WO2014079057A1 - Steady-flow test station for measuring performance of engine vortex intake system - Google Patents

Steady-flow test station for measuring performance of engine vortex intake system Download PDF

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Publication number
WO2014079057A1
WO2014079057A1 PCT/CN2012/085257 CN2012085257W WO2014079057A1 WO 2014079057 A1 WO2014079057 A1 WO 2014079057A1 CN 2012085257 W CN2012085257 W CN 2012085257W WO 2014079057 A1 WO2014079057 A1 WO 2014079057A1
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Prior art keywords
vortex
engine
cylinder
intake system
intake
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PCT/CN2012/085257
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French (fr)
Chinese (zh)
Inventor
路明
Original Assignee
Lu Ming
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Priority to PCT/CN2012/085257 priority Critical patent/WO2014079057A1/en
Publication of WO2014079057A1 publication Critical patent/WO2014079057A1/en

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M15/00—Testing of engines
    • G01M15/04—Testing internal-combustion engines
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M15/00—Testing of engines
    • G01M15/04—Testing internal-combustion engines
    • G01M15/05—Testing internal-combustion engines by combined monitoring of two or more different engine parameters
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M15/00—Testing of engines
    • G01M15/04—Testing internal-combustion engines
    • G01M15/09—Testing internal-combustion engines by monitoring pressure in fluid ducts, e.g. in lubrication or cooling parts

Definitions

  • the present invention relates to the field of engine manufacturing, and more particularly to a steady flow test bench for measuring the performance of an engine vortex intake system.
  • the function is to measure the swirling capacity and aeration efficiency of the vortex formed by the engine vortex intake system in the cylinder. Background technique
  • the intake system of the engine mainly includes: an intake passage, a combustion chamber, an intake valve, and a mechanism for controlling the movement of the intake valve.
  • the performance of the engine intake system primarily refers to the intake efficiency of the intake system and the ability to cause rotational motion of the airflow entering the cylinder.
  • Intake efficiency is the ratio of the volume of gas entering the intake system to the displacement of the cylinder, which measures the flow capacity of the intake system. Because the airflow flows through the intake port, the intake valve, and the combustion chamber during the intake process, it will inevitably encounter flow resistance and affect the charging efficiency. A decrease in the efficiency of the engine's charge means that the output power of the engine is reduced.
  • the intake system can organize the intake process, causing a certain mode of rotational motion of the airflow entering the engine cylinder, which is beneficial to improve the combustion speed and heat release rate, thereby improving the combustion process of the engine.
  • the intake system produces intake air rotation, which is primarily the design of the geometry of the intake, combustion and intake valves.
  • FIG. 1 is a schematic illustration of a vortex motion pattern within an engine cylinder. This air movement mode has an important influence on the combustion process of the engine.
  • Eddy current motion refers to the motion of a rotating flow motion about a cylinder axis. During the intake process, the piston moves down and the piston moves up during the compression process. The movement of the eddy current in the cylinder and the shearing force on the cylinder wall surface cause the turbulent flow to continuously generate and accelerate the flame propagation speed.
  • the engine intake process is transient (variation with time), and the above parameters are generally measured under steady flow conditions.
  • the intake valves will be fixed one by one according to different intake valve lift positions to form a quasi-stable flow state.
  • the vortex speed and intake air flow are measured at each intake valve open position, and then obtained under quasi-stable conditions.
  • the measurement result is integrated, and finally the swirling capacity and the charging efficiency index of the vortex intake system are obtained.
  • Such a test rig is referred to as a steady flow test rig that measures the performance of an engine vortex intake system.
  • the steady flow experimental results are meaningful for the self-comparison of the engine intake system.
  • An object of the present invention is to provide a steady flow test stand for measuring the performance of an engine vortex intake system
  • Fig. 2 is a layout view of a steady flow test stand for measuring the performance of an engine vortex intake system proposed by the present invention.
  • the analog cylinder (6) is connected to a vortex exhaust pipe (3) with a vane anemometer (2);
  • the vortex exhaust pipe (3) is connected to a secondary voltage regulator box (1);
  • the secondary regulator (1) is connected to the exhaust passage (11);
  • blower (9) is sucked at each valve lift, and the pressure gauge is adjusted by adjusting the blower (9).
  • the differential pressure ⁇ in (7) is a certain value.
  • the flow rate in the flow meter (8) and the vane anemometer (2) in the tachometer (4) can be read to obtain the eddy current ratio R and the charging efficiency.
  • the eddy current ratio on the steady flow test bench can be defined as
  • N s is the rotational speed of the blade anemometer under a certain valve lift, dimension is rev / min; is the gas volume under a certain valve lift: the outline is m V seconds; is the engine crank angle, this The position can be converted into the valve lift height; it is the engine cylinder displacement.
  • the inflation efficiency of the intake system is
  • ⁇ is the theoretical intake velocity, v 0 , dimension is m/s; is the differential pressure in the flowmeter; Valve valve seat area.
  • the performance index of the vortex air intake system needs to integrate the eddy current ratio and the charging efficiency, obtain the average eddy current ratio of the intake process, and the average charging efficiency, as an index to measure the performance of the intake system.
  • the average inflation efficiency is The device is capable of measuring vortex motion in the engine cylinder and the charging efficiency of the vortex intake system.
  • the device is simple in structure, simple in operation, easy to maintain, and can be used in the development of new intake ports, intake valves, and combustion chambers of the engine, and can also be used to detect the performance of the intake system during engine manufacturing.
  • Figure 1 is a schematic diagram of the vortex motion pattern in the engine cylinder.
  • Figure 2 is a layout diagram of a steady flow test bench for measuring the performance of an engine vortex intake system.
  • 1 secondary regulator 2 blade anemometer, 3 vortex exhaust pipe, 4 tachometer, 5 eddy current direction, 6 analog cylinder, 7 pressure gauge, 8 flowmeter, 9 blower, 10 regulator, 11 exhaust ducts.
  • Figure 3 is a layout diagram of a specific embodiment of a steady flow test bench for measuring the performance of an engine vortex intake system.
  • 1 secondary regulator 2 blade anemometer, 3 vortex exhaust pipe, 4 tachometer, 6 analog cylinder, 7 pressure gauge, 8 flowmeter, 9 blower, 10 surge tank, 11 exhaust duct, 15 intake valves, 16 intake ports, 17 cylinder heads, 18 cylinder head positioning system, 19 quartz windows.
  • FIG. 3 is a specific implementation of a steady flow test bench for measuring the performance of an engine vortex intake system. Board map.
  • a cylinder head positioning system (18) is first placed on a simulated cylinder (6) having a cylindrical thin-walled cavity for the purpose of aligning the cylinder head (17) with the simulated cylinder (6).
  • a vane anemometer (2) In order to measure large-scale vortex motion in the cylinder, a vane anemometer (2) must be placed in the vortex exhaust pipe (3) to measure the rotational speed in the direction of vortex rotation (5).
  • the vortex exhaust pipe (3) is a cylindrical thin-walled pipe with a diameter of two-thirds of the diameter of the simulated cylinder (6).
  • the vortex exhaust pipe is at the bottom of the (3) simulation cylinder (6).
  • the blade anemometer (2) in the vortex exhaust pipe is rotated by the air flow.
  • the photoelectric tachometer on the tachometer (4) passes the photoelectric sensor on the positive vane anemometer (2) through the quartz window (19) to record the rotational speed of the vane anemometer (2).
  • the vortex exhaust pipe (3) is connected to a secondary regulator (1), which is a rectangular parallelepiped cavity that reduces the pulsation of the incoming air flow.
  • the secondary surge tank (1) is connected to the exhaust passage (11) in the shape of a cylindrical thin-walled pipe with a pressure gauge (7) and a flow meter (8) on the wall.
  • the flow meter (8) can be a plate hole flow meter or a vortex flow meter.
  • the exhaust passage (11) is connected to the surge tank (10), which is a rectangular parallelepiped cavity with an air blower (9).
  • the purpose of the surge tank (10) is to reduce the intake pulsation of the blower (9), allowing the test to run in a steady flow.
  • the intake valve (15) is fixed in position, allowing the blower (9) to draw air, and the airflow entering through the intake port (17) into the analog cylinder (6). Adjust the speed of the blower (9), adjust the intake air volume, keep the differential pressure ⁇ in the pressure gauge (7) at a certain value, and read the flow rate in the flowmeter (8) and the blade anemometer in the tachometer (4).

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measuring Volume Flow (AREA)

Abstract

Disclosed is a steady-flow test station for measuring the performance of an engine vortex intake system, the test station comprising a dummy cylinder (6), a vortex exhaust pipe (3), a vane anemometer (2), a tachometer (4), a manometer (7), a flow meter (8), an exhaust duct (11), a two-stage pressure stabilizing tank (1), a pressure stabilizing tank (10), and a blower (9). The test station can simultaneously measure the aeration efficiency and the macro large-scale vortex movement intensity generated by the engine vortex intake system.

Description

测量发动机涡流进气系统的性能的稳流试验台  Steady flow test bench for measuring the performance of an engine vortex intake system
技术领域 Technical field
本发明涉及发动机制造领域，具体是一种测量发动机涡流进气系统的性能的稳流试验台。 功能是测量发动机涡流进气系统在汽缸内形成的涡流的旋流能力和充气效率。 背景技术  The present invention relates to the field of engine manufacturing, and more particularly to a steady flow test bench for measuring the performance of an engine vortex intake system. The function is to measure the swirling capacity and aeration efficiency of the vortex formed by the engine vortex intake system in the cylinder. Background technique
发动机的进气系统主要包括：进气道、 燃烧室、进气门， 以及控制进气门运动的机构等部 件。 发动机进气系统的性能主要是指进气系统的进气效率和使进入汽缸内的气流产生旋转运 动的能力。 进气效率是指通过进气系统进入的气体体积和汽缸排量之比， 它衡量进气系统的 流通能力。 因为进气过程中气流流经进气道、 进气门、 燃烧室， 必然会遇到流动阻力， 影响 充气效率。 发动机的充气效率降低意味着发动机的输出功率下降。  The intake system of the engine mainly includes: an intake passage, a combustion chamber, an intake valve, and a mechanism for controlling the movement of the intake valve. The performance of the engine intake system primarily refers to the intake efficiency of the intake system and the ability to cause rotational motion of the airflow entering the cylinder. Intake efficiency is the ratio of the volume of gas entering the intake system to the displacement of the cylinder, which measures the flow capacity of the intake system. Because the airflow flows through the intake port, the intake valve, and the combustion chamber during the intake process, it will inevitably encounter flow resistance and affect the charging efficiency. A decrease in the efficiency of the engine's charge means that the output power of the engine is reduced.
进气系统可以对进气过程进行组织， 造成进入发动机汽缸内的气流产生一定模式的旋转 运动， 有利于提高燃烧速度和放热率， 致使改善发动机的燃烧过程。 进气系统产生进气旋转 主要是由进气道、 燃烧室和进气门的几何形状的设计完成的。  The intake system can organize the intake process, causing a certain mode of rotational motion of the airflow entering the engine cylinder, which is beneficial to improve the combustion speed and heat release rate, thereby improving the combustion process of the engine. The intake system produces intake air rotation, which is primarily the design of the geometry of the intake, combustion and intake valves.
众所周知， 发动机汽缸内有一种基本的旋转运动模式， 涡流 （swirl )。 图 1是发动机汽 缸内涡流运动模式的示意图。 这种气流运动模式对发动机的燃烧过程有重要影响。 涡流运动 是指旋转流动运动围绕气缸轴线的运动。 进气过程活塞下移、 压缩过程活塞上移， 气缸内涡 流的运动与气缸壁面产生剪切力， 致使湍流持续不断产生， 加快了火焰传播速度。 发动机汽 缸内的涡流的旋流能力用涡流比 r表示， r =— ( 1 ) ωε 式中 r是涡流比； 是涡流转速； ^¾是发动机转速。 发动机进气过程是瞬态的 （随时间变 化)， 而上述参数的测量一般是在稳定流动状态下进行的。测量时将按照不同的进气门升程位 置逐次固定进气门， 形成准稳定流动状态， 在每一个进气门开启位置下进行涡流转速和进气 流量的测量， 再将准稳定条件下获得的测量结果进行积分运算， 最终获得该涡流进气系统的 旋流能力和充气效率指标。 这样的试验台架被称为测量发动机涡流进气系统的性能的稳流试 验台。 稳流实验结果对发动机进气系统的自身比较是有意义的。 It is well known that there is a basic mode of rotational motion in the engine cylinders, a swirl. Figure 1 is a schematic illustration of a vortex motion pattern within an engine cylinder. This air movement mode has an important influence on the combustion process of the engine. Eddy current motion refers to the motion of a rotating flow motion about a cylinder axis. During the intake process, the piston moves down and the piston moves up during the compression process. The movement of the eddy current in the cylinder and the shearing force on the cylinder wall surface cause the turbulent flow to continuously generate and accelerate the flame propagation speed. The swirling capacity of the vortex in the engine cylinder is expressed by the eddy current ratio r, r = - ( 1 ) ω ε where r is the eddy current ratio; is the eddy current speed; ^ 3⁄4 is the engine speed. The engine intake process is transient (variation with time), and the above parameters are generally measured under steady flow conditions. During the measurement, the intake valves will be fixed one by one according to different intake valve lift positions to form a quasi-stable flow state. The vortex speed and intake air flow are measured at each intake valve open position, and then obtained under quasi-stable conditions. The measurement result is integrated, and finally the swirling capacity and the charging efficiency index of the vortex intake system are obtained. Such a test rig is referred to as a steady flow test rig that measures the performance of an engine vortex intake system. The steady flow experimental results are meaningful for the self-comparison of the engine intake system.
为测量发动机涡流进气系统的性能， 需要一个既能测量发动机汽缸内的涡流能力， 同时 测量发动机的充气效率的、 具有工业实用性的装置。 发明内容 In order to measure the performance of an engine vortex intake system, an industrially practical device is required that can measure the vortex capacity in the engine cylinder while measuring the aeration efficiency of the engine. Summary of the invention
本发明的目的是提供一种测量发动机涡流进气系统的性能的稳流试验台， 图 2是本发明 提出的测量发动机涡流进气系统的性能的稳流试验台的布局图。 包括一个模拟汽缸 （6)、 一 个涡流排气管 （3)、 一个叶片风速仪 （2)、 一个转速表 （4)、 一个压力计 （7)、 一个流量计 (8)、 一个排气道（11 )、 一个二级稳压箱（1 )、 一个稳压箱（10)、 一个鼓风机（9)等部件， 各个部件的连接关系是：  SUMMARY OF THE INVENTION An object of the present invention is to provide a steady flow test stand for measuring the performance of an engine vortex intake system, and Fig. 2 is a layout view of a steady flow test stand for measuring the performance of an engine vortex intake system proposed by the present invention. Includes an analog cylinder (6), a vortex exhaust pipe (3), a blade anemometer (2), a tachometer (4), a pressure gauge (7), a flow meter (8), and an exhaust passage (11), a secondary voltage regulator box (1), a voltage regulator box (10), a blower (9) and other components, the connection relationship of each component is:
模拟汽缸 （6) 连接一个内部装有一个叶片风速仪 （2) 的涡流排气管 （3);  The analog cylinder (6) is connected to a vortex exhaust pipe (3) with a vane anemometer (2);
涡流排气管 （3) 连接到一个二级稳压箱 （1 );  The vortex exhaust pipe (3) is connected to a secondary voltage regulator box (1);
二级稳压箱 （1 ) 连接至排气道 （11 );  The secondary regulator (1) is connected to the exhaust passage (11);
排气道 （11 ) 壁面上安装压力计 （7) 和流量计 （8)， 再接到另一个稳压箱 （10)。 如图 2中所示， 为了测量缸内大尺度的涡流运动， 必须把一个叶片式风速仪 （2) 放在涡 流排气管 （3 ) 中， 测量涡流运动方向 （5) 上的气流转速。 而实际运行过程中， 发动机缸内 涡流的位置、 强弱都在不断变化， 所以， 风速仪 （2) 的转速只反映了在特定位置上缸内大部 分气流的运动状况。 稳流模拟实验的结果作为自身的相对比较是有价值的。  Install the pressure gauge (7) and flow meter (8) on the exhaust side (11) and connect to the other surge tank (10). As shown in Fig. 2, in order to measure large-scale vortex motion in the cylinder, a vane anemometer (2) must be placed in the vortex exhaust pipe (3) to measure the airflow speed in the direction of vortex motion (5). In actual operation, the position, strength and weakness of the vortex in the engine cylinder are constantly changing. Therefore, the rotation speed of the anemometer (2) only reflects the movement of most of the airflow in the cylinder at a specific position. The results of steady flow simulation experiments are valuable as a relative comparison of themselves.
试验时， 在每一个气门升程下， 让鼓风机 （9) 吸风， 通过调节鼓风机 （9) 使得压力计 During the test, the blower (9) is sucked at each valve lift, and the pressure gauge is adjusted by adjusting the blower (9).
( 7) 中的压差 ΔΡ为一定值， 读出流量计 （8) 中的流量 以及和转速表 （4) 中的叶片风速 仪 （2) 转速， 即可取得涡流比 R， 以及充气效率 。 稳流试验台使用原理： The differential pressure ΔΡ in (7) is a certain value. The flow rate in the flow meter (8) and the vane anemometer (2) in the tachometer (4) can be read to obtain the eddy current ratio R and the charging efficiency. The principle of steady flow test bench:
稳流试验台上涡流比可以定义为  The eddy current ratio on the steady flow test bench can be defined as
Ns e Vh N s e V h
( 2) 式中 Ns( 是某一气门升程下叶片风速仪的转速， 量纲为转 /分钟； 是某一气门 升程下气体体积 ：纲为米 V秒； 是发动机曲轴转角， 此处可以转换成气门升程高度; 是发动机汽缸排量。 进气系统的充气效率为 (2) where N s is the rotational speed of the blade anemometer under a certain valve lift, dimension is rev / min; is the gas volume under a certain valve lift: the outline is m V seconds; is the engine crank angle, this The position can be converted into the valve lift height; it is the engine cylinder displacement. The inflation efficiency of the intake system is
( 3) 式中^)是理论进气速度， v0 , 量纲为米 /秒； 是流量计中的压差； 是进
Figure imgf000003_0001
气门气门座面积。 涡流进气系统的性能指标需要对涡流比、 充气效率进行积分， 得到进气过 程的平均涡流比， 以及平均充气效率， 作为衡量进气系统性能的指标。 平均涡流比定义为 = π Ν( άθ ( 4)
Figure imgf000004_0001
(3) where ^) is the theoretical intake velocity, v 0 , dimension is m/s; is the differential pressure in the flowmeter;
Figure imgf000003_0001
Valve valve seat area. The performance index of the vortex air intake system needs to integrate the eddy current ratio and the charging efficiency, obtain the average eddy current ratio of the intake process, and the average charging efficiency, as an index to measure the performance of the intake system. The average eddy current ratio is defined as = π Ν ( ά θ ( 4)
Figure imgf000004_0001
考虑到压缩比和充气效率的影响， 经 比为  Taking into account the effects of compression ratio and aeration efficiency, the ratio is
平均充气效率为
Figure imgf000004_0002
该装置能够测量发动机汽缸内涡流运动， 以及涡流进气系统的充气效率。 该装置结构简 单、 操作简便， 易于维护， 可用于发动机的新型进气道、 进气门、 燃烧室的开发过程， 也可 用于发动机制造过程中检测进气系统的性能。 The average inflation efficiency is
Figure imgf000004_0002
The device is capable of measuring vortex motion in the engine cylinder and the charging efficiency of the vortex intake system. The device is simple in structure, simple in operation, easy to maintain, and can be used in the development of new intake ports, intake valves, and combustion chambers of the engine, and can also be used to detect the performance of the intake system during engine manufacturing.
附图说明 DRAWINGS
图 1是发动机汽缸内涡流运动模式示意图。 图中， 12活塞、 13汽缸、 14排气门、 15进 气门、 16进气道、 5涡流运动方向。  Figure 1 is a schematic diagram of the vortex motion pattern in the engine cylinder. In the figure, 12 pistons, 13 cylinders, 14 exhaust valves, 15 intake valves, 16 intake ports, 5 vortex motion directions.
图 2是测量发动机涡流进气系统的性能的稳流试验台的布局图。 图中， 1二级稳压箱、 2叶片风速仪、 3涡流排气管、 4转速表、 5涡流运动方向、 6模拟汽缸、 7压力计、 8流量计、 9鼓风机、 10稳压箱、 11排气道。  Figure 2 is a layout diagram of a steady flow test bench for measuring the performance of an engine vortex intake system. In the figure, 1 secondary regulator, 2 blade anemometer, 3 vortex exhaust pipe, 4 tachometer, 5 eddy current direction, 6 analog cylinder, 7 pressure gauge, 8 flowmeter, 9 blower, 10 regulator, 11 exhaust ducts.
图 3是测量发动机涡流进气系统的性能的稳流试验台的具体实施方案布局图。 图中， 1 二级稳压箱、 2叶片风速仪、 3涡流排气管、 4转速表、 6模拟汽缸、 7压力计、 8流量计、 9 鼓风机、 10稳压箱、 11排气道、 15进气门、 16进气道、 17汽缸盖、 18汽缸盖定位系统、 19 石英窗。  Figure 3 is a layout diagram of a specific embodiment of a steady flow test bench for measuring the performance of an engine vortex intake system. In the figure, 1 secondary regulator, 2 blade anemometer, 3 vortex exhaust pipe, 4 tachometer, 6 analog cylinder, 7 pressure gauge, 8 flowmeter, 9 blower, 10 surge tank, 11 exhaust duct, 15 intake valves, 16 intake ports, 17 cylinder heads, 18 cylinder head positioning system, 19 quartz windows.
具体实施方式 detailed description
以一个具体实施方案进一步说明本发明提出的测量发动机涡流进气系统的性能的稳流试 验台的结构和原理。 图 3是测量发动机涡流进气系统的性能的稳流试验台的具体实施方案布 局图。 如图中所示， 首先在呈圆柱形薄壁腔体的模拟汽缸（6)上安置汽缸盖定位系统（18)， 目的是为将汽缸盖 （17) 与模拟汽缸 （6) 对正。 为了测量缸内大尺度的涡流运动， 必须把一 个叶片式风速仪 （2)放在涡流排气管 （3) 中， 测量涡流旋转运动方向 （5) 上的转速。 涡流 排气管（3)均为圆柱形薄壁管道， 直径为模拟汽缸（6)直径的三分之二。 涡流排气管在（3) 模拟汽缸 （6) 底部。 涡流排气管中的叶片风速仪 （2) 由气流带动其旋转。 涡流排气管 （3) 上有小的石英窗 （19) 。 转速表 （4)上的光电转速器通过石英窗 （19)对正叶片风速仪 （2) 上的光电传感器， 以记录叶片风速仪 （2) 的转速。 The structure and principle of a steady flow test bench for measuring the performance of an engine vortex intake system proposed by the present invention is further illustrated in a specific embodiment. Figure 3 is a specific implementation of a steady flow test bench for measuring the performance of an engine vortex intake system. Board map. As shown in the figure, a cylinder head positioning system (18) is first placed on a simulated cylinder (6) having a cylindrical thin-walled cavity for the purpose of aligning the cylinder head (17) with the simulated cylinder (6). In order to measure large-scale vortex motion in the cylinder, a vane anemometer (2) must be placed in the vortex exhaust pipe (3) to measure the rotational speed in the direction of vortex rotation (5). The vortex exhaust pipe (3) is a cylindrical thin-walled pipe with a diameter of two-thirds of the diameter of the simulated cylinder (6). The vortex exhaust pipe is at the bottom of the (3) simulation cylinder (6). The blade anemometer (2) in the vortex exhaust pipe is rotated by the air flow. There is a small quartz window (19) on the vortex exhaust pipe (3). The photoelectric tachometer on the tachometer (4) passes the photoelectric sensor on the positive vane anemometer (2) through the quartz window (19) to record the rotational speed of the vane anemometer (2).
涡流排气管 （3) 连接到一个二级稳压箱 （1) ， 是一个长方体形状的空腔， 可以减弱进 气流动的脉动。 二级稳压箱（1)连接排气道（11) ， 其形状是圆柱形薄壁管道， 壁面上接入 压力计 （7)和流量计 （8) 。 流量计 （8)可以是板孔流量计或涡街流量计。 排气道 （11) 再 接入稳压箱 （10) ， 是一个长方体形状的空腔， 上面接入鼓风机 （9) 。 稳压箱 （10) 的作用 是为了减弱鼓风机 （9) 的进气脉动， 使得试验在稳定流动中运行。  The vortex exhaust pipe (3) is connected to a secondary regulator (1), which is a rectangular parallelepiped cavity that reduces the pulsation of the incoming air flow. The secondary surge tank (1) is connected to the exhaust passage (11) in the shape of a cylindrical thin-walled pipe with a pressure gauge (7) and a flow meter (8) on the wall. The flow meter (8) can be a plate hole flow meter or a vortex flow meter. The exhaust passage (11) is connected to the surge tank (10), which is a rectangular parallelepiped cavity with an air blower (9). The purpose of the surge tank (10) is to reduce the intake pulsation of the blower (9), allowing the test to run in a steady flow.
试验时， 在每一个气门升程下， 将进气门 （15) 位置固定， 让鼓风机 （9) 吸风， 气流进 入通过进气道 （17) 进如模拟汽缸 （6) 。 调节鼓风机 （9) 的转速， 调节进气量， 使压力计 (7) 中的压差 ΔΡ保持为一定值， 读出流量计 （8) 中的流量和转速表 （4) 中的叶片风速仪 During the test, at each valve lift, the intake valve (15) is fixed in position, allowing the blower (9) to draw air, and the airflow entering through the intake port (17) into the analog cylinder (6). Adjust the speed of the blower (9), adjust the intake air volume, keep the differential pressure ΔΡ in the pressure gauge (7) at a certain value, and read the flow rate in the flowmeter (8) and the blade anemometer in the tachometer (4).
(2)转速， 按照前面的公式（5)和 （6) 即可取得进气系统的涡流比 R， 以及充气效率 (2) Rotating speed, the vortex ratio R of the intake system and the charging efficiency can be obtained according to the above formulas (5) and (6).
附图标记列表 List of reference signs
1二级稳压箱  1 secondary voltage regulator
2叶片风速仪  2 blade anemometer
3涡流排气管  3 vortex exhaust pipe
4转速表  4 tachometer
5涡流运动方向  5 eddy current direction
6模拟汽缸  6 analog cylinder
7压力计  7 pressure gauge
8流量计  8 flow meter
9鼓风机  9 blower
10稳压箱  10 voltage regulator
11排气道 活塞 11 exhaust duct Piston
汽缸 Cylinder
排气门 进气门 进气道 汽缸盖 汽缸盖定位系统 石英窗 Exhaust valve Intake valve Intake port Cylinder head Cylinder head positioning system Quartz window

Claims

WO 2014/079057 权 利 要 求 书 PCT/CN2012/085257 WO 2014/079057 Claim PCT/CN2012/085257
1. 一种测量发动机进气涡流系统的性能的稳流试验台， 其特征是， 包括一个模拟汽缸 （6)、 一个涡流排气管 （3)、 一个叶片风速仪 （2)、 一个转速表 （4)、 一个压力计 （7)、 一个流 量计 （8)、 一个排气道 （11 )、 一个二级稳压箱 （1 )、 一个稳压箱 （10)、 一个鼓风机 （9) 等部件， 各个部件的连接关系是： 1. A steady flow test rig for measuring the performance of an engine intake vortex system, comprising: an analog cylinder (6), a vortex exhaust pipe (3), a blade anemometer (2), a tachometer (4), a pressure gauge (7), a flow meter (8), an exhaust passage (11), a secondary regulator (1), a surge tank (10), a blower (9), etc. The connection relationship between the components and the components is:
模拟汽缸 （6) 连接一个内部装有一个叶片风速仪 （2) 的涡流排气管 （3);  The analog cylinder (6) is connected to a vortex exhaust pipe (3) with a vane anemometer (2);
涡流排气管 （3) 连接到一个二级稳压箱 （1 );  The vortex exhaust pipe (3) is connected to a secondary voltage regulator box (1);
二级稳压箱 （1 ) 连接至排气道 （11 );  The secondary regulator (1) is connected to the exhaust passage (11);
排气道 （11 ) 连接压力计 （7) 和流量计 （8)， 再接到另一个稳压箱 （10)。  The exhaust passage (11) is connected to the pressure gauge (7) and the flow meter (8) before being connected to the other surge tank (10).
2. 根据权利要求 1所述的测量发动机涡流进气系统的性能的稳流试验台， 其特征在于， 所述 的模拟汽缸 （6) 是呈圆柱形的薄壁腔体。  2. A steady flow test rig for measuring the performance of an engine vortex intake system according to claim 1, wherein said simulated cylinder (6) is a cylindrical thin walled cavity.
3. 根据权利要求 1所述的测量发动机涡流进气系统的性能的稳流试验台， 其特征在于， 所述 的涡流排气管 （3)呈圆柱形薄壁管道的形状， 直径为模拟汽缸（6)直径的三分之二， 沿 轴线方向连接在沿模拟气缸 （6) 的中心轴线方向的底部位置。  3. The steady flow test bench for measuring the performance of an engine vortex intake system according to claim 1, wherein the vortex exhaust pipe (3) is in the shape of a cylindrical thin-walled pipe, and the diameter is an analog cylinder. (6) Two-thirds of the diameter is connected in the axial direction at the bottom position along the central axis of the simulated cylinder (6).
PCT/CN2012/085257 2012-11-26 2012-11-26 Steady-flow test station for measuring performance of engine vortex intake system WO2014079057A1 (en)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4658640A (en) * 1985-02-03 1987-04-21 Mazda Motor Corporation Acceleration detecting systems for internal combustion engines
US5323645A (en) * 1991-10-08 1994-06-28 Fev Motorentechnik Gmbh & Co. Kg Device to investigate the flow movement in cylindrical components
JP2004293297A (en) * 2003-03-25 2004-10-21 Isuzu Motors Ltd Swirl measuring device
JP2004317218A (en) * 2003-04-15 2004-11-11 Isuzu Motors Ltd Vane rotating swirl detection body and swirl measuring apparatus
CN202330026U (en) * 2011-10-08 2012-07-11 天津空中代码工程应用软件开发有限公司 Steady flow test bed for measuring performance of engine intake systems

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4658640A (en) * 1985-02-03 1987-04-21 Mazda Motor Corporation Acceleration detecting systems for internal combustion engines
US5323645A (en) * 1991-10-08 1994-06-28 Fev Motorentechnik Gmbh & Co. Kg Device to investigate the flow movement in cylindrical components
JP2004293297A (en) * 2003-03-25 2004-10-21 Isuzu Motors Ltd Swirl measuring device
JP2004317218A (en) * 2003-04-15 2004-11-11 Isuzu Motors Ltd Vane rotating swirl detection body and swirl measuring apparatus
CN202330026U (en) * 2011-10-08 2012-07-11 天津空中代码工程应用软件开发有限公司 Steady flow test bed for measuring performance of engine intake systems

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