WO2018117400A1 - Apparatus and method for automatically measuring swirl ratio - Google Patents

Abstract

The present invention relates to an apparatus and a method for automatically measuring a swirl ratio, and can provide a more reliable automated measurement method by using the swirl ratio automatic measurement apparatus including a valve lift, a dummy cylinder, a surge tank, a flowrate measuring unit, and a blower, and further can effectively measure a plurality of cylinder heads.

Description

Swirlby automatic measuring equipment and measuring method

The present invention relates to a swirl ratio automatic measuring device and a measuring method, and more particularly, a device for automatically measuring the swirl ratio generated in the intake air flowing from the cylinder head of the engine to the intake port and a swirl ratio measuring method using the same It is about.

The swirl ratio of the intake air flowing from the cylinder head of the engine to the intake port is an important design element directly related to the performance of the engine. If the swirl ratio of each cylinder is not constant in a multi-cylinder engine and a deviation occurs, the performance of the engine is inevitably deteriorated. In particular, due to recent environmental problems, the importance of securing a uniform swirl ratio is increasing in the trend of gradually changing from a diesel engine to a gas engine. In addition, in the design of the product, even if it is designed to the specifications that the manufacturer wants, deviation occurs in each product during the process of production and processing, so it is necessary to measure the swirl ratio precisely as a premise to reduce the deviation at the same time to develop the technology to reduce the deviation. .

As a related art, Korean Patent Application Publication No. 2009-0071901 ("Ceiling head steady flow tester with a continuous valve head change mechanism", 2009.07.02.), Which is a test apparatus for measuring the swirl ratio of a cylinder head, is disclosed. have. As shown in FIG. 1, the method includes a shelf 1, a cap shaft rotating unit 2, an encoder 3, a valve position detecting unit 4, an internal pressure forming unit 5, and a flow meter 6. It is.

However, the conventional measuring equipment as described above does not consider the shape of the actual cylinder head, and it is difficult to effectively measure the swirl ratio of the cylinder. In other words, in order to measure the swirl ratio generated in the cylinder, the equipment must be manually operated. Therefore, stepwise measurement according to the valve lift height of the intake port is difficult. In addition, such a step measurement also requires a long waiting time to stabilize the internal differential pressure, which consumes a lot of work time and labor. In addition, it is difficult to obtain the reliability of the measurement result when measuring based on the configuration, and it is difficult to apply in the actual production line because a separate process is required to collect and process it after all the measurement is finished. Finally, it is difficult to measure each swirl ratio for a plurality of cylinder heads by the above-described method.

[Patent Documents]

(Patent Document 1) Korean Laid-open Patent No. 2009-0071901 ("Cylinder Head Normal Flow Tester with Continuous Valve Head Change Mechanism", 2009.07.02)

The present invention has been made to solve the above problems, it is possible to automatically measure the valve by opening the valve of the cylinder head step by step, to stabilize the differential pressure in the surge tank so that the calculated swirl ratio has the correct value, If the calculated swirl ratio is nonlinear, it is to measure the finer and more, and to provide a swirl ratio automatic measuring device with high accuracy and reproducibility.

Swirl ratio automatic measuring device of the present invention for achieving the above object, the valve 110 to open or close the intake port of the cylinder head 10 and receives the electrical signal from the outside to control the valve 110 A valve lift 100 including a lift control unit 120; It is formed to communicate from one side to the other side, the cylinder head 10 is mounted on one side, the paddle 240 is formed therein is a dummy cylinder 200 that can measure the rotation value by the swirl; Is connected to the other side of the dummy cylinder 200, a pressure sensor or a differential pressure gauge is provided to measure and control the internal pressure or the differential pressure, the surge for discharging the fluid introduced from the dummy cylinder 200 to the blower pipe (20) Tank 300; A flow rate measuring part 400 formed on the blower tube 20 and having a flow meter 410 for measuring a flow rate passing through the blower tube; And a blower 500 connected to the blower tube 20 to transfer the fluid introduced through the valve of the cylinder head 10 to the blower tube 20.

In this case, the valve lift 100 may be provided with a motor and an encoder inside the lift control unit 120 to perform precise control of the valve 110.

In addition, the valve lift 100 further comprises a laser sensor 130 for measuring the length of the valve 110 is lowered, so that the opening and closing level of the port of the cylinder head 10 through the valve 110 can be measured. It can be made, including.

In addition, the swirl ratio automatic measuring method using the swirl ratio automatic measuring device, the valve closing step of closing the intake port of the cylinder head 10 by using the valve (S110); A blower operation step of operating the blower 500; A valve opening step (S130) for opening the valve 110 to a set level through the lift control unit 120; A differential pressure measuring step (S140) of measuring a differential pressure inside the surge tank 300; After determining whether the surge tank 300 is stable at a constant differential pressure, if the internal differential pressure of the surge tank 300 is not stabilized, the RPM of the blower 500 is controlled, and the internal differential pressure of the surge tank 300 is increased. A hydraulic system and a paddle value measuring step of measuring a flow rate of the flow measuring unit 400 and measuring a rotation value of the paddle 240 of the dummy cylinder 200 when it is stabilized; And a swirl ratio calculating step S160 of calculating a swirl ratio based on the values measured through the hydraulic system and the paddle value measuring step S150.

In this case, the swirl ratio automatic measuring method is characterized in that the valve opening step (S130) to perform a swirl ratio calculation step (S160) repeatedly, if the intake port of the cylinder head 10 is opened by a target value The average swirl ratio calculation step (S170) for calculating the average swirl ratio through the swirl ratio derived through the swirl ratio calculation step (S160); may be further included.

The method for automatically measuring swirl ratio may further include an output step S180 of outputting a measured or calculated value after the average swirl ratio calculation step S170.

In addition, the average swirl ratio calculation step (S170) may be characterized in that it is determined whether the swirl ratio derived through the swirl ratio calculation step (S160) is linear.

At this time, the automatic measurement method of the swirl ratio, if there is a section in which the swirl ratio is non-linear in the average swirl ratio calculation step (S170), the interval setting step of checking and setting the section in which the swirl ratio is non-linear (S200); A valve portion sealing step (S210) for partially sealing the intake port of the cylinder head 10 by a set section; A fine opening step (S230) of opening the intake port of the cylinder head (10) by resetting more finely than the set level of the opening step (S130); A hydraulic system and a paddle value measuring step of measuring a flow rate of the flow measuring unit 400 and measuring a rotation value of the paddle 240 of the dummy cylinder 200; And a swirl ratio calculating step (S260) of calculating a swirl ratio based on the values measured through the hydraulic system and the paddle value measuring step (S250). The fine opening step (S230) to the swirl ratio calculation step 260 is repeated until the intake port of the cylinder head 10 is opened, and the valve of the cylinder head 10 is opened by the set section. When the swirl ratio calculation step S260 is performed, the calculated average swirl ratio calculation step 270 of calculating the average swirl ratio of the calculated swirl ratios of the interval-set portion may be further included.

In addition, a plurality of cylinder head swirl ratio automatic measurement method using a swirl ratio automatic measuring device, the cylinder head mounting step of mounting one cylinder head 10 on one side of the dummy cylinder (200); A valve sealing step (S320) of sealing the intake port of the cylinder head (10) by using the valve (110); A blower operation step of operating the blower 500; A valve opening step (S340) of opening the valve 110 to a set level through the lift control unit 120; A differential pressure measuring step (S350) of measuring a differential pressure inside the surge tank 300; After determining whether the surge tank 300 is stable at a constant differential pressure in the differential pressure measuring step S350, if the internal differential pressure of the surge tank 300 is not stabilized, the RPM of the blower 500 is controlled, and the surge tank A valve lift continuous opening step (S360) of continuously opening the valve 110 when the internal differential pressure of 300 is stabilized; In parallel with the continuous opening step (S360), to measure the flow rate of the flow measuring unit 400 and the hydraulic pressure and paddle value measuring step (S370) of measuring the rotation value of the paddle 240 of the dummy cylinder (200) ; Calculating a continuous open swirl ratio measured through the hydraulic system and the paddle value measuring step (S150); And after determining whether there is a cylinder head 10 that has not been measured, if there is a cylinder head 10 to be measured, replacing the cylinder head (S400).

At this time, the plurality of cylinder head swirl ratio automatic measuring method, if the cylinder head 10 to be measured remains, the valve closing step (S320) to the cylinder head replacement step (S400) is repeatedly performed, the cylinder head to be measured further (10) calculating the deviation between the continuous open swirl ratios of the measured plurality of cylinder heads 10 after the continuous open swirl ratio calculating step (S380); And an output step S420 of outputting the measured value and the calculated value.

In addition, the plurality of cylinder head swirl ratio automatic measurement method, after the continuous open swirl ratio calculation step (S380), it is determined whether the valve 110 of the valve lift 100 is opened by the target value, and opened by the target value. If not, the valve lift may be continuously opened (S360) to continuously open swirl ratio calculation step (S380), and may be determined whether there is a cylinder head to be measured any more when the target value is opened.

The swirl ratio automatic measuring device and the measuring method according to the present invention having the above-described configuration open the doors step by step after closing the valve completely, and calculate the swirl ratio at each stage, and calculate the swirl ratio By calculating the average swirl ratio of, more reliable and accurate measurement is possible.

In addition, when the cylinder head is placed on the measuring equipment and the measuring equipment is operated, the time for measuring the cylinder head is significantly shortened because all the steps up to the output are automated.

In addition, it is possible to simultaneously measure a plurality of intake ports provided in one cylinder head, and further provide a method of measuring all of the plurality of cylinder heads so that the swirl ratio deviation between the plurality of cylinder heads can be compared within the shortest time. To be provided.

1 is a perspective view of a steady flow tester of a cylinder head according to the prior art.

2 is a perspective view of a swirl ratio automatic measurement equipment according to an embodiment of the present invention.

3 is a perspective view of a valve lift according to an embodiment of the present invention.

4 is a perspective view of a dummy cylinder according to an embodiment of the present invention.

5 is an internal projection of the dummy cylinder according to an embodiment of the present invention.

6 is a perspective view of a surge tank according to an embodiment of the present invention.

Figure 7 is a perspective view of the flow rate measuring unit provided in the blower tube according to an embodiment of the present invention.

8 is a flow chart for swirl ratio automatic measurement equipment control according to an embodiment of the present invention.

Figure 9 is a block diagram of swirl ratio automatic measurement equipment according to an embodiment of the present invention.

10 is a flow chart according to an embodiment of the inventor's swirl ratio automatic measurement method.

11 is a flow chart according to another embodiment of the inventor's swirl rate automatic measurement method.

12 is a flow chart according to an embodiment of the present invention for measuring a plurality of cylinder head swirl ratio automatic.

Hereinafter, with reference to the accompanying drawings will be described in detail a swirl ratio automatic measuring equipment and measuring method according to an embodiment of the present invention. The drawings introduced below are provided by way of example so that the spirit of the invention to those skilled in the art can fully convey. Accordingly, the present invention is not limited to the drawings presented below and may be embodied in other forms. Also, like reference numerals denote like elements throughout the specification.

At this time, if there is no other definition in the technical terms and scientific terms used, it has a meaning that is commonly understood by those of ordinary skill in the art to which the present invention belongs, and the gist of the present invention is unnecessary in the following description and the accompanying drawings. Descriptions of well-known functions and configurations that may be blurred are omitted.

[Swirlby automatic measuring equipment]

2 is a swirl ratio automatic measuring device of the present invention, Figure 2 is an overall perspective view of the swirl ratio automatic measuring equipment of the present invention. Referring to FIG. 2, the swirl ratio automatic measuring device 1000 of the present invention for measuring the cylinder head 10 includes a valve lift 100, a dummy cylinder 200, a surge tank 300, and a flow measuring unit 400. ) And a blower 500. Each configuration will be described more clearly in FIGS. 3 to 7, and the relationship between each configuration is briefly described through the overall perspective view of FIG. 2.

The valve lift 100 is provided to adjust the amount of opening and closing of the plurality of intake ports formed in the cylinder head 10.

The dummy cylinder 200 may be mounted to one side of the cylinder head 10, the rotation of the fluid (Swirl) of the fluid flowing from the intake port of the cylinder head 10 is adjusted through the valve lift 100 The value can be measured.

The surge tank 300 may be formed on the other side of the dummy cylinder 200, to measure the internal differential pressure to stabilize the equipment as a whole.

The flow rate measuring unit 400 is connected to the surge tank 300 through the blower tube 20, as shown in Figure 2 blower pipe 20 for connecting between the surge tank 300 and the blower 500 It can be formed on.

3 is a swirl ratio automatic measuring device of the present invention, Figure 3 is a perspective view of the valve lift of the present invention. Referring to FIG. 3, the valve lift 100 includes a valve 110 for opening or closing a valve of a cylinder head and a lift controller 120 for controlling the valve 110 by receiving an electrical signal from the outside. Can be.

In this case, the cylinder head 10 includes a plurality of intake ports, and the valve 110 opens and closes the first valve 111 for opening and closing one intake valve of the cylinder head and the other intake port of the cylinder head. It may include a second valve 112, and when the cylinder head is actually used, since the swirl is measured through the first valve 111 and the second valve 112, the exhaust port is closed with the exhaust valve By measuring at In addition, the first valve 111 and the second valve 112 may operate as one body to simultaneously open or close the plurality of intake ports formed in the head cylinder.

The lift controller 120 may provide power to control the numerical value at which the valve 110 opens and closes the intake port, and may control the opening / closing amount of the valve 110 itself through a sensor such as an encoder. That is, a motor and an encoder are provided inside the lift controller 120 to enable precise control of the valve 110.

In addition, the valve lift 100 may further include a laser sensor 130 and a coupling 140 as shown in FIG. The laser sensor 130 is a device capable of re-validating whether the length value of the valve 110 is correct through sensing when the motor is controlled by using the encoder information in the lift controller 120. . Through this, if an error occurs, it can be adjusted to the exact opening and closing amount through feedback control. The laser sensor 130 is attached to the lift control unit 120 can be sensed by irradiating a laser to the valve 110. In this case, the laser sensor 130 may be provided in a separate fixing bracket having a “c” shape and may be combined with a lower side of the lift control unit 120. The laser sensor 130 may further include a reflective tape 131 attached to the upper plate of the valve 110 moving up and down. As such, the laser irradiated from the laser sensor 130 is reflected from the reflective tape 131 formed on the upper plate of the valve 110 so that the distance can be measured, and the valve 110 moves up and down. Since it is also associated with the opening and closing level, it is possible to re-verify whether the control of the lift control unit 120 is correct based on this.

In addition, the coupling 140 is a device for transmitting the power of the lift control unit 120 to the valve 110 may be provided between the lift control unit 120 and the valve 110, the lift control unit 120 may further include a reduction gear box.

4 and 5 is a swirl ratio automatic measuring device of the present invention, Figure 4 is a perspective view of the dummy cylinder of the present invention, Figure 5 is an internal projection of the dummy cylinder of the present invention. Referring to FIG. 4, the dummy cylinder 200 may include a first flange 210, a cylinder body 220, and a second flange 230.

The first flange 210 is formed on one side, the bolt groove is formed so that the cylinder head is mounted, and may be formed in a shape corresponding to a portion of the cylinder head, the second flange 230 is formed on the other side the surge tank It is a connection that can be combined with (300).

The cylinder body 220 is formed in communication from one side to the other side, and consists of a tube that can be discharged to the other side the fluid introduced from the cylinder head mounted on one side. In addition, a window 250 may be formed in the cylinder body 220, and an internal rotation value may be measured through a proximity sensor on the outside of the window 250. In order to explain this more clearly, reference is made to FIG. 5.

The dummy cylinder 200 is a transparent cylinder is formed inside the cylinder body 220, so that the inner side can be measured from the outside of the window 250. In addition, the dummy cylinder is formed with the paddle 240, the paddle 240 is rotated by the swirl of the fluid flowing from one side to the other side. In addition, the paddle 240 may be connected to the center shaft 231 of the second flange by a bearing. That is, the paddle center 241 and the center shaft 231 of the second flange are coupled to be rotatable so that the paddle 240 can rotate.

6 is a swirl ratio automatic measuring device of the present invention, Figure 6 is a perspective view of the surge tank of the present invention. Referring to FIG. 6, the surge tank 300 includes a cylinder mounting portion 310 to which a dummy cylinder 200 may be coupled to an upper side, a pipe connection portion 330 and a tank body 320 coupled to a blower tube 20. It can be made, including.

The tank body 320 may include a differential pressure sensor (Diff. Pressure Sensor) for measuring the differential pressure generated in the process that the fluid introduced from the cylinder mounting portion 310 is discharged to the pipe connection 330, or a pressure sensor The pressure inside the tank body 320 may be measured by using a. In this case, the internal fluid of the tank body 320 may be formed to be stabilized through values detected by the differential pressure gauge or the pressure sensor.

7 is a swirl ratio automatic measuring device of the present invention, Figure 7 is a perspective view of the flow rate measuring unit of the present invention. Referring to FIG. 7, the flow rate measuring unit 400 may include a flow meter 410 formed between the first pipe 21 and the second pipe 22 to measure the flow rate of the fluid passing through the pipe. have. In other words, the flow rate on the pipe is measured using a flow meter.

8 and 9 illustrate a system for controlling a swirl ratio automatic measuring device according to the present invention, FIG. 8 is a flowchart illustrating a swirl ratio automatic measuring device control according to an embodiment of the present invention, and FIG. Swirl ratio automatic measurement equipment block diagram according to an embodiment. Referring to FIG. 8, a control method of the aforementioned proximity sensor, flow meter, differential pressure sensor, motor, encoder, and displacement sensor is described. Able to know. The separate control software (Embedded PC) accepts rotational speed, flow rate, pressure and length values and provides them to control blowers and motors. In addition, the control software is connected to the HMI software, the HMI software is provided as a touch panel PC (Touch Panel PC) to facilitate the user's operation.

Referring to FIG. 9, the rotation speed measures a count value of the proximity sensor rotating by the swirl of the paddle 240 in the dummy cylinder 200. In addition, the flow rate value can be seen by measuring the flow rate of the fluid passing through the blower pipe 20 in the flow rate measuring unit 400 formed on the blower pipe 20 through a flow meter. In addition, the pressure value may be made through a differential pressure gauge or a pressure sensor measuring the differential pressure inside the surge tank 300, and when the pressure value is unstable, it can be stabilized by operating the blower 500. Finally, the length value can be known through an encoder attached to the valve lift 100, and can be re-validated by further attaching a laser sensor, which is a displacement sensor, to verify this more accurately. . In this case, the motor, and more specifically, the servo motor, may be controlled through the value of the encoder, and the valve 110 of the valve lift 100 may be controlled by a set value through the encoder. Can open and close.

[Swirl ratio automatic measurement method]

<Example 1>

FIG. 10 is an embodiment of an automatic swirl ratio measuring method of the present invention, and FIG. 10 is a flowchart. Referring to Figure 10, the swirl ratio automatic measuring method of the present invention, valve closing step (S110), blower operation step (S120), valve opening step (S130), surge tank differential pressure measurement step (S140), flow rate value and rotation A value measuring step S150, a swirl ratio calculating step S160, an average swirl ratio calculating step S170, and an output step S180 may be performed. Referring to the swirl ratio automatic measurement equipment of Figures 2 to 9, each step configuration will be described below.

The valve sealing step (S110) is a step of closing the intake port of the cylinder head 10 by using the valve 110 of the valve lift 100. At this time, the cylinder head 10 is coupled to the upper side of the dummy cylinder 200, and since the cylinder head 10 is generally provided with two intake ports, it is sealed using a plurality of valves 110. can do.

The blower operation step (S120) is a step of operating the blower 500 when all the intake ports of the cylinder head 10 are blocked through the valve sealing step S110. In addition, after the blower operation step S120, the intake valve of the cylinder head 10 may be gradually opened through the valve opening step S130.

The valve opening step (S130) may be applied to the open value in real time, it may use a predetermined value. That is, if it is assumed that the valve is fully opened at 30 mm, the valve may be opened at 3 mm intervals, and the target value may be set within 30 mm. The valve opening step S130 may be performed by using a servo motor. 110, it can be immediately confirmed and adjusted by using the encoder (Encoder) and the laser sensor 130.

The surge tank differential pressure measuring step S140 is a step of measuring the differential pressure inside the surge tank 300 through a differential pressure gauge. At this time, it is determined whether the value measured by the differential pressure gauge is stabilized. If the measured value is not stabilized, the differential pressure inside the surge tank 300 may be stabilized by controlling the RPM of the blower 500. Through this, unstable airflow can be suppressed as much as possible to obtain a reliable measurement value.

The hydraulic system and the paddle value measuring step (S150) after determining whether the surge tank 300 is stable at a constant differential pressure, and when the internal differential pressure of the surge tank 300 is stabilized, the flow meter of the flow measuring unit 400 The flow rate of the blower pipe 20 may be measured through a flow meter, and the rotational value of the paddle 240 of the dummy cylinder 200 by swirl may be measured through a proximity sensor. .

The swirl ratio calculating step (S160) is a step of calculating a swirl ratio based on the flow rate value and the rotation value. At this time, after the swirl ratio calculation step (S160), the valve 110 of the valve lift 100 is determined to be open, and if the intake port of the cylinder head 10 is not opened as much as a target value, The valve opening step (S130) to the swirl ratio calculation step (S160) may be repeatedly performed until open.

The average swirl ratio calculation step (S170) calculates an average swirl ratio based on the values of all swirl ratios derived through the swirl ratio calculation step (S160) when the intake port of the cylinder head 10 is opened by a target value. Step. In this case, the average swirl ratio calculation step (S170) may calculate the swirl ratio for each opening level of the valve 110 in an integral form proportional to the corresponding section according to the shape profile of the cam, and at the same time, it may be illustrated as a graph. In addition, the values calculated and shown in this manner may be output to be confirmed from the outside through the output step (S180).

<Example 2>

11 is another embodiment of the swirl ratio automatic measuring method of the present invention, and FIG. 11 is a flowchart. Referring to FIG. 11, the method for automatically measuring the swirl ratio of the present invention may determine whether the swirl ratio derived through the swirl ratio calculation step S160 is linear in the average swirl ratio calculation step S170. At this time, if there is a non-linear section of the swirl ratio, the swirl ratio automatic measurement method of the present invention, the section setting step (S200), valve partial sealing step (S210), valve fine opening step (S230), surge tank differential pressure measuring step (S240 ), The flow rate and rotation value measurement step (S250), swirl ratio calculation step (S260) and the average swirl ratio calculation step (S270) may be further included. At this time, the surge tank differential pressure measuring step (S240) to the average swirl ratio calculation step (S270) is similar to the surge tank differential pressure measuring step (S140) to the average swirl ratio calculation step (S170) of the embodiment, Description is omitted.

In the section setting step S200, a section may be determined by identifying a non-linear section. For example, if the valve opening step (S130) is set so that the valve having a maximum opening of 30 mm is opened at 3 mm intervals, and the nonlinear section appears at 6 mm opening, the section setting step (S200) is a section between 3 mm and 9 mm. Can be set.

The valve partial sealing step S210 may operate the valve 110 of the valve lift 100 to seal the valve 110 to a minimum level of the opening value of the section set in the section setting step S200. .

The fine opening step (S230) may be sequentially opened on the section set in the section setting step (S200), and may be formed to be opened more finely than the previously set interval up to the section maximum value. If the above example continues, the existing preset to open at 3mm intervals is changed to 1mm intervals, it is provided to open sequentially.

The average swirl ratio calculation step (S270) is a step of separately calculating the average value of the finely measured section after the section setting step (S200), through which can increase the reliability of the cylinder head 10, and then manufacture The cylinder head can be induced to solve the problem.

[Method of Automatic Measurement of Multiple Cylinder Head Swirl Ratio]

12 is a plurality of cylinder head swirl ratio automatic measurement method of the present invention, Figure 12 shows a flow chart. Referring to Figure 12, a plurality of cylinder head swirl ratio automatic measurement method of the present invention, the cylinder head mounting step (S310), valve sealing step (S320), blower operation step (S330), valve opening step (S340), differential pressure Measurement step (S350), continuous opening step (S360), hydraulic pressure and paddle value measurement step (S370), continuous open swirl ratio calculation step (S380), and if the cylinder head 10 to be measured replacement of the cylinder head Repeating (S400), and when the measurement of all the cylinder head 10 is completed, it can be provided to the external user through the continuous open swirl ratio deviation calculation step (S410) and output step (S420) of all the cylinder head.

The cylinder head mounting step (S310) is a step of mounting one cylinder head 10 on one side of the dummy cylinder 200.

The valve sealing step (S320) is a step of closing the intake port of the cylinder head 10 by using the valve 110 of the valve lift (100). In this case, the cylinder head 10 is coupled to an upper side of the dummy cylinder 200, and the first valve 111 and the second valve 112 are tested to test a plurality of intake valves of the cylinder head 10. The intake port provided in the cylinder head 10 may be sealed through the valve 110 included therein.

The blower operation step S330 is a step of operating the blower 500 when all the intake ports of the cylinder head 10 are blocked through the valve sealing step S320. In addition, after the blower operation step S330, the intake valve of the cylinder head 10 may be gradually opened through the valve opening step S130.

The valve opening step S340 is a step in which the valve 110 of the valve lift 100 opens only a part of the intake port of the cylinder head 10 while the blower 500 is operated.

The surge tank differential pressure measuring step S350 is a step of measuring the differential pressure inside the surge tank 300 through a differential pressure gauge. At this time, it is determined whether the value measured by the differential pressure gauge is stabilized. If the measured value is not stabilized, the differential pressure inside the surge tank 300 may be stabilized by controlling the RPM of the blower 500. Through this, unstable airflow can be suppressed as much as possible to obtain a reliable measurement value.

In the continuous opening of the valve lift step S360, when the differential pressure inside the surge tank 300 is stabilized in the surge tank differential pressure measuring step S350, the valve 110 of the valve lift 100 is connected to the cylinder head 10. Opening the intake port continuously.

The hydraulic system and the paddle value measuring step S370 may be performed in parallel with the valve lift continuous opening step S360, and may be continuously opened and at the same time, the blower pipe may be formed through a flow meter of the flow measuring unit 400. A flow rate value of 20 may be measured, and a rotation value of the paddle 240 of the dummy cylinder 200 by swirl may be measured through a proximity sensor.

The continuous open swirl ratio calculating step (S380) is a step of calculating a swirl ratio at regular intervals in which the flow rate value and the rotation value continuously change, and the average swirl ratio may be calculated along with the calculation.

After the continuous open swirl ratio calculation step (S380) it can be determined whether there is a cylinder head to be measured further, if there is a cylinder head to be measured further by replacing the cylinder head (S400) to the valve sealing step (S320) to continuous The open swirl ratio calculation step S400 may be repeated. At this time, prior to determining whether the cylinder to be measured any more, the plurality of cylinder head swirl ratio automatic measuring method of the present invention, the valve 110 of the valve lift 100 after the continuous open swirl ratio calculation step (S380) ) Is determined to open as much as the target value, and if it is not opened by the target value, the valve lift is continuously opened (S360) to continuously open swirl ratio calculation step (S380), and when the target value is opened, the measurement is no longer performed. It may be decided to determine if there is a cylinder to perform.

Since there is no longer a cylinder to measure, the swirl ratio automatic measuring method of the present invention through the continuous open swirl ratio deviation calculation step (S410) and the output step (S420) of outputting the cylinder head to measure a plurality of cylinder heads Can be.

As described above, the present invention has been described by specific embodiments such as specific components and the like, but the embodiments are provided to assist in a more general understanding of the present invention, and the present invention is not limited to the above embodiments. For those skilled in the art, various modifications and variations are possible from such description.

Accordingly, the spirit of the present invention should not be limited to the described embodiments, and all claims having equivalent or equivalent modifications to the claims as well as the following claims are intended to be included in the scope of the spirit of the present invention. will be.

[Description of the code]

1000: Swirlby Automatic Measuring Equipment

10: cylinder head 20: blower tube

21: 1st piping 22: 2nd piping

100: valve lift 110: valve

111: first valve 112: second valve

120: lift control unit 130: laser sensor

140: coupling 200: dummy cylinder

210: first flange 220: cylinder body

230: second flange 231: center shaft

240: paddle 241: paddle center

250: Windows 300: Surge Tank

310: cylinder mounting portion 320: tank body

330: pipe connection 400: flow measurement unit

410: flow meter 500: blower

Claims (11)

1. A valve lift (100) including a valve (110) for opening or closing an intake port of the cylinder head (10) and a lift control unit (120) for receiving the electrical signal from the outside to control the valve (110);

   It is formed to communicate from one side to the other side, the cylinder head 10 is mounted on one side, the paddle 240 is formed therein is a dummy cylinder 200 that can measure the rotation value by the swirl;

   Is connected to the other side of the dummy cylinder 200, the differential pressure gauge or pressure sensor is provided to measure and control the internal differential pressure, the surge tank for discharging the fluid introduced from the dummy cylinder 200 to the blower pipe (20) 300);

   A flow rate measuring part 400 formed on the blower tube 20 and having a flow meter 410 for measuring a flow rate passing through the blower tube; And

   A blower (500) connected to the blower pipe (20) to transfer the fluid introduced through the valve of the cylinder head (10) to the blower pipe (20);

   Swirlby automatic measuring equipment comprising a.
2. The method of claim 1, wherein the valve lift 100

   Swirl ratio automatic measurement equipment, characterized in that the lift control unit 120 is provided with a motor and an encoder to precisely control the valve (110).
3. The method of claim 2, wherein the valve lift 100

   Swirl ratio automatic measuring equipment further comprises a laser sensor for measuring the length of the valve 110 is lowered to measure the opening and closing level of the cylinder head (10) port through the valve (110).
4. In the swirl ratio automatic measuring method using the swirl ratio automatic measuring device of any one of claims 1 to 3,

   A valve sealing step (S110) of closing the intake port of the cylinder head (10) by using the valve (110);

   A blower operation step of operating the blower 500;

   A valve opening step (S130) for opening the valve 110 to a set level through the lift control unit 120;

   A differential pressure measuring step (S140) of measuring a differential pressure inside the surge tank 300;

   After determining whether the surge tank 300 is stable at a constant differential pressure,

   When the internal pressure difference of the surge tank 300 is not stabilized, the RPM of the blower 500 is controlled.

   When the internal pressure difference of the surge tank 300 is stabilized, the hydraulic system and the paddle value measuring step of measuring the flow rate of the flow measuring unit 400 and measuring the rotation value of the paddle 240 of the dummy cylinder 200 (S150). ); And

   A swirl ratio calculating step (S160) of calculating a swirl ratio based on the values measured through the hydraulic system and the paddle value measuring step (S150);

   Swirl ratio automatic measurement method comprising a.
5. The method of claim 4, wherein the automatic measurement of swirl ratio

   It characterized in that to perform the valve opening step (S130) to swirl ratio calculation step (S160) repeatedly,

   An average swirl ratio calculation step (S170) of calculating an average swirl ratio through swirl ratios derived through the swirl ratio calculation step (S160) when the intake port of the cylinder head 10 is opened by a target value;

   Swirl ratio automatic measurement method further including.
6. The method of claim 5, wherein the automatic measurement of swirl ratio

   After the average swirl ratio calculation step (S170),

   An output step S180 of outputting a measured or calculated value;

   Swirl ratio automatic measurement method further including.
7. The method of claim 5, wherein the average swirl ratio calculation step (S170),

   Swirl ratio automatic measurement method characterized in that it is determined whether the swirl ratio derived by the swirl ratio calculation step (S160) to form a linear.
8. The method of claim 7, wherein the swirl ratio automatic measurement method

   If there is a section in which the swirl ratio is nonlinear in the average swirl ratio calculation step (S170),

   A section setting step (S200) of checking and setting a section in which the swirl ratio is nonlinear;

   A valve portion sealing step (S210) for partially sealing the intake port of the cylinder head 10 by a set section;

   A fine opening step (S230) of opening the intake port of the cylinder head (10) by resetting more finely than the set level of the opening step (S130);

   A hydraulic system and a paddle value measuring step of measuring a flow rate of the flow measuring unit 400 and measuring a rotation value of the paddle 240 of the dummy cylinder 200; And

   A swirl ratio calculating step (S260) of calculating a swirl ratio based on values measured through the hydraulic system and the paddle value measuring step (S250);

   It is made to include more

   The swirl ratio automatic measuring method is characterized in that for repeating the valve fine opening step (S230) to swirl ratio calculation step 260 until the intake port of the cylinder head 10 in the set interval,

   When the valve of the cylinder head 10 is opened by a set section,

   After the swirl ratio calculation step (S260),

   A calculated average swirl ratio calculation step 270 of calculating an average swirl ratio of the calculated swirl ratios of the sectioned portion;

   Swirl ratio automatic measurement method further including.
9. In the multiple cylinder head swirl ratio automatic measuring method using the swirl ratio automatic measuring apparatus of any one of Claims 1-3,

   A cylinder head mounting step (S310) of mounting one cylinder head 10 on one side of the dummy cylinder 200;

   A valve sealing step (S320) of sealing the intake port of the cylinder head (10) by using the valve (110);

   A blower operation step of operating the blower 500;

   A valve opening step (S340) of opening the valve 110 to a set level through the lift control unit 120;

   A differential pressure measuring step (S350) of measuring a differential pressure inside the surge tank 300;

   After determining whether the surge tank 300 is stable at a constant differential pressure in the differential pressure measuring step (S350),

   When the internal pressure difference of the surge tank 300 is not stabilized, the RPM of the blower 500 is controlled.

   A valve lift continuous opening step (S360) of continuously opening the valve 110 when the pressure difference inside the surge tank 300 is stabilized;

   In parallel with the continuous opening step (S360), to measure the flow rate of the flow measuring unit 400 and the hydraulic pressure and paddle value measuring step (S370) of measuring the rotation value of the paddle 240 of the dummy cylinder (200) ;

   Calculating a continuous open swirl ratio measured through the hydraulic system and the paddle value measuring step (S150); And

   After determining whether there is a cylinder head 10 that has not been measured, replacing the cylinder head if there is a cylinder head 10 to be measured (S400);

   A plurality of cylinder head automatic measurement method comprising a.
10. The method of claim 9, wherein the plurality of cylinder head swirl ratio automatic measurement methods

    If the cylinder head 10 to be measured remains, the valve sealing step S320 to the cylinder head replacement step S400 are repeatedly performed.

    If there is no cylinder head 10 to measure any more, after the continuous open swirl ratio calculation step (S380),

    Calculating a deviation between successive open swirl ratios of the measured plurality of cylinder heads 10 (410); And

    An output step (S420) of outputting the measured value and the calculated value;

    A plurality of cylinder head swirl ratio automatic measurement method further comprising.
11. The method of claim 9, wherein the plurality of cylinder head swirl ratio automatic measurement methods

    After the continuous open swirl ratio calculation step (S380),

    It is determined whether the valve 110 of the valve lift 100 is opened by a target value,

    When not opening as much as the target value, the valve lift is continuously opened (S360) to continuously open swirl ratio calculation step (S380),

    And a cylinder head swirl ratio automatic measurement method for determining whether there is a cylinder head to be measured any more when the target value is opened.

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