Pulse rotary cleaning device for cleaning carbon deposition in air cylinder

Abstract

The invention discloses a pulse rotary cleaning device for cleaning carbon deposit in an air cylinder, and relates to the field of engine carbon deposit cleaning. The pulse rotary cleaning assembly comprises a flow guide pipe connected with the outlet end of the valve seat, the outlet end of the flow guide pipe is connected with an injection pipe through an injection pipe shell, the injection pipe is movably arranged in the injection pipe shell, the end, stretching out of the injection pipe shell, of the injection pipe is an injection pipe head, and one or more eccentric side injection openings are formed in the side face of the injection pipe head. According to the device, the eccentric side injection opening is formed in the injection pipe, so that the injection pipe can rotate under pushing of compressed air, meanwhile, the compressed air is rotationally sprayed out in a sector mode, sector areas sprayed out each time are partially intersected, secondary cleaning is conducted, and 360-degree surrounding type cleaning of the combustion chamber space is achieved; in addition, the eccentric compressed air flow passing through the eccentric jet orifice can generate vortex air flow, and residues in the combustion chamber are blown away in all directions.

Description

Technical Field

[0001] The present application relates to the field of engine carbon deposit cleaning, and in particular to a pulse rotation cleaning device for cleaning carbon deposits in a cylinder. Background Art

[0002] During the operation of the engine, the carbon deposits produced by the incomplete combustion of fuel are deposited on the cylinder, piston, valve and other parts, which will cause the engine to start difficultly, idle jitter, power reduction, noise increase, fuel consumption increase, and excessive exhaust emissions. Severe carbon deposits will cause engine failures, such as valve jamming leading to leakage and valve burning, and carbon deposits that fall and deposit between the piston and the cylinder wall will cause excessive wear of the cylinder wall and piston. Some models will also form a carbon deposit and oil sludge colloid mixture in the piston ring groove due to carbon deposits and the oil on the crankcase, causing piston ring jamming, poor sealing and burning oil, affecting the working efficiency and life of the engine and increasing exhaust emissions. Cleaning the carbon deposits and colloids in the combustion chamber and piston rings can restore the power output of the engine, improve the combustion efficiency of fuel, reduce fuel consumption, and reduce harmful exhaust emissions.

[0003] In the relevant technical field, there are four major types of carbon cleaning methods:

[0004] 1. Soaking method: Inject foam or liquid cleaning agent into the combustion chamber through the spark plug hole to soak and decompose carbon deposits and colloids. The disadvantage is that the soaking time is long. Due to the effects of physics and gravity, the foam will gradually disappear, and the cleaning liquid will flow to the crankcase through the piston gap, resulting in poor cleaning effect of carbon deposits on the top of the combustion chamber. It will also cause carbon deposits to be deposited in the engine piston ring groove, causing secondary pollution to the engine. At the same time, the residue after soaking is difficult to clean up, and it will also pollute the intake manifold and three-way catalytic converter for the second time when using compressed air to clean it. The residue entering the intake manifold will be sucked into the combustion chamber when the engine is started again and block the three-way catalytic converter, resulting in tertiary pollution of the combustion chamber and the three-way catalytic converter.

[0005] 2. Carbon deposit removal fuel additive: Its characteristic is that the additive is added to the fuel tank, and the cleaning agent and fuel are burned together during driving, and carbon deposits are eliminated during the combustion process. Its disadvantage is that the cleaning process is long. One bottle of additive is added to a tank of fuel, and it takes hundreds of kilometers to run a tank of fuel. Generally, manufacturers and service providers require 2-6 bottles to be added for one cleaning process, and 2-6 tanks of fuel are added to complete the cleaning, so the entire cleaning process requires driving hundreds to thousands of kilometers. And the residues left by the cleaning will clog the three-way catalytic converter, and the residues after combustion are discharged into the air, causing secondary pollution to the environment.

[0006] 3. Piston ring releaser: Adding piston ring releaser to the engine lubricating oil will take thousands of kilometers to take effect. The releaser changes the performance of the lubricating oil. Long-term high-load operation of the engine will cause certain wear and tear on the parts that rely on lubricating oil.

[0007] 4. Reciprocating suction cleaning machine (known in the market as pulse carbon removal cleaning machine or in-cylinder pulse cycle carbon removal cleaning machine): that is, the cleaning liquid is injected into the cylinder through the spark plug hole and repeatedly injected. The carbon deposits in the cylinder are extracted and dissolved into the cleaning fluid. Finally, the residual liquid is sucked out and blown clean with high-pressure air. The disadvantages are: ① The dissolved residue will be deposited in the gap between the cylinder wall and the piston and the gap between the piston ring; ② Some of the open valves will cause the residue to flow into the intake manifold and exhaust manifold during the suction process, polluting the intake cavity and the exhaust cavity, and further dissolving the carbon deposits in the intake cavity. It is difficult for compressed air to remove the residue in the intake cavity, which causes difficulty in starting for the first time. After starting, the residue in the intake manifold is sucked into the cylinder to cause secondary pollution, and pollutes and blocks the three-way catalytic converter through the exhaust chamber.

[0008] 5. Use walnut sand or dry ice to clean carbon deposits on the intake manifold: The intake manifold needs to be removed, and the carbon deposits on the intake manifold and the back of the valves need to be sprayed with a dry ice machine or walnut sand cleaning machine. The disassembly and assembly workload is large and the cleaning process takes a long time.

[0009] 6. Repair method: Dismantle the engine to remove carbon: It is necessary to dismantle most parts of the engine. The disadvantages are that it takes a long time, uses a lot of consumables, has a large workload, is expensive, and the disassembly process may change the original vehicle assembly requirements and affect the engine performance and life.

[0010] A Chinese patent with publication number CN112031916A discloses a carbon deposit cleaning device in an engine cylinder, which is driven by a pneumatic motor to rotate a cleaning pipe head, and is also provided with a drying device and a liquid suction device. The liquid suction bucket on the waste liquid collection pipe contacts the liquid using a filter plate to suck out the waste liquid after cleaning. Many additional devices need to be set up, and the cleaning cannot be performed during the movement of the engine. The assembly requirements are high and cannot meet the use requirements. Summary of the invention

[0011] In order to solve the above technical problems, the technical solution provided by the present invention is as follows: a pulse rotary cleaning device for cleaning carbon deposits in a cylinder, comprising a valve seat and a pulse rotary cleaning assembly, wherein the valve seat is used to combine or connect an electromagnetic valve group, the pulse rotary cleaning assembly is connected to an external liquid storage tank assembly through the valve seat, and the electromagnetic valve group controls the external liquid storage tank assembly to inject compressed air into the cylinder through the valve seat and the pulse rotary cleaning assembly; the pulse rotary cleaning assembly comprises a guide pipe connected to an outlet end of the valve seat, the outlet end of the guide pipe is connected to a jet pipe through a jet pipe housing, the jet pipe is movably arranged in the jet pipe housing, one end of the jet pipe extending out of the jet pipe housing is a jet pipe head, one or more eccentric side jet ports are arranged on the side of the jet pipe head, and a receiving surface is arranged on the inner bottom surface of the jet pipe head, when the compressed air entering the jet pipe impacts the receiving surface, the rebound effect of the receiving surface causes the entering compressed air to be ejected in a sideward and rearward direction, so that the eccentric side jet port forms an eccentric guide cavity, and then the jet pipe rotates relative to the water nozzle housing.

[0012] Preferably, the side injection port is a 1-shaped side injection port; the compressed air passing through the side injection port is ejected outward in the form of a fan-shaped surface, and at the same time, the fan-shaped surface formed by the next injection of the side injection port overlaps with a part of the previous fan-shaped surface.

[0013] Preferably, a fan-shaped groove wall is provided inwardly on a side of the side injection port away from the injection pipe head, so that the side injection port forms a side injection port with a fan-shaped cross section.

[0014] Preferably, the receiving surface is an arc-shaped end surface recessed toward the head of the injection pipe, and the receiving surface is a closed receiving surface.

[0015] Preferably, the receiving surface is a semi-closed receiving surface, and a 1-shaped bottom injection port is arranged at the center of the receiving surface.

[0016] Preferably, the end of the bottom injection port is located below the side injection port.

[0017] Preferably, a first abutment surface and a second abutment surface are provided at the connection between the injection tube shell and the injection tube. When the injection tube moves toward the valve seat, the first abutment surface limits the injection tube, and when the injection tube moves away from the valve seat, the second abutment surface limits the injection tube. At the same time, the outside of the injection tube contacts the second abutment surface through an elastomer, so that the injection tube can move up and down along the injection tube shell under the action of compressed air.

[0018] Preferably, the upper portion of the injection pipe housing is provided with a bidirectional thread locking nut, the inner side of the upper end of the bidirectional thread locking nut is provided with a bidirectional thread connected to the guide tube, and the lower end is provided with an external thread connected to the spark plug hole.

[0019] Preferably, the compressed air includes pure compressed air or a two-fluid mixed gas added with a cleaning agent or solid particles.

[0020] Preferably, the solenoid valve group includes a liquid adding solenoid valve, a main control solenoid valve and a high-pressure closed normally open one-way exhaust valve.

[0021] The advantages of the present invention compared with the prior art are:

[0022] (1) The device can be used for cleaning during the movement of the engine, and the residue is discharged from the engine intake cavity. The residue will not cause secondary pollution to the combustion chamber space and the three-way catalyst.

[0023] (2) By providing an arc receiving surface perpendicular to the flow guide direction, the force points of the compressed air when contacting the receiving surface can be more concentrated, so that the flow rates of the compressed air discharged through multiple injection ports are consistent.

[0024] (3) By setting an eccentric side injection port on the injection pipe, the injection pipe can be rotated under the impetus of compressed air, and the compressed air is rotated and ejected in the form of a fan, and the fan area of ​​each ejection partially intersects, so as to perform secondary cleaning, thereby achieving 180° surround cleaning of the combustion chamber space without leaving a blind spot for cleaning; in addition, the eccentric compressed air flow passing through the eccentric injection port can generate a vortex airflow, which blows away the residue in the combustion chamber in all directions.

[0025] (4) By providing a side injection port with a fan-shaped groove wall, the flow rate of the side injection port can be larger, the guiding effect is more reliable, and the top edge of the piston can be effectively covered.

[0026] (5) By adding a bottom injection port at the center of the receiving surface, the compressed air passing through the injection pipe can be directly sprayed in a fan shape toward the top of the piston, thereby increasing the cleaning effect.

[0027] (6) By arranging an elastic member between the injection pipe and the injection pipe housing, the injection pipe can be extended and retracted in the injection pipe housing during operation, so that the injection pipe can be extended into the cylinder to complete the rotation and the cleaning function in the rear direction and the top of the piston without causing the injection pipe to collide with the top of the piston.

[0028] (7) When the intake valve is open, compressed air directly flushes the back of the valve and the intake manifold cavity, eliminating the tedious and time-consuming disassembly and assembly of the intake manifold.

[0029] (8) The cleaning process of the device is carried out in a closed environment inside the equipment and is recovered through a vacuum cleaner, which will not cause leakage to pollute the external parts of the engine. The cleaning residues can be collected by the vacuum cleaner for harmless treatment, and no harmful substances generated during the cleaning process will be discharged to the ground and sewers. Due to the continuous reciprocating motion of the piston, the residues in the piston ring groove and on the cylinder wall are continuously pushed to the top of the cylinder wall, so that the residues can be thoroughly rinsed and discharged.

[0030] (9) Compared with fuel additives, the use of this application will not discharge carbon deposit decomposition products into the road and atmosphere during driving, and the cleaning time only takes a few minutes to tens of minutes;

[0031] Compared with the soaking method, which takes several hours to more than 12 hours to solve the oil burning phenomenon caused by piston ring sticking, the present application only needs to add piston ring dissolving agent when cleaning the carbon deposits in the cylinder, which improves the efficiency by dozens of times;

[0032] Compared with the method of adding piston ring slow-release agent to the engine lubricating oil to solve the oil burning problem caused by piston ring sticking, the present application has a short cleaning time and a small load, and hardly causes wear to engine parts during the cleaning process.

[0033] Compared with the reciprocating suction cleaning method, the present application always uses pure two-fluid compressed air for flushing, and collects it in real time through a vacuum cleaner. The residue concentration in the cylinder will not become higher and higher, and the dissolved carbon decomposition products will not be deposited between the cylinder wall and the piston and piston ring. After the cleaning is completed, the engine will be started successfully at one time, and the ignition will not be affected by the liquid and residue in the cylinder.

[0034] Compared with the traditional method of disassembling the engine to clean carbon deposits, the use of this application has a short cleaning time, low cost, simple operation, and will not change the original vehicle assembly requirements and affect the engine performance and life.

[0035] (10) One end of the pulse rotary cleaning component of the device is connected to the solenoid valve through a quick connector, and the other end is installed in the installation hole of the spark plug through a thread, so the installation process is convenient; by arranging a two-way thread on the injection pipe shell, when the pulse rotary cleaning component is taken out from the spark plug hole by left-hand rotation, it can be subjected to the reaction force of the two-way thread nut, so that the guide member and the injection nozzle shell are tightened and prevented from being separated from the injection nozzle shell. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 The invention is a schematic diagram of the installation state of a pulse rotary cleaning device for cleaning carbon deposits in a cylinder.

[0037] Figure 2 It is a front view of a pulse rotation cleaning device for cleaning carbon deposits in a cylinder according to the present invention;

[0038] Figure 3 It is a right view of a pulse rotation cleaning device for cleaning carbon deposits in a cylinder according to the present invention;

[0039] Figure 4 It is a schematic diagram of the internal structure of a pulse rotation cleaning device for cleaning carbon deposits in a cylinder according to the present invention;

[0040] Figure 5 It is a schematic diagram of the internal structure of a high-pressure closed normally open one-way exhaust valve in a pulse rotary cleaning device for cleaning carbon deposits in a cylinder according to the present invention;

[0041] Figure 6 A schematic cross-sectional view of a high-pressure closed normally open one-way exhaust valve in a pulse rotary cleaning device for cleaning carbon deposits in a cylinder according to the present invention Figure 1 ;

[0042] Figure 7 The cross-sectional view of a high-pressure closed normally open one-way exhaust valve in a pulse rotary cleaning device for cleaning carbon deposits in a cylinder according to the present invention. Figure 2 ;

[0043] Figure 8 It is a structural schematic diagram of a spray pipe in a pulse rotation cleaning device for cleaning carbon deposits in a cylinder according to the present invention;

[0044] Fig. 9 It is an enlarged structural schematic diagram of the end of the injection pipe in a pulse rotation cleaning device for cleaning carbon deposits in a cylinder according to the present invention;

[0045] Fig.10 It is a structural schematic diagram of the bottom of the injection pipe in a pulse rotation cleaning device for cleaning carbon deposits in a cylinder according to the present invention;

[0046] Fig.11 It is a schematic diagram of the structure inside the injection pipe of a pulse rotation cleaning device for cleaning carbon deposits in a cylinder according to the present invention;

[0047] Fig.12 The present invention is a schematic diagram of the internal structure of a spray pipe shell in a pulse rotary cleaning device for cleaning carbon deposits in a cylinder.

[0048] Fig.13 The present invention is a schematic diagram of a bidirectional thread locking nut in a pulse rotation cleaning device for cleaning carbon deposits in a cylinder.

[0049] Fig.14 The present invention is a schematic diagram of a 1-shaped side injection port in a pulse rotary cleaning device for cleaning carbon deposits in a cylinder.

[0050] Fig.15 It is an enlarged schematic diagram of a 1-shaped side injection port in a pulse rotary cleaning device for cleaning carbon deposits in a cylinder according to the present invention.

[0051] In the attached figure:

[0052] 1. Pulse rotary cleaning assembly; 2. Exhaust manifold; 2-1. Exhaust manifold chamber; 3. Intake manifold; 3-1. Intake manifold chamber; 4. Exhaust valve; 4-1. Back of exhaust valve; 5. Intake valve; 5-1. Back of intake valve; 6. Top of piston; 7. Top of combustion chamber; 8. Cylinder wall; 9. Combustion chamber; 10. Piston ring; 11. Piston; 12. Liquid filling solenoid valve; 13. Main control solenoid valve; 14. High-pressure closed normally open one-way exhaust valve; 14-1. Valve core seat; 14-2. Valve core blade; 14-3. Valve core; 14-4. Duckbill one-way valve; 14-5. Fixed sleeve; 14-6. Circlip; 14-7. Movable channel; 14-8. End sleeve; 14-9. Reset spring; 14-10. Valve core push rod; 15. Three-way connector; 16. Exhaust channel ; 17. External air source pipe; 18. External cleaning liquid pipe; 19. Negative pressure switch; 20. Vacuum tube; 21. Guide pipe; 21-1. Guide chamber; 21-2. First abutment surface; 22. Bidirectional threaded locking nut; 22-1; First direction thread; 22-2, second direction thread; 25. Injection pipe housing; 25-1; Second abutment surface; 25-2; Upper connecting chamber; 25-3; Lower connecting chamber; 25-3a; Injection pipe active chamber; 25-3b; Elastomer installation chamber; 26; Elastic member; 27; Injection pipe; 27-1; Side injection port; 27-2; Injection chamber; 27-3; Receiving surface; 27-4; Fan-shaped groove wall; 27-5; Bottom injection port; 27-6; Abutment ring; 28. Valve seat; 29. ​​Quick connector; 29-1; Quick connector male connector. DETAILED DESCRIPTION

[0053] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0054] In the description of the embodiments of the present invention, it should be noted that if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the drawings, or the orientation or position relationship in which the invented product is usually placed when used. It is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0055] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components must be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0056] In the description of the embodiments of the present invention, "plurality" means at least one.

[0057] In the description of the embodiments of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0058] Embodiment 1:

[0059] Combined with Figure 1 Generally, the cylinder has a combustion chamber 9 space, a spark plug mounting hole or a fuel injector mounting hole, an intake manifold chamber 3-1 and an exhaust manifold chamber 2-1; the cylinder has a piston 11 located in the combustion chamber 9 space, a piston ring 10, and an exhaust valve 4 and an intake valve 5 for controlling the opening and closing of the intake cavity and the exhaust cavity. The upper part of the exhaust valve 4 is the exhaust valve back 4-1, and the upper part of the intake valve 5 is the intake valve back 5-1. The throttle valve is connected to an external vacuum cleaner, specifically: remove the plastic tube at the throttle valve and connect the vacuum cleaner; the cylinder referred to in this embodiment is the cylinder inside the engine. When the engine is running normally, the piston 11 will move back and forth in the combustion chamber 9 space, inhale air through the intake cavity, and discharge the exhaust gas after combustion through the exhaust cavity.

[0060] Combined with Figure 1-4The pulse rotary cleaning device provided in this embodiment is installed in a spark plug mounting hole or a fuel injector mounting hole, and includes:

[0061] The valve seat 28 and the pulse rotary cleaning assembly 1, wherein one end of the pulse rotary cleaning assembly 1 is mounted on the spark plug hole of the engine, and the other end is connected to the valve seat 28 through a quick connector 29, a quick connector male connector 29-1 is provided on the flow guide tube 12, and a quick connector female connector is provided on the valve seat 28. The valve seat 28 is an existing structure, which is a detachable surface component in the valve, used to support the fully closed position of the valve core 14-3 and form a sealing pair, and technicians in this field can select the corresponding valve seat 28 according to the specific valve.

[0062] Combined with Figure 1-7 , wherein the valve seat 28 is used to combine or connect the solenoid valve group, the pulse rotary cleaning component 1 is connected to the external liquid storage tank component through the valve seat 28, and the solenoid valve group controls the external liquid storage tank component to inject compressed air into the cylinder through the valve seat 28 and the pulse rotary cleaning component 1; specifically, the solenoid valve group includes a liquid adding solenoid valve 12, a main control solenoid valve 13 and a high-pressure closed normally open one-way exhaust valve 14, and the liquid adding solenoid valve 12 is used to add liquid cleaning agent to the flowing compressed air; the main electronically controlled solenoid valve is used to inject compressed air or two-fluid mixed compressed air into the pulse rotary cleaning component 1 in different cylinder strokes, and the high-pressure closed normally open one-way exhaust valve 14 is closed when compressed air is injected into the combustion chamber 9, and its normal pressure state and the cylinder are open during the compression stroke, and the valve seat 28 combines or connects the above functions together;

[0063] Specifically, a three-way joint 15 connected to the guide pipe 12 is provided on one side of the valve seat 28, and an air outlet channel 16 connected to the guide pipe 12 is provided on the other side. The valve seat 28 is connected to the external air source pipe 17 and the external cleaning liquid pipe 18 through the three-way joint 15. The liquid adding solenoid valve 12 is provided on the external cleaning liquid pipe 18, and the high-pressure closed normally open one-way exhaust valve 14 is vertically provided on the air outlet channel 16;

[0064] The main control solenoid valve 13 is connected to the engine control system of the cylinder to be cleaned to obtain the ignition signal of the engine cylinder, that is, the ignition signal of the power stroke. The ignition signal obtained when the piston is at the top dead center starts the solenoid valve to inject compressed air into the cylinder to start the engine operation. At the same time, the main control solenoid valve 13 is also connected to the negative pressure switch 19, and the negative pressure switch 19 is connected to the guide tube 12 through the vacuum tube 20, so as to obtain the negative pressure signal generated when the piston in the cylinder to be cleaned moves downward. Specifically, when the engine intake and exhaust valves are both in the closed state, (Working stroke), negative pressure is generated when the piston moves downward, and the negative pressure switch 19 generates a negative pressure signal to start the main control solenoid valve 13 to inject compressed air into the cylinder. When the engine is in the intake stroke, the engine exhaust valve is closed and the intake valve is opened. At the same time, a vacuum cleaner is set at the intake valve, and the intake manifold always has negative pressure. When the intake valve opens, the negative pressure is transmitted to the cylinder, and a signal is generated through the negative pressure switch 19 connected to the guide chamber of the valve seat 28, and the liquid adding solenoid valve 12 is opened to inject compressed air and cleaning fluid into the cylinder;

[0065] Specifically, the high-pressure closed normally open one-way exhaust valve 14 comprises a valve core seat 14-1, one end of the valve core seat 14-1 close to the air outlet channel 16 is provided with a valve core 14-3 and a valve core blade 14-2 covering the inlet of the high-pressure closed normally open one-way exhaust valve 14, and the other end is in contact with the duckbill one-way valve 14-4 through the valve core push rod 14-10, and the duckbill one-way valve 14-4 is provided with a fixed sleeve 14-5 connected to the valve core seat 14-1, and the fixed sleeve 14-5 A corresponding retaining spring 14-6 is arranged at one end near the outlet of the duckbill one-way valve 14-4, and an active channel 14-7 for the valve core push rod 14-10 to extend into is arranged on the valve seat 28, and an end sleeve 14-8 for pushing the duckbill one-way valve 14-4 is arranged at one end of the valve core push rod 14-10 extending out of the active channel 14-7, and a return spring 14-9 is sleeved on the part of the valve core push rod 14-10 located from the active channel 14-7 to the valve core 14-3. In this embodiment, the high-pressure closed normally open one-way exhaust valve 14 is a multifunctional valve, which has the function of maintaining one-way exhaust when low-pressure air is generated in the cylinder, the function of closing the exhaust valve when high-pressure air is inhaled, and the one-way function of cutting off the exhaust valve intake when the piston moves downward to generate negative pressure, specifically: when the piston is in the compression stroke, the air is discharged to eliminate the reaction force of the compressed air on the piston; when air is injected into the cylinder, the exhaust valve is closed to avoid leakage; when the piston is in the suction stroke, the exhaust valve is cut off from the external air to maintain the negative pressure suction generated by the piston going downward.

[0066] In this embodiment, the compressed air includes pure compressed air or a two-fluid mixed gas with a cleaning agent or solid particles; the solid particles refer to particles with a cleaning function such as dry ice or walnut sand;

[0067] Combined with Figure 3-9Specifically, the pulse rotary cleaning assembly 1 includes a guide tube 12 connected to the outlet end of the valve seat 28, the outlet end of the guide tube 12 is connected to the injection tube 27 through the injection tube housing 25, the injection tube 27 is movably arranged in the injection tube housing 25, and one end of the injection tube 27 extending out of the injection tube housing 25 is the head of the injection tube 27, and one or more eccentric side injection ports 27-1 are arranged on the side of the head of the injection tube 27, and the eccentric angle depends on the required rotation speed and injection direction; the injection chamber 27-3 is arranged on the inner bottom surface of the head of the injection tube 27, in this embodiment, the injection chamber 27-3 is an arc-shaped end surface recessed toward the head of the injection tube 27, and the injection chamber 27-3 is a closed injection chamber 27-3; when the compressed air entering the injection tube 27 impacts the injection chamber 27-3, the rebound effect of the injection chamber 27-3 causes the entering compressed air to be ejected in the side and rear direction, so that its eccentric side injection port 27-1 forms an eccentric guide cavity, thereby causing the injection tube 27 to rotate relative to the injection tube housing 25;

[0068] At the same time, combined with Fig.12 The upper part of the injection tube housing 25 is provided with an upper connecting cavity 25-2 with the guide tube 12, and the lower part is provided with a lower connecting cavity 25-3 with the injection tube 27. The lower connecting cavity 25-3 is provided with an injection tube active cavity 25-3a and an elastic body installation cavity 25-3b in the direction away from the upper connecting cavity 25-2. The end of the injection tube 27 close to the guide tube 12 is provided with an abutment ring 27-6 adapted to the injection tube active cavity 25-3a. The end of the guide tube 12 in contact with the abutment ring 27-6 forms a first abutment surface 21-2. The inner diameter of the elastic body installation cavity 25-3b is smaller than the inner diameter of the injection tube active cavity 25-3a. A second abutting surface 25-1 is formed on the bottom surface of the elastomer mounting cavity 25-3b, and the elastomer 26 is installed between the elastomer mounting cavity 25-3b and the abutting ring 27-6. In this embodiment, the elastomer 26 is a spring. When the injection tube 27 moves toward the valve seat 28 to the first abutting surface 21-2, the first abutting surface 21-2 limits the movement of the injection tube 27. When the injection tube 27 moves away from the valve seat 28 under the action of compressed air, the second abutting surface 25-1 limits the injection tube 27. At the same time, under the action of the elastomer 26, the injection tube 27 can return to its initial position when it is not subject to force.

[0069] Combined with Figure 9-15In this embodiment, a fan-shaped groove wall 27-4 is provided inwardly on one side of the side jet port 27-1 away from the head of the jet pipe 27, so that the side jet port 27-1 forms a side jet port 27-1 with a fan-shaped cross section; in this embodiment, the jet chamber 27-3 is a semi-enclosed jet chamber 27-3, and a bottom jet port 27-5 in the shape of a letter "1" is provided in the center of the jet chamber 27-3; the end of the bottom jet port 27-5 is located below the side jet port 27-1; in other embodiments, the side jet port 27-1 may also be a side jet port 27-1 in the shape of a letter "1", and at the same time , the receiving surface 27-2 at the bottom of the injection chamber 27-3 can be set to be closed; the bottom injection port 27-5 at the center of the injection chamber 27-3 is added, so that fan-shaped injection can be directly performed to the piston top 6. When specifically set, the width of the bottom injection port 27-5 is preferably 1 mm to avoid its width being too large to weaken the reverse thrust of the injection chamber 27-3 on the opposite side and rear; on the other hand, in this embodiment, the side injection port 27-1 is set to be fan-shaped, and its cross-sectional width is larger, which can make the side nozzle flow larger, the guiding effect more reliable, and effectively cover the edge of the piston top 6;

[0070] The compressed air passing through the side injection port 27-1 is ejected outward in the form of a fan-shaped surface to complete the cleaning of a fan-shaped surface. At the same time, since the main electronically controlled solenoid valve can inject compressed air or two-fluid mixed compressed air into the pulse rotation cleaning component 1 in different cylinder strokes, the amount of compressed air injected can be controlled by the main electronically controlled solenoid valve to control the rotation angle of the injection pipe 27, and then through the specific setting of the main control solenoid valve 13, the fan-shaped surface formed by the next injection of the side injection port 27-1 overlaps with a part of the previous fan-shaped surface, so as to achieve the effect of cleaning the cylinder top without blind spots; in addition, according to experimental data, the injection pipe 27 is pushed into the cylinder 10-15 mm during injection, so that the injected compressed air can completely cover a fan-shaped area at the top. At the same time, in the specific setting, the pushing distance needs to be set to be less than the distance between the piston 11 and the top 7 of the combustion chamber, so as to avoid the collision between the head of the injection pipe 27 and the top 6 of the piston; when the side injection port 27-1 rotates to the valve position, the ejected compressed air flushes the carbon deposits on the back of the open valve and the intake manifold 3.

[0071] In addition, since the pulse rotary jet assembly is installed in the spark plug hole, the jet nozzle in the pulse rotary jet assembly replaces the jet tube housing 25 and the jet tube 27 due to the different installation dimensions of the spark plug hole, so the guide tube 12 is connected to the jet tube housing 25 with threads; in addition, the threads are in the spark plug installation cavity, and the connected threads are easy to fall off when the cleaning work is completed and removed, making it impossible to take out the jet tube housing 25, so the upper and lower ends of the jet tube housing 25 are set with two-way thread locking nuts 22, and the inner side of the upper end of the two-way thread locking nut 22 is provided with a first direction thread 22-1 connected to the guide tube 12, and the lower end is provided with a There is a second direction thread 22-2 connected to the spark plug hole; the first direction thread 22-1 and the second direction thread 22-2 have opposite thread rotation directions. The specific method of use is: first, screw the first direction thread 22-1 end of the injection tube housing 25 right-handed into the thread of the guide tube 12. After the injection tube housing 25 is connected to the guide tube 12, screw the injection tube housing 25 right-handed to the guide tube 12, and then rotate counterclockwise in the spark plug hole to take out the pulse rotary cleaning component 1. Under the reaction force of the two-way threaded nut, the guide part and the injection nozzle housing rotate in the tightening direction, and then they will be tightened more and more to prevent the guide part from detaching from the injection nozzle housing.

[0072] There are generally two ways to clean the cylinder: manual cleaning and automatic cycle cleaning. The working principle of automatic cycle cleaning is:

[0073] Corresponding to the four strokes of the engine itself, the automatic control device is used to set the function of automatically collecting the cylinder working signal, and the opening timing and delay time of the solenoid valve are set according to the signal obtained from the cylinder operation, so as to automatically control the injection timing and complete the cleaning work of all engine cylinders at the same time.

[0074] The following are the cleaning processes corresponding to the four trips:

[0075] During the intake stroke, the intake valve opens to inject compressed air; during the compression stroke, the intake and exhaust valves 4 are closed and the automatic exhaust valve opens; during the power stroke, the intake and exhaust valves 4 are closed to inject compressed air; during the exhaust stroke, the exhaust valve 4 opens to discharge exhaust gas.

[0076] The manual cleaning process is: by rotating the crankshaft, the intake valve or exhaust valve 4 is placed in an open state to facilitate the discharge of residues from the valve and the intake manifold 3 cavity; manually operating the external manual air source trigger to intermittently spray the mixed gas into the combustion chamber 9 in a point-by-point manner, which has a role similar to that of automatic cleaning, but can only clean one cylinder at a time.

[0077] The process of automatic cleaning is: the engine controller collects the top dead center signal of the piston 11 in the engine cylinder stroke, and starts the opening timing and delay time of the liquid filling solenoid valve 12 and the main control solenoid valve 13. It should be noted that before starting this embodiment, it is necessary to cut off the fuel pipeline and stop supplying fuel to the fuel injector. After all preparations are ready, it is necessary to use a key or a one-button starter to make the crankshaft move more than half a circle (about one second) to drive the piston 11 in the engine cylinder to make four strokes of reciprocating motion.

[0078] Specifically, the actions of this embodiment in the automatic cleaning state are:

[0079] (1) When the engine fuel injector is in the oil-free state, start the ignition switch; after the piston 11 starts the reciprocating motion, the engine controller receives the signal that the piston 11 has reached the top dead center and starts the cleaning process;

[0080] (2) Intake stroke: the engine controller receives a signal that the piston 11 has reached the top dead center; at this time, the intake valve is in an open state; the injection pipe 27 injects compressed air into the combustion chamber 9 and discharges it through the intake valve. After the piston 11 reaches the bottom dead center, the injection stops.

[0081] (3) Compression stroke: After the intake stroke is completed, the intake valve is closed; the piston 11 moves upward to compress the remaining gas upward; the gas is discharged through the cavity of the injection pipe 27 and the cavity of the guide pipe 12 from the automatic exhaust valve connected to the cavity to eliminate the resistance of the piston 11 when it moves upward.

[0082] (4) Power stroke: After the compression stroke, the piston 11 is at the top dead center, and the intake and exhaust valves 4 are both in the closed state; the control signal receives the power signal, and the injection pipe 27 injects compressed air into the combustion chamber 9; the piston 11 is pushed downward to perform work, so that the engine runs; before the piston 11 reaches the bottom dead center, the injection stops.

[0083] (5) Exhaust stroke: After the power stroke, the exhaust valve 4 opens; the piston 11 moves upward to compress the remaining gas; and the gas is discharged through the exhaust manifold chamber 2-1.

[0084] During cleaning, the present embodiment uses a key or a one-button starter to allow the crankshaft to move for more than half a turn (about one second). After the solenoid valve starts working, the start key or the one-button starter button can be released. The present application will keep the engine running under the impetus of compressed air. The cleaning process specifically includes the following steps:

[0085] S1, the piston 11 of a cylinder enters the top dead center of the piston 11 in the power stroke. After the engine controller receives the top dead center signal, the main solenoid valve opens to inject compressed air into the cylinder. At this time, the valve core 14-3 and the elastic body of the high-pressure closed normally open one-way exhaust valve 14 are subjected to the pressure of the compressed air, and the valve core 14-3 is closed, and at the same time, the piston 11 is pushed downward to do work. At the same time, the crankshaft and the pistons 11 of other cylinders enter the motion state and perform their respective working strokes. When the piston 11 of this cylinder moves downward to the bottom dead center under the action of compressed air, the solenoid valve closes the air intake and ends the compression stroke. At the same time, the high-pressure closed normally open one-way exhaust valve 14 loses pressure and returns to the normally open position;

[0086] S2, when the cylinder ends the compression stroke and enters the exhaust stroke, the engine's own exhaust valve opens, and the piston 11 moves upward to discharge the remaining gas in the cylinder into the exhaust manifold 2 chamber;

[0087] S3. When the exhaust stroke of this cylinder ends, the exhaust valve 4 is closed, the piston 11 moves upward to the top dead center of the intake stroke, and the intake valve opens. At this time, the engine controller sends a cleaning signal, and the main control solenoid valve 13 and the liquid filling solenoid valve 12 are opened at the same time. The cleaning liquid (or dry ice) and compressed air are mixed into a two-fluid compressed gas and injected into the cylinder. When the compressed air enters the injection pipe 27, the injection pipe 27 is pressed to overcome the pressure of the elastic body and pushes into the cylinder to the first abutment surface 21-2. Due to the eccentric reaction force of the side injection port 27-1, the injection pipe 27 is pushed to rotate in the opposite direction by a certain angle; under the action of the arc-shaped receiving surface 27-2 at the head of the injection pipe 27, the compressed air is sprayed in a fan shape toward the top 7 of the combustion chamber at the side and rear. At the same time, the two fluids or compressed air are sprayed in a fan shape toward the top 7 of the combustion chamber through the eccentric diffusion cavity of the injection pipe 27, and the carbon deposits are flushed and rebounded to the cylinder wall 8 and piston 1 in the combustion chamber 9. 1 bottom, the cylinder wall 8 and the piston top 6 are flushed, and the pressure penetrates into the gap between the piston 11 and the cylinder wall. The cleaning agent soaks and dissolves the carbon deposits in the piston ring 10 and the piston ring 10 groove. The dissolved sediment residue is pushed to the cylinder top and the crankcase by the piston ring 10 when the piston 11 moves up and down. The vortex airflow generated by the two fluids injected during the intake stroke flushes the cleaned carbon deposits through the opened intake valve of the combustion chamber 9 into the intake manifold chamber 3-1 and is collected by the dust collector. Before the piston 11 of this cylinder moves downward to the bottom dead center, the main control solenoid valve 13 and the liquid addition solenoid valve 12 are closed at the same time, and the injection of the two fluid compressed air into the combustion chamber 9 is stopped. Then, after the high-pressure closed normally open one-way exhaust valve 14 loses the high-pressure pressure, the valve core 14-3 is opened by the elastic body, and the combustion chamber 9 is open to the outside. The intake valve of the combustion chamber 9 itself is also closed, ending the intake stroke and entering the compression stroke.

[0088] S4, when the cylinder enters the compression stroke, the piston 11 moves upward, and the residual gas in the cylinder is compressed upward by the piston 11, and is discharged to the outside of the combustion chamber 9 through the opened high-pressure closed normally open one-way exhaust valve 14;

[0089] S5. All cylinders of the engine are cleaned in a continuous cycle according to the above four processes to complete the cleaning requirements of the combustion chamber 9 designed in this application; if a cleaning fluid with a piston ring 10 release agent component is selected, the oil burning phenomenon caused by the piston ring 10 being stuck due to carbon deposits can be completely eliminated;

[0090] Specifically, for step S3, it should be noted that:

[0091] (1) A flow guide chamber 21-1 connected to the valve seat 28 is formed in the flow guide tube 12, and an injection chamber 27-3 connected to the flow guide chamber 21-1 and the side injection port 27-1 is formed in the injection tube 27. The compressed air can pass through the flow guide chamber 21-1 and the injection chamber 27-3 in sequence and be ejected outward from the side injection port 27-1. When the compressed air enters the injection chamber 27-3, it first contacts the injection chamber 27-3 and is blocked by the injection chamber 27-3. The compressed air is ejected outward from the side injection port 27-1 on the injection tube 27. The injection chamber 27-3 is perpendicular to the flow guide direction. The force point of the compressed air when contacting the injection chamber 27-3 is more concentrated, so that the flow rate of the compressed air discharged through the multiple side injection ports 27-1 is consistent.

[0092] (2) An elastic member 26 is provided between the injection tube housing 25 and the injection tube 27. After the compressed air enters the guide chamber, the injection tube 27 is pushed to move in the direction of the injection tube 27 chamber. When the compressed air stops being ejected outward, the injection tube 27 is returned to the first abutting surface 21-2 by the return thrust of the elastic body. After the compressed air enters the injection chamber 27-3 from the guide chamber 21-1, it is blocked by the arc-shaped receiving surface 27-2, and a force is applied to the injection chamber 27-3 to move in the flow guiding direction, thereby causing the elastic member 26 between the injection tube 27 and the guide to deform, and the injection tube 27 moves in the flow guiding direction. When the compressed air stops being discharged, the injection chamber 27-3 is not subjected to the force in the flow guiding direction, and the elastic member 26 returns to its initial state. Such a setting can prevent the piston 11 from colliding with the injection tube 27 when moving upward.

[0093] (3) When the side injection port 27-1 injects and stops injecting, at least half of the injection port is arranged in the space of the combustion chamber 9, so as to facilitate the discharge of residual gas during the compression stroke.

[0094] (4) When the side injection port 27-1 sprays compressed air outward, the guide slope causes the injection pipe 27 to rotate at a preset angle. The preset angle is determined by the pressure and flow rate of the compressed air when it enters the injection chamber 27-3. The preferred preset angle is 15-30 degrees. After the injection pipe 27 rotates at the preset angle, the fan-shaped area of ​​the compressed air sprayed outward by the injection pipe 27 intersects with the fan-shaped area of ​​the compressed air sprayed outward by the injection pipe 27 before the injection pipe 27 rotates at the preset angle. When cleaning the inside of the cylinder, the compressed air sprayed out after the rotation is The fan-shaped area of ​​the compressed air will overlap with the partial fan-shaped area of ​​the compressed air ejected before rotation for secondary cleaning, ensuring its cleanliness after cleaning. The carbon deposit residues cleaned in the combustion chamber 9 space are discharged through the intake valve with the vortex airflow, and also have a cleaning effect on the back of the intake valve and the intake manifold 3; when the side injection port 27-1 rotates to the valve position, the compressed air strongly flushes the front and back surfaces of the opened valve and the intake duct chamber, and the outside of the intake duct is connected to a vacuum cleaner to suck out the carbon deposit residues after cleaning.

[0095] (5) When using the manual mode of the present application for cleaning, the intake valve or exhaust valve 4 must always be in an open state, and the above process is repeated continuously by manual point-and-shooting to achieve an effect similar to automatic continuous cleaning.

[0096] The present invention and its embodiments are described above, and such description is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if ordinary technicians in the field are inspired by it, without departing from the purpose of the invention, they can design a structure and embodiment similar to the technical solution without creativity, which should belong to the protection scope of the present invention.

Claims

1. A pulse rotary cleaning device for cleaning carbon deposits in a cylinder, characterized in that: It includes a valve seat and a pulse rotary cleaning component, the valve seat is used to combine or connect the electromagnetic valve group, the pulse rotary cleaning component is connected to the external liquid storage tank component through the valve seat, the electromagnetic valve group controls the external liquid storage tank component to inject compressed air into the cylinder through the valve seat and the pulse rotary cleaning component; the pulse rotary cleaning component includes a guide tube connected to the outlet end of the valve seat, the outlet end of the guide tube is connected to the injection pipe through the injection pipe shell, the injection pipe is movably arranged in the injection pipe shell, the end of the injection pipe extending out of the injection pipe shell is the injection pipe head, the side of the injection pipe head is provided with one or more eccentric side injection ports, the inner bottom surface of the injection pipe head is provided with a receiving surface, when the compressed air entering the injection pipe impacts the receiving surface, the rebound effect of the receiving surface causes the entering compressed air to be ejected in the side and rear direction, so that the eccentric side injection port forms an eccentric guide cavity, and then the injection pipe is rotated relative to the water nozzle shell.

2. A pulse rotation cleaning device for cleaning carbon deposits in a cylinder according to claim 1, characterized in that: The side injection port is a 1-shaped side injection port; the compressed air passing through the side injection port is ejected outward in the form of a fan-shaped surface, and at the same time, the fan-shaped surface formed by the next injection of the side injection port overlaps a part of the previous fan-shaped surface.

3. The pulse rotation cleaning device for cleaning carbon deposits in a cylinder according to claim 1, characterized in that: A fan-shaped groove wall is arranged inwardly on one side of the side injection port away from the injection pipe head, so that the side injection port forms a side injection port with a fan-shaped cross section.

4. A pulse rotation cleaning device for cleaning carbon deposits in a cylinder according to claim 2, characterized in that: The receiving surface is an arc-shaped end surface recessed toward the head of the injection pipe, and the receiving surface is a closed receiving surface.

5. The pulse rotation cleaning device for cleaning carbon deposits in a cylinder according to claim 3, characterized in that: The receiving surface is a semi-closed receiving surface, and a 1-shaped bottom injection port is arranged at the center of the receiving surface.

6. A pulse rotation cleaning device for cleaning carbon deposits in a cylinder according to claim 5, characterized in that: The end of the bottom injection port is located below the side injection port.

7. The pulse rotation cleaning device for cleaning carbon deposits in a cylinder according to claim 1, characterized in that: The upper part of the injection pipe shell is provided with an upper connecting cavity with the guide pipe, and the lower part is provided with a lower connecting cavity with the injection pipe. The lower connecting cavity is provided with an injection pipe active cavity and an elastomer installation cavity in sequence in the direction away from the upper connecting cavity. An abutment ring adapted to the injection pipe active cavity is provided outwardly at one end of the injection pipe close to the guide pipe, and a first abutment surface is formed at one end of the guide pipe in contact with the abutment ring. The inner diameter of the elastomer installation cavity is smaller than the inner diameter of the injection pipe active cavity, so that a second abutment surface is formed on the bottom surface of the elastomer installation cavity, and the elastomer is installed between the elastomer installation cavity and the abutment ring.

8. The pulse rotation cleaning device for cleaning carbon deposits in a cylinder according to claim 1, characterized in that: The upper part of the injection pipe shell is provided with a two-way thread locking nut, the inner side of the upper end of the two-way thread locking nut is provided with a two-way thread connected with the guide pipe, and the lower end is provided with an external thread connected with the spark plug hole.

9. The pulse rotation cleaning device for cleaning carbon deposits in a cylinder according to claim 1, characterized in that: The compressed air includes pure compressed air or a two-fluid mixed gas added with a cleaning agent or solid particles.

10. The pulse rotation cleaning device for cleaning carbon deposits in a cylinder according to claim 1, characterized in that: The solenoid valve group includes a liquid adding solenoid valve, a main control solenoid valve and a high-pressure closed normally open one-way exhaust valve. The main control solenoid valve is connected to the engine control system of the cylinder to be cleaned to obtain the ignition signal of the engine cylinder; the main control solenoid valve is also connected to a negative pressure switch, which is connected to the guide pipe through a vacuum tube, so as to obtain the negative pressure signal generated when the piston in the cylinder to be cleaned moves downward; A three-way joint connected to the guide pipe is arranged on one side of the valve seat, and an air outlet channel connected to the guide pipe is arranged on the other side. The valve seat is connected to an external air source pipe and an external cleaning liquid pipe through the three-way joint. The liquid adding solenoid valve is arranged on the external cleaning liquid pipe, and the high-pressure closed normally open one-way exhaust valve is vertically arranged on the air outlet channel. The high-pressure closed normally open one-way exhaust valve comprises a valve core seat, wherein one end of the valve core seat close to the outlet channel is provided with a valve core blade covering the inlet of the high-pressure closed normally open one-way exhaust valve, and the other end is in contact with the duckbill one-way valve through a valve core push rod, and a fixing sleeve connected to the valve core seat is provided outside the duckbill one-way valve, and a retaining spring corresponding to the fixing sleeve is provided at one end close to the outlet of the duckbill one-way valve, and an active channel for the valve core push rod to extend into is provided on the valve seat, and an end sleeve for pushing the duckbill one-way valve is provided at the end of the valve core push rod extending out of the active channel, and a reset spring is sleeved on the part of the valve core push rod located from the active channel to the valve core.

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