A continuously variable variable-displacement vane-type oil pump device

Abstract

The application discloses a stepless adjustment variable rotor engine oil pump device and relates to the technical field of engine oil pumps.The device comprises an engine oil pump cover and an engine oil pump body, the engine oil pump body is provided with an adjusting groove, the adjusting groove is located on the inner side of a feedback oil cavity, the engine oil pump body is provided with a high-pressure oil cavity and a low-pressure oil cavity, and the high-pressure oil cavity and the low-pressure oil cavity are located on the outer side of an outer rotor; a rotor assembly comprises an outer rotor and an inner rotor, and the outer rotor is located in the inner cavity of the engine oil pump body; a pressure regulating assembly is provided with a pressure regulating plate, the pressure regulating plate is provided with an adjusting piece, and the adjusting piece is located on the inner side of the adjusting groove and is in sliding fit.The application adjusts the performance of the engine oil pump, improves the sliding environment of the moving parts of the engine, supplies oil as required, improves the problem of energy saving and emission reduction, saves the power waste of the engine under high speed through the pressure regulating plate structure, and achieves the effect of oil saving.

Description

A stepless adjustable variable rotor oil pump device Technical Field

[0001] This invention relates to the technical field of variable displacement oil pumps, and more particularly to a continuously variable displacement oil pump device. Background Technology

[0002] Energy conservation and emission reduction are the development trends of modern engines. The engine's oil flow requirements vary under different speed conditions. Insufficient oil pump performance can lead to poor lubrication of moving parts and cause engine failure, while excessive oil pump performance can increase engine power loss and waste. Existing variable displacement oil pumps generally only achieve two-stage adjustment and lack a simple and effective stepless adjustment device. They cannot guarantee that the engine's fluid system has an optimal oil flow at any speed and temperature. The performance of the oil pump increases with the engine speed. When the oil pump performance is excessive, it cannot be paired with a pressure relief structure to reduce the pressure.

[0003] In summary, to achieve stepless adjustment of oil flow, a simple and efficient variable displacement oil pump needs to be designed. Therefore, we propose a steplessly adjustable variable displacement rotor oil pump device to solve the problems mentioned above. Summary of the Invention

[0004] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the invention.

[0005] In view of the problems existing in the above-mentioned continuously variable variable rotor oil pump device, the present invention is proposed.

[0006] Therefore, the purpose of this invention is to provide a continuously variable variable rotor oil pump device, which solves the problem mentioned in the background art that the engine melting system cannot guarantee an optimal oil flow rate at any speed and temperature. This results in the oil pump performance being too low, leading to poor lubrication of engine moving parts and causing engine failure, while the oil pump performance being too high, increasing engine power loss and waste.

[0007] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a continuously variable adjustable variable rotor oil pump device, comprising:

[0008] The oil pump cover and the oil pump body are provided. The oil pump body is provided with an adjustment groove located inside the feedback oil chamber. The oil pump body is provided with a high-pressure oil chamber and a low-pressure oil chamber located outside the outer rotor.

[0009] The rotor assembly includes an outer rotor and an inner rotor, wherein the outer rotor is located in the internal cavity of the oil pump body.

[0010] The pressure regulating assembly includes a pressure regulating plate and a pressure regulating plate adjustment piece. The adjustment piece is located inside the adjustment groove and is slidably engaged. The pressure regulating assembly includes a tension spring, a spring slider, and a pressure chamber spring.

[0011] As a preferred embodiment of the steplessly adjustable variable rotor oil pump device of the present invention, wherein: a compression spring platform is provided on the outside of the high-pressure oil chamber and the low-pressure oil chamber, and the compression spring platform is fixedly connected to the compression chamber spring.

[0012] In a preferred embodiment of the continuously variable variable rotor oil pump device of the present invention, the high-pressure oil chamber is connected to the outlet oil pipe, and a feedback oil passage is provided at the outlet oil pipe. The feedback oil passage connects the feedback oil chamber and the outlet oil pipe. An electromagnetic valve is provided inside the feedback oil passage, and the electromagnetic valve is electrically connected to the engine controller.

[0013] As a preferred embodiment of the steplessly adjustable variable rotor oil pump device of the present invention, the outer surface of the pressure regulating plate is evenly distributed with arc-shaped protrusions, and the arc-shaped protrusions cooperate with the inner cavity of the oil pump body to realize the rotation of the pressure regulating plate.

[0014] As a preferred embodiment of the steplessly adjustable variable rotor oil pump device of the present invention, the pressure regulating plate is provided with a slider fixing head, and the pressure regulating component is provided with two spring sliders, one of which is fixed outside the slider fixing head.

[0015] In a preferred embodiment of the continuously variable variable rotor oil pump device of the present invention, the other spring slider is fixed at the slider slot of the oil pump body, and the tension spring is used to connect the two spring sliders.

[0016] As a preferred embodiment of the stepless adjustable variable rotor oil pump device of the present invention, the pressure regulating plate and the oil pump body are provided with a limiting mechanism, which is used to limit the angle of the tension spring driving the pressure regulating plate and to limit the pressure exerted by the pressure chamber spring on the high pressure oil chamber and the low pressure oil chamber.

[0017] As a preferred embodiment of the steplessly adjustable variable rotor oil pump device of the present invention, wherein: the arc-shaped protrusion of the pressure regulating plate is concentric with the outer rotor, and the inner circle of the pressure regulating plate is concentric with the inner rotor.

[0018] In a preferred embodiment of the steplessly adjustable variable rotor oil pump device of the present invention, the tension spring and the pressure chamber spring are automatically adjusted by the pressure of the oil being squeezed when the outer rotor and the inner rotor rotate together.

[0019] As a preferred embodiment of the steplessly adjustable variable rotor oil pump device of the present invention, the oil pump cover and the oil pump body are provided with the same mounting holes, and the mounting holes are fixed by threaded connection with the same screws.

[0020] The beneficial effects of this invention are:

[0021] 1. This invention improves the slippery environment of the engine's moving parts by adjusting the performance of the oil pump and supplies oil on demand, thus addressing the problem of lack of energy conservation and emission reduction.

[0022] 2. This invention saves fuel by reducing power waste at high engine speeds through the pressure regulating plate structure. Furthermore, the invention has a simple structure, high reliability, and fewer parts, which helps to reduce costs.

[0023] 3. This invention controls the high-pressure oil pump through the electronic control unit, thereby controlling the oil pump's displacement and ensuring that the engine lubrication system has an optimal oil flow rate at any speed and temperature. Attached Figure Description

[0024] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Wherein:

[0025] Figure 1 is a perspective view of the stepless adjustable variable rotor oil pump device of the present invention;

[0026] Figure 2 is a schematic diagram of the oil pump body of the stepless adjustable variable rotor oil pump device of the present invention.

[0027] Figure 3 is a cross-sectional view of the oil pump body of the steplessly adjustable variable rotor oil pump device of the present invention.

[0028] Figure 4 is a schematic diagram of the rotor assembly of the steplessly adjustable variable rotor oil pump device of the present invention.

[0029] Figure 5 is a schematic diagram of the pressure regulating component of the stepless adjustable variable rotor oil pump device of the present invention. Detailed Implementation

[0030] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0031] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0032] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that is mutually exclusive with other embodiments.

[0033] Secondly, the present invention is described in detail with reference to the schematic diagrams. When detailing the embodiments of the present invention, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not according to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of the present invention. In addition, actual fabrication should include three-dimensional spatial dimensions of length, width, and depth.

[0034] Referring to Figures 1-5, a continuously variable variable rotor oil pump device is provided, comprising:

[0035] The oil pump comprises a pump cover 1, an oil pump body 2, a rotor assembly 3, and a pressure regulating assembly 4. The oil pump body 2 has an adjusting groove 201 located inside the feedback oil chamber 202. The oil pump body 2 also has a high-pressure oil chamber 203 and a low-pressure oil chamber 204 located outside the outer rotor 301. Specifically, a compression spring platform 206 is provided outside the high-pressure oil chamber 203 and the low-pressure oil chamber 204, which is fixedly connected to a compression spring 405. The high-pressure oil chamber 203 is connected to an outlet oil pipe 207, and a feedback oil passage 209 is provided at the outlet oil pipe 207. The feedback oil chamber 202 and the outlet oil pipe 207 are connected. A solenoid valve 208 is provided inside the feedback oil passage 206. The solenoid valve 208 is electrically connected to the engine controller. Specifically, a compression spring platform 206 is provided outside the high-pressure oil chamber 203 and the low-pressure oil chamber 204. The compression spring platform 206 is fixedly connected to the compression chamber spring 405. The high-pressure oil chamber 203 is connected to the outlet oil pipe 207. A feedback oil passage 209 is provided at the outlet oil pipe 207. The feedback oil passage 209 connects the feedback oil chamber 202 and the outlet oil pipe 207. A solenoid valve 208 is provided inside the feedback oil passage 206. The solenoid valve 208 is electrically connected to the engine controller.

[0036] The rotor assembly 3 includes an outer rotor 301 and an inner rotor 302, with the outer rotor 301 located inside the oil pump body 2.

[0037] The pressure regulating component 4 includes a pressure regulating plate 401 and a pressure regulating plate adjusting plate 402, which slides inside the adjusting groove 201. The pressure regulating component 4 includes a tension spring 403, a spring slider 404, and a pressure chamber spring 405. Arc-shaped protrusions 406 are evenly distributed on the outer surface of the pressure regulating plate 401, and these protrusions 406 cooperate with the inner cavity of the oil pump body 2 to achieve rotation of the pressure regulating plate 401. The pressure regulating plate 401 is equipped with a slider fixing head 407. The pressure regulating component has two spring sliders 404, one of which is located at the slider fixing head 407. The outer side is fixed. Specifically, another spring slider 404 is fixed at the slider slot 211 of the oil pump body 2. The tension spring 403 is used to connect the two spring sliders 404. The pressure regulating plate 401 and the oil pump body 2 are provided with a limiting mechanism 210. The limiting mechanism 210 is used to limit the angle of the tension spring 403 driving the pressure regulating plate 401 and to limit the pressure exerted by the pressure chamber spring 405 on the high pressure oil chamber 203 and the low pressure oil chamber 204. The arc-shaped protrusion 406 of the pressure regulating plate is concentric with the outer rotor 301, and the inner circle 407 of the pressure regulating plate is concentric with the inner rotor 302.

[0038] Among them, the tension spring 403 and the pressure spring 405 are adjusted by the pressure of the squeezed oil when the outer rotor 301 and the inner rotor 302 rotate together. The oil pump cover 1 and the oil pump body 2 are provided with the same mounting hole 205, and the mounting hole 205 is threadedly connected and fixed with the same screw 5.

[0039] During operation, the variable displacement principle of the continuously variable rotor oil pump device is to change the usable volumetric efficiency of the rotor oil pump by adjusting the positions of the pressure regulating plate 401 and compression spring 405 relative to the high-pressure oil chamber 204 and low-pressure oil chamber 205. In the initial state, the compression spring 405 is compressed, and the high-pressure chamber of the pressure regulating plate 401 completely overlaps with the high-pressure oil chamber 204 of the oil pump body. At this time, the volumetric efficiency of the high-pressure oil chamber of the oil pump is the highest, and its performance is the strongest. As the pressure regulating plate 401 rotates under pressure and the compression spring 405 contracts, the high-pressure chamber of the pressure regulating plate 401 becomes misaligned with the high-pressure oil chamber 204 of the oil pump body. During oil delivery, the high-pressure oil chamber 204 and low-pressure oil chamber 205 on the oil pump body 2 are partially connected through the compression spring 405, resulting in a decrease in the volumetric efficiency and performance of the oil pump. The greater the rotation angle of the pressure regulating plate 201, the more severe the misalignment of the inner cavity of the oil pump body 2, and the greater the reduction in the performance of the oil pump.

[0040] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention 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 the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A continuously variable variable rotor oil pump device, characterized in that, include: The oil pump cover (1) and the oil pump body (2) are provided. The oil pump body (2) is provided with an adjustment groove (201). The adjustment groove (201) is located inside the feedback oil chamber (202). The oil pump body (2) is provided with a high-pressure oil chamber (203) and a low-pressure oil chamber (204). The high-pressure oil chamber (203) and the low-pressure oil chamber (204) are located outside the outer rotor (301). The rotor assembly (3) includes an outer rotor (301) and an inner rotor (302). The outer rotor (301) is located inside the oil pump body (2). The pressure regulating assembly (4) is provided with a pressure regulating plate (401) and an adjusting plate (402). The adjusting plate (402) is located inside the adjustment groove (201) and slides. The pressure regulating assembly (4) includes a tension spring. 403), spring slider (404), pressure chamber spring (405); a pressure spring platform (206) is provided on the outside of the high pressure oil chamber (203) and the low pressure oil chamber (204), and the pressure spring platform (206) is fixedly connected to the pressure chamber spring (405); the pressure regulating plate (401) and the oil pump body (2) are provided with a limiting mechanism (210), and the limiting mechanism (210) is used to limit the angle of the tension spring (403) driving the pressure regulating plate (401) and limit the pressure exerted by the pressure chamber spring (405) on the high pressure oil chamber (203) and the low pressure oil chamber (204); the tension spring (403) and the pressure chamber spring (405) are adjusted by the pressure of the squeezed oil when the outer rotor (301) and the inner rotor (302) rotate and cooperate.

2. The continuously variable adjustable variable rotor oil pump device according to claim 1, characterized in that: An outlet oil pipe (207) is connected to the side wall of the high-pressure oil chamber (203), and a feedback oil passage (209) is provided at the outlet oil pipe (207). The feedback oil passage (209) connects the feedback oil chamber (202) and the outlet oil pipe (207). A solenoid valve (208) is provided inside the feedback oil passage (209), and the solenoid valve (208) is electrically connected to the engine controller.

3. The continuously variable adjustable variable rotor oil pump device according to claim 1, characterized in that: The outer surface of the pressure regulating plate (401) is evenly distributed with arc-shaped protrusions (406), and the arc-shaped protrusions (406) cooperate with the inner cavity of the oil pump body (2) to realize the rotation of the pressure regulating plate (401).

4. The continuously variable adjustable variable rotor oil pump device according to claim 3, characterized in that: The pressure regulating plate (401) is provided with a slider fixing head (407), and the pressure regulating assembly is provided with two spring sliders (404), one of which is fixed outside the slider fixing head (407).

5. The continuously variable adjustable variable rotor oil pump device according to claim 4, characterized in that: Another spring slider (404) is fixed at the slider slot (211) of the oil pump body (2), and the tension spring (403) is used to connect the two spring sliders (404).

6. The continuously variable adjustable variable rotor oil pump device according to claim 4, characterized in that: The arc-shaped protrusion (406) is concentric with the outer rotor (301), and the inner circle of the pressure regulating plate is concentric with the inner rotor (302).

7. The continuously variable adjustable variable rotor oil pump device according to claim 4, characterized in that: The oil pump cover (1) and the oil pump body (2) are provided with the same mounting hole (205), and the mounting hole (205) is threadedly connected and fixed with the same screw (5).

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