Ejector test adapter and ejector test system

Abstract

The present application relates to the field of injector testing, in particular to an injector test adapter (1) adapted to position an injector (2) relative to an injection test unit (3), the injector test adapter (1) comprising an inlet (11), an orifice (12) and a channel (L) extending from the inlet (11) to the orifice (12), the channel (L) being configured to allow the injector (2) to be inserted through the inlet (11) to move into a test position, in the test position, the exit port (21) of the injector (2) is adjacent to the orifice (12) through which the fuel fluid (F) ejected from the exit port (21) flows into the injection test unit (3), and the orifice (12) has a lower flow capacity than the exit port (21). The utility model further relates to a corresponding injector testing system (100). The injector test adapter and the injector test system have the advantages of being simple in structure, convenient to operate, reliable in test result, cost-saving and the like.

Description

Technical Field

[0001] The present application relates to the field of injector testing, and in particular to an injector testing adapter and an injector testing system. Background Art

[0002] The injector is an important component of the engine, which is used to controllably inject the fuel fluid into the combustion chamber with specific operating parameters (including pressure, flow rate, etc.). Since the injection performance of the injector directly affects the power output capacity of the engine, the injection performance of the injector needs to be tested or measured before it is put into use.

[0003] At present, natural gas injectors and corresponding engines using natural gas as fuel fluid have been developed. In order to realize the test of natural gas injectors, it seems more economical to use the current mature diesel injector test bench than to redevelop a new specific test bench. The diesel injector test bench includes an injection test unit for testing the injection performance of the injector, and the test capacity of the injection test unit is designed based on the flow range of the diesel injector. However, during the test, the flow range of the diesel injector is usually about 0 to 450 mm 3 / stroke range, while the flow range of natural gas injectors is usually about 0 ~ 2000mm 3 That is, the flow threshold of the natural gas injector obviously exceeds the test capacity of the diesel injector test bench designed for diesel injectors. Directly using such a test bench to test the natural gas injector will easily cause malfunction or damage to the test bench.

[0004] Therefore, in order to use a conventional existing injector test bench to perform a test on a natural gas injector, the test bench needs to be adaptively adjusted to ensure the credibility of the test result and to protect the test bench from being damaged.

[0005] To this end, a possible solution may be to upgrade the diesel injector test bench, such as upgrading the flow meter and the test procedures used, but this will require a lot of money and take a long time. Another possible solution is to design and produce several low-flow special nozzles, and use these special nozzles to replace the original nozzles of the injectors, and then test them, but this also requires considerable funds and time to complete the design and production; in addition, if a large number of injectors need to be tested, the operation of replacing the nozzles will also waste a lot of time.

[0006] Therefore, it is necessary to propose improvement plans for target adaptability. Utility Model Content

[0007] The purpose of the present application is to provide a novel injector test adapter and a corresponding injector test system to at least partially solve the existing technical problems.

[0008] According to a first aspect of the present application, an injector test adapter is provided, which is suitable for positioning an injector relative to an injection test unit, the injector test adapter comprising an inlet, a throttle hole and a channel extending from the inlet to the throttle hole, the channel being configured to allow the injector to be inserted through the inlet and move to a test position, in which the outlet of the injector is adjacent to the throttle hole, and the fuel fluid ejected from the outlet flows into the injection test unit through the throttle hole, wherein the throttle hole has a flow capacity lower than that of the outlet.

[0009] According to an optional embodiment of the present application, the injector test adapter has a support portion suitable for fixing it to a fixed structure.

[0010] According to an optional embodiment of the present application, the passage of the injector test adapter narrows along a direction from the inlet to the throttle hole.

[0011] According to an optional embodiment of the present application, at the test position, the distance between the ejection port of the injector and the throttle hole is in the order of millimeters.

[0012] According to an optional embodiment of the present application, the injector test adapter includes a main body and a replaceable cap having the throttle hole, wherein the replaceable cap is detachably connected to the main body and together forms the channel.

[0013] According to an optional embodiment of the present application, the injector test adapter has a stopper arranged along the passage, and the stopper is suitable for stopping the injector displaced along the passage at the test position.

[0014] According to an optional embodiment of the present application, the replaceable cap is a substantially cylindrical structure surrounded by a circumferential side wall and only one end wall, and the throttling hole is arranged substantially at the center of the end wall.

[0015] According to an optional embodiment of the present application, the replaceable cap protrudes from the main body along the axial extension direction when connected to the main body.

[0016] According to an optional embodiment of the present application, the main body has a coupling portion for the replaceable cap, and the coupling portion is configured so that when the replaceable cap is connected to the coupling portion, the inner wall of the main body defining the channel and the inner wall of the replaceable cap defining the channel continuously transition.

[0017] According to an optional embodiment of the present application, the engaging portion has an internal thread, and the outer surface of the circumferential side wall of the replaceable cap has an external thread capable of being screwed together with the internal thread.

[0018] According to an optional embodiment of the present application, the channel defined by the main body has a first section adjacent to the inlet and a second section adjacent to the throttling hole, wherein the radial dimension of the first section is greater than the radial dimension of the second section, and the connection area between the first section and the second section forms the stop portion.

[0019] According to an optional embodiment of the present application, the injector test adapter further includes a sealing member disposed at the stopper, the sealing member being configured to prevent the fuel fluid from flowing back from the second section to the first section.

[0020] According to a second aspect of the present application, an injector test system is provided, comprising: an injector test adapter according to the present application; and an injection test unit for testing the injection performance of the injector, wherein the injector test adapter positions the injector relative to the injection test unit and reduces the flow rate of the fuel fluid flowing from the outlet of the injector into the injection test unit via the throttle hole.

[0021] According to an optional embodiment of the present application, the throttle hole of the injector test adapter is vertically aligned with the top inlet of the injection test unit, so that the fuel fluid flowing out of the throttle hole flows downward and flows into the injection test unit through the top inlet.

[0022] According to an optional embodiment of the present application, the injector test adapter is fixed to a fixing structure for holding the injection test unit through a supporting portion thereof.

[0023] According to an optional embodiment of the present application, the replaceable cap of the injector test adapter partially extends into the interior of the injection test unit through the top inlet.

[0024] According to an optional embodiment of the present application, a splash-proof structure is provided between the circumferential side wall of the replaceable cap and the top inlet, which is used to prevent the fuel fluid entering the injection test unit from splashing out.

[0025] According to an optional embodiment of the present application, the injector test system further includes an adjusting device for adjusting a position of the injector inserted into the injector test adapter.

[0026] According to the injector test adapter of the present application, the compatibility problem between the test capacity of the injector test bench and the flow range of the injector can be solved without modifying the test bench or the injector itself, so that the injection performance of different injectors can be tested using the same test bench in a low-cost and easy-to-operate manner. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The present invention will be described in more detail below with reference to the accompanying drawings, so that the principles, features and advantages of the present invention can be better understood. In the accompanying drawings:

[0028] Figure 1 A schematic diagram showing a conventional injector test system and an injector in a test state;

[0029] Figure 2 shows a schematic diagram of an injector test system according to the present application having an exemplary injector test adapter according to the present application;

[0030] Figure 3 Shows the test status Figure 2 A schematic diagram of an injector test system; and

[0031] Figure 4 A schematic diagram of a replaceable cap of an exemplary injector test adapter according to the present application is shown.

[0032] Reference numerals list

[0033] 1 Injector test adapter

[0034] 1' Injector positioning structure of conventional injector test system

[0035] 11 Entrance

[0036] 12 Throttle

[0037] 13 Subject

[0038] 131 Joint

[0039] 132 First Segment

[0040] 133 Second Section

[0041] 14 Replaceable caps

[0042] 141 Circumferential side wall

[0043] 142 end wall

[0044] 143 External thread

[0045] 15 Stopper

[0046] 16 Sealing member

[0047] L channel

[0048] F Fuel Fluid

[0049] 2 Injectors

[0050] 21 exit

[0051] 3 Injection test unit

[0052] 31 Top inlet

[0053] 100 Injector Test System DETAILED DESCRIPTION

[0054] In order to make the technical problems, technical solutions and beneficial technical effects to be solved by the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and multiple exemplary embodiments. It should be understood that the specific embodiments described herein are only used to explain the principles of the present application, rather than to limit the scope of protection of the present application.

[0055] Figure 1 FIG. 2 shows a schematic diagram of the main structure of a conventional injector test system in a test state. Here, the conventional injector test system may refer to a diesel injector test system, for example. Figure 1 As shown, the conventional injector test system includes an injector positioning structure 1' and an injection test unit 3 for testing the injection performance of the injector 2. The injector 2 is held by the injector positioning structure 1' and positioned relative to the injection test unit 3, so that the fuel fluid F ejected from the outlet 21 of the injector 2 enters the injection test unit 3 through the inlet 31 of the injection test unit 3, thereby allowing the injection test unit 3 to test, evaluate, characterize, certify or the like the injection performance of the injector 2 by testing the amount of the received fuel fluid F.

[0056] In the case of the diesel injector test system, the injector 2 is specifically a diesel injector. That is, the test capacity of the injection test unit 3 is designed according to the flow range or flow threshold of the injector 2 during the test. In addition to the diesel injector, such a diesel injector test system can also be directly applied to test other types of injectors whose flow threshold is lower than that of the diesel injector during the test without other adaptive adjustments.

[0057] However, when such a diesel injector test system is used to test a natural gas injector, since the flow threshold of the natural gas injector during the test is significantly higher than the corresponding threshold of the diesel injector, adaptive adjustment must be performed, otherwise it will easily lead to damage to the test system, especially the injection test unit 3 that directly receives the fuel fluid F.

[0058] To this end, a novel injector test adapter and a corresponding injector test system are proposed herein in order to be able to at least partially, preferably completely, solve the above-mentioned adaptation problem.

[0059] Figure 2 to Figure 4 An exemplary injector test adapter 1 according to the present application and a corresponding exemplary injector test system 100 according to the present application are schematically shown.

[0060] like Figure 2 and Figure 3 As shown, the injector test system 100 includes an injector test adapter 1 according to the present application and an injection test unit 3 for testing the injection performance of the injector 2. Exemplarily, the injection test unit 3 may be an injection quantity indicator for measuring the injection quantity of the fuel fluid F of a single injection.

[0061] The injector test adapter 1 according to the present application positions the injector 2 relative to the injection test unit 3, that is, in some embodiments, it can correspond to the injector positioning structure 1' of the conventional injector test system described above. The injector test adapter 1 includes an inlet 11, a throttle hole 12, and a channel L extending from the inlet 11 to the throttle hole 12. In particular, the inlet 11 and the throttle hole 12 can be arranged relatively along the channel L. The channel L is configured to allow the injector 2 to be inserted through the inlet 11 and move to a position such as Figure 3 In the test position, the outlet 21 of the injector 2 is adjacent to the throttle hole 12 , and the fuel fluid F ejected from the outlet 21 flows into the injection test unit 3 through the throttle hole 12 , wherein the throttle hole 12 has a lower flow capacity than the outlet 21 .

[0062] Therefore, the injector test adapter 1 according to the present application can reduce the flow rate of the fuel fluid flowing from the outlet 21 of the injector 2 into the injection test unit 3 via the throttle hole 12. Here, the flow rate may refer to the flow rate within a unit test cycle.

[0063] Since the flow capacity of the throttle hole 12 is lower than the flow capacity of the outlet port 21, at least part of the fuel fluid F flowing out of the outlet port 21 of the injector 2 needs to stay briefly inside the injector test adapter 1 before flowing out of the throttle hole 12. Therefore, the amount of the fuel fluid F entering the injection measurement unit 3 within a unit test cycle can be limited by means of the injector test adapter 1 having the throttle hole 12, so that the flow rate of the fuel fluid F flowing out of the throttle hole 12 is adapted to the test capacity of the injection test unit 3.

[0064] It is particularly worth noting that, although the compatibility problem between the diesel injector test system and the natural gas injector is mainly described in this article, the technical solution proposed in this application is also applicable to other combinations of test systems and injectors. In other words, using the diesel injector test system to test the injection performance of the natural gas injector is only a specific embodiment of this application. Under the technical concept of this application, the injector test adapter according to this application can also be applied to various existing or future developed injector test systems, thereby realizing individual or continuous testing of various injectors.

[0065] The injection performance of the injector 2 can be tested, evaluated, characterized or verified in a quantitative, semi-quantitative or qualitative manner. For example, it is possible to qualitatively or semi-quantitatively check whether the injection function of the injector 2 is normal, such as whether the flow range is within the normal range. In theory, in future improvements, the injection performance of the injector 2 can be further quantitatively tested by means of fluid simulation and structural optimization design of the injector test adapter 1.

[0066] Additionally or alternatively, the flow rate of the fuel fluid F flowing out of the throttle hole 12 may refer to the amount of the fuel fluid F received by the injection test unit 3 within a unit test cycle. Here, the amount of the fuel fluid F may be in units of mass, weight or volume. Additionally or alternatively, the unit test cycle may refer to a unit test time or a unit test operation, which may include, for example, one or more strokes.

[0067] Optionally, the injector test adapter 1 has a support portion (not shown in the figure) suitable for fixing it to a fixed structure. Here, the fixed structure can be a structure fixed to the ground directly or indirectly (for example, via another fixed structure or fixed component). Thereby, the injector test adapter 1 can be stably held. In particular, the injector test adapter 1 can be fixed to a fixed structure for holding the injection test unit 3 through its support portion, so that it is convenient for the injector test adapter 1 to position the injector 2 relative to the injection test unit 3. In some embodiments, the support portion of the injector test adapter 1 is detachably connected to the main body, so that it is allowed to first connect the support portion of the injector test adapter 1 to the fixed structure for holding the injection test unit 3 in the test preparation stage, and then connect the main body of the injector test adapter 1 to the support portion, and vice versa. Alternatively, the support portion of the injector test adapter 1 can also be non-detachably connected to the main body. Additionally or alternatively, the support portion itself can be adjustable in size, so as to facilitate adjusting the position of the injector test adapter 1 according to the position of the injection test unit 3, especially the position of the inlet for the fuel fluid F.

[0068] Alternatively, if Figure 2As shown, the channel L of the injector test adapter 1 narrows along the direction from the inlet 11 to the throttle hole 12. Such a design is more suitable for the geometric features of the end of the injector 2 adjacent to the outlet 12, thereby providing a cost-saving and simplified adapter.

[0069] During the test, the outlet 21 of the injector 2 is located at a position adjacent to the throttle hole 12 of the injector test adapter 1, i.e., at the test position, so that the flow rate of the fuel fluid F can be reduced as little as possible due to the addition of the injector test adapter 1. Preferably, at the test position, the distance between the outlet 21 of the injector 2 and the throttle hole 12 is in the order of millimeters. This can be more conducive to semi-quantitative or qualitative testing of the injection performance of the injector 2.

[0070] Optionally and preferably, the injector test adapter 1 may include a main body 13 and a replaceable cap 14 having a throttle hole 12, the replaceable cap 14 being detachably connected to the main body 13 and jointly forming a channel L. The main body 13 and the replaceable cap 14 may both be substantially cylindrical, so that the channel L may be formed by utilizing the internal hollow channels of the main body 13 and the replaceable cap 14.

[0071] In particular, a series of replaceable caps 14 can be provided, and each replaceable cap 14 has a throttle hole 12 with a different aperture. In this way, a suitable replaceable cap 14 can be selected according to the injection performance of the injector 2 to be tested and the test capacity of the injection test unit 3 in the test preparation stage, and then connected to the main body 13. This is particularly advantageous for continuous testing of different types of injectors, because the main body 13 can always be fixed without replacement or disassembly, and only the replaceable cap 14, that is, the part of the injector test adapter 1 with the throttle hole 12, needs to be adaptively replaced. As a result, a very convenient and time-saving test operation is provided.

[0072] Alternatively, if Figure 2 and Figure 3 As shown, the injector test adapter 1 may have a stopper 15 arranged along the channel L, and the stopper 15 is suitable for stopping the injector 2 displaced along the channel L at the test position. In this way, the injector 2 can be conveniently and accurately positioned at the test position in the injector test adapter 1.

[0073] In a preferred embodiment, Figure 2 As shown, the channel L defined by the main body 13 has a first section 132 adjacent to the inlet 11 and a second section 133 adjacent to the throttle hole 12, wherein the radial dimension of the first section 132 is greater than the radial dimension of the second section 133, and the connection area between the first section 132 and the second section 133 forms a stopper 15. In this way, the arrangement of the stopper 15 can be simply achieved by the structural design of the inner wall of the main body 13, without the need to design and install a separate component as the stopper 15.

[0074] Optionally, the injector test adapter 1 further comprises a sealing member 16 (eg, Figure 3 As shown in the figure, the sealing member 16 is used to prevent the fuel fluid from flowing back from the second section 133 to the first section 132. In this way, the fuel fluid can be prevented from flowing back and causing damage to the injector 2, and the reliability of the test results can be ensured. The sealing member 16 can seal a certain pressure, for example, it can be made of metal or alloy, or it can be made of elastic material that can be slightly deformed. However, such a sealing member 16 is not necessary for the injector test adapter 1. In some embodiments, a corresponding member (such as a sealing gasket made of copper or copper alloy) can be provided on the end face of the injector 2 to be matched with the stopper 15, so that when the injector 2 moves to the test position, the corresponding member can contact or abut the stopper 15 to play a sealing role. In this way, the corresponding member of the injector 2 can be used to achieve the sealing function without providing it in the injector test adapter 1.

[0075] Alternatively, if Figure 4 As shown, the replaceable cap 14 can be a generally cylindrical structure surrounded by a circumferential side wall 141 and only one end wall 142, and the throttle hole 12 is arranged at the approximate center of the end wall 142. In this way, a replaceable cap 14 with a simple structure can be provided based on the axisymmetric profile feature of the injector 2. Further optionally, as Figure 4 As shown, the circumferential side wall 141 and the end wall 142 may be connected by an inclined portion, which may be or include a rounded corner portion, for example.

[0076] In order to achieve the installation of the replaceable cap 14, the main body 13 may have a joint 131 for the replaceable cap 14. The joint 131 may be configured so that when the replaceable cap 14 is connected to the joint 131, the inner wall of the main body 13 defining the channel L and the inner wall of the replaceable cap 14 defining the channel L are continuously transitioned, such as Figure 2 and Figure 3 In this case, the second section 133 of the channel L mentioned above includes a channel portion defined by the inner wall of the replaceable cap 14. The continuous transition of the inner wall can protect the injector 2 from being damaged by bumps and the like when it moves along the channel L.

[0077] In a preferred embodiment, the engaging portion 131 may have an internal thread, and the outer surface of the circumferential side wall 141 of the replaceable cap 14 may have an external thread 143 that can be screwed with the internal thread. Figure 4 The main body 13 and the replaceable cap 14 can be conveniently connected in a detachable manner through a threaded connection.

[0078] Optionally, the replaceable cap 14 may protrude from the main body 13 in an axial extension direction when connected to the main body 13. Here, the axial extension direction is the extension direction of the channel L. In this way, the end of the replaceable cap 14 having the throttle hole 12 may be allowed to extend into the injection test unit 3. For example, Figure 3 As shown, the replaceable cap 14 of the injector test adapter 1 can partially extend into the interior of the injection test unit 3 through the top inlet 31 of the injection test unit 3. In this way, it can help to completely collect the fuel fluid F flowing out of the throttle hole 12. Preferably, there is a splash-proof structure between the circumferential side wall 141 of the replaceable cap 14 and the top inlet 31, which is used to prevent the fuel fluid F entering the injection test unit 3 from splashing. In this way, the reliability of the test result can be further improved.

[0079] In particular, the injector test adapter 1 can be Figure 2 and Figure 3 As shown, the injector 2 is positioned above the injection test unit 3, in which case the injector 2 can be inserted into the injector test adapter 1 by moving from top to bottom with the outlet 21 oriented downward. To this end, the throttle hole 12 of the injector test adapter 1 can be aligned with the top inlet 31 of the injection test unit 3 in the vertical direction, so that the fuel fluid flowing out of the throttle hole 12 flows downward and flows into the injection test unit 3 through the top inlet 31.

[0080] In addition, additionally or alternatively, the injector test system 100 may further include an adjusting device for adjusting the position of the injector 2 inserted into the injector test adapter 1. Here, the adjusting device may be or include a manipulator for clamping the injector 2, and the manipulator may controllably adjust the position (i.e., the insertion depth) of the injector 2 in the injector test adapter 1.

[0081] The injector test adapter 1 and the injector test system 100 according to the present application can realize the use of the same test bench to test the injection performance of different injectors, solve the compatibility problem between the test capacity of the injector test bench and the flow range of the injector, without modifying the test bench or the injector itself, and have the advantages of simple structure, convenient operation, reliable test results, cost saving, test time saving, etc. In particular, for the continuous testing of multiple injectors, a fast adapter replacement operation can be provided.

[0082] It should be understood that, in this document, the expressions "first", "second", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance, nor should they be understood as implicitly indicating the number of technical features indicated. Features defined as "first" or "second" may explicitly or implicitly indicate that at least one of the features is included.

[0083] It should also be understood that in the description herein, the use of words and phrases indicating orientation or positional relationship such as "upper", "lower", "top", "bottom", "inside", "outside", etc. to illustrate the positional relationship of each constituent element with reference to the accompanying drawings is only for the purpose of facilitating the understanding of the scheme of the present application and simplifying the description, and does not indicate or imply that the device or element referred to has a specific orientation, is constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. The positional relationship of the constituent elements is appropriately changed according to the direction of describing each constituent element. Therefore, it is not limited to the words and phrases described in this article and can be appropriately replaced according to the situation.

[0084] It should also be understood that in the description of this specification, the description of the terms "one embodiment", "some embodiments" and "exemplary embodiments" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment are included in at least one embodiment of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment.

[0085] Although the specific embodiments of the present application are described in detail herein, they are provided for the purpose of explanation only and should not be considered to limit the scope of the present application. Various substitutions, changes and modifications may be conceived without departing from the spirit and scope of the present application.

Claims

1. An injector test adapter (1) adapted to position an injector (2) relative to an injection test unit (3), It is characterized in that The injector test adapter (1) comprises an inlet (11), a throttle hole (12) and a channel (L) extending from the inlet (11) to the throttle hole (12), wherein the channel (L) is configured to allow the injector (2) to be inserted through the inlet (11) and move to a test position, wherein the outlet (21) of the injector (2) is adjacent to the throttle hole (12), and the fuel fluid (F) ejected from the outlet (21) flows into the injection test unit (3) through the throttle hole (12). The throttling hole (12) has a flow capacity lower than that of the outlet (21).

2. The injector test adapter (1) according to claim 1, characterized in that The injector test adapter (1) has a support portion suitable for fixing it to a fixed structure; and / or The passage (L) of the injector test adapter (1) narrows in a direction from the inlet (11) to the throttle hole (12); and / or In the test position, the distance between the outlet port (21) of the injector (2) and the throttle hole (12) is in the order of millimeters.

3. The injector test adapter (1) according to claim 1 or 2, characterized in that The injector test adapter (1) comprises a main body (13) and a replaceable cap (14) having the throttle hole (12), wherein the replaceable cap (14) is detachably connected to the main body (13) and together forms the channel (L); and / or The injector test adapter (1) has a stopper (15) arranged along the passage (L), and the stopper (15) is suitable for stopping the injector (2) displaced along the passage (L) at the test position.

4. The injector test adapter (1) according to claim 3, characterized in that The replaceable cap (14) is a generally cylindrical structure surrounded by a circumferential side wall (141) and only one end wall (142), and the throttle hole (12) is arranged at a substantially center of the end wall (142); and / or The replaceable cap (14) protrudes from the main body (13) along the axial extension direction when connected to the main body (13); and / or The main body (13) has a joint (131) for the replaceable cap (14), and the joint (131) is arranged so that when the replaceable cap (14) is connected to the joint (131), the inner wall of the main body (13) defining the channel (L) and the inner wall of the replaceable cap (14) defining the channel (L) are continuously transitioned.

5. The injector test adapter (1) according to claim 4, characterized in that The engaging portion (131) has an internal thread, and the outer surface of the circumferential side wall (141) of the replaceable cap (14) has an external thread capable of being screwed together with the internal thread.

6. The injector test adapter (1) according to claim 3, characterized in that The passage (L) defined by the body (13) has a first section (132) adjacent to the inlet (11) and a second section (133) adjacent to the throttle hole (12), wherein the radial dimension of the first section (132) is greater than the radial dimension of the second section (133), and the connection area between the first section (132) and the second section (133) forms the stopper (15); and / or The injector test adapter (1) further comprises a sealing member (16) disposed at the stopper (15), the sealing member (16) being used to prevent the fuel fluid (F) from flowing back from the second section (133) to the first section (132).

7. An injector testing system (100), characterized in that: The injector testing system (100) comprises: An injector test adapter (1) according to any one of claims 1 to 6; and An injection test unit (3) is used to test the injection performance of the injector (2). The injector test adapter (1) positions the injector (2) relative to the injection test unit (3) and reduces the flow rate of the fuel fluid (F) flowing from the outlet (21) of the injector (2) into the injection test unit (3) via the throttle hole (12).

8. The injector testing system (100) according to claim 7, characterized in that: The throttle hole (12) of the injector test adapter (1) is aligned with the top inlet (31) of the injection test unit (3) in the vertical direction, so that the fuel fluid (F) flowing out of the throttle hole (12) flows downward and flows into the injection test unit (3) through the top inlet (31); and / or The injector test adapter (1) is fixed to a fixing structure for holding the injection test unit (3) via its supporting part.

9. The injector testing system (100) according to claim 8, characterized in that: The replaceable cap (14) of the injector test adapter (1) partially extends into the interior of the injector test unit (3) via the top inlet (31); and / or A splash-proof structure is provided between the circumferential side wall (141) of the replaceable cap (14) and the top inlet (31), which is used to prevent the fuel fluid (F) entering the injection test unit (3) from splashing out.

10. The injector testing system (100) according to any one of claims 7 to 9, characterized in that: The injector test system (100) further comprises an adjusting device for adjusting the position of the injector (2) inserted into the injector test adapter (1).

Images