A spray system for a particulate filter regeneration process and method of operation thereof

Abstract

The application provides a spraying system for a particle collector regeneration process and a working method thereof, relates to the field of diesel engine fuel metering spraying heating, and adopts the scheme that: the spraying system comprises a filter, a fuel metering assembly and a fuel spraying assembly which are sequentially connected, the filter is communicated with a fuel pipe of an engine through a fuel supply pipe, further comprises a heating assembly, the heating assembly is a hot water pipe, a water inlet of the hot water pipe is provided with a solenoid valve, the solenoid valve is communicated with an engine water pump, the solenoid valve is electrically connected with a vehicle control system, a water outlet of the hot water pipe is communicated with an engine water tank, a fuel measuring sensor is arranged in the fuel metering assembly, the fuel measuring sensor can measure a fuel temperature, and the fuel measuring sensor is electrically connected with the vehicle control system. The application can avoid the problem that diesel in a fuel pipeline and a hydrocarbon spraying unit pipeline will appear waxing in a low-temperature environment, can carry out a regeneration process, and ensures normal work of a particle trap.

Description

Technical Field

[0001] This invention relates to the field of fuel metering injection heating for diesel engines, and more particularly to an injection system and its operating method for a particulate collector regeneration process. Background Technology

[0002] To reduce environmental pollution, there are strict requirements on the carbon particulate content in vehicle diesel engine exhaust. To reduce the amount of carbon particles in the exhaust, a particulate filter is installed in the diesel engine aftertreatment system. The particulate filter can collect carbon particles. To ensure the particulate filter's ability to collect carbon particles, the carbon particles in the particulate filter must be treated periodically. This treatment process is called the regeneration process. When the vehicle control system determines that regeneration treatment is needed based on the carbon particle calculation model, it will start the regeneration program. That is, diesel fuel in the engine's fuel line is injected into the front end of the oxidation catalyst through the hydrocarbon injection system. After being fully mixed with the exhaust gas of the diesel engine, the exhaust temperature is increased by the oxidation effect of the oxidation catalyst, thereby oxidizing the carbon soot particles collected in the particulate filter and cleaning the carbon particles in the particulate filter.

[0003] In cold winters, when temperatures are low, diesel fuel remaining in the fuel lines and hydrocarbon injection system lines of vehicles will wax. This prevents the hydrocarbon injection system from injecting fuel normally, causing the particulate filter to fail to regenerate. Consequently, the carbon particulates in the diesel engine exhaust exceed the standard, resulting in environmental pollution.

[0004] Therefore, given the current state of the existing technology, it is an urgent problem to develop a spray system and its working method for the regeneration process of particle collectors. Summary of the Invention

[0005] To overcome the problem of wax formation in diesel fuel lines and hydrocarbon injection unit lines in the prior art, this invention provides an injection system and its operating method for the particulate matter collector regeneration process. This system can prevent wax formation in diesel fuel lines and hydrocarbon injection unit lines in low-temperature environments, enable the regeneration process, and ensure the normal operation of the particulate matter collector.

[0006] The technical solution adopted by this invention to solve the above-mentioned technical problems is: an injection system for the regeneration process of a particulate filter, comprising a filter, a fuel metering component, and a fuel injection component connected in sequence. The filter is connected to the engine's fuel line via a fuel supply pipe. The system also includes a heating component containing a hot water pipe. An electromagnetic valve is installed at the inlet of the hot water pipe, connected to the engine water pump and electrically connected to the vehicle control system. The heated water in the hot water pipe flows back to the engine water tank after passing through the fuel metering component and the fuel injection component. A fuel measurement sensor is installed within the fuel metering component, capable of measuring fuel temperature. The fuel measurement sensor is electrically connected to the vehicle control system. Through the cooperation of the vehicle control system, the heating component, and the fuel measurement sensor, heating can be performed according to the fuel temperature, preventing low temperatures from causing diesel fuel to wax and preventing the fuel injection component from functioning properly. This ensures the regeneration process can continue, guarantees the normal operation of the particulate filter, and prevents exhaust gas pollution of the environment.

[0007] Furthermore, the hot water pipe includes a first branch pipe and a second branch pipe. The first branch pipe connects to the engine water tank after passing through the fuel metering assembly, and the second branch pipe connects to the engine water tank after passing through the fuel injection assembly. Both the first and second branch pipes are equipped with a one-way valve, which is open in the direction away from the engine water tank. Heating the fuel metering assembly and the fuel injection assembly through the first and second branch pipes respectively can improve the heating speed and quickly prevent the diesel fuel from waxing.

[0008] Furthermore, the fuel metering assembly includes a housing with a fuel inlet pipe. A shut-off valve and a metering valve are sequentially connected to the fuel inlet pipe. Both the shut-off valve and the metering valve are electrically connected to the vehicle control system. The metering valve is connected to a fuel outlet pipe, which is located on the housing. A branch pipe penetrates the housing and has a serpentine structure inside the housing. This S-shaped branch pipe allows for rapid heat transfer, accelerating the rate at which the fuel temperature within the fuel metering assembly rises.

[0009] Furthermore, the fuel injection assembly includes a second one-way valve and a nozzle connected in sequence. The second one-way valve is directed towards the nozzle and is electrically connected to the vehicle control system. The second one-way valve is also connected to the fuel outlet pipe. The nozzle is equipped with a heating chamber. The second branch pipe is connected to the water inlet pipe of the heating chamber, and the water outlet pipe of the heating chamber is connected to the engine radiator. Heat transfer can be rapidly achieved through the second branch pipe and the heating chamber, accelerating the temperature rise of the fuel injection assembly.

[0010] Furthermore, the fuel measurement sensor is a temperature and pressure sensor, positioned between the shut-off valve and the metering valve. This sensor also detects fuel pressure. A downstream pressure sensor is installed in the fuel outlet pipe to detect the fuel pressure within the pipe, and this sensor is electrically connected to the control system. By detecting the pressure at both locations and calculating the fuel pressure difference, the vehicle control system can determine if the fuel outlet pipe is blocked by wax buildup. If blockage occurs, the heating element is activated. This double-safety measure, combined with relying solely on fuel temperature for activation, enhances the reliability of the system's injection.

[0011] Furthermore, the heating assembly also includes an electrically connected power supply module and an electric heating harness, the electric heating harness being disposed on the fuel supply pipe, the fuel inlet pipe, and the fuel outlet pipe, and the power supply module being electrically connected to the vehicle control system. The electric heating harness further improves the efficiency of fuel heating.

[0012] Furthermore, the heating assembly also includes a temperature sensor located at the inlet of the hot water pipe. The temperature sensor detects the temperature of the heated water and is electrically connected to the vehicle control system, which can control the engine to enter a warm-up mode. The warm-up mode increases the temperature of the heated water by using the engine. The cooperation between the temperature sensor and the vehicle control system ensures the heating water temperature is maintained, guaranteeing effective and rapid heating.

[0013] The present invention also provides a method for operating a spray system for a particulate collector regeneration process, the method comprising the following steps:

[0014] S01: The vehicle control system determines whether it needs to enter the regeneration process;

[0015] S02: When the regeneration process is required, the fuel measurement sensor and the downstream pressure sensor detect the temperature and pressure of the fuel at the corresponding location and transmit the detection results to the vehicle control system.

[0016] S03: When the vehicle control system determines that the fuel measurement sensor detects that the fuel temperature is not lower than the set temperature t1 and the vehicle control system determines that there is no blockage in the fuel line, the vehicle control system calculates the opening degree a of the metering valve, controls the shut-off valve to open, controls the metering valve to open according to the opening degree a, and controls the fuel injection assembly to inject fuel.

[0017] S04: When the vehicle control system determines that the fuel measurement sensor detects that the fuel temperature is lower than the set temperature t1, the vehicle control system controls the heating component to heat; or when the vehicle control system determines that the fuel outlet pipe is blocked, the vehicle control system controls the heating component to heat.

[0018] S05: When the temperature detected by the fuel measurement sensor is greater than the set temperature t2, and the difference between the fuel pressure detected by the downstream pressure sensor and the pressure value detected by the fuel measurement sensor is less than the set value ΔP2, the control system controls the heating component to stop heating.

[0019] S06: The vehicle control system calculates the opening degree 'a' of the metering valve, controls the shut-off valve to open, controls the metering valve to open according to the opening degree 'a', and controls the fuel injection assembly to inject fuel.

[0020] Furthermore, in step S03, the vehicle control system determines whether the oil outlet pipe is blocked by the following steps:

[0021] A. The vehicle control system opens the shut-off valve and opens the metering valve to a set level b;

[0022] B. The fuel measurement sensor and the downstream pressure sensor respectively detect and transmit the fuel pressure at the corresponding location;

[0023] C. The vehicle control system calculates the pressure difference between the two and compares it with the set pressure difference ΔP1;

[0024] D. When the vehicle control system determines that the pressure difference between the two pressures is greater than the set pressure difference value ΔP1, the vehicle control system determines that the fuel outlet pipe is blocked; otherwise, it is not blocked. This provides a double safety net compared to relying solely on fuel temperature to determine whether to activate the heating element, thus improving the reliability of the system's injection.

[0025] Furthermore, in step S04, the vehicle control system controls the heating assembly to heat up by including the following steps:

[0026] A. The vehicle control system controls the power supply module to turn on, and the electric heating harness begins to heat. At the same time, the vehicle control system controls the temperature sensor to detect the temperature of the heating water.

[0027] B. When the temperature of the heating water is not lower than the set temperature t3, the vehicle control system controls the solenoid valve to open and the heating component to start heating. When the temperature of the heating water is lower than the set temperature t3, the vehicle control system controls the engine to enter the warm-up mode.

[0028] C. After entering the warm-up mode, when the temperature of the heating water is no longer lower than the set temperature t3, the vehicle control system controls the solenoid valve to open, and the heating component begins to heat.

[0029] As can be seen from the above technical solutions, the present invention has the following advantages:

[0030] This solution provides an injection system and its operating method for the regeneration process of a particulate filter. Through the cooperation of the vehicle control system, heating components, and fuel measurement sensors, it can heat fuel according to fuel temperature, preventing low-temperature diesel fuel from waxing and thus ensuring the fuel injection components can inject normally, guaranteeing the regeneration process, ensuring the normal operation of the particulate filter, and preventing exhaust gas pollution. Heating the fuel metering component and fuel injection component via branch pipes one and two respectively improves the heating speed. Calculating the fuel pressure difference between the two locations allows the vehicle control system to determine if the fuel line is blocked by waxing, providing a double safety measure compared to relying solely on fuel temperature to determine whether to activate the heating components. The electric heating harness further improves the efficiency of fuel heating. The cooperation between the temperature sensor and the vehicle control system ensures the heating water temperature is maintained, guaranteeing effective and rapid heating. Attached Figure Description

[0031] To more clearly illustrate the technical solution of the present invention, the accompanying drawings used in the description will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0032] Figure 1 This is a schematic diagram of the hydraulic structure of the injection system used in the particle collector regeneration process according to a specific embodiment of the present invention.

[0033] Figure 2 This is a flowchart illustrating the operation of the injection system for the particle collector regeneration process in a specific embodiment of the present invention.

[0034] In the diagram, 1. Vehicle control system, 2. Engine, 3. Filter, 4. Shut-off valve, 5. Fuel measurement sensor, 6. Metering valve, 7. Downstream pressure sensor, 8. Check valve II, 9. Nozzle, 10. Branch pipe II, 11. Check valve I, 12. Branch pipe I, 13. Solenoid valve, 14. Temperature sensor, 15. Water pump, 16. Inlet pipe, 17. Outlet pipe, 18. Fuel supply pipe. Detailed Implementation

[0035] To make the objectives, features, and advantages of this invention more apparent and understandable, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings of the specific embodiments. Obviously, the embodiments described below are only some embodiments of this invention, and not all embodiments. Based on the embodiments of this patent, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this patent.

[0036] like Figure 1 As shown in the figure, this specific embodiment provides an injection system for the regeneration process of a particulate collector, including a filter 3, a fuel metering assembly, and a fuel injection assembly connected in sequence. The filter 3 is connected to the fuel line of the engine 2 via a fuel supply pipe 18. It also includes a heating assembly; the heating assembly includes a hot water pipe, and the inlet of the hot water pipe is equipped with a solenoid valve 13. The solenoid valve 13 is connected to the water pump 15 of the engine 2 and electrically connected to the vehicle control system 1. The heated water in the hot water pipe can flow back to the water tank of the engine 2 after passing through the fuel metering assembly and the fuel injection assembly. The hot water pipe includes a first branch pipe 12 and a second branch pipe 10. The first branch pipe 12 is connected to the water tank of the engine 2 after passing through the fuel metering assembly, and the second branch pipe 10 is connected to the water tank of the engine 2 after passing through the fuel injection assembly. Both the first branch pipe 12 and the second branch pipe 10 are equipped with a first check valve 11, which is open in the direction away from the water tank of the engine 2. The fuel metering assembly is equipped with a fuel measurement sensor 5, which can measure the fuel temperature and is electrically connected to the vehicle control system 1.

[0037] like Figure 1 The fuel metering component includes a housing, on which an inlet pipe 16 is provided. A shut-off valve 4 and a metering valve 6 are connected in sequence to the inlet pipe 16. Both the shut-off valve 4 and the metering valve 6 are electrically connected to the vehicle control system 1. The metering valve 6 is connected to an outlet pipe 17, which is located on the housing. A branch pipe 12 penetrates the housing and has a serpentine structure inside the housing.

[0038] like Figure 1 As shown, the fuel injection assembly includes a one-way valve 8 and a nozzle 9 connected in sequence. The one-way valve 8 is open to the nozzle 9 and is electrically connected to the vehicle control system 1. The one-way valve 8 is connected to the fuel outlet pipe 17. The nozzle 9 is provided with a heating chamber. The branch pipe 10 is connected to the water inlet pipe of the heating chamber and the water outlet pipe of the heating chamber is connected to the engine 2 water tank.

[0039] like Figure 1As shown, to improve the reliability of fuel injection in this system, the fuel measurement sensor 5 is a temperature and pressure sensor. The fuel measurement sensor 5 is located between the shut-off valve 4 and the metering valve 6. The fuel measurement sensor 5 can also detect fuel pressure. A downstream pressure sensor 7 is installed on the fuel outlet pipe 17, located near the fuel injection assembly. The downstream pressure sensor 7 can detect the fuel pressure in the fuel pipe 17. The downstream pressure sensor 7 is electrically connected to the control system. The vehicle control system 1 can determine the pressure difference between the two points. When the difference exceeds the set pressure difference, it can be determined that there is wax blockage in the fuel pipe. This, combined with the determination of whether heating is needed based on fuel temperature, forms a double safety net, greatly improving the reliability of the system in preventing diesel waxing, thereby further enhancing the reliability of fuel injection in this system.

[0040] like Figure 1 As shown, in order to further improve heating efficiency and to form a double guarantee with the use of water in engine 2 for heating, the heating component also includes an electrically connected power supply module and an electric heating harness. The electric heating harness is installed on the fuel supply pipe 18, fuel inlet pipe 16 and fuel outlet pipe 17. The power supply module is electrically connected to the vehicle control system 1. Compared with hot water, the use of electric heating harness can better exchange heat between the fuel supply pipe 18, fuel inlet pipe 16 and fuel outlet pipe 17, thereby further improving heating efficiency.

[0041] like Figure 1 As shown, in order to ensure that the heating water temperature provided by engine 2 meets the requirements for heating fuel and to heat effectively and quickly, the heating component also includes a temperature sensor 14. The temperature sensor 14 is located at the inlet of the hot water pipe and is used to detect the temperature of the heating water. The temperature sensor 14 is electrically connected to the vehicle control system 1. The vehicle control system 1 can control engine 2 to enter the warm-up mode. The warm-up mode can heat the water in the water tank through engine 2.

[0042] like Figure 2 As shown, the present invention also provides a method for operating a spray system for a particulate collector regeneration process, comprising the following steps:

[0043] S01: The vehicle control system determines whether it needs to enter the regeneration process;

[0044] S02: When the regeneration process is required, the fuel measurement sensor and the downstream pressure sensor detect the temperature and pressure of the fuel at the corresponding location and transmit the detection results to the vehicle control system.

[0045] S03: When the vehicle control system determines that the fuel measurement sensor detects that the fuel temperature is not lower than the set temperature t1 and the vehicle control system determines that there is no blockage in the fuel line, the vehicle control system controls the opening degree a of the metering valve, the vehicle control system controls the shut-off valve to open, controls the metering valve to open according to the opening degree a, and the vehicle control system controls the fuel injection assembly to inject.

[0046] S04: When the vehicle control system determines that the fuel measurement sensor detects that the fuel temperature is lower than the set temperature t1, the vehicle control system controls the heating component to heat the fuel. Or when the vehicle control system determines that the fuel line is blocked, the vehicle control system controls the heating component to heat the fuel.

[0047] S05: When the temperature detected by the fuel measurement sensor is greater than the set temperature t2, and the difference between the fuel pressure detected by the downstream pressure sensor and the pressure value detected by the fuel measurement sensor is less than the set value ΔP2, the control system controls the heating component to stop heating.

[0048] S06: The vehicle control system calculates the opening degree 'a' of the metering valve, controls the shut-off valve to open, controls the metering valve to open according to the opening degree 'a', and controls the fuel injection components to inject fuel.

[0049] In S01, the vehicle control system determines that regeneration is required based on the carbon particle calculation model.

[0050] To improve the reliability of heating and injection, in S03, the vehicle control system determines whether the oil line is blocked by the following steps:

[0051] A. The vehicle control system opens the shut-off valve and opens the metering valve to the set level; b.

[0052] B. The fuel measurement sensor and the downstream pressure sensor respectively detect and transmit the fuel pressure at the corresponding location;

[0053] C. The vehicle control system calculates the pressure difference between the two and compares it with the set pressure difference ΔP1;

[0054] D. When the vehicle control system determines that the pressure difference between the two is greater than the set pressure difference ΔP1, the vehicle control system determines that the oil pipe is blocked; otherwise, it is not blocked.

[0055] In order to ensure that the temperature of the heating water meets the heating requirements, in S04, the vehicle control system controls the heating components to perform heating, including the following steps:

[0056] A. The vehicle control system controls the power supply module to turn on, and the electric heating harness begins to heat. At the same time, the vehicle control system controls the temperature sensor to detect the temperature of the heating water.

[0057] B. When the temperature of the heating water is not lower than the set temperature t3, the vehicle control system controls the solenoid valve to open and the heating components to start heating. When the temperature of the heating water is lower than the set temperature t3, the vehicle control system controls the engine to enter the warm-up mode.

[0058] C. After entering the warm-up mode, when the temperature of the heating water is no longer lower than the set temperature t3, the vehicle control system controls the solenoid valve to open, and the heating components begin to heat.

[0059] The vehicle control system determines the degree of opening and closing of the metering valve based on parameters such as the diesel engine speed, load, exhaust flow rate, and the operating temperature of the vehicle aftertreatment system.

[0060] In this specific embodiment, t1 is set to 0°C, t2 is set to 50°C, t3 is set to 60°C, the opening / closing degree b is 10%, and ΔP1 is 2 bar.

[0061] In S04 and S06, when the vehicle control system controls the fuel injection unit to perform injection, an active injection test is performed first. If the active injection test is normal, then normal injection will proceed.

[0062] As can be seen from the above specific embodiments, the present invention has the following beneficial effects:

[0063] Through the cooperation of the vehicle control system, heating components and fuel measurement sensors, the fuel can be heated according to the fuel temperature to prevent the fuel from waxing due to low temperature, which would prevent the fuel injection components from injecting normally, ensuring the regeneration process can be carried out, ensuring the particulate filter can work normally, and preventing exhaust gas from polluting the environment.

[0064] Heating the fuel metering assembly and the fuel injection assembly by using branch pipe 12 and branch pipe 20 respectively can improve the heating speed.

[0065] By calculating the fuel pressure difference between two locations, the vehicle control system can determine whether the fuel line is blocked by wax buildup. This, combined with the fuel temperature-based determination of whether to activate the heating element, forms a double safety net, improving the reliability of the system's fuel injection.

[0066] The efficiency of heating fuel can be further improved by using an electric heating harness;

[0067] The temperature sensor 14 and the vehicle control system 1 work together to ensure the temperature of the heating water, thus ensuring effective and rapid heating.

[0068] The terms “upper,” “lower,” “outer,” “inner,” etc. (if present) in the specification, claims, and accompanying drawings of this invention are used to distinguish relative positional relationships and are not necessarily qualitative. It should be understood that such data can be interchanged where appropriate so that embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms “comprising” and “having,” and any variations thereof, are intended to cover non-exclusive inclusion.

[0069] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A method for operating a spray system in the regeneration process of a particle collector, characterized in that, The injection system for the particulate collector regeneration process includes a filter (3), a fuel metering assembly, and a fuel injection assembly connected in sequence. The filter (3) is connected to the engine's fuel line via a fuel supply pipe (18). The system also includes a heating assembly, which includes a hot water pipe. A solenoid valve (13) is installed at the inlet of the hot water pipe. The solenoid valve (13) is connected to the engine water pump and electrically connected to the vehicle control system. The heated water in the hot water pipe can flow back to the engine water tank after passing through the fuel metering assembly and the fuel injection assembly. A fuel measurement sensor (5) is installed inside the fuel metering assembly. A temperature and pressure sensor is used, and the fuel measurement sensor (5) is electrically connected to the vehicle control system. The fuel metering component includes a housing, on which an inlet pipe (16) is provided. A shut-off valve (4) and a metering valve (6) are connected in sequence on the inlet pipe (16). Both the shut-off valve (4) and the metering valve (6) are electrically connected to the vehicle control system. The metering valve (6) is connected to an outlet pipe (17), which is located on the housing. A downstream pressure sensor (7) is provided on the outlet pipe (17). The downstream pressure sensor (7) can detect the fuel pressure in the outlet pipe (17). The downstream pressure sensor (7) is electrically connected to the vehicle control system. The method includes the following steps: S01: The vehicle control system determines whether it needs to enter the regeneration process; S02: When the regeneration process is required, the fuel measurement sensor and the downstream pressure sensor detect the temperature and pressure of the fuel at the corresponding location and transmit the detection results to the vehicle control system. S03: When the vehicle control system determines that the fuel measurement sensor detects that the fuel temperature is not lower than the set temperature t1 and the vehicle control system determines that there is no blockage in the fuel line, the vehicle control system calculates the opening degree a of the metering valve, controls the shut-off valve to open, controls the metering valve to open according to the opening degree a, and controls the fuel injection assembly to inject fuel. S04: When the vehicle control system determines that the fuel measurement sensor detects that the fuel temperature is lower than the set temperature t1, the vehicle control system controls the heating component to heat the fuel. Or when the vehicle control system determines that the fuel line is blocked, the vehicle control system controls the heating component to heat the fuel. S05: When the temperature detected by the fuel measurement sensor is greater than the set temperature t2, and the difference between the fuel pressure detected by the downstream pressure sensor and the pressure value detected by the fuel measurement sensor is less than the set value ΔP2, the vehicle control system controls the heating component to stop heating. S06: The vehicle control system calculates the opening degree 'a' of the metering valve, controls the shut-off valve to open, controls the metering valve to open according to the opening degree 'a', and controls the fuel injection components to inject fuel.

2. The method of operation of the injection system for the regeneration process of a particle collector as described in claim 1, characterized in that, The hot water pipe includes branch pipe one (12) and branch pipe two (10). Branch pipe one (12) is connected to the engine water tank after passing through the fuel metering component. Branch pipe two (10) is connected to the engine water tank after passing through the fuel injection component. One-way valve one (11) is provided on both branch pipe one (12) and branch pipe two (10). One-way valve one (11) is open in the direction away from the engine water tank.

3. The method of operating the injection system for the particle collector regeneration process as described in claim 2, characterized in that, Branch pipe 1 (12) penetrates the shell, and inside the shell, branch pipe 1 (12) has a serpentine structure.

4. The method of operating the injection system for the particle collector regeneration process as described in claim 3, characterized in that, The fuel injection assembly includes a one-way valve (8) and a nozzle (9) connected in sequence. The one-way valve (8) is open to the nozzle (9). The one-way valve (8) is electrically connected to the vehicle control system. The one-way valve (8) is connected to the fuel outlet pipe (17). The nozzle (9) is equipped with a heating chamber. The branch pipe (10) is connected to the water inlet pipe of the heating chamber. The water outlet pipe of the heating chamber is connected to the engine water tank.

5. The method of operating the injection system for the particle collector regeneration process as described in claim 3, characterized in that, The fuel measurement sensor (5) is located between the shut-off valve (4) and the metering valve (6).

6. The method of operating the injection system for the particle collector regeneration process as described in claim 5, characterized in that, The heating assembly also includes an electrically connected power supply module and an electric heating harness. The electric heating harness is installed on the oil supply pipe (18), the oil inlet pipe (16), and the oil outlet pipe (17). The power supply module is electrically connected to the vehicle control system.

7. The method of operating the injection system for the particle collector regeneration process as described in claim 6, characterized in that, The heating assembly also includes a temperature sensor (14), which is located at the inlet of the hot water pipe. The temperature sensor (14) is used to detect the temperature of the heated water. The temperature sensor (14) is electrically connected to the vehicle control system, which can control the engine to enter the warm-up mode.

8. The method of operating the injection system for the regeneration process of a particle collector as described in claim 1, characterized in that, In S03, the vehicle control system determines whether the oil line is blocked by the following steps: A. The vehicle control system opens the shut-off valve and opens the metering valve to the set level; b. B. The fuel measurement sensor and the downstream pressure sensor respectively detect and transmit the fuel pressure at the corresponding location; C. The vehicle control system calculates the pressure difference between the two and compares it with the set pressure difference ΔP1; D. When the vehicle control system determines that the pressure difference between the two is greater than the set pressure difference ΔP1, the vehicle control system determines that the oil pipe is blocked; otherwise, it is not blocked.

9. The method of operating the injection system for the regeneration process of a particle collector as described in claim 7, characterized in that, In S04, the vehicle control system controls the heating components to heat up by including the following steps: A. The vehicle control system controls the power supply module to turn on, and the electric heating harness begins to heat. At the same time, the vehicle control system controls the temperature sensor to detect the temperature of the heating water. B. When the temperature of the heating water is not lower than the set temperature t3, the vehicle control system controls the solenoid valve to open and the heating components to start heating. When the temperature of the heating water is lower than the set temperature t3, the vehicle control system controls the engine to enter the warm-up mode. C. After entering the warm-up mode, when the temperature of the heating water is no longer lower than the set temperature t3, the vehicle control system controls the solenoid valve to open, and the heating components begin to heat.

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