Double oil suction port oil pump bottom shell, oil pump and engine

Abstract

A double oil suction port oil pump bottom shell is used for the bottom shell of the oil pump bottom of an engine, the oil suction ports of the shell bottom are provided as at least two, the oil suction ports are communicated with the oil suction pipe and the shell bottom oil sediment tank; the application is applied to the oil pump and the corresponding engine, one is to add an oil suction port, and the channel of the oil suction cavity of the original oil suction port is independent, the cross section of the two oil suction ports is larger than that of the original one; two is to expand the volume of the oil suction cavity, and expand outward, so as to improve the oil suction efficiency.

Description

Technical Field

[0001] This invention relates to the field of engine oil pump technology, specifically to an oil pump housing with dual oil inlets, an oil pump, and an engine. Background Technology

[0002] When the engine is running, many transmission metal parts move at high speeds with very small gaps. If these surfaces are not lubricated, they will experience intense friction. The oil pump continuously delivers a sufficient quantity of pure oil at the appropriate temperature to all the friction surfaces of the transmission parts during engine operation, forming an oil film between the friction surfaces to achieve fluid friction. This reduces frictional resistance, lowers power consumption, and reduces wear on parts, thereby improving the reliability and durability of the engine.

[0003] The engine oil pump is a type of hydraulic pump, which can be divided into gear oil pumps, rotor oil pumps and vane oil pumps according to different structures.

[0004] A vane pump mainly consists of a stator, rotor, vanes, and a metal housing with an oil inlet and an oil outlet. Oil pumps are generally designed with an oil inlet and an oil outlet. To ensure the required oil injection volume and pressure, the design of the oil inlet and the oil outlet needs to be based on performance simulation requirements. To ensure performance and economy, the flow velocity at the oil inlet is generally 1-3 m / s, and the flow velocity at the oil outlet is generally 2-6 m / s.

[0005] The design of oil pumps is greatly affected by the boundaries. The space inside the oil pan is limited by parts such as camshaft and balance shaft, making the functional structure layout of oil pumps quite difficult. Generally, the design of oil pumps has a safety distance of three millimeters from surrounding parts, and a safety distance of five millimeters from rotating camshaft parts. The design space is very narrow, and adding or installing parts is restricted and cannot be realized.

[0006] The cooling and lubrication performance of an oil pump is closely related to the flow rate at the oil inlet and outlet, which is affected by the cross-sectional area of ​​the oil inlet. Existing oil inlets are limited by design space, and the current cross-sectional area of ​​the oil inlet has improved the cooling and lubrication performance of the oil pump. As the engine power requirements increase, it is impossible to increase the cross-sectional area of ​​the oil pump's oil inlet to improve the oil pump efficiency and power.

[0007] With the current requirements for engine miniaturization and compactness, improving the cooling and lubrication performance of existing oil pumps inevitably requires increasing the flow rate at the oil suction port, for which there is a lack of effective technical measures. Summary of the Invention

[0008] In view of this, and in view of the shortcomings of the prior art, the purpose of the present invention is to provide an oil pump housing with dual oil inlets and an oil pump.

[0009] This application aims to address one of the problems in the background art.

[0010] The technical solution adopted in this invention is as follows: In order to achieve the above-mentioned objectives and other related objectives, this invention provides a bottom housing of an oil pump with dual oil suction ports, which is used as the bottom housing of the oil pump on the engine. The bottom of the housing has at least two oil suction ports, which are connected to the oil suction pipe and the sedimentation tank at the bottom of the housing.

[0011] Preferably, the oil suction port is connected to the oil pool at the bottom of the shell and the oil suction pipe interface through an independent oil suction chamber.

[0012] Preferably, the oil suction chamber is configured to expand outwards.

[0013] Preferably, the oil suction chamber is designed to protrude outward from the bottom shell.

[0014] Preferably, the oil suction port is connected to the oil suction pipe and the sedimentation oil tank at the bottom of the shell.

[0015] Preferably, the cross-sectional area of ​​the oil suction port is not less than half the cross-sectional area of ​​the oil suction pipe.

[0016] Preferably, the partition plate between the two oil suction ports is provided with reinforcing ribs.

[0017] An oil pump with dual suction ports, using the aforementioned oil pump base housing with dual suction ports.

[0018] An engine with a dual-suction oil pump, wherein the above-mentioned dual-suction oil pump is used.

[0019] The technical solution provided in this application also has the following technical features:

[0020] The present invention has the following beneficial effects:

[0021] 1. This application utilizes the original oil inlet on the bottom housing of the oil pump to expand the oil suction chamber, increase the oil suction area, and improve the oil flow channel, thereby improving the oil suction efficiency of the oil pump.

[0022] 2. This application utilizes the original oil suction port on the bottom housing of the oil pump to expand the oil suction cross-sectional area, increase the oil suction volume, and meet the oil output performance requirements of the oil pump.

[0023] 3. The improvements are mainly achieved through two aspects: First, an additional oil suction port is added, with its channel independent from the original oil suction port. The cross-section of the two oil suction ports is larger than that of the original single oil suction port. Second, the volume of the oil suction chamber is expanded outward, thereby improving the oil suction efficiency. Attached Figure Description

[0024] Figure 1 This is a front view of the bottom housing of an oil pump with dual oil inlets according to the present invention;

[0025] Figure 2 This is a rear view of the bottom housing of an oil pump with dual oil inlets according to the present invention;

[0026] Figure 3 This is a left view of the bottom housing of an oil pump with dual oil inlets according to the present invention;

[0027] Figure 4 This is a cross-sectional view (AA) of the bottom housing of an oil pump with dual suction ports according to the present invention.

[0028] Figure 5 This is a BB cross-sectional view of the bottom housing of an oil pump with dual oil inlets according to the present invention;

[0029] Figure 6 This is a CC cross-sectional view of the bottom housing of a dual-suction oil pump according to the present invention.

[0030] Figure 7 This is a DD cross-sectional view of the bottom housing of a dual-suction oil pump according to the present invention;

[0031] Figure 8 This is an EE cross-sectional view of the bottom housing of an oil pump with dual suction ports according to the present invention;

[0032] Figure 9 This is a perspective view of the bottom housing of an oil pump with dual oil inlets according to the present invention;

[0033] Figure 10 This is a perspective view of the bottom housing of an oil pump with dual oil inlets according to the present invention;

[0034] Figure 11 The oil intake volume of the dual-suction oil pump under simulated idle speed condition is shown in the present invention.

[0035] Figure 12 A perspective view of the base housing of a conventional dual-suction oil pump;

[0036] Figure 13 A perspective view of the base housing of a conventional dual-suction oil pump;

[0037] Figure 14 A perspective view of the base of an existing oil pump;

[0038] Figure 15 A perspective view of the base of an existing oil pump;

[0039] Figure 16 A perspective view of the base of an existing oil pump;

[0040] In the picture:

[0041] 1. Bottom shell

[0042] 2. Oil suction port I

[0043] 3. Oil suction port II

[0044] 11. Divider

[0045] 12. Reinforcing ribs

[0046] 20. Original bottom shell

[0047] 21. Original oil suction port; Detailed Implementation

[0048] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings. These embodiments are for illustrative purposes only and are not intended to limit the scope of the invention.

[0049] In the description of this invention, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0050] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0051] Furthermore, in the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0052] like Figure 1-13 A dual-suction oil pump base housing is used as the base housing 1 at the bottom of the oil pump on an engine. The bottom of the housing is provided with suction port I2 and suction port II3, which are connected to the suction pipe and the sedimentation tank at the bottom of the housing.

[0053] The implementation of this application has the following characteristics: the engine oil pump improves oil suction efficiency by adding an oil suction port. Adding an oil suction port increases the oil suction channel of the oil pump, thereby improving oil suction efficiency and ensuring normal engine lubrication. Especially under high-speed and high-load conditions, the engine needs more oil for lubrication, and adding an oil suction port can meet the engine's oil demand.

[0054] Balancing oil pressure distribution: Adding an oil suction port can balance the oil pressure distribution inside the engine, avoiding excessively high or low oil pressure and ensuring the normal operation of the engine lubrication system; especially under high-speed and high-load conditions, the oil pump needs to withstand a greater workload, and adding an oil suction port can reduce the load on the oil pump and extend its service life.

[0055] Extending the service life of engine oil: Adding an oil suction port can prevent engine oil from accumulating at the bottom of the oil sump, thereby reducing engine oil contamination and extending the service life of engine oil;

[0056] Reduce noise: Adding an oil suction port can reduce air backflow and oil impact noise during oil return, thereby reducing the noise of the oil pump.

[0057] Specifically, oil suction port I2 and oil suction port II3 are connected to the oil sump at the bottom of the shell and the oil suction pipe interface through independent oil suction chambers. This structure has the following advantages:

[0058] Increased oil suction efficiency: The independent suction chamber allows the oil pump to draw oil more effectively, thus improving suction efficiency. Because the suction chamber is connected to the oil sump at the bottom of the housing and the suction pipe interface, oil flows more smoothly into the suction chamber, avoiding oil backflow or insufficient suction. Reduced oil contamination: The independent suction chamber draws oil directly from the bottom oil sump, avoiding the intake of sediment and impurities, thus reducing oil contamination and extending oil lifespan. Increased oil pump lifespan: The independent suction chamber reduces the workload of the oil pump, thus extending its lifespan, as it prevents oil backflow and insufficient suction. Reduced noise: The independent suction chamber eliminates air backflow and oil impact noise during oil pump operation, thus reducing pump noise.

[0059] Specifically, the outward expansion of the oil suction chamber has the following advantages:

[0060] Increasing the volume of the oil suction chamber improves oil suction efficiency: A larger oil suction chamber allows the oil pump to draw in more oil per unit time, thus improving suction efficiency and ensuring proper engine lubrication. It also reduces oil pump noise: An outward expansion of the oil suction chamber reduces pump noise because the oil inside buffers pump vibration and oil shock, resulting in smoother pump operation. Furthermore, it extends oil pump lifespan: An outward expansion of the oil suction chamber reduces the workload on the oil pump, thus reducing wear and damage and extending its lifespan. Finally, it improves oil pressure stability: An outward expansion of the oil suction chamber increases the cross-sectional area of ​​the oil pump's outlet, reducing the oil pump's output speed and improving oil pressure stability, resulting in more stable engine lubrication.

[0061] Specifically, the oil suction chamber protrudes outward from the bottom shell 1. This protrusion effectively avoids other parts of the bottom shell while improving the oil suction port and the oil suction chamber.

[0062] Specifically, oil suction ports I2 and II3 are connected to the oil suction pipe and the sedimentation tank at the bottom of the shell, improving oil suction efficiency and ensuring full contact between the oil suction ports and the oil in the bottom shell. This full contact allows the oil suction ports to more effectively draw oil from the bottom shell. This is because when the oil suction ports and the oil in the bottom shell are in full contact, the distribution of the oil is more uniform, and the oil suction ports can come into contact with more oil, thus drawing in more oil. In addition, full contact also helps the oil mix and stabilize, making the oil in the bottom shell more uniform and less prone to oil stratification, thereby ensuring the quality and taste of the oil.

[0063] Specifically, the combined cross-sectional area of ​​oil suction port I2 and oil suction port II3 should not be less than half the cross-sectional area of ​​the oil suction pipe to improve the oil pump's suction efficiency. A larger suction port cross-section allows the oil pump to draw in more oil, thus improving suction efficiency and ensuring proper engine lubrication and cooling. It also reduces oil pump noise. When oil enters the oil pump through the suction port, a smaller port cross-section leads to faster oil flow, generating significant noise. A larger port cross-section reduces oil flow, thus reducing noise. Furthermore, it increases oil stability. A smaller suction port cross-section causes excessively fast oil flow, leading to oil foaming and affecting lubrication. A larger port cross-section reduces flow rate and increases stability. Finally, it extends the oil pump's lifespan. A smaller suction port cross-section increases the pump's load, shortening its lifespan. A larger port cross-section reduces the load and extends its lifespan.

[0064] Specifically, a reinforcing rib 12 is provided on the partition plate 11 between oil suction port I2 and oil suction port II3. The reinforcing rib 12 does not interfere with oil suction port I2 and oil suction port II3, and can be set independently.

[0065] A dual-suction oil pump, using the aforementioned dual-suction oil pump housing, exhibits excellent oil suction and high-efficiency oil injection circulation.

[0066] An engine with a dual-suction oil pump, as described above, can increase engine power, and the oil pump can meet a wide power range.

[0067] In general: such as Figure 1-13 For the bottom casing and oil pump of this application, Figure 14 and 15 The design showcases the overall oil pump, which includes an aluminum alloy housing and a plastic suction pipe with a sealing ring. The cross-sectional view on the right shows the suction pipe inserted into the metal housing. When the oil pump is running, the oil in the oil pan enters the suction chamber directly through the suction pipe and is then discharged through the discharge chamber. Figure 16 The dotted circle shows the initial design with only one oil suction channel. The aluminum alloy metal shell had only one oil suction chamber with a small cross-sectional area, which could not meet the performance requirements of the oil pump design.

[0068] like Figure 9 The oil suction chamber has been enlarged, and an additional oil suction channel has been opened, for a total of two oil suction channels; Figure 10 The two oil suction ports of the oil suction chamber are shown from the back. Figure 11 To simulate the oil intake volume of the two oil inlets under idling conditions, and based on the actual test results of the soft mold, the overall oil pump discharge volume and discharge pressure meet the customer's engine requirements.

[0069] Figure 12 , Figure 13 It is the original bottom shell structure of existing technology.

[0070] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present invention, and these improvements and substitutions should also be considered within the scope of protection of the present invention.

Claims

1. A dual-suction oil pump base housing, used as the base housing (1) at the bottom of the oil pump on an engine, wherein oil enters the oil pump through the suction port, characterized in that, The bottom shell (1) has two oil suction ports (2,3), including oil suction port I and oil suction port II. Oil suction port I and oil suction port II are connected to the bottom oil pool and oil suction pipe interface of the bottom shell (1) through independent oil suction cavities, and the oil suction cavities are set to expand outward. The oil suction cavities are set to protrude outward from the bottom shell (1).

2. The oil pump base housing with dual oil inlets according to claim 1, characterized in that, The cross-sectional area of ​​the oil suction port (2,3) is not less than half the cross-sectional area of ​​the oil suction pipe.

3. The oil pump base housing with dual oil inlets according to claim 1, characterized in that, Reinforcing ribs are provided on the partition plate between oil suction port I and oil suction port II.

4. An oil pump with dual suction ports, characterized in that, An oil pump base housing with dual oil inlets as described in any one of claims 1-3.

5. An engine with a dual-suction oil pump, characterized in that, An oil pump with dual suction ports as described in claim 4.

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