Oil-injection-resistant labyrinth structure of engine

Abstract

The utility model discloses an anti-oil-injection maze structure of an engine, which comprises a left crankcase and a right crankcase which are connected with each other, a right crankcase air inlet is arranged outside the right crankcase, a right crankcase air outlet and a right crankcase maze are arranged inside the right crankcase, the right crankcase air inlet is communicated with the right crankcase air outlet, and the right crankcase air inlet is communicated with the right crankcase air outlet. The left crankcase is internally provided with a left crankcase air inlet, a left crankcase labyrinth and a left crankcase air outlet pipe, the left crankcase labyrinth is divided into a rotary labyrinth and an exhaust labyrinth which are mutually independent and not communicated, the left crankcase air inlet is communicated with the rotary labyrinth, and the exhaust labyrinth is communicated with the left crankcase air outlet pipe. The left box air outlet pipe is communicated with the exhaust maze, the right box air outlet is connected with the left box air inlet, the rotary maze is connected with the right box maze, and the right box maze is connected with the exhaust maze. According to the utility model, the oil gas outlet path can be increased, and the sprayed engine oil is greatly reduced.

Description

Technical Field

[0001] This utility model relates to the field of crankcase technology, specifically an engine anti-injection labyrinth structure. Background Technology

[0002] During engine operation, the oil-gas mixture generated in the crankcase needs to be separated into gas and liquid phases through a labyrinth structure to reduce oil spray loss and meet environmental protection requirements. Traditional engines have short labyrinth structures, where oil and gas enter from the intake port and exit directly through the exhaust pipe. This short path results in limited separation efficiency, incomplete oil separation, and severe oil spraying, especially at high speeds. The oil particles carried by the oil-gas mixture are difficult to settle, increasing oil consumption and potentially polluting external engine components and the environment. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide an engine anti-injection labyrinth structure that increases the path for oil and gas to exit, thereby significantly reducing the amount of injected oil.

[0004] This utility model is achieved through the following technical solution: An engine anti-injection labyrinth structure includes a left crankcase and a right crankcase connected to each other. The right crankcase has a right crankcase intake port on its exterior and a right crankcase exhaust port and a right crankcase labyrinth inside its interior. The right crankcase intake port and the right crankcase exhaust port are connected, while the right crankcase exhaust port and the right crankcase labyrinth are independent and not connected. The left crankcase has a left crankcase intake port, a left crankcase labyrinth, and a left crankcase exhaust pipe inside its interior. The left crankcase labyrinth is divided into an independent and non-connected spiral labyrinth and an exhaust labyrinth. The left crankcase intake port and the spiral labyrinth are connected, the left crankcase exhaust pipe and the exhaust labyrinth are connected, and the right crankcase exhaust port is connected to the left crankcase intake port. The spiral labyrinth is connected to the right crankcase labyrinth, and the right crankcase labyrinth is connected to the exhaust labyrinth.

[0005] Furthermore, the spiral labyrinth and the exhaust labyrinth are separated by baffles.

[0006] Furthermore: side plates are respectively provided on the left and right sides of the right air inlet, and a top plate is provided on the top of the right air inlet.

[0007] Furthermore, the left box maze and the left box air inlet are separated by a partition, the height of which is lower than the height of the left box maze and the left box air inlet.

[0008] Furthermore, the right-side maze is divided into two interconnected mazes, Maze I and Maze II, by a baffle plate.

[0009] Compared with the prior art, the present invention has the following beneficial effects:

[0010] 1. This utility model divides the left gearbox labyrinth into an independent and interconnected spiral labyrinth and an exhaust labyrinth by a baffle, which can prevent oil and gas from directly exiting from the left gearbox exhaust pipe. This forces the oil and gas entering the spiral labyrinth from the right gearbox labyrinth to return to the right gearbox labyrinth and then to the exhaust labyrinth, and finally exit from the left gearbox exhaust pipe, thereby increasing the path for oil and gas to exit and greatly reducing the amount of oil sprayed out.

[0011] 2. The right-side labyrinth is divided into labyrinth I and labyrinth II by a baffle plate. When oil and gas enter the right-side labyrinth, they first enter labyrinth I, then flow to labyrinth II, and finally enter the exhaust labyrinth from labyrinth II, which can further increase the flow path of oil and gas. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model;

[0013] Figure 2 This is a schematic diagram of the right crankcase structure of this utility model. Figure 1 ;

[0014] Figure 3 This is a cross-sectional view of the right crankcase of this utility model;

[0015] Figure 4 This is a schematic diagram of the right crankcase structure of this utility model. Figure 2 ;

[0016] Figure 5 This is a schematic diagram of the right crankcase structure of this utility model. Figure 3 ;

[0017] Figure 6 This is a schematic diagram of the structure of the left crankcase of this utility model. Figure 1 ;

[0018] Figure 7 This is a schematic diagram of the structure of the left crankcase of this utility model. Figure 2 .

[0019] Explanation of reference numerals in the attached diagram: 1-Left crankcase, 2-Right crankcase, 3-Right crankcase inlet, 4-Right crankcase outlet, 5-Right crankcase labyrinth, 6-Left crankcase inlet, 7-Left crankcase labyrinth, 8-Left crankcase outlet pipe, 9-Rotating labyrinth, 10-Exhaust labyrinth, 11-Baffle, 12-Side plate, 13-Top plate, 14-Baffle, 15-Guide plate, 16-Maze I, 17-Maze II. Detailed Implementation

[0020] Figures 1 to 7This utility model provides a schematic diagram of an embodiment of an engine anti-injection labyrinth structure, including a left crankcase 1 and a right crankcase 2 connected to each other. The right crankcase 2 has a right crankcase inlet 3 on its exterior and a right crankcase outlet 4 and a right crankcase labyrinth 5 inside. The right crankcase inlet 3 and the right crankcase outlet 4 are connected, while the right crankcase outlet 4 and the right crankcase labyrinth 5 are independent and not connected. The left crankcase 1 has a left crankcase inlet 6, a left crankcase labyrinth 7, and a left crankcase outlet pipe 8 inside. The left crankcase labyrinth 7 is divided into a swirling labyrinth 9 and an exhaust labyrinth 10 that are independent and not connected. The left crankcase inlet 6 and the swirling labyrinth 9 are connected, the left crankcase outlet pipe 8 and the exhaust labyrinth 10 are connected, and the right crankcase outlet 4 is connected to the left crankcase inlet 6, the swirling labyrinth 9 is connected to the right crankcase labyrinth 5, and the right crankcase labyrinth 5 is connected to the exhaust labyrinth 10.

[0021] The spiral labyrinth 9 and the exhaust labyrinth 10 are separated by a baffle 11.

[0022] Side plates 12 are provided on the left and right sides of the right air intake 3, and a top plate 13 is provided on the top of the right air intake 3.

[0023] The left box maze 7 and the left box air inlet 6 are separated by a partition 14, the height of which is lower than the height of the left box maze 7 and the left box air inlet 6.

[0024] The right-side maze 5 is divided into two interconnected mazes, I16 and II17, by a flow deflector 15.

[0025] The right-side labyrinth 5 is divided into labyrinth I16 and labyrinth II17 by the baffle 15. When the oil and gas enter the right-side labyrinth 5, the oil and gas first enter labyrinth I16, then flow to labyrinth II17, and finally enter the exhaust labyrinth 10 from labyrinth II17, which can further increase the path of oil and gas flow.

[0026] In this invention, the left-side labyrinth 7 is divided by a baffle 11 into two independently connected mazes: a spiral labyrinth 9 and an exhaust labyrinth 10. This prevents oil and gas from directly exiting through the left-side exhaust pipe 8. Oil and gas enter the right-side exhaust port 4 from the right-side intake port 3, then enter the left-side intake port 6 from the right-side exhaust port 4, then enter the spiral labyrinth 9 from the left-side intake port 6, then enter the right-side labyrinth 5 from the spiral labyrinth 9, then proceed to the exhaust labyrinth 10 from the right-side labyrinth 5, and finally exit through the left-side exhaust pipe 8. Figure 1 As shown in the figure, the arrows indicate the direction of oil and gas flow.

[0027] This invention increases the oil and gas exit paths by requiring the oil and gas entering the right-side labyrinth 5 and then the spiral labyrinth 9 to return to the right-side labyrinth 5 and then to the exhaust labyrinth 10, finally exiting from the left-side exhaust pipe 8. This reduces the amount of oil sprayed out. Experiments show that the amount of oil sprayed through this labyrinth structure is only one-fifth of that of existing labyrinth structures. Road tests showed no oil spraying, effectively solving the problem of engine oil spraying. This labyrinth structure can be applied to the engine of the UYB model.

[0028] The above detailed description is a specific description of a feasible embodiment of the present utility model. This embodiment is not intended to limit the patent scope of the present utility model. All equivalent implementations or modifications that do not depart from the present utility model should be included in the patent scope of this case.

Claims

1. An engine anti-injection labyrinth structure, characterized in that: The system includes a left crankcase and a right crankcase that are interconnected. The right crankcase has a right crankcase intake port on its exterior and a right crankcase exhaust port and a right crankcase labyrinth on its interior. The right crankcase intake port and the right crankcase exhaust port are connected, while the right crankcase exhaust port and the right crankcase labyrinth are independent and not connected. The left crankcase has a left crankcase intake port, a left crankcase labyrinth, and a left crankcase exhaust pipe on its interior. The left crankcase labyrinth is divided into an independent and non-connected spiral labyrinth and an exhaust labyrinth. The left crankcase intake port and the spiral labyrinth are connected, the left crankcase exhaust pipe and the exhaust labyrinth are connected, the right crankcase exhaust port and the left crankcase intake port are connected, the spiral labyrinth and the right crankcase labyrinth are connected, and the right crankcase labyrinth and the exhaust labyrinth are connected.

2. The engine anti-injection labyrinth structure according to claim 1, characterized in that: The spiral labyrinth and the exhaust labyrinth are separated by baffles.

3. The engine anti-injection labyrinth structure according to claim 1, characterized in that: Side plates are provided on the left and right sides of the right air inlet, and a top plate is provided on the top of the right air inlet.

4. The engine anti-injection labyrinth structure according to claim 1, characterized in that: The left box maze and the left box air inlet are separated by a partition, the height of which is lower than the height of the left box maze and the left box air inlet.

5. The engine anti-injection labyrinth structure according to claim 1, characterized in that: The right-side maze is divided into two interconnected mazes, Maze I and Maze II, by a baffle plate.

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