Automobile oil nozzle cleaning detection circuit and automobile oil nozzle cleaning machine

Abstract

The utility model discloses an automobile oil nozzle cleaning detection circuit and an automobile oil nozzle cleaning machine. The circuit comprises a control module, a multi-voltage output power supply module, an oil nozzle control module, a current sampling module and a cleaning module. The control module is connected with the control end of the power supply module; the oil nozzle control module is used for controlling an automobile oil nozzle, the output end of the power supply module is connected with the power end of the oil nozzle control module, and the oil nozzle control module is used for controlling the automobile oil nozzle. The current sampling module is used for sampling the current of the oil nozzle cleaning module, and the output end of the current sampling module is connected with the feedback end of the control module; the control module is connected with the control end of the cleaning module. The device can adapt to automobile oil nozzles with different voltages, the application range is wide, and voltage adaptation errors are avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of automobile cleaning, in particular to an automobile oil injection nozzle cleaning detection circuit and an automobile oil injection nozzle cleaning machine. BACKGROUND

[0002] Cleaning of automobile oil injection nozzles is an important step in maintaining engine performance and fuel efficiency. Over time, the oil injection nozzles can become clogged due to impurities, carbon or gum deposits in the fuel, leading to uneven fuel injection, incomplete combustion and other problems, which in turn affect the power output, fuel consumption and emissions of the engine. Regular cleaning of the oil injection nozzles can effectively prevent these problems and ensure the best working condition of the engine.

[0003] During the cleaning process of the automobile oil injection nozzles, power needs to be supplied to the automobile oil injection nozzles. The existing automobile oil injection nozzle cleaning machine has the defect that it can only output 12V power. However, most automobiles using in-cylinder direct injection technology use 70V or 120V high-pressure oil injection nozzles. Therefore, the automobile oil injection nozzle cleaning machine that can only output 12V power cannot be adapted to high-pressure oil injection nozzles, and the range of application is narrow. Moreover, once the voltage adaptation is wrong, the equipment will be damaged. CONTENT OF THE INVENTION

[0004] The present application aims to at least solve one of the technical problems existing in the prior art. To this end, the present application provides an automobile oil injection nozzle cleaning detection circuit and an automobile oil injection nozzle cleaning machine, which can adapt to automobile oil injection nozzles of different voltages, have a wide range of application, and avoid voltage adaptation errors.

[0005] The automobile oil injection nozzle cleaning detection circuit according to the first aspect of the present application comprises: a control module; a multi-voltage output power supply module, the control module being connected to the control end of the power supply module for switching the output voltage of the power supply module; an oil injection nozzle control module, the output end of the power supply module being connected to the power supply end of the oil injection nozzle control module, the oil injection nozzle control module being used for controlling the automobile oil injection nozzle; a current sampling module, the current sampling module being used for sampling the current of the oil injection nozzle cleaning module, the output end of the current sampling module being connected to the feedback end of the control module; and a cleaning module, the control module being connected to the control end of the cleaning module.

[0006] According to some embodiments of the present application, the power supply module comprises a 12V power supply end, a voltage boosting circuit and a switching power supply circuit, the 12V power supply end being connected to the first input end of the switching power supply circuit and the input end of the voltage boosting circuit respectively, the voltage boosting circuit being used for converting the 12V voltage into a 70V or 120V voltage output, the output end of the voltage boosting circuit being connected to the second input end of the switching power supply circuit, the control module being connected to the control end of the voltage boosting circuit and the control end of the switching power supply circuit respectively, and the output end of the switching power supply circuit being connected to the power supply end of the oil injection nozzle control module.

[0007] According to some embodiments of the present application, the switching power supply circuit comprises a power chip U5, a MOS tube Q18, a MOS tube Q21, a high-voltage power supply end VH1, a diode D30, a diode D31 and a power supply output end VP1, the output end of the power chip U5 is connected to the gate of the MOS tube Q18 and the gate of the MOS tube Q21 respectively, the output end of the voltage boosting circuit is connected to the drain of the MOS tube Q18, the source of the MOS tube Q18 is connected to the high-voltage power supply end VH1, the high-voltage power supply end VH1 is connected to the drain of the MOS tube Q21, the source of the MOS tube Q21 is grounded, the high-voltage power supply end VH1 is connected to the anode of the diode D31, the cathode of the diode D31 is connected to the power supply output end VP1 through a resistor R82, the 12V power supply end is connected to the anode of the diode D30, the cathode of the diode D30 is connected to the power supply output end VP1 through a resistor R81, and the power supply output end VP1 is connected to the power supply end of the fuel injector control module.

[0008] According to some embodiments of the present application, the switching power supply circuit further comprises a triode Q26 and a MOS tube Q25, the control module is connected to the base of the triode Q26 through a resistor R91, the emitter of the triode Q26 is grounded, the collector of the triode Q26 is connected to the gate of the MOS tube Q25, the gate of the MOS tube Q25 is connected to the 12V power supply end through a resistor R86, the drain of the MOS tube Q25 is connected to the power supply output end VP1 through a resistor R85, and the source of the MOS tube Q25 is grounded.

[0009] According to some embodiments of the present application, the fuel injector control module comprises a plurality of fuel injector drive circuits, each of which is connected to two automobile fuel injectors.

[0010] According to some embodiments of the present application, the cleaning module comprises at least one of an ultrasonic cleaning module, a disassembly-free cleaning module and a reverse cleaning module.

[0011] According to some embodiments of the present application, further comprising a key and a display screen, which are connected to the control module respectively.

[0012] According to some embodiments of the present application, further comprising a fuel injection amount detection module, which is used to obtain the fuel injection amount of the automobile fuel injector, and is connected to the feedback end of the control module.

[0013] According to some embodiments of the present application, further comprising an alarm module, which is connected to the control module for alarming when an abnormal current is detected.

[0014] The automobile fuel nozzle cleaning machine according to the second aspect of the present application comprises the automobile fuel nozzle cleaning detection circuit.

[0015] The automobile fuel nozzle cleaning detection circuit and the automobile fuel nozzle cleaning machine according to the present application have at least the following beneficial effects:

[0016] In the present application, the fuel nozzle control module is powered by the power supply module. The control module first outputs a voltage pulse to the fuel nozzle control module through the power supply module, and samples the current of the fuel nozzle control module through the current sampling module. According to the current, it can be determined whether the output voltage matches the current automobile fuel nozzle. If not, the control module controls the power supply module to switch the output voltage until the output voltage matches the automobile fuel nozzle. When the matching is completed, the control module controls the fuel nozzle control module and the cleaning module to clean the automobile fuel nozzle. The present application can adapt to automobile fuel nozzles of different voltages, has a wide range of applications, and avoids voltage adaptation errors.

[0017] Additional aspects and advantages of the present application will be in part apparent and in part pointed out hereinafter. BRIEF DESCRIPTION OF DRAWINGS

[0018] The present application will be further described below in conjunction with the drawings and examples, wherein:

[0019] Figure 1 The figure is a principle block diagram of the automobile fuel nozzle cleaning detection circuit in the present application;

[0020] Figure 2 The figure is a circuit diagram of the control module in the present application;

[0021] Figure 3 The figure is a circuit diagram of the boost circuit in the present application;

[0022] Figure 4 The figure is a circuit diagram of the switching power supply circuit in the present application;

[0023] Figure 5 The figure is a circuit diagram of the fuel nozzle interface in the fuel nozzle control module in the present application;

[0024] Figure 6 The figure is a circuit diagram of the electromagnetic valve control circuit in the fuel nozzle control module in the present application. DETAILED DESCRIPTION

[0025] Embodiments of the present application are described below in detail with reference to the accompanying drawings, wherein the same or similar numerals represent the same or similar elements or elements having the same or similar functions throughout the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as a limitation on the present application.

[0026] In the description of the present application, it should be understood that the orientation description, such as the orientation or position relationship indicated by up, down, etc. is based on the orientation or position relationship shown in the drawings, which is only for the purpose of facilitating the description of the present application and simplifying the description, and is not intended to indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0027] In the description of the present application, multiple refers to more than two. If there is a description of first, second, it is only for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or the sequence of technical features indicated.

[0028] In the description of the present application, unless otherwise explicitly limited, the words such as arrangement, installation, connection, etc. should be broadly understood, and those skilled in the art can reasonably determine the specific meaning of the above words in the present application in combination with the specific content of the technical solution.

[0029] Referring to Figure 1 As shown in the drawings, a kind of automobile fuel injection nozzle cleaning detection circuit, comprising: control module, multiple voltage output power module, fuel injection nozzle control module, current sampling module and cleaning module.Specifically, the output end of power module can output multiple voltages, control module is connected to the control end of power module to be used to switch the output voltage of power module;Fuel injection nozzle control module is used to control automobile fuel injection nozzle, the output end of power module is connected to the power supply end of fuel injection nozzle control module, and fuel injection nozzle control module is used to control automobile fuel injection nozzle;Current sampling module, current sampling module is used to sample the current of fuel injection nozzle cleaning module, and the output end of current sampling module is connected to the feedback end of control module;Control module is connected to the control end of cleaning module.

[0030] In the embodiments of the present application, the fuel injection nozzle control module is powered by the power module, the control module first outputs a voltage pulse to the fuel injection nozzle control module by the power module, and the current of the fuel injection nozzle control module is sampled by the current sampling module. According to the current size, it can be determined whether the output voltage matches the current automobile fuel injection nozzle, if not, the control module controls the power module to switch the output voltage, until the output voltage matches the automobile fuel injection nozzle. When the matching is completed, the control module controls the fuel injection nozzle control module and the cleaning module to realize the cleaning of the automobile fuel injection nozzle. The present application can adapt to different voltage automobile fuel injection nozzle, wide application range, avoid voltage adaptation error.

[0031] In this embodiment, referring to Figure 2 The control module adopts a control mainboard with an MCU, the acquisition of current sampling data and the sending of control commands are realized through the MCU, the power supply module can realize the output of multiple voltages to meet the needs of automobile fuel injectors of different voltage grades, and the output of the power supply module is controlled by the MCU. The function of the fuel injector control module is to connect the solenoid valve of the automobile fuel injector, so as to realize the control of the automobile fuel injector during the cleaning process.

[0032] When the MCU controls the power supply module to output a voltage pulse to the fuel injector control module and samples the current of the fuel injector control module through the current sampling module, the current can be directly displayed through the display screen connected to the control mainboard, or transmitted to the upper computer for judgment by comparing the current with the threshold value. The machine can determine whether the selected voltage and the actual voltage of the fuel injector match, and only when they match can the fuel injector start working normally according to the current voltage. If they do not match, the fuel injector will switch to the voltage of another gear and repeat the above steps until it matches. Alternatively, the MCU can automatically determine according to the preset program.

[0033] The above cleaning module can clean the automobile fuel injector by ultrasonic cleaning or other cleaning methods, and the cleaning module is controlled by the MCU and linked with the fuel injector control module.

[0034] In some embodiments, the power supply module includes a 12V power supply end, a boost circuit, and a switching power supply circuit. The 12V power supply end is connected to the first input end of the switching power supply circuit and the input end of the boost circuit, respectively. The boost circuit is used to convert the 12V voltage into a 70V or 120V voltage output. The output end of the boost circuit is connected to the second input end of the switching power supply circuit. The control module is connected to the control end of the boost circuit and the control end of the switching power supply circuit, respectively. The output end of the switching power supply circuit is connected to the power supply end of the fuel injector control module.

[0035] In this embodiment, the power supply module converts the 12V power supply into a 70V or 120V voltage output through the boost circuit, and the control module realizes the output switching of different voltages through the switching power supply circuit, so that the power supply module can match the 12V, 70V or 120V voltage output, and has wide adaptability.

[0036] Specifically, the 12V power supply end is a self-provided power supply end, as shown in Figure 3 The boost circuit is composed of a switching chip U4, a transformer L1 and related auxiliary components. V120 is the output end of the boost circuit. The MCU realizes the output voltage regulation of the transformer L1 through the switching chip U4, and the V120 end can output a 70V or 120V voltage. Referring to Figure 4As shown, the switch power supply circuit in the embodiment of the application includes a power supply chip U5, a MOS tube Q18, a MOS tube Q21, a high-voltage power supply end VH1, a diode D30, a diode D31 and a power supply output end VP1. The output end of the power supply chip U5 is connected to the gate of the MOS tube Q18 and the gate of the MOS tube Q21 respectively. The output end V120 of the boost circuit is connected to the drain of the MOS tube Q18. The source of the MOS tube Q18 is connected to the high-voltage power supply end VH1. The high-voltage power supply end VH1 is connected to the drain of the MOS tube Q21. The source of the MOS tube Q21 is grounded. The high-voltage power supply end VH1 is connected to the anode of the diode D31. The cathode of the diode D31 is connected to the power supply output end VP1 through a resistor R82. The anode of the diode D30 is connected to the 12V power supply end. The cathode of the diode D30 is connected to the power supply output end VP1 through a resistor R81. The power supply output end VP1 is connected to the power supply end of the fuel injection nozzle control module.

[0037] In the embodiment, the 12V power supply output can be regarded as a low-voltage output, and the 70V and 120V power supply outputs can be regarded as high-voltage outputs. The power supply output end VP1 can realize three voltage outputs of 12V, 70V and 120V through the cooperation of the switch power supply circuit and the boost circuit. When the connected fuel injection nozzle is a 12V automobile fuel injection nozzle, a low-voltage output of 12V is needed. At this time, the MCU controls the MOS tube Q18 to be disconnected through the power supply chip U5. The high-voltage power supply end VH1 has no voltage, and the voltage of the power supply output end VP1 is 12V, which is used to supply power to the 12V automobile fuel injection nozzle. When the connected fuel injection nozzle is a 70V or 120V automobile fuel injection nozzle, a high-voltage output of 70V or 120V is needed. At this time, the MCU controls the MOS tube Q18 to be connected through the power supply chip U5. The high-voltage power supply end VH1 outputs a voltage of 70V or 120V, which is input to the power supply output end VP1 through the diode D31. At this time, the power supply output end VP1 outputs a voltage of 70V or 120V to supply power to the high-voltage automobile fuel injection nozzle.

[0038] In some embodiments, the switch power supply circuit further includes a triode Q26 and a MOS tube Q25. The control module is connected to the base of the triode Q26 through a resistor R91. The emitter of the triode Q26 is grounded. The collector of the triode Q26 is connected to the gate of the MOS tube Q25. The gate of the MOS tube Q25 is connected to the 12V power supply end through a resistor R86. The drain of the MOS tube Q25 is connected to the power supply output end VP1 through a resistor R85. The source of the MOS tube Q25 is grounded.

[0039] In the embodiment, when the power supply output end VP1 outputs a voltage of 120V, the MCU can ensure the integrity of the high-voltage waveform output, ensure the smoothness of the waveform and improve the control precision of the fuel injection nozzle, thereby improving the cleaning effect, by controlling the conduction of the triode Q26 and the MOS tube Q25.

[0040] In some embodiments, the fuel nozzle control module comprises a plurality of fuel nozzle drive circuits, each of which is connected to two automobile fuel nozzles and can simultaneously control multiple automobile fuel nozzles, which is convenient.

[0041] It should be noted that when the fuel nozzle control module comprises a plurality of fuel nozzle drive circuits, the switching power supply circuit in the power supply module is also multiple, each switching power supply circuit corresponds to a fuel nozzle drive circuit, as shown in Figure 5 and Figure 6 The fuel nozzle drive circuit in this embodiment is three, each corresponding to two nozzles. Taking one fuel nozzle drive circuit as an example, the power output end VP1 of the power supply module is connected to the fuel nozzle interface J3, V1 and V2 are respectively connected to the two-way electromagnetic valve control circuit, and the two-way electromagnetic valve control circuit is composed of MOS tube Q19, MOS tube Q22, triode Q20, triode Q23, and a plurality of resistors, capacitors, diodes and other components. J105 and J205 are respectively the power supply ends of one-way electromagnetic valve. Among them, the resistor R74 is a current sampling resistor, and the Sensor1 end inputs the voltage of the current sampling resistor to the MCU, thereby realizing the collection of the current of the automobile fuel nozzle.

[0042] In some embodiments, the cleaning module comprises at least one of an ultrasonic cleaning module, a disassembly-free cleaning module and a reverse cleaning module, and the cleaning effect can be improved by selecting multiple cleaning modules.

[0043] In some embodiments, the application also comprises a key and a display screen, and the key and the display screen are respectively connected to the control module. The display screen can help the staff to check the current sampling data, so as to judge whether the selected voltage and the actual voltage of the fuel nozzle match. The key can be used to manually switch the output voltage, which is convenient to operate.

[0044] In some embodiments, a fuel injection amount detection module is further included, which is used to obtain the fuel injection amount of the automobile fuel nozzle, and the fuel injection amount detection module is connected to the feedback end of the control module, so as to facilitate the detection of the automobile fuel nozzle after cleaning, thereby judging the cleaning effect.

[0045] In some embodiments, an alarm module is further included, and the control module is connected to the alarm module to alarm when the current is abnormal. In this embodiment, the alarm module can alarm by using a number tube. When the voltage does not match, the MCU alarms through the alarm module to remind the staff to switch the output voltage.

[0046] The application also relates to an automobile fuel nozzle cleaning machine comprising the automobile fuel nozzle cleaning and detection circuit of the above-mentioned embodiments.

[0047] The embodiments of the present application are described in detail above with reference to the drawings, but the present application is not limited to the above-described embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the spirit of the present application.

Claims

1. An automotive fuel injector cleaning detection circuit, comprising: The application relates to a fuel injection nozzle cleaning device, which comprises the following parts: a control module; a multi-voltage output power supply module, wherein the control module is connected to the control end of the power supply module for switching the output voltage of the power supply module; a fuel injection nozzle control module, wherein the output end of the power supply module is connected to the power supply end of the fuel injection nozzle control module, and the fuel injection nozzle control module is used for controlling the automobile fuel injection nozzle; a current sampling module, wherein the current sampling module is used for sampling the current of the fuel injection nozzle cleaning module, and the output end of the current sampling module is connected to the feedback end of the control module; a cleaning module, wherein the control module is connected to the control end of the cleaning module.

2. The automotive fuel injector cleaning detection circuit of claim 1, wherein, The power supply module comprises a 12V power supply end, a step-up circuit and a switching power supply circuit, the 12V power supply end is connected to the first input end of the switching power supply circuit and the input end of the step-up circuit respectively, the step-up circuit is used for converting the 12V voltage into 70V or 120V voltage output, the output end of the step-up circuit is connected to the second input end of the switching power supply circuit, the control module is connected to the control end of the step-up circuit and the control end of the switching power supply circuit respectively, and the output end of the switching power supply circuit is connected to the power supply end of the fuel injection nozzle control module.

3. The automotive fuel injector wash detection circuit of claim 2, wherein, The switching power supply circuit comprises a power supply chip U5, MOS tubes Q18 and Q21, a high-voltage power supply end VH1, diodes D30 and D31 and a power supply output end VP1, the output end of the power supply chip U5 is connected to the gate of the MOS tube Q18 and the gate of the MOS tube Q21 respectively, the output end of the step-up circuit is connected to the drain of the MOS tube Q18, the source of the MOS tube Q18 is connected to the high-voltage power supply end VH1, the high-voltage power supply end VH1 is connected to the drain of the MOS tube Q21, the source of the MOS tube Q21 is grounded, the high-voltage power supply end VH1 is connected to the anode of the diode D31, the cathode of the diode D31 is connected to the power supply output end VP1 through a resistor R82, the 12V power supply end is connected to the anode of the diode D30, the cathode of the diode D30 is connected to the power supply output end VP1 through a resistor R81, and the power supply output end VP1 is connected to the power supply end of the fuel injection nozzle control module.

4. The automotive fuel injector wash detection circuit of claim 3, wherein, The switching power supply circuit further comprises a triode Q26 and a MOS tube Q25, the control module is connected to the base of the triode Q26 through a resistor R91, the emitter of the triode Q26 is grounded, the collector of the triode Q26 is connected to the gate of the MOS tube Q25, the gate of the MOS tube Q25 is connected to the 12V power supply end through a resistor R86, the drain of the MOS tube Q25 is connected to the power supply output end VP1 through a resistor R85, and the source of the MOS tube Q25 is grounded.

5. The automotive fuel injector wash detection circuit of claim 1, wherein, The fuel injection nozzle control module comprises a plurality of fuel injection nozzle drive circuits, each fuel injection nozzle drive circuit is connected to two automobile fuel injection nozzles.

6. The automotive fuel injector wash detection circuit of claim 1, wherein, The cleaning module comprises at least one of an ultrasonic cleaning module, a disassembly-free cleaning module and a reverse cleaning module.

7. The automotive fuel injector wash detection circuit of claim 1, wherein, The device further comprises a key and a display screen, which are connected to the control module respectively.

8. The automotive fuel injector wash detection circuit of claim 1, wherein, The oil injection amount detection module is connected to the feedback end of the control module to acquire the oil injection amount of the automobile oil injection nozzle.

9. The automotive fuel injector wash detection circuit of claim 1, wherein, The alarm module is connected to the control module to give an alarm prompt when an abnormal current is detected.

10. An automotive fuel injector cleaning machine characterized by, The automobile oil injection nozzle cleaning detection circuit according to any one of claims 1 to 8 is provided.

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