Multi-row cylinder diesel engine exhaust stopping system based on hydraulic control pull rod stretching

Abstract

The utility model provides a multi-row cylinder diesel engine exhaust stopping system based on hydraulic control pull rod stretching, and belongs to the technical field of diesel engine control. Specifically, a rocker arm shaft is rotationally sleeved with a three-jaw rocker arm, one jaw of the three-jaw rocker arm is connected with a speed regulator through a pull rod structure, a second jaw of the three-jaw rocker arm is hinged to one end of a hydraulic telescopic A-row pull rod, and the other end of the hydraulic telescopic A-row pull rod is connected with a plurality of A-row fuel injection pumps through an A-row elastic reset control rod mechanism; a third claw of the three-claw rocker arm is hinged to one end of a B-row pull rod, and the other end of the B-row pull rod is connected with a plurality of B-row fuel injection pumps through a B-row elastic reset control rod mechanism. Communicated oil holes are formed in the rocker arm shaft, the three-jaw rocker arm and the hydraulic telescopic A-row pull rod, and the electromagnetic valve is communicated with the oil holes through oil ways and is further communicated with lubricating oil with certain pressure in a lubricating oil system of the diesel engine through the oil ways. The utility model relates to a system for controlling switching between a non-pressure state and a pressurized state based on a fluid hydraulic piston rod, and single-row ignition starting of a diesel engine is realized.

Description

Technical Field

[0001] The utility model belongs to the technical field of diesel engine control, and in particular relates to a multi-row cylinder diesel engine stop system based on hydraulic control of pull rod extension. Background Art

[0002] Common multi-row marine diesel engines are V-type engines. When the diesel engine is started, the governor boost servo will prompt the governor to pull the fuel injection pump rack to a certain number of rack grids (usually the fuel injection amount is greater than the idle fuel injection amount, which is easy to start). When the diesel engine is running, the high-pressure fuel pump works in sequence and injects fuel into the cylinder through the injector. When the diesel engine speed increases to the ignition speed, the air temperature in the cylinder reaches the ignition point of the fuel after the cylinder is compressed, the fuel is ignited, the cylinder ignites, and the diesel engine completes the start and starts running.

[0003] When the diesel engine is running, the load of each cylinder is basically the same (uniformity requirement for each cylinder). Due to structural limitations, such as Figure 10-11 As shown, the current control structure is that the governor controls the injection amount of the A column injection pump 6' and the B column injection pump 16' through the rocker arm shaft 1' and the rigid A column pull rod 7' and B column pull rod 12' on both sides. When the diesel engine increases or decreases load, the two rows of cylinders are synchronized, and the load percentage of each cylinder is the same as the load percentage value of the diesel engine.

[0004] When the diesel engine is running at low load, incomplete combustion in the cylinder will easily cause carbon deposits. Therefore, the diesel engine is usually not allowed to run in the low load area for a long time. In daily operation, after running at low load for a period of time, the diesel engine needs to run at high load to purge the carbon deposits in the cylinder. If the diesel engine is often running at low load, it is necessary to shorten the diesel engine maintenance cycle and clean and maintain the parts in the cylinder.

[0005] Therefore, the defects of the existing operation control are as follows: when the diesel engine starts, after reaching the ignition speed, the temperature of the air in the cylinder reaches the ignition point of the fuel after compression, and the fuel burns and ignites. Before reaching the ignition speed, part of the fuel injected into the cylinder is adsorbed on the inner surface of the combustion chamber, and part is discharged into the exhaust pipe with the scavenging air. After ignition, the fuel adsorbed in the combustion chamber will easily produce carbon deposits; the fuel discharged into the exhaust pipe is prone to afterburning, accelerating the formation of carbon deposits in the exhaust system; in addition, these fuels are not effectively utilized, resulting in economic waste;

[0006] When the diesel engine is running at low load, the efficiency of the supercharger is relatively low, the boost air pressure is low, the air-fuel ratio in the cylinder is low, the combustion in the cylinder is not complete, and a large amount of carbon deposits will be generated. Therefore, the diesel engine is usually not allowed to run for a long time in the low load area. At the same time, in the existing daily operation, the maintenance cycle of the diesel engine is shortened, and the parts in the cylinder are cleaned and maintained, which increases the maintenance cost. Therefore, it is necessary to propose improvements. Utility Model Content

[0007] The technical problem solved by the utility model is as follows: a multi-row cylinder diesel engine stop system based on the extension and retraction of a hydraulic control rod is provided. The utility model is a system based on the control switching of a fluid hydraulic piston rod between a pressure-free state and a pressure-increasing state, so as to realize single-row ignition and starting of the diesel engine. The diesel engine stop is realized by designing the control rod of the fuel injection pump of the row of cylinders that need to be stopped to have a hydraulic piston and a hydraulic rod with a variable length. On the one hand, the single-row ignition and starting can reduce the fuel loss during the starting process and improve the fuel economy of the diesel engine. On the other hand, by stopping the exhaust, the low-load operation capability of the diesel engine can be improved, the rate of carbon deposit generation can be reduced, the maintenance time can be extended, and the maintainability of the diesel engine can be improved.

[0008] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0009] A multi-row cylinder diesel engine stop system based on hydraulically controlled tie rod extension, comprising a rocker shaft, multiple injection pumps for row A, tie rods for row B, multiple injection pumps for row B, and also a hydraulically retractable tie rod for row A and a solenoid valve;

[0010] A three-claw rocker arm is rotatably sleeved on the rocker arm shaft, one claw of the three-claw rocker arm is connected to the speed regulator through a pull rod structure, the second claw of the three-claw rocker arm is hinged to one end of the hydraulically retractable A-row pull rod, and the other end of the hydraulically retractable A-row pull rod is connected to multiple injection pumps in the A-row through an A-row elastic reset control rod mechanism; the third claw of the three-claw rocker arm is hinged to one end of the B-row pull rod, and the other end of the B-row pull rod is connected to multiple injection pumps in the B-row through an B-row elastic reset control rod mechanism;

[0011] The rocker shaft, the three-claw rocker arm and the hydraulically retractable A-row tie rod are provided with interconnected oil holes, and the solenoid valve is connected with the oil hole of the rocker shaft through an oil circuit.

[0012] The hydraulically retractable A-column tie rod comprises an A-column tie rod and an A-column hydraulic cylinder, one end of the A-column tie rod is fixedly connected to the piston of the A-column hydraulic cylinder; a tie rod oil hole is provided inside the A-column tie rod, and the tie rod oil hole is connected to the oil chamber inside the A-column hydraulic cylinder through the oil hole in the piston;

[0013] A rocker shaft central oil hole and a rocker shaft radial oil hole are provided inside the rocker shaft, and a rocker oil hole is provided inside the second claw of the three-claw rocker arm connected to the A-row tie rod; a rocker bushing is provided between the three-claw rocker arm and the rocker shaft, and the rocker bushing is interference-fitted in the inner hole of the three-claw rocker arm and has a clearance fit with the rocker shaft; an annular oil groove and a bushing radial oil hole connected to the annular oil groove are provided in the inner hole of the rocker bushing, and when the rocker bushing is installed in the three-claw rocker arm, the bushing radial oil hole is connected to the rocker oil hole; when the three-claw rocker arm is sleeved on the rocker shaft, the annular oil groove on the rocker bushing is just connected to the rocker shaft radial oil hole on the rocker shaft, ensuring that when the three-claw rocker arm and the rocker shaft rotate relative to each other, the pressure lubricating oil of the rocker shaft can be transported to the oil channel of the three-claw rocker arm;

[0014] The other end of the A column tie rod is hinged to the second claw of the three-claw rocker arm; the A column tie rod end is connected to the A column tie rod hinge joint, and the A column tie rod hinge joint is hinged to the second claw of the three-claw rocker arm through the A column pin shaft, and the A column pin shaft is provided with a connected pin shaft center and radial oil hole and a pin shaft annular oil groove, one end of the A column pin shaft is interference-mounted on the second claw of the three-claw rocker arm, and the A column pin shaft is directly connected to the oil hole of the matching part of the three-claw rocker arm, and the other end of the A column pin shaft is matched with the A column tie rod hinge joint through a joint bushing. The joint bushing is interference fitted in the inner hole of the A-column tie rod hinge joint and has a clearance fit with the A-column pin, and can rotate around the A-column pin; the end of the A-column pin that cooperates with the A-column tie rod hinge joint is provided with a pin annular oil groove, and the pin annular oil groove is connected with the pin center and a radial oil hole in the radial oil hole; during operation, the pin annular oil groove is filled with lubricating oil, and during the rotation of the A-column tie rod hinge joint, the lubricating oil can always pass through the oil hole of the A-column pin, the oil hole on the joint bushing and the A-column tie rod hinge joint into the tie rod oil hole in the center of the A-column tie rod.

[0015] Further, the A-row elastic reset control lever mechanism comprises an A-row high-pressure oil pump control lever, an A-row two-claw rocker arm and an A-row reset spring, the A-row high-pressure oil pump control lever is connected to the rack pull rod of multiple injection pumps in the A-row, the A-row two-claw rocker arm is fixedly sleeved on the A-row high-pressure oil pump control lever, one claw of the A-row two-claw rocker arm is hinged to the rear end of the A-row hydraulic cylinder, the other claw of the A-row two-claw rocker arm is hinged to one end of the A-row reset spring, and the other end of the A-row reset spring is fixedly connected to the diesel engine body;

[0016] The B-row elastic reset control lever mechanism includes a B-row high-pressure oil pump control lever, a B-row two-claw rocker arm and a B-row reset spring. The B-row high-pressure oil pump control lever is connected to the rack pull rod of multiple fuel injection pumps in the B-row. A B-row two-claw rocker arm is fixedly sleeved on the B-row high-pressure oil pump control lever. One claw of the B-row two-claw rocker arm is hinged to one end of the B-row pull rod, and the other claw of the B-row two-claw rocker arm is hinged to one end of the B-row reset spring. The other end of the B-row reset spring is fixedly connected to the diesel engine body.

[0017] Furthermore, the pull rod structure includes a pull rod and a speed regulator output rocker arm, one claw of the three-claw rocker arm is hinged to one end of the pull rod, the other end of the pull rod is hinged to the speed regulator output rocker arm, and the speed regulator output rocker arm is connected to the throttle of the speed regulator.

[0018] Furthermore, the solenoid valve is a two-position three-way solenoid valve.

[0019] The advantages of this utility model compared with the prior art:

[0020] 1. This solution realizes diesel engine shutdown by designing the control pull rod of the injection pump of a row of cylinders that need to stop working as a hydraulic rod with a hydraulic piston and variable length; by stopping the diesel engine, the load of the diesel engine is borne by a row of cylinders. Although the load of the diesel engine is reduced, the operating cylinders are still operating under higher load conditions, so that the low-load operation area of ​​the diesel engine is relatively reduced and the long-term operation area of ​​the diesel engine is expanded;

[0021] 2. When starting, this solution saves fuel by stopping exhaust; when the cylinder is running at a higher load, the fuel consumption rate is relatively low, thus improving the economy of the diesel engine;

[0022] 3. This solution expands the low-load operation area by stopping the exhaust, reduces the time when the diesel engine cylinder runs at low load, reduces the rate of carbon deposit generation, prolongs the carbon deposit cleaning and maintenance time, and improves the maintainability of the diesel engine;

[0023] 4. This solution facilitates the automatic and intelligent control of high-power diesel engines by improving the diesel engine stop system. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0025] Figure 2 For this utility model Figure 1 Schematic diagram of the structure in F direction;

[0026] Figure 3 For this utility model Figure 2 Middle AA section view;

[0027] Figure 4 This is a schematic diagram of the utility model when the drainage system is stopped and the oil is drained;

[0028] Figure 5 For this utility model Figure 4 Schematic diagram of the structure in the F′ direction;

[0029] Figure 6 For this utility model Figure 5 A′-A′ sectional view;

[0030] Figure 7 This is a schematic diagram of the utility model when the oil is stopped and discharged from the system;

[0031] Figure 8 For this utility model Figure 7 Middle F" structural diagram;

[0032] Fig. 9 For this utility model Figure 8 A"-A" sectional view;

[0033] Fig.10It is a structural schematic diagram of the prior art of the utility model;

[0034] Fig.11 For this utility model Fig.10 Schematic diagram of the E-direction structure;

[0035] Fig.12 For the utility model Figure 3 BB cross-sectional view. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0037] It should be noted that, in this article, the terms "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions. The elements defined by the sentence "comprises a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0038] See also Figure 1-12 , describe the embodiments of the present utility model in detail.

[0039] Embodiment: A multi-row cylinder diesel engine stop system based on hydraulic control of pull rod extension, see Figure 1-3 As shown, it includes a rocker shaft 1, multiple fuel injection pumps 6 in row A, a tie rod 12 in row B, multiple fuel injection pumps 16 in row B, and also includes a hydraulically retractable tie rod 7 in row A and a solenoid valve 11;

[0040] The rocker arm shaft 1 is fixed on the machine body, and a three-claw rocker arm 2 is rotatably sleeved on the rocker arm shaft 1. One claw of the three-claw rocker arm 2 is connected to the speed regulator 5 through a pull rod structure, and the second claw of the three-claw rocker arm 2 is hinged to one end of the hydraulically retractable A-row pull rod 7, and the other end of the hydraulically retractable A-row pull rod 7 is connected to multiple injection pumps 6 in the A-row through an A-row elastic reset control rod mechanism; the third claw of the three-claw rocker arm 2 is hinged to one end of the B-row pull rod 12, and the other end of the B-row pull rod 12 is connected to multiple injection pumps 16 in the B-row through an B-row elastic reset control rod mechanism;

[0041] The rocker shaft 1, the three-claw rocker arm 2 and the hydraulically retractable A-column tie rod 7 are provided with interconnected oil holes, and the solenoid valve 11 is connected to the oil holes through an oil circuit. The solenoid valve 11 is also connected to the lubricating oil with a certain pressure in the diesel engine lubricating oil system through the oil circuit.

[0042] Specifically, the hydraulically retractable A-column tie rod 7 comprises an A-column tie rod 7-1 and an A-column hydraulic cylinder 7-2, one end of the A-column tie rod 7-1 is fixedly connected to the piston of the A-column hydraulic cylinder 7-2; a tie rod oil hole 7-1-1 is provided inside the A-column tie rod 7-1, and the tie rod oil hole 7-1-1 is connected to the oil chamber inside the A-column hydraulic cylinder 7-2 through the oil hole in the piston;

[0043] like Fig.12 As shown, the rocker shaft 1 is provided with a rocker shaft central oil hole 1-1 and a rocker shaft radial oil hole 1-2, and the second claw of the three-claw rocker arm 2 connected to the A-row tie rod 7-1 is provided with a rocker arm oil hole 2-1; a rocker arm bushing 17 is provided between the three-claw rocker arm 2 and the rocker shaft 1, and the rocker arm bushing 17 is interference-fitted in the inner hole of the three-claw rocker arm 2 and has a clearance fit with the rocker shaft 1; the inner hole of the rocker arm bushing 17 is provided with an annular oil groove 17-1 and a When the rocker arm bushing 17 is installed in the three-claw rocker arm 2, the bushing radial oil hole 17-2 is connected to the rocker arm oil hole 2-1; when the three-claw rocker arm 2 is sleeved on the rocker arm shaft 1, the annular oil groove 17-1 on the rocker arm bushing 17 is just connected to the rocker arm shaft radial oil hole 1-2 on the rocker arm shaft 1, ensuring that when the three-claw rocker arm 2 and the rocker arm shaft 1 rotate relative to each other, the pressure lubricating oil of the rocker arm shaft 1 can be transported to the oil passage of the three-claw rocker arm 2;

[0044] The other end of the A column tie rod 7-1 is hinged to the second claw of the three-claw rocker arm 2; the end of the A column tie rod 7-1 is connected to the A column tie rod hinge joint 18, and the A column tie rod hinge joint 18 is hinged to the second claw of the three-claw rocker arm 2 through the A column pin 19, and the A column pin 19 is provided with a connected pin center and radial oil hole 19-1 and a pin annular oil groove 19-2, one end of the A column pin 19 is interference mounted on the second claw of the three-claw rocker arm 2, and the A column pin 19 is directly connected to the oil hole of the matching part of the three-claw rocker arm 2, and the other end of the A column pin 19 is matched with the A column tie rod hinge joint 18 through a joint bushing 20, and the joint bushing 20 It is interference-fitted in the inner hole of the A-column tie rod hinge joint 18 and has a clearance fit with the A-column pin 19, and can rotate around the A-column pin 19; one end of the A-column pin 19 that cooperates with the A-column tie rod hinge joint 18 is provided with a pin annular oil groove 19-2, and the pin annular oil groove 19-2 is connected with the pin center and a radial oil hole in the radial oil hole 19-1; during operation, the pin annular oil groove 19-2 is filled with lubricating oil, and during the rotation of the A-column tie rod hinge joint 18, the lubricating oil can always pass through the oil hole of the A-column pin 19, the oil hole on the joint bushing 20 and the oil hole in the A-column tie rod hinge joint 18 to enter the tie rod oil hole 7-1-1 in the center of the A-column tie rod 7-1.

[0045] In the above structure, the rocker bushing 17 in the three-claw rocker arm 2 is clearance-fitted with the rocker shaft 1. There are two O-rings on both sides of the axial direction of the oil groove of the rocker bushing 17. After the O-rings are installed, sealing is achieved. A steel ball is provided at the end of the oil hole of the A column pin 19. The steel ball and the hole have an interference fit to achieve end sealing. The joint bushing 20 is clearance-fitted with the A column pin 19. Sealing rings are provided at both ends to prevent oil leakage and avoid insufficient pressure. A retaining ring is provided at the end of the A column pin 19 to prevent the A column tie rod hinge joint 18 from sliding off the A column pin 19 to ensure reliable connection.

[0046] Specifically, the A-row elastic reset control lever mechanism includes an A-row high-pressure oil pump control lever 9, an A-row two-claw rocker arm 8 and an A-row reset spring 10. The A-row high-pressure oil pump control lever 9 is connected to the rack pull rod of multiple A-row fuel injection pumps 6. The A-row high-pressure oil pump control lever 9 is fixedly sleeved with an A-row two-claw rocker arm 8. One claw of the A-row two-claw rocker arm 8 is hinged to the rear end of the A-row hydraulic cylinder 7-2, and the other claw of the A-row two-claw rocker arm 8 is hinged to one end of the A-row reset spring 10. The other end of the A-row reset spring 10 is fixedly connected to the diesel engine body through a fixing pin at the end of the spring.

[0047] The B-row elastic reset control lever mechanism includes a B-row high-pressure oil pump control lever 14, a B-row two-claw rocker arm 13 and a B-row reset spring 15. The B-row high-pressure oil pump control lever 14 is connected to the rack pull rod of the B-row multiple fuel injection pumps 16. The B-row high-pressure oil pump control lever 14 is fixedly sleeved with a B-row two-claw rocker arm 13. One claw of the B-row two-claw rocker arm 13 is hinged to one end of the B-row pull rod 12, and the other claw of the B-row two-claw rocker arm 13 is hinged to one end of the B-row reset spring 15. The other end of the B-row reset spring 15 is fixedly connected to the diesel engine body through a fixing pin at the end of the spring.

[0048] Specifically, the pull rod structure includes a pull rod 3 and a speed regulator output rocker arm 4, one claw of the three-claw rocker arm 2 is hinged to one end of the pull rod 3, the other end of the pull rod 3 is hinged to the speed regulator output rocker arm 4, and the speed regulator output rocker arm 4 is connected to the throttle of the speed regulator 5.

[0049] Preferably, the solenoid valve 11 is a two-position three-way solenoid valve.

[0050] Stop control principle:

[0051] like Figure 4-6 As shown, when the diesel engine is started, the solenoid valve is not energized, and the 2-3 interface of the solenoid valve is connected. When the governor pulls the high-pressure fuel injection pump rack rod, the hydraulic retractable A column rod with hydraulic piston has no internal lubricating oil pressure. Under the action of the A column return spring, the lubricating oil in the hydraulic retractable A column rod will be pressed back to the system from the oil hole in the rod, and finally return to the lubricating oil tank. At this time, the hydraulic retractable A column rod moves only in the A column hydraulic cylinder with the speed regulation of the governor, and the rear end of the A column hydraulic cylinder does not move. Therefore, the rack of the A column fuel injection pump is not pulled, and the fuel injection pump rack is still in the zero position and cannot be injected into the cylinder through the injector. The A column fuel injection pump does not fire. The B column is a rigid rod. The high-pressure fuel pump rack is pulled, the B column fuel injection pump fires, and the diesel engine runs.

[0052] like Figure 7-9 As shown in the figure, when the diesel engine load is higher than the low load area, the solenoid valve is energized, the 1-2 interface is connected, and the pressure oil enters the hydraulic retractable A column tie rod with hydraulic piston through the oil channel. The pressure oil will expand the piston, which will compress the A column return spring and drive the high-pressure oil pump rack tie rod. When the throttle is increased, the injection pump starts to compress the fuel and spray it into the cylinder through the injector. The A column cylinder ignites and starts working. At this time, the diesel engine power is improved. In theory, if the governor tie rod remains unchanged, the diesel engine power will increase to twice the initial load after the A column cylinder is running.

[0053] When the diesel engine is shut down normally or the load is reduced, when the diesel engine load drops to the low load critical value, the solenoid valve is closed, and under the action of the A column return spring, the lubricating oil in the piston rod of the hydraulically retractable A column tie rod is pressed back into the system and finally flows back to the lubricating oil tank.

[0054] The utility model is a control system and method for realizing diesel engine exhaust stop based on the characteristics of compressed fluid. By controlling the pressure increase / depressurization switch in the pull rod with a hydraulic piston through an electromagnetic valve, a hydraulic rod with a variable pull rod length is realized, so that the high-pressure oil pump can be switched between a working state and a stopped working state, thereby realizing the mutual conversion between diesel engine exhaust stop and non-stop exhaust. By stopping the exhaust, the load of the diesel engine is borne by a row of cylinders. Although the load of the diesel engine is reduced, the operating cylinders are still operating under higher load conditions. In this way, the low-load operating area of ​​the diesel engine is relatively reduced, the long-term operating area of ​​the diesel engine is expanded, fuel is saved, and the economy of the diesel engine is improved. The rate of carbon deposit generation is reduced, the maintenance time is extended, and the maintainability of the diesel engine is improved. It is convenient to realize the automatic and intelligent control of high-power diesel engines.

[0055] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0056] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A multi-row cylinder diesel engine stop system based on hydraulic control of pull rod extension, comprising a rocker shaft (1), a plurality of injection pumps (6) in row A, a pull rod (12) in row B, and a plurality of injection pumps (16) in row B, characterized in that: It also includes a hydraulically retractable A-column pull rod (7) and a solenoid valve (11); a three-claw rocker arm (2) is rotatably sleeved on the rocker arm shaft (1); one claw of the three-claw rocker arm (2) is connected to the speed regulator (5) through a pull rod structure; the second claw of the three-claw rocker arm (2) is hinged to one end of the hydraulically retractable A-column pull rod (7); the other end of the hydraulically retractable A-column pull rod (7) is connected to multiple A-column fuel injection pumps (6) through an A-column elastic reset control rod mechanism; the third claw of the three-claw rocker arm (2) is hinged to one end of the B-column pull rod (12); the other end of the B-column pull rod (12) is connected to multiple B-column fuel injection pumps (16) through a B-column elastic reset control rod mechanism; the rocker arm shaft (1), the three-claw rocker arm (2) and the hydraulically retractable A-column pull rod (7) are provided with interconnected oil holes inside; the solenoid valve (11) is connected to the oil hole on the rocker arm shaft (1) through an oil circuit.

2. The multi-row cylinder diesel engine stop system based on hydraulic control of pull rod extension according to claim 1 is characterized in that: The hydraulically retractable A-row tie rod (7) comprises an A-row tie rod (7-1) and an A-row hydraulic cylinder (7-2); one end of the A-row tie rod (7-1) is fixedly connected to the piston of the A-row hydraulic cylinder (7-2); a tie rod oil hole (7-1-1) is provided inside the A-row tie rod (7-1); the tie rod oil hole (7-1-1) is connected to the oil chamber inside the A-row hydraulic cylinder (7-2) through the oil hole in the piston; The rocker shaft (1) is provided with a rocker shaft central oil hole (1-1) and a rocker shaft radial oil hole (1-2); the second claw of the three-claw rocker arm (2) connected to the A-row tie rod (7-1) is provided with a rocker oil hole (2-1); a rocker bushing (17) is provided between the three-claw rocker arm (2) and the rocker shaft (1); the rocker bushing (17) is interference-fitted in the inner hole of the three-claw rocker arm (2) and has a clearance fit with the rocker shaft (1); the inner hole of the rocker bushing (17) is provided with an annular oil groove (17-1) and a groove (17-2) which is in contact with the annular oil groove (17-1). -1) connected to the radial oil hole (17-2) of the bushing, when the rocker bushing (17) is installed in the three-claw rocker arm (2), the radial oil hole (17-2) of the bushing is connected to the rocker arm oil hole (2-1); when the three-claw rocker arm (2) is sleeved on the rocker arm shaft (1), the annular oil groove (17-1) on the rocker bushing (17) is just connected to the rocker arm shaft radial oil hole (1-2) on the rocker arm shaft (1), ensuring that when the three-claw rocker arm (2) and the rocker arm shaft (1) rotate relative to each other, the pressure lubricating oil of the rocker arm shaft (1) can be transported to the oil passage of the three-claw rocker arm (2); The other end of the A-column tie rod (7-1) is hinged to the second claw of the three-claw rocker arm (2); the end of the A-column tie rod (7-1) is connected to the A-column tie rod hinge joint (18), and the A-column tie rod hinge joint (18) is hinged to the second claw of the three-claw rocker arm (2) through the A-column pin (19), and the A-column pin (19) is provided with a connected pin center and radial oil hole (19-1) and a pin annular oil groove (19-2), one end of the A-column pin (19) is interference-mounted on the second claw of the three-claw rocker arm (2), and the oil hole of the matching part of the A-column pin (19) and the three-claw rocker arm (2) is directly connected, and the other end of the A-column pin (19) is matched with the A-column tie rod hinge joint (18) through a joint bushing (20), and the joint bushing The sleeve (20) is interference-fitted in the inner hole of the A-column tie rod hinge joint (18) and is clearance-matched with the A-column pin shaft (19), and can rotate around the A-column pin shaft (19); one end of the A-column pin shaft (19) that cooperates with the A-column tie rod hinge joint (18) is provided with a pin shaft annular oil groove (19-2), and the pin shaft annular oil groove (19-2) is connected with the center of the pin shaft and a radial oil hole in the radial oil hole (19-1); during operation, the pin shaft annular oil groove (19-2) is filled with lubricating oil, and during the rotation of the A-column tie rod hinge joint (18), the lubricating oil can always pass through the oil hole of the A-column pin shaft (19), the oil hole on the joint bushing (20) and the A-column tie rod hinge joint (18) to enter the tie rod oil hole (7-1-1) in the center of the A-column tie rod (7-1).

3. The multi-row cylinder diesel engine stop system based on hydraulic control of pull rod extension according to claim 2 is characterized in that: The A-row elastic reset control lever mechanism comprises an A-row high-pressure oil pump control lever (9), an A-row two-claw rocker arm (8) and an A-row reset spring (10); the A-row high-pressure oil pump control lever (9) is connected to the rack pull rod of the A-row multiple fuel injection pumps (6); the A-row two-claw rocker arm (8) is fixedly sleeved on the A-row high-pressure oil pump control lever (9); one claw of the A-row two-claw rocker arm (8) is hinged to the rear end of the A-row hydraulic cylinder (7-2); the other claw of the A-row two-claw rocker arm (8) is hinged to one end of the A-row reset spring (10); and the other end of the A-row reset spring (10) is fixedly connected to the diesel engine body; The B-row elastic reset control lever mechanism comprises a B-row high-pressure oil pump control lever (14), a B-row two-claw rocker arm (13) and a B-row reset spring (15); the B-row high-pressure oil pump control lever (14) is connected to the rack pull rod of the B-row multiple fuel injection pumps (16); a B-row two-claw rocker arm (13) is fixedly sleeved on the B-row high-pressure oil pump control lever (14); one claw of the B-row two-claw rocker arm (13) is hinged to one end of the B-row pull rod (12); the other claw of the B-row two-claw rocker arm (13) is hinged to one end of the B-row reset spring (15); and the other end of the B-row reset spring (15) is fixedly connected to the diesel engine body.

4. The multi-row cylinder diesel engine stop system based on hydraulic control of pull rod extension according to claim 1 is characterized in that: The pull rod structure comprises a pull rod (3) and a speed regulator output rocker arm (4); one claw of the three-claw rocker arm (2) is hinged to one end of the pull rod (3); the other end of the pull rod (3) is hinged to the speed regulator output rocker arm (4); and the speed regulator output rocker arm (4) is connected to the throttle of the speed regulator (5).

Images