Collection system and control method for preventing oil suction

Abstract

The present application relates to the technical field of engine, and discloses a collection system and control method for preventing oil suction. The system comprises an oil shell, an oil collector assembly and an information collection module; the oil shell is provided with an oil storage cavity for containing oil; the oil collector assembly comprises a collector main body and a rotary valve; the collector main body is provided with a valve seat main body and a plurality of oil collector pipe assemblies; the valve seat main body surrounds a valve seat cavity; each oil collector pipe assembly is in communication with the valve seat cavity; the rotary valve is matched and installed in the valve seat cavity; the rotary valve surrounds a valve cavity; the valve cavity is communicated with an oil pump; and the rotary valve can rotate around an operating axis to make at least one oil collector pipe assembly communicate with the valve cavity; the information collection module comprises an inclination sensor for detecting the inclination angle of the oil shell, an acceleration sensor for detecting the acceleration of the oil shell and a position sensor for monitoring the position of the rotary valve. The system can control the rotation of the rotary valve according to the actual working condition to prevent the condition of oil suction.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of engine technology, and in particular to a collection system and control method for preventing oil suction. BACKGROUND

[0002] The lubrication system is crucial to the normal operation of the engine, which continuously delivers sufficient volume of clean lubricating oil to the friction surface of each mating part to reduce friction resistance and reduce friction and wear of the parts. If the lubrication system fails, it will affect the reliability and durability of the engine.

[0003] Oil suction is one of the ways of lubrication system failure. Different use scenarios of users can cause oil suction problems, such as long time driving on uneven road or slope; and different driving habits of users can also cause oil suction problems, such as users often drive in extreme conditions such as sudden acceleration, sudden deceleration, left and right turns, etc. Light oil suction can cause abnormal wear of the engine, and heavy oil suction can cause accidents.

[0004] To solve the problem of oil suction, the traditional scheme generally uses to increase the depth of the oil pan or the dry oil pan to solve the problem. However, the design of increasing the depth of the oil pan is not conducive to compact layout, and the structure of the dry oil pan is complex, which greatly increases the cost of the whole machine. SUMMARY

[0005] The purpose of the present application is to provide a collection system and control method for preventing oil suction, so as to ensure that there is no suction phenomenon under various extreme conditions.

[0006] To achieve this purpose, the present application adopts the following technical scheme:

[0007] The application discloses a collection system for preventing oil suction, which comprises an oil shell, an oil collector assembly and an information collection module. The oil shell is provided with an oil storage cavity for containing oil, and is connected with an oil pump. The oil collector assembly is installed in the oil storage cavity and comprises a collector main body and a rotary valve. The collector main body is provided with a valve seat main body and a plurality of oil collector pipe assemblies which are uniformly distributed around the valve seat main body. The valve seat main body surrounds a valve seat cavity, and each oil collector pipe assembly is connected with the valve seat cavity. The rotary valve is installed in the valve seat cavity and surrounds a valve cavity which is connected with the input end of the oil pump. The cavity wall of the valve cavity is provided with a liquid inlet. The rotary valve can rotate around an working axis, so that at least one oil collector pipe assembly is connected with the valve cavity through the liquid inlet.

[0008] As a preferred technical scheme of the collection system for preventing oil suction, the collector main body comprises two oil collector pipe assemblies which are divided into t1 pipe and t2 pipe. The rotary valve can rotate between a first position and a second position around the working axis, and passes through a third position between the first position and the second position. When the rotary valve is in the first position, the t1 pipe is connected with the valve cavity through the liquid inlet, and the t2 pipe is disconnected with the valve cavity. When the rotary valve is in the second position, the t2 pipe is connected with the valve cavity through the liquid inlet, and the t1 pipe is disconnected with the valve cavity. When the rotary valve is in the third position, the t1 pipe is connected with the valve cavity through the liquid inlet, and the t2 pipe is connected with the valve cavity through the liquid inlet.

[0009] As a preferred technical scheme of the collection system for preventing oil suction, the liquid inlet comprises a first liquid inlet, a second liquid inlet and a third liquid inlet. The third liquid inlet is located between the first liquid inlet and the second liquid inlet. The first liquid inlet and the third liquid inlet are arranged at an angle of 90 degrees along the working axis, and the second liquid inlet and the third liquid inlet are arranged at an angle of 90 degrees along the working axis. When the rotary valve is in the first position, the t1 pipe is opposite to the third liquid inlet. When the rotary valve is in the second position, the t2 pipe is opposite to the third liquid inlet. When the rotary valve is in the third position, the t1 pipe is opposite to the first liquid inlet, and the t2 pipe is opposite to the second liquid inlet.

[0010] As a preferred technical solution of the oil suction prevention collection system, the valve seat body comprises a valve seat assembly and a retainer, the valve seat assembly is provided with a receiving groove, the groove top of the receiving groove is communicated with a mounting groove, the retainer is detachably embedded in the mounting groove, and the retainer and the receiving groove surround the valve cavity.

[0011] As a preferred technical solution of the oil suction prevention collection system, the valve seat assembly further comprises a driving assembly for driving the rotary valve to rotate around the working axis, the driving assembly comprises a driving motor and a driving shaft fixedly connected to the output end of the driving motor, the driving shaft is arranged at the groove bottom of the receiving groove, and the rotary valve is detachably connected with the driving shaft.

[0012] As a preferred technical solution of the oil suction prevention collection system, in the direction of the working axis, the bottom end of the rotary valve is fixedly connected with a bottom support shaft, a positioning hole is concavely arranged on the driving shaft, and the positioning hole is rotatably sleeved with the bottom support shaft; the top end of the rotary valve is fixedly connected with a top support shaft, an axle hole is arranged on the retainer, and the top support shaft is rotatably connected with the axle hole.

[0013] As a preferred technical solution of the oil suction prevention collection system, in the direction of the working axis, the top end of the rotary valve is provided with a rotary valve outlet, the retainer is provided with a retainer through hole, the oil pump is mounted on the retainer, and the valve cavity is communicated with the input end of the oil pump through the rotary valve outlet and the retainer through hole.

[0014] As a preferred technical solution of the oil suction prevention collection system, the valve seat assembly is fixedly connected with an inlet flange, the number of the inlet flange is the same as that of the oil collection pipe assembly, each oil collection pipe assembly is detachably mounted on one inlet flange, the inlet flange is provided with an inlet passage, and the oil collection pipe assembly is communicated with the valve seat cavity through the inlet passage.

[0015] As a preferred technical solution of the oil suction prevention collection system, the oil collection pipe assembly comprises an oil collection pipe arranged downwardly and obliquely, the top end of the oil collection pipe is fixedly connected with an oil collection pipe flange, the oil collection pipe flange can be matched and connected to the inlet flange, and the bottom end of the oil collection pipe is provided with an oil collection port.

[0016] The control method for preventing oil suction is applied to the oil suction prevention collection system, and comprises the following steps:

[0017] S10: Monitor the tilt angle and acceleration information of the oil housing, calculate the theoretical position of the oil level based on the tilt angle and acceleration information, analyze the suction situation of each oil collection pipe assembly, and obtain the target position of the rotary valve accordingly.

[0018] S20: Monitor the position information of the rotary valve, obtain the current position of the rotary valve, and calculate the rotation angle of the rotary valve based on the relative position between the target position and the current position;

[0019] S30: Drive the rotary valve to rotate to the target position;

[0020] S40: Verify the position information of the rotary valve to determine whether the rotary valve is in position. If yes, proceed to S50; otherwise, return to S20.

[0021] S50: End the drive of the rotary valve and continue to monitor the tilt angle information and the acceleration information; until the tilt angle information and / or the acceleration information change, then return to S10.

[0022] The beneficial effects of this invention are:

[0023] This oil cavitation prevention collection system utilizes a rotary valve designed for precise installation within the valve seat cavity. This design integrates with the valve cavity wall, which has a through-hole inlet. This allows oil collection assemblies connected to the inlet to supply oil to the oil pump via the valve cavity, while those not connected to the inlet are disconnected, stopping oil supply to the pump. This selective on / off design between the oil collection assemblies and the valve cavity allows for adjustment of the on / off state of each oil collection assembly. When cavitation occurs in some assemblies due to a gap between them and the oil level, the corresponding assembly is closed, preventing oil cavitation. The oil pump then transports the oil from the reservoir to external equipment, ensuring a smooth oil supply. The design of several oil collection pipe assemblies evenly distributed around the valve seat body ensures uniform arrangement of the oil collection pipe assemblies. This guarantees that the oil collector assembly can smoothly draw oil from different locations within the oil reservoir, preventing the entire oil collection pipe assembly from sucking up all the oil and ensuring the stable operation of the anti-air suction system. Simultaneously, the information collection module monitors the working conditions of the oil housing, allowing the rotary valve to actively adjust according to the actual operating conditions, controlling its rotation to the corresponding position to open and close the oil suction channel, thus proactively preventing oil air suction. This structure is simple, reliable, space-saving, and highly stable, enabling long-term and stable application in engineering practice.

[0024] This oil cavitation prevention control method combines the tilt angle and acceleration information of the oil pan with the position information of the rotary valve to rotate the rotary valve to the target position. This ensures that the oil cavitation prevention collection system does not experience cavitation under various extreme operating conditions. Furthermore, by verifying the position information of the rotary valve, it is possible to determine whether the valve is in the correct position, thereby achieving the purpose of verifying the oil cavitation prevention control method and improving its success rate and reliability. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of the oil collection system for preventing oil cavitation provided in an embodiment of the present invention;

[0026] Figure 2 This is a cross-sectional view of the oil collection system for preventing oil cavitation under uniform speed moving conditions provided in an embodiment of the present invention.

[0027] Figure 3 This is a cross-sectional view of the oil collection system for preventing oil cavitation during downhill driving provided in an embodiment of the present invention;

[0028] Figure 4 This is a schematic diagram of the structure of the oil collector assembly provided in an embodiment of the present invention;

[0029] Figure 5 This is a schematic diagram of the structure of the oil collection pipe assembly provided in an embodiment of the present invention;

[0030] Figure 6 This is a schematic diagram of the valve seat assembly provided in an embodiment of the present invention;

[0031] Figure 7 This is a cross-sectional view of the valve seat assembly provided in an embodiment of the present invention;

[0032] Figure 8 This is a first-view structural schematic diagram of the rotary valve provided in an embodiment of the present invention;

[0033] Figure 9 This is a second-view structural schematic diagram of the rotary valve provided in an embodiment of the present invention;

[0034] Figure 10 This is a schematic diagram of the cage structure provided in an embodiment of the present invention;

[0035] Figure 11 This is a schematic diagram of the tilt sensor, acceleration sensor, control unit, and oil collector assembly provided in an embodiment of the present invention.

[0036] In the picture:

[0037] 100. Tilt sensor;

[0038] 200. Accelerometer sensor;

[0039] 300. Control unit;

[0040] 400. Oil collector assembly; 410. Oil collection pipe assembly; 411. Oil collection port; 412. Oil collection pipe; 413. Oil collection pipe flange; 420. Valve seat assembly; 421. Valve seat body; 422. Valve seat outlet flange; 4221. Valve seat outlet passage; 4222. Valve seat outlet flange mounting surface; 4223. Valve seat outlet flange mounting bolt holes; 423. First inlet flange; 4231. First inlet passage; 4232. First inlet flange mounting surface; 4233. First inlet flange mounting bolt holes; 424. Second inlet flange; 4241. Second inlet passage; 4242. Second inlet flange mounting surface; 4243. Second inlet flange mounting bolt holes. 425. Bolt hole; 4251. Drive assembly; 4252. Drive motor; 4253. Drive shaft; 4253. Positioning hole; 426. Position sensor; 427. Mounting slot; 4271. Mating surface; 4272. Mounting positioning surface; 430. Rotary valve; 431. First part; 4311. First liquid inlet; 4312. Second liquid inlet; 4313. Third liquid inlet; 432. Second part; 4321. Rotary valve support structure; 4322. Rotary valve outlet; 4323. Top support shaft; 433. Third part; 4331. Bottom plate; 4332. Bottom support shaft; 440. Cage; 441. Cage mounting surface; 442. Cage support structure; 443. Shaft hole;

[0041] 500. Oil pan. Detailed Implementation

[0042] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0043] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "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. The terms "first position" and "second position" refer to two different positions. Furthermore, "above," "on top of," and "over" the first feature in relation to the second feature includes the first feature directly above and diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "under," and "below" the first feature in relation to the second feature includes the first feature directly below and diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0044] 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 based on the specific circumstances.

[0045] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0046] like Figures 1 to 11As shown, this embodiment provides an oil collection system to prevent oil cavitation, including an oil housing, an oil collector assembly 400, and an information collection module. The oil housing has an oil reservoir for containing oil, and the oil housing is connected to an oil pump. The oil collector assembly 400 is installed in the oil reservoir. The oil collector assembly 400 includes a collector body and a rotary valve 430. The collector body has a valve seat body and several oil collection pipe assemblies 410. The several oil collection pipe assemblies 410 are evenly distributed around the valve seat body, forming a valve seat cavity. Each oil collection pipe assembly 410 is connected to the valve seat cavity. The rotary valve 430 is fitted into the valve seat cavity, forming a valve chamber. The valve chamber is connected to the input end of the oil pump, and the cavity wall of the valve chamber has a liquid inlet. The rotary valve 430 can rotate around the working axis, so that at least one oil collection pipe assembly 410 is connected to the valve chamber through the liquid inlet. The information collection module includes an angle sensor 100, an acceleration sensor 200, and a position sensor 426. The angle sensor 100 is used to detect the tilt angle of the oil housing, the acceleration sensor 200 is used to detect the acceleration of the oil housing, and the position sensor 426 is used to monitor the position of the rotary valve 430.

[0047] This oil cavitation prevention collection system utilizes a rotary valve 430 fitted within the valve seat cavity. This design, combined with the structure where the valve cavity wall connects to the inlet, allows oil collection pipe assemblies 410 connected to the inlet to supply oil to the oil pump through the valve cavity. Conversely, oil collection pipe assemblies 410 not connected to the inlet are disconnected, stopping oil supply to the pump. This selective on / off design between the oil collection pipe assemblies 410 and the valve cavity is achieved. By adjusting the on / off state of each oil collection pipe assembly 410, when cavitation occurs due to a gap between the assembly and the oil surface, the corresponding assembly is closed, preventing oil cavitation. The oil pump then transports the oil from the reservoir to external equipment, ensuring a smooth oil supply. The design of several oil collection pipe assemblies 410 evenly distributed around the valve seat body ensures uniform arrangement of the oil collection pipe assemblies 410, guaranteeing that the oil collector assembly 400 can smoothly draw oil from different locations within the oil reservoir. This avoids the scenario where all oil collection pipe assemblies 410 are sucked up completely, ensuring the stable operation of the anti-air suction collection system. Simultaneously, the information collection module monitors the working conditions of the oil housing, allowing the rotary valve 430 to actively adjust according to the actual working conditions of the oil housing, controlling the rotary valve 430 to rotate to the corresponding position, thereby opening and closing the oil suction channel and actively preventing oil air suction. This structure is simple, reliable, space-saving, and highly stable, enabling long-term and stable application in engineering practice.

[0048] Specifically, the working axis extends in the vertical direction.

[0049] In this embodiment, the oil pan is applied to the engine of a vehicle. In other embodiments of this embodiment, the oil pan is applied to other engineering equipment. The specific application scenario is determined by those skilled in the art, and the determination method is a conventional technical means in the art, which is well mastered by those skilled in the art, and will not be elaborated here.

[0050] In this embodiment, the oil cavitation prevention collection system also includes a control unit 300, which is communicatively connected to the oil collector assembly 400 and the information collection module. The control unit 300 can process data such as tilt angle information, acceleration information, and position information of the rotary valve 430, and can drive the rotary valve 430 to rotate around its working axis.

[0051] The control unit 300 can calculate the theoretical position of the oil level based on the tilt angle information and acceleration information, and calculate the theoretical target position of the rotary valve 430 accordingly. After receiving the current position information of the rotary valve 430 transmitted from the information collection module, the control unit 300 can calculate the angle that the rotary valve 430 should rotate based on the positional relationship between the target position and the current position.

[0052] In this embodiment, the position sensor 426 is fixedly installed at the bottom of the collector body.

[0053] For example, the valve seat cavity is cylindrical in shape, and the working axis coincides with the axis of the valve seat cavity. In other embodiments of this example, the valve seat cavity is spherical in shape, and the working axis passes through the center of the sphere.

[0054] In this embodiment, the collector body includes two oil collection pipe assemblies 410, which are divided into pipe t1 and pipe t2. The rotary valve 430 can rotate around its working axis between a first position and a second position. The rotary valve 430, rotating between the first and second positions, passes through a third position. When the rotary valve 430 is in the first position, pipe t1 is connected to the valve cavity through the inlet, and pipe t2 is isolated from the valve cavity. When the rotary valve 430 is in the second position, pipe t2 is connected to the valve cavity through the inlet, and pipe t1 is isolated from the valve cavity. When the rotary valve 430 is in the third position, pipe t1 is connected to the valve cavity through the inlet, and pipe t2 is connected to the valve cavity through the inlet.

[0055] The two oil collection pipe assemblies 410 are symmetrically arranged about the working axis, ensuring a uniform distribution of the oil collection pipe assemblies 410. Combined with the rotary valve 430 switching between the first, second, and third positions, the on / off state of pipes t1 and t2 can be switched, ensuring that the oil collector assembly 400 can handle different situations where the oil collection pipe assemblies 410 experience cavitation, and guaranteeing the connection between the valve chamber and at least one oil collection pipe assembly 410. This design is simple and reliable, occupies little space, and is easy to manufacture, helping to reduce the production cost of the oil collector assembly 400 and improve its processing efficiency.

[0056] Furthermore, the liquid inlet includes a first liquid inlet 4311, a second liquid inlet 4312, and a third liquid inlet 4313. The third liquid inlet 4313 is located between the first liquid inlet 4311 and the second liquid inlet 4312. The first liquid inlet 4311 and the third liquid inlet 4313 are set at a 90° angle along the working axis, and the second liquid inlet 4312 and the third liquid inlet 4313 are also set at a 90° angle along the working axis. When the rotary valve 430 is in the first position, the t1 pipe is directly opposite the third liquid inlet 4313. When the rotary valve 430 is in the second position, the t2 pipe is directly opposite the third liquid inlet 4313. When the rotary valve 430 is in the third position, the t1 pipe is directly opposite the first liquid inlet 4311, and the t2 pipe is directly opposite the second liquid inlet 4312. The above design ensures that the inlet serving a connecting function can be smoothly aligned with the oil collection pipe assembly 410, while the inlet not serving a connecting function is fitted against the cavity wall of the valve seat chamber to prevent oil from entering the valve chamber through this inlet. The first inlet 4311, the second inlet 4312, and the third inlet 4313 have simple and reliable structures, occupy little space, and are easy to manufacture. While ensuring the smooth operation of the rotary valve 430, they reduce the production cost of the rotary valve 430 and improve the processing efficiency of the rotary valve 430.

[0057] In other embodiments of this example, the number of liquid inlets is four or more, and the included angle between two adjacent liquid inlets is not 90°. The arrangement of the liquid inlets only needs to ensure that they correspond to the oil collection pipe assembly 410 that may be sucked into the system, based on actual operating conditions. The specific layout is common knowledge in the art and is well understood by those skilled in the art, and will not be elaborated upon here.

[0058] For example, the valve seat body includes a valve seat assembly 420 and a retainer 440. The valve seat assembly 420 has a receiving groove, and the top of the receiving groove is connected to a mounting groove 427. The retainer 440 is detachably embedded in the mounting groove 427, and the retainer 440 and the receiving groove form a valve cavity.

[0059] The separate design of the valve seat assembly 420 and the cage 440 reduces the manufacturing difficulty of the valve seat body, as well as the manufacturing and assembly difficulty of the rotary valve 430, and also facilitates the subsequent maintenance and operation of the rotary valve 430.

[0060] In this embodiment, the top of the receiving groove is provided with a valve seat outlet channel 4221, which is connected to an installation groove 427 with a diameter larger than that of the valve seat cavity. The installation groove 427 is cylindrical in shape, and the side wall of the installation groove 427 is a mating surface 4271. The mating surface 4271 is connected to the cavity wall of the valve seat cavity through an installation positioning surface 4272. When the retainer 440 is embedded in the installation groove 427, the end face of the retainer 440 is in contact with the installation positioning surface 4272, and the side face of the retainer 440 is in contact with the mating surface 4271.

[0061] Specifically, the upper and lower end faces of the cage mounting surface 441 are chamfered or rounded, which helps to reduce the assembly difficulty of the cage 440 in the mounting groove 427. The edge of the shaft hole 443 opening is also chamfered or rounded, which facilitates the mating of the shaft hole 443 with the top support shaft 4323. Furthermore, the bottom surface of the cage 440 is spaced apart from the top surface of the rotary valve 430.

[0062] Furthermore, the valve seat assembly 420 also includes a drive assembly 425 for driving the rotary valve 430 to rotate around its working axis. The drive assembly 425 includes a drive motor 4251 and a drive shaft 4252 fixed to the output end of the drive motor 4251. The drive shaft 4252 is placed at the bottom of the receiving groove, and the rotary valve 430 is detachably connected to the drive shaft 4252. The arrangement of the drive motor 4251 and drive shaft 4252 achieves the purpose of driving the rotary valve 430 to rotate. The detachable connection between the rotary valve 430 and the drive shaft 4252 facilitates the disassembly and assembly of the rotary valve 430 on the valve seat assembly 420, reduces the difficulty of maintenance and replacement of the rotary valve 430, and improves the maintenance efficiency of the oil collector assembly 400. Specifically, the drive motor 4251 is fixed to the bottom end of the valve seat assembly 420.

[0063] Furthermore, along the working axis, a bottom support shaft 4332 is fixedly connected to the bottom end of the rotary valve 430, and a positioning hole 4253 is recessed on the drive shaft 4252. The positioning hole 4253 is anti-rotationally sleeved on the bottom support shaft 4332. A top support shaft 4323 is fixedly connected to the top end of the rotary valve 430, and a shaft hole 443 is opened on the retainer 440. The top support shaft 4323 and the shaft hole 443 are rotatably engaged.

[0064] The positioning hole 4253, with its anti-rotation sleeve fitted onto the bottom support shaft 4332, ensures the detachable connection of the rotary valve 430 to the drive shaft 4252. It also prevents relative sliding between the rotary valve 430 and the drive shaft 4252, ensuring accurate rotation of the rotary valve 430. The rotational engagement between the top support shaft 4323 and the shaft hole 443 determines the relative position of the rotary valve 430 and the retainer 440, ensuring the rotary valve 430 rotates around its working axis and reducing the risk of accidental relative positional shift. Specifically, the projections of the positioning hole 4253 and the shaft hole 443 onto a plane perpendicular to the working axis are both cross-shaped.

[0065] Furthermore, in the direction of the working axis, the top of the rotary valve 430 is provided with a rotary valve outlet 4322, the cage 440 has a cage through hole, the oil pump is mounted on the cage 440, and the valve chamber is connected to the input end of the oil pump through the rotary valve outlet 4322 and the cage through hole.

[0066] The design of the rotary valve outlet 4322 and the cage through-hole enables communication between the valve chamber and the oil pump. These features ensure the stable operation of the oil collector assembly 400.

[0067] The cage 440 includes a cage outer ring and a cage support structure 442 that is cross-shaped and fixed to the inner wall of the cage outer ring. The shaft hole 443 passes through the middle of the cage support structure 442. The outer wall of the cage outer ring is the cage mounting surface 441, and the cage mounting surface 441 is in contact with the mating surface 4271.

[0068] For example, the rotary valve 430 includes a tubular first part 431, a second part 432 connected to the top of the first part 431, and a third part 433 connected to the bottom of the first part 431. A first inlet 4311, a second inlet 4312, and a third inlet 4313 are all located on the first part 431. The second part 432 includes a rotary valve support structure 4321 arranged in a cross shape, which, together with the first part 431, forms a rotary valve outlet 4322. A top support shaft 4323 protrudes from the middle of the rotary valve support structure 4321. This design, while ensuring the strength of the second part 432, employs a minimum solidity design, maximizing the area of ​​the rotary valve outlet 4322. The third part 433 includes a bottom plate 4331 for closing the bottom of the first part 431 and a bottom support shaft 4332 fixed to the bottom of the bottom plate 4331. The bottom plate 4331 is designed to seal the bottom of the first part 431, thereby further improving the sealing effect of the rotary valve 430.

[0069] In this embodiment, an inlet flange is fixedly connected to the valve seat assembly 420. The number of inlet flanges is the same as that of the oil collection pipe assembly 410, and each oil collection pipe assembly 410 can be detachably installed on one inlet flange. The inlet flange has an inlet channel, through which the oil collection pipe assembly 410 communicates with the valve seat cavity. Specifically, all inlet flanges are located in the same horizontal plane. The design of the inlet flange is simple and reliable, suitable for the detachable connection between the valve seat assembly 420 and the oil collection pipe assembly 410. The flange structure reduces the difficulty of positioning and disassembly, and improves the production and manufacturing efficiency of the oil collector assembly 400.

[0070] In this embodiment, the valve seat assembly 420 includes a valve seat housing 421 forming a valve seat cavity and a valve seat outlet flange 422 fixed to the top of the valve seat housing 421. The valve seat outlet flange 422 has a valve seat outlet channel 4221 that communicates with the top of the receiving groove. The end of the valve seat outlet flange 422 facing away from the receiving groove is provided with a valve seat outlet flange mounting surface 4222, and a valve seat outlet flange mounting bolt hole 4223 is also provided on the valve seat outlet flange 422. After the input end of the oil pump is matched and fitted with the valve seat outlet flange mounting surface 4222, the oil pump can be fixed to the valve seat outlet flange 422 by simultaneously connecting the mounting bolt through the valve seat outlet flange mounting bolt hole 4223 and the input end of the oil pump with the mounting bolt.

[0071] For example, the valve seat housing 421 has a first inlet channel 4231 and a second inlet channel 4241 that are directly opposite each other. Two oil collection pipe assemblies 410 are connected to the valve seat cavity through the first inlet channel 4231 and the second inlet channel 4241 respectively. The first inlet flange 423 and the second inlet flange 424 are fixed to both sides of the valve seat housing 421.

[0072] The first inlet channel 4231 passes through the first inlet flange 423. The end of the first inlet flange 423 facing away from the receiving groove has a first inlet flange mounting surface 4232, and the first inlet flange 423 also has a first inlet flange mounting bolt hole 4233. After the oil collection pipe flange 413 is matched and fitted with the first inlet flange mounting surface 4232, the mounting bolts are used to simultaneously pass through the first inlet flange mounting bolt hole 4233 and the oil collection pipe flange 413, so that the oil collection pipe assembly 410 can be fixed to the first inlet flange 423.

[0073] The second inlet channel 4241 passes through the second inlet flange 424. The end of the second inlet flange 424 facing away from the receiving groove has a second inlet flange mounting surface 4242, and the second inlet flange 424 also has a second inlet flange mounting bolt hole 4243. After the oil collection pipe flange 413 is matched and fitted with the second inlet flange mounting surface 4242, the mounting bolts are simultaneously passed through the second inlet flange mounting bolt hole 4243 and the oil collection pipe flange 413, so that the oil collection pipe assembly 410 can be fixed to the second inlet flange 424.

[0074] In this embodiment, the oil collection pipe assembly 410 includes an oil collection pipe 412 arranged at an inclined downward direction. An oil collection pipe flange 413 is fixedly connected to the top end of the oil collection pipe 412, and the oil collection pipe flange 413 can be matched and connected to an inlet flange. An oil collection port 411 is provided at the bottom end of the oil collection pipe 412. The oil collection pipe assembly 410 has a simple and reliable structure, ensuring its oil suction capacity, reducing the space occupied, and lowering manufacturing costs.

[0075] For example, the front oil collection pipe assembly 410 can be arranged to the left front and the rear oil collection pipe assembly 410 can be arranged to the right rear. The above design can take into account the working conditions of left and right slopes or turns.

[0076] Specifically, the oil pan is formed by splicing an oil pan 500 and a top cover attached to the top of the oil pan 500.

[0077] This embodiment also provides a control method for preventing oil cavitation, applied to the aforementioned oil cavitation collection system, including the following steps:

[0078] Step 1: Monitor the tilt angle and acceleration information of the oil housing, and calculate the theoretical position of the oil level based on the tilt angle and acceleration information. Analyze the air suction situation of each oil collection pipe assembly 410, and obtain the target position of the rotary valve 430 accordingly.

[0079] Step 2: Monitor the position information of rotary valve 430, obtain the current position of rotary valve 430, and calculate the rotation angle of rotary valve 430 based on the relative position between the target position and the current position.

[0080] Step 3: Drive the rotary valve 430 to rotate to the target position.

[0081] Step 4: Verify the position information of rotary valve 430 to determine if rotary valve 430 is in position. If yes, proceed to step 5; otherwise, return to step 2.

[0082] Step 5: Stop driving the rotary valve 430 and continue monitoring the tilt angle and acceleration information; return to step 1 only after the tilt angle and / or acceleration information changes.

[0083] This oil cavitation prevention control method combines the tilt angle and acceleration information of the oil casing with the position information of the rotary valve 430 to rotate the rotary valve 430 to the target position. This ensures that the oil cavitation prevention collection system does not experience cavitation under various extreme operating conditions. Furthermore, by verifying the position information of the rotary valve 430, it is possible to determine whether the rotary valve 430 is in the correct position, thereby achieving the purpose of verifying the oil cavitation prevention control method and improving its success rate and reliability.

[0084] The following two typical operating conditions illustrate the principle and control method of preventing air suction:

[0085] X represents the horizontal direction. For example... Figure 1 , Figure 2 as well as Figures 4 to 11 As shown, when the oil suction collection system moves at a constant speed on a level road surface, the oil level is horizontal, and the oil collection port 411 of the oil collection pipe assembly 410 is below the oil level. At this time, the first inlet 4311 of the rotary valve 430 is connected to the first inlet channel 4231, and the second inlet 4312 of the rotary valve 430 is connected to the second inlet channel 4241.

[0086] The engine oil at the rear of the oil pan 500 flows sequentially through the oil collection port 411, oil collection pipe 412, and oil collection pipe flange 413 of the rear oil collector, into the first inlet channel 4231 and the first liquid inlet 4311, and then flows out to the oil pump through the rotary valve outlet 4322. At this time, the t1 pipe is opened. The engine oil at the front of the oil pan 500 flows sequentially through the oil collection port 411, oil collection pipe 412, and oil collection pipe flange 413 of the front oil collector, into the second inlet channel 4241 and the second liquid inlet 4312, and then flows out to the oil pump through the rotary valve outlet 4322. At this time, the t2 pipe is opened.

[0087] When moving at a constant speed on a level road surface, both front and rear oil collectors work simultaneously, that is, the t1 and t2 pipes are opened at the same time, and there will be no oil suction phenomenon.

[0088] like Figure 1 as well as Figures 3 to 11As shown, when the oil cavitation prevention collection system is in a downhill or rapidly decelerating condition, the oil level will surge towards the front end in the direction of movement. The oil collection port 411 of the front oil collection pipe assembly 410 will be below the oil level and will not experience oil cavitation. However, the oil collection port 411 of the rear oil collection pipe assembly 410 may be above the oil level, which may lead to oil cavitation.

[0089] At this time, based on the movement state of the collection system to prevent oil suction, the drive assembly 425 drives the rotary valve 430 to rotate 90°, so that the rotary valve 430 is not connected to the first inlet channel 4231, and the third inlet 4313 of the rotary valve 430 is connected to the second inlet channel 4241.

[0090] The oil in the rear of the oil pan 500 is closed because the rotary valve 430 is not connected to the first inlet channel 4231. The oil in the front of the oil pan 500 flows through the oil collection port 411, oil collection pipe 412, and oil collection pipe flange 413 of the front oil collector, into the second inlet channel 4241 and the third inlet port 4313, and then flows out to the oil pump through the rotary valve outlet 4322. At this time, the t2 pipeline is opened.

[0091] When moving downhill or decelerating rapidly, only the front oil collector works, meaning the front T2 pipe is open and the rear T1 pipe is closed, thus preventing the oil from being sucked into the air.

[0092] The above description only illustrates two typical operating conditions. In actual vehicle operation, the oil cavitation prevention collection system often operates under more complex conditions. Besides considering forward and backward slopes and acceleration, it may also need to consider the superposition of various operating conditions such as turning and left / right tilt angles. In this case, it is only necessary to control the rotary valve 430 according to the actual situation, thereby controlling the opening and closing of the first inlet channel 4231 and the second inlet channel 4241 to achieve the design objective of preventing oil cavitation.

[0093] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A collection system to prevent oil suction from cavitating, characterized in that, include: An oil housing is provided with an oil reservoir for containing engine oil, and the oil housing is connected to an oil pump; An oil collector assembly (400) is installed in the oil storage chamber. The oil collector assembly (400) includes a collector body and a rotary valve (430). The collector body is provided with a valve seat body and a plurality of oil collection pipe assemblies (410). The plurality of oil collection pipe assemblies (410) are evenly distributed around the valve seat body in a circumferential manner. The valve seat body forms a valve seat cavity. Each oil collection pipe assembly (410) is connected to the valve seat cavity. The rotary valve (430) is matched and installed in the valve seat cavity. The rotary valve (430) forms a valve cavity. The valve cavity is connected to the input end of the oil pump. The cavity wall of the valve cavity has a liquid inlet. The rotary valve (430) can rotate around the working axis so that at least one oil collection pipe assembly (410) is connected to the valve cavity through the liquid inlet. The information collection module includes a tilt sensor (100), an acceleration sensor (200), and a position sensor (426). The tilt sensor (100) is used to detect the tilt angle of the oil housing, the acceleration sensor (200) is used to detect the acceleration of the oil housing, and the position sensor (426) is used to monitor the position of the rotary valve (430). The collector body includes two oil collection pipe assemblies (410), which are divided into pipe t1 and pipe t2. The rotary valve (430) can rotate around the working axis between a first position and a second position. When the rotary valve (430) rotates between the first position and the second position, it passes through a third position. When the rotary valve (430) is in the first position, pipe t1 is connected to the valve cavity through the inlet, and pipe t2 is isolated from the valve cavity. When the rotary valve (430) is in the second position, pipe t2 is connected to the valve cavity through the inlet, and pipe t1 is isolated from the valve cavity. When the rotary valve (430) is in the third position, pipe t1 is connected to the valve cavity through the inlet, and pipe t2 is connected to the valve cavity through the inlet. The liquid inlet includes a first liquid inlet (4311), a second liquid inlet (4312), and a third liquid inlet (4313). The third liquid inlet (4313) is located between the first liquid inlet (4311) and the second liquid inlet (4312). The first liquid inlet (4311) and the third liquid inlet (4313) are arranged at a 90° angle along the working axis. The second liquid inlet (4312) and the third liquid inlet (4313) are arranged along the working axis. The axial direction is set at a 90° angle; when the rotary valve (430) is in the first position, the t1 pipe is directly opposite the third inlet (4313); when the rotary valve (430) is in the second position, the t2 pipe is directly opposite the third inlet (4313); when the rotary valve (430) is in the third position, the t1 pipe is directly opposite the first inlet (4311), and the t2 pipe is directly opposite the second inlet (4312).

2. The oil suction prevention collection system according to claim 1, characterized in that, The valve seat body includes a valve seat assembly (420) and a retainer (440). The valve seat assembly (420) has a receiving groove, and the top of the receiving groove is connected to an installation groove (427). The retainer (440) is detachably embedded in the installation groove (427). The retainer (440) and the receiving groove together form the valve cavity.

3. The oil suction prevention collection system according to claim 2, characterized in that, The valve seat assembly (420) further includes a drive assembly (425) for driving the rotary valve (430) to rotate around the working axis. The drive assembly (425) includes a drive motor (4251) and a drive shaft (4252) fixed to the output end of the drive motor (4251). The drive shaft (4252) is placed at the bottom of the receiving groove, and the rotary valve (430) is detachably connected to the drive shaft (4252).

4. The oil suction collection system according to claim 3, characterized in that, In the direction of the working axis, the bottom end of the rotary valve (430) is fixedly connected to a bottom support shaft (4332), and the drive shaft (4252) is recessed with a positioning hole (4253), which is anti-rotationally sleeved on the bottom support shaft (4332); the top end of the rotary valve (430) is fixedly connected to a top support shaft (4323), and the retainer (440) is provided with a shaft hole (443), which is rotatably engaged with the shaft hole (443).

5. The oil suction prevention collection system according to claim 4, characterized in that, In the direction of the working axis, the top of the rotary valve (430) is provided with a rotary valve outlet (4322), the cage (440) has a cage through hole, the oil pump is mounted on the cage (440), and the valve chamber is connected to the input end of the oil pump through the rotary valve outlet (4322) and the cage through hole.

6. The oil suction prevention collection system according to claim 2, characterized in that, An inlet flange is fixedly connected to the valve seat assembly (420). The number of inlet flanges is the same as that of the oil collection pipe assembly (410). Each oil collection pipe assembly (410) can be detachably installed on one of the inlet flanges. The inlet flange has an inlet channel. The oil collection pipe assembly (410) is connected to the valve seat cavity through the inlet channel.

7. The oil suction prevention collection system according to claim 6, characterized in that, The oil collection pipe assembly (410) includes an oil collection pipe (412) that is inclined downward. An oil collection pipe flange (413) is fixed to the top end of the oil collection pipe (412). The oil collection pipe flange (413) can be matched and connected to the inlet flange. An oil collection port (411) is provided at the bottom end of the oil collection pipe (412).

8. A control method for preventing oil cavitation, applied to the oil cavitation prevention collection system according to any one of claims 1-7, characterized in that, Includes the following steps: S10: Monitor the tilt angle and acceleration information of the oil housing, calculate the theoretical position of the oil level based on the tilt angle and acceleration information, analyze the suction of each oil collection pipe assembly (410), and obtain the target position of the rotary valve (430) accordingly. S20: Monitor the position information of the rotary valve (430), obtain the current position of the rotary valve (430), and calculate the rotation angle of the rotary valve (430) based on the relative position between the target position and the current position; S30: Drive the rotary valve (430) to rotate to the target position; S40: Verify the position information of the rotary valve (430) to determine whether the rotary valve (430) is in position. If yes, proceed to S50; otherwise, return to S20. S50: End the drive of the rotary valve (430) and continue to monitor the tilt angle information and the acceleration information; until the tilt angle information and / or the acceleration information change, then return to S10.

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