Upper oil pan and engine

Abstract

The upper oil pan is suitable for being connected to the bottom of a cylinder body of the engine and used for being connected with a lower oil pan to form an oil box, the upper oil pan comprises an upper oil pan body, the upper oil pan body is provided with an oil return channel, the oil return channel is used for being communicated with a coarse strainer, the coarse strainer is communicated with a crankcase, and the oil return channel is communicated with the crankcase. Oil liquid obtained after oil gas in the crankcase is separated through the coarse filter flows to the oil return channel so as to flow back to the engine oil box. And the one-way valve is mounted at the oil return channel, and the one-way valve is arranged to be in one-way conduction from the coarse filter to the engine oil box at the oil return channel. According to the upper oil pan, when the whole vehicle inclines or suddenly turns, oil can be normally returned, engine oil is prevented from flowing back into a coarse filter, and the inclination performance of the whole vehicle is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicles, in particular to an upper oil pan and an engine. Background Art

[0002] The oil pan, also known as the oil sump, is located at the bottom of the engine. Its function is to seal the crankcase as the outer shell of the oil storage tank, prevent impurities from entering, and collect and store the lubricating oil flowing back from the various friction surfaces of the engine.

[0003] The oil stored in a traditional oil pan enters the engine through the oil circulation. When the vehicle tilts or makes a sharp turn, the oil in the oil pan is at risk of entering the coarse filter through the oil return channel. Utility Model Content

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, one purpose of the utility model is to provide an upper oil pan, which can return oil normally when the whole vehicle is tilted or turns sharply, and prevent the oil from flowing back into the coarse filter, thereby improving the tilting performance of the whole vehicle.

[0005] According to the upper oil pan of the embodiment of the utility model, the upper oil pan is suitable for being connected to the bottom of the cylinder block of the engine and is used to be connected with the lower oil pan to form an oil box, and comprises: an upper oil pan body, the upper oil pan body is provided with an oil return channel, the oil return channel is used to communicate with a coarse filter, and the coarse filter is connected with a crankcase, and the oil gas in the crankcase is separated by the coarse filter and flows to the oil return channel to flow back to the oil box; a one-way valve, the one-way valve is installed at the oil return channel, and the one-way valve is arranged to conduct one-way from the coarse filter to the oil box at the oil return channel.

[0006] According to the upper oil pan of the embodiment of the utility model, a one-way valve is added to the upper oil pan to prevent the oil in the oil box from being sucked into the oil return channel and entering the coarse filter through the oil return channel when the vehicle rolls or makes a sharp turn. The oil will then enter the intercooler from the coarse filter and affect the heat dissipation of the intercooler. By arranging a one-way valve in the upper oil pan, the tilting performance of the vehicle can be improved.

[0007] According to the upper oil pan of the embodiment of the utility model, the oil return passage penetrates along the thickness direction of the upper oil pan body, and the one-way valve is located at the outlet end of the oil return passage.

[0008] According to the upper oil pan of the embodiment of the utility model, the outlet end of the oil return channel is formed with a mounting flare, and the one-way valve is located in the oil return channel with one end extending to the mounting flare.

[0009] According to the upper oil pan of the utility model embodiment, it also includes an oil partition, which is integrated with the upper oil pan body and is provided with a partition oil return hole, which is used to flow the oil leaked from the engine lubricating parts and the cooling nozzle into the oil box.

[0010] According to the upper oil pan of the embodiment of the utility model, there are multiple baffle oil return holes, and the multiple baffle oil return holes are distributed at intervals along the first direction of the upper oil pan body.

[0011] According to the upper oil pan of the embodiment of the utility model, the upper oil pan body includes a first area and a second area, the oil partition is arranged in the first area, the second area is provided with a baffle, and a plurality of reinforcing columns are provided at the connection between the oil partition and the baffle, and the plurality of reinforcing columns are distributed one-to-one with the plurality of partition oil return holes.

[0012] According to the upper oil pan of the embodiment of the utility model, the upper oil pan body is integrated with an oil filter seat, and the oil filter seat is used to install an oil filter.

[0013] According to the upper oil pan of the embodiment of the utility model, the upper oil pan body is also provided with a main oil channel, one end of the main oil channel is connected to the oil box, and the other end is connected to the crankcase through the oil filter.

[0014] According to the upper oil pan of the embodiment of the utility model, the upper oil pan body is provided with an oil dipstick installation channel, and the oil dipstick installation channel is used for passing the oil dipstick.

[0015] The utility model also discloses an engine, including the upper oil pan. The engine and the upper oil pan have the same advantages over the prior art, which will not be described in detail here.

[0016] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0018] Figure 1 This is a schematic structural diagram of an upper oil pan according to an embodiment of the utility model;

[0019] Figure 2 It is a three-dimensional diagram of the upper oil pan of the embodiment of the utility model;

[0020] Figure 3 It is an embodiment of the utility model Figure 1Rear view of

[0021] Figure 4 It is a schematic diagram of an upper oil pan connected to an engine cylinder block according to an embodiment of the utility model;

[0022] Reference numerals:

[0023] Upper oil pan body 1, oil return channel 2, installation expansion port 21, partition oil return hole 3, reinforcement column 4, oil dipstick installation channel 5, main channel inlet 6, first channel 61, oil filter seat 7, second channel 8, third channel 9, fourth channel 10, baffle 11, oil partition 12, coarse filter oil chamber 13, first area 14, second area 15. DETAILED DESCRIPTION

[0024] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0025] Reference below Figure 1-Figure 4 Description: According to the upper oil pan of the embodiment of the utility model, when the whole vehicle is tilted or turns sharply, the oil can be returned normally and the oil can be prevented from flowing back into the coarse filter, thereby preventing the oil entering the coarse filter from entering the intercooler from the coarse filter. When the oil enters the intercooler, more oil enters the intake system from the intercooler and creates the risk of knock. That is to say, such a design of the embodiment of the utility model can indirectly prevent engine knock and also improve the tilting performance of the whole vehicle.

[0026] Reference below Figure 1-Figure 4 The upper oil pan according to the embodiment of the utility model is described. The upper oil pan is suitable for being connected to the bottom of the cylinder block of the engine and is used to be connected with the lower oil pan to form an oil box, and comprises: an upper oil pan body 1 and a one-way valve.

[0027] Among them, the upper oil pan body 1 is provided with an oil return channel 2, which is used to communicate with the coarse filter, and the coarse filter is connected to the crankcase. The oil gas in the crankcase is separated by the coarse filter and flows to the oil return channel 2 to return to the oil box. The one-way valve is installed at the oil return channel 2, and the one-way valve is set to unidirectionally conduct from the coarse filter to the oil box at the oil return channel 2.

[0028] In practice, a first connection portion may be provided on one side of the upper oil pan body 1, and a second connection portion may be provided on the side of the lower oil pan body 1 opposite to the upper oil pan body 1. The structure of the lower oil pan body may be a cavity structure. The upper oil pan body 1 and the lower oil pan body are connected to form an oil box. The utility model mainly describes an upper oil pan body 1 of an engine. The upper oil pan body 1 of the engine is connected to the engine cylinder block; and the coarse filter is arranged on the engine cylinder block. The coarse filter is connected to the oil return channel 2 of the upper oil pan body 1. The passage is also connected to the intercooler, and the function of the intercooler is to reduce the temperature of the gas entering the engine. When the embodiment of the utility model is working, the oil and gas in the engine crankcase enter the coarse filter, and the oil separated by the coarse filter is located in the coarse filter oil chamber 13 and flows into the oil box along the cylinder oil return channel 2, and the gas separated by the coarse filter enters the intercooler, and then enters the engine's intake system after passing through the intercooler. The oil box is used to store the oil and can transport the oil to various lubrication structures of the engine under the action of external force.

[0029] Specifically, in Figure 1 and Figure 2 After the one-way valve is provided in the oil return channel 2, the oil passing through the coarse filter can only flow to the oil return channel 2 and enter the oil box in one direction. When the vehicle tilts or makes a sharp turn, the oil in the oil box can be prevented from flowing back to the oil return channel 2. If the oil flows back to the oil return channel 2, it will enter the coarse filter oil chamber 13 from the oil return channel 2. Since the coarse filter is also connected to the intercooler, it will enter the intercooler through the coarse filter oil chamber 13 and enter the engine's intake system along with the intercooler. When the engine intake system contains more oil, it may cause engine knock. Engine knock will reduce the engine power and increase the temperature. In the most serious cases, it will cause cylinder knocking, engine stalling and damage to the mechanical parts of the engine.

[0030] Therefore, the embodiment of the utility model installs the one-way valve at the oil return channel 2, and the one-way valve is set to be unidirectional from the coarse filter to the oil box at the oil return channel 2, which not only facilitates the oil flowing out of the coarse filter to enter the oil box, but also prevents the oil in the oil box from flowing back to the oil return channel 2 and then returning to the coarse filter and the intercooler to affect the engine intake, and can also improve the vehicle's tilting performance.

[0031] In some embodiments, the oil return passage 2 penetrates along the thickness direction of the upper oil pan body 1 , and the one-way valve is located at the outlet end of the oil return passage 2 .

[0032] That is to say, the one-way valve is arranged near the oil in the oil box so that the oil can pass through the coarse filter into the oil return channel 2 and then into the oil box. However, when the oil in the oil box encounters fluctuations due to external forces, it can be directly blocked by the one-way valve and will not enter the engine cylinder part connected to the oil return channel 2, thereby improving the storage efficiency of the oil and preventing the oil from entering the coarse filter.

[0033] In some embodiments, a mounting expansion port 21 is formed at the outlet end of the oil return channel 2 , and the one-way valve is located in the oil return channel 2 with one end extending to the mounting expansion port 21 .

[0034] In practice, by providing an installation flare 21 at the outlet end of the return oil channel 2, that is, the end of the return oil channel 2 close to the inside of the oil box is used to install the one-way valve. The installation flare 21 is more convenient for the installation of the one-way valve. At the same time, after the one-way valve is installed at the installation flare 21, the caliber of the channel in the one-way valve and the return oil channel 2 can be set to be the same or the caliber of the channel in the one-way valve is larger than the caliber of the return oil channel 2. In this way, the oil in the return oil channel 2 will not have its caliber reduced when flowing to the one-way valve due to the installation of the one-way valve, which facilitates the oil to flow back from the coarse filter to the oil box.

[0035] In some embodiments, an oil baffle 12 is also included. The oil baffle 12 is integrated with the upper oil pan body 1, and the oil baffle 12 is provided with a baffle oil return hole 3. The baffle oil return hole 3 is used to flow the oil leaked from the engine lubricating parts and the cooling nozzle into the oil box.

[0036] In practice, the engine lubrication parts include crankshafts, bearings, etc. The crankshafts and bearings are related structures of the engine's crank movement, and naturally require lubrication. The lubricated oil returns to the oil box through the engine cylinder reflux channel, and the cooling nozzle is installed inside the engine cylinder for cooling the piston. The cooling nozzle is connected to the engine cylinder reflux channel. After the nozzle sprays out the oil, it hits the piston and then falls into the oil box at the bottom; the oil baffle 12 of the prior art is installed on the oil pan with bolts, that is, the oil baffle 12 and the upper oil pan body 1 are detachably connected, and when the embodiment of the utility model is connected, the oil baffle 12 and the upper oil pan body 1 are set as one body, that is, they are integrally formed during casting, and are both cast aluminum. The oil baffle 12 and the upper oil pan body 1 cast together can save the installation process of installing the oil baffle 12 separately, simplify the process, and reduce the cost.

[0037] Moreover, the partition oil return hole 3 is used to direct the oil leaked from the crankshaft, bearing and cooling nozzle to the oil box. In practice, the oil in the oil box is pumped to various lubrication parts of the engine by a pump. In the process of lubricating the various lubrication parts, some oil will also leak through the crankshaft, bearing and cooling nozzle. At this time, the leaked oil will flow into the oil box through the partition oil return hole 3 to make the oil recyclable. That is to say, the oil leaked from the crankshaft, bearing and cooling nozzle all returns to the oil box through the partition oil return hole 3.

[0038] In some embodiments, there are multiple partition plate oil return holes 3 , and the multiple partition plate oil return holes 3 are distributed at intervals along the first direction of the upper oil pan body 1 .

[0039] Specifically, the partition plate oil return hole 3 is set to be multiple. First, the oil leaked from the crankshaft, bearing and cooling nozzle can come from different positions. By setting multiple partition plate oil return holes 3, the oil leaked from the crankshaft, bearing and cooling nozzle can flow into the oil box through multiple partition plate return holes respectively, which improves the oil return efficiency, and the oil leaked from the crankshaft, bearing and cooling nozzle will not be concentrated in a certain area between the upper oil pan and the engine cylinder block. Furthermore, the partition plate oil return hole 3 can be set to be long strip, so that the partition plate oil return hole 3 is set larger to further improve the oil return efficiency.

[0040] The utility model embodiment of the partition plate oil return hole 3 is set to three, and the three partition plate oil return holes 3 are spaced apart and distributed along the first direction, and the first direction refers to Figure 1 In the up and down directions, it can satisfy the requirement of returning the oil leaked from the crankshaft, bearing and cooling nozzle to the oil box while satisfying the strength requirement of the oil partition 12, and separating the oil in the oil box from the engine cylinder block so that the crank-connecting rod mechanism of the engine can be separated from the oil inside the oil box. At this time, the crank arm of the crankshaft will not be immersed in the oil, thus avoiding the possibility of foaming of the oil when the engine speed is high. Therefore, the partition oil return hole 3 provided on the oil partition 12 can satisfy the requirement that the crank arm of the crankshaft will not be immersed in the oil and can ensure a good reflux effect. Of course, if other holes are provided on the oil partition 12, it is only necessary to satisfy the requirement that the crank arm of the crankshaft will not be immersed in the oil.

[0041] In some embodiments, the upper oil pan body 1 includes a first area 14 and a second area 15, the oil partition 12 is arranged in the first area 14, the second area 15 is provided with a baffle 11, and a plurality of reinforcing columns 4 are provided at the connection between the oil partition 12 and the baffle 11, and the plurality of reinforcing columns 4 are distributed one-to-one with the plurality of partition oil return holes 3.

[0042] That is to say, the oil partition 12 and the baffle 11 of the first area 14 and the second area 15 are cast as one piece, which reduces the steps of setting the oil partition 12, so that the oil partition 12 can not only play the role of the original oil partition 12 in separating the engine cylinder block from the oil in the oil box, but also make the oil partition 12 a part of the upper oil pan, and a partition oil return hole 3 is provided in the oil partition 12 to communicate with the inside of the oil box, so that the oil in the engine cylinder block is connected with the inside of the oil box, thereby meeting the oil circuit requirements and saving the manufacturing cost.

[0043] In addition, a plurality of reinforcing columns 4 are provided at the connection between the oil partition 12 and the baffle 11, and the plurality of reinforcing columns 4 are arranged at a plurality of partition oil return holes 3, so as to improve the strength around the partition oil return holes 3 and reduce deformation at the partition oil return holes 3.

[0044] In some embodiments, the upper oil pan body 1 is integrated with an oil filter seat 7, and the oil filter seat 7 is used to install an oil filter.

[0045] Specifically, the oil filter seat 7 is integrated with the outside of the upper oil pan body 1, and an oil filter is installed. The function of the oil filter is to filter out some mechanical impurities and colloids in the oil, improve the purity of the oil, and reduce the impurities in the oil that cause friction between engine parts, resulting in reduced lubrication effect and wear of engine parts. Therefore, the oil filter seat 7 is integrated with the upper oil pan body 1 as a whole, eliminating the need to set a sealing gasket between the oil filter seat 7 and the upper oil pan body 1, thereby reducing the risk of oil leakage.

[0046] In some embodiments, the upper oil pan body 1 is further provided with a main oil passage, one end of which is connected to the oil box, and the other end of which is connected to the crankcase through an oil filter.

[0047] First of all, the engine oil has been filled into the oil box. When filling, it is added at the top and, affected by gravity, enters the oil box through the lubrication system return channel in the engine cylinder block, such as the partition plate oil return hole 3. When entering the oil box, it is equivalent to the oil box being used to receive the engine oil entering from the lubrication system return channel of the engine cylinder block. Therefore, the engine oil is filtered and transported to the lubrication system only when there is oil in the oil box.

[0048] In practice, refer to Figure 2 As shown, the main oil channel includes a first channel 61, a second channel 8, a third channel 9 and a fourth channel 10. The oil in the oil box is sucked from the oil box by a collector and an oil pump. This step is not shown in the figure and is a relatively mature operation. Then it begins to enter the main channel inlet 6, and enters the first channel 61 from the main channel inlet 6, enters the interior of the filter through the first channel 61, and further flows from the interior of the filter to the second channel 8, the third channel 9 and the fourth channel 10, and flows from the fourth channel 10 to the engine cylinder body and then to the various lubrication structures of the engine, such as the lubrication of the structure in the crankcase. That is to say, the oil needs to be filtered through the oil filter before entering each lubrication system to improve the purity of the oil and reduce the impurities in the oil that cause friction of engine components, resulting in reduced lubrication effect and wear of engine components.

[0049] In some embodiments, the upper oil pan body 1 is provided with an oil dipstick installation channel 5, and the oil dipstick installation channel 5 is used to pass the oil dipstick.

[0050] In practice, the function of the oil dipstick is to measure the height of the static page of the oil, thereby reflecting whether the engine oil reserve is within a reasonable range. Conventional oil dipsticks will have obvious upper and lower limits. Just ensure that the detected oil level is between the upper and lower limits. The oil dipstick enters the oil box through the oil dipstick installation channel 5 and measures the oil level in the oil box. The oil status can be checked to prevent malfunctions.

[0051] The embodiment of the utility model discloses an engine, including the above-mentioned upper oil pan. When the whole vehicle is tilted or turns sharply, the oil can be returned normally and the oil can be prevented from flowing back into the coarse filter, thereby improving the tilting performance of the whole vehicle, and further preventing the oil entering the coarse filter from entering the intercooler from the coarse filter. When the oil enters the intercooler, more oil enters the intake system from the intercooler and creates the risk of knock. That is to say, the design of the embodiment of the utility model can indirectly prevent engine knock and reduce engine failures, while also improving the tilting performance of the whole vehicle.

[0052] 1. In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation to the present invention.

[0053] 2. In the description of the present utility model, "first feature" and "second feature" may include one or more of these features.

[0054] 3. In the description of this utility model, "plurality" means two or more.

[0055] 4. In the description of the present invention, a first feature “above” or “below” a second feature may include that the first and second features are directly in contact, or may include that the first and second features are not in direct contact but are in contact via another feature between them.

[0056] 5. In the description of the present utility model, the first feature “above”, “above” and “on” the second feature includes the first feature being directly above and diagonally above the second feature, or simply means that the first feature is horizontally higher than the second feature.

[0057] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0058] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. An upper oil pan, characterized in that: The upper oil pan is suitable for being connected to the bottom of the cylinder block of the engine and is used to be connected with the lower oil pan to form an oil box, and comprises: An upper oil pan body, wherein the upper oil pan body is provided with an oil return passage, wherein the oil return passage is used to communicate with a coarse filter, and the coarse filter is communicated with a crankcase, and the oil gas in the crankcase is separated by the coarse filter and flows to the oil return passage to flow back to the oil box; A one-way valve is installed at the oil return passage, and the one-way valve is configured to conduct one-way flow from the coarse filter to the oil box at the oil return passage.

2. The upper oil pan according to claim 1, characterized in that: The oil return passage penetrates along the thickness direction of the upper oil pan body, and the one-way valve is located at the outlet end of the oil return passage.

3. The upper oil pan according to claim 2, characterized in that: An installation expansion port is formed at the outlet end of the oil return passage, and the one-way valve is located in the oil return passage with one end extending to the installation expansion port.

4. The upper oil pan according to any one of claims 1 to 3, characterized in that: It also includes an oil baffle, which is integrated with the upper oil pan body and is provided with a baffle oil return hole, which is used to flow the oil leaked from the engine lubricating parts and the cooling nozzle into the oil box.

5. The upper oil pan according to claim 4, characterized in that: There are a plurality of partition plate oil return holes, and the plurality of partition plate oil return holes are distributed at intervals along the first direction of the upper oil pan body.

6. The upper oil pan according to claim 4, characterized in that: The upper oil pan body includes a first area and a second area, the oil partition is arranged in the first area, the second area is provided with a baffle, and a plurality of reinforcing columns are provided at the connection between the oil partition and the baffle, and the plurality of reinforcing columns are distributed one-to-one with the plurality of partition oil return holes.

7. The upper oil pan according to any one of claims 1 to 3, characterized in that: The upper oil pan body is integrated with an oil filter seat, and the oil filter seat is used to install an oil filter.

8. The upper oil pan according to claim 7, characterized in that: The upper oil pan body is also provided with a main oil passage, one end of which is connected to the oil box, and the other end of which is connected to the crankcase through the oil filter.

9. The upper oil pan according to claim 1, characterized in that: The upper oil pan body is provided with an oil dipstick installation channel, and the oil dipstick installation channel is used for passing the oil dipstick.

10. An engine, characterized in that: The invention comprises the upper oil pan as described in any one of claims 1 to 9.

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