KR20090120180A - Injector correcting device and injector test equipment comprising injector correcting device - Google Patents

Abstract

PURPOSE: An injector calibrating device and a testing device with the same are provided to objectively evaluate abnormality of an injector with naked eyes of a user. CONSTITUTION: A testing device comprises a fuel inlet(30), an injector measuring unit(50) and an injector calibrating device(70). The fuel inlet supplies the fuel to the injector measuring unit and is equipped in a main body(10). The injector measuring unit measures the fuel returned or sprayed from an injector(100). The injector calibrating device, concave type, mounts the injector body, amends spray state of the injector body, and has a body installing unit.

Description

INJECTOR CORRECTING DEVICE AND INJECTOR TEST EQUIPMENT COMPRISING INJECTOR CORRECTING DEVICE}

The present invention relates to an injector testing apparatus including an injector correction apparatus and an injector correction apparatus, and more particularly, an injector correction apparatus and an injector correction apparatus capable of inspecting and correcting an injector which is installed in a common rail diesel engine to inject fuel. The present invention relates to an injector testing apparatus having a device.

Recent diesel engines are difficult to cause any obstacles to the injection function of the injector in order to improve fuel economy and exhaust performance as well as to reduce efficiency of intake volume due to vaporization of fuel.

The internal combustion engine of a diesel vehicle is driven by an internal combustion engine, in which fuel filtered by a fuel filter is driven by a powerful fuel pump to maintain a strong fuel pressure and flows into a common rail which is a fuel distribution assembly and is injected into a combustion chamber through an injector.

Therefore, the injector must maintain its function at all times, and if a problem occurs in its own function, serious impediments to the operation of the internal combustion engine are caused.

For the same reason as above, the inspection of the injector was required to have a high degree of precision and the occasional inspection, but conventionally, the function of the injector and means for objectively confirming the injector were not provided at all.

Therefore, even if the problem itself is unknown or a problem is judged, it is impossible to check it, so inevitably entrusted to the original manufacturer or replaced the entire injector had a problem that causes excessive cost and time loss.

Therefore, even if it is suspected that there is a problem with the injector, it is very difficult to find the corresponding injector, and there is a problem that even the injector which is not necessary to be replaced is replaced in batches because it is not known how much there is more.

The present invention has been proposed in order to solve the problems of the prior art as described above, is easy to separate the defective injector is mounted on the injector correction apparatus provided in the injector performance test apparatus, the naked eye injection state of the injector body Injector compensator and injector compensator to check, clean, and recheck after washing, to prevent unnecessary parts replacement and recycling of parts, and to general maintenance technicians to easily check and calibrate injector performance. It is an object to provide an injector test apparatus provided.

An object of the present invention is to directly check the precise measurement of the injector injection performance, so that an objective evaluation of the injector abnormality can be made.

Injector test apparatus having an injector correction apparatus according to the present invention for achieving the above object is provided with a fuel injection unit for supplying fuel to the injector measuring unit; An injector measuring unit measuring fuel injected or returned from the injector; The injector body provided in the injector is characterized in that it comprises an injector correction device for checking and correcting the injection state of the injector body.

The injector correction device is formed in a concave shape, the body mounting portion is installed inward, the lower body is formed through the connecting member through hole connecting member connected to the body mounting portion installed inwardly; An upper body installed above the lower body; Characterized in that it consists of a lower body to be installed to the inner side of the lower body, and an upper body to be coupled to the upper portion of the lower body to fix the injector body inserted into the lower body.

Wherein the lower retainer is a plurality of lower retainer bolt grooves formed to be fastened to the plurality of lower retainer bolts concentrically located on the outer periphery of the upper surface; An injector body insertion portion in which a first barrier is formed such that the injector body is inserted and seated therein; A connection member fastening portion formed with a second barrier portion to fasten the connection member from the outside; Characterized in that the flow guide space formed between the injector body insertion portion and the connecting member fastening portion is formed.

Wherein the upper retainer is passed through receiving the head portion of the plurality of lower retainer bolts fastened to the lower retainer, a plurality of guide grooves are formed to be fixed to the lower retainer while rotating in the circumferential direction; Located in the upper portion of the injector body seated on the nozzle insertion portion, characterized in that the central through-hole is formed so that the fuel can be ejected from the injector body.

The injector test apparatus further comprises a nozzle removing unit, wherein the nozzle removing unit has a rectangular shape and is fixed to the main body; A coupling part protruding upward from both sides of the fixing part; A rectangular support part rotatably connected to the coupling part by a pivot part; A side portion fixed to one side of the support portion and having a stopper protruding upward of the support portion; An end portion fixed to the end of the support portion opposite to the side portion and provided with a handling bolt for preventing longitudinal movement of the injector; A first support part fixed to an upper surface of the support part and having a first support body bent in a concave shape, and a cylindrical member rotatably installed about a pivot axis in a concave interior of the first support body; It is characterized in that it comprises a second support portion having a concave support and spaced apart from the first support portion rotatably installed to the upper portion of the support.

On the other hand, the injector correction device according to the present invention is formed in a concave shape is provided with a body installation portion inward, the lower body is formed with a connection member through hole through which the connection member for sending fuel to the body installation portion; An upper body detachably installed at an upper portion of the lower body; It is installed to the inside of the lower body, characterized in that it comprises a lower body and the body installation portion consisting of the upper retainer coupled to the upper portion of the lower retainer to fix the injector body inserted into the lower retainer. .

Wherein the lower retainer is a plurality of lower retainer bolt grooves formed to be fastened to the plurality of lower retainer bolts concentrically located on the outer periphery of the upper surface; A nozzle insertion portion in which a first barrier portion is formed so that the injector body is inserted and seated therein; A connection member fastening portion formed with a second barrier portion to fasten the connection member from the outside; Characterized in that the flow guide space formed between the nozzle insertion portion and the connecting member fastening portion.

The upper correction portion is passed through receiving the head portion of the plurality of lower correction bolts fastened to the lower correction portion, a plurality of guide grooves formed to be fixed to the lower correction portion while rotating in the circumferential direction; Located in the upper portion of the injector body seated on the nozzle insertion portion, characterized in that the central through-hole provided to eject the fuel from the injector body is formed.

The injector test apparatus including the injector correction device and the injector correction device according to the present invention as described above has a predetermined evaluation operation such as abnormal operation of the injector 100, which is a fuel injection device of a common rail diesel engine, injection state, and the injection amount thereof. This can be made easily, and it is possible to easily separate the defective injector 100 so that deformation due to external physical force does not occur, further cleaning the injector body 105 removed from the injector compensator 70 And the injection condition can be visually rechecked to prevent unnecessary parts replacement and recycling, thereby eliminating economic waste and minimizing loss of working time to improve productivity as well as to optimize the common rail diesel engine. The effect is that you can always keep it.

Hereinafter, a preferred embodiment of an injector test apparatus including an injector correction apparatus and an injector correction apparatus according to the present invention will be described in detail with reference to the accompanying drawings.

Figure 1 schematically shows an injector test apparatus according to the present invention, Figure 2 is a perspective view showing the injector correction apparatus according to the present invention, Figure 3 is an upper body and the lower body of the injector correction apparatus according to the present invention 4 is a perspective view and a cross-sectional view showing a body mounting portion of the injector correction apparatus according to the present invention, Figure 5 is a perspective view showing a modified example of the body mounting portion of the injector correction apparatus according to the invention and 6 is a perspective view showing the combination of the injector body, the body mounting portion and the connecting member according to the present invention, Figure 7 is a perspective view showing a nozzle removal unit provided in the injector test apparatus of the present invention, Figure 8 is 7 is a perspective view illustrating before and after separation of the injector mounted on the nozzle removing unit illustrated in FIG. 7.

As shown in FIG. 1, the injector testing apparatus 1 according to the present invention includes a fuel injection unit 30, an injector measuring unit 50, an injector correction device 70, and an operation unit 20. It is composed. In addition, the injector body from the injector may further include a nozzle remover 200 to be easily assembled, assembled. In FIG. 1, reference numeral 10 denotes a main body, and the main body 10 includes a fuel injection unit 30, an injector measuring unit 50, an injector correction device 70, and an operation unit 20. It acts as a support, which is preferably formed of steel such as steel.

In the above, the fuel injection unit 30 serves to supply the fuel stored in the fuel tank 31 to the injector measuring unit 50, is provided in the main body 10 as shown in FIG. A fuel tank 31 for storing fuel, a driving pump 33 for pumping the fuel of the fuel tank 31 at high pressure, a driving motor 35 for driving the driving pump 33, and the driving pump A fuel filter 37 for filtering impurities pumped from 33 to remove impurities, and a regulator 90 for maintaining and supplying the delivery pressure of the fuel. The fuel filter 37 may be installed between the fuel tank 31 and the driving pump 33.

The regulator 90 may also function to feed back excess fuel to the fuel tank 31. The regulator 90 sends the fuel supplied by the driving pump 33 to the injector 100, or separates and removes the fuel from the injector 100 that is determined to be defective, and sends the fuel to the injector correction device 70. Do it.

In the above, the injector measuring unit 50, as shown in Figure 1, the mounting portion 57, the injector 100 is installed, the lower part and the injector 100 of the injector 100 provided in the mounting portion 57 The mass cylinder 55 is installed directly under the injector return line 53 connected to the injector 100 and the mass flow rate discharged through the injector return line 53 is measured. Two mass cylinders 55 are installed to test one injector 100. The installation of two mass cylinders 55 for each injector 100 is for more accurate measurement, but only one mass cylinder 55 is installed directly under the injector 100 to be injected from the injector 100. It is possible to confirm the injection state of the injector 100 by measuring the fuel, and is not necessarily limited to providing two mass cylinders 55. When one mass cylinder 55 is installed for each injector 100, the injector return line 53 is connected to the fuel tank 31.

In the case of an injector test apparatus that can be mounted and tested with five injectors 100, for example, as shown in FIG. 1, ten mounting holes (not shown) are formed in the mounting portion 57 up and down. Five of the ten through holes are provided with the injector 100. The injector 100 is inserted into the through hole of the mounting portion 57, and the screw is inserted into a screw hole (not shown) communicating with the through hole to the side of the through hole to support the injector 100 from the side. It is possible to install fixed to the through hole. The mass cylinder 100 for measuring the fuel injected from the injector 100 is fixed to the lower portion of the through hole where each injector 100 is installed. As shown in FIG. 1, the injector return line 53 connected to the injector 100 is connected to the through hole next to the through hole in which the injector 100 is installed, and the injector return line below the through hole connected to the injector return line 53 ( A mass cylinder 55 for measuring the fuel recovered through 53 is installed. It is possible to first insert the mass cylinder 55 from the upper portion of the through hole formed in the mounting portion 57, install the injector 100 in each through hole, and connect the injector return line 53.

In FIG. 1, reference numeral 59 denotes a recovery means. The recovery means 59 forms a through hole at the lower end of the mass cylinder 55 and connects the through hole 55 and the fuel tank 31. It is possible to recover the fuel of each of the mass cylinders 55 to the fuel tank 31 after performing the injector 100 injection test. The recovery means 59 is a pipe (not shown) connecting the through-hole (not shown) formed at the lower end of the mass cylinder 55 and the fuel tank 31, and is provided in the pipe to open and close the pipe It may consist of a valve (not shown).

One of the plurality of injectors 100 mounted on the mounting unit 57 is a reference sample for normal operation, and it is used as a reference for determining whether there is an abnormal operation of the plurality of injectors 100 except for this. desirable. In addition, it is possible to install a safety cover (not shown) to protect the operator from accidents caused by high pressure inside the main body 10.

The injector correction device 70 mounts the injector body 105 removed from the injector 100 that is determined to be defective according to the amount of fuel measured by the mass cylinder 55 of the injector measuring unit 50, and thus the injector body 105. It is a device for checking and correcting the injection state of the), and can be installed in the main body 10 as shown in FIG. 1, but is not limited thereto, and may be provided as a separate device.

As shown in FIG. 2, the injector correction device 70 according to the present invention includes a lower body 130, an upper body 150, and an injector body 105, which are installed inside the lower body 130. It is configured to include a body installation unit 170. A solenoid valve (not shown) may be installed in the injector compensator 70 to control the supply of fuel sent from the regulator 90 according to the command signal of the operation unit 20. It is also possible to provide fuel directly from the pump, without having to pass the regulator 90 by having a separate pump in the above.

2 and 3, the lower body 130 is a concave shape in which the body mounting portion 170 is installed inward, and the inner side between the top and bottom surfaces (not shown) of the lower body 130. The lower body engaging jaw 111 is formed along the circumference. The cross-sectional shape of the lower body locking jaw 111 may be a concave groove shape or may be formed as a jaw surface as shown in FIG. 3. The upper body 150 seated on the lower body locking jaw 111 is bolted between the upper surface of the lower body 130 and the lower body locking jaw 111 so as to be fixed to the lower body 130. The lower body through hole 113 is formed. The plurality of lower body through-holes 113 prevents the upper body 150 from being separated from the lower body 130 by fuel injected at a high pressure in the injector body 105 to promote safety of the worker under test. . In addition, the connection member through-hole 121 is formed so that the connection member 120 coupled to the body installation unit 170 passes. The connecting member through hole 121 may be formed on the outer side surface of the lower body 130 as shown in FIG. 2 or may be formed on the bottom surface according to a modified example of the body mounting unit 170 shown in FIG. 5. The lower body 130 may be made of steel, such as stainless steel, or a high strength synthetic resin.

The upper body 150 is preferably made of a transparent material so that the inside can be seen with the naked eye, it is inserted into the lower body 130 as shown in Figures 2 and 3 to the lower body engaging jaw 111 It is seated. In the above injector compensator 70 is preferably bolted and fixed to the lower body 130 to prevent separation due to the high pressure inside.

In FIG. 2, reference numeral 151 illustrates a through hole formed in the upper body 150. Since the inside of the injector compensator 70 cannot be accurately observed by the mist of fuel injected at a high pressure, a pump (not shown) is connected to the lower body 130 or the upper body 150 and injected into the inside. It is possible to recover the fuel to the fuel tank 31 by inhaling the fuel mist, the through hole 151 is to facilitate the suction by allowing the outside air to be introduced when inhaling.

As shown in FIG. 2, an upper surface of the upper body 150 includes a cam body 153 that can be opened and closed. The cam body 153 is also preferably formed of a transparent material in order to easily observe the spraying state. The contact surface of the cam body 153 seated on the upper surface of the upper body 150 in order to prevent the separation due to the high pressure inside the injector correction device 70 is a rubber that is strongly compressive to be compressed to the upper body 150 It may be provided with an elastic material such as.

The body installation unit 170 is installed on the bottom surface of the lower body 130, as shown in Figure 2, and consists of a lower correction unit 180 and the upper correction unit 190. It is possible to fix the bottom surface of the lower body 130 by forming a screw hole in the flange (189) of the lower part fixing unit 180 of the body installation unit 170.

As shown in FIG. 4, the lower compensator 180 has a nozzle insertion hole 183 having a first stepped portion 184 into which the injector body 105 is inserted and seated, and the connection member 120 is connected to the lower beam. The connection member fastening part 185 having the second barrier part 186 to be fastened to the government 180 is formed. In addition, a flow rate guide space 187 for guiding the discharged fuel is formed between the nozzle insertion part 183 and the connection member coupling part 185. One or more screw grooves 181 are formed on the upper surface of the lower correction unit 180, and one or more guide grooves 191 are formed on the upper correction part 190, and the upper beams are fastened with screws 182. It is possible to fix the government 190 to the lower retainer 180.

As shown in FIG. 4, the upper correction part 190 may be formed of a circular plate, and a central through hole 193 may be formed at a central portion thereof. When the injector body 105 is inserted into the nozzle insertion unit 183 of the lower compensator 180, and the upper compensator 190 is coupled to the upper part, the injection nozzle 105a of the injector body 105 is the upper part. The upper portion is exposed through the central hole 183 of the correction unit 190. The injection nozzle 105a is injected through the injection nozzle as a fine through-hole.

In the above, the male screw is formed on the upper outer side of the lower retainer 180, and the cylindrical housing extends to one side from the outer diameter surface of the upper retainer 190, and the female screw is formed on the inner side so that the screw 182 is not provided. It is also possible to directly fasten the upper retainer 190 to the lower retainer 180.

One or more guide grooves 191 having a size through which the head of the screw 182 can pass on one side along the circumferential direction to the outside of the central through hole 193 as shown in FIG. ), And the head portion of the screw 182 as a portion through which the head portion of the guide groove 191 of the upper correction portion 190 in a state in which the screw 182 is fastened to the lower correction portion 180. After passing through the upper retainer 190 by rotating, it is also possible to fasten the upper retainer 190 to the lower retainer 180.

5 is a perspective view and a front view showing a modified example of the body mounting portion 170 of the injector correction device 70 according to the present invention. As shown in FIG. 5, the lower compensator 180 has a hollow cylindrical portion 189 and a cylindrical portion 189 having a third step portion 183 inserted therein so that the injector body 105 is inserted and seated therein. Connection member fastening part provided with a second barrier part 186 such that the nozzle insertion part 183 and the connection member 120 having the first barrier part 184 formed thereon are fastened to the lower part fixing part 180. 185 is formed. In addition, a flow guide space 187 for guiding the fuel discharged is provided between the nozzle insertion unit 193 and the connection member coupling unit 185. A plurality of lower retainer bolt grooves 181 are formed concentrically outward from the center of the upper surface of the lower retainer 180 so that the plurality of lower retainer bolts 182 are coupled to each other. The upper retainer 190 passes through the head portions of the plurality of lower retainer bolts 182 protruding and fastened to the lower retainer 180, and is circumferentially from the center of the upper retainer 190. A plurality of guide grooves 191 are formed to fix the upper compensator 190 to the lower compensator 180 while rotating as described above. In addition, it is positioned above the injector body 105 seated on the nozzle insertion unit 183, the injector body 105 is fixed, and the discharged fuel is ejected to the upper body 150 of the injector compensator 70. The central groove 193 is formed to be. The cylindrical fixed compression unit 195 for fixing the injector body 105 seated on the cylindrical portion 189 integrally with the upper end fixing unit 190 is provided.

Contrary to that shown in FIG. 6, the injector body 105 is sprayed as the injection nozzle 105a of the injector body 105 is directed toward the bottom surface of the injector compensator 70 when flushing, thereby sending high pressure fuel to the injection nozzle. Clogging the nozzle or removing impurities such as carbon (CARBON) attached around the injection nozzle. In addition, the injector body 105, in which impurities are removed as described above, is mounted upward as shown in FIG. 6 to inject the high-pressure delivered fuel from the regulator 90 to inject the injection nozzle of the injector body 105. In the injection state can be visually confirmed through the upper body 150 of the injector correction device 70 made of a transparent material.

In the above, the operation unit 20 is configured to set the pressure and the injection time of the injector 100, and input an operation command, as shown in Figure 1, a button for inputting a command, a gauge, And a display unit.

The nozzle remover 200 provided in the injector test apparatus according to the present invention includes a fixing part 201 as shown in FIGS. 7 and 8; Support 270; First support 280; It is composed of a second support (290).

In the above, the fixing portion 201 has a rectangular shape, the coupling portion 210 protruding upward from both sides of the fixing portion 201 is provided. In addition, the coupling part 210 located at both sides is provided with a pivot part 230 for rotatably connecting the support part 270.

In the above, the support portion 270 has a rectangular shape, is positioned at a predetermined interval on the upper side of the fixing portion 201, coupled to the coupling portion 210 by the pivot portion 230, one side moves up and down. As shown in FIGS. 7 and 8, the side surface in which the injector 100 is mounted in the axial direction is fixed to the coupling portion 210 and has a side portion 250 protruding upward from the coupling portion 210. The stopper 251 is installed to hold the injector 100 moved in the longitudinal direction thereof. In addition, at the end of the supporting portion 270 opposite to the side part 250, the mounting reference axis AA ′ of the injector 100 is checked, and the injector 100 is moved from A 'to A'. The distal end 260 is provided with a handling bolt 261 to prevent.

In the above, the first support portion 280 is fixed to the upper surface of the support portion 270 and is coupled to the interior of the first support body 283 and the first support body 283 bent in a concave shape, the center of gravity It is provided with a cylindrical member 285 corresponding to the mounting reference axis (AA '). The cylindrical member 285 is rotatably provided on the first support body 283 about the pivot shaft 286, such that the injector 100 mounted on the support portion 270 is provided with a mounting reference axis AA ′. Prevents up and down twist to the center.

In the above, the second support portion 290 is provided with a support (291) in a concave shape, rotatably installed in the direction shown by the arrow on the upper surface of the support portion 270, the mounting reference axis (AA ') It prevents the left and right distortion of the injector 100 mounted around the.

In the above, the support portion 270 is coupled to the pivot portion 230, while one side moves up and down while rotating, in order to prevent a direct collision between the support portion 270 and the fixing portion 201, the support portion A damping unit 275 may be further provided on a lower surface of the 270.

As shown in FIG. 8, the injector 100 is inserted into the cylindrical member 285 of the second support part 280 of the nozzle removing unit 200, and the injector 100 and the cylindrical member 285 are integrally rotated. The other side of the injector 100 is seated on the concave support 291. When the other side of the injector 100 is seated on the concave support 291, the fastening gripping portion 101 provided on the injector 100 is seated on the concave support 291. In the injector 100 mounted on the support 291, the fastening gripping portion 101 is prevented from rotating by the inside of the support 291. Therefore, only the holding part 105b formed in the injector body 105 can be gripped with another tool and rotated to easily separate the injector body 105 from the injector 100.

Hereinafter, the operation of the injector test apparatus 1 including the injector correcting apparatus 70 and the injector correcting apparatus according to the present invention will be briefly described.

As shown in FIG. 1, after the injector 100 and the mass cylinder 55 are installed, the start button (not shown) of the operation unit 20 is pressed to drive the motor 31 to provide a fuel tank ( The fuel contained in 31 is supplied at a high pressure to each injector 100 via a regulator 90 through a supply line 54. The fuel is injected into the mass cylinder 55 installed under the injector 100 through the injection hole of the injector body 105 provided at the lower end of each injector 100. Part of the supplied fuel is recovered to the mass cylinder 55 installed below the return line 53 through the return line 53. When the experiment is installed as shown in Figure 1, any one of the test injector 100 is installed as a normal injector, the other injector is installed as a test injector.

If the amount of fuel injected from the remaining injector to the mass cylinder 55 provided under the same is equal to the amount of fuel injected into the mass cylinder 55 installed under the normal injector, it is determined to be normal. If the injection nozzle of the test injector is clogged with carbon or the cross-sectional area is reduced, the amount of fuel injected into the mass cylinder 55 installed under the injector is reduced, and the return line 53 is lowered to the lower part of the return line 53. The amount recovered with the mass cylinder 53 installed will increase. Compared to the normal injector to be compared, the amount of fuel injected into the mass cylinder 55 installed below the injector decreases, and the injector increases in the amount recovered by the mass cylinder 53 installed below the return line 53. The injector body 105 is separated from the injector 100 by being attached to the nozzle removing unit 200 shown in FIGS. 7 and 8.

As shown in FIG. 6, the separated injector body 105 is inserted into the nozzle insertion unit 183 of the lower compensator 180 so that the nozzle portion of the injector body 105 faces upward, and the upper compensator 190 is disposed. ) Is fixedly installed on the upper part of the lower retainer 180. When the high pressure fuel is supplied through the connection member 120 in the above-described state, the fuel is injected into the nozzle of the injector body 105 through the flow guide space 187. Since the upper body 150 is made of a transparent material in the present invention, the fuel injected by the injection nozzle can be visually observed.

After observing the state of the injection with the naked eye, the upper compensator 190 is separated, and the injector body 105 is taken out from the insertion unit 183, and the lower compensator is disposed so that the nozzle portion of the injector body 105 faces downward. Reinserted into the nozzle insertion unit 183 of 180 and fixes the upper retainer 190 to the lower retainer 180. When the high pressure fuel is injected through the connecting member 120 in the above state, the fuel is supplied to the injector body 105 in a direction opposite to the fuel supply direction at the time of operation so that foreign substances such as carbon remaining in the injection nozzle are removed. It can be washed and removed.

After the cleaning is completed, the nozzle part 105 of the injector body 105 is inserted back into the nozzle insertion part 183 of the lower part fixing part 180 so as to face upward, and the upper part fixing part 190 is installed on the lower part fixing part 180. ), The fuel injection state after washing is visually checked while supplying a high-pressure fuel through the connection member 120 to determine whether to correct.

Then, the injector body 105 is assembled to the injector 100 again, and is mounted on the test apparatus 1 shown in FIG. 1 to accurately measure whether or not it is normal again.

Figure 1 schematically shows an injector test apparatus according to the present invention.

Figure 2 is a perspective view of the injector correction apparatus according to the present invention.

3 is a cross-sectional view showing the coupling of the upper body and the lower body of the injector correction apparatus according to the present invention.

4 is a perspective view and a cross-sectional view showing a body mounting portion of the injector correction apparatus according to the present invention.

5 is a perspective view and a cross-sectional view showing a modification of the body mounting portion of the injector correction apparatus according to the present invention.

6 is a perspective view showing the coupling of the injector body, the body mounting portion and the connecting member according to the present invention.

7 is a perspective view illustrating a nozzle removing unit provided in the injector test apparatus of the present invention.

8 is a perspective view illustrating before and after separation of the injector mounted on the nozzle removing unit illustrated in FIG. 7.

      * Description of the symbols for the main parts of the drawings *

10: main body 20: operating part

30: fuel injection unit 50: injector measuring unit

70: injector compensator 90: regulator

100: injector 105: injector body

110: solenoid valve 120: connecting member

130: lower body 150: upper body

170: body installation unit 180: lower correction

190: upper correction part 200: fixed part

230: pivot portion 250: side portion

270: support portion 275: damping portion

280: first support portion 290: second support portion

Claims (8)

A fuel injection unit 30 provided in the main body 10 to supply fuel to the injector measuring unit 50; An injector measuring unit (50) for measuring fuel injected or returned from the injector (100); Injector body 105 provided in the injector 100 is equipped with an injector correction device, characterized in that it comprises an injector correction device 70 that can check and correct the injection state of the injector body 105 Injector testing device (1). According to claim 1, wherein the injector correction device 70 is formed in a concave shape, the body installation unit 170 is installed inward, the connection member 120 connected to the body installation unit 170 installed inwards is passed through A lower body 130 having a connection member through-hole 121 formed therein; An upper body 150 installed above the lower body 130; The upper beam is coupled to the upper portion of the lower retainer 180 to fix the lower retainer 180 is installed into the lower body 130 and the injector body 105 inserted into the lower retainer 180. Injector test apparatus having an injector correction device, characterized in that made of a body installation unit 170 made of a government (190). According to claim 2, wherein the lower retainer 180 is a plurality of lower retainer bolt grooves (181) formed to be fastened to the plurality of lower retainer bolts 182 concentrically located on the outer periphery of the upper surface; A nozzle insertion unit 183 in which the first barrier unit 184 is formed to insert and seat the injector body 105; A connection member fastening part 185 formed with a second barrier part 186 to fasten the connection member 120 from the outside; Injector testing apparatus having an injector correction device, characterized in that the flow guide space 187 formed between the nozzle insertion portion 183 and the connection member fastening portion 185 is formed. The lower beam of claim 2, wherein the upper bore 190 receives the heads of the plurality of lower bore bolts 182 fastened to the lower bore 180, and rotates in the circumferential direction. A plurality of guide grooves 191 are formed to be fixed to the government 190; Located in the upper part of the injector body 105 seated on the nozzle insertion unit 183, the injector correction device, characterized in that the central through-hole 193 is formed so that the fuel can be ejected from the injector body 105 Injector testing equipment. According to claim 1, wherein the injector test apparatus further comprises a nozzle stripping unit 200, the nozzle stripping unit 200 has a rectangular shape fixed to the main body 10 and 20; A coupling part 210 protruding upward from both sides of the fixing part 201; A rectangular support part 270 rotatably connected to the coupling part 210 by a pivot part 230; A side portion 250 fixed to a side of the coupling portion 210 by one end of the support portion 270 and having a stopper 251 protruding upward of the support portion 270; An end portion 260 fixed to an end of the support portion 270 opposite to the side portion 250 and provided with a handling bolt 261 for preventing longitudinal movement of the injector 100; A first support body 283 fixed to an upper surface of the support part 270 and bent in a concave shape, and a cylindrical member rotatably installed about a pivot shaft 286 in a concave interior of the first support body 283. A first support portion 280 formed of 285; An injector correction device having a concave support 291 and including a second support 290 spaced apart from the first support 280 so as to be rotatably installed above the support 270. Injector test apparatus having a. The lower body 130 is provided in the concave shape is provided with a body mounting portion 170, the connecting member through-hole 121 through which the connecting member 120 for sending fuel to the body mounting portion 170 is passed and ; An upper body 150 installed above the lower body 130; It is installed to the inside of the lower body 130, the upper portion is coupled to the upper portion of the lower portion of the lower portion (180) to fix the lower portion 180, the injector body 105 inserted into the lower portion (180) Injector correction device characterized in that it comprises a body installation unit 170 consisting of a correction unit 190. According to claim 6, wherein the lower retainer (180) A plurality of lower retainer bolt grooves (181) formed to be fastened to the plurality of lower retainer bolts 182 concentrically located on the outer periphery; A nozzle insertion unit 183 in which the first barrier unit 184 is formed to insert and seat the injector body 105; A connection member fastening part 185 formed with a second barrier part 186 to fasten the connection member 120 from the outside; Injector compensation device, characterized in that the flow guide space 187 formed between the nozzle insertion portion 183 and the connection member fastening portion 185 is formed. 7. The lower beam of claim 6, wherein the upper retainer 190 passes through the head portions of the plurality of lower retainer bolts 182 fastened to the lower retainer 180, and rotates in a circumferential direction. A plurality of guide grooves 191 formed to be fixed to the government 190; An injector correction device, comprising: a central through hole 193 positioned above the injector body 105 seated on the nozzle insertion unit 183 and provided to eject fuel from the injector body 105 .

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