Mechanically regulated injection engine unit

Abstract

The utility model discloses a kind of mechanical type regulating engine unit of oil injection, belong to engine unit technical field, solve the problem of high cost of existing engine ECU control oil injection, inconvenient maintenance.It engine includes base and engine, the input end of corresponding governor of mechanical oil injection pump is fixedly connected with pull rod, the end of pull rod far from governor is hingedly connected with screw rod, the outer wall of mechanical oil injection pump of pull rod side is fixedly installed with support block, the top of support block is equipped with U-shaped groove, the width of U-shaped groove is greater than the width of screw rod, the end of screw rod far from pull rod is penetrated and is slidably connected in U-shaped groove, screw rod on the both sides of support block is all threadedly connected with compression nut, the compression nut includes rotation block, sleeve and spherical block connected in sequence, the diameter of rotation block, sleeve and spherical block decreases in sequence.The engine unit of the utility model is convenient to adjust oil injection amount, and relatively lower cost, and maintenance is also convenient.

Description

Technical Field

[0001] This utility model relates to the field of engine unit technology, and more specifically, to an engine unit with mechanically adjustable fuel injection. Background Technology

[0002] A generator set is a complete set of mechanical equipment that converts other forms of energy into electrical energy. Driven by power machinery such as diesel engines or gas engines, it converts the energy generated by fuel combustion into mechanical energy, which is then transferred to a generator, and finally converted into electrical energy, which is then output to electrical equipment for use; or the mechanical energy directly drives the drive components, such as water pumps or sand dredgers, and is an important auxiliary equipment for production and processing.

[0003] Traditional generator sets typically include a base, an engine, and actuators such as a generator or water pump. The engine and actuators are fixedly mounted on the base, while the engine's output is directly connected to drive them, as illustrated in patent CN 204713412 U, which discloses a high-efficiency and stable yacht generator set. Current engine sets primarily use ECU (Electronic Control Unit) control for fuel injection, as seen in CN 214660571 U, which discloses a common rail system for marine engines. This system offers higher control precision and greater convenience.

[0004] However, for generator sets, which are usually used for emergency or field applications, such as backup generator sets, they are only started and used when the power is off. In this case, the ECU electronic control system is prone to short circuits or failure if left unused for a long time. In addition, generator sets used in the field are subject to harsh operating conditions, and the ECU electronic control system is also prone to damage. Moreover, the cost of the ECU electronic control system is relatively high, and maintenance is relatively difficult, requiring professional technicians.

[0005] Therefore, it is necessary to design an engine unit with mechanically regulated fuel injection to solve the aforementioned technical problems. Utility Model Content

[0006] The technical problem to be solved by this utility model is to address the above-mentioned shortcomings of the prior art. Its purpose is to provide an engine unit with mechanically adjustable fuel injection, which is convenient for adjusting the fuel injection quantity, and has relatively low cost and is easy to maintain.

[0007] The technical solution of this utility model is as follows: A mechanically adjustable fuel injection engine unit includes a base and an engine. The top of the base is provided with multiple support seats, and the engine's feet are fixedly mounted on the support seats one by one. The engine is provided with a common rail for supplying fuel to the injectors. One end of the common rail is fixedly connected to a high-pressure fuel pump that connects the fuel tank to the common rail. The high-pressure fuel pump is a mechanical fuel injection pump. A lever is fixedly connected to the input end of a governor corresponding to the mechanical fuel injection pump, with the end of the lever furthest from the governor... A screw is hinged to the pull rod. A support block is fixedly installed on the outer wall of the mechanical fuel injection pump on one side of the pull rod. A U-shaped groove is opened on the top of the support block. The width of the U-shaped groove is greater than the width of the screw. The end of the screw away from the pull rod passes through and is slidably engaged in the U-shaped groove. A clamping nut is threadedly connected to the screw on both sides of the support block. The clamping nut includes a rotating block, a sleeve and a spherical block connected in sequence. The diameters of the rotating block, sleeve and spherical block decrease in sequence, and the end faces of the spherical blocks corresponding to the two clamping nuts are embedded in the U-shaped groove.

[0008] As a further improvement, the top of the support block is also provided with a cover plate that covers the U-shaped groove.

[0009] Furthermore, the cover plate is connected to the support block by countersunk screws.

[0010] Furthermore, the rotating block, sleeve, and spherical block are integrally formed.

[0011] Furthermore, the outer wall of the mechanical fuel injection pump on the rear side of the pull rod can be detachably provided with scale lines.

[0012] Furthermore, a clutch is connected to the output end of the engine.

[0013] Furthermore, the clutch release fork extends through to the outside of the clutch and is fixedly connected to an operating lever.

[0014] Beneficial effects

[0015] Compared with the prior art, this utility model has the following advantages:

[0016] 1. The engine unit of this utility model uses a mechanical fuel injection pump as a high-pressure fuel pump to supply fuel to the common rail. When adjusting the fuel injection quantity, the two clamping nuts can be loosened by turning them, which pushes the screw to move and drives the tie rod to swing, thereby driving the governor to rotate. This allows the fuel injection quantity of the mechanical fuel injection pump to be adjusted. After the tie rod is adjusted to the appropriate position, the two clamping nuts are tightened to press the support block, thereby locking the position of the screw and locking the mechanical fuel injection pump at a fixed speed, thus achieving the purpose of fixing the fuel injection quantity. This facilitates the adjustment of the fuel injection quantity. Moreover, the mechanical adjustment method has relatively low cost, long service life, and convenient maintenance.

[0017] 2. The engine unit of this utility model, by connecting a clutch to the output end of the engine, allows the generator, sand dredger, water pump, or other actuators to be connected to the output end of the clutch during actual use. When temporary maintenance of the actuator is required, the operator can operate the control lever to rotate the clutch release fork, thereby disengaging the clutch. The power output of the engine cannot be transmitted to the actuator, thus temporarily cutting off the engine's power output and facilitating temporary maintenance of the actuator. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0019] Figure 2 for Figure 1 Enlarged structural diagram at point A;

[0020] Figure 3 This is an enlarged side view of the support block structure in this utility model.

[0021] The components include: 1. Base; 2. Engine; 3. Support seat; 4. Common rail; 5. Mechanical fuel injection pump; 6. Governor; 7. Tie rod; 8. Screw; 9. Support block; 10. U-shaped groove; 11. Compression nut; 12. Cover plate; 13. Scale line; 14. Clutch; 15. Operating lever. Detailed Implementation

[0022] The present invention will be further described below with reference to specific embodiments shown in the accompanying drawings.

[0023] See Figure 1-3The present invention relates to a mechanically adjustable fuel injection engine unit, comprising a base 1 and an engine 2. The base 1 has multiple support seats 3 on its top, and the engine feet of the engine 2 are fixedly mounted on the support seats 3 in a corresponding manner. The top of the support seats 3 can be provided with shock-absorbing pads, which is prior art and will not be described in detail here. Engine 2 is equipped with a common rail 4 for supplying fuel to the injectors. The common rail 4 then distributes the fuel to the corresponding injectors of each cylinder. A high-pressure fuel pump is fixedly connected to one end of the common rail 4, connecting the fuel tank to the common rail 4, to supply high-pressure fuel to the common rail 4. The high-pressure fuel pump is a mechanical fuel injection pump 5, which is a product of existing technology, such as the ZH4102 engine high-pressure fuel pump. The mechanical fuel injection pump 5 is often used in conjunction with a governor. A lever 7 is fixedly connected to the input end of the governor 6 corresponding to the mechanical fuel injection pump 5. The governor 6 is manually adjusted through the mechanical lever 7, thereby adjusting the throttle opening. A screw 8 is hinged to the end of the lever 7 away from the governor 6. A support block 9 is fixedly installed on the outer wall of the mechanical fuel injection pump 5 on one side of the lever 7. A U-shaped groove 10 is formed on the top of the support block 9. The width of the U-shaped groove 10 is greater than the width of the screw 8. The screw 8 is located away from the lever 7. One end of the screw 8 passes through and slides into the U-shaped groove 10, meaning the screw 8 can slide up and down and left and right in the U-shaped groove 10. A clamping nut 11 is threaded onto each screw 8 on both sides of the support block 9. The clamping nut 11 can clamp and fix the screw 8 onto the support block 9. The clamping nut 11 includes a rotating block 11a, a sleeve 11b, and a spherical block 11c connected in sequence. The diameters of the rotating block 11a, sleeve 11b, and spherical block 11c decrease sequentially, and the end faces of the spherical blocks 11c corresponding to the two clamping nuts 11 are embedded in the U-shaped groove 10. When fixing the screw 8, the spherical blocks 11c embedded in the U-shaped groove 10 prevent the screw 8 from wobbling left and right. It also increases the contact area between the clamping nut 11 and the support block 9 when the screw 8 is tilted, thereby improving the stability and reliability of the screw 8's fixation. The rotating block 11a facilitates the rotation of the clamping nut 11.

[0024] The engine unit of this utility model uses a mechanical fuel injection pump as a high-pressure fuel pump to supply fuel to the common rail 4. When adjusting the fuel injection quantity, the operator can loosen the two clamping nuts 11 by turning them, and push the screw 8 to move, causing the pull rod 7 to swing, which in turn drives the governor 6 to rotate, thereby adjusting the fuel injection quantity of the mechanical fuel injection pump. After the pull rod 7 is adjusted to the appropriate position, the two clamping nuts 11 are tightened to press the support block 9, thereby locking the position of the screw 8, so that the mechanical fuel injection pump is locked at a fixed speed, thus achieving the purpose of fixing the fuel injection quantity. This makes it convenient to adjust the fuel injection quantity. Moreover, the mechanical adjustment method has relatively low cost, long service life, and convenient maintenance.

[0025] Preferably, a cover plate 12 covering the U-shaped groove 10 is provided on the top of the support block 9 to block the screw 8 and prevent it from dislodging from the U-shaped groove 10 and causing the oil supply to stop. Furthermore, the cover plate 12 is connected to the support block 9 by countersunk screws, so that the cover plate 12 can be detached and installed for easy disassembly and maintenance.

[0026] Preferably, the rotating block 11a, sleeve 11b, and spherical block 11c are integrally formed, which facilitates manufacturing and provides better structural strength. Furthermore, the clamping nut 11 and screw 8 are both made of stainless steel to reduce rust and extend service life.

[0027] Preferably, a scale line 13 is detachably provided on the outer wall of the mechanical fuel injection pump 5 on the rear side of the lever 7. Specifically, the scale line 13 can be a ruler, which is fixed to the outer wall of the mechanical fuel injection pump 5 by adhesive, achieving detachable installation. In this embodiment, by setting the scale line 13 on the rear side of the lever 7, after the lever 7 is fixed, the operator can record the scale value at the intersection of the edge of the lever 7 and the scale line 13. During subsequent inspections, the operator can observe whether the scale value at the intersection of the edge of the lever 7 and the scale line 13 changes to understand whether the throttle is loose, making it more convenient to use.

[0028] Preferably, a clutch 14 is connected to the output end of the engine 2. The clutch 14 is a friction clutch in the prior art, such as a pedal clutch used in automobiles, and the model can be B3210-1600300 clutch. The output end of the clutch 14 can be connected to an actuator such as a generator, a water pump, or a sand dredger. Furthermore, the release fork of the clutch 14 extends to the outside of the clutch 14 and is fixedly connected to an operating lever 15.

[0029] The engine unit of this utility model connects a clutch 14 to the output end of the engine. In actual use, actuators such as generators, sand dredgers, or water pumps can be connected to the output end of the clutch 14. When temporary maintenance of the actuator is required, the operator can operate the control lever 15 to rotate the release fork of the clutch 14, so that the clutch 14 is disengaged. The power output of the engine cannot be transmitted to the actuator, which can temporarily cut off the power output of the engine and facilitate temporary maintenance of the actuator.

[0030] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several modifications and improvements can be made without departing from the structure of the present utility model. These modifications and improvements will not affect the effectiveness of the present utility model or the practicality of the patent.

Claims

1. A mechanically adjustable fuel injection engine unit, comprising a base (1) and an engine (2), wherein the top of the base (1) is provided with a plurality of support seats (3), the engine feet (2) are fixedly mounted on the support seats (3) one by one, the engine (2) is provided with a common rail pipe (4) for supplying fuel to the injectors, and one end of the common rail pipe (4) is fixedly connected to a high-pressure oil pump that connects the fuel tank to the common rail pipe (4), characterized in that, The high-pressure oil pump is a mechanical injection pump (5). A pull rod (7) is fixedly connected to the input end of the speed governor (6) corresponding to the mechanical injection pump (5). A screw (8) is hinged to the end of the pull rod (7) away from the speed governor (6). A support block (9) is fixedly installed on the outer wall of the mechanical injection pump (5) on one side of the pull rod (7). A U-shaped groove (10) is opened on the top of the support block (9). The width of the U-shaped groove (10) is greater than the width of the screw (8). The screw (8) is located away from the pull rod (5). 7) One end of the support block (9) is inserted through and slidably engaged in the U-shaped groove (10). The screws (8) on both sides of the support block (9) are threaded with clamping nuts (11). The clamping nut (11) includes a rotating block (11a), a sleeve (11b) and a spherical block (11c) connected in sequence. The diameters of the rotating block (11a), the sleeve (11b) and the spherical block (11c) decrease in sequence, and the end faces of the spherical blocks (11c) corresponding to the two clamping nuts (11) are embedded in the U-shaped groove (10).

2. The engine unit with mechanically regulated fuel injection according to claim 1, characterized in that, The top of the support block (9) is also provided with a cover plate (12) that covers the U-shaped groove (10).

3. The engine unit with mechanically regulated fuel injection according to claim 2, characterized in that, The cover plate (12) is connected to the support block (9) by countersunk screws.

4. The engine unit with mechanically regulated fuel injection according to claim 1, characterized in that, The rotating block (11a), sleeve (11b), and spherical block (11c) are integrally formed structures.

5. An engine unit with mechanically regulated fuel injection according to claim 1, characterized in that, The mechanical fuel injection pump (5) on the rear side of the pull rod (7) is also detachably equipped with scale lines (13).

6. An engine unit with mechanically regulated fuel injection according to any one of claims 1-5, characterized in that, The output end of the engine (2) is connected to a clutch (14).

7. An engine unit with mechanically regulated fuel injection according to claim 6, characterized in that, The release fork of the clutch (14) extends through the outside of the clutch (14) and is fixedly connected to the operating lever (15).

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