the improvement of the shape of the air inlet, which can make the gas vortex with the shape of the air channel, and improve the combustion. Existing swirl combustion engine combustion chamber technology is the result of these efforts.
但在内燃机采取直喷式燃烧方式时， 进入燃烧的空气不能形 成强大的涡流， 影响了燃油的充分燃烧， 使得油耗增大， 排放污 染也加剧， 需要有更好的技术方案改善进气***， 从而获得较佳 的燃烧效果， 达到节油和降低污染的效果。 现在公开的技术改进 方案， 主要对进气道的形状及大小作优化设计， 以加大进气气流 在通过进气道时形成高速旋转涡流作用， 改进燃烧。  However, when the internal combustion engine adopts a direct-injection combustion method, the air entering the combustion cannot form a strong vortex, which affects the full combustion of the fuel, increases the fuel consumption, and exacerbates the emission pollution. A better technical solution is needed to improve the air intake system. Thus, a better combustion effect is obtained, and the effects of saving fuel and reducing pollution are achieved. The technical improvement scheme disclosed now mainly optimizes the shape and size of the intake port to increase the intake air flow to form a high-speed swirling vortex when passing through the intake port, and improve combustion.
现有柴油机气缸头进气道的设计， 已经考虑了气流进入气虹 时， 产生旋涡， 但效果不明显。 因此， 产生了一系列发明专利， 用以增强气流进入气缸时的旋涡。 这些发明有的效果不明显， 有 的结构太复杂， 不便于应用。 例如：  The design of the inlet of the existing diesel engine cylinder head has taken into account that when the airflow enters the gas rainbow, vortices are generated, but the effect is not obvious. As a result, a series of invention patents were created to enhance the swirl of airflow as it enters the cylinder. Some of these inventions have insignificant effects, and some are too complicated to be applied. E.g:
US 4274386美国专利公开了一种透平板式汽化器， 它包括一 夹持并固定在化油器和进气歧管之间的一薄板， 薄板具有与化油 器出口和进气歧管进口一致的开口， 并成形有沿反时针方向设置 的多个三角形导流叶片， 以有助于引导燃油空气混合物沿该方向 转动， 首先撞击三角形导叶的长侧边， 该长侧边先***一微小的 突肩， 然后向位于三角形顶点处的开口中心向下倾斜， 该突肩有 助于粉碎旋转的混合物， 旋转的混合物继而向导叶的顶点弯曲， 同时导叶的另一侧边也沿同一方向， 向导叶的顶点弯曲， 形成杯 形或漏斗形， 引导燃油空气混合物中尚未汽化的液体部分， 使其 被吸入向位于多个导叶的顶点处的开口中心流动的空气流时被进 一步雾化和汽化， 以进一步帮助吸入空气， 使混合物在该顶点处 进一步汽化， 从而提高燃烧效率， 减少污染。 该透平板式汽化器， 只适用于汽油机。 US Pat. No. 4,274,386 discloses a through-plate type carburetor, which includes a thin plate clamped and fixed between the carburetor and the intake manifold. The thin plate has a thickness consistent with the carburetor outlet and the intake manifold inlet. Opening, and formed with a plurality of triangular guide vanes arranged in a counterclockwise direction to help guide the fuel-air mixture to rotate in that direction, first hitting the long sides of the triangular guide vanes, which first bulge a tiny Shoulder, then tilt down towards the center of the opening at the apex of the triangle, the shoulder has It helps to smash the rotating mixture. The rotating mixture then bends the apex of the guide vane. At the same time, the other side of the guide vane is also in the same direction. The apex of the guide vane bends to form a cup or funnel shape to guide the fuel-air mixture that has not vaporized The liquid part is further atomized and vaporized when being sucked into the air flow flowing toward the center of the opening at the apex of the plurality of guide vanes to further help inhale the air and further vaporize the mixture at the apex to improve combustion Efficiency and reduce pollution. The transparent flat-plate carburetor is only suitable for gasoline engines.
US 4432312 美国专利公开了一种具有可变涡流导叶的内燃 机进气口， 在邻近进气阀头部的进气口的端部， 设置多个可转动 的导叶， 从而在改变发动机节气门或负荷情况下， 有效地使施加 给气缸进气充量的涡流强度相应变化， 以有效地满足节气门部分 开启时所需的涡流和节气门全开或满负荷时所需的相对自由的流 动奈件。 然而， 要在内燃机的气缸头上邻近每一进气阀头部的进 气口端部安装这些可转动的导叶， 需要对气缸头作较大的改造， 甚至会削弱气缸头的强度。  US 4432312 The US patent discloses an intake port of an internal combustion engine with a variable vortex guide vane. A plurality of rotatable guide vanes is provided at the end of the intake port adjacent to the head of the intake valve, thereby changing the engine throttle. Under load or load conditions, the vortex intensity of the intake air charge applied to the cylinder is changed accordingly to effectively meet the vortex required when the throttle is partially opened and the relatively free flow required when the throttle is fully opened or fully loaded Nai pieces. However, to install these rotatable guide vanes on the cylinder head of the internal combustion engine adjacent to the inlet end of each intake valve head requires a major modification to the cylinder head, which may even weaken the strength of the cylinder head.
WO 96/35045国际专利申请， 公开了一种分层进气发动机， 提供了一种内燃机的进气***， 其进气口被一扭曲的隔板分隔成 两个螺旋通道， 该隔板靠近进气阀的一端所在的平面通常与进气 阀阀杆垂直， 而位于进气口另一端的该隔板所在的平面通常与进 气阀阀杆平行。 从而可以将燃油喷射器设置在进气阀附近， 保证 燃油喷雾不会被垂直设置的隔板阻挡， 并且燃油喷雾可以对准进 气阀阀头， 不会使隔板和燃烧室顶部产生 "湿壁现象" 。 然而在 弯曲的进气口内固定所说的扭曲隔板， 工艺上比较困难， 而且气 流沿扭曲隔板流动的路径较长， 存在较大的阻力和摩擦损失。  The international patent application WO 96/35045 discloses a stratified intake engine, and provides an intake system of an internal combustion engine. The intake port is divided into two spiral channels by a twisted partition, and the partition is close to the inlet. The plane on which one end of the air valve is located is usually perpendicular to the intake valve stem, and the plane on the other end of the air inlet is generally parallel to the intake valve stem. Therefore, the fuel injector can be arranged near the intake valve to ensure that the fuel spray is not blocked by the vertical partition, and the fuel spray can be aligned with the valve head of the intake valve, which will not cause the partition and the top of the combustion chamber to be "wet." Wall phenomenon ". However, it is technically difficult to fix the twisted baffle plate in the curved air inlet, and the flow path of the gas flow along the twisted baffle plate is long, and there is a large resistance and friction loss.
CN 2105560U中国实用新型专利申请说明书， 公开了一种用 于内燃机的空气涡流装置， 包括一壳体和从该壳体沿径向延伸的 一组导叶， 用以使进气产生涡流。 为防止叶片背面负压区出现脱 流， 导叶上开有狭长切口。 该空气涡流装置安装在空气滤清器中 心和排气歧管入口处。 由于从空气滤清器吸入的空气需要流经化 油器和进气歧管， 才能到达内燃机燃烧室， 设置的空气涡流装置 难以在燃烧室内产生强的旋流。 CN 2105560U Chinese utility model patent application specification discloses an air vortex device for an internal combustion engine, which includes a casing and a set of guide vanes extending in a radial direction from the casing, so as to generate vortex of the intake air. To prevent detachment in the negative pressure area on the back of the blade Flow, the guide vanes have slits. The air vortex device is installed at the center of the air cleaner and at the exhaust manifold inlet. Since the air sucked from the air cleaner needs to flow through the carburetor and the intake manifold to reach the combustion chamber of the internal combustion engine, it is difficult for the provided air swirl device to generate a strong swirl in the combustion chamber.
此外， CN 2334879Y中国实用新型专利说明书， 公开了一种 引擎涡轮助燃器， 安装于汽车引擎的空气滤清器和化油器之间， 即空气滤清器的排气管内， 用以增加吸入空气的流速。 该涡轮助 燃器由一圆筒形外壳和沿周向等间 巨设置在外壳内的若干导叶构 成， 借助导叶端部成形出的舌片和外壳壁上成形出的舌孔将导叶 固定在圆筒形外壳内。 由于空气仍需通过较长的通道才能到达燃 烧室， 该涡轮助燃器仍难以在燃烧室内产生强的旋流。 而且该涡 轮助燃器的各导叶与圆筒形外壳的连接， 须经过单独的装配工序 才能完成， 不适应大规模生产的需求。  In addition, CN 2334879Y Chinese Utility Model Patent Specification discloses an engine turbine combustor installed between an air filter and a carburetor of an automobile engine, that is, an exhaust pipe of the air filter for increasing intake air. The flow rate. The turbine combustor is composed of a cylindrical shell and a plurality of guide vanes arranged in the shell at equal intervals in the circumferential direction. The guide vanes are fixed by means of a tongue formed at the end of the guide vane and a tongue hole formed on the shell wall Inside a cylindrical shell. Since the air still needs to pass through a long passage to reach the combustion chamber, it is still difficult for the turbine burner to generate a strong swirl in the combustion chamber. In addition, the connection between each guide vane of the turbo-fuel burner and the cylindrical shell can only be completed through a separate assembly process, which does not meet the needs of mass production.
鉴于上述原因， 设计一种结构筒单， 无活动部件的， 不影响 发动机容积效率的， 又能使空气在进入气缸时产生旋涡的一种装 置， 是十分有意义的。  In view of the above reasons, it is very meaningful to design a device that has a single structure, no moving parts, does not affect the volumetric efficiency of the engine, and can cause air to swirl when it enters the cylinder.
发明内容 Summary of the Invention
本发明旨在克服上述现有技术之不足， 提供一种结构筒单， 无活动部件的， 不影响发动机容积效率的， 又能使空气在进入气 缸时产生旋涡的一种内燃机进气导流装置， 该进气导流装置接近 内燃机气缸进气阀， 既能增强进入内燃机燃烧室的空气的旋转涡 流强度， 使燃油和空气充分地混合， 又勿需对内燃机气缸头进行 大的改造。  The present invention aims at overcoming the shortcomings of the prior art, and provides an intake guide device for an internal combustion engine, which has a simple structure, no moving parts, does not affect the volumetric efficiency of the engine, and can cause air to vortex when entering the cylinder. The intake guide device is close to the intake valve of the internal combustion engine cylinder, which can not only enhance the intensity of the swirling vortex of the air entering the combustion chamber of the internal combustion engine, and make the fuel and air fully mixed, but also do not need to modify the cylinder head of the internal combustion engine.
按照本发明提供的内燃机进气导流装置， 其上设有倾斜的导 流叶片， 使流经导流叶片的气体产生旋流， 该导流装置安装在内 燃机气缸头与进气管的连接处， 所述导流叶片伸入内燃机气缸头 的进气通道。 按照本发明的一种优选实施例， 所提供的内燃机进气导流装 置具有一流线型导流叶片， 通过一法兰固定在气缸头的进气法兰 接口上， 所述导流叶片靠近进气通道的一侧表面， 并具有部分伸 入气缸头旋涡室的叶片头部， 阻止气流提前进入旋涡室。 所述导 流叶片最好偏向进气通道的底面， 并使叶片头部的宽度变窄， 以 增大流通面积， 減小流动阻力， 增强涡流强度。 叶片头部的叶尖 部分最好略微向叶片背面弯曲。 According to the present invention, the intake air guide device of the internal combustion engine is provided with inclined guide vanes to generate a swirling flow of the gas flowing through the guide vanes. The guide device is installed at the connection between the cylinder head and the intake pipe of the internal combustion engine. The guide vanes extend into an intake passage of a cylinder head of an internal combustion engine. According to a preferred embodiment of the present invention, the internal combustion engine air intake guide device provided has a first-class linear guide vane, which is fixed to an intake flange interface of a cylinder head through a flange, and the guide vane is close to the intake air. One side surface of the channel has a blade head partially extending into the vortex chamber of the cylinder head, preventing airflow from entering the vortex chamber in advance. The guide vane is preferably biased toward the bottom surface of the intake passage, and the width of the blade head is narrowed to increase the flow area, reduce the flow resistance, and enhance the vortex intensity. The tip portion of the blade head is preferably slightly curved toward the back of the blade.
与现有技术相比， 由于本发明的带有导流叶片的进气导流装 置， 安装在内燃机气缸头与进气管的连接处， 且导流叶片伸入内 燃机气缸头的进气通道， 使导流叶片接近内燃机气缸进气阀， 阻 止气流提前进入旋涡室， 既能有效地增强进入内燃机燃烧室的空 气的旋转涡流强度， 使燃油和空气充分地混合， 提高燃烧效率， 达到节油和净化尾气减少污染的目的， 又勿需对内燃机气缸头进 行大的改造， 因而能够应用于现有内燃机上。  Compared with the prior art, since the intake air guide device with guide vanes of the present invention is installed at the connection between the cylinder head and the intake pipe of the internal combustion engine, and the guide vanes extend into the intake passage of the internal combustion engine cylinder head, so that The guide vane is close to the intake valve of the internal combustion engine cylinder, preventing the airflow from entering the vortex chamber in advance, which can effectively enhance the swirling vortex intensity of the air entering the combustion chamber of the internal combustion engine, fully mix the fuel and air, improve combustion efficiency, and achieve fuel saving and purification The purpose of the exhaust gas to reduce pollution, without the need to make major modifications to the cylinder head of the internal combustion engine, can be applied to the existing internal combustion engine.
该进气导流装置没有任何活动部件， 只需借助一个固定在气 缸头进气法兰和进气联管法兰之间的进气道导流片， 就能阻止气 流提前进入旋涡室， 延长气流前进的距离使其切向进入旋涡室， 产生旋涡后再进入气虹。 这样， 加长了气流切向行进的距离， 加 大了气流切向行进的流量， 增强了进入气紅的旋涡； 同时， 改善 了气流的流动的状况， 减少了流动阻力。 改善了柴油发动机燃烧 室内的燃烧过程， 減少了柴油发动机的油耗。  The air intake deflector does not have any moving parts. Only an air duct deflector fixed between the cylinder head intake flange and the intake manifold flange can be used to prevent the airflow from entering the vortex chamber in advance. The distance that the airflow advances makes it enter the vortex chamber tangentially, and then enter the air rainbow after the vortex is generated. In this way, the distance of the tangential travel of the airflow is increased, the flow of the tangential travel of the airflow is increased, and the vortex entering the gas red is enhanced; meanwhile, the condition of the airflow is improved, and the flow resistance is reduced. The combustion process in the combustion chamber of the diesel engine is improved, and the fuel consumption of the diesel engine is reduced.
附图说明 BRIEF DESCRIPTION OF THE DRAWINGS
图 1为本发明内燃机进气导流装置第一实施例的装配示意图； 图 2为沿图 1中 A - A剖面的剖视图；  FIG. 1 is an assembly schematic diagram of a first embodiment of an air intake guide device of an internal combustion engine of the present invention; FIG. 2 is a cross-sectional view taken along the A-A section in FIG. 1;
图 3为本发明内燃机进气导流装置笫一实施例的剖视图； 图 4为沿图 3中 B - B剖面的剖视图；  3 is a cross-sectional view of a first embodiment of an air intake guide device of an internal combustion engine of the present invention; FIG. 4 is a cross-sectional view taken along the B-B cross-section in FIG. 3;
图 5为本发明内燃机进气导流装置笫一实施例的俯视图； 图 6为本发明内燃机进气导流装置笫二实施例的俯视图； 图 7为本发明内燃机进气导流装置第三实施例的俯视图； 图 8为沿图 7中 C - C剖面的剖视图； FIG. 5 is a top view of an embodiment of an air intake guide device of an internal combustion engine according to the present invention; FIG. FIG. 6 is a plan view of a second embodiment of an air intake guide device for an internal combustion engine of the present invention; FIG. 7 is a plan view of a third embodiment of an air intake guide device for an internal combustion engine of the present invention; FIG. 8 is a cross-sectional view taken along the line C-C in FIG. 7;
图 9 为本发明内燃机进气导流装置笫三实施例的装配剖面 图；  FIG. 9 is an assembly cross-sectional view of a third embodiment of an intake air guide device of an internal combustion engine of the present invention; FIG.
图 10 为安装在单缸柴油机气虹头中的本发明进气导流装置 的一种优选实施例的顶视剖面图；  FIG. 10 is a top cross-sectional view of a preferred embodiment of the air intake diversion device of the present invention installed in a single-cylinder diesel gas rainbow head;
图 11为图 10的 A向视图；  FIG. 11 is an arrow A view of FIG. 10;
图 12为沿图 10中 B— B剖面的剖面图；  FIG. 12 is a sectional view taken along the B-B section in FIG. 10;
图 13为图 10所示实施例的俯视图；  13 is a top view of the embodiment shown in FIG. 10;
图 14为图 10所示实施例的正视图；  14 is a front view of the embodiment shown in FIG. 10;
图 15为图 14所示实施例的侧视图；  15 is a side view of the embodiment shown in FIG. 14;
图 16为图 10所示实施例的透视图。  FIG. 16 is a perspective view of the embodiment shown in FIG.
具体实施方式 detailed description
下面结合附图给出的实施例， 详细说明本发明。  The present invention will be described in detail below with reference to the embodiments given in the drawings.
说明书和附图中相同或相似的部件用同一标号表示。  The same or similar parts in the description and the drawings are denoted by the same reference numerals.
图 1和图 2为本发明的内燃机进气导流装置第一实施例的装 配示意图。 其中， 本发明进气导流装置装在进气管 5和气虹头 4 的结合面上， 一个导流叶片 8与夹持在进气管 5和气鉦头 4之间 的法兰 81成形为一体， 用连接进气管 5与气鉦头 4的螺栓（图中 未示出） 固定， 进气导流装置的导流叶片 8伸入气缸头 4的进气 通道 10内。在进气阀开启后， 空气流经进气管道 6和气缸头进气 通道 10时， 必然被导流叶片 8引导产生涡流。 由于导流叶片 8能 够伸入靠近进气门的位置， 进入燃烧室的进气仍保持强大的旋转 涡流， 与燃料发生充分混合燃烧。 导流叶片 8为一曲面， 其倾斜 一定角度， 使气流产生旋转。 可以通过实验， 选择导流叶片 8的 最佳倾斜角度、 几何形状和制作材料， 来实现最佳的节油减污效 果。 本实施例将导流叶片 8与衬垫 1制成一体， 以降低成本和便 于装配， 适于用模具大批量生产， 可方便地应用到现有内燃机上。 FIG. 1 and FIG. 2 are assembly schematic diagrams of a first embodiment of an intake guide device of an internal combustion engine of the present invention. Wherein, the air intake guide device of the present invention is installed on the joint surface of the air intake pipe 5 and the gas rainbow head 4, and a guide vane 8 and a flange 81 sandwiched between the air intake pipe 5 and the air bow 4 are formed as a whole. The bolts (not shown) connecting the intake pipe 5 and the gas head 4 are fixed, and the guide vanes 8 of the air intake guide device protrude into the intake passage 10 of the cylinder head 4. After the intake valve is opened, when the air flows through the intake duct 6 and the cylinder head intake passage 10, it is necessarily guided by the guide vanes 8 to generate a vortex. Since the guide vanes 8 can reach the position close to the intake valve, the intake air entering the combustion chamber still maintains a strong swirling vortex, and fully mixed with the fuel for combustion. The guide vane 8 is a curved surface, which is inclined at a certain angle to cause the airflow to rotate. The best inclination angle, geometry and material of the guide vane 8 can be selected through experiments to achieve the best fuel-saving and pollution-reducing effect. fruit. In this embodiment, the guide vane 8 and the gasket 1 are made into one body to reduce cost and facilitate assembly, and is suitable for mass production with a mold, and can be conveniently applied to an existing internal combustion engine.
图 3、 4和 5示出本发明的进气导流装置的第一实施例。如图 所示， 导流叶片 8的形状相对进气道轴线是倾斜的， 其延伸到接 近进气阀， 以增强进气流的涡流旋转效果。 图 5反映出大部分流 经进气通道 10的空气必然被导流叶片 8所引导。  Figures 3, 4 and 5 show a first embodiment of the intake air guiding device of the present invention. As shown in the figure, the shape of the guide vane 8 is inclined with respect to the axis of the intake duct, and it extends to the intake valve to enhance the swirling effect of the intake flow. FIG. 5 reflects that most of the air flowing through the intake passage 10 must be guided by the guide vanes 8.
图 6为本发明的笫二实施例的俯视图， 图中设有 3个分离的 导流叶片 8。  Fig. 6 is a plan view of a second embodiment of the present invention, and three separate guide vanes 8 are provided in the figure.
图 7为本发明的进气导流装置的第三实施例的俯视图， 该实 施例的外形设计成具有带一周壁的圆形座 12， 圆形座 12 内形成 一气流通道，导流叶片 8与圆形座 12连成一体， 只要把该圆形座 12设计成与内燃机气虹头进气道进口相匹配的尺寸。 本实施例给 出的进气导流装置， 可以先压装在缸头进气道口处， 再进行发动 机进气管的装配作业， 能减少工艺流程中的碰撞， 节约总装时间。 所述导流装置也可以有一非圆形座， 导流叶片连接于非圆形座， 装配时可将非圆形座压入与之外形配合的气缸头进气道、 进气管 气道和空气滤清器出气口内。 也可以将本装置压装在进气管端， 或将导流叶片 8反装伸入进气管 6内。伸入虹头气道 10的导流叶 片 8易在搬运流转中碰坏， 较佳方案是将本装置压装入内燃机气 缸头进气道 10内，使导流叶片 8最大限度地接近进气门， 能避免 搬运碰伤或轧毛现象发生， 能节省制作材料。  FIG. 7 is a plan view of a third embodiment of the air intake guide device of the present invention. The shape of this embodiment is designed to have a circular seat 12 with a peripheral wall. A circular air passage is formed in the circular seat 12, and the guide vanes 8 It is integrated with the circular seat 12 as long as the circular seat 12 is designed to match the inlet of the gas inlet of the internal combustion engine gas rainbow head. The air intake deflector provided in this embodiment can be press-fitted at the inlet of the cylinder head, and then the engine intake pipe is assembled, which can reduce the collision in the process flow and save the total assembly time. The flow guiding device may also have a non-circular seat, and the guide vanes are connected to the non-circular seat. When assembling, the non-circular seat can be pressed into the cylinder head intake duct, intake duct air duct and air that cooperate with the outer shape. Filter outlet. The device can also be press-fitted at the end of the intake pipe, or the guide vanes 8 can be reversely extended into the intake pipe 6. The guide vanes 8 protruding into the rainbow-head air passage 10 are easy to be damaged during the transportation. The door can avoid scratches or pilling during transportation, and can save production materials.
图 8为沿图 7中 C - C剖面的剖面图，显示圆形座 12和导流 叶片 8连成一体。  FIG. 8 is a cross-sectional view taken along the line C-C in FIG. 7, showing that the circular seat 12 and the guide vane 8 are connected together.
图 9为本发明的进气导流装置的笫三实施例的装配图。 如图 中清楚示出的，气缸头的进气通道 10邻近进气口处具有一扩孔部 分， 用以容纳所述圆形座 12。 如图中双点划线所示， 最好用进气 管 5的底面压住圆形座 12。 参见图 10 - 16， 其中示出安装在单缸柴^机气缸头中的按照 本发明的进气导流装置的一种优选实施例。 发动机的气缸（图中 未画出）， 位于气缸头 3的下部， 与气虹头的下表面 31相接， 气 缸头的侧表面分别为 32, 33, 34。 气缸头的上表面为 36。 气鉦头 上部开有进气阀杆的导向孔 37 和排气阀杆的导向孔 （图中未画 出） 。 进气阀阀座孔为 47， 排气阀阀座孔图中未画出。 进气联管 (图中未画出）通过进气口法兰 39与气虹头相连接。排气联管通 过法兰与气缸头相连接（图中未画出）。 气虹头中的进气道为 10， 排气道图中未画出。 柴油杯气缸头进气道导流片 8的法兰 81, 安 装在进气联管的法兰（图中未画出）和气缸头进气口法兰 39之间， 将导流片 8固定在气虹头进气道 10中， 导流片的叶片部分 82与 进气道 10的右侧表面 12相邻。 在进气行程时， 空气经过进气联 管、 进气道 10、 进入气虹头中进气阀 （图中未画出）上部的旋涡 室 42中， 使气流产生旋涡， 通过进气阀向下进入气缸中。 FIG. 9 is an assembly diagram of a third embodiment of the air intake guide device of the present invention. As clearly shown in the figure, the intake passage 10 of the cylinder head is provided with a reaming portion adjacent to the intake port to receive the circular seat 12. As shown by the two-dot chain line in the figure, it is preferable to press the circular seat 12 with the bottom surface of the intake pipe 5. 10-16, there is shown a preferred embodiment of the air intake guide device according to the present invention installed in the cylinder head of a single-cylinder diesel engine. The cylinder (not shown) of the engine is located at the lower part of the cylinder head 3 and is connected to the lower surface 31 of the gas rainbow head. The side surfaces of the cylinder head are 32, 33, and 34, respectively. The upper surface of the cylinder head is 36. A guide hole 37 for the intake valve stem and a guide hole for the exhaust valve stem (not shown) are opened in the upper part of the gas head. The intake valve seat hole is 47, and the exhaust valve seat hole is not shown. An air intake manifold (not shown) is connected to the gas rainbow head through an air inlet flange 39. The exhaust manifold is connected to the cylinder head through a flange (not shown). The intake port in the gas rainbow head is 10, and the exhaust port is not shown in the figure. The flange 81 of the cylinder head intake duct deflector 8 is installed between the flange (not shown) of the intake manifold and the cylinder head intake port flange 39 to fix the deflector 8 In the gas rainbow head air inlet 10, the blade portion 82 of the deflector is adjacent to the right side surface 12 of the air inlet 10. During the intake stroke, the air passes through the intake manifold, the inlet port 10, and enters the vortex chamber 42 in the upper part of the intake valve (not shown) in the gas rainbow head, so that the airflow generates a vortex. Into the cylinder.
根据本发明的研究，导流片 8的叶片部分 82的形状做成流线 型， 減少了进气的阻力， 并增加了进气的旋涡。 导流片 8的详图 参见图 13、 图 14、 图 15和图 16。  According to the study of the present invention, the shape of the blade portion 82 of the deflector 8 is made streamlined, which reduces the resistance of the intake air and increases the vortex of the intake air. See Figures 13, 14, 15 and 16 for detailed views of the deflector 8.
为了说明的方便， 将导流片 8分为导流片法兰 81， 导流片叶 片 82和叶片头部 83， 导流片的上表面 84， 导流片的下表面 85， 导流片的左侧面 86， 导流片的右侧面 87。 将气缸头进气道 10的 内表面分为左侧面 11， 右侧面 12， 上表面 13， 下表面 14。 气缸 头进气道 10进口的形状一般采用圆形或长方形。 导流片叶片 82 的形状， 由于它一方面与法兰 81相连接， 而其下表面 85又要与 进气道的右侧面 12挨近， 所以在叶片与法兰 81连接处， 需要光 滑过渡。  For convenience of explanation, the deflector 8 is divided into a deflector flange 81, a deflector blade 82 and a blade head 83, an upper surface 84 of the deflector, a lower surface 85 of the deflector, and Left side 86, right side 87 of the deflector. The inner surface of the cylinder head intake duct 10 is divided into a left side 11, a right side 12, an upper surface 13, and a lower surface 14. The shape of the inlet of the cylinder head inlet 10 is generally round or rectangular. The shape of the deflector blade 82 is connected to the flange 81 on the one hand, and its lower surface 85 is to be close to the right side 12 of the air intake duct. Therefore, at the connection between the blade and the flange 81, a smooth transition is required. .
按照本发明的一种优选实施例， 所提供的内燃机进气导流装 置具有一流线型导流叶片， 通过一法兰固定在气缸头的进气法兰 接口上， 所述导流叶片靠近进气通道的一侧表面。 According to a preferred embodiment of the present invention, an intake air guide device of an internal combustion engine is provided with first-class linear guide vanes, and is fixed to an intake flange of a cylinder head through a flange. On the interface, the guide vane is close to one side surface of the air intake passage.
如图 10所示， 本发明导流片的叶片 8, 具有部分伸入气缸头 旋涡室 42的叶片头部 83， 以阻止气流提前进入旋涡室， 并将气流 导向气缸头旋涡室 42的切线方向。 如图 11所示， 导流叶片 82最 好偏向进气通道 10的底面 14, 并使叶片头部 83的宽度变窄 （该 优选实施例中采用斜切角的方法实现）， 以增大流通面积， 减小流 动阻力， 增强涡流强度。 所述叶片头部 83的叶尖部分最好略微向 叶片下表面 85弯曲， 则效果更佳。 由于导流片的叶片 8的存在， 加长了气流切向行进的距离，加大了气流切向行进的流量，增加了 进入气缸的旋涡； 同时， 改善了流动的状况， 减少了流动阻力。 改 善了柴油发动机燃烧室内的燃烧过程， 減少了柴油发动机的油耗。  As shown in FIG. 10, the vane 8 of the deflector of the present invention has a vane head 83 partially extending into the cylinder head vortex chamber 42 to prevent airflow from entering the vortex chamber in advance and directing the airflow to the tangential direction of the cylinder head vortex chamber 42. . As shown in FIG. 11, the guide vane 82 is preferably biased toward the bottom surface 14 of the intake passage 10 and the width of the blade head 83 is narrowed (in the preferred embodiment, the method is implemented by using a chamfered angle) to increase the circulation. Area, reducing flow resistance and enhancing eddy current strength. Preferably, the tip portion of the blade head 83 is slightly curved toward the lower surface 85 of the blade, and the effect is even better. Due to the existence of the vane 8 of the deflector, the distance of the tangential travel of the airflow is lengthened, the flow of the tangential travel of the airflow is increased, and the vortex entering the cylinder is increased; meanwhile, the flow condition is improved and the flow resistance is reduced. The combustion process in the combustion chamber of the diesel engine was improved, and the fuel consumption of the diesel engine was reduced.
对于附图中的例子，气缸缸径为 110mm,导流片叶片头部 83 伸入旋涡室的长度为 7mm，叶片的宽度为 20mm， 导流片叶片 82 的下表面 85与进气道右侧面 12， 紧密相接， 间隙小于 2mm， 实 验测试结果，发动机的功率不变，发动机的油耗降低了 10g/KWh。 对于不同机型的发动机， 在发动机功率不变的情况下， 油耗降低 为 5〜25g/KWh， 表明了本发明的经济价值。  For the example in the drawing, the cylinder bore is 110mm, the length of the deflector blade head 83 projecting into the vortex chamber is 7mm, the width of the blade is 20mm, the lower surface 85 of the deflector blade 82 and the right side of the intake duct 12, close contact, the gap is less than 2mm, the experimental test results, the power of the engine is unchanged, the fuel consumption of the engine has been reduced by 10g / KWh. For engines of different models, the fuel consumption is reduced to 5 to 25 g / KWh with the same engine power, which indicates the economic value of the present invention.
本发明的进气导向装置可用金属板材沖压制作， 或用合成材 料制作， 原始曲面及整体几何形状可以根据需要进行设定。 本发 明通过增加一个筒单的导流装置的方式使整体气体流发生涡流作 用， 比仅用进气道壁来控制气流能产生更强烈的作用。 本发明能 提高经济性， 方案筒洁， 并且完全可以应用现有工艺技术方便地 制造。 汽油机、 柴油机或使用其它燃料的内燃机， 不管多缸机还 是单缸机， 也不论立式还是卧式，都能很方便经济地应用本发明。 投 A f艮少， 而带来的节油和减少排放污染的效果却是巨大的。  The air intake guide device of the present invention can be made of sheet metal by punching or made of synthetic material, and the original curved surface and the overall geometry can be set as required. In the present invention, by adding a single deflector device, the vortex effect of the overall gas flow can be generated, which has a stronger effect than controlling the air flow only by the wall of the air intake duct. The invention can improve the economy, the solution is clean, and it can be easily manufactured by applying the existing process technology. The present invention can be conveniently and economically applied to a gasoline engine, a diesel engine, or an internal combustion engine using other fuels, whether a multi-cylinder engine or a single-cylinder engine, or a vertical or horizontal engine. The investment is small, but the effect of saving fuel and reducing emissions and pollution is huge.
本发明还可有许多变型， 但都在本发明的权利要求保护范围 之中。  The present invention may have many variations, but all fall within the protection scope of the claims of the present invention.

Claims

权 利 要 求 Rights request
1. 一种内燃机进气导流装置， 其上设有倾斜的导流叶片， 使 流经导流叶片的气体产生旋流， 其特征在于： 该导流装置安装在 内燃机气缸头与进气管的连接处， 所述导流叶片伸入内燃机气虹 头的进气通道。 An intake air guide device for an internal combustion engine, which is provided with inclined guide vanes to generate a swirling flow of the gas flowing through the guide vanes, and is characterized in that: the guide device is installed in a cylinder head of an internal combustion engine and an intake pipe; At the connection, the guide vanes extend into the intake passage of the gas rainbow head of the internal combustion engine.
2. 如权利要求 1所述的内燃机进气导流装置， 其特征在于： 所述导流叶片与夹持在气缸头与进气管之间的一法兰成形为一 体。  2. The air intake guide device for an internal combustion engine according to claim 1, wherein the guide vanes and a flange sandwiched between the cylinder head and the intake pipe are formed as one body.
3. 如权利要求 1所述的内燃机进气导流装置， 其特征在于： 所述导流装置具有带一周壁的圆形座，圆形座内形成一气流通道， 所迷导流叶片与所述圆形座连成一体。  3. The air intake guide device for an internal combustion engine according to claim 1, wherein the guide device has a circular seat with a peripheral wall, and an air flow channel is formed in the circular seat. The circular seat is connected into a whole.
4. 如权利要求 3所述的内燃机进气导流装置， 其特征在于： 气缸头的进气通道邻近进气口处具有一扩孔部分， 用以容纳所述 圆形座。  4. The air intake guide device for an internal combustion engine according to claim 3, wherein the intake passage of the cylinder head has a reaming portion adjacent to the intake port for receiving the circular seat.
5. 如权利要求 1所述的内燃机进气导流装置， 其特征在于： 所述导流叶片为一组分离的导流叶片。  5. The intake air guide device for an internal combustion engine according to claim 1, wherein the guide vanes are a set of separate guide vanes.
6. 如权利要求 2所述的内燃机进气导流装置， 其特征在于： 所述导流叶片呈流线型， 靠近进气通道的一侧表面， 并具有部分 伸入气缸头旋涡室的叶片头部。  6. The air intake guide device for an internal combustion engine according to claim 2, wherein: the guide vanes are streamlined, close to one side surface of the intake passage, and have a blade head partially protruding into the cylinder head vortex chamber. .
7. 如权利要求 6所述的内燃机进气导流装置， 其特征在于： 所述导流叶片偏向进气通道的底面。  7. The air intake guide device for an internal combustion engine according to claim 6, wherein the guide vanes are biased toward a bottom surface of the intake passage.
8. 如权利要求 6所述的内燃机进气导流装置， 其特征在于： 所述叶片头部的宽度变窄， 叶尖部分略微向叶片背面弯曲。  8. The air intake guide device for an internal combustion engine according to claim 6, wherein the width of the blade head is narrowed, and the blade tip portion is slightly curved toward the back of the blade.
9. 具有如权利要求 1至 8中任意一项所述的进气导流装置的 内燃机。  An internal combustion engine having an intake air guiding device according to any one of claims 1 to 8.
PCT/CN2002/000845 2001-11-23 2002-11-25 An inlet guiding device for an internal combustion engine WO2003044346A1 (en)

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CN01139378A CN1421601A (en) 2001-11-23 2001-11-23 Air intake guiding unit for internal combustion engine

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JP6994998B2 (en) * 2018-03-29 2022-01-14 本田技研工業株式会社 engine
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CN117803498A (en) * 2018-11-22 2024-04-02 潍坊力创电子科技有限公司 Air/gas mixing device for gas engine
CN113898793A (en) * 2021-11-19 2022-01-07 上海船舶研究设计院（中国船舶工业集团公司第六0四研究院） Air duct diversion accessory

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CN102482986A (en) * 2009-08-20 2012-05-30 品纳科动力有限公司 High swirl engine
FR2981985A1 (en) * 2011-10-27 2013-05-03 Pierre Yves Junker Vortex generating device for use in fluid supply system for supplying necessary fluid in motion of internal combustion engine of vehicle, has turbine installed at level of existing joint on inlet or outlet pipe of engine to convey fluids
CN105443275A (en) * 2015-12-14 2016-03-30 重庆博玉天成文化传媒有限责任公司 Fuel economizer and automobile engine system

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CN1615396A (en) 2005-05-11
CN100389250C (en) 2008-05-21
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