WO2014079059A1 - Steady-flow test station for measuring performance of engine tumble intake system - Google Patents
Steady-flow test station for measuring performance of engine tumble intake system Download PDFInfo
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- WO2014079059A1 WO2014079059A1 PCT/CN2012/085260 CN2012085260W WO2014079059A1 WO 2014079059 A1 WO2014079059 A1 WO 2014079059A1 CN 2012085260 W CN2012085260 W CN 2012085260W WO 2014079059 A1 WO2014079059 A1 WO 2014079059A1
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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
- G01M15/05—Testing internal-combustion engines by combined monitoring of two or more different engine parameters
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 tumble intake system.
- the function is to measure the swirling capacity and aeration efficiency of the tumble flow formed by the engine tumble 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 impart rotational motion to 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 during the intake process flows through the intake port, the intake valve, and the combustion chamber, 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 cylinders, which is beneficial to increase the combustion speed and heat release rate, thereby improving the combustion process of the engine.
- the intake system produces intake air.
- the rotation is primarily the design of the geometry of the intake, combustion and intake valves.
- FIG. 1 is a schematic illustration of the tumble motion pattern in the engine cylinder.
- This air movement mode has an important influence on the combustion process of the engine.
- Tumble refers to the movement of a rotational motion about an axis perpendicular to the cylinder axis.
- a tumble flow is formed.
- the piston rises during the compression process the cylinder space becomes smaller until the tumble motion breaks, forming a turbulent flow field dominated by large-scale vortices, further accelerating the flame propagation speed.
- the swirling capacity of the tumble flow in the engine cylinder is expressed by the tumble ratio r.
- r is the tumble ratio; is the tumble 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.
- the intake valves will be fixed one by one according to different intake valve lift positions to form a quasi-stable flow state.
- the tumble speed and intake air flow are measured under each intake valve open position, and then under quasi-stable conditions.
- the obtained measurement result is integrated, and finally the swirling capacity and the charging efficiency index of the intake system are obtained.
- Such a test rig is referred to as a steady flow test rig that measures the performance of an engine tumble 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 tumble intake system
- Fig. 2 is a layout view of a steady flow test stand for measuring the performance of an engine tumble intake system proposed by the present invention.
- the circuit (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:
- the analog cylinder (6) is connected to a tumble exhaust pipe (3) with a vane anemometer (2) inside;
- the tumble exhaust pipe (3) is connected to a secondary voltage regulator box (1) through a connecting pipe (20);
- the secondary regulator (1) is connected to the exhaust passage (11);
- a pressure gauge (7) and a flow meter (8) are installed on the wall of the exhaust passage (11), and then connected to another surge tank (10).
- a vane anemometer (2) in order to measure the large-scale tumble motion in the cylinder, a vane anemometer (2) must be placed in the horizontally placed tumble exhaust pipe (3) to measure the direction of tumble motion (5). The speed of the airflow on the). In actual operation, the position, strength and weakness of the engine cylinder are constantly changing. Therefore, the speed of the anemometer (2) only reflects the movement of most of the airflow in the cylinder at a specific position. The results of the steady flow simulation experiment are valuable as a relative comparison of itself.
- the blower (9) is sucked at each valve lift, and the pressure difference ⁇ in the pressure gauge (9) is adjusted to a certain value by adjusting the blower (9), and the flow rate in the flow meter (8) is read out.
- the speed of the blade anemometer (2) in the tachometer (4), the eddy current ratio or the tumble ratio R can be obtained, and the charging efficiency steady flow test bench uses the principle:
- the tumble ratio on the steady flow test bench can be defined as
- N s is the speed of the blade anemometer under a certain valve lift, dimension is rev / min; is the volume of gas under a certain valve lift: the outline is 3 / sec; is the engine crankshaft Corner, here can be converted into a valve lifter 'main;
- the average inflation efficiency is The device is capable of measuring the tumble motion of the engine cylinder and the charging efficiency of the tumble air 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 engine tumble motion mode. In the figure, 5 tumble motion directions, 12 pistons, 13 cylinders, 14 exhaust valves, 15 intake valves, 16 intake ports.
- Figure 2 is a layout diagram of a steady flow test rig measuring the performance of an engine tumble intake system.
- 1 secondary regulator 2 blade anemometer, 3 tumble exhaust pipe, 4 tachometer, 5 tumble motion direction, 6 analog cylinder, 7 pressure gauge, 8 flowmeter, 9 blower, 10 regulator Box, 11 exhaust ducts, 20 connecting pipes.
- Figure 3 is a layout diagram of a specific embodiment of a steady flow test bench for measuring the performance of an engine tumble intake system.
- 1 secondary regulator 2 blade anemometer, 3 tumble exhaust pipe, 4 tachometer, 6 analog cylinder, 7 pressure gauge, 8 flowmeter, 9 blower, 10 surge tank, 11 exhaust passage , 15 intake valves, 16 intake ports, 17 cylinder heads, 18 cylinder head positioning system, 19 quartz windows, 20 connecting pipes.
- FIG. 3 is a concrete implementation of a steady flow test bench for measuring the performance of an engine tumble air intake system. Plan layout. 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 the large-scale tumble motion in the cylinder, a vane anemometer (2) must be placed in the tumble exhaust pipe (3) to measure the rotational speed in the direction of the tumble motion (5).
- the tumble exhaust pipe (3) is a cylindrical thin-walled pipe with a diameter of two-thirds of the diameter of the simulated cylinder (6).
- the center axis of the tumble exhaust pipe (3) is perpendicular to the central axis of the simulated cylinder and is mounted on the lower part of the simulated cylinder (6) along the axial direction in order to simulate the tumble motion of the end of the intake air.
- the blade anemometer (2) in the tumble exhaust pipe is rotated by the air flow.
- the photoelectric tachometer on the tachometer (4) aligns the photoelectric sensor on the positive vane anemometer (2) through the quartz window (19) to record the rotational speed of the vane anemometer.
- the tumble exhaust pipe (3) is connected to a secondary surge tank (1) through a connecting pipe (20), which is a rectangular-shaped cavity that can reduce the pulsation of the intake air flow.
- the secondary regulator (1) is connected to the exhaust duct (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 air flow enters through the intake port (16) into the analog cylinder (6).
- Adjust the speed of the blower (9), adjust the intake air quantity keep the pressure difference ⁇ in the pressure gauge (7) at a certain value, read the flow rate in the flow meter (8) and the blade anemometer in the tachometer (4) (2) Speed, according to the above formulas (5) and (6), the vortex flow ratio R of the intake system and the charging efficiency can be obtained.
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Abstract
A steady-flow test station for measuring the performance of an engine tumble intake system, comprising a dummy cylinder (6), a tumble 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 tumble movement intensity generated by the engine tumble intake system.
Description
说 明 书 Description
测量发动机滚流进气系统的性能的稳流试验台 技术领域 Steady flow test bench for measuring the performance of an engine tumble air intake system
本发明涉及发动机制造领域， 具体是一种测量发动机滚流进气系统的性能的稳流试验 台。 功能是测量发动机滚流进气系统在汽缸内形成的滚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 tumble intake system. The function is to measure the swirling capacity and aeration efficiency of the tumble flow formed by the engine tumble 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 impart rotational motion to 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 during the intake process flows through the intake port, the intake valve, and the combustion chamber, 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 cylinders, which is beneficial to increase the combustion speed and heat release rate, thereby improving the combustion process of the engine. The intake system produces intake air. The rotation 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， 滚流 (tumble)。 图 1是发动机 汽缸内滚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。 滚流 是指旋转运动围绕与气缸轴线相垂直的轴线的运动。 在进气过程后期形成滚流， 压缩过程 中随着活塞上升， 气缸空间变小， 直至滚流运动发生破碎， 形成以大尺度漩涡为主的湍流 场， 进一步加快了火焰传播速度。 发动机汽缸内的滚流的旋流能力用滚流比 r表示， It is well known that there is a basic mode of rotational motion in the engine cylinders, tumble. Figure 1 is a schematic illustration of the tumble motion pattern in the engine cylinder. This air movement mode has an important influence on the combustion process of the engine. Tumble refers to the movement of a rotational motion about an axis perpendicular to the cylinder axis. During the late stage of the intake process, a tumble flow is formed. As the piston rises during the compression process, the cylinder space becomes smaller until the tumble motion breaks, forming a turbulent flow field dominated by large-scale vortices, further accelerating the flame propagation speed. The swirling capacity of the tumble flow in the engine cylinder is expressed by the tumble ratio r.
0)s 式中 r是滚流比； 是滚流转速； ^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滚流转 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滚流进气系统的性能 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。 。 0) s where r is the tumble ratio; is the tumble 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 tumble speed and intake air flow are measured under each intake valve open position, and then under quasi-stable conditions. The obtained measurement result is integrated, and finally the swirling capacity and the charging efficiency index of the intake system are obtained. Such a test rig is referred to as a steady flow test rig that measures the performance of an engine tumble intake system. The steady flow experimental results are meaningful for the self-comparison of the engine intake system. .
为测量发动机滚流进气系统的性能， 需要一个既能测量发动机汽缸内的滚流能力， 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 tumble intake system, an industrially practical device is required that can measure the tumble capability 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滚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滚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)、 一个滚流排气管 （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 tumble intake system, and Fig. 2 is a layout view of a steady flow test stand for measuring the performance of an engine tumble intake system proposed by the present invention. Includes an analog cylinder (6), a tumble exhaust pipe (3), a vane anemometer (2), a tachometer (4), a pressure gauge (7), a flow meter (8), and an exhaust The circuit (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) 的滚流排气管 （3); The analog cylinder (6) is connected to a tumble exhaust pipe (3) with a vane anemometer (2) inside;
滚流排气管 （3) 通过连接管道 （20) 连接到一个二级稳压箱 （1 ); The tumble exhaust pipe (3) is connected to a secondary voltage regulator box (1) through a connecting pipe (20);
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 ) 的壁面上安装压力计 （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滚流运动， 必须把一个叶片式风速仪 （2) 放 在横放的滚流排气管中 （3) ， 测量滚流运动方向 （5)上的气流转速。 而实际运行过程中， 发动机缸内滚流的位置、 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。 A pressure gauge (7) and a flow meter (8) are installed on the wall of the exhaust passage (11), and then connected to another surge tank (10). As shown in Figure 2, in order to measure the large-scale tumble motion in the cylinder, a vane anemometer (2) must be placed in the horizontally placed tumble exhaust pipe (3) to measure the direction of tumble motion (5). The speed of the airflow on the). In actual operation, the position, strength and weakness of the engine cylinder are constantly changing. Therefore, the speed of the anemometer (2) only reflects the movement of most of the airflow in the cylinder at a specific position. The results of the steady flow simulation experiment are valuable as a relative comparison of itself.
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 （9) 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， 即可取得涡流比或滚流比 R， 以及充气效率 稳流试验台使用原理： During the test, the blower (9) is sucked at each valve lift, and the pressure difference ΔΡ in the pressure gauge (9) is adjusted to a certain value by adjusting the blower (9), and the flow rate in the flow meter (8) is read out. , and the speed of the blade anemometer (2) in the tachometer (4), the eddy current ratio or the tumble ratio R can be obtained, and the charging efficiency steady flow test bench uses the principle:
稳流试验台上滚流比可以定义为 The tumble ratio on the steady flow test bench can be defined as
Ns{e)Vh N s {e)V h
ΝΧΘ) ( 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 3/秒； 是发动机曲轴转角， 此处可以转换成气门升禾 '主; ΝΧΘ) ( 2) where N s (is the speed of the blade anemometer under a certain valve lift, dimension is rev / min; is the volume of gas under a certain valve lift: the outline is 3 / sec; is the engine crankshaft Corner, here can be converted into a valve lifter 'main;
QM ( 3) 式中 。是理论进气速度， c ：纲为米 /秒； △；?是流量计中的压差； 是
进气门气门座面积。 进气系统的性能指标需要对滚流比、 充气效率进行积分， 得到进气过 程的平均滚流比， 以及平均充气效率， 作为衡量进气系统性能的指标。 平均滚流比定义为 QM (3) where. Is the theoretical intake speed, c : the outline is m / s; △;? is the pressure difference in the flow meter; Intake valve seat area. The performance index of the intake system needs to integrate the tumble ratio and the charging efficiency, obtain the average tumble ratio of the intake process, and the average charging efficiency, as an indicator to measure the performance of the intake system. The average tumble ratio is defined as
1 . „ λ . -„ 1. „ λ . -„
R — sm fc' H—— sm 26' άθ ( 4) R — sm fc' H—— sm 26' άθ ( 4)
2 4 twenty four
考虑到压缩比和充气效率的影响， 经过 正的平均滚流比为 Taking into account the effects of compression ratio and aeration efficiency, the positive average tumble ratio is
平均充气效率为
该装置能够测量发动机汽缸内滚流运动， 以及滚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 The device is capable of measuring the tumble motion of the engine cylinder and the charging efficiency of the tumble air 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是发动机汽缸内滚流运动模式示意图。 图中， 5滚流运动方向、 12活塞、 13汽缸、 14排气门、 15进气门、 16进气道。 Figure 1 is a schematic diagram of the engine tumble motion mode. In the figure, 5 tumble motion directions, 12 pistons, 13 cylinders, 14 exhaust valves, 15 intake valves, 16 intake ports.
图 2是测量发动机滚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滚流排气管、 4转速表、 5滚流运动方向、 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、 20连接管道。 Figure 2 is a layout diagram of a steady flow test rig measuring the performance of an engine tumble intake system. In the figure, 1 secondary regulator, 2 blade anemometer, 3 tumble exhaust pipe, 4 tachometer, 5 tumble motion direction, 6 analog cylinder, 7 pressure gauge, 8 flowmeter, 9 blower, 10 regulator Box, 11 exhaust ducts, 20 connecting pipes.
图 3是测量发动机滚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滚流排气管、 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、 20连接管道。 Figure 3 is a layout diagram of a specific embodiment of a steady flow test bench for measuring the performance of an engine tumble intake system. In the figure, 1 secondary regulator, 2 blade anemometer, 3 tumble exhaust pipe, 4 tachometer, 6 analog cylinder, 7 pressure gauge, 8 flowmeter, 9 blower, 10 surge tank, 11 exhaust passage , 15 intake valves, 16 intake ports, 17 cylinder heads, 18 cylinder head positioning system, 19 quartz windows, 20 connecting pipes.
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滚流进气系统的性能的稳 流试验台的结构和原理。 图 3是测量发动机滚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滚 流运动， 必须把一个叶片式风速仪 （2) 放在滚流排气管 （3) 中， 测量滚流旋转运动方向 (5) 上的转速。 滚流排气管 （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。 滚流排气管 （3) 中心轴线与模拟汽缸中心轴线垂直， 安装在模拟汽缸 （6) 沿轴 线方向的下部， 目的是模拟进气终了时刻的滚流运动。 滚流排气管中的叶片风速仪 （2) 由气流带动其旋转。 滚流排气管 （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， 以记录叶片风速仪以的转速。 The structure and principle of a steady flow test rig for measuring the performance of an engine tumble intake system proposed by the present invention is further illustrated in a specific embodiment. Figure 3 is a concrete implementation of a steady flow test bench for measuring the performance of an engine tumble air intake system. Plan layout. 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 the large-scale tumble motion in the cylinder, a vane anemometer (2) must be placed in the tumble exhaust pipe (3) to measure the rotational speed in the direction of the tumble motion (5). The tumble exhaust pipe (3) is a cylindrical thin-walled pipe with a diameter of two-thirds of the diameter of the simulated cylinder (6). The center axis of the tumble exhaust pipe (3) is perpendicular to the central axis of the simulated cylinder and is mounted on the lower part of the simulated cylinder (6) along the axial direction in order to simulate the tumble motion of the end of the intake air. The blade anemometer (2) in the tumble exhaust pipe is rotated by the air flow. There is a small quartz window (19) on the tumble exhaust pipe (3). The photoelectric tachometer on the tachometer (4) aligns the photoelectric sensor on the positive vane anemometer (2) through the quartz window (19) to record the rotational speed of the vane anemometer.
滚流排气管 （3) 通过一个连接管道 （20) 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 tumble exhaust pipe (3) is connected to a secondary surge tank (1) through a connecting pipe (20), which is a rectangular-shaped cavity that can reduce the pulsation of the intake air flow. The secondary regulator (1) is connected to the exhaust duct (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 （16) 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 （2) 转速， 按照前面的公式 （5) 和 （6) 即可取得进气系统的涡滚流比 R， 以 及充气效率 。 During the test, at each valve lift, the intake valve (15) is fixed in position, allowing the blower (9) to draw air, and the air flow enters through the intake port (16) into the analog cylinder (6). Adjust the speed of the blower (9), adjust the intake air quantity, keep the pressure difference ΔΡ in the pressure gauge (7) at a certain value, read the flow rate in the flow meter (8) and the blade anemometer in the tachometer (4) (2) Speed, according to the above formulas (5) and (6), the vortex flow ratio R of the intake system and the charging efficiency can be obtained.
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滚流排气管 3 rolling exhaust pipe
4转速表 4 tachometer
5滚流运动方向 5 tumble motion direction
6模拟汽缸 6 analog cylinder
7压力计
鼓风机 稳压箱 排气道 活塞 7 pressure gauge Blower regulator tank exhaust 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 连接管道
Exhaust valve Intake valve Intake port Cylinder head Cylinder head positioning system Quartz window Connecting pipe
Claims
1. 一种测量发动机滚流进气系统的性能的稳流试验台， 其特征是， 包括一个模拟汽缸 （6)、 一个滚流排气管 （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： A steady flow test rig for measuring the performance of an engine tumble intake system, comprising: an analog cylinder (6), a tumble 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) ) 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) 的滚流排气管 （3); The analog cylinder (6) is connected to a tumble exhaust pipe (3) with a vane anemometer (2) inside;
滚流排气管 （3) 通过连接管道 （20) 连接到一个二级稳压箱 （1 ); The tumble exhaust pipe (3) is connected to a secondary voltage regulator box (1) through a connecting pipe (20);
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 ) 的壁面上安装压力计 （7) 和流量计 （8)， 再接到另一个稳压箱 （10)。 A pressure gauge (7) and a flow meter (8) are installed on the wall of the exhaust passage (11), and then connected to another surge tank (10).
2. 根据权利要求 1所述的测量发动机滚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 tumble 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所述的测量发动机滚流进气系统的性能的稳流试验台， 其特征在于， 所述 的滚流排气管 （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， 其 中心轴线与模拟气缸 （6) 的轴心轴线垂直， 安装在模拟汽缸 （6) 的侧面下放的部位。
3. The steady flow test bench for measuring the performance of an engine tumble air intake system according to claim 1, wherein the tumble exhaust pipe (3) has the shape of a cylindrical thin-walled pipe, and has a diameter of Two-thirds of the diameter of the simulated cylinder (6), whose central axis is perpendicular to the axis of the analog cylinder (6), is mounted on the side of the simulated cylinder (6).
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| PCT/CN2012/085260 WO2014079059A1 (en) | 2012-11-26 | 2012-11-26 | Steady-flow test station for measuring performance of engine tumble intake system |
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| PCT/CN2012/085260 WO2014079059A1 (en) | 2012-11-26 | 2012-11-26 | Steady-flow test station for measuring performance of engine tumble intake system |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1092969A2 (en) * | 1999-10-15 | 2001-04-18 | Volkswagen Aktiengesellschaft | Method for determining the tumble number of a combustion engine |
| 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 |
-
2012
- 2012-11-26 WO PCT/CN2012/085260 patent/WO2014079059A1/en active Application Filing
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1092969A2 (en) * | 1999-10-15 | 2001-04-18 | Volkswagen Aktiengesellschaft | Method for determining the tumble number of a combustion engine |
| 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 |
Non-Patent Citations (2)
| Title |
|---|
| LIU, SHULIANG ET AL.: "Prediction of Tumble Speed in Cylinder of Spark Ignition Engines", TRANSACTIONS OF CSICE, vol. 16, no. 2, June 1998 (1998-06-01), pages 161 - 167 * |
| U, MING ET AL.: "Investigation of Tumble Intake System of 2-Valve S. I. Engine on a Steady low-Rig", JOURNAL OF COMBUSTION SCIENCE AND TECHNOLOGY, vol. 2, no. 3, August 1996 (1996-08-01), pages 270 - 278 * |
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