A FUEL INJECTOR TEST DEVICE

Abstract

A test device (100) that measures a hydraulic flow rate of a nozzle (20) of fuel injectors, comprises at least one first module (11) having a main feed channel (111) providing pressurized fuel into the test device (100), at least one second module (12) having a first channel (121) in fluid communication with the main feed channel (111) and providing pressurized fuel through the nozzle (20) which is positioned under the second module (12) for being tested. The test device (100) comprises a second channel (122) with a narrower second angle (?2) according to a first angle (?1) of the first channel (121) regarding to the main axis (A) of the test device (100) wherein the second channel (122) is formed in continuation of the first channel (121) in the second module (12) with a diameter smaller than a diameter of the first channel (121).

Description

1 TARIFF A FUEL INJECTOR TEST DEVICE TECHNICAL FIELD OF INVENTION 5 The present invention relates to a test device according to the preceding part of claim 1. BACKGROUND OF THE INVENTION The test device measures the hydraulic flow rate of fuel injectors. This test device measures flow rates from 100 bar to... It can operate between 2500 bar. The test device is supplied via a main power supply channel. A high-pressure fuel is fed into a pressure chamber of the test nozzle piece. In the previous testing equipment, high-pressure fuel was passed through a spring plate in the nozzle section. It is colliding because the high-pressure fuel channel of the test module of the test device is at a high angle of 15. It is angled. This affects the spring forces and needle opening and closing times. High A high-pressure orifice with a slope angle is used. The spring plate or nozzle... There is a high risk of striking and damaging any other internal part. Needle opening and The needle force values ​​that influence closing times are affected by this risk. This reduces the reliability of the test results. 20 The prior technical documentation is published in patent application number US6290148B1. This The document states that a fuel injection valve's nozzle needle is axially located in a nozzle body. its orientation and rear end pointing towards a compression chamber and a damping Its functional connection to the body is revealed. 25 including the damping hole. The recesses of the damping housing contain a fuel-filled damping chamber. This is achieved by opening the valve, compressing the fuel inside the compression chamber. Therefore, valve opening is delayed. If the nozzle needle exceeds the damping pulse (hd), this In this process, the fuel pressure is reduced by a transmission system with an outlet chamber. The damping housing must have a damping hole of 30 along at least part of its length. It is being redirected. However, additional solutions are needed to improve the reliability and efficiency of the testing machine. It needs to be searched. 35 2 A BRIEF DESCRIPTION OF THE INVENTION One aim of the present invention is to improve the nozzle portion of fuel injectors in internal combustion engines. The goal is to optimize hydraulic flow dynamics in a test device that measures hydraulic flow rate. The current 5 Another purpose of the invention is to prevent damage to critical components, such as the nozzle's spring plate. The aim is to minimize the risk. To achieve the stated objective, the present invention, Ensuring accurate and reliable hydraulic flow measurements by optimizing the channel angle. It relates to a testing device. In the present invention, the nozzle portion of fuel injectors of internal combustion engines is converted into a hydraulic flow. A test device was developed that measures speed and has a main axis that is perpendicular to the working axis. It is located and the test device in question has a main supply that provides pressurized fuel to the test device. It includes at least one first module and at least one second module that have a channel. The second module, which is in fluid transmission via the main supply channel and is being tested, is the second 15. a primary channel that supplies pressurized fuel through a nozzle located below the module It has. In addition, the test device has a first channel relative to the main axis of the test device. It includes a second channel with a narrower second angle relative to the first, where the second channel The second module will have a diameter smaller than the diameter of the first channel. It is formed in the continuation of the channel. Thus, the fluids coming from the second channel, spring 20 Direct impact with the plate or any other wall of the nozzle is prevented. In a possible configuration of the invention, the test device would incorporate a second component for a smooth passage of the fluid. It has a diffuser between the first and second channels. Thus, from the first channel to the second channel... A smooth passage of fluid is ensured through a connection between them. 25 In another possible configuration of the invention, the diffuser would descend towards the second channel. It is arranged in a truncated-conical form. Thus, the fluid flows from the first channel to the second channel. A smooth and proper transition is ensured. In another possible configuration of the invention, a second angle of the second channel relative to the main axis, It is around 10° to 20°, preferably 15°. Thus, in the second module of the test device, the nozzle... To provide a new direction to the fluid as it enters, after the first channel and the second Approximately in the middle of the module, a diffraction angle as a second angle of the second channel. is provided. 35 3 In another possible configuration of the invention, the first channel has a first angle relative to the main axis, It is around 30° to 40°, preferably 35°. Thus, the angle of incidence of the first channel, especially An angle at one mouth of the first channel will be in the fluid transmission with the main feed channel. It is compatible. Therefore, the angle of the main supply channel does not need to be changed. In another possible configuration of the invention, the second channel would be connected to a pressure chamber of the nozzle. It is created in fluid conveying. Thus, the fluid coming from the second channel passes through the nozzle. pressure to prevent impact on any inner wall or any internal component. It is directed into its reservoir. In another possible configuration of the invention, the second channel would have a central axis, and the first channel would have a central axis. the main axis of the test device at a point further away from the intersection of its central axis with the major axis It is arranged to intersect with the axis. Thus, the fluids coming from the second channel, This prevents the nozzle from directly hitting the spring plate. BRIEF DESCRIPTION OF THE FIGURES The sole purpose of the attached drawings, whose advantages over the previous technique are given above, is to show the current The purpose is to illustrate the invention, and these drawings will be explained in detail below: In Figure 1, according to the present invention, there is a first module, a second module, a principal axis, a main a test device for a nozzle, having a feed channel, a first channel and a second channel A two-dimensional cross-sectional view is provided. Figure 2 shows the test device for the nozzle, which has a first module and a second module, according to the previous technique, 25 A two-dimensional cross-sectional view is provided. In Figure 3, according to the previous technique, the first channel, the second channel, a first angle, and the main axis are shown. A close-up two-dimensional view of the second module is given. In Figure 4, according to the present invention, the first channel, the second channel, the first angle, the second angle, and the main A two-dimensional view of the second module with an axis is given. 4 REFERENCE NUMBERS 100 testing devices 11 first module 111 main supply channels 5 12 second modules Channel 121 122 second channel 123 diffusers nozzle (part of the nozzle) 10 21 pressure chambers 22 spring plates A main axis α1 is the first angle α2 second angle15 DETAILED DESCRIPTION OF THE FIGURES Referring to the figures summarized above, the present invention describes a test, preferably for fuel injectors. The device (100) is presented. In the previous technique, the design of the high-pressure fuel channel, It has not adequately addressed the challenges caused by the steep slope angle. This design problem, 5 This can lead to problematic fuel flow dynamics, which in turn affects the nozzle's spring mechanism. This can cause damage. In Figure 2, according to the previous technique, for the nozzle (20) with the first module (11) and the second module (12). A two-dimensional cross-sectional view of the test device (100) is given. Another previous technique 10 As can be seen in Figure 3, the high-pressure fluid flows through a main feed, respectively. channel (111) passes through a first channel (121) and a second channel (122). In the technique, if the alignment angle of the channels remains unchanged, high pressure is applied to the spring plate (22). Fluid impact occurs, which creates a risk of damage to the spring plate (22). Additional Thus, repeated impacts cause fatigue failure of the spring plate (22). These risks are possible. To effectively control the fluid dynamics in the device, these risks must be considered. Rearranging the previous technique to alleviate the problem, for example, optimizing the channel angles. It is important to do this. In addition, as shown in Figure 3, the same 20° relative to the main axis (A) of the test device (100) according to the previous technique. The second module (12) has two channels (α1) with the first channel (121) and the second channel (122) at the first angle. A three-dimensional close-up view is given. Both the first channel (121) and the second channel (122) is aligned at the same angle with respect to the principal axis (A). The first angle (α1) is the first channel (121) and represents the positioning of the second channel (122) relative to the main axis (A). This alignment, This results in a direct flow path for the high-pressure fluid, which in turn causes the fluid to 25 passing from the first channel (121) to the second channel (122) and also the pressure chamber of the nozzle (20) (21) can cause increased impact forces when passing through. The unchanged angle configuration allows high-pressure fluid to reach sensitive components, for example... This can increase the risk of a direct impact on the spring plate (22). In this context, the “main axis (A)” runs along the test device (100), as can be seen from Figure 3. The extended test device (100) has a main axis and is perpendicular to a horizontal axis of the test device (100). It is possible. In Figure 1, according to the present invention, the first module (11) and the second module, such as the adapters of the device, are shown. A two-dimensional cross-sectional view of a test device (100) is given. (12) The part, for example the nozzle (20), is located under the second module (12). In Figures 1 and 2, 6 A section of the nozzle (20) pressure chamber (21) is shown, in particular, and in a cross-sectional view. Because the entire nozzle (20) is not given in the figures, the nozzle (20) in the description is given. It refers to a part of the nozzle (20) given in the figures. Test device (100), internal combustion The fuel injectors of the engines measure the hydraulic flow rate of a nozzle (20) section, It has a main axis (A) that is perpendicular to the working condition. The test device (100) has 5 to the test device. (100) At least one first module (111) having a main supply channel (111) that provides pressurized fuel. and fluid transmission through the main supply channel (111) and pressurized through the nozzle (20) It includes at least one second module (12) with a first channel (121) that supplies fuel, where, Nozzle (20) is located under the second module (12) to be tested. Test device (100) is a first angle (α1) of the first channel (121) with respect to the main axis (A) of the test device (100). It includes a second channel (122) with a narrower second angle (α2) than the second, where the second channel (122) will have a diameter smaller than that of the first channel (121), The second module (12) is created as a continuation of the first channel (121). In addition, the test device (100) includes a second channel (122) and a first 15 for a smooth passage of the fluid. It has a diffuser (123) between channel (121), moreover, the diffuser (123) is connected to, for example, the second channel (122) is arranged in a truncated-conical form that descends correctly. This smooth transition is fluid. It not only increases the overall efficiency of transmission, but also reduces sudden changes in flow direction or velocity. It also mitigates the risk of damage caused by changes. In addition, the diffuser (123) Its truncated-conical shape helps to distribute fluid pressure more evenly, 20 It also contributes to the stability of fluid flow. In Figure 4, according to the present invention, the first channel (121), the second channel (122), the first angle (α1), A two-dimensional close-up of the second module (12) with the second angle (α2) and the major axis (A). The view is given. The second angle (α2) of the second channel (122) with respect to the main axis (A) is 10 to 20 25 a first angle of the first channel (121) with respect to the main axis (A) around the interval, preferably 15 (α1) is around 30 to 40, preferably 35. In addition, the second channel (122) is the nozzle. (20) is formed in a fluid transmission with a pressure chamber (21). The second channel (122) central axis, from the intersection of a central axis of the first channel (121) with the major axis (A) 30 at a more distant point where the test device (100) will intersect with the main axis (A). It is being organized. In a detailed description of the present invention, the test device (100) is shown in Figure 4, as the first having a narrower second angle (α2) compared to the first angle (α1) of the channel (121) It has a second channel (122). This design modification provides a more favorable fluid flow path 35 to provide and high-pressure fluid to sensitive components such as spring plate (22) 7 It minimizes the risk of collision. Angles allow fluid passage from one channel to another. It is strategically chosen to be soft so that the second (100) of the test device In the module (12), the fluid is directed in a new direction as it enters through the nozzle (20), which is a test piece. to provide after the first channel (121) and approximately in the middle of the second module (12) In this section, a diffraction angle is provided as a second angle (α2) of the second channel (122). 5 In addition, the diffuser (123) is located between the first channel (121) and the second channel (122). It is formed, the diffuser (123) in a truncated conical shape descending towards the second channel (122). This configuration is designed to facilitate a gradual passage of the fluid, which, It helps maintain the flow and prevents sudden changes in flow direction or speed. It reduces the possibility of fluid pressure being more evenly distributed. The diffuser (123) also reduces the possibility of fluid pressure being more evenly distributed. It helps in its redistribution, contributes to the stability of hydraulic flow, and internal components such as the nozzle (20) spring plate (22) in addition to potential damage It protects. Advantageously, the present invention improves both the efficiency and performance of hydraulic flow measurements for fuel injectors. and also greatly increases its reliability. By optimizing the channel angles and a By using the diffuser (123), the test device (100) directs the high-pressure fluid to the nozzle (20) more It ensures controlled and stable flow. This is sensitive, for example, the spring plate (22). reducing the risk of damage to the components, improving the efficiency and reliability of the nozzle (20) This increases the effectiveness of protecting critical components from excessive wear and potential failure. The present invention protects against excessive wear on the product to be tested, e.g. on the nozzle (20). This reduces waste, thereby increasing efficiency and reliability.

Claims

8 REQUESTS 1. The hydraulic flow rate of the nozzle (20) of the fuel injectors of internal combustion engines a test device (100) which measures and has a principal axis (A) that is perpendicular in a working condition and the test device in question (100) is a 5 that supplies pressurized fuel to the test device (100). at least one first module (11) with a main feed channel (111) and at least one second The inclusion of module (12) means that the second module (12) is connected to the main supply channel (111) The fluid transmission is located under the second module (12) and is to be tested. It has a first channel (121) that supplies pressurized fuel through the nozzle (20), The subject of the invention is the feature of the test device (100); the test device (100), the test device (100) 10 a narrower first angle (α1) of the first channel (121) with respect to its main axis (A) It contains a second channel (122) with a second angle (α2), the second channel (122) is the first in the second module, which will have a diameter smaller than one of the diameters of the channel (121) (12) is that the first channel (121) was created as a continuation of the first channel.

2. According to claim 1, a test device (100) is characterized by the fact that the test device (100) is the fluid. a diffuser between the second channel (122) and the first channel (121) for a smooth transition (123) is to have.

3. According to claim 2, a test device (100) has the following feature; the diffuser (123) is connected to the second channel (122) 20 It is arranged in a truncated-conical form that descends steadily.

4. A test device (100) according to any of the previous requirements, and its feature is the main The second angle (α2) of the second channel (122) with respect to the axis (A) is around 10 to 20. It should be, preferably, 15°. 25 5. A test device (100) according to any of the previous requirements, and its feature is the main The first angle (α1) of the first channel (121) with respect to the axis (A) is between 30 and 40. It should be around 35°, preferably.

6. A test device (100) according to any of the previous requirements, and its feature is the second channel (122), nozzle (20) with a pressure chamber (21) in fluid transmission It is the fact that it has been created.

7. A test device (100) according to any of the previous requirements and its feature is the second 35 the main axis of the channel (122) is the main axis of the first channel (121) 9 The main test device (100) at a point further away from the intersection with the axis (A). It is arranged in such a way that it intersects with the axis (A).

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