CN220420124U - Teaching model for working principle of four-stroke diesel engine - Google Patents
Teaching model for working principle of four-stroke diesel engine Download PDFInfo
- Publication number
- CN220420124U CN220420124U CN202321549824.5U CN202321549824U CN220420124U CN 220420124 U CN220420124 U CN 220420124U CN 202321549824 U CN202321549824 U CN 202321549824U CN 220420124 U CN220420124 U CN 220420124U
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- cylinder
- machine body
- diesel engine
- crank
- piston
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- 238000002347 injection Methods 0.000 claims description 16
- 239000007924 injection Substances 0.000 claims description 16
- 239000000446 fuel Substances 0.000 claims description 6
- 238000000034 method Methods 0.000 abstract description 13
- 208000006011 Stroke Diseases 0.000 description 14
- 238000005457 optimization Methods 0.000 description 4
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
Abstract
The utility model belongs to the field of teaching models, and particularly relates to a four-stroke diesel engine working principle teaching model which comprises a machine body, a cylinder cover, a piston, a cylinder, a connecting rod, a crankshaft and a crank; the machine body is of a frame structure; the crank shaft is arranged in the middle of the machine body, and one end of the crank shaft is connected with the crank handle; the air cylinder is in a shape of a major arc cylinder and is fixed at the upper part of the machine body; the piston is arranged in the cylinder, and the bottom end of the piston is hinged with one end of the connecting rod; the other end of the connecting rod is rotatably connected with a crank part of the crankshaft; the cylinder head shape corresponds with the cylinder, and the cylinder head cover is established on the top of cylinder, and the cylinder head is equipped with inlet channel, exhaust passage and oil spout passageway, and inlet channel, exhaust passage and oil spout passageway make cylinder and outside intercommunication, and inlet channel, exhaust passage and oil spout passageway expose in the outside. The utility model can more intuitively express the working process of the four-stroke diesel engine, and the built-in LED belt machine and the indicator lamp can clearly express each stage of four strokes, thereby being convenient for students to learn.
Description
Technical Field
The utility model belongs to the field of teaching models, and particularly relates to a teaching model for the working principle of a four-stroke diesel engine.
Background
In the teaching process, in order to show the working principle of the four-stroke diesel engine, a video mode is generally adopted, and the video needs to be manufactured by a professional, so that the cost is high. In some cases, the real object is used for teaching, but the real object is heavy, the condition that the sight is blocked after the assembly exists, the internal condition is difficult to know, and the four-stroke working process is difficult to express.
Disclosure of Invention
The teaching model for the working principle of the four-stroke diesel engine provided by the utility model effectively solves the problems existing in the background technology and can intuitively express the four-stroke diesel engine.
The utility model provides a four-stroke diesel engine working principle teaching model, which comprises a machine body, a cylinder cover, a piston, a cylinder, a connecting rod, a crankshaft and a crank; the machine body is of a frame structure; the crank shaft is arranged in the middle of the machine body, and one end of the crank shaft is connected with the crank handle; the air cylinder is in a shape of a major arc cylinder and is fixed at the upper part of the machine body; the piston is arranged in the cylinder, and the bottom end of the piston is hinged with one end of the connecting rod; the other end of the connecting rod is rotatably connected with a crank part of the crankshaft; the cylinder head shape corresponds with the cylinder, and the cylinder head cover is established on the top of cylinder, and the cylinder head is equipped with inlet channel, exhaust passage and oil spout passageway, and inlet channel, exhaust passage and oil spout passageway make cylinder and outside intercommunication, and inlet channel, exhaust passage and oil spout passageway expose in the outside.
As a further optimization of the utility model, the machine body comprises two U-shaped plates, and the two U-shaped plates are laterally opposite to form a frame body structure.
As further optimization of the utility model, the air inlet channel, the exhaust channel and the oil injection channel are all provided with LED lamp strips; the LED lamp strip lamp also comprises a lamp strip controller, and the lamp strip controller controls the on and off of the LED lamp strip.
As a further optimization of the utility model, the utility model also comprises a cam, a travel switch and an indicator light; the cam is arranged at the other end of the crankshaft; the travel switches are four, are respectively arranged on the periphery of the cam in a circumferential array and interact with the cam; the pilot lamp is located on the organism, and the pilot lamp has four, and four pilot lamps correspond with four travel switch respectively.
As a further refinement of the utility model, the indicator lights are respectively green, yellow, blue and red.
As a further optimization of the present utility model, the intake passage, the exhaust passage, and the fuel injection passage are exposed to the vertical surface of the cylinder head.
The teaching model of the working principle of the four-stroke diesel engine can more intuitively express the working process of the four-stroke diesel engine, and the LED belt machine and the indicator lamp arranged in the teaching model can clearly express each stage of four strokes, thereby being convenient for students to learn.
Drawings
FIG. 1 is a schematic diagram of the structure of the present embodiment;
the engine comprises an engine body 1, a cylinder cover 2, an air inlet channel 2a, an exhaust channel 2b, an oil injection channel 3c, a vertical surface 3d, a piston 3, a cylinder 4, a connecting rod 5, a crankshaft 6, a crank part 6a, a crank handle 7, a cam 8 and a travel switch 9.
Detailed Description
As shown in fig. 1, the present embodiment includes a body 1, a cylinder head 2, a piston 3, a cylinder 4, a connecting rod 5, a crankshaft 6, and a crank 7.
The machine body 1 in this embodiment is a frame structure, specifically, includes two U-shaped plates, and the two U-shaped plates are erected with opposite openings to form the frame structure. The upper, lower, bottom, top and other azimuth expressions in the present application are all referred to in the specification and drawings.
The crank 6 is arranged in the middle of the machine body 1, the crank part 6a of the crank 6 is arranged in the frame body of the machine body 1, two ends of the crank 6 penetrate through the vertical parts of the two standing U-shaped plates, one end of the crank 6 is connected with the crank 7, and the crank 7 can be rotated by shaking the crank 7.
The cylinder 4 is the major arc cylindric, and the cross section of cylinder 4 is the major arc structure promptly, and the vertical upper portion at organism 1 of fixing of cylinder 4, and in the cylinder 4 was located to piston 3, because cylinder 4 is the major arc cylindric, the piston 3 was located in the cylinder 4 can directly perceivedly see the motion process of cylinder 4, can also prevent that piston 3 from droing from the breach of cylinder 4.
The bottom end of the piston 3 is hinged with one end of a connecting rod 5, and the other end of the connecting rod 5 is rotatably connected with a crank part 6a of a crankshaft 6. In this embodiment, the crank part 6a is composed of two flanges and a cross bar, two ends of the cross bar are respectively connected with the edges of the two flanges, and the other end of the connecting rod 5 is sleeved on the cross bar to realize rotatable connection.
The cylinder head 2 corresponds to the cylinder 4 in shape, namely, the cross section of the cylinder head 2 corresponds to the cross section of the cylinder 4, the cylinder head 2 is covered on the top end of the cylinder 4, the cylinder head 2 is provided with an air inlet channel 2a, an air outlet channel 2b and an oil injection channel 3c, the air inlet channel 2a, the air outlet channel 2b and the oil injection channel 3c enable the cylinder 4 to be communicated with the outside, the oil injection channel 3c vertically penetrates through the whole cylinder head 2, and the air inlet channel 2a and the air outlet channel 2b are symmetrically distributed on two sides of the oil injection channel 3 c. In the present embodiment, the intake passage 2a, the exhaust passage 2b, and the fuel injection passage 3c are exposed to the outside, specifically, the intake passage 2a, the exhaust passage 2b, and the fuel injection passage 3c are exposed to the vertical surface 3d of the cylinder head 2, which clearly sees the structures of the intake passage 2a, the exhaust passage 2b, and the fuel injection passage 3c, and also provides a structural basis for the installation of the LED lamp strip.
In this embodiment, the air inlet channel 2a, the air outlet channel 2b and the fuel injection channel 3c are all provided with LED lamp strips, and further include a lamp strip controller, and the lamp strip controller controls the on/off of the LED lamp strips. During the up-and-down movement of the piston 3, the controller controls the on-off of the LED lamp strip to express the air intake process of the air intake passage 2a, the air exhaust process of the air exhaust passage 2b, and the oil injection process of the oil injection passage 3 c.
Preferably, a cam 8, a travel switch 9 and an indicator light are also included. The cam 8 is arranged at the other end of the crankshaft 6, four travel switches 9 are arranged on the machine body 1 near the cam 8, the four travel switches 9 are respectively arranged around the cam 8 in a circumferential array and interact with the cam 8, namely, the outer convex part of the cam 8 sequentially touches the four travel switches 9 in the rotation process of the cam 8. The pilot lamps are arranged on the machine body 1, four pilot lamps are arranged, the four pilot lamps respectively correspond to the four travel switches 9, and the four pilot lamps are sequentially lightened in the process that the cam 8 rotates to touch the four travel switches 9.
As a further refinement of the utility model, the indicator lights are respectively green, yellow, blue and red, and the vicinity of each indicator light is marked with a logo for the intake stroke, compression stroke, power stroke and exhaust stroke, respectively.
When the piston 3 is at the highest point, the outer convex part of the cam 8 touches the first travel switch 9, and the intake stroke indicator light is on to indicate that the intake stroke stage starts to be entered; in the process that the piston 3 moves from the highest point to the lowest point, the outer protruding part of the cam 8 passes through the second travel switch 9, when the piston 3 moves to the lowest point, the outer protruding part of the cam 8 touches the third travel switch 9, and the compression stroke indicator light is on to indicate that the compression stroke stage starts to be entered; the piston 3 moves from the lowest point to the highest point, the outer protruding part of the cam 8 passes through the fourth travel switch 9 and the first travel switch 9, and then the cam 8 is in protruding contact with the second travel switch 9 in the process of continuously moving from the highest point to the lowest point, and the power stroke indicator light is on, so that the power stroke indicator light is in a power stroke stage at the moment; and then, in the process that the piston 3 reaches the bottommost point and moves to the highest point, the cam 8 is outwards protruded to pass through the third travel switch 9 to touch the fourth travel switch 9, and the exhaust stroke indicator lamp is on, so that the exhaust stroke indicator lamp is in an exhaust stroke stage at the moment, and the cycle is repeated.
Of course, the indicator light can work together with the LED lamp to more clearly show the gas flow condition of each stage.
Finally, it should be noted that the above embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the scope of the present utility model, and although the present utility model has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made to the technical solution of the present utility model without departing from the spirit and scope of the technical solution of the present utility model.
Claims (5)
1. A teaching model of the working principle of a four-stroke diesel engine is characterized in that: comprises a machine body, a cylinder cover, a piston, a cylinder, a connecting rod, a crankshaft and a crank handle;
the machine body is of a frame structure; the crank shaft is arranged in the middle of the machine body, and one end of the crank shaft is connected with the crank handle; the air cylinder is in a shape of a major arc cylinder and is fixed at the upper part of the machine body; the piston is arranged in the cylinder, and the bottom end of the piston is hinged with one end of the connecting rod; the other end of the connecting rod is rotatably connected with a crank part of the crankshaft; the cylinder cover is arranged at the top end of the cylinder, and is provided with an air inlet channel, an exhaust channel and an oil injection channel which are communicated with the outside of the cylinder;
the device also comprises a cam, a travel switch and an indicator lamp; the cam is arranged at the other end of the crankshaft; the travel switches are four, are respectively arranged on the periphery of the cam in a circumferential array and interact with the cam; the pilot lamp is located on the organism, and the pilot lamp has four, and four pilot lamps correspond with four travel switch respectively.
2. The teaching model for the working principle of the four-stroke diesel engine according to claim 1, wherein the machine body comprises two U-shaped plates, and the two U-shaped plates are laterally opposite to form a frame body structure.
3. The teaching model of the working principle of the four-stroke diesel engine according to claim 1, wherein the air inlet channel, the exhaust channel and the oil injection channel are provided with LED lamp strips; the LED lamp strip lamp also comprises a lamp strip controller, and the lamp strip controller controls the on and off of the LED lamp strip.
4. The teaching model of the operating principle of a four-stroke diesel engine according to claim 1, wherein the indicator lamps are respectively green, yellow, blue and red.
5. The teaching of the operating principle of a four-stroke diesel engine according to claim 1, wherein the intake passage, the exhaust passage and the fuel injection passage are exposed on the vertical surface of the cylinder head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321549824.5U CN220420124U (en) | 2023-06-17 | 2023-06-17 | Teaching model for working principle of four-stroke diesel engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321549824.5U CN220420124U (en) | 2023-06-17 | 2023-06-17 | Teaching model for working principle of four-stroke diesel engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220420124U true CN220420124U (en) | 2024-01-30 |
Family
ID=89659610
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321549824.5U Active CN220420124U (en) | 2023-06-17 | 2023-06-17 | Teaching model for working principle of four-stroke diesel engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220420124U (en) |
-
2023
- 2023-06-17 CN CN202321549824.5U patent/CN220420124U/en active Active
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