Engine oil cooler guard

Abstract

This utility model relates to an engine oil cooler protection device, including a fan shroud installed on the engine. An oil cooler is installed on the side wall of the fan shroud. An air outlet is provided at the position corresponding to the oil cooler on the fan shroud. A bolt protection net is provided at the air outlet to prevent screws from falling through the air outlet and hitting the oil cooler. By setting the bolt protection net, this utility model can protect the oil cooler and effectively prevent bolts from accidentally falling into the fan shroud due to vibration during engine operation. These bolts would then be driven by the high-speed rotating fan and hit the oil cooler through the air outlet, causing the oil cooler to be deformed by the impact and resulting in oil leakage.

Description

Technical Field

[0001] This utility model belongs to the technical field of engine parts and components, and relates to an engine oil cooler protection device. Background Technology

[0002] General-purpose internal combustion engines used as prime movers in electric generators, lawnmowers, electric washers, and various other applications are typically air-cooled by engine cooling fans and supplied with cooling oil and maintained engine efficiency using oil coolers placed within the airflow path of the cooling fans. The oil cooler is typically attached to the airflow-facing surface of the internal combustion engine and has ducts running from the oil cooler to the engine, allowing oil to travel along a prescribed route from the engine to the oil cooler and back to the engine.

[0003] An engine assembly disclosed in CN104929756A includes an internal combustion engine, an oil cooler connected to the engine for receiving hot oil and discharging cooling oil, and an engine cover mounted to the internal combustion engine and having an opening therein for receiving the oil cooler. The integrated oil cooler is mounted to the engine fan cover so that the integrated oil cooler can be configured to not obstruct the flow of cooling air to the internal combustion engine.

[0004] However, in the above solution, when the engine is running, if the bolt accidentally falls into the air duct due to engine vibration, it is easily driven by the high-speed rotating fan to hit the oil cooler. The oil cooler is made of a multi-layer aluminum sheet structure welded together. Since aluminum is relatively soft, it is easily deformed by impact, which may lead to oil leakage. Utility Model Content

[0005] The purpose of this invention is to address the aforementioned problems in existing technologies by proposing an engine oil cooler protection device.

[0006] The purpose of this utility model can be achieved through the following technical solution: an engine oil cooler protection device, including a fan cover installed on the engine, an oil cooler installed on the side wall of the fan cover, an air outlet opened at the position corresponding to the oil cooler on the fan cover, and a bolt protection net provided at the air outlet to prevent screws from falling through the air outlet and hitting the oil cooler.

[0007] In the aforementioned engine oil cooler protection device, a mounting gasket is provided between the oil cooler and the fan shroud. The mounting gasket is provided with a first lug and a second lug. The second lug is used to fix the mounting gasket to the fan shroud by bolts. The bolt protective mesh is welded to the mounting gasket.

[0008] In the aforementioned engine oil cooler protection device, the first lug overlaps with the mounting lug on the oil cooler, and the oil cooler is fixed to the mounting gasket by bolts.

[0009] In the aforementioned engine oil cooler protection device, an arc-shaped air guide plate is provided on the inner side of the fan cover.

[0010] In the aforementioned engine oil cooler protection device, a baffle plate is also provided at the air outlet, and the baffle plate is located inside the fan cover.

[0011] In the aforementioned engine oil cooler protection device, the bolt protective mesh is welded to the air outlet.

[0012] Compared with the prior art, this utility model can protect the oil cooler by setting a bolt protection net, effectively preventing bolts from accidentally falling into the fan cover due to vibration during engine operation, and being driven by the high-speed rotating fan to hit the oil cooler through the air outlet, causing the oil cooler to be deformed by the impact and resulting in oil leakage. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of this utility model;

[0014] Figure 2 This is a schematic diagram of the bolt protection mesh structure of Embodiment 1 of this utility model;

[0015] Figure 3 This is a schematic diagram of the installation of the oil cooler and bolt protective net according to Embodiment 1 of this utility model;

[0016] Figure 4 This is a schematic diagram of the fan cover structure of Embodiment 1 of this utility model;

[0017] Figure 5 This is a structural schematic diagram of Embodiment 2 of this utility model.

[0018] In the diagram, 1. Engine; 2. Fan cover; 3. Oil cooler; 4. Air outlet; 5. Bolt protective net; 6. Mounting gasket; 7. First lug; 8. Second lug; 9. Curved air guide plate; 10. Wind deflector. Detailed Implementation

[0019] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments. Example 1

[0020] like Figures 1 to 4As shown, an engine oil cooler protection device includes a fan cover 2 installed on an engine 1, an oil cooler 3 installed on the side wall of the fan cover 2, an air outlet 4 opened at the position corresponding to the oil cooler 3 on the fan cover 2, a mounting gasket 6 provided between the oil cooler 3 and the fan cover 2, and a first lug 7 and a second lug 8 provided on the mounting gasket 6.

[0021] In this embodiment, the first lug 7 is disposed on the left and right sides of the mounting pad 6. After the first lug 7 overlaps with the mounting lug on the oil cooler 3, the oil cooler 3 is fixed to the mounting pad 6 by bolts.

[0022] In this embodiment, the second lug 8 is provided on the upper and lower sides of the mounting pad 6, and the second lug 8 is used to fix the mounting pad 6 to the fan cover 2 by bolts.

[0023] The air outlet 4 is equipped with a bolt protection mesh 5 to prevent screws from falling through the air outlet and hitting the oil cooler 3. In this embodiment, the bolt protection mesh 5 is welded to the mounting gasket 6. The engine 1 usually uses M6 hex bolts, so the mesh size of the bolt protection mesh 5 should be less than 6mm to prevent the M6 ​​hex bolts from passing through. Of course, the operator can also select bolt protection mesh 5 with different mesh sizes according to different types of hex bolts, as long as the mesh size of the bolt protection mesh 5 is smaller than the diameter of the hex bolt thread.

[0024] Furthermore, an arc-shaped air guide plate 9 is provided on the inner side of the fan cover 2. In this embodiment, the arc-shaped air guide plate 9 is provided on both sides of the bottom of the fan cover 2. The arc-shaped air guide plate 9 is arranged in an arc shape, which allows the cooling air to pass through the air outlet 4 along the arc surface and blow to the oil cooler, reducing wind resistance and thus improving the cooling effect on the oil cooler.

[0025] Furthermore, a baffle plate 10 is also provided at the air outlet 4. The baffle plate 10 is located inside the fan cover 2 and above the air outlet 4. It can block some of the cooling air that does not pass through the air outlet 4 and guide it to the air outlet 4, thereby further improving the cooling effect on the oil cooler 3.

[0026] This utility model, by setting a bolt protection net 5, can protect the oil cooler 3, effectively preventing the bolts of the engine 1 from accidentally falling into the fan cover 2 due to vibration during operation, and being driven by the high-speed rotating fan to hit the oil cooler 3 through the air outlet 4, causing the oil cooler 3 to be deformed by the impact and resulting in oil leakage. Example 2

[0027] like Figure 5 As shown, the working principle of this embodiment is basically the same as that of embodiment 1. The difference is that the bolt protective net 5 is welded to the air outlet 4.

[0028] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. An engine oil cooler protection device, comprising a fan shroud (2) mounted on an engine (1), wherein an oil cooler (3) is mounted on the side wall of the fan shroud (2), characterized in that, The fan cover (2) is provided with an air outlet (4) at the position corresponding to the oil cooler (3). A bolt protection net (5) is provided at the air outlet (4) to prevent screws from falling through the air outlet and hitting the oil cooler (3).

2. The engine oil cooler protection device according to claim 1, characterized in that: An installation gasket (6) is provided between the oil cooler (3) and the fan cover (2). The installation gasket (6) is provided with a first lug (7) and a second lug (8). The second lug (8) is used to fix the installation gasket (6) to the fan cover (2) by bolts. The bolt guard (5) is welded to the installation gasket (6).

3. The engine oil cooler protection device according to claim 2, characterized in that: After the first lug (7) overlaps with the mounting lug on the oil cooler (3), the oil cooler (3) is fixed to the mounting gasket (6) by bolts.

4. The engine oil cooler protection device according to claim 1, characterized in that: An arc-shaped air guide plate (9) is provided on the inner side of the fan cover (2).

5. The engine oil cooler protection device according to claim 1, characterized in that: A baffle plate (10) is also provided at the air outlet (4), and the baffle plate (10) is located inside the fan cover (2).

6. The engine oil cooler protection device according to claim 1, characterized in that: The bolt protective net (5) is welded onto the air outlet (4).

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