JP2007231904A - Oil reservoir device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an oil reservoir device having a two tank type oil pan structure capable of changing oil quickly and properly. <P>SOLUTION: This oil reservoir device 130 is connected with a lower end part of a cylinder block 120. An oil pan separator 161 is stored on an inner side of the oil reservoir device 130. The oil pan separator 161 is constituted and arranged to divide a space on an inner side of the oil reservoir device 130 into a main reservoir chamber 131 and a reservoir chamber 132. A drain hole 161f is formed on a bottom plate 161a of the oil pan separator. A cantilever beam-like elastic opening and closing valve 174 is arranged to block the drain hole 161f. This elastic opening and closing valve 174 is constituted to open the drain hole 161f because it is pressed by a tip of a nozzle of an oil changing device when the nozzle is inserted into an oil level gage guide cylinder 162f. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an oil storage device configured to store oil for lubrication of a lubricated mechanism such as an engine body or an automatic transmission mechanism.

  In general, the lubricated mechanism can suck out the oil from the oil storage device and supply the oil to each lubricated member (for example, gear, camshaft, piston, etc.) disposed in the lubricated mechanism. It is configured. Further, the oil storage device is connected to the lubricated mechanism so that the oil used for lubrication in the lubricated mechanism can be recovered by the action of gravity.

A structure called a two-tank oil pan is widely known as a structure of the oil storage device that can promote the progress of warm-up operation in the lubricated mechanism. This two-tank oil pan structure is disclosed in, for example, Japanese Patent Application Laid-Open No. 2003-222012 (Patent Document 1).
JP 2003-222012 A

  In this two-tank oil pan structure, a partition plate called an inner oil pan or an oil pan separator is arranged in a space inside the oil pan capable of storing the oil. The partition plate is configured to partition the space inside the oil pan into a main chamber in which the oil suction port by the mechanism to be lubricated is disposed and a sub chamber in which the suction port is not disposed. The main chamber is formed so as to communicate with the interior of the engine block constituting the engine body. The sub chamber is formed all around (side and below) the main chamber.

  The partition plate is provided with a recess that forms the main chamber. A communication hole for communicating the main chamber and the sub chamber is formed in the recess. This communication hole is formed as a through hole having a diameter of about 2 mm through which the oil having a high viscosity at a low temperature during the warm-up operation is difficult to pass. That is, the communication hole is configured to control the alternating current of the oil between the sub chamber and the main chamber by utilizing a change in the viscosity of the oil.

  In such a configuration, the oil that has received heat in the engine body is preferentially collected in the main chamber. Thereby, the temperature of the oil in the main chamber is raised quickly. Here, for a while after the engine is cold-started, the oil in the sub chamber has a low temperature and a high viscosity. Therefore, during the warm-up operation after the cold start, the inflow of the oil from the sub chamber to the main chamber is restricted.

  That is, during the warm-up operation, the oil whose temperature has been raised early in the main chamber is preferentially circulated in the lubricated mechanism, and this oil returns to the main chamber again. Thereby, the temperature increase of the oil in the main chamber is further promoted. In this way, in the two-tank oil pan structure, the progress of the warm-up operation is effectively promoted.

  Conventionally, in the oil storage device having the above-described two-tank oil pan structure, it has been difficult to simultaneously achieve the progress of the warm-up operation and the speed of the oil change operation.

  For example, in the configuration disclosed in Japanese Patent Laid-Open No. 2003-222012 (Patent Document 1), the used oil in the sub chamber is discharged to the outside by detaching a drain bolt from the bottom of the oil pan. Is done. The oil in the main chamber once flows out into the sub chamber through the communication hole and a drain hole formed in the bottom of the partition plate, and is then discharged to the outside.

  In the above configuration, the communication hole and the drain hole are formed with a small opening diameter so that the low-temperature oil does not flow into the main chamber from the sub chamber during the warm-up operation. Therefore, it is difficult to discharge the used oil in the main chamber to the outside in a short time.

  Further, the fresh oil before use is injected into the oil storage device at a temperature considerably lower than the high temperature state after the warm-up operation ends. Therefore, it is also difficult to quickly spread the injected fresh oil before use to both the main chamber and the sub chamber through the communication hole and the drain hole.

  If the communication hole and the drain hole are formed with a relatively large opening diameter, the used oil in the main chamber is discharged to the outside in a short time. In addition, the fresh oil before use injected into the main chamber quickly flows into the sub chamber. However, in this case, during the warm-up operation, the low temperature oil in the sub chamber flows into the main chamber from the sub chamber via the communication hole and the drain hole. Therefore, in this case, the original effect of the two-tank oil pan structure that promotes the progress of the warm-up operation is greatly diminished.

  By the way, an oil changer can be used in order to change oil more quickly. This oil changer is disclosed in, for example, JP-A-6-239396. The oil changer includes a rod-like nozzle and a pump connected to the nozzle. The nozzle is configured to be inserted into an oil level gauge insertion port in the lubricated mechanism.

  The oil changer is configured so that the used oil in the oil pan can be quickly discharged by the pump through the nozzle inserted into the oil level gauge insertion port. The oil changer is configured so that fresh oil can be rapidly injected into the oil pan via the nozzle inserted into the oil level gauge insertion port.

  However, in the conventional two-tank oil pan structure as described above, the tip of the oil level gauge inserted into the oil level gauge insertion port is disposed in one of the main chamber and the sub chamber. Is done. Therefore, the tip of the nozzle inserted into the oil level gauge insertion port is also disposed on the one side of the main chamber and the sub chamber. Therefore, even when the oil changer is used, the same problem as described above occurs.

  In particular, during an oil change operation using the oil changer, the oil level rapidly drops or rises on the one side of the main chamber and the sub chamber where the nozzle is disposed. As a result, the difference in oil level between the main chamber and the sub chamber can increase rapidly. In this case, the difference in oil pressure between the inside and outside of the partition plate increases. When such a large differential pressure occurs, a large bending stress is applied to the partition plate. Therefore, the durability of the partition plate may be deteriorated.

  As described above, in the oil storage device having the conventional two-tank oil pan structure, the AC state of oil between the main chamber and the sub chamber according to the temperature of the oil in the main chamber It was difficult to perform oil change quickly and appropriately while appropriately controlling the oil pressure.

  The present invention has been made in order to solve the above-described problems, and its purpose is to provide a two-tank oil pan structure that can favorably promote the progress of warm-up operation, and to quickly and appropriately change oil. It is in providing the oil storage apparatus comprised so that it could be performed to.

  (A) In one aspect of the present invention, an oil storage device includes an oil pan, an oil pan separator, a nozzle support portion, and an elastic on-off valve. That is, the present invention is characterized in that the oil storage device includes the nozzle support portion and the elastic on-off valve.

  The oil pan is configured to be able to store the oil in an inner space. The oil pan separator is disposed in the space inside the oil pan. The oil pan separator is configured and arranged so as to divide the space into a main storage chamber and a reservoir chamber.

  Here, the main storage chamber is a space that opens toward the lubrication mechanism. The reservoir chamber is a space adjacent to the main storage chamber. Further, a drain hole is formed in the oil pan separator. The drain hole is a through hole that allows the main reservoir chamber and the reservoir chamber to communicate with each other so that the oil can exchange between the main reservoir chamber and the reservoir chamber when the oil is changed.

  The nozzle support portion is configured to support a nozzle constituting the oil discharge port and / or the injection port in the oil changer. Here, the oil changer is configured to discharge the oil in the space inside the oil pan and / or inject the oil into the space via the nozzle.

  The elastic on-off valve is provided on the oil pan separator so as to face the nozzle support portion. The elastic on-off valve is configured such that when the nozzle is supported by the nozzle support portion, the drain hole can be opened by elastically deforming by contacting the nozzle. Further, the elastic on-off valve can substantially close the drain hole by restoring the elastic deformation when the support of the nozzle by the nozzle support portion is released and the nozzle is separated. It is configured.

  Here, within the scope of the term “substantially closing the drain hole”, it is difficult for the oil at a temperature normally reachable during oil change (oil draining and oil injection) to pass through the drain hole. (Including the following). That is, for example, a case where a substantially U-shaped slit is formed in the oil pan separator, and the elastic on-off valve is configured by a cantilever-shaped portion inside the slit is within the scope of the present invention. Can be included. In this case, the drain hole is constituted by the opening formed when the elastic on-off valve is bent and the slit.

  In the oil storage device of the present invention having such a configuration, the nozzle is supported by the nozzle support portion when oil is changed using the oil changer. Then, the said nozzle contact | abuts with the said elastic on-off valve provided so that the said nozzle support part might be opposed. Thereby, the elastic on-off valve is elastically deformed and the drain hole is opened.

  On the other hand, after the oil change is finished, the nozzle support by the nozzle support part is released. Then, the nozzle is separated from the elastic on-off valve. Thereby, the elastic deformation in the elastic on-off valve is restored. The drain hole is substantially closed.

  According to such a configuration, when the oil is changed using the oil changer, the drain hole is opened only by supporting the nozzle on the nozzle support portion. Thereby, the communication between the main storage chamber and the reservoir chamber is ensured when the oil is changed. On the other hand, after the oil exchange is completed, the drain hole is substantially closed only by releasing the support of the nozzle by the nozzle support portion. Thereby, during the warm-up operation, the communication between the main storage chamber and the reservoir chamber through the drain hole can be substantially blocked.

  As described above, according to the present invention, it is possible to quickly and appropriately perform oil replacement while maintaining the original effect of the two-tank oil pan structure that promotes the progress of warm-up operation.

  -The nozzle support part may be comprised so that any one of an oil level gauge and the said nozzle can be supported alternatively. Here, the oil level gauge is configured to be able to display the oil level in the space according to the state of the oil attached to the tip portion when the tip portion is inserted into the space.

  In the oil storage device of the present invention having such a configuration, the oil level gauge is removed when oil is changed using the oil changer. That is, the support of the oil level gauge by the nozzle support portion is released. In place of the oil level gauge, the nozzle is supported by the nozzle support portion. At this time, the nozzle contacts the elastic on-off valve. Thereby, the drain hole is opened.

  On the other hand, when the oil change is completed, the nozzle is removed. That is, the support of the nozzle by the nozzle support portion is released. Thereby, the drain hole is substantially closed. Thereafter, the oil level gauge is attached. That is, the oil level gauge is supported by the nozzle support portion.

  According to such a configuration, the nozzle support part also has a function as an oil level gauge support part for supporting the oil level gauge. Thereby, the structure of the said oil storage apparatus can be simplified more.

  -The said elastic on-off valve may be provided with the tongue-like protrusion part. The projecting portion is provided so as to project toward the reservoir chamber. In addition, the protruding portion is provided to face the nozzle support portion so as to come into contact with the nozzle when the nozzle is supported by the nozzle support portion.

  In the oil storage device of the present invention having such a configuration, the nozzle is supported by the nozzle support portion when oil is changed using the oil changer. Then, the projecting portion of the elastic on-off valve provided to face the nozzle support portion comes into contact with the nozzle. Due to the contact with the nozzle, the elastic on-off valve is elastically deformed and the drain hole is opened.

  On the other hand, when the support of the nozzle by the nozzle support portion is released, the nozzle is separated from the protruding portion. Thereby, the elastic deformation in the elastic on-off valve is restored. The drain hole is substantially closed.

  According to this configuration, the opening and closing of the drain hole according to the attachment and detachment of the nozzle can be performed more reliably.

  -The said nozzle support part is comprised by the cylinder shape, and the said elastic on-off valve may be arrange | positioned so that the extension line of the central axis in the said cylinder shape may cross | intersect.

  In the oil storage device of the present invention having such a configuration, the nozzle is supported by the cylindrical nozzle support portion when oil is changed using the oil changer. Thereby, the said nozzle can be arrange | positioned along the extension line | wire of the central axis in the said cylindrical shape. The elastic on-off valve is disposed on the extended line. Therefore, when the nozzle is supported by the nozzle support portion, the elastic on-off valve comes into contact with the nozzle. Due to the contact with the nozzle, the elastic on-off valve is elastically deformed and the drain hole is opened. Therefore, according to such a configuration, the opening and closing of the drain hole according to the attachment and detachment of the nozzle can be performed more reliably.

  (B) In the other one aspect | mode of this invention, the oil storage apparatus is equipped with the said oil pan and the said oil pan separator similar to the said (A). The oil storage device further includes a guide portion and an elastic on-off valve. That is, the present invention is characterized in that the oil storage device includes the guide portion and the elastic on-off valve.

  The guide portion is configured to guide attachment / detachment of the nozzle when the nozzle in the oil changer is attached / detached to / from the oil storage device or the lubrication target mechanism.

  The elastic on-off valve is provided on the oil pan separator so as to face the guide portion. This elastic on-off valve opens the drain hole by abutting against the nozzle and elastically deforming when the nozzle is mounted on the oil storage device or the lubricated mechanism while being guided by the guide portion. Configured to get. The elastic on-off valve is configured such that when the nozzle is detached and the nozzle is separated, the elastic deformation is restored to substantially close the drain hole.

  In the oil storage device of the present invention having such a configuration, the nozzle is attached to and detached from the oil storage device or the lubricated mechanism when oil is changed using the oil changer. At this time, the attachment and detachment of the nozzle is guided by the guide portion.

  When the nozzle is attached to the oil storage device or the lubrication target mechanism, the elastic on-off valve provided to face the guide portion contacts the nozzle. Due to the contact with the nozzle, the elastic on-off valve is elastically deformed and the drain hole is opened.

  On the other hand, when the nozzle is detached from the oil storage device or the lubricated mechanism, the nozzle is separated from the elastic on-off valve. Thereby, the elastic deformation in the elastic on-off valve is restored. The drain hole is substantially closed.

  According to such a configuration, when the oil is changed using the oil changer, the drain hole is opened only by mounting the nozzle on the oil reservoir or the lubrication target mechanism. Thereby, the communication between the main storage chamber and the reservoir chamber is ensured when the oil is changed. On the other hand, after the oil exchange is completed, the drain hole is substantially closed only by removing the nozzle from the oil storage device or the lubricated mechanism. Thereby, during the warm-up operation, the communication between the main storage chamber and the reservoir chamber through the drain hole can be substantially blocked.

  As described above, according to the present invention, it is possible to quickly and appropriately perform oil replacement while maintaining the original effect of the two-tank oil pan structure that promotes the progress of warm-up operation.

  -The guide part may be comprised so that the attachment or detachment to the said oil storage apparatus or the said to-be-lubricated mechanism of the said oil level gauge can be guided.

  According to this configuration, the guide portion guides the nozzle and the oil level gauge to be attached to and detached from the oil storage device or the lubrication target mechanism. Therefore, the structure of the oil storage device can be further simplified.

  -The said elastic on-off valve may be provided with the tongue-like protrusion part. The projecting portion is provided so as to project toward the reservoir chamber.

  In the oil storage device of the present invention having such a configuration, when oil is changed using the oil change device, the nozzle is mounted on the oil storage device or the lubricated mechanism while being guided by the guide portion. The Thereby, the said protrusion part in the said elastic on-off valve contacts the said nozzle. Due to the contact with the nozzle, the elastic on-off valve is elastically deformed and the drain hole is opened.

  On the other hand, when the oil change is completed, the nozzle is detached from the oil storage device or the lubricated mechanism. Then, the nozzle is separated from the protrusion. Thereby, the elastic deformation in the elastic on-off valve is restored. The drain hole is substantially closed.

  According to this configuration, the opening and closing of the drain hole according to the attachment and detachment of the nozzle can be performed more reliably.

  -It is suitable for the said protrusion part to be provided so that it may cross | intersect the extended line which goes to the guide direction of the said nozzle from the said guide part.

  In the oil storage device of the present invention having such a configuration, the nozzle is attached to the oil storage device or the lubricated mechanism when oil is changed using the oil changer. At this time, the nozzle is guided along an extended line from the guide portion toward the guide direction of the nozzle. And the said nozzle is guided toward the said protrusion part by the said guide part.

  According to this configuration, when the nozzle is attached to the oil storage device or the lubrication target mechanism, the nozzle surely contacts the protruding portion. This ensures that the drain hole is opened.

  -The said protrusion part may be arrange | positioned facing the said guide part. At this time, the projecting portion is disposed so as to be able to contact the nozzle when the nozzle is mounted on the oil storage device or the lubricated mechanism while being guided by the guide portion.

  In the oil storage device of the present invention having such a configuration, the nozzle is attached to the oil storage device or the lubricated mechanism when oil is changed using the oil changer. At this time, the nozzle is guided toward the projecting portion by the guide portion.

  According to this configuration, when the nozzle is attached to the oil storage device or the lubrication target mechanism, the nozzle surely contacts the protruding portion. This ensures that the drain hole is opened.

  -The guide part may be comprised by the cylinder shape, and the said elastic on-off valve may be arrange | positioned so that the extension line | wire of the central axis in the said cylinder shape may cross | intersect.

  In the oil storage device of the present invention having such a configuration, the nozzle is guided to be attached to and detached from the oil storage device or the lubrication target mechanism along the central axis of the guide portion. The elastic on-off valve is disposed on the extended line in the guide direction. Therefore, when oil is exchanged using the oil exchange device, the nozzle is mounted on the oil storage device or the lubricated mechanism while being guided by the guide portion. Then, the nozzle comes into contact with the elastic on-off valve. Due to the contact with the nozzle, the elastic on-off valve is elastically deformed and the drain hole is opened. Therefore, according to such a configuration, the opening and closing of the drain hole according to the attachment and detachment of the nozzle can be performed more reliably.

  (C) In the other one aspect | mode of this invention, the oil storage apparatus is equipped with the said oil pan and the said oil pan separator similar to said (A) and (B). The oil storage device further includes a guide portion and an elastic on-off valve. That is, the present invention is characterized in that the oil storage device includes the guide portion and the elastic on-off valve.

  The guide portion is configured to support the nozzle in the oil changer. The guide portion is configured to guide the attachment / detachment of the nozzle.

  The elastic on-off valve is provided on the oil pan separator so as to face the guide portion. When the nozzle is supported while being guided by the guide portion, the elastic on-off valve is configured to be able to open the drain hole by abutting against the nozzle and elastically deforming. Further, the elastic on-off valve is configured such that the drain hole can be substantially closed by restoring the elastic deformation when the support of the nozzle by the guide portion is released and the nozzle is separated. Has been.

  In the oil storage device of the present invention having such a configuration, the nozzle is supported by the guide portion while being guided by the guide portion when oil is changed. At this time, the elastic on-off valve provided so as to face the guide portion contacts the nozzle. Due to the contact with the nozzle, the elastic on-off valve is elastically deformed and the drain hole is opened. Thereby, the communication between the main storage chamber and the reservoir chamber is ensured when the oil is changed.

  On the other hand, when the support of the nozzle by the guide portion is released, the nozzle is separated from the elastic on-off valve. The elastic deformation of the elastic on-off valve is restored by the separation of the nozzle from the elastic on-off valve. Thereby, the drain hole is substantially closed. During the warm-up operation, the communication between the main storage chamber and the reservoir chamber via the drain hole can be substantially blocked.

  As described above, according to the present invention, it is possible to quickly and appropriately perform oil replacement while maintaining the original effect of the two-tank oil pan structure that promotes the progress of warm-up operation.

  The guide portion may be configured to selectively support one of the oil level gauge and the nozzle and to guide the attachment / detachment of the oil level gauge. .

  In the oil storage device of the present invention having such a configuration, the support of the oil level gauge by the guide portion is released when oil is changed. That is, the oil level gauge is removed from the oil storage device or the lubricated mechanism while being guided by the guide portion. Then, instead of the oil level gauge, the nozzle is supported by the guide portion while being guided by the guide portion. That is, the nozzle is attached to the oil storage device or the lubricated mechanism. At this time, the nozzle contacts the elastic on-off valve. Thereby, the drain hole is opened.

  On the other hand, when the oil exchange is completed, the support of the nozzle by the guide portion is released. That is, the nozzle is removed from the oil storage device or the lubricated mechanism. Thereby, the drain hole is substantially closed. Thereafter, the oil level gauge is supported by the guide portion while being guided by the guide portion. That is, the oil level gauge is attached to the oil storage device or the lubricated mechanism.

  According to this configuration, the guide portion also has a function as an oil level gauge guide portion for guiding and supporting the oil level gauge. Therefore, the structure of the oil storage device can be further simplified.

  -The said elastic on-off valve may be provided with the tongue-like protrusion part. The projecting portion is provided so as to project toward the reservoir chamber.

  Furthermore, this protrusion part may be arrange | positioned facing the said guide part. At this time, the projecting portion is disposed so as to be able to contact the nozzle when the nozzle is supported while being guided by the guide portion.

  In the oil storage device of the present invention having such a configuration, the nozzle is supported by the guide portion while being guided by the guide portion when oil is changed using the oil change device. Thereby, the said protrusion part in the said elastic on-off valve provided so that the said guide part may be contact | abutted with the said nozzle. Due to the contact with the nozzle, the elastic on-off valve is elastically deformed and the drain hole is opened.

  On the other hand, when the oil exchange is completed, the support of the nozzle by the guide portion is released. Then, the nozzle is separated from the protrusion. Thereby, the elastic deformation in the elastic on-off valve is restored. The drain hole is substantially closed.

  According to this configuration, the opening and closing of the drain hole according to the attachment and detachment of the nozzle can be performed more reliably.

  -It is suitable for the said protrusion part to be provided so that it may cross | intersect the extended line which goes to the guide direction of the said nozzle from the said guide part.

  In the oil storage device of the present invention having such a configuration, when the oil is changed using the oil changer, the nozzle is guided along an extension line from the guide portion toward the guide direction of the nozzle, It is supported by the guide part. Thereby, the said nozzle contact | abuts reliably to the said protrusion part, and the said drain hole is open | released reliably.

  According to such a configuration, the opening and closing of the drain hole according to the attachment and detachment of the nozzle can be performed more reliably.

  -The guide part may be comprised by the cylinder shape, and the said elastic on-off valve may be arrange | positioned so that the extension line | wire of the central axis in the said cylinder shape may cross | intersect.

  In the oil storage device of the present invention having such a configuration, the nozzle is guided along the central axis of the guide portion. The elastic on-off valve is disposed on the extended line in the guide direction. Therefore, when the oil is changed using the oil changer, the nozzle is supported by the guide portion while being guided by the guide portion. Then, the nozzle comes into contact with the elastic on-off valve. Due to the contact with the nozzle, the elastic on-off valve is elastically deformed and the drain hole is opened. Therefore, according to this configuration, the drain hole can be more reliably opened and closed according to the attachment and detachment of the nozzle.

  (D) In another aspect of the present invention, an oil storage device includes an oil pan, an oil pan separator, and an elastic on-off valve. A feature of the present invention is that the oil storage device includes the elastic on-off valve.

  The oil pan is configured to be able to store the oil in an inner space. The oil pan separator is disposed in the space inside the oil pan. The oil pan separator includes a bottom plate and a side plate. A drain hole which is a through hole is formed in the bottom plate. The side plate is connected to an edge portion of the bottom plate.

  The oil pan separator is configured and arranged so as to divide the space into a main storage chamber and a reservoir chamber. The main storage chamber is configured by a space surrounded by the bottom plate and the side plate. The main storage chamber is provided so as to open toward the lubricated mechanism. The reservoir chamber is provided adjacent to the main storage chamber.

  The elastic on-off valve is provided on the bottom plate of the oil pan separator. This elastic on-off valve is configured to open the drain hole by being elastically deformed by being pressed in a predetermined direction. The elastic on-off valve is configured to substantially always close the drain hole by releasing the pressing and restoring the elastic deformation.

  In the oil storage device of the present invention having such a configuration, when the oil is changed, the drain opening is opened by the elastic on-off valve being pressed and elastically deformed in a predetermined direction. Thereby, the communication between the main storage chamber and the reservoir chamber is ensured when the oil is changed.

  The pressing of the elastic on-off valve can be performed by, for example, a differential pressure between the main storage chamber and the reservoir chamber based on a difference in oil level between the main storage chamber and the reservoir chamber. Alternatively, the pressing on the elastic on-off valve can be performed by the nozzle in the oil changer.

  Specifically, for example, oil is intensively discharged from the reservoir chamber. Thereby, the oil level of the main reservoir chamber becomes higher than the oil level of the reservoir chamber. Then, the hydraulic pressure for pressing the elastic on-off valve downward by the oil in the main storage chamber is larger than the hydraulic pressure for pressing the elastic on-off valve upward by the oil in the reservoir chamber. Become. In this case, the elastic on-off valve is pressed downward to open the drain hole. Thereby, the oil in the main storage chamber flows out to the reservoir chamber side and is discharged to the outside through the reservoir chamber.

  Alternatively, fresh oil before use is intensively injected into the main storage chamber. Thereby, the oil level of the main storage chamber becomes higher than the oil level of the reservoir chamber. Then, similarly to the above, the elastic on-off valve is pressed downward to open the drain hole. Thereby, the fresh oil before use injected into the main storage chamber is also supplied to the reservoir chamber side.

  Furthermore, the nozzle in the oil changer comes into contact with the elastic on-off valve, and the elastic on-off valve is pressed. By this pressing, the elastic on-off valve is elastically deformed. Due to this elastic deformation, the drain hole is opened.

  During the operation of the lubricated mechanism, the pressing in the predetermined direction against the elastic on-off valve as described above is released. Thereby, the drain hole is substantially closed. That is, due to the disappearance of the oil level difference such that the main reservoir chamber is higher than the reservoir chamber, or the occurrence of the oil level difference such that the reservoir chamber is higher than the main reservoir chamber. The pressing in the predetermined direction against the elastic on-off valve is released, and the drain hole is substantially closed. Thereby, during the warm-up operation, the communication between the main storage chamber and the reservoir chamber through the drain hole can be substantially blocked.

  As described above, according to the present invention, it is possible to quickly and appropriately perform oil replacement while maintaining the original effect of the two-tank oil pan structure that promotes the progress of warm-up operation.

  -The said elastic on-off valve may be provided with the tongue-like protrusion part. The projecting portion is provided so as to project outward from the bottom plate toward the reservoir chamber.

  In the oil storage device of the present invention having such a configuration, the nozzle can come into contact with the protruding portion of the elastic on-off valve when oil is changed using the oil changer. Due to the contact with the nozzle, the elastic on-off valve is elastically deformed and the drain hole is opened.

  On the other hand, when the oil change is completed, the nozzle is separated from the protrusion. Thereby, the elastic deformation in the elastic on-off valve is restored. The drain hole is substantially closed.

  According to this configuration, when the oil is changed using the oil changer, the drain hole can be more reliably opened and closed according to the attachment / detachment of the nozzle.

  The oil storage device may further include a nozzle support portion. This nozzle support part is comprised so that the said nozzle in the said oil change apparatus can be supported. And the said elastic on-off valve is arrange | positioned facing the said nozzle support part.

  In this case, the elastic on-off valve is configured to open the drain hole by abutting against the nozzle and elastically deforming when the nozzle is supported by the nozzle support portion. In addition, the elastic on-off valve is configured so that the elastic deformation is restored when the nozzle support is released and the nozzle is separated, so that the drain hole is substantially always closed. It is configured.

  In the oil storage device of the present invention having such a configuration, the nozzle is supported by the nozzle support portion when oil is changed using the oil changer. Then, the elastic on-off valve disposed so as to face the nozzle support portion comes into contact with the nozzle. Due to the contact with the nozzle, the elastic on-off valve is elastically deformed and the drain hole is opened. Thereby, the communication between the main storage chamber and the reservoir chamber is ensured when the oil is changed.

  On the other hand, when the support of the nozzle by the nozzle support portion is released after the oil exchange is completed, the nozzle is separated from the elastic on-off valve. Thereby, the elastic deformation in the elastic on-off valve is restored. The drain hole is substantially closed. Therefore, during the warm-up operation, the communication between the main storage chamber and the reservoir chamber through the drain hole can be substantially blocked.

  According to such a configuration, it is possible to quickly and appropriately change the oil while maintaining the original effect of the two-tank oil pan structure that promotes the progress of the warm-up operation.

  -The nozzle support part may be comprised so that any one of the oil level gauge and the nozzle may be supported alternatively. In this case, the elastic on-off valve is configured to substantially always block the drain hole when the oil level gauge is supported by the nozzle support portion instead of the nozzle.

  In the oil storage device of the present invention having such a configuration, when oil is changed using the oil changer, the nozzle is supported by the nozzle support instead of the oil level gauge. At this time, the nozzle contacts the elastic on-off valve. Thereby, the drain hole is opened.

  On the other hand, when the oil exchange is completed, the oil level gauge is supported by the nozzle support portion instead of the nozzle. Thereby, the drain hole is substantially closed.

  According to this configuration, the structure of the oil storage device can be further simplified.

  -The said nozzle support part is comprised by the cylinder shape, and the said elastic on-off valve may be arrange | positioned so that the extension line of the central axis in the said cylinder shape may cross | intersect.

  In the oil storage device of the present invention having such a configuration, the nozzle is supported by the cylindrical nozzle support portion when oil is changed using the oil changer. Thereby, the said nozzle can be arrange | positioned along the extension line | wire of the central axis in the said cylindrical shape. The elastic on-off valve is disposed on the extended line. Therefore, when the nozzle is supported by the nozzle support portion, the elastic on-off valve comes into contact with the nozzle. Due to the contact with the nozzle, the elastic on-off valve is elastically deformed and the drain hole is opened.

  According to such a configuration, the opening and closing of the drain hole according to the attachment and detachment of the nozzle can be performed more reliably.

  The projecting portion may be provided to face the nozzle support portion so as to come into contact with the nozzle when the nozzle is supported by the nozzle support portion.

  In the oil storage device of the present invention having such a configuration, the nozzle is supported by the nozzle support portion when oil is changed using the oil changer. Then, the projecting portion of the elastic on-off valve provided to face the nozzle support portion comes into contact with the nozzle. Due to the contact with the nozzle, the elastic on-off valve is elastically deformed and the drain hole is opened.

  According to this configuration, the opening and closing of the drain hole according to the attachment and detachment of the nozzle can be performed more reliably.

  The oil storage device may further include a guide part. The guide portion is configured to guide the attachment / detachment of the nozzle when the nozzle is attached / detached to / from the oil storage device or the lubrication target mechanism. Or this guide part is comprised so that the said nozzle can be supported. And the said elastic on-off valve is arrange | positioned facing the said guide part.

  In this case, when the nozzle is mounted on the oil storage device or the lubrication target mechanism while being guided by the guide portion, the elastic on-off valve abuts on the nozzle and is elastically deformed, whereby the drain hole Is configured to be open. The elastic on-off valve is configured to substantially close the drain hole by restoring the elastic deformation when the nozzle is detached and the nozzle is separated.

  Alternatively, the elastic on-off valve is configured to open the drain hole by abutting against the nozzle and elastically deforming when the nozzle is supported while being guided by the guide portion. Further, the elastic on-off valve is configured to substantially always close the drain hole by restoring the elastic deformation when the support of the nozzle by the guide portion is released and the nozzle is separated. Has been.

  In the oil storage device of the present invention having such a configuration, the nozzle is attached to and detached from the oil storage device or the lubricated mechanism when oil is changed using the oil changer.

  When the nozzle is mounted on the oil storage device or the lubrication target mechanism, the mounting of the nozzle is guided by the guide portion. And the said nozzle is mounted | worn with the said oil storage apparatus or the said lubrication target mechanism. This nozzle is supported by the guide part, for example. Then, the elastic on-off valve disposed so as to face the guide portion comes into contact with the nozzle. Due to the contact with the nozzle, the elastic on-off valve is elastically deformed and the drain hole is opened.

  On the other hand, when the nozzle is detached from the oil storage device or the lubrication target mechanism, the nozzle is guided by the guide portion. Then, the nozzle is separated from the elastic on-off valve. Thereby, the elastic deformation in the elastic on-off valve is restored, and the drain hole is substantially closed.

  According to such a configuration, when the oil is changed using the oil changer, the drain hole is opened only by mounting the nozzle on the oil reservoir or the lubricated mechanism, and the main reservoir and the Communication with the reservoir chamber is ensured. On the other hand, after the oil exchange is completed, the drain hole is substantially closed only by removing the nozzle from the oil storage device or the lubricated mechanism. Thereby, during the warm-up operation, the communication between the main storage chamber and the reservoir chamber through the drain hole can be substantially blocked.

  As described above, according to the present invention, it is possible to quickly and appropriately perform oil replacement while maintaining the original effect of the two-tank oil pan structure that promotes the progress of warm-up operation.

  -The guide part may be comprised so that the attachment or detachment to the said oil storage apparatus or the said to-be-lubricated mechanism of the said oil level gauge can be guided.

  According to this configuration, the guide portion guides the nozzle and the oil level gauge to be attached to and detached from the oil storage device or the lubrication target mechanism. Therefore, the structure of the oil storage device can be further simplified.

  -The guide part may be comprised so that it can alternatively support any one of the oil level gauge and the nozzle. In this case, the elastic on-off valve is configured to substantially always block the drain hole when the oil level gauge is supported by the guide portion instead of the nozzle.

  In the oil storage device of the present invention having such a configuration, when oil is exchanged using the oil exchange device, the guide portion is guided while the nozzle is guided by the guide portion instead of the oil level gauge. Supported by That is, the nozzle is attached to the oil storage device or the lubricated mechanism. At this time, the nozzle contacts the elastic on-off valve. Thereby, the drain hole is opened.

  On the other hand, when the oil change is completed, the nozzle is removed from the oil storage device or the lubricated mechanism. Thereby, the drain hole is substantially closed. Then, instead of the nozzle, the oil level gauge is supported by the guide portion while being guided by the guide portion. That is, the oil level gauge is attached to the oil storage device or the lubricated mechanism.

  According to this configuration, the guide portion also has a function as an oil level gauge guide portion for guiding and supporting the oil level gauge. Therefore, the structure of the oil storage device can be further simplified.

  The projecting portion may be provided so as to intersect with an extension line from the guide portion toward the guide direction of the nozzle.

  In the oil storage device of the present invention having such a configuration, when the oil is changed using the oil changer, the nozzle is guided along an extension line from the guide portion toward the guide direction of the nozzle, It is supported by the guide part. Thereby, the said nozzle contact | abuts reliably to the said protrusion part, and the said drain hole is open | released reliably.

  According to such a configuration, the opening and closing of the drain hole according to the attachment and detachment of the nozzle can be performed more reliably.

  -The said protrusion part may be arrange | positioned facing the said guide part. At this time, the protrusion may be disposed so as to come into contact with the nozzle when the nozzle is mounted on the oil storage device or the lubrication target mechanism while being guided by the guide. Alternatively, the protruding portion may be arranged so as to come into contact with the nozzle when the nozzle is supported while being guided by the guide portion.

  In the oil storage device of the present invention having such a configuration, the nozzle is supported by the guide portion while being guided by the guide portion when oil is changed using the oil change device. As a result, the nozzle is mounted on the oil storage device or the lubrication target mechanism. At this time, the projecting portion of the elastic on-off valve provided to face the guide portion contacts the nozzle. Due to the contact with the nozzle, the elastic on-off valve is elastically deformed and the drain hole is opened.

  On the other hand, when the oil exchange is completed, the support of the nozzle by the guide portion is released. Accordingly, the nozzle is detached from the oil storage device or the lubrication target mechanism. Then, the nozzle is separated from the protrusion. Thereby, the elastic deformation in the elastic on-off valve is restored. The drain hole is substantially closed.

  According to this configuration, the opening and closing of the drain hole according to the attachment and detachment of the nozzle can be performed more reliably.

  -The guide part may be comprised by the cylinder shape, and the said elastic on-off valve may be arrange | positioned so that the extension line | wire of the central axis in the said cylinder shape may cross | intersect.

  In the oil storage device of the present invention having such a configuration, the nozzle is guided to be attached to and detached from the oil storage device or the lubrication target mechanism along the central axis of the guide portion. The elastic on-off valve is disposed on the extended line in the guide direction. Therefore, when oil is exchanged using the oil exchange device, the nozzle is mounted on the oil storage device or the lubricated mechanism while being guided by the guide portion. Then, the nozzle comes into contact with the elastic on-off valve. Due to the contact with the nozzle, the elastic on-off valve is elastically deformed and the drain hole is opened. Therefore, according to such a configuration, the opening and closing of the drain hole according to the attachment and detachment of the nozzle can be performed more reliably.

  (E) The oil storage device may further include the following configuration.

  In the elastic on-off valve, an unevenness or a through hole may be formed at a position where the nozzle abuts (the protruding portion). This unevenness or through-hole is formed between the oil flow path between the tip of the nozzle and the surface of the elastic on-off valve when the nozzle abuts on the position (the protruding portion) of the elastic on-off valve. It is comprised so that can be formed.

  According to this configuration, when the nozzle comes into contact with the elastic on-off valve (the protruding portion), the tip of the nozzle is prevented from being blocked. Therefore, the oil change using the oil change device can be performed more quickly.

  The elastic on-off valve may include a drain hole closing protrusion. The drain hole closing projection is configured to be fitted into the drain hole.

  According to such a configuration, the drain hole closing protrusion is fitted into the drain hole during operation of the lubricated mechanism. This ensures that the drain hole is closed. That is, the communication between the main storage chamber and the reservoir chamber via the drain hole during the warm-up operation can be more reliably blocked.

  The oil pan separator may be configured such that the oil injected from the oil filler port can flow into the main reservoir chamber by allowing the oil filler port and the main reservoir chamber to communicate with each other. Here, the lubrication port is provided in the lubricated mechanism. During the operation of the lubrication target mechanism, the oil filler port is closed by an oil filler cap.

  In the oil storage device of the present invention having such a configuration, after the old used oil is discharged, the oil filler cap is removed from the oil filler port. Thereby, the said oil filler opening is open | released.

  And the said fresh oil before use is inject | poured from this oiling port. The fresh oil injected from the oil supply port is intensively injected into the main storage chamber communicating with the oil supply port. Thereby, the oil level of the main storage chamber becomes higher than the oil level of the reservoir chamber. Then, similarly to the above, the elastic on-off valve is pressed downward to open the drain hole. Thereby, the fresh oil before use injected into the main storage chamber is also supplied to the reservoir chamber side.

  Thus, according to the present invention, even when the oil is not injected using the oil changer, the oil can be quickly and appropriately injected.

  Hereinafter, embodiments of the present invention (embodiments that the applicant considers best at the time of filing of the present application) will be described with reference to the drawings.

<1. General configuration of engine>
FIG. 1 is a cross-sectional view of a part of an engine 100 including an oil storage device according to an embodiment of the present invention.

  A camshaft (not shown) as a lubricated member is rotatably accommodated in the cylinder head 110 as the lubricated mechanism. The cylinder head 110 is provided with an oil inlet 111. The oil inlet 111 is formed so that the oil filler cap 112 can be attached and detached. The oil filling port 111 is opened when the oil filler cap 112 is removed when the oil for lubricating the engine 100 is injected into the engine 100. The oil filling port 111 is closed by an oil filler cap 112 when the engine 100 is in operation.

  A cylinder block 120 as a lubricated mechanism is joined to the lower end surface of the cylinder head 110. The cylinder block 120 is formed by casting an aluminum alloy into a predetermined shape.

  Inside the cylinder block 120, a substantially cylindrical cylinder liner 121 as a member to be lubricated is accommodated. Inside the cylinder liner 121, a piston 122 as a member to be lubricated is accommodated so as to be reciprocally movable in the vertical direction in the figure. A crankshaft 123 as a member to be lubricated is disposed below the piston 122 in parallel with the engine longitudinal direction. The piston 122 and the crankshaft 123 are connected to each other via a connecting rod 124 as a lubricated member.

  A cylinder block lower flange 125 is provided at the lower end of the cylinder block 120. The cylinder block lower flange 125 is formed so as to protrude in the substantially horizontal direction toward the outside. An oil strainer 126 is disposed below the cylinder block lower flange 125. The oil strainer 126 is connected to an oil pump (not shown) provided in the cylinder block 120. A suction port 126a for sucking the oil into the oil strainer 126 when the oil pump described above is operating is formed at the lower end of the oil strainer 126.

  The oil storage device 130 according to an embodiment of the present invention is configured to store the oil in a space inside thereof. The oil storage device 130 includes three spaces: a main storage chamber 131, a reservoir chamber 132, and a reflux oil storage unit 133.

  The main storage chamber 131 is a space in which the oil strainer 126 is accommodated, and is formed on the innermost side of the oil storage device 130. The main storage chamber 131 is provided so as to open toward the cylinder head 110 and the cylinder block 120 as the above-described lubricated mechanism. The main storage chamber 131 is provided so as to communicate with the oil supply port 111. That is, the cylinder head 110, the cylinder block 120, and the oil storage device 130 are configured so that the oil injected from the oil supply port 111 can flow into the main storage chamber 131 through the cylinder head 110 and the cylinder block 120. Has been.

  The reservoir chamber 132 is a space adjacent to the main storage chamber 131 and is provided so as to surround the lower side and the side of the main storage chamber 131. The recirculation oil storage part 133 is provided above the reservoir chamber 132.

  The oil storage device 130 can receive and temporarily store a part of the recirculated oil that has recirculated from the cylinder head 110 and the cylinder block 120 as the lubricated mechanism by the action of gravity by the recirculated oil storage unit 133. It is configured as follows. In addition, the oil storage device 130 is configured such that the remaining part of the reflux oil except the part stored in the reflux oil storage part 133 can directly return to the main storage chamber 131. Yes.

<2. Configuration of Oil Storage Device of Embodiment>
The oil storage device 130 according to an embodiment of the present invention includes a first oil pan 140 and a second oil pan 150 that constitute the oil pan of the present invention. The oil storage device 130 is configured to store the oil in a space surrounded by the first oil pan 140 and the second oil pan 150.

<2-1. Schematic configuration of the first oil pan>
Similar to the cylinder block 120, the first oil pan 140 is formed by casting an aluminum alloy into a predetermined shape. The first oil pan main body 141 is a cylindrical member that constitutes a main body portion of the first oil pan 140. The first oil pan body 141 is formed so that the space inside the cylindrical first oil pan body 141 communicates with the space inside the cylinder block 120.

  A first oil pan upper flange 142 is formed at the upper end in the height direction along the central axis of the first oil pan main body 141. The first oil pan upper flange 142 is joined to the cylinder block lower flange 125. A first oil pan lower flange 143 is formed at the lower end of the first oil pan main body 141 in the height direction. The above-mentioned second oil pan 150 is fixed to the first oil pan lower flange 143 by bolts.

<2-2. General configuration of the second oil pan>
The second oil pan 150 is formed in a bathtub shape that opens toward the upper cylinder block 120. The second oil pan 150 is integrally formed by pressing a steel plate. The second oil pan 150 includes a second oil pan bottom plate 151, a second oil pan side plate 152, and a second oil pan end flange 153.

  A second oil pan side plate 152 is connected to the peripheral edge of the second oil pan bottom plate 151. The second oil pan side plate 152 is erected upward from the peripheral edge of the second oil pan bottom plate 151.

  The second oil pan end flange 153 is provided along a substantially horizontal direction so as to protrude outward. As described above, the second oil pan end flange 153 is fixed to the first oil pan lower flange 143 by a bolt while being joined to the first oil pan lower flange 143.

  A drain bolt hole 154 is formed at the lowest position of the second oil pan bottom plate 151. A thread is formed on the inner edge of the drain bolt hole 154 so that the drain bolt 155 can be screwed in.

  The “minimum position” refers to the lowest position in the direction of gravity when a predetermined device including the engine 100 (for example, an automobile) is placed on a horizontal ground. On the other hand, the highest position in the direction of gravitational action when a predetermined device including the engine 100 (for example, an automobile or the like) is placed on a horizontal ground is hereinafter referred to as “highest position”.

  The second oil pan 150 is configured in such a shape that the oil can smoothly flow down on the second oil pan bottom plate 151 and the second oil pan side plate 152 toward the drain bolt hole 154 without any stagnation due to the action of gravity. Yes. That is, by removing the drain bolt 155 from the drain bolt hole 154, the total amount of the oil stored in the space inside the second oil pan 150 (particularly, the reservoir chamber 132) passes through the drain bolt hole 154 by the action of gravity. The second oil pan 150 is configured so that it can flow out of the oil storage device 130.

<2-3. Schematic configuration of inner plate>
The oil storage device 130 includes an inner plate 160. The inner plate 160 is integrally formed of a synthetic resin plate material having low thermal conductivity. In this embodiment, the inner plate 160 is composed of a thin plate having a thickness of 2 to 3 mm made of 6 nylon resin having high oil resistance and high heat resistance and reinforced by containing 30% by weight of glass fiber. Yes. The inner plate 160 is fixed to the first oil pan lower flange 143 by bolts.

  The inner plate 160 is disposed in the space surrounded by the first oil pan 140 and the second oil pan 150 where the oil can be stored. The inner plate 160 is configured so that the space can be divided into a main storage chamber 131, a reservoir chamber 132, and a reflux oil storage portion 133.

  The inner plate 160 includes an oil pan separator 161 and a reflux oil separator 162.

<2-3-1. Oil pan separator>
The oil pan separator 161 includes an oil pan separator bottom plate 161a, an oil pan separator side plate 161b, and an oil pan separator end flange 161c.

  The oil pan separator bottom plate 161 a is disposed above the second oil pan bottom plate 151. A space is provided between the oil pan separator bottom plate 161a and the second oil pan bottom plate 151 so that a predetermined amount of the oil can be stored.

  An oil pan separator side plate 161b is connected to the peripheral edge of the oil pan separator bottom plate 161a. The oil pan separator side plate 161b is erected upward from the peripheral edge of the oil pan separator bottom plate 161a. The oil pan separator side plate 161b is formed such that its upper end is at a height corresponding to a predetermined oil level “F”.

  Here, the oil level “F” is set to an oil level when an appropriate amount of the oil is added to the oil storage amount at the predetermined oil level “L”. The oil level “L” is set to a height corresponding to the minimum oil level at which the oil is satisfactorily sucked from the suction port 126a of the oil strainer 126 even under severe operating conditions. That is, the oil level “L” is set to a minimum oil level before starting so that air is not sucked from the suction port 126a of the oil strainer 126 at the time of starting at an extremely low temperature (for example, about −30 ° C.). .

  An oil pan separator end flange 161c is formed at a peripheral edge portion at the upper end of the oil pan separator side plate 161b and at a position facing the first oil pan lower flange 143. The oil pan separator end flange 161c is formed to extend outward from the upper end of the oil pan separator side plate 161b. The oil pan separator end flange 161c is joined to the first oil pan lower flange 143, and is fixed to the first oil pan lower flange 143 by a bolt.

  The oil pan separator 161 configured as described above is disposed in the space inside the second oil pan 150. The oil pan separator 161 is configured to divide the space inside the second oil pan 150 into a main storage chamber 131 and a reservoir chamber 132.

  That is, the main storage chamber 131 is formed by a space surrounded by the oil pan separator bottom plate 161a and the oil pan separator side plate 161b. Further, the above-described reservoir chamber 132 is formed by a space below and to the side of the main storage chamber 131 and sandwiched between the second oil pan 150 and the oil pan separator 161.

  On one side (the right side in the figure) of the oil pan separator 161 in the engine width direction, a downward projecting portion 161d and an upper indented portion 161e are provided.

  The downward projecting portion 161 d is provided at the bottom of the oil pan separator 161. The downward projecting portion 161 d is formed so that the lower end portion of the main storage chamber 131 projects laterally toward the bottom portion of the reservoir chamber 132.

  The upper indented portion 161e is provided above the lower protruding portion 161d. The upper indented portion 161 e is formed so that the upper end portion of the reservoir chamber 132 is indented into the upper end portion of the main storage chamber 131.

  A drain hole 161f is provided at the lowest position on the oil pan separator bottom plate 161a, corresponding to the downward projecting portion 161d. The drain hole 161f is formed as a through hole that allows the main storage chamber 131 and the reservoir chamber 132 formed below the oil pan separator bottom plate 161a to communicate with each other. The drain hole 161f is sufficiently large (for example, about 20 mm in diameter) to allow the oil having a low viscosity (for example, about 0 ° C.) to flow out to the outside of the main storage chamber 131 (reservoir chamber 132 side). Of a circle).

  The drain hole 161f is configured to allow the oil in the main storage chamber 131 to flow out into the reservoir chamber 132 below the oil pan separator bottom plate 161a when the oil is changed. That is, the oil can be exchanged between the bottom of the main storage chamber 131 and the bottom of the reservoir chamber 132 through the drain hole 161f when the oil is changed.

<2-3-2. Reflux oil separator>
The reflux oil separator 162 is provided so as to define the upper end of the reservoir chamber 132. That is, the reflux oil separator 162 is provided so as to partition the reservoir chamber 132 and the reflux oil storage portion 133 located above the reservoir chamber 132. Further, the reflux oil separator 162 is disposed above the lower protruding portion 161d and the upper indented portion 161e in the oil pan separator 161.

  As described above, the reflux oil separator 162 is made of a synthetic resin made of the same material as the oil pan separator 161 and is formed integrally with the oil pan separator 161. In other words, one end portion of the reflux oil separator 162 is integrally connected to the upper end of the upper indented portion 161e in a seamless manner. The other end of the reflux oil separator 162 is joined to the first oil pan lower flange 143 and is fixed to the first oil pan lower flange 143 by a bolt.

  The horizontal partition plate 162a forming the main body portion of the reflux oil separator 162 is disposed substantially horizontally at a height corresponding to the oil level “F”. The horizontal partition plate 162a is provided with a lower indented portion 162a1. The lower indented portion 162a1 is formed to protrude toward the reservoir chamber 132 such that the lower end portion of the reflux oil reservoir 133 is recessed into the upper end portion of the reservoir chamber 132. A recess that can store the reflux oil received by the horizontal partition plate 162a is formed by the lower indented portion 162a1.

  A side partition plate 162b is provided so as to protrude upward from the horizontal partition plate 162a. The side partition plate 162b is formed so that the reflux oil can be received and stored on the upper side of the horizontal partition plate 162a. Further, the side partition plate 162b is configured to be able to guide the reflux oil stored in the reflux oil storage part 133 toward the downward indentation part 162a1.

  The horizontal partition plate 162a is provided with an air discharge hole 162c for drawing air upward from the upper end of the reservoir chamber 132. The air discharge hole 162c is formed as a circular through hole having a diameter of approximately 20 mm. The air discharge hole 162 c is formed at the highest position in the reservoir chamber 132. That is, the air discharge hole 162c is formed so that the air at the upper end of the reservoir chamber 132 can escape above the reflux oil separator 162 through the air discharge hole 162c.

  An air discharge hole surrounding weir 162d is provided in the vicinity of the air discharge hole 162c. The air discharge hole surrounding weir 162d is formed so as to surround the air discharge hole 162c in order to suppress the intrusion of the reflux oil received by the horizontal partition plate 162a into the air discharge hole 162c.

  An oil level gauge through hole 162e is provided in the horizontal partition plate 162a. An oil level gauge guide tube 162f constituting the guide portion and the nozzle support portion of the present invention is provided so as to surround the oil level gauge through hole 162e from the outside. The oil level gauge guide tube 162f is formed in a cylindrical shape, and is provided so as to protrude upward from the horizontal partition plate 162a.

  The oil level gauge through hole 162e is formed so that a gauge portion 171a, which is a tip portion of an oil level gauge 171 made of a rod-like member, can be inserted therethrough. The oil level gauge through hole 162e is formed at the highest position in the reservoir chamber 132, similarly to the air discharge hole 162c described above.

  The oil level gauge guide tube 162f is configured to guide the attachment / detachment of the oil level gauge 171 with respect to the engine 100 and the oil storage device 130. That is, the oil level gauge guide tube 162f is configured to guide the passage of the gauge portion 171a through the oil level gauge through hole 162e and the insertion into the reservoir chamber 132.

  The oil level gauge through-hole 162e and the oil level gauge guide tube 162f are configured to support the oil level gauge 171 in a state where the gauge portion 171a is accommodated in the reservoir chamber 132. That is, a predetermined narrow gap is formed between the oil level gauge 171 in a state where the gauge portion 171a is accommodated in the reservoir chamber 132, and the oil level gauge through hole 162e and the oil level gauge guide tube 162f. Yes. While the width of the gap is difficult to pass through the oil having a low temperature during the warm-up operation, it is difficult to pass the oil having a low viscosity at a relatively high temperature (for example, 60 ° C. or more) after the air and the warm-up operation. It is set so that it can be easily passed.

  The oil level gauge guide tube 162f is formed such that its upper end is higher than the upper end of the side partition plate 162b. The lower end of the oil level gauge guide tube 162f is formed integrally with the horizontal partition plate 162a. That is, the lower end portion of the oil level gauge guide tube 162f is liquid-tightly connected to a portion around the oil level gauge through hole 162e in the reflux oil separator 162.

<2-3-3. Configuration around the inner plate>
The above-described oil level gauge 171 is inserted into the reservoir chamber 132 by the gauge portion 171a which is the tip thereof, so that the oil level in the reservoir chamber 132 is changed according to the state of the oil attached to the gauge portion 171a. It is comprised so that it can display.

  A handle 171b is provided at the base end of the oil level gauge 171, that is, the end opposite to the gauge 171a. A stopper portion 171c is provided at the lower end of the handle portion 171b.

  An oil level gauge support sleeve 172 for supporting the oil level gauge 171 is mounted on the cylinder block 120. The oil level gauge support sleeve 172 is made of a long and thin tubular member.

  The lower end of the oil level gauge support sleeve 172 is disposed so as to penetrate the cylinder block lower flange 125 and be exposed to the inside of the first oil pan 140. A portion where the oil level gauge support sleeve 172 passes through the cylinder block lower flange 125 is sealed with an O-ring 173.

  The oil level gauge 171 is inserted into the oil level gauge support sleeve 172 until the stopper part 171c contacts the upper end of the oil level gauge support sleeve 172, so that the gauge part 171a is disposed at a predetermined position in the reservoir chamber 132. It is configured to be.

  The oil pan separator bottom plate 161 a is provided with a tongue-like elastic on-off valve 174. The elastic on-off valve 174 is made of a flexible synthetic resin plate or a metal plate.

  The elastic on-off valve 174 has a lower surface (a surface facing the second oil pan bottom plate 151) in the oil pan separator bottom plate 161a so as to cover the drain hole 161f formed at the lowest position of the oil pan separator bottom plate 161a from the lower side. ) Is placed in contact with. That is, the elastic on-off valve 174 is arranged so as to face the reservoir chamber 132 formed below the oil pan separator bottom plate 161a.

  One end portion (the left end portion in the figure) of the elastic on-off valve 174 is fixed to the oil pan separator bottom plate 161a as a fixed end portion in the cantilever. The other end portion (the right end portion in the figure) of the elastic on-off valve 174, that is, the protruding portion 174a, which is a free end portion in the cantilever, is provided so as to protrude outside the oil pan separator bottom plate 161a. That is, the projecting portion 174 a is provided so as to project laterally from the lower projecting portion 161 d of the oil pan separator 161 toward the reservoir chamber 132.

  The protrusion 174a is disposed so as to face the oil level gauge guide tube 162f. That is, the protruding portion 174a is disposed so as to intersect with an extension line of the central axis C of the oil level gauge guide tube 162f.

  The above-described elastic on-off valve 174 is configured such that the drain hole 161f can be opened by the protrusion 174a being pressed downward in the drawing and elastically deforming. The elastic on-off valve 174 is configured to always close the drain hole 161f by releasing the pressure on the protruding portion 174a and restoring the elastic deformation described above.

  A first valve device 175 is provided at the bottom of the oil pan separator side plate 161b so as to penetrate the oil pan separator side plate 161b. The first valve device 175 is mounted on the oil pan separator side plate 161b at a position facing the downward projecting portion 161d. The first valve device 175 is disposed at a position lower than the oil level “L” and higher than the suction port 126 a of the oil strainer 126.

  The first valve device 175 is composed of a thermostat valve device configured to open and close according to temperature. That is, the first valve device 175 is configured to be able to control the communication state between the main storage chamber 131 and the reservoir chamber 132 by opening and closing according to the temperature of the oil at the bottom of the main storage chamber 131. . The valve opening temperature of the first valve device 175 is set to approximately 60 ° C., which is the temperature of the oil at the bottom of the main storage chamber 131 at the end of the warm-up operation.

In addition, after the first valve device 175 is opened at a temperature equal to or higher than the above-described valve opening temperature, the valve opening rate (the current channel cross-sectional area with respect to the maximum channel cross-sectional area is increased in accordance with the increase in the oil temperature. The ratio is high. Here, the first valve device 175 is configured so that the maximum flow path cross-sectional area is approximately 8 cm ² .

  A second valve device 176 is provided in the lower indented portion 162a1 of the horizontal partition plate 162a so as to penetrate a portion corresponding to the lowest position in the lower indented portion 162a1. Similar to the first valve device 175 described above, the second valve device 176 is composed of a thermostat valve device configured to open and close according to temperature.

  That is, the second valve device 176 controls the communication state between the reservoir chamber 132 and the reflux oil storage unit 133 by opening and closing according to the temperature of the oil in the reflux oil storage unit 133 (the downward indentation portion 162a1). Configured to get. In the present embodiment, the second valve device 176 is configured to open after the first valve device 175. Further, as shown in FIG. 1, the second valve device 176 is arranged at a diagonal position with respect to the first valve device 175 in the engine width direction. That is, the first valve device 175 and the second valve device 176 are arranged so as to be separated as much as possible.

<2-3-4. Detailed configuration of main parts of inner plate>
2 and 3 are enlarged cross-sectional views of the periphery of the main part of the inner plate 160 shown in FIG.

  2 and 3, the oil level gauge guide tube 162f and the oil level gauge support sleeve 172 are configured to guide the attachment / detachment of the oil level gauge 171 with respect to the engine 100 (see FIG. 1). . The oil level gauge guide tube 162f and the oil level gauge support sleeve 172 are provided to the engine 100 (see FIG. 1) of the oil change nozzle 177 constituting the oil discharge port and / or the injection port in an oil change device (not shown). It is configured to guide the attachment / detachment.

  That is, the oil level gauge guide tube 162f and the oil level gauge support sleeve 172 are configured to selectively support either one of the oil level gauge 171 and the oil replacement nozzle 177. Here, the oil changer described above is configured to be able to discharge the oil in the reservoir chamber 132 via the oil change nozzle 177. The oil changer is configured to be able to inject the oil into the reservoir chamber 132 via the oil change nozzle 177.

  The protruding portion 174a of the elastic on-off valve 174 intersects the extension line from the oil level gauge guide tube 162f to the above-described central axis C direction, which is the guide direction of the oil change nozzle 177 by the oil level gauge guide tube 162f. Is arranged. The protrusion 174a is provided to face the oil level gauge guide tube 162f. That is, the protrusion 174a is mounted on the engine 100 (see FIG. 1) when the oil change nozzle 177 is supported by the oil level gauge guide tube 162f while being guided by the oil level gauge guide tube 162f. It arrange | positions so that it may contact | abut with the oil replacement nozzle 177. FIG.

  The elastic on-off valve 174 is elastically deformed as shown in FIG. 3 when the oil change nozzle 177 is attached to the engine 100 (see FIG. 1) instead of the oil level gauge 171. The drain hole 161f is opened. Further, the elastic on-off valve 174 restores elastic deformation as shown in FIG. 2 when the oil level gauge 171 is attached to the engine 100 (see FIG. 1) instead of the oil change nozzle 177. By doing so, the drain hole 161f is always closed.

  Referring to FIG. 3, when the oil change nozzle 177 is attached, the oil having a high viscosity at a low temperature is provided between the tip opening 177 a formed at the tip of the oil change nozzle 177 and the protrusion 174 a. A gap is formed so as to allow passage of.

<3. Explanation of Operation of Apparatus Configuration of Embodiment>
Hereinafter, operation | movement of the engine 100 provided with the oil storage apparatus 130 of this embodiment is demonstrated, referring each drawing.

  Referring to FIG. 1, when engine 100 is started, crankshaft 123 is rotationally driven. The rotation of the crankshaft 123 activates an oil pump (not shown). By the operation of the oil pump, the oil is sucked out from the bottom of the main storage chamber 131 through the suction port 126a of the oil strainer 126 disposed at the bottom of the main storage chamber 131. This oil is supplied to the lubricated members such as the piston 122 and the crankshaft 123.

  The oil supplied to the lubricated members such as the piston 122 and the crankshaft 123 performs a lubricating action on the lubricated member and absorbs heat such as frictional heat from the lubricated member. Thereafter, the oil returns to the oil storage device 130 as the reflux oil by the action of gravity.

  A part of the reflux oil returns directly to the main storage chamber 131 through an opening formed by the upper end of the oil pan separator side plate 161b. The recirculation oil that recirculates directly to the main storage chamber 131 in this manner travels along the inner wall surface of the cylinder block 120 or falls freely in the space inside the cylinder block 120 and is stored in the main storage chamber from the opening. It flows into the chamber 131.

  On the other hand, the remaining part of the reflux oil except the part that has been directly refluxed to the main storage chamber 131 as described above is temporarily received by the reflux oil separator 162.

  The reflux oil once received by the reflux oil separator 162 in this manner is stored in the reflux oil storage part 133 formed by the horizontal partition plate 162a and the side partition plate 162b. Further, the reflux oil is guided to the lower indented portion 162a1 by the side partition plate 162b. The reflux oil guided by the side partition plate 162b is stored at a position in the vicinity of the second valve device 176 in the reflux oil storage unit 133.

  A part of the reflux oil once received by the reflux oil separator 162 and outside the reflux oil storage part 133 (on the left side of the side partition plate 162b in the drawing) is an oil pan separator side plate. It recirculates to the main storage chamber 131 through the opening formed by the upper end of 161b. Further, a part of the reflux oil flows toward the air discharge hole 162c. However, the air discharge hole surrounding weir 162d surrounding the air discharge hole 162c suppresses the flow of the reflux oil into the air discharge hole 162c (inflow into the reservoir chamber 132).

<3-1. During warm-up>
During the warm-up operation after the cold start of the engine 100, the temperature of the oil in the main storage chamber 131 is lower than the above-described valve opening temperature in the first valve device 175. In this case, the first valve device 175 is closed. Thereby, the communication between the main storage chamber 131 and the reservoir chamber 132 is blocked.

  As described above, during the warm-up operation, the first valve device 175 is closed to prevent the low-temperature oil at the bottom of the reservoir chamber 132 from flowing into the bottom of the main storage chamber 131. As a result, the amount of oil that can be supplied to the cylinder head 110 and the cylinder block 120, that is, the amount of oil that circulates between the cylinder head 110 and the cylinder block 120 and the oil storage device 130 is reduced in the main storage chamber 131. The amount stored in Then, the progress of the warm-up operation is promoted by the restriction of the oil supply / circulation amount and the temperature rise of the oil in the main storage chamber 131 due to the inflow of the reflux oil.

  Further, during the warm-up operation, only a small amount of the reflux oil is stored in the reflux oil storage unit 133, and the temperature thereof is also relatively low. Therefore, the second valve device 176 is also closed. Further, the inflow of the recirculated oil received by the recirculated oil reservoir 133 into the reservoir chamber 132 surrounds the tall oil level gauge guide tube 162f and the air discharge hole 162c that cover the oil level gauge through hole 162e. It is limited by the air discharge hole surrounding weir 162d. However, a part of the reflux oil on the reflux oil separator 162 can return to the main storage chamber 131 through the opening formed by the upper end of the oil pan separator side plate 161b as described above.

  Due to the closing of the second valve device 176 as described above, the inflow of the reflux oil received by the horizontal partition plate 162a into the reservoir chamber 132 is limited, and the second valve device 176 by the side partition plate 162b is Due to the induction of the reflux oil to the vicinity, the storage amount of the reflux oil in the lower invading portion 162a1 gradually increases.

  Moreover, the restriction of the inflow of the reflux oil into the reservoir chamber 132, the limitation of the inflow of the oil from the reservoir chamber 132 to the main storage chamber 131, and the suction of the oil from the main storage chamber 131 cause warming. During machine operation, a difference in oil level occurs between the main storage chamber 131 and the reservoir chamber 132. This difference in oil level is such that the oil level in the main storage chamber 131 is lower than the oil level in the reservoir chamber 132.

  Due to this difference in oil level, a differential pressure is generated between the main storage chamber 131 and the reservoir chamber 132. That is, in the vicinity of the drain hole 161f and the first valve device 175, a difference is generated between the oil pressure on the main reservoir chamber 131 side and the oil pressure on the reservoir chamber 132 side. Due to this differential pressure, the elastic on-off valve 174 is pressed toward the upper oil pan separator bottom plate 161a in the drawing. This ensures that the drain hole 161f is shielded during the warm-up operation.

<3-2. End of warm-up operation>
When the temperature of the oil in the main storage chamber 131 in the vicinity of the first valve device 175 reaches the valve opening temperature, the warm-up operation ends. That is, the first valve device 175 constituting the oil communication path between the main storage chamber 131 and the reservoir chamber 132 is opened.

  When the main storage chamber 131 and the reservoir chamber 132 communicate with each other by opening the first valve device 175, the oil in the reservoir chamber 132 is caused to flow into the bottom of the main storage chamber 131 by the above-described differential pressure generated during the warm-up operation. Surely flows into.

  Thereafter, the second valve device 176 is opened. As a result, the reflux oil stored in the reflux oil reservoir 133 flows into the upper portion of the reservoir chamber 132 with a force of gravity. Due to the inflow of the reflux oil into the upper portion of the reservoir chamber 132, the oil level difference and the differential pressure as described above are generated, and the oil in the reservoir chamber 132 flows into the bottom of the main reservoir chamber 131.

<3-3. When changing oil without oil changer>
Usually, the oil change is performed for a while after the engine is stopped. Therefore, the first valve device 175 is in a closed state when the oil is changed. Therefore, when oil is exchanged, the communication between the main storage chamber 131 and the reservoir chamber 132 via the first valve device 175 is substantially blocked.

  Here, in order to discharge the used old oil, the drain bolt 155 is removed and the drain bolt hole 154 is opened. Then, the oil in the reservoir chamber 132 is discharged to the outside through the drain bolt hole 154. As a result, the oil level in the reservoir chamber 132 is rapidly reduced.

  As the oil level in the reservoir chamber 132 decreases, a difference in oil level occurs between the main reservoir chamber 131 and the reservoir chamber 132 such that the main reservoir chamber 131 is higher. When such a difference in oil level occurs, a differential pressure is generated between the main storage chamber 131 and the reservoir chamber 132. Based on this differential pressure, the elastic on-off valve 174 is pressed downward in the figure by the oil just above the drain hole 161f.

  In this way, when the elastic on-off valve 174 is pressed downward in the figure, the elastic on-off valve 174 is elastically deformed to open the drain hole 161f. The oil is discharged from the main storage chamber 131 to the reservoir chamber 132 by opening the drain hole 161f. This compensates for the oil level difference to some extent. That is, it is possible to suppress the occurrence of a large difference in oil level to such an extent that a large differential pressure that can generate a large bending stress in the oil pan separator 161 is generated.

  As described above, according to the configuration of the present embodiment, the oil is adjusted from the main reservoir chamber 131 and the reservoir chamber 132 while the oil level of the main reservoir chamber 131 and the reservoir chamber 132 is adjusted from the initial stage of oil discharge. Immediately discharged outside.

  When the oil discharge is finished, the drain bolt hole 154 is closed by attaching the drain bolt 155 to the drain bolt hole 154. Also, the oil filler cap 112 is opened by removing the oil filler cap 112 from the oil filler port 111 for the injection of fresh oil before use. Then, the fresh oil before use is injected into the engine 100 through the oil filling port 111.

  The oil injected into the engine 100 from the oil supply port 111 is intensively injected into the main storage chamber 131 communicating with the oil supply port 111. As a result, the oil level in the main storage chamber 131 rises rapidly. Then, as described above, the elastic on-off valve 174 is pressed downward and elastically deformed, thereby opening the drain hole 161f. Thereby, the fresh oil before use injected into the main storage chamber 131 is also supplied to the reservoir chamber 132 side.

  As described above, according to the configuration of the present embodiment, the oil level of the main reservoir chamber 131 and the reservoir chamber 132 is adjusted from the initial stage of oil injection, and the oil is supplied to the main reservoir chamber 131 and the reservoir chamber 132. The injection is performed promptly. In addition, even when the oil is injected, the occurrence of a large oil level difference that can generate a large differential pressure that can generate a large bending stress in the oil pan separator 161 can be suppressed.

  When the oil injection is completed, the downward pressure on the elastic on-off valve 174 is released in a state where there is almost no difference in the oil level between the main storage chamber 131 and the reservoir chamber 132. Thereby, the elastic deformation of the elastic on-off valve 174 is restored, and the drain hole 161f is closed.

<3-4. When changing oil using an oil changer>
Referring to FIG. 2, the oil level gauge 171 is supported by the oil level gauge through hole 162e, the oil level gauge guide tube 162f, and the oil level gauge support sleeve 172 before the oil change. In this case, the gauge portion 171 a that is the tip of the oil level gauge 171 is separated from the protruding portion 174 a of the elastic on-off valve 174. That is, the elastic on-off valve 174 (protrusion 174a) is not pressed downward in the figure.

  When the oil is changed, the oil level gauge 171 is removed. As shown in FIG. 3, the oil replacement nozzle 177 is supported by the oil level gauge through hole 162e, the oil level gauge guide tube 162f, and the oil level gauge support sleeve 172. As a result, the elastic on-off valve 174 is pressed downward in the drawing to be elastically deformed, thereby opening the drain hole 161f.

  In this way, the oil change nozzle 177 is inserted into the reservoir chamber 132. Thus, the used oil is sucked by the oil changer (not shown) through the oil change nozzle 177 with the drain hole 161f opened.

  Here, in the present embodiment, as shown in FIG. 3, a gap is formed between the tip opening 177a of the oil change nozzle 177 and the protrusion 174a. Accordingly, the used oil is rapidly sucked by the oil changer through the oil change nozzle 177 without the front opening 177a of the oil change nozzle 177 being blocked by the elastic on-off valve 174.

  When the oil in the reservoir chamber 132 is sucked in by the oil replacement nozzle 177, the oil level in the reservoir chamber 132 is rapidly lowered. However, the main storage chamber 131 and the reservoir chamber 132 communicate with each other through the drain hole 161f. Therefore, the oil is discharged from the main storage chamber 131 to the reservoir chamber 132 as the oil level in the reservoir chamber 132 decreases.

  In addition, when the oil change nozzle 177 is inserted into the reservoir chamber 132, the fresh oil before use is rapidly injected into the reservoir chamber 132 through the oil change nozzle 177 with the drain hole 161f opened. Is done. The injected oil is also injected into the main storage chamber 131 through the open drain hole 161f.

  As described above, according to the configuration of the present embodiment, the drain hole 161f is opened by inserting the oil replacement nozzle 177 into the reservoir chamber 132. Thereby, the oil can be discharged simultaneously from the main reservoir chamber 131 and the reservoir chamber 132 when the oil is discharged using the oil changer. In addition, the oil can be injected into the main reservoir chamber 131 and the reservoir chamber 132 simultaneously when the oil is injected using the oil changer.

<4. Action / Effect by Device Configuration of Embodiment>
In the configuration of the present embodiment, the drain hole 161f can be opened by the elastic deformation of the elastic on-off valve 174 when the oil is changed. Thereby, the communication between the main storage chamber 131 and the reservoir chamber 132 can be ensured when the oil is changed. On the other hand, when the engine 100 is in operation (particularly during warm-up operation), the elastic deformation of the elastic on-off valve 174 is restored, so that the drain hole 161f can be closed. Thereby, during the warm-up operation, the communication between the main storage chamber 131 and the reservoir chamber 132 through the drain hole 161f can be blocked.

  Therefore, according to the configuration of the present embodiment, it is possible to quickly and appropriately change the oil while maintaining the original effect of the two-tank oil pan structure that promotes the progress of the warm-up operation.

  -In the structure of this embodiment, the elastic on-off valve 174 is arrange | positioned so that the drain hole 161f formed in the lowest position of the oil pan separator bottom plate 161a can be covered from the lower side. Further, the elastic on-off valve 174 is disposed so as to face the reservoir chamber 132 located below the elastic on-off valve 174.

  Here, when the oil change is completed, the difference in oil level that the main storage chamber 131 becomes higher than the reservoir chamber 132 disappears. Further, during operation of the engine 100 (particularly during warm-up operation), a difference in oil level is generated such that the reservoir chamber 132 is higher than the main storage chamber 131. As a result, the downward pressure on the elastic on-off valve 174 is released, and the drain hole 161f is closed.

  Therefore, according to the configuration of the present embodiment, the communication between the main storage chamber 131 and the reservoir chamber 132 through the drain hole 161f, which is necessary for promoting the progress of the warm-up operation, is reliably performed. obtain.

  In the configuration of the present embodiment, when the oil replacement nozzle 177 is supported by the oil level gauge through hole 162e, the oil level gauge guide tube 162f, and the oil level gauge support sleeve 172 instead of the oil level gauge 171. When the oil change nozzle 177 comes into contact with the protruding portion 174a, the elastic on-off valve 174 is elastically deformed to open the drain hole 161f. Therefore, according to the configuration of the present embodiment, the oil change using the oil changer can be performed quickly and accurately.

  In the configuration of the present embodiment, the oil level gauge through hole 162e, the oil level gauge guide tube 162f, and the oil level gauge support sleeve 172 for guiding the attachment and detachment of the oil level gauge 171 with respect to the engine 100 are used. The oil exchange nozzle 177 is guided to be attached and detached.

  Therefore, according to the configuration of the present embodiment, the engine 100 and the oil storage device 130 that can perform the oil change quickly and accurately using the oil change device can be realized with a simpler device configuration.

  -In the structure of this embodiment, the protrusion part 174a is provided so that the oil level gauge guide cylinder 162f may be opposed. That is, the protruding portion 174a is disposed so as to intersect with an extension line of the central axis C of the oil level gauge guide tube 162f, which is the guide direction of the oil change nozzle 177.

  According to such a configuration, when the oil change nozzle 177 is attached to the engine 100, the tip of the oil change nozzle 177 can be reliably guided toward the protruding portion 174a. Therefore, the tip of the oil change nozzle 177 can be surely brought into contact with the protrusion 174a. That is, the drain hole 161f can be reliably opened by mounting the oil change nozzle 177 to the engine 100.

  In the configuration of the present embodiment, as shown in FIG. 3, when the oil change nozzle 177 is attached, there is a gap between the tip opening 177 a and the protrusion 174 a in the oil change nozzle 177. A gap is formed so that the oil having a high viscosity can pass through at a low temperature.

  According to the configuration of the present embodiment, when the old oil that has been used is sucked using the oil changer, the tip opening 177a of the oil change nozzle 177 is blocked by the elastic on-off valve 174. Can be suppressed. Therefore, the oil suction using the oil changer can be performed quickly.

  In the configuration of the present embodiment, the downward projecting portion 161 d is formed at the bottom of the oil pan separator 161 so as to project the lower end portion of the main storage chamber 131 laterally toward the bottom portion of the reservoir chamber 132. Yes. Further, the upper indented portion 161e is provided above the lower protruding portion 161d. The upper indented portion 161 e is formed so that the upper end portion of the reservoir chamber 132 is indented into the upper end portion of the main storage chamber 131.

  According to such a configuration, the oil amount at the bottom of the main storage chamber 131 is ensured by the downward projecting portion 161d. Therefore, it is possible to suppress the occurrence of a shortage of the oil amount particularly at the time of starting at a very low temperature. In addition, since the volume of the main storage chamber 131 can be set to a certain extent so as not to cause a shortage of the oil amount at the start of the cryogenic temperature described above, the warm-up operation can be promoted better.

  In the configuration of the present embodiment, a side partition plate 162b configured to guide the reflux oil toward the second valve device 176 is provided so as to protrude upward from the reflux oil separator 162. Yes. Thereby, the recirculation oil in the vicinity of the second valve device 176 during the warm-up operation can be promoted satisfactorily so that the inflow of the oil from the reservoir chamber 132 to the main storage chamber 131 can be facilitated at the end of the warm-up operation. A sufficient amount of storage can be secured.

  Therefore, according to the configuration of the present embodiment, the reservoir chamber 132 and the main storage chamber 131 after the warm-up operation are completed without diminishing the effect of the two-tank oil pan structure that promotes the progress of the warm-up operation. In the meantime, the exchange of the oil can be actively performed. That is, after the warm-up operation is completed, the oil stored in the oil storage device 130 can be used as evenly as possible. Thereby, deterioration of the durability of the oil can be suppressed.

  In the configuration of the present embodiment, the oil level gauge guide tube 162f is formed higher than the side partition plate 162b. An air discharge hole surrounding weir 162d is formed so as to surround the air discharge hole 162c.

  Thereby, the outflow to the reservoir chamber 132 of the recirculation oil stored in the recirculation oil storage part 133 through the oil level gauge through hole 162e and the air discharge hole 162c can be effectively suppressed. In particular, even when the oil level fluctuates during turning, uphill / downhill acceleration, or acceleration / deceleration of a vehicle equipped with the engine 100, the outflow of the recirculation oil from the recirculation oil reservoir 133 to the reservoir chamber 132 is suppressed. Can be done.

  Therefore, according to the configuration of the present embodiment, the amount of the recirculated oil stored in the vicinity of the second valve device 176 during the warm-up operation can be ensured more reliably.

  In the configuration of the present embodiment, the lower end portion of the oil level gauge guide tube 162f is formed integrally with the horizontal partition plate 162a. Therefore, the sealing performance at the joint portion between the oil level gauge guide tube 162f and the horizontal partition plate 162a forming the main body portion of the reflux oil separator 162 is further improved. Further, the reflux oil separator 162 provided with the oil level gauge guide tube 162f can be formed at a lower cost.

  In the configuration of the present embodiment, the oil level gauge through hole 162 e and the air discharge hole 162 c are formed at the highest position in the reservoir chamber 132. Therefore, when the oil is exchanged, the oil can be exchanged quickly because the air is better extracted from the upper end portion of the reservoir chamber 132.

  In the configuration of the present embodiment, the first valve device 175 is opened before the second valve device 176. Thereby, the oil stored in the reservoir chamber 132 can be supplied to the main storage chamber 131 earlier. Therefore, an extreme decrease in the oil level in the main storage chamber 131 can be suppressed as much as possible. That is, the occurrence of a shortage of oil supply to the cylinder head 110 and the cylinder block 120 can be suppressed as much as possible.

  -In the structure of this embodiment, the 1st valve apparatus 175 is arrange | positioned in the diagonal position in the said engine width direction with the 2nd valve apparatus 176 which is a communication part of the recirculation | reflux oil storage part 133 and the reservoir chamber 132. Yes.

  As a result, the oil in the reservoir chamber 132 in the vicinity of the first valve device 175 is transferred to the first valve device 175 based on the temporary increase in the oil level in the reservoir chamber 132 that occurs at a position diagonal to the first valve device 175. It flows into the main storage chamber 131 through the valve device 175. Therefore, oil circulation in the oil storage device 130 can be actively performed. Therefore, deterioration of the durability of the oil can be further suppressed.

  In the present embodiment, the oil communication passage between the main storage chamber 131 and the reservoir chamber 132 is constituted by the first valve device 175. Further, in order to control whether or not the recirculated oil flows into the reservoir chamber 132 from the recirculated oil reservoir 133, the second valve device 176 having the same configuration as the first valve device 175 described above is configured.

  Therefore, according to the present embodiment, the open / close state of the first valve device 175 and the second valve device 176 is set by the oil temperature itself based on the operating state of the engine 100. Therefore, a good lubrication state in engine 100 can be realized based on a very simple device configuration.

<5. List of examples of some modifications>
Note that, as described above, the above-described embodiment is merely an example of the embodiment of the present invention considered to be the best at the time of filing of the present application by the applicant, and the present invention is not limited to the above. It is not limited to the embodiment. Therefore, as a matter of course, various modifications can be made to the configurations shown in the above-described embodiments without departing from the essential part of the present invention.

  In the following, some modifications will be illustrated to the extent that they can be added in the application of the present application under the prior application principle. In the following description of each modification, the same name and the same code | symbol shall be attached | subjected about the component which has the structure and function similar to each component in the above-mentioned embodiment also in the said modification. . And about description of the said component, description in the above-mentioned embodiment shall be used suitably in the range which is not inconsistent.

  However, it goes without saying that the modified examples are not limited to the following. The limited interpretation of the present invention based on the description of the above-described embodiment and the following modifications unfairly harms the interests of applicants who rush to file applications under the principle of prior application, but unfairly imitates imitators. However, contrary to the purpose of patent law for the purpose of protection and use of the invention, it is not allowed.

  Further, it goes without saying that the configuration of the above-described embodiment and the configuration described in each of the following modifications can be applied in an appropriate combination within a technically consistent range.

  (I) In addition to the engine disclosed in the above embodiment, the present invention can be applied to various devices including an oil pan such as an automatic transmission.

  (Ii) The first valve device 175 and the second valve device 176 can be realized by various configurations such as an electromagnetic valve device in addition to the thermostat valve device as in the above-described embodiment. Moreover, either the 1st valve apparatus 175 and the 2nd valve apparatus 176 may be comprised so that it may open first, and you may be comprised so that it may open simultaneously.

  (Iii) As shown in FIGS. 2 and 3, the protruding portion 174 a that is a free end portion of the elastic on-off valve 174 may be configured in a wedge shape that becomes thinner toward the tip end portion. As a result, as shown in FIG. 3, a gap through which the oil can pass is reliably formed between the tip opening 177a and the protrusion 174a when the oil replacement nozzle 177 is in contact. obtain.

  (Iv) FIG. 4 is an enlarged cross-sectional view showing a configuration of a modified example of the elastic on-off valve 174 shown in FIGS. As shown in FIG. 4, the elastic on-off valve 174 includes a drain hole closing projection 174b.

  The drain hole closing projection 174b is provided at a position corresponding to the drain hole 161f in the elastic on-off valve 174. As shown by the two-dot chain line in the figure, the drain hole closing projection 174b has restored the elastic deformation (the state shown by the solid line in the figure) in the elastic on-off valve 174 that opens the drain hole 161f. In this case, the drain hole 161f can be fitted.

  According to such a configuration, when the engine 100 (see FIG. 1) is in operation, particularly during the warm-up operation, the drain hole closing projection 174b is fitted into the drain hole 161f, so that the drain hole 161f is reliably closed. . That is, the communication between the main storage chamber 131 and the reservoir chamber 132 through the drain hole 161f during the warm-up operation can be more reliably blocked.

  (V) As shown in FIG. 4, the flexible plate material constituting the elastic on-off valve 174 is in a state where the downward pressing is released (a state indicated by a two-dot chain line in the figure). In this case, it may be configured to be curved downward and convex. In this case, it is preferable that the elastic on-off valve 174 is configured to come into contact with the oil pan separator bottom plate 161a with a predetermined pressure in the above-described state where the downward pressing is released.

  According to such a configuration, the communication between the main storage chamber 131 and the reservoir chamber 132 through the drain hole 161f during the warm-up operation can be more reliably blocked.

  (Vi) FIG. 5 is an enlarged view showing the configuration of another modification of the elastic on-off valve 174 shown in FIGS. 1 to 3. Here, FIG. 5A is a side view, and FIG. 5B is a plan view.

  As shown in FIG. 5, the protrusion 174a may be formed with a protrusion 174a1. That is, the projecting portion 174a is composed of a plate-like portion in which no through hole is formed and a protrusion 174a1 standing from the plate-like portion. Here, a plurality of protrusions 174a1 may be formed. In this case, a groove 174a2 through which the oil can pass is formed between a plurality of adjacent protrusions 174a1.

  According to this configuration, when the protrusion 174a1 comes into contact with the tip of the oil change nozzle 177 (see FIG. 3), the oil flow path is reliably formed between the tip opening 177a and the protrusion 174a. obtain. Oil suction can be performed quickly through the oil flow path.

  Further, when oil is injected, the protrusion 174a can be further separated from the tip opening 177a by the momentum of the oil ejected from the oil replacement nozzle 177 (see FIG. 3). Therefore, oil injection can be performed more quickly.

  Note that a drain hole closing projection 174b may be provided as indicated by a two-dot chain line in the figure.

  (Vii) FIGS. 6 to 8 are enlarged plan views showing configurations of other modified examples of the elastic on-off valve 174 shown in FIGS. In the protrusion 174a of the elastic on-off valve 174 shown in FIGS. 6 to 8, a through hole through which the oil can pass is formed.

  According to this configuration, when oil is sucked by an oil changer (not shown), the oil can be quickly sucked through the through hole. In addition, when oil is injected by the oil changer, the oil can be quickly injected through the through hole.

  For example, as illustrated in FIG. 6, the protruding portion 174a may be formed in a mesh shape.

  Further, as shown in FIG. 7, a through-hole 174a3 may be formed in the protrusion 174a. In this case, the through hole 174a3 is preferably formed so that its inner diameter is smaller than the outer diameter of the oil change nozzle 177. As a result, the oil change nozzle 177 can be surely brought into contact with the protruding portion 174a to reliably press the elastic on-off valve 174.

  Further, as shown in FIG. 8, the projecting portion 174a may be formed with a large number of through holes 174a4.

  (Viii) FIGS. 9 and 10 are diagrams showing the configuration of another modification of the elastic on-off valve 174 shown in FIGS. 1 to 3.

  As shown in FIG. 9, the oil level gauge guide tube 162f is configured and arranged so as to guide the oil level gauge 171 (see FIG. 1) and the oil change nozzle 177 into the main storage chamber 131. May be.

  In such a configuration, the elastic opening / closing valve 174 provided on the oil pan separator bottom plate 161a is pressed from the main reservoir chamber 131 side to the outer reservoir chamber 132 side by the tip of the oil change nozzle 177. Thereby, the elastic on-off valve 174 is pushed open from the inside of the main storage chamber 131. Then, the drain hole 161f is opened. In this state, the oil is discharged and injected through the oil change nozzle 177.

  FIG. 10A is a plan view of the elastic on-off valve 174 shown in FIG. FIG. 10B is a cross-sectional view of the elastic on-off valve 174 shown in FIG. FIG. 10C is a cross-sectional view showing a state where the elastic on-off valve 174 shown in FIG. 10B is pressed and elastically deformed.

  As shown in FIGS. 9 and 10, the elastic on-off valve 174 may be formed integrally with the oil pan separator bottom plate 161a. That is, as shown in FIGS. 10A and 10B, the oil pan separator bottom plate 161a has a substantially U-shaped slit 161a1 in plan view. The slit 161a1 has a width of 1 mm or less, which makes it difficult for the oil having a high viscosity at low temperatures to pass through. An elastic on-off valve 174 is configured by a cantilevered portion formed inside the slit 161a1 in plan view.

  As shown in FIG. 10A, the elastic on-off valve 174 is formed such that its free end side can come into contact with the oil change nozzle 177. That is, as shown in FIG. 10B, the elastic on-off valve 174 is formed so that its free end side intersects the above-mentioned central axis C.

  In such a configuration, as shown in FIG. 10C, the free end side of the elastic on-off valve 174 abuts on the oil change nozzle 177 so that the free end side of the elastic on-off valve 174 is pressed downward. . By this pressing, the elastic on-off valve 174 is elastically deformed so as to bend. As a result, a drain hole 161 f is formed on the free end side of the elastic on-off valve 174. Through this drain hole 161f, the main storage chamber 131 on the upper side of the oil pan separator bottom plate 161a and the reservoir chamber 132 on the lower side of the oil pan separator bottom plate 161a communicate with each other with a relatively large flow path cross-sectional area.

  On the other hand, when the downward pressing of the elastic on-off valve 174 is released, the above-described bending is restored as shown in FIGS. 10 (A) and 10 (B). In this state, it is difficult for the oil having a temperature that can normally be reached during oil change (oil discharge and oil injection) to pass through the slit 161a1. Therefore, in this state, the communication between the main storage chamber 131 on the upper side of the oil pan separator bottom plate 161a and the reservoir chamber 132 on the lower side of the oil pan separator bottom plate 161a is substantially blocked. That is, the drain hole 161f is substantially closed.

  According to this configuration, the elastic on-off valve 174 can be formed by a very simple manufacturing process in which the above-described slit 161a1 is formed in the oil pan separator bottom plate 161a.

  (Ix) In the above-described embodiment and modification, the oil level gauge support sleeve 172 is attached to the cylinder block 120 so as to penetrate the cylinder block lower flange 125. That is, in the above-described embodiment and modification, the oil level gauge 171 and the oil change nozzle 177 are attached to and detached from the cylinder block 120 that constitutes the main body portion of the engine 100.

  However, instead of such a configuration, the oil level gauge support sleeve 172 may be provided so as to penetrate the first oil pan 140 or the second oil pan 150. That is, the oil level gauge 171 and the oil replacement nozzle 177 may be attached to and detached from the oil storage device 130.

  (X) Other modifications not specifically mentioned are naturally included in the scope of the present invention as long as they do not change the essential part of the present invention.

  For example, in the description of each embodiment described above, the integrally formed components may be integrally formed without joints, or a plurality of separate parts may be joined by bonding, welding, screwing, or the like. May be formed. Moreover, joining / fastening of a some component can be performed by various fastening means besides a volt | bolt.

  Specifically, for example, the first oil pan 140 and the second oil pan 150 may be configured integrally. Alternatively, the first oil pan 140 may be formed integrally with the cylinder block 120 as a so-called lower case.

  Further, the oil pan separator 161 and the reflux oil separator 162 may be independently configured as separate members and connected by bonding, screwing, or the like.

  (Xi) In addition, in each element constituting the means for solving the problems of the present invention, the elements expressed in terms of operation and function are the specific structures disclosed in the above-described embodiments and modifications. In addition, any structure capable of realizing the operation / function is included.

It is sectional drawing which notched a part of engine provided with the oil storage apparatus of one Embodiment of this invention. It is sectional drawing to which the periphery of the principal part of the inner plate shown by FIG. 1 was expanded. It is sectional drawing to which the periphery of the principal part of the inner plate shown by FIG. 1 was expanded. It is sectional drawing which expands and shows the structure of the modification of the elastic on-off valve shown by FIG. 1 thru | or FIG. It is a figure which expands and shows the structure of the other modification of the elastic on-off valve shown by FIG. Here, FIG. 5A is a side view, and FIG. 5B is a plan view. It is a top view which expands and shows the structure of the other modification of the elastic on-off valve shown by FIG. It is a top view which expands and shows the structure of the other modification of the elastic on-off valve shown by FIG. It is a top view which expands and shows the structure of the other modification of the elastic on-off valve shown by FIG. It is sectional drawing which shows the structure of the other modification of the elastic on-off valve shown by FIG. FIG. 10A is a plan view of the elastic on-off valve shown in FIG. FIG. 10B is a cross-sectional view of the elastic on-off valve shown in FIG. FIG. 10C is a cross-sectional view showing a state where the elastic on-off valve shown in FIG. 10B is pressed and elastically deformed.

Explanation of symbols

DESCRIPTION OF SYMBOLS 100 ... Engine 110 ... Cylinder head 120 ... Cylinder block 126 ... Oil strainer 126a ... Suction port 130 ... Oil storage device 131 ... Main storage chamber 132 ... Reservoir chamber 133 ... Reflux oil storage part 140 ... First oil pan 150 ... Second oil Pan 160 ... Inner plate 161 ... Oil pan separator 161a ... Oil pan separator bottom plate 161b ... Oil pan separator side plate 161f ... Drain hole 162 ... Reflux oil separator 162e ... Oil level gauge through-hole 162f ... Oil level gauge guide tube 171 ... Oil level gauge 171a ... Gauge part 172 ... Oil level gauge support sleeve 174 ... Elastic on-off valve 174a ... Projection part 174a1 ... Projection 174a2 ... Groove 174a3 ... Through hole 174a4 Holes 174b ... drain hole closed projections 177 ... oil change nozzles 177a ... end opening portion C ... central axis

Claims (17)

In an oil storage device configured to store oil for lubrication of a lubricated mechanism,
An oil pan capable of storing the oil in an inner space;
The space inside the oil pan is arranged in the space so as to be divided into a main storage chamber that opens toward the lubricated mechanism and a reservoir chamber adjacent to the main storage chamber, and the oil exchange An oil pan separator in which a drain hole is formed to connect the main storage chamber and the reservoir chamber so that the oil can exchange between the main storage chamber and the reservoir chamber,
The oil discharge port and / or the injection port in an oil changer configured to discharge the oil in the space inside the oil pan and / or to inject the oil into the space is configured. A guide part configured to support the nozzle and configured to guide the attachment and detachment of the nozzle;
Provided in the oil pan separator so as to face the guide part, and when the nozzle is supported while being guided by the guide part, the drain hole is opened by elastically deforming in contact with the nozzle. And an elastic on-off valve configured to substantially close the drain hole by restoring the elastic deformation when the support of the nozzle by the guide portion is released and the nozzle is separated, and
An oil storage device comprising: The oil storage device according to claim 1,
The guide portion includes an oil level gauge configured to display an oil level in the space according to the state of the oil attached to the tip portion by inserting the tip portion into the space; and the nozzle And an oil storage device characterized in that the oil level gauge can be selectively supported and can guide the attachment and detachment of the oil level gauge. The oil storage device according to claim 1 or 2,
The oil storage device, wherein the elastic on-off valve includes a tongue-like projecting portion projecting toward the reservoir chamber so as to intersect with an extension line from the guide portion toward the guide direction of the nozzle. The oil storage device according to claim 3,
The oil storage device according to claim 1, wherein the protruding portion is disposed to face the guide portion so as to be in contact with the nozzle when the nozzle is supported while being guided by the guide portion. The oil storage device according to claim 1 or 2,
The elastic on-off valve includes a tongue-like protrusion provided to face the guide portion so that the nozzle can come into contact with the nozzle when the nozzle is supported while being guided by the guide portion. Oil storage device. In an oil storage device configured to store oil for lubrication of a lubricated mechanism,
An oil pan capable of storing the oil in an inner space;
A bottom plate formed with a drain hole, which is a through hole, and a side plate connected to an edge of the bottom plate, and is surrounded by the bottom plate and the side plate and opens toward the lubrication target mechanism. An oil pan separator disposed in the space so as to divide the space inside the oil pan into a main storage chamber and a reservoir chamber adjacent to the main storage chamber;
The drain hole is provided on the bottom plate of the oil pan separator and can be opened by being elastically deformed by being pressed in a predetermined direction, and the drain hole can be opened by releasing the pressure and restoring the elastic deformation. An elastic on-off valve configured to substantially always close
An oil storage device comprising: The oil storage device according to claim 6,
The oil storage device according to claim 1, wherein the elastic on-off valve includes a tongue-like projecting portion that projects outward from the bottom plate toward the reservoir chamber. The oil storage device according to claim 6,
The oil discharge port and / or the injection port in an oil changer configured to discharge the oil in the space inside the oil pan and / or to inject the oil into the space is configured. A guide portion configured to support the nozzle and configured to guide the attachment and detachment of the nozzle;
When the nozzle is supported while being guided by the guide portion, the elastic on-off valve abuts against the nozzle and elastically deforms to open the drain hole and release the support of the nozzle by the guide portion. The oil storage device is arranged to face the guide portion so that the elastic deformation is restored when the nozzle is separated to substantially close the drain hole at all times. The oil storage device according to claim 8,
The guide portion includes an oil level gauge configured to display an oil level in the space according to the state of the oil attached to the tip portion by inserting the tip portion into the space; and the nozzle And is configured to be able to support either one of them,
The oil storage device, wherein the elastic on-off valve is configured to close the drain hole substantially always when the oil level gauge is supported by the guide portion instead of the nozzle. The oil storage device according to claim 8 or 9, wherein
The oil storage device according to claim 1, wherein the elastic on-off valve includes a tongue-like projecting portion that projects outward from the bottom plate toward the reservoir chamber. The oil storage device according to claim 10,
The oil storage device according to claim 1, wherein the protruding portion is provided so as to intersect with an extension line from the guide portion toward the guide direction of the nozzle. The oil storage device according to claim 10 or claim 11,
The oil storage device according to claim 1, wherein the protruding portion is disposed to face the guide portion so as to be in contact with the nozzle when the nozzle is supported while being guided by the guide portion. In an oil storage device configured to store oil for lubrication of a lubricated mechanism,
An oil pan capable of storing the oil in an inner space;
The space inside the oil pan is arranged in the space so as to be divided into a main storage chamber that opens toward the lubricated mechanism and a reservoir chamber adjacent to the main storage chamber, and the oil exchange An oil pan separator in which a drain hole is formed to connect the main storage chamber and the reservoir chamber so that the oil can exchange between the main storage chamber and the reservoir chamber,
The oil discharge port and / or the injection port in an oil changer configured to discharge the oil in the space inside the oil pan and / or to inject the oil into the space is configured. A guide portion configured to guide the attachment and detachment of the nozzle when the nozzle is attached to and detached from the oil storage device or the lubricated mechanism;
It is provided in the oil pan separator so as to face the guide part, and when the nozzle is mounted on the oil storage device or the lubricated mechanism while being guided by the guide part, it is in contact with the nozzle and is elastic. The drain hole can be opened by deformation, and the drain hole can be substantially closed by restoring the elastic deformation when the nozzle is detached and the nozzle is separated. An on-off valve;
An oil storage device comprising: In an oil storage device configured to store oil for lubrication of a lubricated mechanism,
An oil pan capable of storing the oil in an inner space;
The space inside the oil pan is arranged in the space so as to be divided into a main storage chamber that opens toward the lubricated mechanism and a reservoir chamber adjacent to the main storage chamber, and the oil exchange An oil pan separator in which a drain hole is formed to connect the main storage chamber and the reservoir chamber so that the oil can exchange between the main storage chamber and the reservoir chamber,
The oil discharge port and / or the injection port in an oil changer configured to discharge the oil in the space inside the oil pan and / or to inject the oil into the space is configured. A nozzle support configured to support the nozzle;
It is provided in the oil pan separator so as to face the nozzle support portion, and when the nozzle is supported by the nozzle support portion, the drain hole can be opened by abutting against the nozzle and elastically deforming. And an elastic on-off valve configured to substantially close the drain hole by restoring the elastic deformation when the nozzle support is released and the nozzle is separated from the nozzle support portion,
An oil storage device comprising: The oil storage device according to any one of claims 1 to 14,
In the elastic on-off valve, an unevenness or a through hole is formed at the position where the nozzle abuts so as to form the oil flow path between the tip of the nozzle and the surface of the elastic on-off valve. An oil storage device. The oil storage device according to any one of claims 1 to 15,
The oil storage device, wherein the elastic on-off valve includes a drain hole closing projection configured to be fitted into the drain hole. The oil storage device according to any one of claims 1 to 16,
The oil injection port provided in the lubricated mechanism and closed by the oil filler cap during operation communicates with the main storage chamber, so that the oil injected from the oil injection port can flow into the main storage chamber. Thus, the oil pan separator is configured as described above.

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