An oil sump and method of use thereof, engine

Abstract

This application discloses an oil pan and its usage method, as well as an engine. The oil pan includes: an oil pan body, a central control tube, and a rotating tool or sealing plug. The oil pan body has an installation channel on the side away from the drain hole, and the inner wall of the installation channel is provided with injection holes. The central control tube is rotatably installed in the installation channel and has a connecting hole. In the working state, the sealing plug is connected to the installation channel, and the connecting hole and injection holes are staggered along the circumference of the central control tube. When the oil pan needs cleaning, the sealing plug is removed, the rotating tool is inserted into the installation channel and connected to the central control tube, and the rotating tool rotates to position the central control tube in a position where the connecting hole and injection hole are connected. Cleaning oil is introduced into the injection channel to flush the bottom of the oil pan body. This method thoroughly removes residue from the inside of the oil pan without disassembling it, making the operation convenient and quick, improving maintenance efficiency, and effectively solving the problem that long-term accumulation of residue can affect the lubrication effect of engine oil.

Description

Technical Field

[0001] This application belongs to the field of automotive engine technology, specifically relating to an oil pan and its usage method, and an engine. Background Technology

[0002] The oil pan is the lower part of the crankcase, also known as the lower crankcase. Its function is to seal the crankcase as an outer shell for oil storage, prevent impurities from entering, collect and store the lubricating oil flowing back from the various friction surfaces of the diesel engine, dissipate some heat, and prevent the lubricating oil from oxidizing.

[0003] During routine engine maintenance, removing the oil pan is expensive and can easily damage it, leading to leaks. Gravity is generally used to change the oil, but this method does not thoroughly clean the residue in the oil pan, and long-term accumulation can affect the lubrication effect of the oil. Summary of the Invention

[0004] To address the technical problem that existing methods of changing engine oil by gravity do not thoroughly clean the residue in the oil pan, and that long-term accumulation can affect the lubrication effect of the engine oil, this application provides an oil pan and its usage method, as well as an engine.

[0005] In a first aspect of this application, an oil pan is provided, comprising:

[0006] An oil pan body, wherein an oil drain hole is provided at the bottom of the oil pan body, and an installation channel is provided on the side of the oil pan body away from the oil drain hole, and an injection hole is provided on the inner wall of the installation channel;

[0007] A central control tube is rotatably installed in the installation channel, and a connecting hole is provided on the central control tube;

[0008] In addition, a rotating tool or a sealing plug, the rotating tool being used to connect to the central control tube and drive the central control tube to rotate, the rotating tool being provided with a conveying channel for communicating with the central control tube; and a sealing plug being used to connect to the installation channel;

[0009] in:

[0010] In the working state, the sealing plug is assembled in the installation channel, and the connecting hole and the injection hole are staggered along the circumference of the central control tube;

[0011] During oil change, the rotating tool is connected to the central control pipe, causing the central control pipe to rotate to a position where the connecting hole and the injection hole are connected. The delivery channel, the cavity of the central control pipe, the connecting hole, and the injection hole form an injection channel.

[0012] In some optional embodiments, the spray hole includes at least one first spray hole and at least two second spray holes, at least the first spray hole is disposed in the middle of the mounting channel, and at least two second spray holes are respectively located on both sides of the first spray hole, and the first spray hole and the second spray holes are located on the same generatrix of the mounting channel;

[0013] The connecting hole includes at least one first connecting hole and at least two second connecting holes. The first connecting hole is disposed between the two second connecting holes. The at least two second connecting holes are located on the same generatrix of the central control tube. The first connecting hole and the second connecting holes are staggered along the circumference of the central control tube.

[0014] In the operating state, the first connecting hole and the first injection hole are misaligned, and the second connecting hole and the second injection hole are misaligned.

[0015] In the oil change state, the second injection hole is connected to the second connecting hole, and / or the first connecting hole is connected to the first injection hole.

[0016] In some optional embodiments, the first injection hole and the second injection hole are parallel to the bottom surface of the oil pan body; the axis of the first injection hole is parallel to the axis of the second injection hole, or the axial direction of the first injection hole and the axial direction of the second injection hole are both toward the drain hole.

[0017] In some optional embodiments, at least two slag guide channels are provided at the bottom of the oil pan body, the inlet end of the slag guide channel is connected to the first injection hole or the second injection hole, and the outlet end of the slag guide channel is connected to the oil drain hole.

[0018] In some optional embodiments, the mounting channel includes a channel body, a rotating hole, and a mounting hole arranged sequentially;

[0019] The inner wall of the channel body is provided with a limiting groove along the axial direction. The limiting groove is located close to the rotating hole. One end of the outer wall of the central control tube is provided with a limiting protrusion that matches the limiting groove. In the working state, the limiting protrusion is located in the limiting groove.

[0020] The diameter of the rotating hole is set such that the limiting protrusion can rotate freely in the rotating hole, and in the oil discharge state, the limiting protrusion is located in the rotating hole;

[0021] The mounting hole is used to connect with the sealing plug.

[0022] In some optional embodiments, a limiting ring is also included; the limiting ring is disposed in the mounting hole; in the oil change state, the limiting protrusion abuts against the limiting ring.

[0023] In some optional embodiments, one end of the central control tube is provided with a connecting groove, the rotating tool includes a connecting handle and a connecting part, and the conveying channel is disposed in the handle and the connecting part; the connecting part is provided with a connecting protrusion that matches the connecting groove, and in the oil change state, the connecting part passes through the limiting ring, and the connecting protrusion engages with the connecting groove.

[0024] In some optional embodiments, the sealing plug includes a hexagonal flange, a threaded section, and a smooth section connected in sequence. The threaded section is threadedly connected to the mounting hole, and the end face of the smooth section is provided with a snap-fit ​​protrusion that matches the connecting groove.

[0025] In some optional embodiments, a vent hole is provided at the end of the central control tube away from the connecting groove, the installation channel is a tactile paving, and the blind end of the tactile paving is the end of the channel body away from the rotating hole.

[0026] In some alternative embodiments, a reset spring is also included, which is disposed in the mounting channel, and the reset spring and the rotating tool are respectively located at both ends of the central control tube.

[0027] In a second aspect of this application, an engine is provided, including the aforementioned oil pan.

[0028] In a third aspect of this application, a method of use based on the aforementioned oil pan is provided, comprising:

[0029] In the working state: the sealing plug is assembled in the installation channel, the first connecting hole and the first injection hole are misaligned, and the second connecting hole and the second injection hole are misaligned;

[0030] During oil change: Remove the sealing plug, and connect the rotating tool to the central control pipe:

[0031] The rotating tool drives the central control tube to rotate by a first preset angle, so that at least two second injection holes are connected to at least two second connecting holes, and the first connecting hole is misaligned with the first injection hole, thereby flushing the two sides of the oil pan body.

[0032] The rotating tool drives the central control tube to rotate by a second preset angle, so that the first connecting hole is connected to the first injection hole, and at least two of the second injection holes are misaligned with at least two of the second connecting holes, thus flushing the middle area of ​​the oil pan body; the second preset angle is greater than the first preset angle.

[0033] An oil pan according to one or more embodiments of this application has the following advantages over the prior art:

[0034] In operation, the sealing plug is connected to the installation channel, and the connecting hole and the injection hole are staggered along the circumference of the central control tube. When the oil pan needs to be cleaned, the sealing plug is removed, the rotating tool is inserted into the installation channel and connected to the central control tube, and the rotating tool is rotated to position the central control tube in a position where the connecting hole and the injection hole are connected. The delivery channel, the cavity of the central control tube, the connecting hole and the injection hole form an injection channel, and cleaning oil is introduced into the injection channel to flush the bottom of the oil pan body. The oil pan can be thoroughly cleaned without disassembling it, which is convenient and quick to operate, can improve maintenance efficiency, and can effectively solve the problem that long-term accumulation of residue will affect the lubrication effect of the engine oil. Attached Figure Description

[0035] Figure 1 An exploded view of the oil pan is shown in one or more embodiments of this application;

[0036] Figure 2 A perspective view of the oil pan in its working state is shown in one or more embodiments of this application;

[0037] Figure 3 The diagram shows a cross-sectional view of the oil pan body in the working state, according to one or more embodiments of this application.

[0038] Figure 4 A perspective view of the oil pan body is shown in one or more embodiments of this application;

[0039] Figure 5 A cross-sectional view of the oil pan body is shown in one or more embodiments of this application;

[0040] Figure 6 The three-dimensional representation of the central control pipe of the oil pan is shown in one or more embodiments of this application. Figure 1 ;

[0041] Figure 7 The three-dimensional representation of the central control pipe of the oil pan is shown in one or more embodiments of this application. Figure 2 ;

[0042] Figure 8 A perspective view of the sealing plug of the oil pan is shown in one or more embodiments of this application;

[0043] Figure 9 This illustration shows a schematic diagram of a rotating tool not rotating during an oil pan change, according to one or more embodiments of this application.

[0044] Figure 10 The diagram illustrates a structure in one or more embodiments of this application, where the rotating tool is not rotating and is cutting through the oil pan body during an oil change.

[0045] Figure 11 A perspective view of a rotating tool for an oil pan is shown in one or more embodiments of this application;

[0046] Figure 12 A cross-sectional view of a rotating tool for an oil pan is shown in one or more embodiments of this application;

[0047] Figure 13 This illustration shows a schematic diagram of a rotating tool rotating 90 degrees and cutting through the oil pan body during an oil pan change, in one or more embodiments of this application.

[0048] Figure 14 The diagram illustrates a structure in one or more embodiments of this application, showing a rotating tool rotating 180 degrees to cut through the oil pan body during an oil change.

[0049] Explanation of reference numerals in the attached drawings: 100-Oil pan body, 110-Drain hole, 120-Installation channel, 121-Channel body, 122-Rotation hole, 123-Installation hole, 124-Limiting groove, 130-Injection hole, 131-First injection hole, 132-Second injection hole, 140-Slag guide channel; 200-Central control pipe, 210-Connecting hole, 211-First connecting hole, 212-Second connecting hole, 220-Limiting protrusion, 230-Connecting groove, 240-Ventilation hole; 300-Rotating tool, 301-Conveying channel, 310-Handle, 320-Connecting part, 321-Connecting protrusion; 400-Sealing plug, 410-Hexagonal flange, 420-Screw section, 430-Smooth rod section, 431-Snap-fit ​​protrusion; 500-Limiting ring; 600-Reset spring. Detailed Implementation

[0050] To enable those skilled in the art to more clearly understand this application, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0051] Please see Figures 1-14 According to a first aspect of this application, an oil pan is provided, including an oil pan body 100, a central control pipe 200, and a rotating tool 300 or a sealing plug 400:

[0052] The bottom of the oil pan body 100 is provided with an oil drain hole 110, and the side of the oil pan body 100 away from the oil drain hole 110 is provided with an installation channel 120. The inner wall of the installation channel 120 is provided with a spray hole 130. In this embodiment, the installation channel 120 is integrated into the oil pan body 100, and the spray hole 130 is used to spray cleaning oil into the interior of the oil pan body 100. In actual design, the installation channel 120 can be set as an external type and installed on the oil pan body 100.

[0053] The central control tube 200 is rotatably installed in the installation channel 120, and a connecting hole 210 is provided on the central control tube 200;

[0054] The rotating tool 300 is used to connect to the central control tube 200 and drive the central control tube 200 to rotate. The rotating tool 300 is provided with a conveying channel 301 for connecting the central control tube 200. The sealing plug 400 is used to connect to the installation channel 120.

[0055] in:

[0056] In the working state, the sealing plug 400 is assembled in the installation channel 120, and the connecting hole 210 and the injection hole 130 are offset along the axial direction of the central control pipe 200;

[0057] In the oil change state, the rotating tool 300 is connected to the central control pipe 200 so that the central control pipe 200 is rotated to the position where the connecting hole 210 and the injection hole 130 are connected. The delivery channel 301, the cavity of the central control pipe 200, the connecting hole 210 and the injection hole 130 form an injection channel.

[0058] In the oil pan provided in this embodiment, the sealing plug 400 is connected to the installation channel 120 in the working state, and the connecting hole 210 and the spray hole 130 are staggered along the circumference of the central control tube 200. When the oil pan needs to be cleaned, the sealing plug 400 is removed, the rotating tool 300 is inserted into the installation channel 120 and connected to the central control tube 200, and the rotating tool 300 is rotated so that the central control tube 200 is in the position where the connecting hole 210 and the spray hole 130 are connected. The conveying channel 301, the cavity of the central control tube 200, the connecting hole 210 and the spray hole 130 form a spray channel. Cleaning oil is introduced into the spray channel to flush the bottom of the oil pan body 100. The residue inside the oil pan can be thoroughly removed without disassembling the oil pan. The operation is convenient and quick, which can improve maintenance efficiency and effectively solve the problem that the long-term accumulation of residue will affect the lubrication effect of the engine oil.

[0059] In some optional embodiments, the injection hole 130 includes at least one first injection hole 131 and at least two second injection holes 132. At least the first injection hole 131 is disposed in the middle of the mounting channel 120, and at least two second injection holes 132 are respectively located on both sides of the first injection hole 131. The first injection hole 131 and the second injection hole 132 are located on the same generatrix of the mounting channel 120, that is, the axis of the first injection hole 131 and the axis of the second injection hole 132 are located in the same plane, and the axial direction of the first injection hole 131 and the axial direction of the second injection hole 132 face the same side.

[0060] The connecting hole 210 includes at least one first connecting hole 211 and at least two second connecting holes 212. The first connecting hole 211 is disposed between the two second connecting holes 212. The at least two second connecting holes 212 are located on the same generatrix of the central control pipe 200. The first connecting hole 211 and the second connecting hole 212 are staggered along the circumference of the central control pipe 200. In this embodiment, the angle between the first connecting hole 211 and the second connecting hole 212 along the circumference of the central control pipe 200 is 90 degrees. Of course, the actual angle value can be set as needed. The two second connecting holes 212 being located on the same generatrix of the central control pipe 200 specifically means that the axes of the two second connecting holes 212 are located in the same plane and the axial directions of the two second connecting holes 212 are facing the same side.

[0061] In the working state, the first connecting hole 211 and the first injection hole 131 are misaligned, and the second connecting hole 212 and the second injection hole 132 are misaligned.

[0062] During oil change, the second injection hole 132 is connected to the second connecting hole 212 to spray and remove slag from the two sides of the bottom of the oil pan body 100; or, the first connecting hole 211 is connected to the first injection hole 131 to spray and remove slag from the middle area of ​​the oil pan body 100; of course, the second injection hole 132 and the second connecting hole 212 can be connected, and the first connecting hole 211 and the first injection hole 131 can be connected at the same time to spray and remove slag from the two sides and the middle area of ​​the bottom of the oil pan body 100.

[0063] In this embodiment, the first injection hole 131 can be configured as an elongated waist-shaped hole, and the second injection hole 132 is configured as a conventional O-shaped hole. The shape of the first connecting hole 211 is adapted to the shape of the first injection hole 131, and the shape of the second connecting hole 212 is adapted to the shape of the second injection hole 132. In the working state, the first connecting hole 211 and the first injection hole 131 are misaligned, and the second connecting hole 212 and the second injection hole 132 are misaligned, so that the oil in the oil pan will not flow out from the installation channel 120, and the residue in the oil will not enter the installation channel 120, thus affecting the use of the subsequent rotating tool 300 and the installation connection of the installation channel 120 with other components. In the oil change state, the second injection hole 132 is connected to the second connecting hole 212, and / or the first connecting hole 211 is connected to the first injection hole 131, so that cleaning oil can be sprayed into the interior of the oil pan body 100, so that the residue at the bottom of the oil pan body 100 is transferred to the drain hole 110 and discharged together with the cleaning oil through the drain hole 110.

[0064] In some optional embodiments, the first injection hole 131 and the second injection hole 132 are parallel to the bottom surface of the oil pan body 100; the axis of the first injection hole 131 is parallel to the axis of the second injection hole 132. By making the axis of the first injection hole 131 parallel to the axis of the second injection hole 132, the first injection hole 131 and the second injection hole 132 can be set at a certain interval. After the cleaning oil sprayed from the first injection hole 131 and the second injection hole 132 reaches the other side of the oil pan body 100, it converges and is discharged from the drain hole 110. This allows for uniform spraying of the oil pan body 100, uniform slag removal in each area, and improved slag removal effect.

[0065] In some alternative embodiments, the first injection hole 131 and the second injection hole 132 are parallel to the bottom surface of the oil pan body 100; the axial direction of the first injection hole 131 and the axial direction of the second injection hole 132 are both directed toward the drain hole 110. Since the axial direction of the first injection hole 131 and the axial direction of the second injection hole 132 are both directed toward the drain hole 110, the cleaning oil sprayed from the first injection hole 131 and the second injection hole 132 directly converges into the drain hole 110 for discharge, which can quickly transfer residues to the drain hole 110 and improve slag removal efficiency.

[0066] In practical use, the first spray hole 131 and the second spray hole 132 can be sprayed obliquely downwards onto the bottom surface of the oil pan body 100, increasing the flushing force of the sprayed cleaning oil on the residue, improving the spraying slag removal effect, and improving the reliability of the device.

[0067] In some optional embodiments, at least two slag guide channels 140 are provided at the bottom of the oil pan body 100. The inlet end of the slag guide channel 140 is connected to the first injection hole 131 or the second injection hole 132, and the outlet end of the slag guide channel 140 is connected to the drain hole 110. In some specific embodiments, two slag guide channels 140 can be provided, with the inlet ends of the two slag guide channels 140 respectively connected to the two second injection holes 132. The two slag guide channels 140 are arranged in a V-shape. Alternatively, the two slag guide channels 140 are respectively connected to one second injection hole 132 and one injection hole 131. In other specific embodiments, three slag guide channels 140 can be provided, with two slag guide channels 140 respectively connected to the two second injection holes 132 and one slag guide channel 140 connected to the first injection hole 131. The three slag guide channels 140 can be arranged in parallel, and the cleaning oil flows out from the outlet end and converges to the drain hole 110 for discharge.

[0068] In some further optional embodiments, the number of slag guide channels 140 is not greater than the total number of the first injection holes 131 and the second injection holes 132. The number of slag guide channels 140 may be equal to the total number of the first injection holes 131 and the second injection holes 132, and the slag guide channels 140 are connected to the first injection holes 131 and the second injection holes 132 in a one-to-one correspondence; the number of slag guide channels 140 may be less than the total number of the first injection holes 131 and the second injection holes 132, and the slag guide channels 140 are connected to a portion of the first injection holes 131 and the second injection holes 132.

[0069] In some optional embodiments, the mounting channel 120 includes a channel body 121, a rotating hole 122, and a mounting hole 123 arranged sequentially.

[0070] The inner wall of the channel body 121 is provided with a limiting groove 124 along the axial direction. The limiting groove 124 is located near the rotating hole 122. One end of the outer wall of the central control tube 200 is provided with a limiting protrusion 220 that matches the limiting groove 124. In the working state, the limiting protrusion 220 is located in the limiting groove 124, the central control tube 200 cannot rotate, and the first connecting hole 211 and the first spray hole 131 are misaligned, and the second connecting hole 212 and the second spray hole 132 are misaligned.

[0071] The diameter of the rotating hole 122 is set so that the limiting protrusion 220 can rotate freely in the rotating hole 122. In the oil discharge state, the limiting protrusion 220 is located in the rotating hole 122. The rotating tool 300 can drive the central control tube 200 to rotate, so that the central control tube 200 rotates to the position where the connecting hole 210 and the injection hole 130 are connected.

[0072] Mounting hole 123 is used to connect with sealing plug 400. Sealing plug 400 can be a screw plug, which is threaded into mounting hole 123; sealing plug 400 can also be a rubber plug, which is interference-fitted into mounting hole 123 to achieve a seal.

[0073] In some optional embodiments, the oil pan further includes a limiting ring 500; the limiting ring 500 is disposed in the mounting hole 123; in the oil change state, the limiting protrusion 220 abuts against the limiting ring 500. In the oil change state, the limiting ring 500 abuts against the limiting protrusion 220 to position the limiting protrusion 220, so that the axis of the first connecting hole 211 and the axis of the first injection hole 131 are in the same plane, and the axis of the second connecting hole 212 and the axis of the second injection hole 132 are in the same plane. By rotating a certain angle, at least one of them can be connected; the limiting ring 500 is connected to the mounting hole 123 near the rotating hole 122, and the end face of the rotating hole 122 can also position the limiting ring 500. In this embodiment, the limiting ring 500 and the mounting hole 123 are connected by threads. In other embodiments, the limiting ring 500 and the mounting hole 123 can also be connected by key connection, pin connection, or other connection methods to achieve the fixation of the limiting ring 500 and the mounting hole 123. The end of the limiting ring 500 away from the limiting protrusion 220 is provided with an "I"-shaped mounting groove for installation and removal.

[0074] In some optional embodiments, one end of the central control tube 200 is provided with a connecting groove 230. The rotating tool 300 includes a connecting handle 310 and a connecting part 320. The conveying channel 301 is disposed in the handle 310 and the connecting part 320. The connecting part 320 is provided with a connecting protrusion 321 that matches the connecting groove 230. In the oil change state, the connecting part 320 passes through the limiting ring 500, and the connecting protrusion 321 is engaged with the connecting groove 230. Specifically, the connecting part 320 is a hollow cylinder, and the outer diameter of the connecting part 320 is smaller than the inner diameter of the limiting ring 500. The connecting protrusion 321 is provided at the end of the connecting part 320 away from the handle 310. The connecting protrusion 321 is engaged with the connecting groove 230. Rotating the connecting part 320 by the handle 310 drives the central control tube 200 to rotate. In a specific design, the handle 310 and the connecting part 320 can also be set at a 90-degree angle to facilitate the rotation of the connecting part 320 by applying force through the handle 310.

[0075] In some optional embodiments, the sealing plug 400 includes a hexagonal flange 410, a threaded section 420 and a smooth section 430 connected in sequence. The threaded section 420 is threadedly connected to the mounting hole 123, and the end face of the smooth section 430 is provided with a snap-fit ​​protrusion 431 that matches the connecting groove 230. Specifically, the height of the snap-fit ​​protrusion 431 can be set to 2-3mm, and all four sides are straight-through chamfered at the root, which can form an unstable fit with the connecting groove 230. During the installation and rotation of the sealing plug 400, the pressure, friction and the snap-fit ​​protrusion 431 work together to make the central control tube 200 rotate. However, once the limiting protrusion 220 of the central control tube 200 is engaged in the limiting groove 124 of the oil pan body 100, the central control tube 200 is limited and cannot continue to rotate. Because the snap-fit ​​protrusion 431 is very low and all four sides of the protrusion are straight-through chamfered at the root, the snap-fit ​​protrusion 431 can be dislodged from the connecting groove 230. As a result, the central control tube 200 is stuck by the limiting groove 124 and cannot rotate. The sealing plug 400 continues to rotate until the sealing plug 400 is installed in place.

[0076] In some optional embodiments, a vent hole 240 is provided at the end of the central control tube 200 away from the connecting groove 230, and the mounting channel 120 is a blind path, with the blind end of the blind path being the end of the channel body 121 away from the rotating hole 122. The vent hole 240 at the end of the central control tube 200 away from the connecting groove 230 allows air to be discharged when the cleaning oil enters the spray channel, facilitating the introduction of the cleaning oil. Due to the vent hole 240, the mounting channel 120 is a blind path, preventing oil from flowing out of the mounting channel 120.

[0077] In some optional embodiments, a return spring 600 is also included. The return spring 600 is disposed in the mounting channel 120, and the return spring 600 and the rotating tool 300 are located at opposite ends of the central control tube 200. The return spring 600 is placed in the channel body 121, with one end connected to the blind end of the mounting channel 120 and the other end connected to the central control tube 200. The return spring 600 always maintains a pushing force on the central control tube 200 in the direction of the mounting hole 123, so that in the oil change state, the limiting protrusion 220 abuts against the limiting ring 500.

[0078] A second aspect of this application provides an engine including the oil pan of the first aspect embodiment.

[0079] A third aspect of this application provides a method of using an oil pan based on the first aspect embodiment, comprising:

[0080] Step S1: In the working state: The sealing plug 400 is assembled in the installation channel 120, the first connecting hole 211 and the first injection hole 131 are misaligned, and the second connecting hole 212 and the second injection hole 132 are misaligned, as follows. Figure 3 As shown;

[0081] Specifically, the screw section 420 of the sealing plug 400 is threadedly connected to the mounting hole 123 until the sealing plug 400 is installed in place. One end face of the central control tube 200 abuts against the end face of the smooth rod section 430 of the sealing plug 400, and the other end face of the central control tube 200 is limited by the return spring 600. At this time, the limiting protrusion 220 is located in the limiting groove 124, the first connecting hole 211 and the first injection hole 131 are misaligned, and the second connecting hole 212 and the second injection hole 132 are misaligned.

[0082] Step S2: Before changing the oil, open the drain plug connected to the drain hole 110 to drain the waste oil inside the oil pan body 100.

[0083] Step S3: In the oil change state: Remove the sealing plug 400. The spring force of the return spring 600 causes the central control tube 200 to move outward, and the limiting protrusion 220 exits the limiting groove 124 until the limiting protrusion 220 abuts against the limiting ring 500. At this time, the limiting protrusion 220 is located in the rotating hole 122, and the central control tube 200 can rotate freely. The rotating tool 300 is connected to the central control tube 200. Figure 10 As shown;

[0084] Step S4: The rotating tool 300 drives the central control tube 200 to rotate at a first preset angle, so that at least two second injection holes 132 are connected to at least two second connecting holes 212, and the first connecting hole 211 is misaligned with the first injection hole 131, such as... Figure 13 As shown, flush both sides of the oil pan body 100;

[0085] In step S4, the first preset angle is 90 degrees. Of course, the first preset angle can be set as needed. The cleaning oil is sprayed out from the second spray hole 132 to form a high-pressure oil jet with a long waist cone surface. The high-pressure oil jet covers both sides of the bottom surface of the oil pan body 100 and washes away the residue and sludge adhering to both sides of the bottom surface of the oil pan. The impurities washed away will flow out in a direction along the preset sludge guide groove 140 to the oil drain hole 110.

[0086] Step S5: The rotating tool 300 drives the central control tube 200 to rotate a second preset angle, so that the first connecting hole 211 is connected to the first injection hole 131, and at least two second injection holes 132 are misaligned with at least two second connecting holes 212, such as... Figure 14 As shown, the middle area of ​​the oil pan body 100 is flushed; the second preset angle is greater than the first preset angle;

[0087] In step S5, the second preset angle is 180 degrees. Of course, the second preset angle can be set as needed. The cleaning oil is sprayed out from the first spray hole 131 to form a high-pressure oil jet in the shape of a cone. The high-pressure oil jet covers the middle part of the bottom surface of the oil pan body 100, and pushes the impurities in the middle directly towards the drain hole 110, and helps to quickly discharge the impurities that were just flushed away from both sides and blocked near the drain hole 110.

[0088] Step S6: Repeat steps S4 and S5 until the cleaning oil coming out of the drain hole 110 is clear and free of residue. Then, take out the rotating tool 300, assemble the sealing plug 400 into the installation channel 120, install the drain bolt into the drain hole 110, add new engine oil to the oil pan body 100, and complete the entire oil change process.

[0089] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0090] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", and "counterclockwise" 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 this application and 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 this application.

[0091] In this application, unless otherwise expressly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0092] Furthermore, the use of terms such as "first" and "second" in this application is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0093] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. An oil pan characterized by comprising: include: An oil pan body, wherein an oil drain hole is provided at the bottom of the oil pan body, and an installation channel is provided on the side of the oil pan body away from the oil drain hole, and an injection hole is provided on the inner wall of the installation channel; A central control tube is rotatably installed in the installation channel, and a connecting hole is provided on the central control tube; In addition, a rotating tool and a sealing plug, the rotating tool being used to connect to the central control tube and drive the central control tube to rotate, the rotating tool being provided with a conveying channel for communicating with the central control tube; and a sealing plug being used to connect to the installation channel; in: In the working state, the sealing plug is assembled in the installation channel, and the connecting hole and the injection hole are staggered along the circumference of the central control tube; During oil change, the rotating tool is connected to the central control pipe, causing the central control pipe to rotate to a position where the connecting hole and the injection hole are connected. The delivery channel, the cavity of the central control pipe, the connecting hole, and the injection hole form an injection channel.

2. An oil pan according to claim 1, characterized in that The spray hole includes at least one first spray hole and at least two second spray holes. At least the first spray hole is located in the middle of the mounting channel, and at least two second spray holes are located on both sides of the first spray hole. The first spray hole and the second spray holes are located on the same generatrix of the mounting channel. The connecting hole includes at least one first connecting hole and at least two second connecting holes. The first connecting hole is disposed between the two second connecting holes. The at least two second connecting holes are located on the same generatrix of the central control tube. The first connecting hole and the second connecting holes are staggered along the circumference of the central control tube. In the operating state, the first connecting hole and the first injection hole are misaligned, and the second connecting hole and the second injection hole are misaligned. In the oil change state, the second injection hole is connected to the second connecting hole, and / or the first connecting hole is connected to the first injection hole.

3. An oil pan according to claim 2, characterized in that The first injection hole and the second injection hole are parallel to the bottom surface of the oil pan body; the axis of the first injection hole is parallel to the axis of the second injection hole, or the axial direction of the first injection hole and the axial direction of the second injection hole are both toward the drain hole.

4. The oil pan according to claim 2, characterized by The bottom of the oil pan body is provided with at least two slag guide channels. The inlet end of the slag guide channel is connected to the first injection hole or the second injection hole, and the outlet end of the slag guide channel is connected to the oil drain hole.

5. The oil pan according to claim 1, characterized by The installation channel includes a channel body, a rotating hole, and a mounting hole arranged sequentially. The inner wall of the channel body is provided with a limiting groove along the axial direction. The limiting groove is located close to the rotating hole. One end of the outer wall of the central control tube is provided with a limiting protrusion that matches the limiting groove. In the working state, the limiting protrusion is located in the limiting groove. The diameter of the rotating hole is set such that the limiting protrusion can rotate freely in the rotating hole, and in the oil change state, the limiting protrusion is located in the rotating hole; The mounting hole is used to connect with the sealing plug.

6. The oil pan according to claim 5, characterized in that, It also includes a limiting ring; the limiting ring is disposed in the mounting hole; in the oil change state, the limiting protrusion abuts against the limiting ring.

7. An oil pan according to claim 6, characterized in that One end of the central control tube is provided with a connecting groove. The rotating tool includes a connecting handle and a connecting part. The conveying channel is provided in the handle and the connecting part. The connecting part is provided with a connecting protrusion that matches the connecting groove. In the oil change state, the connecting part passes through the limiting ring, and the connecting protrusion engages with the connecting groove.

8. The oil pan according to claim 7, characterized by The sealing plug includes a hexagonal flange, a screw section, and a smooth rod section connected in sequence. The screw section is threadedly connected to the mounting hole, and the end face of the smooth rod section is provided with a snap-fit ​​protrusion that matches the connecting groove.

9. The oil pan according to claim 7, characterized by The central control tube has a vent hole at the end away from the connecting groove, and the installation channel is a tactile paving, with the blind end of the tactile paving being the end of the channel body away from the rotating hole.

10. An oil pan according to any one of claims 1-9, characterized in that It also includes a reset spring, which is disposed in the mounting channel, and the reset spring and the rotating tool are respectively located at both ends of the central control tube.

11. An engine characterized by, Includes the oil pan as described in any one of claims 1-10.

12. A method of using an oil sump according to any one of claims 2-10, characterized in that, include: In the working state: the sealing plug is assembled in the installation channel, the first connecting hole and the first injection hole are misaligned, and the second connecting hole and the second injection hole are misaligned; During oil change: Remove the sealing plug, and connect the rotating tool to the central control pipe: The rotating tool drives the central control tube to rotate by a first preset angle, so that at least two second injection holes are connected to at least two second connecting holes, and the first connecting hole is misaligned with the first injection hole, thereby flushing the two sides of the oil pan body. The rotating tool drives the central control tube to rotate by a second preset angle, so that the first connecting hole is connected to the first injection hole, and at least two of the second injection holes are misaligned with at least two of the second connecting holes, thus flushing the middle area of ​​the oil pan body; the second preset angle is greater than the first preset angle.

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