An oil sump and method of use thereof, engine

Abstract

The application discloses an oil sump, a method for using the same and an engine, wherein the oil sump comprises an oil sump body, a control pipe and a blocking plug or a moving tool, the oil sump body is provided with a mounting channel on the side far from a drain hole, and the inner wall of the mounting channel is provided with a jet hole; the control pipe is slidingly mounted in the mounting channel, and the control pipe is provided with a communication hole; in the working state, the blocking plug is connected with the mounting channel, the communication hole and the jet hole are distributed in a staggered mode along the sliding direction of the control pipe; when the oil sump needs to be cleaned, the blocking plug is removed, the moving tool is inserted into the mounting channel and the control pipe is pushed, so that the control pipe is located at the position where the communication hole and the jet hole are communicated with each other, cleaning oil is introduced into the jet channel, the bottom of the oil sump body is flushed, the residual substances in the oil sump can be completely removed without disassembling the oil sump, the operation is convenient and fast, the maintenance efficiency can be improved, and the problem that the residual substances accumulated for a long time can affect the lubricating effect of the engine oil can be solved.

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 slidably installed in the installation channel, and a connecting hole is provided on the central control tube;

[0008] And, a sealing plug or a moving tool, the sealing plug being used to connect to the installation channel; the moving tool being used to insert into the installation channel and push the central control tube to slide, the moving tool being provided with a conveying channel for communicating with the central control tube;

[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 sliding direction of the central control tube;

[0011] During oil change, the moving tool drives the central control pipe to a position where the connecting hole and the injection hole are connected, and 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 one 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 at least one first spray hole, and the first spray hole and the second spray hole 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, at least one first connecting hole is disposed between at least two second connecting holes, and the first connecting hole and the second connecting hole are located on the same generatrix of the central control pipe; the hole spacing between two adjacent second connecting holes is the same as the hole spacing between two adjacent second injection holes; the distance between the first connecting hole and the adjacent second connecting hole is different from the distance between the corresponding first injection hole and the second injection hole.

[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 first connecting hole is connected to the first injection hole; or, the second connecting hole is connected to the second 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, 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.

[0018] In some alternative embodiments, the mounting channel includes a channel body and a mounting hole, wherein the diameter of the mounting hole is larger than the diameter of the channel body;

[0019] The inner wall of the channel body is provided with a guide groove along the axial direction, and the outer wall of the central control tube is provided with a sliding protrusion, which is slidably installed in the guide groove.

[0020] The mounting hole is used to connect with the sealing plug.

[0021] In some optional embodiments, a limiting ring is also included, which is fitted into the mounting hole; in the working state, the sliding protrusion abuts against the limiting ring.

[0022] In some alternative embodiments, the moving tool includes a connected handle and a drive unit, and the delivery channel is disposed in the handle and the drive unit;

[0023] During the oil change, the drive unit passes through the limiting ring, and the end face of the drive unit abuts against the end face of the central control tube to push the central control tube into the installation channel.

[0024] In some alternative embodiments, a reset spring is also included, which is disposed in the mounting channel, and the reset spring and the limiting ring are respectively located at both ends of the central control tube.

[0025] In some alternative implementations, the central control tube is a blind tube, and the sealing or moving tool is located at the open end of the central control tube.

[0026] In a second aspect of this application, an engine is provided, including the oil pan described in the first aspect.

[0027] In a third aspect of this application, a method of using an oil pan based on the first aspect is provided, comprising the following steps:

[0028] 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;

[0029] During oil change: Remove the sealing plug, and insert the moving tool into the installation channel:

[0030] The mobile tool drive control tube moves to a position where at least two of the second injection holes are respectively connected to at least two of the second connecting holes. The first connecting hole is misaligned with the first injection hole, and the first pressure value of the spray cleaning oil is introduced into the conveying channel to spray and remove slag from both sides of the bottom of the oil pan body.

[0031] A second pressure value of spray cleaning oil is introduced into the conveying channel to push the central control pipe to the position where the first connecting hole and the first spray hole are connected. At least two of the second spray holes and at least two of the second connecting holes are misaligned to spray slag removal in the middle area at the bottom of the oil pan body. The second pressure value is greater than the first pressure value.

[0032] An oil pan according to one or more embodiments of this application has the following advantages over the prior art:

[0033] In operation, the sealing plug is connected to the installation channel, and the connecting hole and the injection hole are offset along the sliding direction of the central control tube. When the oil pan needs to be cleaned, the sealing plug is removed, the moving tool is inserted into the installation channel and the central control tube is pushed so that the central control tube is in the 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. Cleaning oil is introduced into the injection channel to flush the bottom of the oil pan body. 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. Attached Figure Description

[0034] Figure 1 An exploded view of the oil pan is shown in one or more embodiments of this application;

[0035] Figure 2 A perspective view of the oil pan in its working state is shown in one or more embodiments of this application;

[0036] 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.

[0037] Figure 4 A perspective view of the oil pan body is shown in one or more embodiments of this application;

[0038] Figure 5 A cross-sectional view of the oil pan body is shown in one or more embodiments of this application;

[0039] 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 ;

[0040] 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 ;

[0041] Figure 8 A perspective view of the sealing plug of the oil pan is shown in one or more embodiments of this application;

[0042] Figure 9 This illustration shows a schematic diagram of a movable tool inserted into a mounting hole during an oil pan change, according to one or more embodiments of this application.

[0043] Figure 10The diagram shows a cross-section of the oil pan body in one or more embodiments of this application, where the second connecting hole is connected to the second injection hole during oil pan replacement.

[0044] Figure 11 A perspective view of a tool for moving an oil pan is shown in one or more embodiments of this application;

[0045] Figure 12 A cross-sectional view of a tool for moving an oil pan is shown in one or more embodiments of this application;

[0046] Figure 13 The diagram shows a cross-section of the oil pan body in one or more embodiments of this application, where the first connecting hole and the first injection hole are connected during oil pan replacement.

[0047] Explanation of reference numerals in the attached drawings: 100-Oil pan body, 110-Drain hole, 120-Installation channel, 121-Channel body, 122-Installation hole, 123-Guide groove, 130-Injection hole, 131-First injection hole, 132-Second injection hole, 140-Slag guide groove; 200-Central control pipe, 201-Open end, 202-Blind end, 210-Connecting hole, 211-First connecting hole, 212-Second connecting hole, 220-Sliding convex strip; 300-Moving tool, 301-Conveying channel, 310-Handle, 320-Drive unit; 400-Sealing plug, 410-Hexagonal flange, 420-Screw section; 500-Limit ring; 600-Reset spring. Detailed Implementation

[0048] 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.

[0049] Please see Figures 1-13 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 sealing plug 400 or a moving tool 300.

[0050] 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 1001, 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.

[0051] The central control tube 200 is slidably installed in the installation channel 120, and a connecting hole 210 is provided on the central control tube 200;

[0052] The sealing plug 400 is used to connect to the mounting channel 120;

[0053] The moving tool 300 is used to insert into the installation channel 120 and push the central control tube 200 to slide. The moving tool 300 is provided with a delivery channel 301 for connecting the central control tube 200.

[0054] in:

[0055] 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 staggered along the sliding direction of the central control tube 200; the sliding direction of the central control tube 200 is along the axial direction of the installation channel 120.

[0056] During oil change, the moving tool 300 drives the central control pipe 200 to move 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.

[0057] 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 sliding direction of the central control tube 200. When the oil pan needs to be cleaned, the sealing plug 400 is removed, the moving tool 300 is inserted into the installation channel 120 and the central control tube 200 is pushed so that the central control tube 200 is in the position where the connecting hole 210 and the spray hole 130 are connected. The delivery 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 oil pan can be thoroughly cleaned without disassembling it. The operation is convenient and quick, which can improve maintenance efficiency and effectively solve the problem that long-term accumulation of residue will affect the lubrication effect of the engine oil.

[0058] In some optional embodiments, the spray hole 130 includes at least one first spray hole 131 and at least two second spray holes 132. The at least one first spray hole 131 is disposed in the middle of the mounting channel 120, and the at least two second spray holes 132 are respectively located on both sides of the at least one first spray hole 131. The first spray hole 131 and the second spray hole 132 are located on the same generatrix of the mounting channel 120, that is, the axis of the first spray hole 131 and the axis of the second spray hole 132 are located in the same plane, and the axial direction of the first spray hole 131 and the axial direction of the second spray hole 132 face the same side.

[0059] The connecting hole 210 includes at least one first connecting hole 211 and at least two second connecting holes 212. At least one first connecting hole 211 is disposed between at least two second connecting holes 212. The first connecting hole 211 and the second connecting hole 212 are located on the same generatrix of the central control pipe 200, that is, the axis of the first connecting hole 211 and the axis of the second connecting hole 212 are located in the same plane, and the axial direction of the first connecting hole 211 and the axial direction of the second connecting hole 212 are oriented to the same side. The hole spacing of two adjacent second connecting holes 212 is the same as the hole spacing of two adjacent second injection holes 132. The distance between the first connecting hole 211 and the adjacent second connecting hole 212 is different from the distance between the corresponding first injection hole 131 and the second injection hole 132.

[0060] 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.

[0061] During oil change, the first connecting hole 211 is connected to the first injection hole 131; or, the second connecting hole 212 is connected to the second injection hole 132.

[0062] 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 and the installation connection between the installation channel 120 and other components. In the oil change state, the second injection hole 132 is connected to the second connecting hole 212, 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.

[0063] 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.

[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 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.

[0065] In some optional embodiments, the bottom of the oil pan body 100 is provided with at least two slag guide channels 140. 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.

[0066] 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.

[0067] In some alternative embodiments, the mounting channel 120 includes a channel body 121 and a mounting hole 122, wherein the diameter of the mounting hole 122 is larger than the diameter of the channel body 121.

[0068] The inner wall of the channel body 121 is provided with a guide groove 123 along the axial direction, and the outer wall of the central control tube 200 is provided with a sliding protrusion 220. The sliding protrusion 220 is slidably installed in the guide groove 123. The guide groove 123 is elongated and extends from the end of the channel body 121 near the mounting hole 122 inward. The sliding protrusion 220 is always located in the guide groove 123. The guide groove 123 is used to guide the sliding protrusion 220 and prevent the central control tube 200 from rotating, so that the first connecting hole 211 and the first injection hole 131 are located on the same plane in the circumferential direction and face the same direction, and the second connecting hole 212 and the second injection hole 132 are located on the same plane in the circumferential direction and face the same direction.

[0069] Mounting hole 122 is used to connect with sealing plug 400. Sealing plug 400 can be a screw plug, which is threaded to mounting hole 122; sealing plug 400 can also be a rubber plug, which is interference-fitted to mounting hole 122 to achieve a seal.

[0070] In some optional embodiments, a limiting ring 500 is also included, which is fitted into the mounting hole 122. In the working state, the sliding protrusion 220 abuts against the limiting ring 500. In the working state, the limiting ring 500 abuts against the sliding protrusion 220, positioning the sliding protrusion 220 so that 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. The limiting ring 500 is connected to the mounting hole 122 near the channel body 121, and the end face of the channel body 121 can also position the limiting ring 500. In this embodiment, the limiting ring 500 and the mounting hole 122 are connected by a thread. In other embodiments, the limiting ring 500 and the mounting hole 122 can also be connected by a key connection, pin connection, or other methods, as long as the limiting ring 500 and the mounting hole 122 are fixed.

[0071] In some optional embodiments, the moving tool 300 includes a connected handle 310 and a drive unit 320, with a delivery channel 301 disposed within the handle 310 and the drive unit 320. During oil change, the drive unit 320 passes through the limiting ring 500, and its end face abuts against the end face of the central control tube 200, thereby pushing the central control tube 200 into the installation channel 120. Specifically, the drive unit 320 is a hollow cylinder, with its outer diameter smaller than the inner diameter of the limiting ring 500. The outer and inner diameters of the drive unit 320 can be set to match the outer and inner diameters of the central control tube 200, respectively. The end face of the drive unit 320 abuts against the end face of the central control tube 200, and the handle 310 pushes the drive unit 320 to move axially along the channel body 121, thereby moving the central control tube 200. In the specific design, the handle 310 and the drive unit 320 can be set at a 90-degree angle. When the handle 310 abuts against the outer wall of the oil pan body 100, the second connecting hole 212 is connected to the second injection hole 132. At this time, there is still a certain amount of space between the sliding protrusion 220 and the end of the guide groove 123.

[0072] In some optional embodiments, the sealing plug 400 includes a hexagonal flange 410 and a threaded section 420 connected in sequence, the threaded section 420 being threadedly connected to the mounting hole 122. Specifically, the threaded section 420 is screwed into the mounting hole 122 through the threaded connection until the hexagonal flange 410 abuts against the end face of the mounting hole 122, at which point the sealing plug 400 is installed in place.

[0073] In some optional embodiments, the central control tube 200 is a blind tube, with a plug 400 or a moving tool 300 located at the open end 201 of the central control tube 200. In this embodiment, since the pressure of the cleaning oil is needed to push the central control tube 200 to continue moving inward until the sliding protrusion 220 abuts against the end of the guide groove 123, and the first connecting hole 211 communicates with the first spray hole 131, the central control tube 200 is set as a blind tube, with the blind end 202 of the central control tube 200 located away from the open end 201.

[0074] In some optional embodiments, the oil pan also includes a return spring 600 disposed in the mounting channel 120, and the return spring 600 and the limiting ring 500 are located at the two ends of the central control tube 200, respectively. A return spring 600 is placed in the channel body 121. One end of the return spring 600 is connected to the end of the channel body 121 away from the mounting hole 122, and the other end is connected to the blind end 202 of the central control tube 200. The return spring 600 always maintains a pushing force on the central control tube 200 towards the mounting hole 122, so that in the working state, the sliding protrusion 220 abuts against the limiting ring 500. In the oil change state: when the second connecting hole 212 is connected to the second spray hole 132, the pushing force of the incoming cleaning oil on the central control tube 200 is less than the elastic force of the return spring 600, so that the central control tube 200 is fixed in this position; when the pushing force of the incoming cleaning oil on the central control tube 200 is greater than the elastic force of the return spring 600, the pressure of the cleaning oil pushes the central control tube 200 to continue to move inward until the sliding protrusion 220 abuts against the end of the guide groove 123. At this time, the first connecting hole 211 is connected to the first spray hole 131.

[0075] In a second aspect of this application, an engine is provided, including the oil pan of the first aspect.

[0076] In a third aspect of this application, a method of using an oil pan based on the first aspect is provided, comprising the following steps:

[0077] 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.

[0078] Specifically, in step S1, the elastic force of the return spring 600 causes the sliding protrusion 220 to abut against the limiting ring 500. The limiting ring 500 positions the sliding protrusion 220. The two ends of the central control tube 200 are limited by the return spring 600 and the limiting ring 500. The central control tube 200 is fixed in this position, so that 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. This prevents the oil in the oil pan body 100 from flowing out of the installation channel 120, and also prevents residue in the oil from entering the installation channel 120 and affecting the subsequent use of the rotating tool and the installation connection of the installation channel 120 with other components.

[0079] 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.

[0080] Step S3: During oil change: Remove the sealing plug 400, and insert the moving tool 300 into the installation channel 120.

[0081] Step S4: The moving tool 300 drives the central control pipe 200 to move to a position where at least two second injection holes 132 are respectively connected to at least two second connecting holes 212. The first connecting hole 211 is misaligned with the first injection hole 131. The first pressure value of the spray cleaning oil is introduced into the conveying channel 301 to spray and remove slag from both sides of the bottom of the oil pan body 100.

[0082] Specifically, in step S4, the drive unit 320 passes through the limiting ring 500 and abuts against the end face of the central control tube 200. The handle 310 pushes the drive unit 320 to move along the axial direction of the channel body 121, thereby driving the central control tube 200 to move until the handle 310 abuts against the outer wall of the oil pan body 100. The second connecting hole 212 is connected to the second injection hole 132. At this time, the first connecting hole 211 and the first injection hole 131 are misaligned, and there is still a certain amount of space between the sliding protrusion 220 and the end of the guide groove 123. The pushing force of the first pressure value of the cleaning oil on the central control tube 200 is less than the elastic force of the return spring 600. The cleaning oil is sprayed out from the second injection 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 directionally along the preset sludge guide groove 140 to the drain hole 110.

[0083] Step S5: Introduce the second pressure value of the spray cleaning oil into the conveying channel 301 to push the central control pipe 200 to the position where the first connecting hole 211 and the first spray hole 131 are connected. At least two second spray holes 132 and at least two second connecting holes 212 are misaligned to spray and remove slag from the middle area at the bottom of the oil pan body 100. The second pressure value is greater than the first pressure value.

[0084] In step S5, the pushing force of the cleaning oil with the second pressure value on the central control tube 200 is greater than the elastic force of the return spring 600. The pressure of the cleaning oil pushes the central control tube 200 to continue moving inward until the sliding protrusion 220 abuts against the end of the guide groove 123. The first connecting hole 211 connects with the first spray hole 131. At this time, the second spray hole 132 is misaligned with the second connecting hole 212. The cleaning oil is sprayed out from the first spray hole 131, forming 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, pushing the impurities in the middle directly towards the drain hole 110, and helping to quickly discharge the impurities that were just flushed away from both sides and blocked near the drain hole 110.

[0085] 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.

[0086] 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.

[0087] 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.

[0088] 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.

[0089] 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 in that, 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 slidably installed in the installation channel, and a connecting hole is provided on the central control tube; In addition, a sealing plug and a moving tool, the sealing plug being used to connect with the installation channel; the moving tool being used to insert into the installation channel and push the central control tube to slide, the moving tool being provided with a delivery channel for communicating with the central control tube; 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 sliding direction of the central control tube; During oil change, the mobile tool drives the central control pipe to move to a position where the connecting hole and the injection hole are connected, and the delivery channel, the cavity of the central control pipe, the connecting hole and the injection hole form an injection channel.

2. The 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 one 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 at least one first spray hole. The first spray hole and the second spray hole 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, at least one first connecting hole is disposed between at least two second connecting holes, and the first connecting hole and the second connecting hole are located on the same generatrix of the central control pipe; the hole spacing between two adjacent second connecting holes is the same as the hole spacing between two adjacent second injection holes; the distance between the first connecting hole and the adjacent second connecting hole is different from the distance between the corresponding first injection hole and the second injection hole. 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 first connecting hole is connected to the first injection hole; or, the second connecting hole is connected to the second injection hole.

3. The 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 in that, 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 in that, The mounting channel includes a channel body and a mounting hole, wherein the diameter of the mounting hole is larger than the diameter of the channel body; The inner wall of the channel body is provided with a guide groove along the axial direction, and the outer wall of the central control tube is provided with a sliding protrusion, which is slidably installed in the guide groove. 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, which is assembled in the mounting hole; in the working state, the sliding protrusion abuts against the limiting ring.

7. The oil pan according to claim 6, characterized in that, The moving tool includes a connected handle and a drive unit, and the delivery channel is disposed in the handle and the drive unit; During the oil change, the drive unit passes through the limiting ring, and the end face of the drive unit abuts against the end face of the central control tube to push the central control tube into the installation channel.

8. The oil pan according to claim 6, characterized in that, It also includes a reset spring, which is disposed in the mounting channel, and the reset spring and the limiting ring are respectively located at both ends of the central control tube.

9. The oil pan according to any one of claims 1-8, characterized in that, The central control tube is a blind tube, and the sealing or moving tool is located at the open end of the central control tube.

10. An engine, characterized in that, Includes the oil pan as described in any one of claims 1-9.

11. A method of using an oil pan based on any one of claims 2-4, characterized in that, Includes the following steps: 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 insert the moving tool into the installation channel: The mobile tool drive control tube moves to a position where at least two of the second injection holes are respectively connected to at least two of the second connecting holes. The first connecting hole is misaligned with the first injection hole, and the first pressure value of the spray cleaning oil is introduced into the conveying channel to spray and remove slag from both sides of the bottom of the oil pan body. A second pressure value of spray cleaning oil is introduced into the conveying channel to push the central control pipe to the position where the first connecting hole and the first spray hole are connected. At least two of the second spray holes and at least two of the second connecting holes are misaligned to spray slag removal in the middle area at the bottom of the oil pan body. The second pressure value is greater than the first pressure value.

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