Heating system

Abstract

To provide a heating system for heating lubricating oil in a simple construction.SOLUTION: A heating system S stores lubricating oil 12 dropping from an engine 11 after lubricating the engine 11 while circling around a first pipeline 13 passing through the engine 11. It includes an oil pan 14 mounted on the lower part of the engine 11, a compressor 16 for compressing air, and a second pipeline 17 where compressed air supplied from the compressor 16 flows, and which is provided in a predetermined space including the oil pan 14 so that the lubricating oil 12 in the oil pan 14 and the compressed air can be heat-exchanged with each other.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a heating system for heating lubricating oil. [Background technology]

[0002] There are known techniques for heating the lubricating oil that lubricates the engine and the transmission. Patent Document 1 discloses a technique for heating the lubricating oil by exchanging heat between the lubricating oil supplied to a heat exchanger provided in a passage through which air compressed and heated by a compressor flows and the heated air. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] WO2018 / 020776 Summary of the Invention [Problem to be solved by the invention]

[0004] However, it was necessary to install a heat exchanger through which the lubricating oil flows in the passage through which the air compressed and heated by the compressor flows, and to install a pipeline through which the lubricating oil flows to the heat exchanger, making the structure of the system for heating the lubricating oil complex.

[0005] The present invention has been made in consideration of these points, and has an object to heat lubricating oil with a simple configuration. [Means for solving the problem]

[0006] In one aspect of the present invention, a heating system is provided having an oil pan attached to a lower part of the engine for storing lubricating oil that falls from the engine after circulating through a first pipeline passing through the engine and lubricating the engine, a compressor for compressing air, and a second pipeline provided in a specified space including the oil pan through which compressed air supplied from the compressor flows and which allows heat exchange between the lubricating oil in the oil pan and the compressed air.

[0007] The second pipeline may be provided so as to be in contact with an outer circumferential surface of the oil pan.

[0008] The second pipe may be provided so as to penetrate the oil pan and come into contact with the lubricating oil in the oil pan.

[0009] The oil pan may include a first oil pan and a second oil pan, the second oil pan having a smaller volume than the first oil pan, connected to the first oil pan, the lubricating oil that has lubricated the engine falling before the first oil pan, and the second pipeline may be arranged to contact an outer peripheral surface of the second oil pan.

[0010] The second pipeline may be provided in contact with outer peripheral surfaces of the first oil pan and the second oil pan, and the compressed air may flow through the second pipeline in a direction from the second oil pan toward the first oil pan.

[0011] The oil pan may include a first oil pan and a second oil pan, the second oil pan having a smaller volume than the first oil pan, connected to the first oil pan, the lubricating oil that has lubricated the engine falling before the first oil pan, and the second pipeline may be arranged to pass through the second oil pan and come into contact with the lubricating oil in the second oil pan.

[0012] The second pipeline may be arranged to penetrate the second oil pan and the first oil pan and be in contact with the lubricating oil in the first oil pan and the second oil pan, and the compressed air may flow through the second pipeline in a direction from the second oil pan toward the first oil pan.

[0013] The oil supply system may further include a valve that blocks the flow of the lubricating oil between the first oil pan and the second oil pan, and an operation control unit that controls the valve to block the flow of the lubricating oil between the first oil pan and the second oil pan when the compressed air is supplied to the second pipeline.

[0014] The air conditioner may further include an acquisition unit that acquires a temperature of the lubricant, and an operation control unit that operates the compressor to supply the compressed air to the second pipeline when the temperature of the lubricant is below a threshold value. Effect of the Invention

[0015] According to the present invention, it is possible to heat the lubricating oil with a simple configuration. [Brief description of the drawings]

[0016] [Figure 1] FIG. 2 is a diagram for explaining the configuration of a heating system. [Diagram 2] FIG. 2 is a diagram for explaining the configuration of a heating control device. [Diagram 3] FIG. 4 is a diagram for explaining the configuration of an oil pan for heating a portion of the lubricating oil. [Figure 4] FIG. 4 is a schematic diagram showing a state where a portion of the lubricating oil is circulated. [Diagram 5] FIG. 4 is a diagram for explaining a second pipe line passing through the first oil pan and the second oil pan. [Figure 6] 4 is a flowchart showing an example of a process in which a heating control device heats lubricant oil. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0017] [Configuration of heating system S] 1 is a diagram for explaining the configuration of a heating system S. The heating system S is a system that heats lubricating oil 12 that lubricates an engine 11. The heating system S is mounted on, for example, a vehicle or a ship. The engine 11 has a cylinder block 111. The cylinder block 111 has a cylinder 112, and a piston 113 is housed therein.

[0018] The lubricating oil 12 lubricates the cylinder 112 in the cylinder block 111 of the engine 11 while circulating through a first pipe 13 that passes through the engine 11. Specifically, the lubricating oil 12 forms an oil film between the cylinder 112 and the piston 113. The lubricating oil 12 forming the oil film lubricates the contact surfaces of the piston 113 and the cylinder 112, allowing the piston 113 to operate smoothly in the cylinder 112. After forming the oil film, the lubricating oil 12 drops from the cylinder block 111.

[0019] The oil pan 14 is integral with the cylinder block 111. The oil pan 14 is provided at the bottom of the engine 11. The oil pan 14 stores the lubricating oil 12 that drops from the cylinder block 111 located above. The pump 15 circulates the lubricating oil 12. Specifically, the pump 15 pumps up the lubricating oil 12 stored in the oil pan 14 and supplies it to the first pipeline 13.

[0020] The compressor 16 raises the temperature of the air by drawing in and compressing the air from the outside. The compressor 16 supplies the compressed air, which has been compressed to 100 degrees Celsius or higher, to the second pipeline 17. Specifically, the compressor 16 supplies the compressed air, which has been compressed to 100 degrees Celsius or higher and lower than 200 degrees Celsius, to the second pipeline 17. The compressor 16 is, for example, a centrifugal compressor, but is not limited thereto.

[0021] The second pipe 17 is provided so that the compressed air supplied from the compressor 16 flows through it. The second pipe 17 is provided in a predetermined space including the oil pan 14, and the compressed air flowing through the second pipe 17 can exchange heat with the lubricating oil 12 in the oil pan 14. Specifically, the second pipe 17 is provided so as to penetrate the oil pan 14 and contact the lubricating oil 12 in the oil pan 14. The second pipe 17 is provided so as to pass through the inside of the oil pan 14. The second pipe 17 is also provided so that at least a part of the second pipe 17 comes into contact with the lubricating oil 12 stored in the oil pan 14 during operation of the engine 11 or during operation of the heating system S. As a result, the second pipe 17 and the lubricating oil 12 in the oil pan 14 come into direct contact with each other, and therefore the compressed air and the lubricating oil 12 in the oil pan 14 can exchange heat only through the outer circumferential surface of the second pipe 17.

[0022] The second pipeline 17 may be provided so as to be in contact with the outer peripheral surface of the oil pan 14, instead of penetrating the oil pan 14. This allows heat exchange between the compressed air and the lubricating oil 12 in the oil pan 14 via the outer peripheral surface of the oil pan 14 and the outer peripheral surface of the second pipeline 17. In this way, the heating system S can exchange heat between the compressed air and the lubricating oil 12 with a simpler configuration than when the second pipeline 17 penetrates the oil pan 14.

[0023] The temperature sensor 18 detects the temperature of the lubricating oil 12 flowing through the first pipeline 13. The temperature sensor 18 is, for example, a thermocouple or a thermistor, but is not limited to these. The temperature sensor 18 detects the temperature of the lubricating oil 12 at a predetermined time interval. The time interval may be set appropriately, and a specific value of the time interval is, for example, 100 milliseconds. The temperature sensor 18 outputs the detected temperature of the lubricating oil 12 to the heating control device 2.

[0024] The heating control device 2 heats the lubricating oil 12 based on the temperature of the lubricating oil 12 detected by the temperature sensor 18. FIG. 2 is a diagram for explaining the configuration of the heating control device 2. The heating control device 2 has a storage unit 21 and a control unit 22. The storage unit 21 is a storage medium including a ROM (Read Only Memory), a RAM (Random Access Memory), a hard disk, etc. The storage unit 21 stores a program executed by the control unit 22.

[0025] The control unit 22 is a computational resource including a processor such as a CPU (Central Processing Unit). The control unit 22 executes a program stored in the storage unit 21 to realize functions as an acquisition unit 221 and an operation control unit 222.

[0026] The acquisition unit 221 acquires the temperature of the lubricant 12 detected by the temperature sensor 18. The acquisition unit 221 acquires the temperature of the lubricant 12 every time the temperature sensor 18 outputs the temperature of the lubricant 12 at a predetermined time interval.

[0027] When the temperature of the lubricating oil 12 is below a threshold value, the operation control unit 222 operates the compressor 16 to supply compressed air to the second pipeline 17. The threshold value is determined in advance as a temperature at which the lubricating oil 12 can adequately lubricate the engine 11. A specific value of the threshold value is, for example, 60 degrees Celsius, but is not limited thereto. In this manner, the operation control unit 222 can supply the compressed air, which has been heated by compression and is now hotter than the outside air, to the second pipeline. This allows the heating system S to exchange heat between the lubricating oil 12 stored in the oil pan 14 and the compressed air, which is hotter than the outside air. As a result, the temperature of the lubricating oil 12 increases.

[0028] The heating system S according to the embodiment can heat the lubricating oil 12 simply by providing a second pipeline 17 through which compressed air with a higher temperature than the outside air flows in a predetermined space including an oil pan 14 that stores the lubricating oil 12. Therefore, the heating system S can heat the lubricating oil 12 with a simple configuration without providing a heat exchanger through which the lubricating oil 12 flows in a pipeline through which the compressed air flows, or providing a pipeline through which the lubricating oil 12 flows to the heat exchanger.

[0029] The operation control unit 222 stops the compressor 16 when the temperature of the lubricating oil 12 is equal to or higher than the threshold value. Specifically, the operation control unit 222 stops the compressor 16 when the temperature of the lubricating oil 12 becomes equal to or higher than the threshold value after operating the compressor 16. This enables the operation control unit 222 to suppress a decrease in the viscosity of the lubricating oil 12 caused by overheating of the lubricating oil 12. As a result, poor formation of an oil film caused by a decrease in the viscosity of the lubricating oil 12 is suppressed.

[0030] (Oil pan 14 configuration) However, when heating the entire amount of the lubricating oil 12, a large amount of heat is required, so it takes more time to raise the temperature of the lubricating oil 12 to a threshold value or higher. Therefore, the heating system S circulates a portion of the lubricating oil 12 to heat the circulating portion of the lubricating oil 12. As a result, the heating system S raises the temperature of the circulating lubricating oil 12 to a threshold value or higher faster than when the entire amount of the lubricating oil 12 is heated. The configuration of the oil pan 14 for heating a portion of the lubricating oil 12 will be described below. FIG. 3 is a diagram for describing the configuration of the oil pan 14 for heating a portion of the lubricating oil 12. The oil pan 14 in FIG. 3 includes a first oil pan 141 and a second oil pan 142.

[0031] In FIG. 3, the first oil pan 141 is indicated by a dashed line. The second oil pan 142 is indicated by a two-dot dashed line. The second oil pan 142 has a smaller volume than the first oil pan 141. The second oil pan 142 is provided at a position where the lubricating oil 12 that lubricates the engine 11 falls before the first oil pan 141. Specifically, the second oil pan 142 is provided vertically above the first oil pan 141. The second oil pan 142 is connected to the first oil pan 141 by a through hole 145. The through hole 145 is provided at an end of the bottom surface of the second oil pan 142. The bottom surface of the second oil pan 142 is inclined so that the end side where the through hole 145 is formed is lower. As a result, the lubricating oil 12 that falls into the second oil pan 142 flows toward the through hole 145.

[0032] When the lubricating oil 12 drops into the second oil pan 142, it flows toward the through-hole 145, drops from the through-hole 145 into the first oil pan 141, and is stored in the first oil pan 141. The lubricating oil 12 stored in the first oil pan 141 is pumped up by the pump 15, and then supplied to the engine 11 through the first pipe 13. Then, after lubricating the cylinders 112 of the cylinder block 111, the lubricating oil 12 drops again into the second oil pan 142. In this way, when the through-hole 145 is open, the entire amount of the lubricating oil 12 circulates to lubricate the engine 11.

[0033] When the temperature of the lubricating oil 12 is less than the threshold value, the operation control unit 222 circulates a part of the lubricating oil 12. FIG. 4 is a schematic diagram showing a case where a part of the lubricating oil 12 is circulated. The operation control unit 222 circulates a part of the lubricating oil 12 by blocking the flow of the lubricating oil 12 between the first oil pan 141 and the pump 15 and the flow of the lubricating oil 12 between the first oil pan 141 and the second oil pan 142. The operation control unit 222 controls the flow of the lubricating oil 12 by moving the valve 144 and the valve 143 by controlling the actuator 19. Specifically, the operation control unit 222 blocks the flow of the lubricating oil 12 between the first oil pan 141 and the pump 15 by operating the actuator 19 to move the valve 144 and cause the valve 144 to close the communication hole 146. In addition, the operation control unit 222 operates the actuator 19 to move the valve 143 and cause the valve 143 to close the through hole 145, thereby blocking the flow of lubricating oil 12 between the first oil pan 141 and the second oil pan 142.

[0034] The operation control unit 222 blocks the flow of lubricating oil 12 between the first oil pan 141 and the second oil pan 142, and at the same time opens the flow between the second oil pan 142 and the pump 15. Specifically, the operation control unit 222 operates the valve 143 to close the through hole 145 and to open the connection hole 147 connecting the second oil pan 142 and the third pipeline 121.

[0035] When the communication hole 146 is blocked, the lubricating oil 12a stored in the first oil pan 141 continues to be stored in the first oil pan 141 without being pumped up by the pump 15. In addition, the lubricating oil 12b that falls into the second oil pan 142 after the through hole 145 is blocked does not fall into the first oil pan 141 but is stored in the second oil pan 142. The lubricating oil 12b stored in the second oil pan 142 is supplied to the pump 15 from the third pipe 121 that connects the second oil pan 142 and the pump 15. This allows the heating system S to circulate the lubricating oil 12b, which is a part of the lubricating oil 12, when the temperature of the lubricating oil 12 is below the threshold value. As a result, the heating system S can increase the temperature of the lubricating oil 12b with less heat than when the entire lubricating oil 12 circulates through the engine 11. This also allows the heating system S to warm up the engine 11 in a shorter time.

[0036] When the temperature of the lubricating oil 12 is equal to or higher than the threshold value, the operation control unit 222 opens the communication hole 146, opens the through hole 145, and closes the connection hole 147. Specifically, the operation control unit 222 operates the valve 144 to open the communication hole 146, and operates the valve 143 to open the through hole 145 and close the connection hole 147. Then, the operation control unit 222 stops the compressor 16. This makes it possible for the operation control unit 222 to suppress a decrease in the viscosity of the lubricating oil 12 due to overheating of the lubricating oil 12.

[0037] (Configuration of second pipeline 17) When the oil pan 14 includes the first oil pan 141 and the second oil pan 142, the second pipe 17 is provided so as to penetrate the second oil pan 142 and the first oil pan 141 and to contact the lubricating oil 12 in the second oil pan 142 and the first oil pan 141. FIG. 5 is a diagram for explaining the second pipe 17 penetrating the first oil pan 141 and the second oil pan 142. As shown in FIG. 5, the second pipe 17 is inserted into the second oil pan 142 from the side surface of the second oil pan 142. The second pipe 17 is the bottom surface of the second oil pan 142 and is inserted into the first oil pan 14 from the top surface of the first oil pan 14. The second pipe 17 comes out of the first oil pan 14 from the side surface of the first oil pan 14.

[0038] The compressor 16 supplies compressed air to the second pipeline 17 so that the air flows from the second oil pan 142 to the first oil pan 141. The compressed air supplied to the second pipeline 17 flows through the second pipeline 17 in a direction from the second oil pan 142 to the first oil pan 141. In this manner, the compressed air first exchanges heat with the lubricating oil 12b in the second oil pan 142, and then exchanges heat with the lubricating oil 12a in the first oil pan 141. As a result, the compressed air can exchange heat not only with the lubricating oil 12b in the second oil pan 142, but also with the lubricating oil 12a in the first oil pan 141. As a result, the heating system S can also heat the lubricating oil 12a that is not circulating in the first oil pan 141, so that the temperature difference between the lubricating oil 12a in the first oil pan 141 and the lubricating oil 12b in the second oil pan 142 can be reduced. As a result, the heating system S can reduce the temperature change of the lubricating oil 12 when the lubricating oil 12 is allowed to flow between the first oil pan 141 and the second oil pan 142.

[0039] The second pipeline 17 may be provided so as to be in contact with the outer peripheral surfaces of the first oil pan 141 and the second oil pan 142. In this case, the second pipeline 17 is in contact with the outer peripheral surface of the second oil pan 142 on the upstream side of the compressed air flow, and is in contact with the outer peripheral surface of the first oil pan 141 on the downstream side of the compressed air flow. The heating system S can exchange heat between the compressed air and the lubricating oil 12 with a simpler configuration than the case where the second pipeline 17 penetrates the oil pan 14.

[0040] The second pipeline 17 may be provided so as to be in contact only with the outer circumferential surface of the second oil pan 142, without being in contact with the outer circumferential surface of the first oil pan 141. The second pipeline 17 may also be provided so as to penetrate the second oil pan 142 and be in contact only with the lubricating oil 12 in the second oil pan 142. In this manner, the heating system S can heat the lubricating oil 12b in the second oil pan 142 with a simpler configuration than when the second pipeline 17 is in contact with both the first oil pan 141 and the second oil pan 142, or when the second pipeline 17 is in contact with both the first oil pan 141 and the second oil pan 142.

[0041] [Process for heating the lubricating oil 12] Fig. 6 is a flowchart showing an example of a process performed by the heating control device 2 to heat the lubricating oil 12. The flowchart in Fig. 6 is executed when the engine 11 is started (for example, during a cold start).

[0042] The acquisition unit 221 acquires the temperature of the lubricant 12 (step S1). The operation control unit 222 determines whether the temperature of the lubricant 12 is less than a threshold value (step S2). If the temperature of the lubricant 12 is equal to or greater than the threshold value (No in step S2), the operation control unit 222 ends the process.

[0043] If the temperature of the lubricating oil 12 is less than the threshold value (Yes in step S2), the operation control unit 222 blocks the flow of the lubricating oil 12 between the first oil pan 141 and the second oil pan 142 (step S3). Specifically, the operation control unit 222 moves the valve 143 to close the through-hole 145, and moves the valve 144 to close the communication hole 146. Then, the operation control unit 222 operates the compressor 16 (step S4). Note that step S4 may be performed before step S3, or steps S3 and S4 may be performed in parallel.

[0044] The compressor 16 supplies compressed air to the second pipeline 17. The compressed air flowing through the second pipeline 17 exchanges heat with the lubricating oil 12 stored in the second oil pan 142. At this time, since the temperature of the compressed air is higher than the temperature of the lubricating oil 12, the heat of the compressed air is transferred to the lubricating oil 12, and the temperature of the lubricating oil 12 increases.

[0045] The acquisition unit 221 acquires the post-shield temperature of the lubricant 12 after the flow of the lubricant 12 between the first oil pan 141 and the second oil pan 142 is blocked (step S5). The operation control unit 222 determines whether the post-shield temperature is equal to or higher than a threshold (step S6). If the post-shield temperature is less than the threshold (No in step S6), the operation control unit 222 waits until the post-shield temperature becomes equal to or higher than the threshold.

[0046] When the post-shield temperature is equal to or higher than the threshold value (Yes in step S6), the operation control unit 222 opens the flow of lubricating oil 12 between the first oil pan 141 and the second oil pan 142 (step S7). Specifically, the operation control unit 222 moves the valve 143 to open the through hole 145, and moves the valve 144 to open the communication hole 146. Then, the operation control unit 222 stops the compressor 16 (step S8). Note that step S8 may be performed before step S7, or steps S7 and S8 may be performed in parallel.

[0047] (Modification) As described above, the process of heating the lubricant 12 is executed when the temperature of the lubricant 12 is below the threshold value during cold start of the engine 11, and is terminated when the temperature of the lubricant 12 is equal to or higher than the threshold value. However, the process of heating the lubricant 12 may be executed when the temperature of the lubricant 12 becomes below the threshold value while the engine 11 is started. In other words, the heating control device 2 acquires the temperature of the lubricant 12 at a predetermined time interval while the engine 11 is started, starts the compressor 16 to heat the lubricant 12 when the acquired temperature of the lubricant 12 is below the threshold value, and stops the compressor 16 to stop heating the lubricant 12 when the temperature of the lubricant 12 is below the threshold value. In this way, the heating control device 2 can heat the lubricant 12 not only immediately after the start of the engine 11, but also when, for example, the output of the engine 11 is reduced during idling when the engine 11 is operating without load, or when the vehicle equipped with the heating system S is traveling downhill and the temperature of the lubricant 12 is reduced.

[0048] [Effects of Heating System S] As described above, the heating system S supplies compressed air to the second pipe 17 provided in a predetermined space including the oil pan 14 so that the lubricating oil 12 in the oil pan 14 attached to the lower part of the engine 11 can be heat-exchanged with the compressed air after the lubricating oil 12 has fallen from the engine 11 after circulating through the first pipe 13 passing through the engine 11. As a result, the heating system S exchanges heat between the lubricating oil 12 and the compressed air, whose temperature has risen and become higher than that of the air. In other words, the heating system S can heat the lubricating oil 12 with a simpler configuration than providing a heat exchanger through which the lubricating oil 12 flows in a passage through which the compressed air flows, or providing a pipe through which the lubricating oil 12 flows to the heat exchanger. Since the heating system S can heat the engine 11 by circulating the warmed lubricating oil 12, the time required for warming up the engine 11 can be shortened compared to when compressed air is not supplied.

[0049] Although the present invention has been described above using the embodiments, the technical scope of the present invention is not limited to the scope described in the above embodiments, and various modifications and changes are possible within the scope of the gist of the present invention. For example, all or part of the device can be configured by distributing or integrating functionally or physically in any unit. In addition, new embodiments resulting from any combination of multiple embodiments are also included in the embodiments of the present invention. The effect of the new embodiment resulting from the combination combines the effect of the original embodiment. [Explanation of symbols]

[0050] S Heating System 11 Engine 12 Lubricating oil 13 1st pipeline 14 Oil pan 15 Pump 16 Compressor 17 2nd pipeline 18 Temperature Sensor 111 Cylinder block 112 cylinders 121 3rd pipeline 141 First oil pan 142 No. 2 oil pan 143 Valve 144 Valve 145 Through hole 146 Communication hole 147 Connection hole 2 Heating control device 21 Memory section 22 Control section 221 Acquisition Department 222 Motion control section

Claims

1. an oil pan attached to a lower portion of the engine for storing lubricating oil that drops from the engine after circulating through a first pipe passing through the engine and lubricating the engine; A compressor for compressing air; a second pipe provided in a predetermined space including the oil pan through which compressed air supplied from the compressor flows and which allows heat exchange between the lubricating oil in the oil pan and the compressed air; A heating system having

2. The second pipe is provided so as to be in contact with an outer circumferential surface of the oil pan. The heating system of claim 1 .

3. The second pipe is provided so as to penetrate the oil pan and contact the lubricating oil in the oil pan. The heating system of claim 1 .

4. The oil pan includes a first oil pan and a second oil pan, The second oil pan has a smaller volume than the first oil pan, is connected to the first oil pan, and the lubricating oil that has lubricated the engine falls before the first oil pan; The second pipeline is provided so as to be in contact with an outer circumferential surface of the second oil pan. The heating system of claim 1 .

5. the second pipeline is provided in contact with an outer circumferential surface of the first oil pan and an outer circumferential surface of the second oil pan, The compressed air flows through the second pipeline in a direction from the second oil pan toward the first oil pan. The heating system of claim 4.

6. The oil pan includes a first oil pan and a second oil pan, The second oil pan has a smaller volume than the first oil pan, is connected to the first oil pan, and the lubricating oil that has lubricated the engine falls before the first oil pan; The second pipe is provided so as to penetrate the second oil pan and contact the lubricating oil in the second oil pan. The heating system of claim 1 .

7. the second pipe is provided so as to penetrate the second oil pan and the first oil pan and to contact the lubricating oil in the first oil pan and the second oil pan, The compressed air flows through the second pipeline in a direction from the second oil pan toward the first oil pan. The heating system of claim 6.

8. a valve that blocks the flow of the lubricating oil between the first oil pan and the second oil pan; and an operation control unit that controls the valve to block the flow of the lubricating oil between the first oil pan and the second oil pan when the compressed air is supplied to the second pipeline. A heating system according to any one of claims 4 to 7.

9. An acquisition unit for acquiring the temperature of the lubricant; and an operation control unit that operates the compressor to supply the compressed air to the second pipeline when the temperature of the lubricating oil is less than a threshold value. A heating system according to any one of claims 1 to 7.

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