Oil nozzle test box

Abstract

The utility model discloses an oil nozzle test box which comprises a box body and a control circuit board. The control circuit board comprises a function selection circuit board, a processing circuit board and an electric connection circuit board; the processing circuit board is provided with a processing circuit, and the processing circuit comprises a processing chip MCU, an identification driving module, a rotating speed driving module and a following driving module; and the identification driving module comprises one or more identification driving circuits. According to the utility model, the processing circuit board with the processing circuit is arranged to realize multifunctional driving, and the function selection circuit board is matched, so that the fuel injection nozzle test box not only can carry out type identification and driving detection on the fuel injection nozzle, but also can simulate the rotating speed and the working voltage required by the working of the fuel injection nozzle; the fuel injection states of the fuel injection nozzle under different working conditions can be accurately detected, the action of external equipment such as a fuel injection nozzle cleaning detector can be controlled, and the convenience and efficiency of detection and maintenance work are enhanced.

Description

Technical Field

[0001] This utility model relates to the technical field of fuel injector testing devices, and specifically to a fuel injector test box. Background Technology

[0002] In the field of automotive repair and engine performance testing, fuel injectors, as core components of the fuel system, directly affect the engine's combustion efficiency, emissions performance, and stability. Currently, most fuel injector testing equipment on the market is designed for single functions, such as only supporting the testing of electromagnetic fuel injectors. When testing piezoelectric fuel injectors is required, the testing equipment must be replaced, and the testing process relies on a complex combination of multiple devices, such as independent speed simulators, voltage controllers, and cleaning equipment controllers. This results in cumbersome operation, poor compatibility, low testing efficiency, and poor portability of the controllers, failing to meet the current testing needs of automotive repair. Utility Model Content

[0003] This utility model addresses the shortcomings of current technology by providing a fuel injector test box, aiming to solve the technical problems of limited fuel injector detection function and slow detection efficiency in existing technologies.

[0004] The technical solution adopted by this utility model to achieve the above objectives is as follows:

[0005] A fuel injector test box includes a box body and a control circuit board, wherein the control circuit board is disposed in the box body; the control circuit board includes a function selection circuit board, a processing circuit board and an electrical connection circuit board, wherein the function selection circuit board is electrically connected to the processing circuit board and the electrical connection circuit board.

[0006] The function selection circuit board is used for drive control, speed control, voltage control and detection control, thereby inputting control signals to the processing circuit board to drive the function;

[0007] The processing circuit board is used for injector identification, electromagnetic injector detection signal output, piezoelectric injector detection signal output, simulated engine speed signal and injector working voltage setting, and detecting external injector control signal input, so that the signal from the external injector can drive the injector electrically connected to the injector test box.

[0008] The electrical connection circuit board is used to provide multiple electrical connection channels for electrical connection with external fuel injectors, power supplies and equipment.

[0009] As a further improvement, the box body is provided with a panel, the panel is provided with multiple through holes, the function selection circuit board is provided with a display component and multiple control buttons, the display component and multiple control buttons are respectively disposed in the through holes; the multiple control buttons include a run stop button, a speed control button, a voltage control button, a check button and a power switch.

[0010] As a further improvement, the side of the housing is provided with multiple through holes, each of which is provided with a power interface, a pulse signal output interface, a data interface, a pulse control signal input port, and a device grounding interface. The power interface, pulse signal output interface, data interface, pulse control signal input port, and device grounding interface are all electrically connected to the electrical connection circuit board.

[0011] As a further improvement, the processing circuit board is provided with a processing circuit, which includes a processing chip MCU, a recognition drive module, a speed drive module and a follow drive module;

[0012] The processing chip MCU is used to receive the function selection signal from the function selection circuit board and to drive the processing circuit to operate;

[0013] The identification drive module is used to identify the type of fuel injector;

[0014] The speed drive module is used to simulate the output of speed signals in order to determine the working status of the fuel injector.

[0015] The follow-drive module is used to receive the fuel injector control signal from the external nozzle cleaning and testing instrument.

[0016] As a further improvement, the identification driving module includes one or more identification driving circuits, each including an electrical connection terminal, a conduction driving circuit, and a return current acquisition voltage divider circuit. The electrical connection terminal is used for electrical connection with the fuel injector. The conduction driving circuit is used for conduction control and forms a current loop with the return current acquisition voltage divider circuit. The return current acquisition voltage divider circuit is used to return the divided voltage to the processing chip MCU, thereby enabling the processing chip MCU to obtain the charging voltage change process of the fuel injector.

[0017] As a further improvement, the box body is also provided with a heat dissipation structure, which includes multiple heat dissipation mesh holes and a heat sink assembly. The heat dissipation mesh holes are disposed on the side wall of the box body. The box body is also provided with heat dissipation holes, and the heat sink assembly is disposed between the control circuit board and the heat dissipation holes.

[0018] As a further improvement, the box body is also provided with a support foot assembly, which has an anti-slip texture.

[0019] As a further improvement, the display component may be one of multiple indicator lights, a display screen, or multiple digital tubes.

[0020] Compared with the prior art, the above-mentioned one or more technical solutions in the fuel injector test box provided by the present invention have at least one of the following technical effects:

[0021] This invention achieves multi-functional driving by setting up a processing circuit board with processing circuitry. The processing circuitry includes a processing chip (MCU), an identification driving module, a speed driving module, and a follow driving module. This allows the fuel injector test box to not only identify and drive the type of fuel injector, but also simulate the speed and operating voltage required for fuel injector operation, accurately detect the fuel injection status of the fuel injector under different operating conditions, and control the actions of external devices such as fuel injector cleaning and testing instruments, further enhancing the convenience and efficiency of testing and maintenance. The identification driving module is compatible with the testing of various types of fuel injectors, allowing testing without changing equipment, reducing cumbersome equipment switching steps, and significantly improving testing efficiency and convenience. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model, 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 these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the overall structure of the fuel injector test box in this embodiment;

[0024] Figure 2 This is a rear view of the fuel injector test box in this embodiment;

[0025] Figure 3 This is a bottom view of the fuel injector test box in this embodiment;

[0026] Figure 4 This is an exploded view of the fuel injector test box in this embodiment;

[0027] Figure 5 This is a schematic diagram of the module connections of the control circuit board in this embodiment;

[0028] Figure 6 This is a circuit diagram of the identification driving circuit in this embodiment. Detailed Implementation

[0029] The following description is only a preferred embodiment of the present invention and does not limit the scope of protection of the present invention.

[0030] For examples, see the appendix. Figures 1-6 A fuel injector test box 1 includes a box body 2 and a control circuit board 3, wherein the control circuit board 3 is disposed within the box body 2; the control circuit board 3 includes a function selection circuit board 4, a processing circuit board 5, and an electrical connection circuit board 6, wherein the function selection circuit board 4 is electrically connected to the processing circuit board 5 and the electrical connection circuit board 6; the function selection circuit board 4 is used for drive control, speed control, voltage control, and detection control, thereby inputting control signals to the processing circuit board 5 for function drive; the processing circuit board 5 is used for fuel injector identification, electromagnetic fuel injector detection signal output, and pressure... The electric injector detection signal output, simulated engine speed signal, and injector working voltage setting functions, as well as detecting external injector control signal input, so that the signal from the external injector can drive the injector electrically connected to the injector test box 1; the electrical connection circuit board 6 is used to provide multiple electrical connection channels, thereby electrically connecting with external injectors, power supplies, and equipment; the function selection circuit board 4, processing circuit board 5, and electrical connection circuit board 6 are used to realize multi-functional operation of identifying, driving, detecting, and controlling the operation of the injector cleaning and testing instrument for one or more injectors, improving ease of use.

[0031] The housing 2 has a panel 20 with multiple through holes. The function selection circuit board 4 has a display component 21 and multiple control buttons 22, which are respectively disposed within the through holes. The multiple control buttons 22 include a run / stop button 220, a speed control button 221, a voltage control button 222, a check button 223, and a power switch 224. The power switch 224 is used for power-on control. The voltage control button 222 is used for adjusting the output voltage. The check button 223 is used for detecting the connection status of the fuel injectors after electrical connection, improving the efficiency of electrical connection detection. The speed control button 221 is used for setting the speed in active mode. The display component 21 can be one of multiple indicator lights, a display screen, or multiple digital tubes.

[0032] The side of the housing 2 is provided with multiple through holes, each of which is provided with a power interface 23, a pulse signal output interface 24, a data interface 25, a pulse control signal input port 26, and a device grounding interface 27. The power interface 23, the pulse signal output interface 24, the data interface 25, the pulse control signal input port 26, and the device grounding interface 27 are all electrically connected to the electrical connection circuit board 6.

[0033] The processing circuit board 5 is equipped with a processing circuit 50, which includes a processing chip MCU 500, an identification drive module 501, a speed drive module 502, and a follow drive module 503. The processing chip MCU 500 is used to receive the function selection signal from the function selection circuit board 4 and to drive the processing circuit 50 to operate. The identification drive module 501 is used to identify the type of fuel injector. The speed drive module 502 is used to simulate the output of a speed signal to determine the working state of the fuel injector. The follow drive module 503 is used to control the operation of an external nozzle cleaning and testing instrument. The processing circuit 50 provides a stable drive voltage and drive signal to the fuel injector test box 1, as well as simulates the speed and working voltage required for the fuel injector to operate. This allows for more accurate detection of the fuel injection state of the fuel injector under different automotive operating conditions, helping to quickly determine the performance state of the fuel injector and improving the convenience of testing.

[0034] The identification drive module 501 includes one or more identification drive circuits 501a. Each identification drive circuit 501a includes an electrical connection terminal, a conduction drive circuit, and a return current acquisition voltage divider circuit. The electrical connection terminal is used for electrical connection with the fuel injector. The conduction drive circuit is used for conduction control, forming a current loop in conjunction with the return current acquisition voltage divider circuit. The return current acquisition voltage divider circuit is used to return the divided voltage to the processing chip MCU 500, thereby enabling the processing chip MCU 500 to obtain the charging voltage change process of the fuel injector. The electrical connection terminal is electrically connected to the pulse signal output interface 24. The identification drive circuit 501a includes fuel injector diagnostic identification actions, enabling the detection of different types of automotive fuel injectors, improving compatibility, increasing testing efficiency, and reducing testing costs.

[0035] The box body 2 is also provided with a heat dissipation structure 24, which includes a plurality of heat dissipation mesh holes 240 and a heat sink assembly 241. The heat dissipation mesh holes 240 are disposed on the side wall of the box body 2. The box body 2 is also provided with heat dissipation holes. The heat sink assembly 241 is disposed between the control circuit board 3 and the heat dissipation holes. The heat dissipation structure 24 is used to dissipate heat inside the box body 2 to prevent the internal temperature from being too high and affecting its use.

[0036] The box body 2 is also provided with a support foot assembly 7, which has an anti-slip texture. The support foot assembly 7 includes multiple feet, and the anti-slip texture is set on the bottom of the feet. The support foot assembly 7 is used for anti-slip purposes. The box body 2 can also be provided with a handle as needed, which facilitates carrying.

[0037] The working principle of this utility model is as follows: The injector is electrically connected to the fuel injector and external power supply via the cable. Power is supplied via the power switch. First, press the inspection button and observe the display component. The display component clearly indicates whether the fuel injector is in a disconnected state, a connection failure state, a normal connection and normal operation state, or a normal connection but abnormal operation state. After the test is completed, press the run stop button to perform a drive test, and press the speed control button to set the speed. When the device is in active mode, pressing the speed control button once will cause the fuel injector test box to output a speed signal, and the speed will increase by 500 rpm and cycle. When the device is in follow mode, the speed control button cannot be used. The voltage is adjusted via the voltage control button. When the fuel injector test box is connected to an electromagnetic fuel injector, the voltage control button cannot adjust the voltage. When the fuel injector test box is connected to a piezoelectric fuel injector, pressing the voltage control button once will increase the output voltage by one level, increasing to five levels and cycling.

[0038] This invention achieves multi-functional driving by setting up a processing circuit board with processing circuitry. The processing circuitry includes a processing chip (MCU), an identification driving module, a speed driving module, and a follow driving module. This allows the fuel injector test box to not only identify and drive the type of fuel injector, but also simulate the speed and operating voltage required for fuel injector operation, accurately detect the fuel injection status of the fuel injector under different operating conditions, and control the actions of external devices such as fuel injector cleaning and testing instruments, further enhancing the convenience and efficiency of testing and maintenance. The identification driving module is compatible with the testing of various types of fuel injectors, allowing testing without changing equipment, reducing cumbersome equipment switching steps, and significantly improving testing efficiency and convenience.

[0039] This utility model is not limited to the above-described embodiments. Other fuel injector test boxes obtained by using the same or similar structures or devices as the above-described embodiments of this utility model are all within the protection scope of this utility model.

Claims

1. An oil nozzle test cartridge, characterized by: The fuel nozzle test box comprises a box body and a control circuit board arranged in the box body; the control circuit board comprises a function selection circuit board, a processing circuit board and an electric connection circuit board, and the function selection circuit board is electrically connected with the processing circuit board and the electric connection circuit board; The function selection circuit board is used for driving control, speed control, voltage control and detection control, so as to input control signals to the processing circuit board for driving functions; The processing circuit board is used for nozzle identification, electromagnetic fuel nozzle detection signal output, piezoelectric fuel nozzle detection signal output, analog engine speed signal and fuel nozzle working voltage setting, and detection of external fuel nozzle control signal input, so that the signal of the external fuel nozzle can drive the fuel nozzle electrically connected with the fuel nozzle test box; The electric connection circuit board is used for providing a plurality of electric connection channels, so as to be electrically connected with the external fuel nozzle, power supply and equipment.

2. The fuel nozzle test box of claim 1, wherein: The box body is provided with a panel, the panel is provided with a plurality of through holes, the function selection circuit board is provided with a display assembly and a plurality of control buttons, and the display assembly and the plurality of control buttons are arranged in the through holes respectively; the plurality of control buttons comprise a running stop button, a speed control button, a voltage control button, an inspection button and a power switch.

3. The fuel nozzle test box of claim 2, wherein: The side of the box body is provided with a plurality of through holes, the through holes are respectively provided with a power supply interface, a pulse signal output interface, a data interface, a pulse control signal input port and an equipment grounding interface, and the power supply interface, the pulse signal output interface, the data interface, the pulse control signal input port and the equipment grounding interface are electrically connected with the electric connection circuit board.

4. The fuel nozzle test box of claim 3, wherein: The processing circuit board is provided with a processing circuit, and the processing circuit comprises a processing chip MCU, an identification driving module, a speed driving module and a following driving module; The processing chip MCU is used for receiving the function selection signal of the function selection circuit board and feedback driving the processing circuit to act; The identification driving module is used for identifying the type of the fuel nozzle; The speed driving module is used for analog speed signal output, so as to judge the working state of the fuel nozzle; The following driving module is used for receiving the fuel nozzle control signal of the external nozzle cleaning detector.

5. The fuel nozzle test box of claim 4, wherein: The identification driving module comprises one or more identification driving circuits, the identification driving circuit comprises an electric connection end, a conduction driving circuit and a backflow collection and voltage division circuit; the electric connection end is used for electrically connecting with the fuel nozzle; the conduction driving circuit is used for conduction control, and cooperates with the backflow collection and voltage division circuit to form a current loop; the backflow collection and voltage division circuit is used for backflowing the divided voltage to the processing chip MCU, so that the processing chip MCU obtains the charging voltage change process of the fuel nozzle.

6. The fuel nozzle test box of claim 5, wherein: The box body is also provided with a heat dissipation structure, the heat dissipation structure comprises a plurality of heat dissipation mesh holes and a heat sink assembly, and the heat dissipation mesh holes are arranged on the side wall of the box body; the box body is also provided with a heat dissipation hole, and the heat sink assembly is arranged between the control circuit board and the heat dissipation hole.

7. The fuel nozzle test box of claim 6, wherein: The box body is also provided with a support foot assembly, and the support foot assembly is provided with anti-skid texture.

8. The fuel nozzle test box of claim 2, wherein: The display assembly can be one of a plurality of indicator lights, a display screen, or a plurality of nixie tubes. The display assembly can be one of a plurality of indicator lights, a display screen, or a plurality of nixie tubes.

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