A cylinder head cover facilitating oil and gas separation

Abstract

This utility model relates to the field of cylinder head covers, and more specifically, to a cylinder head cover that facilitates oil-gas separation. The cylinder head cover includes a cylinder head cover shell and a cylindrical cavity disposed on the cylinder head cover shell. An outlet pipe is coaxially disposed at the end of the cylindrical cavity away from the cylinder head cover shell. A filter mechanism is installed within the cylindrical cavity, capable of filtering oil droplets from the oil-gas mixture. The filter mechanism includes a rotating ring that rotates at the port of the cylindrical cavity, an inner tube that rotates within the outlet pipe, and a conical tube fixed between the rotating ring and the inner tube, with a filter element disposed within the conical tube. This utility model improves the oil-gas separation effect.

Description

Technical Field

[0001] This utility model relates to the field of cylinder head covers, and more specifically to a cylinder head cover that facilitates oil-gas separation. Background Technology

[0002] An oil-gas separator separates the oil droplets carried in crankcase blow-by. The separated exhaust gas is then introduced into the combustion chamber for combustion through the crankcase ventilation pipe, while the separated oil droplets flow back into the crankcase, thus preventing problems such as excessive oil consumption and abnormal combustion.

[0003] Currently, oil mist is typically separated from fuel in the cylinder head cover using a labyrinth-structured oil-gas separator. The labyrinth structure is housed within the cylinder head cover and covered by a cover plate, with inlet and outlet ports at both ends of the oil-gas separator. However, the existing labyrinth-structured exhaust passages are very simple and have a short stroke, resulting in incomplete oil-gas separation. This is especially problematic for turbocharged engines, where enhanced oil-gas separation is necessary to prevent oil mist from entering the final exhaust gas and affecting turbocharging performance. Utility Model Content

[0004] This invention provides a cylinder head cover that facilitates oil-gas separation and improves the oil-gas separation effect.

[0005] The technical solution adopted by this utility model to solve the above problems is as follows:

[0006] A cylinder head cover for convenient oil-gas separation includes a cylinder head cover shell and a cylindrical cavity disposed on the cylinder head cover shell. The cylindrical cavity is coaxially provided with an exhaust pipe at the end away from the cylinder head cover shell. A filter mechanism is installed in the cylindrical cavity, which can filter out oil droplets in the oil-gas mixture.

[0007] The filtration mechanism includes a rotating ring that rotates at the port of the cylindrical cavity, an inner tube that rotates inside the air outlet pipe, a conical tube that is fixed between the rotating ring and the inner tube, and a filter element that is installed inside the conical tube.

[0008] The tapered tube has multiple elongated holes evenly running through it circumferentially.

[0009] The elongated hole on the tapered tube is provided along the axis of the tapered tube.

[0010] A miniature motor is installed on the cylinder cover shell to drive the rotating ring.

[0011] A lower partition net is installed at the lower end of the tapered tube.

[0012] An upper partition net is installed inside the inner tube.

[0013] A leakage hole is provided between the rotating ring and the tapered tube.

[0014] An oil outlet pipe is provided on the side of the cylindrical cavity.

[0015] The filter element is filter cotton. Attached Figure Description

[0016] Figure 1 A schematic diagram of the structure of a cylinder head cover designed to facilitate oil-gas separation;

[0017] Figure 2 A schematic diagram of the cylinder cover shell;

[0018] Figure 3 and Figure 4 This is a schematic diagram of the filtration mechanism;

[0019] Figure 5 This is a schematic diagram of the rotating ring, tapered tube, and inner tube.

[0020] In the picture:

[0021] 1. Cylinder cover shell; 2. Cylindrical cavity; 3. Exhaust pipe; 4. Rotating ring; 5. Micro motor; 6. Lower partition; 7. Conical tube; 8. Inner tube; 9. Upper partition. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] The following is combined Figure 1-5 A detailed explanation of the cylinder head cover that facilitates oil-gas separation:

[0024] A cylinder head cover for convenient oil-gas separation includes a cylinder head cover shell 1 and a cylindrical cavity 2 disposed on the cylinder head cover shell 1. The cylindrical cavity 2 is coaxially provided with an exhaust pipe 3 at the end away from the cylinder head cover shell 1. A filter mechanism is installed inside the cylindrical cavity 2, which can filter out oil droplets in the oil-gas mixture.

[0025] The filtration mechanism includes a rotating ring 4 that rotates at the port of the cylindrical cavity 2, an inner tube 8 that rotates inside the air outlet pipe 3, a conical tube 7 that is fixed between the rotating ring 4 and the inner tube 8, and a filter element that is provided inside the conical tube 7.

[0026] When in use, the oil-gas mixture enters the cylinder head cover and enters the cone tube 7 through the rotating ring 4. After being filtered by the filter element, the gas passes through the filter element and enters the inner tube 8, and is then introduced into the combustion chamber for combustion through the exhaust pipe 3. Meanwhile, the oil droplets are blocked in the filter element, thus completing the oil-gas separation.

[0027] Compared to the labyrinthine structure inside the cylinder head cover where the airflow direction constantly changes after the oil-gas mixture enters, the oil droplets in the oil-gas mixture will collide with the baffle and gather into larger oil droplets due to inertia, thereby achieving oil-gas separation, this application can greatly improve the separation effect by setting the filter element.

[0028] It should be noted that a sealing ring is provided between the outlet pipe 3 and the inner pipe 8 to prevent the oil-gas mixture entering the cylindrical cavity 2 from overflowing between the outlet pipe 3 and the inner pipe 8. This ensures that the gas entering the outlet pipe 3 must first be filtered by the filter element before entering the inner pipe 8, thus ensuring the separation effect. The rotating ring 4 and the cylindrical cavity 2 can be installed by fitting a bearing on the outside of the rotating ring 4 and installing the bearing sleeve inside the cylindrical cavity 2, or by directly contacting and rotating the rotating ring 4 and the cylindrical cavity 2.

[0029] The filter element is made of filter cotton. When the oil-gas mixture passes through the filter cotton, the filter cotton can filter oil droplets with a diameter between 0.5-1μm, leaving the oil droplets on the filter cotton, while the gas is discharged through the filter cotton.

[0030] Further:

[0031] The tapered tube 7 has multiple elongated holes evenly running through it circumferentially.

[0032] The elongated hole on the tapered tube 7 is arranged along the axis of the tapered tube 7.

[0033] A micro motor 5 is installed on the cylinder cover shell 1 to drive the rotating ring 4 to rotate inside the cylindrical cavity 2.

[0034] By activating the micro motor 5, the transmission wheel at the output end of the micro motor 5 meshes with the fixed gear ring on the rotating ring 4, forming a drive transmission for the rotating ring 4. This causes the rotating ring 4 to drive the cone tube 7 and the inner tube 8 to rotate, which in turn drives the filter element inside the cone tube 7 to rotate. The rotating filter element will generate centrifugal force, which will cause the filtered oil droplets to move away from the axis of the cone tube 7. Then, they will enter the cylindrical cavity 2 through the elongated hole on the cone tube 7 and fall onto the inner wall of the cylindrical cavity 2. As the oil droplets converge, they will automatically flow down to the rotating ring 4 under their own gravity. This ensures that too many oil droplets do not adhere to the filter element, thus ensuring the filtration effect of the filter element.

[0035] Among them, the elongated hole on the tapered tube 7 is set along the axis of the tapered tube 7, so that the oil droplets adhering to the outer wall of the tapered tube 7 can flow down along the elongated hole and also flow to the rotating ring 4.

[0036] It should be noted that both ends of the transmission wheel at the output end of the micro motor 5 are provided with limiting ridges, which are not shown in the figure. This allows for axial limiting of the toothed ring fixed on the rotating ring 4, preventing the toothed ring from moving axially. This achieves axial limiting of the rotating ring 4 and prevents the rotating ring 4 from falling out of the cylindrical cavity 2.

[0037] As one embodiment, a leakage hole is provided between the rotating ring 4 and the tapered tube 7, so that the oil droplets gathered at the rotating ring 4 flow out of the cylindrical cavity 2 through the leakage hole and are flung back into the cylinder cover shell 1 by the rotation of the rotating ring 4.

[0038] As a parallel embodiment of the above embodiments, an oil outlet pipe is provided on the side of the cylindrical cavity 2. The oil outlet pipe is not shown in the figure. As oil droplets gather at the rotating ring 4, they cannot be discharged, resulting in more and more oil in the cylindrical cavity 2, forming oil liquid. The oil liquid will flow out along the oil outlet pipe and be concentrated and guided back to the crankcase.

[0039] It should be noted that the micro motor 5 can be installed through the cylinder cover housing 1 while ensuring a sealed installation, or it can be installed directly inside the cylinder cover housing 1.

[0040] Further:

[0041] A lower partition net 6 is installed at the lower end of the tapered tube 7, and an upper partition net 9 is installed inside the inner tube 8;

[0042] While confining the filter cotton inside the cone tube 7, the oil and gas can pass through the mesh holes of the lower partition 6 and the upper partition 9, and the filtered gas can pass through the upper partition 9.

[0043] The lower partition 6 and the upper partition 9 can be connected to the rotating ring 4 or the screw hole on the inner tube 8 by screws to form a fixed installation.

[0044] Of course, the above description is not a limitation of this instruction manual, and this utility model is not limited to the examples mentioned above. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of this utility model are also within the protection scope of this utility model.

Claims

1. A cylinder head cover for convenient oil-gas separation, characterized in that: It includes a cylinder cover shell (1) and a cylindrical cavity (2) disposed on the cylinder cover shell (1). The cylindrical cavity (2) is coaxially provided with an exhaust pipe (3) at the end away from the cylinder cover shell (1). A filter mechanism is installed inside the cylindrical cavity (2) and the filter mechanism can filter out oil droplets in the oil and gas.

2. The cylinder head cover for convenient oil-gas separation according to claim 1, characterized in that: The filtration mechanism includes a rotating ring (4) that rotates at the port of the cylindrical cavity (2), an inner tube (8) that rotates inside the air outlet pipe (3), a conical tube (7) that is fixed between the rotating ring (4) and the inner tube (8), and a filter element that is provided inside the conical tube (7).

3. The cylinder head cover for convenient oil-gas separation according to claim 2, characterized in that: The tapered tube (7) has multiple elongated holes evenly running through it in the circumferential direction.

4. The cylinder head cover for convenient oil-gas separation according to claim 3, characterized in that: The elongated hole on the tapered tube (7) is arranged along the axis of the tapered tube (7).

5. A cylinder head cover for convenient oil-gas separation according to claim 3, characterized in that: A micro motor (5) is installed on the cylinder cover shell (1) for driving the rotating ring (4).

6. A cylinder head cover for convenient oil-gas separation according to claim 5, characterized in that: A lower partition net (6) is installed at the lower end of the tapered tube (7).

7. A cylinder head cover for convenient oil-gas separation according to claim 6, characterized in that: An upper partition net (9) is installed inside the inner tube (8).

8. A cylinder head cover for convenient oil-gas separation according to claim 5, characterized in that: A leakage hole is provided between the rotating ring (4) and the cone tube (7).

9. A cylinder head cover for convenient oil-gas separation according to claim 5, characterized in that: The cylindrical cavity (2) is provided with an oil outlet pipe on its side.

10. A cylinder head cover for convenient oil-gas separation according to claim 2, characterized in that: The filter element is filter cotton.

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