A cleaning and testing device for automotive fuel injectors

Abstract

This utility model discloses an automotive fuel injector cleaning and testing device, comprising: a housing; a cleaning tank installed on the surface of the housing, with an ultrasonic transducer at the bottom, the cleaning tank being used to hold a cleaning and testing fluid; an oil pump installed inside the housing, the oil pump's inlet communicating with the cleaning tank, the oil pump being used to extract the cleaning and testing fluid from the cleaning tank, and the oil pump's outlet connected to an oil pipe; a cover plate hinged to the housing, and the cover plate being used to cover the cleaning tank; and a glass tube assembly installed on the side of the cover plate near the cleaning tank, the glass tube assembly including a bracket, one or two glass tubes installed on the bracket, the outlet of the glass tube communicating with the cleaning tank, and the inlet of the glass tube being used to install a fuel injector, the fuel injector being connected to the oil pipe. This utility model solves the problems of large size and high operating cost of existing automotive fuel injector cleaning and testing devices.

Description

Technical Field

[0001] This utility model relates to the field of testing equipment technology, and in particular to a single-cylinder cleaning and testing device for automotive fuel injectors. Background Technology

[0002] In the maintenance and repair of internal combustion engine power equipment (such as automobiles and motorcycles), the cleanliness and performance of fuel injectors directly affect fuel combustion efficiency, power output, and pollutant emissions. Therefore, regular cleaning and performance testing of fuel injectors are core maintenance procedures, and fuel injector cleaning and testing equipment is a key tool for achieving this. Currently, most mainstream fuel injector cleaning and testing equipment on the market adopts a benchtop integrated architecture design. However, existing benchtop integrated architecture fuel injector cleaning and testing equipment has the following shortcomings in actual use:

[0003] Because the existing equipment adopts an overall architecture design and needs to be compatible with the simultaneous testing requirements of multiple cylinder numbers (such as four-cylinder and six-cylinder) injectors, its main frame, glass tube support, and integrated ultrasonic module need to reserve sufficient installation and operation space, resulting in a large overall size of the equipment. This not only occupies storage space in the maintenance site but also increases packaging and transportation costs. In scenarios with a small number of cylinders, there is a serious waste of resources. For cleaning and testing of one or two injectors, it is still necessary to start an oil delivery system and ultrasonic module adapted to multiple cylinder numbers, which not only increases unnecessary energy consumption but also affects the cleaning and testing effect. Utility Model Content

[0004] The main purpose of this utility model is to provide an automotive fuel injector cleaning and testing device, which aims to solve the problems of large size and high cost of existing automotive fuel injector cleaning and testing devices.

[0005] To achieve the above objectives, this utility model proposes an automotive fuel injector cleaning and testing device, comprising:

[0006] case;

[0007] A cleaning tank is installed on the surface of the housing. An ultrasonic transducer is provided at the bottom of the cleaning tank. The cleaning tank is used to hold the cleaning and testing liquid.

[0008] An oil pump is installed inside the housing. The inlet of the oil pump is connected to the cleaning tank. The oil pump is used to extract the cleaning and testing liquid in the cleaning tank. The outlet of the oil pump is connected to an oil pipe.

[0009] A cover plate, hinged to the housing, and the cover plate is used to cover the cleaning tank;

[0010] A glass tube assembly is installed on the side of the cover plate near the cleaning tank. The glass tube assembly includes a bracket and one or two glass tubes installed on the bracket. The outlet of the glass tube is connected to the cleaning tank, and the inlet of the glass tube is used to install an oil injector. The oil injector is connected to the oil pipe.

[0011] Optionally, the glass tube is configured as a single unit, and the support includes a slot for inserting the glass tube, which is detachably inserted into the slot.

[0012] Optionally, the bracket is further provided with a connecting part for detachable connection with the cover plate, and the connecting part is provided in two, with the two connecting parts symmetrically arranged on both sides of the bracket.

[0013] Optionally, the cover plate has an open state and a closed state;

[0014] When the cover is in the closed state, the cover and the glass tube are parallel to the surface of the housing, and the cover covers the opening of the cleaning tank;

[0015] When the cover is in the open state, the cover and the glass tube are perpendicular to the surface of the housing, and the liquid outlet of the glass tube is directly opposite the opening of the cleaning tank.

[0016] Optionally, a filter is also installed inside the housing. The filter is used to connect the cleaning tank and the oil pump. The inlet of the filter is connected to the cleaning tank, and the outlet of the filter is connected to the inlet of the oil pump.

[0017] Optionally, a heating plate is also connected to the bottom of the cleaning tank.

[0018] Optionally, the support surface is further provided with an adapter, one end of which is connected to the outlet of the oil pump, and the other end of which is connected to the oil pipe.

[0019] Optionally, the end of the oil pipe is plugged into the adapter.

[0020] Optionally, the oil pipe and the glass pipe are respectively inserted into the end of the fuel injector, and the end of the fuel injector is fitted with a sealing ring.

[0021] The beneficial effects of this utility model are as follows: It overcomes the limitations of existing tabletop equipment due to its large size, integrating core components such as the cleaning tank, ultrasonic transducer, and oil pump into the housing. The glass tube assembly is stored with the hinged cover, achieving a compact layout and foldable storage, greatly reducing the overall size of the equipment, saving storage space, reducing packaging size, and lowering logistics and transportation costs. By limiting the number of glass tubes to one or two, it precisely matches the cleaning and inspection needs of single / twin cylinder fuel injectors in motorcycles, eliminating the need to use idle channels and redundant systems in multi-cylinder equipment, thus avoiding functional waste. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the cover plate of the cleaning and testing equipment of this utility model in the closed state;

[0024] Figure 2 This is a schematic diagram of the opening state of the cover plate of the cleaning and testing equipment of this utility model.

[0025] Figure 3 This is a schematic diagram of the exploded structure of the cleaning and testing equipment of this utility model;

[0026] Figure 4 This is a schematic diagram of the exploded structure of the glass tube assembly of this utility model;

[0027] Label Explanation:

[0028] 1. Housing; 21. Cleaning tank; 22. Ultrasonic transducer; 23. Heating plate; 3. Oil pump; 4. Oil pipe; 5. Cover plate; 61. Bracket; 62. Glass tube; 63. Slot; 64. Connecting part; 7. Oil injector; 8. Filter; 9. Adapter.

[0029] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0032] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, if the word "and / or" appears throughout the text, it means including three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution that simultaneously satisfies A and B. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0033] One embodiment of this utility model provides an automotive fuel injector cleaning and testing device, see reference. Figure 1 ,to Figure 3 ,include:

[0034] Casing 1;

[0035] A cleaning tank 21 is installed on the surface of the housing 1. An ultrasonic transducer 22 is provided at the bottom of the cleaning tank 21. The cleaning tank 21 is used to hold the cleaning and testing liquid.

[0036] Oil pump 3 is installed inside the housing 1. The inlet of oil pump 3 is connected to the cleaning tank 21. Oil pump 3 is used to extract the cleaning and testing liquid in the cleaning tank 21. The outlet of oil pump 3 is connected to an oil pipe 4.

[0037] The cover plate 5 is hinged to the housing 1, and the cover plate 5 is used to cover the cleaning tank 21.

[0038] A glass tube assembly is installed on the side of the cover plate 5 near the cleaning tank 21. The glass tube assembly includes a bracket 61 and one or two glass tubes 62 installed on the bracket 61. The outlet of the glass tube 62 is connected to the cleaning tank 21, and the inlet of the glass tube 62 is used to install the fuel injector 7. The fuel injector 7 is connected to the oil pipe 4.

[0039] In this embodiment, addressing the shortcomings of existing multi-cylinder equipment in scenarios with a small number of cylinders, such as idle components and wasted energy, the number of glass tubes 62 is limited to one or two, precisely matching the cleaning and inspection needs of single / twin cylinder fuel injectors 7 in motorcycles and other applications. This eliminates the need to utilize idle channels and redundant systems of multi-cylinder equipment, avoiding functional waste. Simultaneously, it adapts to the oil delivery and ultrasonic power requirements of small-cylinder equipment, eliminating the need to drive the high-power system of multi-cylinder equipment, significantly reducing energy consumption. Furthermore, it improves upon the fixed structure, large size, and space-consuming nature of existing cleaning and inspection equipment. Core components such as the cleaning tank 21, ultrasonic transducer 22, and oil pump 3 are integrated inside the housing 1, with the glass tube assembly stored with the hinged cover 5, achieving a compact layout and foldable storage. This significantly reduces the overall size of the equipment, saves storage space, reduces packaging size, and lowers logistics and transportation costs.

[0040] Specifically, when the fuel injector 7 needs to be tested, its two ends are connected to the oil pipe 4 and the glass tube assembly respectively. The cleaning and testing fluid is poured into the cleaning tank 21, the equipment is started, and the oil pump 3 draws out the cleaning and testing fluid from the cleaning tank 21. The cleaning and testing fluid flows into the nozzle through the oil pipe 4, and finally flows into the glass tube 62, and then flows from the glass tube 62 back into the cleaning tank 21, completing the testing of the fuel injector 7 and the circulation of the cleaning and testing fluid. When testing is not required, the fuel injector 7 is removed, the cover plate 5 is closed, and the glass tube assembly is hidden under the cover plate 5, that is, inside the housing 1, so that the housing 1 forms a whole. In this embodiment, it is a rectangular body, which reduces the impact of the glass tube assembly on the overall volume of the equipment, greatly reduces the overall volume of the equipment, saves packaging materials, and reduces the cost of packaging box transportation.

[0041] Further, refer to Figure 4 The glass tube 62 is configured as a single unit, and the bracket 61 includes a slot 63 for inserting the glass tube 62. The glass tube 62 is detachably inserted into the slot 63. In this embodiment, the glass tube 62 is detachably inserted into the bracket 61 via the slot 63, allowing for insertion and removal of the glass tube 62 without the need for tools. Compared to the structure in traditional equipment where the glass tube 62 is fixedly connected to the bracket 61, when oil stains adhere to the inner wall of the glass tube 62, affecting observation accuracy, or when the glass tube 62 is damaged, the user can quickly disassemble the old glass tube 62 and replace it with a new one, significantly shortening maintenance time and reducing maintenance costs.

[0042] Furthermore, the bracket 61 is also provided with connecting portions 64 for detachable connection with the cover plate 5. Two connecting portions 64 are provided, symmetrically arranged on both sides of the bracket 61. The bracket 61 is detachably connected to the cover plate 5 via the connecting portions 64. When the slot 63 of the bracket 61 is worn, or when a bracket 61 of a different specification needs to be replaced, it is not necessary to disassemble the entire cover plate 5; only the connecting portions 64 need to be separated to remove the bracket 61. This structure allows for the replacement of different compatible brackets 61 for different sizes of glass tubes 62 according to different actual testing needs, simplifying operation and improving versatility. Specifically, in this embodiment, the connecting portion 64 can be configured as a rectangular lug integrally formed on both sides of the bracket 61, with each lug having a threaded hole. The bracket 61 is fixed to the cover plate 5 with screws, improving the stability of the structure.

[0043] Further, refer to Figure 1 and Figure 2 The cover plate 5 has an open state and a closed state;

[0044] When the cover plate 5 is in the closed state, the cover plate 5 and the glass tube 62 are parallel to the surface of the housing 1, and the cover plate 5 covers the opening of the cleaning tank 21;

[0045] When the cover plate 5 is in the open state, the cover plate 5 and the glass tube 62 are perpendicular to the surface of the housing 1, and the liquid outlet of the glass tube 62 is directly opposite the opening of the cleaning tank 21.

[0046] In this embodiment, when the cover plate 5 is closed, it is parallel to the surface of the housing 1 along with the glass tube 62. This allows the glass tube assembly and the opening of the cleaning tank 21 to be completely housed within the overall outline of the equipment, with no protruding parts, which greatly reduces the volume occupied by the equipment when it is idle or during transportation. At the same time, the cover plate 5 covers the opening of the cleaning tank 21, which can prevent dust and impurities from entering the cleaning tank 21 and contaminating the cleaning and testing solution.

[0047] After the cover plate 5 is opened, it is perpendicular to the surface of the housing 1. The glass tube 62 is also perpendicular to the cover plate 5. Its liquid outlet can be precisely aligned with the opening of the cleaning tank 21, ensuring that the cleaning and testing liquid in the glass tube 62 flows back to the cleaning tank 21 without deviation. At the same time, the vertical glass tube 62 is in a vertically downward position, and the operator can clearly observe the atomization effect and oil flow status of the oil nozzle 7 in the glass tube 62 from the front or side, reducing detection errors and improving the accuracy of judgment.

[0048] Furthermore, a filter 8 is also installed inside the housing 1. The filter 8 is used to connect the cleaning tank 21 and the oil pump 3. The inlet of the filter 8 is connected to the cleaning tank 21, and the outlet of the filter 8 is connected to the inlet of the oil pump 3.

[0049] It should be noted that when the fuel injector 7 needs to be cleaned, it can be placed in the cleaning tank 21 for ultrasonic cleaning. After cleaning, there may be impurities remaining in the cleaning and testing fluid. If the impurities directly enter the oil pump 3, they can easily cause pump body wear. If they enter the fuel injector 7, they can easily clog the interface or affect the atomization effect. The filter 8 can intercept the impurities in the cleaning tank 21, preventing impurities from entering the oil pump 3 with the oil and causing blade wear and flow reduction, or entering the fuel injector 7 and causing blockage of the testing channel. This significantly reduces the failure probability of core components and extends the overall service life of the equipment.

[0050] Furthermore, a heating plate 23 is also connected to the bottom of the cleaning tank 21. It should be noted that the oil stains (such as carbon deposits and gum) attached to the surface of the fuel injector 7 dissolve slowly in the cleaning and testing liquid at room temperature. Relying solely on the vibration and peeling of the ultrasonic transducer 22 is insufficient to quickly remove stubborn oil stains, especially in low-temperature environments where the oil stain dissolving ability further decreases. In this embodiment, by adding the heating plate 23, the cleaning and testing liquid in the cleaning tank 21 can be heated, thereby improving the cleaning efficiency.

[0051] Furthermore, the surface of the bracket 61 is also provided with an adapter 9. One end of the adapter 9 is connected to the outlet of the oil pump 3, and the other end of the adapter 9 is connected to the oil pipe 4. In this embodiment, since the oil pump 3 is installed inside the housing 1, if the oil pipe 4 is directly connected to the oil pump 3, the disassembly and assembly of the oil tank and the oil pump 3 will be cumbersome, requiring the bracket 61 to be disassembled. However, with the adapter 9, the oil pipe 4 can be directly plugged into the adapter 9, which is convenient to operate. When no testing is required, the oil pipe 4 can be disassembled and stored when the cover plate 5 is lowered, further reducing the overall size of the equipment.

[0052] Furthermore, the oil pipe 4 and the glass pipe 62 are respectively inserted into the end of the fuel injector 7, and a sealing ring is fitted onto the end of the fuel injector 7. In this embodiment, a plug-in structure is adopted for connection structures such as threaded connections and pipe clamp fastening, allowing the fuel injector 7 to be plugged in and out with one hand. This is especially suitable for scenarios where different models of fuel injectors 7 are frequently replaced, requiring no professional tools and greatly improving ease of use. The sealing ring at the end of the fuel injector 7 fills the plug-in gap through elastic deformation, improving the overall pipeline sealing and ensuring detection accuracy and effectiveness.

[0053] The above description is only an optional embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A cleaning and testing device for automotive fuel injectors, characterized in that, include: case; A cleaning tank is installed on the surface of the housing. An ultrasonic transducer is provided at the bottom of the cleaning tank. The cleaning tank is used to hold the cleaning and testing liquid. An oil pump is installed inside the housing. The inlet of the oil pump is connected to the cleaning tank. The oil pump is used to extract the cleaning and testing liquid in the cleaning tank. The outlet of the oil pump is connected to an oil pipe. A cover plate, hinged to the housing, and the cover plate is used to cover the cleaning tank; A glass tube assembly is installed on the side of the cover plate near the cleaning tank. The glass tube assembly includes a bracket and one or two glass tubes installed on the bracket. The outlet of the glass tube is connected to the cleaning tank, and the inlet of the glass tube is used to install an oil injector. The oil injector is connected to the oil pipe.

2. The automotive fuel injector cleaning and testing equipment according to claim 1, characterized in that, The glass tube is configured as one, and the bracket includes a slot for inserting the glass tube, the glass tube being detachably inserted into the slot.

3. The automotive fuel injector cleaning and testing equipment according to claim 2, characterized in that, The bracket is also provided with a connecting part for detachable connection with the cover plate. There are two connecting parts, which are symmetrically arranged on both sides of the bracket.

4. The automotive fuel injector cleaning and testing equipment according to claim 2, characterized in that, The cover plate has an open state and a closed state; When the cover is in the closed state, the cover and the glass tube are parallel to the surface of the housing, and the cover covers the opening of the cleaning tank; When the cover is in the open state, the cover and the glass tube are perpendicular to the surface of the housing, and the liquid outlet of the glass tube is directly opposite the opening of the cleaning tank.

5. The automotive fuel injector cleaning and testing equipment according to claim 1, characterized in that, A filter is also installed inside the housing. The filter is used to connect the cleaning tank and the oil pump. The inlet of the filter is connected to the cleaning tank, and the outlet of the filter is connected to the inlet of the oil pump.

6. The automotive fuel injector cleaning and testing equipment according to claim 1, characterized in that, A heating plate is also connected to the bottom of the cleaning tank.

7. The automotive fuel injector cleaning and testing equipment according to claim 1, characterized in that, The support surface is also provided with an adapter, one end of which is connected to the outlet of the oil pump, and the other end of which is connected to the oil pipe.

8. The automotive fuel injector cleaning and testing equipment according to claim 7, characterized in that, The end of the oil pipe is inserted into the adapter.

9. The automotive fuel injector cleaning and testing equipment according to claim 1, characterized in that, The oil pipe and the glass pipe are respectively inserted into the end of the fuel injector, and the end of the fuel injector is fitted with a sealing ring.

Images