Engine oil cooling system and water pump unit

Abstract

This utility model provides an engine lubricating oil cooling device and a water pump unit, including an engine and a cooling fan mounted on the engine. The cooling fan is surrounded by an air guide shroud, and a lubricating oil cooler is installed on the air guide shroud. The key feature is that an air outlet is provided on the air guide shroud, directly facing the lubricating oil cooler. The oil outlet pipe and oil inlet pipe of the lubricating oil cooler are located on the same side of the lubricating oil cooler and at its upper and lower ends, respectively. This utility model uses an oil pump to forcefully pump out engine lubricating oil, which flows into the cooler. A strong airflow directly blows into the cooler, and the cooled engine lubricating oil then flows back into the engine compartment. This process is repeated to achieve the purpose of forcibly reducing engine lubricating oil levels. This increases engine output power, extends the engine lubricating oil change cycle, and saves on the use and maintenance costs of the water pump unit.

Description

Technical Field

[0001] This utility model relates to an engine lubricating oil cooling device and a water pump unit. Background Technology

[0002] The existing water pump unit's engine lubricating oil cooling principle relies on the ambient temperature of the water pump's working location, natural wind, and the wind generated by the engine impeller to carry away the heat from the engine housing and engine end cover surfaces, thereby reducing the lubricating oil temperature.

[0003] The drawback of existing technology is that if the ambient temperature is high and the natural wind speed is zero, the engine lubricating oil temperature will be relatively high. Relying solely on the airflow generated by the engine impeller to remove heat is insufficient to effectively lower the lubricating oil temperature. Consequently, engine output power will decrease, and the engine lubricating oil replacement cycle will be shortened.

[0004] A subsequent patent document with patent number 201420045722.4 disclosed a structure for cooling lubricating oil by setting a fan in the engine; however, there is a need for further optimization of this structure. Utility Model Content

[0005] The purpose of this invention is to provide an engine lubricating oil cooling device that effectively reduces the temperature of engine lubricating oil, has a simple layout, and extends the engine lubricating oil replacement cycle. This invention provides an engine lubricating oil cooling device including an engine and a cooling fan mounted on the engine. The cooling fan is surrounded by a guide shroud, and a lubricating oil cooler is mounted on the guide shroud. An air outlet is provided on the guide shroud, directly facing the lubricating oil cooler. The oil outlet and inlet pipes of the lubricating oil cooler are located on the same side of the lubricating oil cooler, at the upper and lower ends of the lubricating oil cooling system, respectively. This structure uses a fan to cool the lubricating oil cooler. The lubricating oil in the cooler enters from the lower end and is cooled by the cooling fins. After reaching the upper end, the cooled lubricating oil flows into the engine crankcase to lubricate relevant engine components. This ensures that the engine lubricating oil operating temperature does not exceed 120°C, improving engine output power and enhancing the lubricating performance of the lubricating oil.

[0006] Furthermore, the air outlet is provided with a flange facing the lubricating oil cooler. By providing the flange, the cooling air can be effectively guided towards the lubricating oil cooler, allowing the cooling air to completely cover the lubricating oil cooler and improving cooling efficiency.

[0007] Furthermore, lugs are provided on both the left and right sides of the air guide shroud, and the lubricating oil cooler is mounted on the air guide shroud via these lugs. The lugs improve installation efficiency, simplify the structure, and reduce manufacturing costs.

[0008] Furthermore, a mounting hole is provided on the left side lug of the air guide shroud, and the lug is fixed to the side wall of the air guide shroud by welding. The structure is simple and easy to manufacture.

[0009] Furthermore, a support lug is provided on the right side of the air guide shroud and fixed along the inner wall of the shroud. This lug is arc-shaped and similar to the shape of the inner wall of the air guide shroud, and has two mounting holes. By setting a structure with a similar shape, it is possible to ensure that the lug is fully fitted and welded to the air guide shroud, thereby improving the installation strength. In addition, the lubricating oil cooler has three mounting lugs, making the installation of the lubricating oil cooler more reliable.

[0010] Furthermore, one mounting lug and two mounting ears are provided on the left and right sides of the lubricating oil cooler, corresponding to the lugs provided on the air guide shroud. Buffer sleeves are provided on both sides of the mounting ears. By providing three mounting ears, the installation reliability of the lubricating oil cooler is improved, and the vibration transmitted from the engine to the lubricating oil cooler is reduced, preventing the risk of the lubricating oil cooler loosening due to vibration during use.

[0011] Furthermore, the two mounting lugs are located between the oil outlet pipe and the oil inlet pipe. This structure allows for a greater distance between the oil inlet pipe and the oil outlet pipe, increasing the cooling time of the lubricating oil in the lubricating oil cooler and ensuring sufficient cooling of the lubricating oil.

[0012] This utility model also provides a water pump unit, including an engine, on which the aforementioned engine lubricating oil cooling device is installed. The engine lubricating oil cooler structure with this configuration can effectively reduce the operating temperature of the engine lubricating oil, improve the engine's service life, and extend the service life of the water pump unit. Beneficial effects:

[0013] This invention employs an oil pump to forcefully pump out engine lubricating oil, which flows into the cooler. A strong airflow directly blows through the cooler, and the cooled engine lubricating oil then flows back into the engine compartment. This process is repeated to forcibly reduce the engine lubricating oil level. This increases engine output power, extends the engine lubricating oil change interval, and saves on the operating and maintenance costs of the water pump unit. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of the water pump unit of this utility model;

[0015] Figure 2 This is a schematic diagram of the structure of the air guide cover of this utility model;

[0016] Figure 3 This is a front view of the lubricating oil cooler in this utility model.

[0017] Figure 4 for Figure 3A top-view structural diagram; Detailed Implementation

[0018] This utility model is as follows Figure 1 As shown, Figure 1 The middle part is a type of water pump unit, such as Figure 1-4 As shown, the system includes an engine 1 and a water pump 6. The engine has a crankshaft, with one end connected to the impeller of the water pump 6 and the other end equipped with a cooling fan. A shroud 4 is installed outside the cooling fan, and a lubricating oil cooler 2 is installed on the shroud. An oil pump is installed at the bottom of the engine crankcase, and a lubricating oil outlet is provided on the outer wall of the crankcase. An oil inlet pipe 3 is connected to the oil outlet, with one end connected to the oil outlet and the other end connected to the oil inlet section 22 at the lower end of the lubricating oil cooler. A lubricating oil cooler 2 is installed at the upper end of the lubricating oil cooler 2. An oil outlet section 21 is provided, and one end of the oil return pipe 5 is connected to the oil outlet section 21 of the lubricating oil cooler, while the other end is connected to the section pipe at the top of the crankcase. Lubricating oil flowing through the lubricating oil cooler to the bottom of the crankcase circulates in this manner for lubricating oil cooling. The lubricating oil cooler is mounted on the air guide shroud, and an air outlet 43 is provided on the air guide shroud, directly facing the lubricating oil cooler. The oil outlet and inlet pipes of the lubricating oil cooler are located on the same side of the lubricating oil cooler, at its upper and lower ends respectively. This structure allows the oil cooler to be cooled by a fan. The lubricating oil in the oil cooler enters the cooling fins from the lower end for cooling, and after reaching the upper end of the cooler, the cooled lubricating oil flows back into the engine crankcase to lubricate relevant engine components. This ensures that the engine lubricating oil operating temperature does not exceed 120℃, improving engine output power and enhancing the lubricating performance of the lubricating oil.

[0019] In this embodiment: as Figure 2 As shown, the air outlet 43 is provided with a flange facing the lubricating oil cooler 2. By providing the flange, the cooling air can be effectively guided towards the lubricating oil cooler, allowing the cooling air to completely cover the lubricating oil cooler and improving cooling efficiency.

[0020] In this embodiment: as Figure 2 As shown, lugs 42 and 41 are provided on the left and right sides of the air guide shroud, and the lubricating oil cooler 2 is mounted on the air guide shroud 4 via the lugs 42 and 41. By providing lugs, the installation efficiency is improved, the structure is simple, and the manufacturing cost is low.

[0021] In this embodiment: as Figure 2 As shown, a mounting hole is provided on the left side lug 42 of the air guide shroud 4, and the lug is fixed to the side wall of the air guide shroud by welding. The lug is L-shaped, with one end fixed to the side wall of the air guide shroud by welding, and the other end used to fix the lubricating oil cooler. The structure is simple and easy to manufacture.

[0022] In this embodiment: as Figure 2 As shown, a support lug 41 is provided on the right side of the air guide shroud and is fixed along the inner wall of the air guide shroud. This lug is arc-shaped and conforms to the shape of the inner wall of the air guide shroud; this conformity means that the arc shape of the lug fits snugly against the arc shape inside the air guide shroud. Two mounting holes are provided on this lug. By designing this conformally shaped lug, it is ensured that the lug is fully fitted and welded to the inner wall of the air guide shroud, improving installation strength. Furthermore, the lubricating oil cooler has three mounting lugs, making the installation of the lubricating oil cooler more stable and reliable.

[0023] In this embodiment: as Figure 3 , 4 As shown, one mounting lug 24 and two mounting lugs 23 are provided on the left and right sides of the lug cooler 2, corresponding to the lugs 42 and 41 on the air guide shroud. Buffer sleeves 25 are provided on both sides of the mounting lugs 24 and 23. By providing three mounting lugs, the installation reliability of the lug cooler is improved, and the vibration transmitted from the engine to the lug cooler is reduced, preventing the risk of the lug cooler loosening due to vibration during use.

[0024] In this embodiment: as Figure 3 As shown, the two mounting lugs 23 are located between the oil outlet section 21 and the oil inlet section 22. This structure allows for a larger distance between the oil inlet pipe and the oil outlet pipe, increasing the cooling time of the lubricating oil in the lubricating oil cooler and ensuring sufficient cooling of the lubricating oil.

[0025] This utility model also provides a water pump unit, including an engine 1, on which the aforementioned engine lubricating oil cooler 2 is installed. The engine lubricating oil cooler structure with this configuration can effectively reduce the operating temperature of the engine lubricating oil, improve the engine's service life, and extend the service life of the water pump unit.

[0026] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. An engine lubricating oil cooling device comprising an engine and a radiator fan mounted on the engine, said radiator fan being provided with a shroud on the outside, and a lubricating oil cooler being provided on said shroud, characterized in that: An air outlet is provided on the air guide cover, and the air outlet is directly opposite the lubricating oil cooler. The oil outlet pipe and oil inlet pipe of the lubricating oil cooler are located on the same side of the lubricating oil cooler and are respectively located at the upper and lower ends of the lubricating oil cooler.

2. The engine lubricating oil cooling device according to claim 1, characterized by: The air outlet is provided with a flange facing the lubricating oil cooler.

3. The engine lubricating oil cooling device according to claim 2, characterized by: Support ears are provided on the left and right sides of the air guide cover, and the lubricating oil cooler is mounted on the air guide cover through the support ears.

4. The engine lubricating oil cooling device according to claim 3, characterized by: A mounting hole is provided on the left side lug of the air guide cover, and the lug is fixed to the side wall of the air guide cover by welding.

5. The engine lubricating oil cooling device according to claim 4, characterized in that: The support lug provided on the right side of the air guide shroud is fixed along the inner wall of the air guide shroud, and the support lug is arc-shaped and similar to the shape of the inner wall of the air guide shroud, and two mounting holes are provided on the support lug.

6. The engine lubricating oil cooling device according to claim 5, characterized by: One mounting lug and two mounting ears are provided on the left and right sides of the lubricating oil cooler, corresponding to the lugs provided on the air guide cover, and buffer sleeves are provided on both sides of the mounting lugs.

7. An engine lubricating oil cooling device according to claim 6, characterised in that: The two mounting lugs are located between the oil outlet pipe and the oil inlet pipe.

8. A water pump unit, comprising an engine, characterized in that: The engine is equipped with an engine lubricating oil cooling device as described in any one of claims 1-7.

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