A device for testing the oil injection and cooling of an engine piston

Abstract

This utility model discloses a test device for oil injection cooling of engine pistons, belonging to the field of engine technology. It includes a test bench, on the upper surface of which are fixedly mounted two fixed plates, a cooling oil storage cylinder, a cooling oil return cylinder, and a simulated cylinder. A simulated crankshaft is rotatably mounted between the two fixed plates. A motor is fixedly mounted on the side of one of the fixed plates, and the output shaft of the motor is fixedly connected to one end of the simulated crankshaft. Several hinge plates are rotatably mounted on the outer surface of the simulated crankshaft. A mounting seat is rotatably mounted on the end of each hinge plate away from the simulated crankshaft, and a sliding column is detachably mounted on the mounting seat. By setting the mounting seat and sliding column for detachable connection, the piston can be disassembled and replaced in conjunction with a top cover plate. This allows for oil injection cooling tests on pistons made of different materials under the same environment, improving test diversity, facilitating operation and adjustment, and providing simple results.

Description

Technical Field

[0001] This utility model belongs to the field of engine technology, specifically relating to a test device for engine piston oil injection cooling. Background Technology

[0002] An engine is a device that converts other forms of energy, such as chemical energy and electrical energy, into mechanical energy. It is widely used in automobiles, aviation, industrial equipment and other fields. An engine performs work by injecting fuel through internal fuel injectors to drive the piston to move.

[0003] When an engine piston injects fuel, the reciprocating motion of the piston generates high temperatures, thus requiring cooling oil to lower the temperature. However, the cooling process needs to be tested to draw conclusions. Existing cooling test devices do not allow for convenient disassembly and replacement of different types of pistons for testing in actual use, and the cooling oil flowing back from the cooling process is not convenient for filtering out impurities. Therefore, we propose a test device for engine piston fuel injection cooling. Utility Model Content

[0004] The purpose of this invention is to provide a test device for engine piston oil injection cooling, in order to solve the problems mentioned in the background art that existing cooling test devices cannot easily disassemble and replace internal pistons for different types of tests during actual use, and that the cooling oil flowing back out is not easy to filter out impurities.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a test device for engine piston oil injection cooling, comprising a test platform, on the upper surface of which two fixed plates, a cooling oil storage cylinder, a cooling oil return cylinder, and a simulated cylinder are fixedly mounted. A simulated crankshaft is rotatably mounted between the two fixed plates. A motor is fixedly mounted on the side of one of the fixed plates, and the output shaft of the motor is fixedly connected to one end of the simulated crankshaft. Several hinge plates are rotatably mounted on the outer surface of the simulated crankshaft. A mounting seat is rotatably mounted on the end of the hinge plate away from the simulated crankshaft. A sliding column is detachably mounted on the mounting seat. Several piston movement chambers are formed inside the simulated cylinder. The sliding column slides into the corresponding piston movement chamber and is fixedly mounted with a simulated piston. The surface of the simulated cylinder... A top cover plate is threadedly installed at the position directly opposite the piston movement chamber. A simulated air pipe is connected to the top cover plate. A temperature sensor is fixedly installed on the inner wall of the piston movement chamber. A cooling oil extraction pump is fixedly installed on the upper surface of the cooling oil storage cylinder. The inlet pipe of the cooling oil extraction pump extends into the interior of the cooling oil storage cylinder. A cooling oil delivery pipe is connected to the outlet pipe of the cooling oil extraction pump. The cooling oil delivery pipe passes through the simulated cylinder and is connected to the piston movement chamber. A control valve is installed on the cooling oil delivery pipe. A cooling oil return pipe is connected to the simulated cylinder at the position directly opposite the piston movement chamber. A sealing cover is rotatably installed on the surface of the cooling oil return cylinder. The cooling oil return pipe is connected to the sealing cover. A filter screen is detachably installed inside the cooling oil return cylinder. A drain pipe is installed on the side of the cooling oil return cylinder.

[0006] By adopting the above scheme, the piston can be disassembled and replaced by setting up a mounting base and using a sliding column for detachable connection. This allows for the use of a top cover plate to perform oil spray cooling tests on pistons made of different materials under the same environment, thereby increasing the diversity of tests. The operation and adjustment are convenient and the results are simple. By setting up a filter screen cooling oil return cylinder, the cooling oil discharged after cooling can be filtered to remove particulate matter. The filter screen is designed to be detachable, making it convenient to replace and clean the filter screen in a timely manner.

[0007] In the above scheme, it should be noted that both the motor and the temperature sensor are electrically connected to an external power supply.

[0008] In a preferred embodiment, an assembly rod is slidably mounted on the side of the mounting base, an assembly operation panel is fixedly mounted on one end of the assembly rod, an assembly spring is fixedly mounted between the assembly operation panel and the mounting base, and an assembly groove for inserting the assembly rod is provided at the bottom end of the sliding column.

[0009] By using the above solution, the assembly rod is inserted into the assembly slot, and the elastic force of the assembly spring is used in conjunction with the assembly rod to drive the assembly rod to quickly insert into the assembly slot, thereby improving the convenience of the assembly and locking operation.

[0010] In a preferred embodiment, a plurality of alignment guide strips are fixedly installed on the inner wall of the mounting base, and a plurality of alignment guide grooves are formed on the outer surface of the bottom end of the sliding column. The alignment guide strips and alignment guide grooves are used in conjunction.

[0011] Using the above scheme, when the sliding column is inserted into the mounting base, it is inserted directly into the alignment guide groove and the alignment guide strip, thereby achieving convenient alignment and assembly.

[0012] In a preferred embodiment, a plurality of fixing blocks are fixedly installed on the surface of the filter screen, and fixing bolts are threaded onto the fixing blocks. The fixing blocks and the cooling oil return cylinder are detachably connected by the fixing bolts.

[0013] By using the above solution, a fixing block is used in conjunction with a fixing bolt to lock the filter screen in place, preventing the filter screen from shaking or shifting.

[0014] In a preferred embodiment, a support frame is fixedly installed on the inner wall of the cooling oil return cylinder, and the filter screen is attached to the upper surface of the support frame.

[0015] By using the above solution and the support frame, the filter can be supported during installation, thus improving the ease of assembly.

[0016] In a preferred embodiment, an observation port is provided on the simulated cylinder body at a position directly opposite the piston movement chamber, and the inner wall of the observation port has a transparent viewing window.

[0017] By adopting the above scheme, the transparent viewing window allows for easy observation of the piston's movement, facilitating better control of experimental data.

[0018] Compared with the prior art, the beneficial effects of this utility model are:

[0019] This engine piston oil injection cooling test device is designed with a mounting base and a sliding column for detachable connection. It can be used with a top cover plate to remove and replace the piston, and can perform oil injection cooling tests on pistons made of different materials under the same environment, thereby increasing the diversity of tests. It is easy to operate and adjust, and the results are simple.

[0020] This engine piston oil injection cooling test device uses a filter screen and a cooling oil return cylinder to filter and remove particulate matter from the cooled oil. The filter screen is detachable, making it convenient to replace and clean it in a timely manner. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of this utility model;

[0022] Figure 2This is a structural schematic diagram of the present invention from another angle;

[0023] Figure 3 This is a cross-sectional structural diagram of the present invention;

[0024] Figure 4 This is a schematic diagram of the exploded structure of the hinge plate and sliding column of this utility model;

[0025] Figure 5 This is a schematic diagram of the structure of the mounting base of this utility model;

[0026] Figure 6 This is a schematic diagram of the cross-section of the cooling oil return cylinder of this utility model.

[0027] In the diagram: 1. Test bench; 2. Fixing plate; 3. Cooling oil storage cylinder; 4. Cooling oil return cylinder; 5. Simulated cylinder block; 6. Simulated crankshaft; 7. Hinge plate; 8. Mounting seat; 9. Sliding column; 10. Simulated piston; 11. Top cover plate; 12. Simulated air pipe; 13. Temperature sensor; 14. Cooling oil extraction pump; 15. Cooling oil delivery pipe; 16. Control valve; 17. Cooling oil return pipe; 18. Sealing cap; 19. Filter screen; 20. Motor; 21. Assembly rod; 22. Assembly control panel; 23. Assembly spring; 24. Alignment guide bar; 25. Fixing block; 26. Fixing bolt; 27. Support frame; 28. Drain pipe; 29. ​​Transparent viewing window. Detailed Implementation

[0028] Please see Figure 1-6This utility model provides a test device for engine piston oil injection cooling, including a test platform 1. Two fixed plates 2, a cooling oil storage cylinder 3, a cooling oil return cylinder 4, and a simulated cylinder 5 are fixedly mounted on the upper surface of the test platform 1. A simulated crankshaft 6 is rotatably mounted between the two fixed plates 2. A motor 20 is fixedly mounted on the side of one of the fixed plates 2. The output shaft of the motor 20 is fixedly connected to one end of the simulated crankshaft 6. Several hinge plates 7 are rotatably mounted on the outer surface of the simulated crankshaft 6. A mounting seat 8 is rotatably mounted on the end of the hinge plate 7 away from the simulated crankshaft 6. A sliding column 9 is detachably mounted on the mounting seat 8. Several piston movement chambers are opened inside the simulated cylinder 5. The sliding column 9 slides into the corresponding piston movement chamber and is fixedly mounted with a simulated piston 10. Threads are present on the surface of the simulated cylinder 5 directly opposite the piston movement chamber. A top cover plate 11 is installed, and a simulated air pipe 12 is connected to the top cover plate 11. A temperature sensor 13 is fixedly installed on the inner wall of the piston movement chamber. A cooling oil extraction pump 14 is fixedly installed on the upper surface of the cooling oil storage cylinder 3. The inlet pipe of the cooling oil extraction pump 14 extends into the interior of the cooling oil storage cylinder 3. The outlet pipe of the cooling oil extraction pump 14 is connected to a cooling oil delivery pipe 15. The cooling oil delivery pipe 15 passes through the simulated cylinder 5 and is connected to the piston movement chamber. A control valve 16 is installed on the cooling oil delivery pipe 15. A cooling oil return pipe 17 is connected to the simulated cylinder 5 at a position directly opposite the piston movement chamber. A sealing cover 18 is rotatably installed on the surface of the cooling oil return cylinder 4. The cooling oil return pipe 17 is connected to the sealing cover 18. A filter screen 19 is detachably installed inside the cooling oil return cylinder 4. A drain pipe 28 is installed on the side of the cooling oil return cylinder 4.

[0029] The mounting base 8 is detachably connected to the sliding column 9, which, together with the top cover plate 11, allows for the disassembly and replacement of the piston. This enables oil spray cooling tests on pistons made of different materials under the same environment, increasing the diversity of tests. The operation and adjustment are convenient, and the results are simple. By using the filter screen 19 and the cooling oil return cylinder 4, the cooling oil discharged after cooling can be filtered to remove particulate matter. The filter screen 19 is detachable, making it convenient to replace and clean it in a timely manner.

[0030] An assembly rod 21 is slidably mounted on the side of the mounting base 8. An assembly operation plate 22 is fixedly mounted on one end of the assembly rod 21. An assembly spring 23 is fixedly mounted between the assembly operation plate 22 and the mounting base 8. An assembly slot for inserting the assembly rod 21 is opened at the bottom of the sliding column 9. By inserting the assembly rod 21 into the assembly slot and using the elastic force of the assembly spring 23 to cooperate with the assembly rod 21, the assembly rod 21 can be driven to quickly insert into the assembly slot, improving the convenience of assembly and locking operation.

[0031] Several alignment guide strips 24 are fixedly installed on the inner wall of the mounting base 8. Several alignment guide grooves are opened on the outer surface of the bottom end of the sliding column 9. The alignment guide strips 24 and the alignment guide grooves are used together. When the sliding column 9 is inserted into the mounting base 8, it is inserted by aligning the alignment guide grooves with the alignment guide strips 24, thereby realizing convenient alignment and assembly.

[0032] Several fixing blocks 25 are fixedly installed on the surface of the filter screen 19. Fixing bolts 26 are threaded on the fixing blocks 25. The fixing blocks 25 and the cooling oil return cylinder 4 are detachably connected by the fixing bolts 26. The fixing blocks 25 are used in conjunction with the fixing bolts 26 to lock the filter screen 19 in place and prevent the filter screen 19 from shaking or moving.

[0033] A support frame 27 is fixedly installed on the inner wall of the cooling oil return cylinder 4. The filter screen 19 is attached to the upper surface of the support frame 27. The support frame 27 is used in conjunction to provide support for the filter screen 19 during installation, thereby improving the ease of assembly.

[0034] An observation port is provided on the simulated cylinder 5, directly opposite the piston movement chamber, and a transparent viewing window 29 is provided on the inner wall of the observation port. The transparent viewing window 29 can facilitate the observation of the piston movement and make it easier to grasp the experimental data.

[0035] In use, the motor 20 and the cooling oil extraction pump 14 are started. The motor 20 drives the simulated crankshaft 6 to rotate, which in turn, in conjunction with the hinge plate 7, drives the mounting base 8 to move the sliding column 9 up and down, thereby driving the simulated piston 10 to move up and down. At the same time, the cooling oil extraction pump 14 draws cooling oil from the cooling oil storage cylinder 3 and delivers it to the simulated cylinder 5 through the cooling oil delivery pipe 15, thus cooling the simulated piston 10. The cooled oil then flows back to the cooling oil return cylinder 4 through the cooling oil return pipe 17, where particulate matter is filtered out by the filter screen 19. The temperature sensor 13 is used to detect the temperature of the space where the simulated piston 10 is located. When it is necessary to replace the simulated piston 10 with a different material type, pull the assembly operation plate 22 to drive the assembly rod 21 out of the assembly slot. At this time, the mounting base 8 and the sliding column 9 are unlocked. Twist the top cover plate 11 to make the top cover plate 11 separate from the simulated cylinder 5, and then the simulated piston 10 can be pulled up and removed. Place the new simulated piston 10 into the piston movement chamber inside the simulated cylinder 5. At this time, the sliding column 9 is inserted into the mounting base 8. Release the assembly operation plate 22 and use the elastic force of the assembly spring 23 to drive the assembly rod 21 into the assembly slot to lock it. When it is necessary to clean the filter screen 19, open the sealing cover 18, unscrew the fixing bolt 26 to unlock the filter screen 19, and then pull the filter screen 19 up.

Claims

1. An apparatus for engine piston oil injection cooling test, characterized by: The test bench (1) includes two fixed plates (2), a cooling oil storage cylinder (3), a cooling oil return cylinder (4), and a simulated cylinder (5) fixedly mounted on its upper surface. A simulated crankshaft (6) is rotatably mounted between the two fixed plates (2). A motor (20) is fixedly mounted on the side of one of the fixed plates (2). The output shaft of the motor (20) is fixedly connected to one end of the simulated crankshaft (6). Several hinge plates (7) are rotatably mounted on the outer surface of the simulated crankshaft (6). A mounting seat (8) is rotatably mounted on the end of the hinge plate (7) away from the simulated crankshaft (6). A sliding column (9) is detachably mounted on the mounting seat (8). Several piston movement chambers are opened inside the simulated cylinder (5). The sliding column (9) slides and extends into the piston movement chamber at the corresponding position and is fixedly mounted with a simulated piston (10). A top cover plate (11) is threadedly mounted on the surface of the simulated cylinder (5) at the position opposite to the piston movement chamber. A simulated air pipe (12) is connected to the plate (11). A temperature sensor (13) is fixedly installed on the inner wall of the piston movement chamber. A cooling oil extraction pump (14) is fixedly installed on the upper surface of the cooling oil storage cylinder (3). The inlet pipe of the cooling oil extraction pump (14) extends into the interior of the cooling oil storage cylinder (3). A cooling oil delivery pipe (15) is connected to the outlet pipe of the cooling oil extraction pump (14). The cooling oil delivery pipe (15) passes through the simulated cylinder (5) and connects with the piston movement chamber. A control valve (16) is installed on the connected cooling oil delivery pipe (15). A cooling oil return pipe (17) is connected and installed on the simulated cylinder (5) at the position opposite to the piston movement chamber. A sealing cover (18) is rotatably installed on the surface of the cooling oil return cylinder (4). The cooling oil return pipe (17) is connected to the sealing cover (18). A filter screen (19) is detachably installed inside the cooling oil return cylinder (4). A drain pipe (28) is installed on the side of the cooling oil return cylinder (4).

2. The apparatus for engine piston oil injection cooling test according to claim 1, characterized in that: An assembly rod (21) is slidably mounted on the side of the mounting base (8). An assembly operation disk (22) is fixedly mounted on one end of the assembly rod (21). An assembly spring (23) is fixedly mounted between the assembly operation disk (22) and the mounting base (8). An assembly groove for inserting the assembly rod (21) is provided at the bottom end of the sliding column (9).

3. The apparatus for engine piston oil injection cooling test according to claim 1, characterized in that: The mounting base (8) has several alignment guides (24) fixedly installed on its inner wall, and the bottom outer surface of the sliding column (9) has several alignment guide grooves. The alignment guides (24) and the alignment guide grooves are used in conjunction.

4. The apparatus for engine piston oil injection cooling test according to claim 1, characterized in that: The filter screen (19) has several fixing blocks (25) fixedly installed on its surface. Fixing bolts (26) are threaded on the fixing blocks (25). The fixing blocks (25) and the cooling oil return cylinder (4) are detachably connected by the fixing bolts (26).

5. The apparatus for engine piston oil injection cooling test of claim 1, wherein: The inner wall of the cooling oil return cylinder (4) is fixedly installed with a support frame (27), and the filter screen (19) is attached to the upper surface of the support frame (27).

6. The apparatus for engine piston oil injection cooling test of claim 1, wherein: An observation port is provided on the simulated cylinder (5) at the position directly opposite the piston movement chamber, and there is a transparent viewing window (29) on the inner wall of the observation port.

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