JP2006138304A - Two-tank oil pan - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a two-tank oil pan for actualizing early temperature rise of engine oil while avoiding the overheat of the engine oil after temperature rise by accurately measuring and seizing the level of the engine oil in the oil pan. <P>SOLUTION: The two-tank oil pan 1 comprises an oil pan 2 partitioned into a first chamber 5 where a suction port 6a is arranged and a second chamber 4 with an oil separator 3 having a recessed portion 3a1. The two-tank oil pan 1 has a first chamber oil drain 11 communicating the second chamber 4 with the first chamber 5 and an oil level gage 12 having a seal portion 12a for closing the first chamber oil drain 11. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an oil pan that is provided below an engine block and stores engine oil.

  Conventionally, engine oil has been used for engine lubrication and cooling. This engine oil is stored in an oil pan provided in the lower part of the engine, and is circulated to each part of the engine by an oil pump. The engine oil that has circulated through each part of the engine is dripped into the lower oil pan. And the engine oil dripped in the oil pan is circulated to each part of the engine again by the oil pump. During this time, the engine oil receives heat from each part of the engine and cools each part. The engine oil also has a role of forming an oil film in each part of the engine to promote lubrication between the parts and preventing oxidation of the parts.

  Here, immediately after the cold start of the engine, the engine oil stored in the oil pan is cold, the viscosity is high, and it is not in a state suitable for circulating each part of the engine and lubricating each part. Therefore, immediately after the cold start, it is desired to raise the temperature of the engine oil as soon as possible so that it has an appropriate viscosity. For this purpose, the oil pan is divided into a plurality of compartments, and immediately after a cold start, the engine oil in one compartment is easily circulated, and the engine oil in this compartment is heated earlier, After warming-up is complete, it has already been studied to avoid overheating of the engine oil and make the engine oil in a preferable state (Patent Document 1). Such an early temperature rise of engine oil contributes to an improvement in fuel efficiency due to an early reduction of friction, and improvement is also desired from the recent strong demand for improvement in fuel efficiency.

  FIG. 1 is a cross-sectional view illustrating the structure of an oil pan 50 described in Patent Document 1. In order to effectively raise the temperature of engine oil, an oil pan separator 51 having a recess 51 a is placed in the oil pan 52. The oil strainer 53 is arranged so that the engine oil suction port 53a is positioned in the recess 51a, and communication holes 54 and 55 are provided in the upper and lower portions of the side wall 51a1 of the recess 51a to communicate the inside and outside of the recess 51a. Adopted. Among the communication holes 54 and 55, the communication hole 55 provided in the lower part of the side wall 51a1 of the recess 51a controls the circulation of the engine oil inside and outside the recess 51a using the viscosity change of the engine oil. Yes. That is, the diameter of the communication hole 55 is set to a small diameter, and the engine oil having a high viscosity during warm-up prevents the mixing of the engine oil inside and outside the recess 51a by utilizing the large oil resistance when passing through the communication hole 55. On the other hand, low-viscosity engine oil after completion of warm-up can pass through the communication hole 55, and the engine oil inside and outside the recess 51a is mixed. If the engine oil is mixed inside and outside the recess 51a, the temperature of the engine oil inside the recess 51a that has become hot can be lowered by the oil outside the recess 51a at a low temperature.

  On the other hand, the communication hole 54 provided in the upper part of the side wall 51a1 of the recess 51a can circulate the engine oil inside and outside the recess 51a regardless of the viscosity of the engine oil. The engine oil dropped into the pan separator 51 (inside the recess 51a) is caused to flow from the inside to the outside of the recess 51a of the oil pan separator 51. Therefore, as shown by an arrow 57, an engine oil circulation path is formed in which the engine oil flowing out from the upper portion of the recess 51a flows again into the recess 51a from the lower portion of the recess 51a according to the viscosity of the engine oil. It is designed to promote engine oil mixing and cool engine oil. The mixed engine oil is sucked up from the suction port 53a and supplied into the engine block 56 from above.

JP 2003-222012 A

However, the oil pan 50 having the structure described in Patent Document 1 has a problem that it is difficult to accurately grasp the engine oil level. In order to measure the engine oil level, an oil level gauge is generally inserted into the oil pan, and the engine oil level is grasped based on the position attached to the oil level gauge.
However, in the oil pan 50 having the structure described in Patent Document 1, the inside of the oil pan 50 is divided into the inside and outside of the recess 51a by the oil pan separator 51, and an accurate engine oil level can be obtained simply by inserting an oil level gauge. It is difficult to grasp. This is because the engine oil level may differ between the inside and outside of the recess 51a depending on the engine operating state and the engine oil state. The communication hole 55 provided in the lower part of the side wall 51a1 of the recess 51a controls the circulation of the engine oil inside and outside the recess 51a using the change in the viscosity of the engine oil as described above. For this reason, when the engine is not warmed up and the viscosity of the engine oil is high, the engine oil does not sufficiently flow inside and outside the recess 51a, and the engine oil level is slightly different inside and outside the recess 51a. Can occur.

  In such an oil pan 50, it is difficult to grasp an accurate engine oil level even if an oil level gauge is simply inserted into the inside or outside of the recess 51a.

  Accordingly, an object of the present invention is to provide a two-tank oil pan that can accurately measure and grasp the engine oil level in the oil pan.

  In order to achieve such an object, the two-tank oil pan of the present invention includes an oil pan separator that partitions into a first chamber in which a suction port is disposed and a second chamber in which the suction port is not disposed, inside the oil pan, The oil pan separator has a recess that forms the first chamber, the first chamber communicates with the interior of the engine block, and the recess has a communication hole that communicates the second chamber with the first chamber. In the two-tank oil pan, an oil having a first chamber oil drain that allows the second chamber and the first chamber to communicate with each other and having a seal portion that restricts the flow of engine oil in the first chamber oil drain A level gauge is provided.

  In such a two-tank oil pan, a level gauge guide for guiding the seal portion to the first chamber oil drain can be provided. Moreover, it can also be set as the structure provided with the level gauge guide which was the hollow body which guide | induces the said seal part to said 1st chamber oil drain, Comprising: The communicating path with said 1st chamber was formed in the said hollow body. Further, the level gauge guide may be installed along the side wall of the recess of the oil pan separator.

  In the two-tank oil pan configured as described above, it is desirable that the first chamber oil drain is disposed near the bottom of the oil pan separator.

  Further, the two-tank oil pan of the present invention has a first through hole formed in the upper portion of the recess, and the first chamber oil drain has a shape different from that of the seal portion, A gap formed when the seal portion is fitted to the one-chamber oil drain may be configured as a second communication hole for communicating the second chamber and the first chamber. In addition, it may be configured to have a first series of holes drilled in the upper part of the recess and to have a second communication hole for communicating the second chamber and the first chamber in the seal portion. .

  Further, the two-tank oil pan as described above includes a level gauge guide installed along the side wall of the oil pan separator, and is provided on the first window provided in the level gauge guide and the side wall of the oil pan separator. The first chamber oil drain is formed by the second window, and a through hole is provided in the seal portion of the oil level gauge, and the oil level gauge is rotated in the level gauge guide, so that the first chamber oil drain is formed. It can also be set as the structure which opens and closes.

  Further, in the two-tank type oil pan as described above, the level gauge guide may be configured to have an openable and closable opening facing the outside of the oil pan.

  According to the present invention, the oil pan separator is provided inside the oil pan, and the inside of the oil pan is partitioned into the second chamber and the first chamber, so that the engine oil can be raised quickly, The engine oil is provided with an oil level gauge having a first chamber oil drain for communicating the second chamber and the first chamber and having a seal portion for opening and closing the first chamber oil drain. The level can be accurately grasped.

  Hereinafter, the best mode for carrying out the present invention will be described in detail with reference to the drawings.

  First, the two-tank oil pan 1 of the present invention will be described with reference to the drawings. FIG. 2 is a cross-sectional view illustrating a schematic configuration of the two-tank oil pan 1. The two-tank oil pan 1 includes a second chamber oil drain 2a, and an oil pan separator 3 having a recess 3a is provided inside the oil pan 2 in which a drain plug 10 is attached to the second chamber oil drain 2a. ing. The recess 3 a of the oil pan separator 3 forms a first chamber 5 that communicates with the engine block 7. That is, the oil pan 2 is partitioned into a second chamber 4 and a first chamber 5 by the oil pan separator 3. A suction port 6 a of an oil strainer 6 is disposed in the first chamber 5. The side wall 3a1 of the recess 3a is provided with a first series of through holes 8 that allow the second chamber 4 and the first chamber 5 to communicate with each other. This first series of through holes 8 is preferably provided as high as possible on the side wall 3a1 of the recess 3a. In the two-tank oil pan 1 of this embodiment, the amount of engine oil stored in the second chamber 4 and the first chamber 5 Near the lower limit level. Further, a second communication hole 9 for controlling the flow of the engine oil between the second chamber 4 and the first chamber 5 using a change in the viscosity of the engine oil is provided at the lower portion of the side wall 3a1 of the recess 3a.

  The two-tank oil pan 1 has a first chamber oil drain 11 in the vicinity of the bottom of the oil pan separator 3. The diameter of the first chamber oil drain 11 is such that the engine oil can flow between the second chamber 4 and the first chamber 5 regardless of the viscosity of the engine oil in the two-tank oil pan 1. ing. Further, the two-tank oil pan 1 is provided with an oil level gauge 12 having a seal portion 12a fitted to the first chamber oil drain 11 formed on the front end side, and the seal portion 12a of the oil level gauge 12 is provided. A level gauge guide 13 for guiding to the first chamber oil drain 11 is provided. The level gauge guide 13 is a cylindrical hollow body, and a communication passage 13a with the first chamber 5 is formed on the side. FIG. 3 is an enlarged end view taken along line AA in FIG. 2, but the level gauge guide 13 is attached along the side wall 3 a 1 of the recess 3 a of the oil pan separator 3.

  The two-tank oil pan configured as described above is 1. When the engine is started, a seal portion 12a formed on the front end side of the oil level gauge 12 is fitted to the first chamber oil drain 11 as shown in FIG. In addition, the flow of engine oil between the second chamber 4 and the first chamber 5 in the first chamber oil drain 11 is blocked. When the engine is started in such a state, the oil strainer 6 sucks only the engine oil in the first chamber 5 and supplies it to the engine block 7 side for circulation. By doing so, only a small amount of engine oil in the first chamber 5 is circulated when the engine is started, so that the engine oil can be raised quickly.

  The engine oil in the first chamber 5 is sucked up by the oil strainer 6 and circulates in the engine block 7 and then returns to the first chamber 5 again. The engine oil that has returned to the first chamber 5 also flows into the second chamber 4 via the first through-hole 8, and when the temperature of the engine oil increases and the viscosity of the engine oil decreases, Engine oil flows between the second chamber 4 and the first chamber 5 through the second communication hole 9 provided in the lower portion of the side wall 3a1 of the recess 3a of the pan separator 3. That is, since the two-tank oil pan 1 includes means for communicating the second chamber 4 and the first chamber 5, the second chamber 4 and the first chamber 1 can be provided as long as the conditions such as the viscosity of the engine oil are satisfied. The engine oil level with the chamber 5 is uniform.

  However, in the two-tank oil pan 1, the engine oil level in the second chamber 4 and the first chamber 5 may be different depending on conditions. Therefore, in order to measure the engine oil level of the two-tank oil pan 1, first, the oil level gauge 12 is pulled out as shown in FIG. When the oil level gauge 12 is pulled out, the seal portion 12 a is detached from the first chamber oil drain 11, and the second chamber 4 and the first chamber 5 communicate with each other through the first chamber oil drain 11. Here, the diameter of the first chamber oil drain 11 is such that the engine oil can be circulated regardless of the viscosity of the engine oil, and the level gauge guide 13 is provided with a communication passage 13a. The engine oil level in the two chambers 4 and the first chamber 5 and the level gauge guide 13 which is a cylindrical hollow body are uniform.

  Once the oil level gauge 12 is pulled out and the engine oil level in the two-tank oil pan 1 is made uniform, the oil level gauge 12 is inserted into the level gauge guide 13 again, and the deepest part, that is, the seal part 12a is Insert until the first chamber oil drain 11 is fitted. At this time, if the seal portion 12a is applied to the upper opening of the level gauge guide 13 and the oil level gauge 12 is pushed in as it is, the seal portion 12a can be easily fitted into the first chamber oil drain 11. Then, if the oil level gauge 12 is pulled out again, the engine oil adheres to the oil level gauge 12 to an accurate position (height), and the accurate engine oil level in the two-tank oil pan 1 is grasped. Can do.

  Here, the work of pulling out the oil level gauge 12 is a work normally performed by a conventional oil level gauge. When the oil level gauge 12 is pulled out, the engine oil adhering to the memory portion is wiped off with a waste cloth. Further, after wiping off the engine oil with a waste cloth, the work of inserting the oil level gauge 12 again and pulling it out again to check the engine oil level is a work normally performed in the conventional oil level gauge. That is, the checking operation of the engine oil level in the two-tank oil pan 1 of the present embodiment is not different from the checking operation of the engine oil level in the conventional oil pan.

  Next, a second embodiment of the present invention will be described with reference to FIGS. Example 2 and Example 1 differ in the position and direction of the first chamber oil drain. The first chamber oil drain 11 in the two-tank oil pan 1 of the first embodiment is a downward opening provided near the bottom of the oil pan separator 3 as shown in FIG. On the other hand, in the second embodiment, the first chamber oil drain 15 is provided on the side wall 3a1 that forms the recess 3a of the oil pan separator 3. In addition, the oil level gauge has a different shape from the oil level gauge 12 of the first embodiment in accordance with the first chamber oil drain 15.

  Such an oil level gauge 16 includes a seal portion 16a, and a flange portion 16a1 is formed on the seal portion 16a. When the oil level gauge 16 is lowered while being guided by the level gauge guide 14, the first chamber oil drain 15 is closed. FIG. 5 is an explanatory view of the state in which the oil level gauge 16 is completely lowered as viewed from the side wall side where the level gauge guide 14 of the oil pan separator 3 is installed, and FIG. 6 is a cross-sectional view taken along line AA in FIG. As shown in the figure, the two-tank oil pan 1 of this embodiment is configured such that a gap 17 is generated even when the oil level gauge 16 is completely lowered. The gap 17 corresponds to the second communication hole 9 in the first embodiment. That is, the gap 17 has a role and a function of controlling the distribution of the engine oil between the second chamber 4 and the first chamber 5 using a change in the viscosity of the engine oil. Accordingly, when the temperature of the engine oil increases and the viscosity of the engine oil decreases, the engine oil flows between the second chamber 4 and the first chamber 5 as indicated by an arrow 18.

  As described above, the gap 17 uses the change in the viscosity of the engine oil as described above, similarly to the second communication hole 9 in the first embodiment. The engine oil in the inner chamber and the first chamber 5 is prevented from being mixed, but such oil passage resistance varies depending on the type of engine oil used. For this reason, it is desirable that the gap 17 and the diameter of the second communication hole 9 can be changed depending on the type of engine oil used.

  Therefore, in the two-tank oil pan 1 according to the second embodiment, the size of the gap 17 can be adjusted by changing the size and shape of the seal portion 16a. Here, even when the shape or the like of the seal portion 16a is changed in this way, the maximum insertion depth of the oil level gauge is constant so that the engine oil level in the two-tank oil pan 1 can be accurately measured. Yes.

  If the oil level gauge 16 is pulled up as shown in FIG. 7 from the state shown in FIGS. 5 and 6, the second chamber 4 and the first chamber 5 are not affected by the viscosity of the engine oil as indicated by an arrow 19. The engine oil can be distributed. Further, when the flange portion 16a1 of the seal portion 16a is pulled upward, the engine oil flows into the level gauge guide 14 as indicated by an arrow 20. Thereby, the engine oil level in the second chamber 4, the first chamber 5, and the level gauge guide 14 becomes uniform. Thereafter, an accurate engine oil level can be measured and grasped by the same procedure as that of the two-tank oil pan 1 of the first embodiment.

  Next, a third embodiment of the present invention will be described with reference to FIGS. FIG. 8 is a cross-sectional view illustrating the structure of the two-tank oil pan 21 of the third embodiment. The main differences between the two-tank oil pan 21 of Example 3 and the two-tank oil pan 1 of Example 1 are as follows. That is, the two-tank oil pan 1 according to the first embodiment is attached in such a manner that the level gauge guide 13 extends along the side wall 3a1 of the recess 3a of the oil pan separator 3, and the first chamber oil drain 11 is also below the level gauge guide 13. In the two-tank oil pan 21 according to the third embodiment, the first chamber oil drain 24 is provided in the bottom plate portion 23a of the oil pan separator 23, and the communication passage is disposed above the first chamber oil drain 24. A level gauge guide 27 provided with 27a is erected.

  Moreover, in the two-tank type oil pan 1 of Example 1, the shape of the seal part 12a with which the oil level gauge 12 is provided and the shape of the 1st chamber oil drain 11 correspond, The seal part 12a is used as the 1st chamber oil drain. 11, the first chamber oil drain 11 is sealed. In contrast, in the two-tank oil pan 21 of the third embodiment, the shape of the seal portion 25a included in the oil level gauge 25 and the shape of the first chamber oil drain 24 are different as shown in FIGS. When the seal portion 25 a is fitted to the first chamber oil drain 24, a gap is formed, and this gap functions as the second communication hole 26. Along with this, in the two-tank oil pan 21 of Example 3, the first series of through holes 28 corresponding to the first series of through holes 8 in the two-tank oil pan 1 of Example 1 are provided. The hole corresponding to the 2nd communicating hole 9 provided in the oil pan separator 3 in the two tank type oil pan 1 of Example 1 is not provided.

  The second communication hole 26 circulates the engine oil between the second chamber 4 and the first chamber 5 using the change in the viscosity of the engine oil in the same manner as the second communication hole 9 in the two-tank oil pan 1 of the first embodiment. It has a role to control. For this reason, it is desirable that the shape and size of the second communication hole 26 can be changed depending on the type of engine oil used. FIGS. 9 and 10 both show a state in which the seal portion 25a is fitted to the first chamber oil drain 24 and the second communication hole 26 is formed. The shape is an example, and the shape of the first chamber oil drain 24 is not limited to these shapes, and may be any shape. If an oil level gauge 25 provided with seal portions 25a having several different shapes is prepared for the shape of the first chamber oil drain 24, the second communication hole can be obtained by replacing the oil level gauge 25. The shape and size of 26 can be changed. Such replacement of the oil level gauge 25 is performed while referring to the characteristics of the engine oil being used.

  In addition, about the component same as the two-tank type oil pan 1 of Example 1, the same reference number is attached | subjected in drawing and the detailed description is abbreviate | omitted. Further, since the engine oil level measuring method itself is not different from the two-tank oil pan 1 of the first embodiment, the description of the usage method and the engine oil level measuring method is omitted.

  Next, a fourth embodiment of the present invention will be described with reference to FIG. FIG. 11 shows a state in which a seal portion 25 a provided in the oil level gauge 25 is fitted to the first chamber oil drain 24 formed in the bottom plate 23 a of the oil pan separator 23. Here, in the third embodiment, unlike the second embodiment, the shape of the first chamber oil drain 24 and the shape of the seal portion 25a are the same, and as shown in FIG. Two communication holes 25a1 are formed.

  The second communication hole 25a1 formed in the seal portion 25a in this way is the second communication hole 9 in the two-tank oil pan 1 of the first embodiment, the gap 17 in the second embodiment, and the second communication hole in the third embodiment. It has the same function and role as the hole 26. That is, it has the role of controlling the distribution of engine oil between the second chamber 4 and the first chamber 5 by utilizing the change in viscosity of the engine oil.

  Thus, by providing the second communication hole 25a1 in the seal part 25a, a plurality of oil level guides 25 having the seal part 25 in which the second communication holes 25a1 having different sizes and shapes are formed are provided. It is possible to prepare and use the oil level guide 25 suitable for the characteristics such as the viscosity of the engine oil being used.

  Even with such an oil level gauge 25, the engine oil level can be accurately measured and grasped in the same procedure as in the first embodiment.

  Next, a fifth embodiment of the present invention will be described with reference to FIGS. FIG. 12 is a cross-sectional view illustrating the structure of the two-tank oil pan 30 according to the fifth embodiment. The main differences between the two-tank oil pan 30 of Example 5 and the two-tank oil pan 1 of Example 1 are as follows.

  The level gauge guide 13 in the two-tank oil pan 1 according to the first embodiment includes a communication passage 13 a and a first chamber oil drain 11 on the lower side. The first chamber oil drain 11 is connected to the oil level gauge 12. It closes with the seal | sticker part 12a located in a front-end | tip. That is, the flow of engine oil between the second chamber 4 and the first chamber 5 is blocked by fitting the seal portion 12a.

  On the other hand, the two-tank oil pan 30 of the fifth embodiment includes a level gauge guide 32 installed along the side wall 3a1 of the oil pan separator 3 as shown in FIG. 12 and FIG. The first chamber oil drain 33 is formed by the first window 33 a provided in the level gauge guide 32 and the second window 33 b provided in the side wall 3 a 1 of the oil pan separator 3. An oil level gauge 34 as shown in FIG. 13 is inserted into and removed from such a level gauge guide 32. A through hole 35 is provided in the seal portion 34 a of the oil level gauge 34, and the positional relationship between the through hole 35 and the first chamber oil drain 33 is changed to change the space between the second chamber 4 and the first chamber 5. The oil flow is blocked.

  Hereinafter, the oil level gauge 34 and the level gauge guide 32 in the two-tank oil pan 30 will be described. 14B and 14C are both cross-sectional views taken along line AA in FIG. 14A.

  As shown in FIG. 13, the oil level gauge 34 is formed with a rubber seal 34a at the lower end, and a through hole 35 is provided in the seal 34a. Further, a protruding key 34b is formed, and an O-ring 34c for preventing oil leakage is attached.

  One level gauge guide 32 is provided with a first window 33 a, and a first chamber oil drain 33 is formed together with a second window 33 b provided on the side wall 3 a 1 of the oil pan separator 3. A keyway 32a is also provided.

  If the oil level gauge 34 is inserted into such a level gauge guide 32 and the oil level gauge 34 is rotated, the direction of the first oil drain 33 and the direction of the through hole 35 are matched as shown in FIG. The second chamber 4 and the first chamber 5 are in communication with each other, and the engine oil can be circulated between the two chambers.

  If the oil level gauge 34 is rotated so that the direction of the first oil drain 33 and the direction of the through hole 35 do not match as shown in FIG. 14C, the second chamber 4 and the first chamber 5 can be isolated and the flow of engine oil between the two chambers can be blocked.

  During normal use, the second chamber 4 and the first chamber 5 are separated from each other as shown in FIG. 14C. At this time, the key groove 32a as shown in FIG. Since 34b is engaged, the oil level gauge 34 does not fall off or vibrate. Further, the engine oil is not blown out through the level gauge guide 32 by the O-ring 34c.

  Note that a thermostat 31 is attached to the two-tank oil pan 30 shown in FIG. 12 instead of the second communication hole 9 in the two-tank oil pan 1 of the first embodiment. This thermostat 31 opens and closes according to the temperature of the oil, and controls the flow of oil between the second chamber 4 and the first chamber 5, and its function is the same as that of the second communication hole 9.

  Moreover, about the component same as the two-tank type oil pan 1 of Example 1, the same reference number is attached | subjected in drawing and the detailed description is abbreviate | omitted.

  Next, Embodiment 6 of the present invention will be described with reference to FIG. A feature of the sixteenth embodiment is that the level gauge guide 32 in the two-tank oil pan 30 of the fifth embodiment has a level gauge provided with an openable and closable opening 40a extending the lower end and facing the outside of the oil pan 2. This is a point replaced with the guide 40. A drain plug 41 is attached to the opening 40a of the level gauge guide 40 as shown in the drawing.

  By adopting such a configuration, if the drain plug 41 is removed while the oil level gauge 34 is rotated and the second chamber 4 and the first chamber 5 are in communication with each other as shown in FIG. The engine oil can be efficiently extracted from the first chamber 5 and the second chamber 4. In the case of such a configuration, the drain plug 10 provided in the two-tank oil pan 30 shown in FIG. 12 can be eliminated.

  Such a configuration can also be employed in the level gauge guide 13 in the two-tank oil pan 1 of the first embodiment shown in FIG.

  The above-described embodiments are merely examples for carrying out the present invention, and the present invention is not limited to them. Various modifications of these embodiments are within the scope of the present invention. It is apparent from the above description that various other embodiments are possible within the scope.

It is sectional drawing which shows schematic structure of the conventional 2 tank type oil pan. It is sectional drawing which shows schematic structure of the two tank type oil pan of Example 1, and shows the state which inserted the oil level gauge. FIG. 3 is an enlarged end view taken along line AA in FIG. 2. It is sectional drawing which shows schematic structure of the two tank type oil pan of Example 1, and shows the state which pulled out the oil level gauge. In the two tank type oil pan of Example 2, the explanatory view which looked at the state which lowered the oil level gauge 16 from the side wall side which installed the level gauge guide 14 of the oil pan separator 3. FIG. It is the sectional view on the AA line in FIG. It is the sectional view on the AA line which showed the state which pulls out an oil level gauge from the state shown in FIG. 6 is a cross-sectional view showing a schematic configuration of a two-tank oil pan of Example 3. FIG. It is explanatory drawing which showed a mode that a seal | sticker part was fitted to the 1st chamber oil drain, and the 2nd communicating hole was formed. Similarly, it is explanatory drawing which showed a mode that the seal | sticker part was fitted to the 1st chamber oil drain, and the 2nd communicating hole was formed. In Example 4, it is explanatory drawing which showed the state which fitted the seal part to the 1st chamber oil drain. It is sectional drawing which shows schematic structure of the two tank type oil pan of Example 5, and shows the state which pulled out the oil level gauge. FIG. 10 is a front view of an oil level gauge used for the two-tank oil pan of Example 5. (A) is sectional drawing made into the cross section in the level gauge guide part of the two tank type oil pan shown in FIG. (B) is a partial cross-sectional view along the line AA in (a), showing a state in which the first chamber and the second chamber are in communication, and (c) shows the first chamber and the second chamber; It is explanatory drawing which shows the state which isolated. It is the end elevation which looked at the keyway part of the two tank type oil pan shown in Drawing 13 from the upper part. It is explanatory drawing which made the lower end part of the level gauge guide in Example 6 the cross section.

Explanation of symbols

1, 21, 30, 50 Two-tank oil pan 2, 52 Oil pan 2a Second chamber oil drain 3, 23, 51 Oil pan separator 3a, 51a Recess 3a1 Side wall 4 Second chamber 5 First chamber 6 Strainer 6a Suction port 7 Engine block 8, 28 First communication hole 9, 26 Second communication hole 10, 41 Drain plug 11, 24, 33 First chamber oil drain 12, 16, 25 Oil level gauge 12a, 16a, 25a Seal part 13, 14, 27, 32 Level gauge guide 31 Thermostat 33a First window 33b Second window 35 Through hole

Claims (9)

An oil pan separator that partitions the first chamber in which the suction port is disposed and the second chamber in which the suction port is not disposed is provided inside the oil pan, and the oil pan separator has a recess that forms the first chamber, In the two-tank oil pan, the first chamber is communicated with the interior of the engine block, and the recess has a communication hole for communicating the second chamber and the first chamber.
An oil level gauge having a first chamber oil drain that communicates the second chamber and the first chamber and having a seal portion that restricts the flow of engine oil in the first chamber oil drain is provided. Features a two-tank oil pan. The two-tank oil pan according to claim 1,
A two-tank oil pan comprising a level gauge guide for guiding the seal portion to the first chamber oil drain. The two-tank oil pan according to claim 1,
A two-tank type comprising a hollow body for guiding the seal portion to the oil drain in the first chamber, wherein the hollow body is provided with a level gauge guide formed with a communication passage with the first chamber. Oil pan. In the two-tank oil pan according to claim 3,
A two-tank oil pan, wherein the level gauge guide is installed along a side wall of a recess of the oil pan separator. In the two-tank type oil pan according to any one of claims 1 to 4,
The two-tank oil pan is characterized in that the first chamber oil drain is disposed near the bottom of the oil pan separator. A first through hole formed in the upper portion of the recess, wherein the shape of the first chamber oil drain is different from the shape of the seal portion, and the seal portion is fitted to the first chamber oil drain. The two-tank oil pan according to any one of claims 1 to 5, wherein a gap formed when the second chamber is formed is a second communication hole that allows the second chamber and the first chamber to communicate with each other. 2. A first communication hole formed in an upper portion of the recess, and a second communication hole for communicating the second chamber and the first chamber is formed in the seal portion. The two-tank type oil pan as described in any one of thru | or 6. The two-tank oil pan according to claim 1,
A level gauge guide installed along the side wall of the oil pan separator,
The first chamber oil drain is formed by a first window provided in the level gauge guide and a second window provided in a side wall of the oil pan separator,
A two-tank oil pan characterized in that a through-hole is provided in a seal portion of the oil level gauge, and the oil level gauge is rotated in the level gauge guide to open and close the first chamber oil drain. The two-tank type oil pan according to any one of claims 2 to 8,
The two-tank oil pan, wherein the level gauge guide has an openable / closable opening facing the outside of the oil pan.

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