JPH08193920A - Cooler for lubricant - Google Patents

Abstract

PURPOSE: To obtain a lubricant cooler for engine or transmission in which the structure is simplified and installation thereof is facilitated along with regulation of the cooling capacity. CONSTITUTION: The drain plug 1b for the oil 1a of an engine 1 is coupled through an oil path 5 with a cylinder mechanism 10. First and second water paths 15, 16 on the water supply side are coupled, such that they can be switched, through solenoid valves 13, 14 to the opposite sides of a piston 11a in the cylinder 11b of a second cylinder mechanism 11 for driving the first cylinder mechanism 10. Water passed through the second water path 16 is fed to an oil cooler 7 disposed in the oil path 5.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lubricating oil cooling device for engines and transmissions used for vehicle interior tests and the like.

[0002]

2. Description of the Related Art When an engine or transmission used in an automobile or the like is tested in a laboratory, there is no air flow because the engine and the transmission are operated in a stopped state, which is different from when the vehicle is actually running. In particular, the heat generated by mechanical loss is transmitted to the lubricating oil in the engine and transmission and is dissipated from the engine oil pan, etc., but this heat dissipation is less than in actual driving, and the temperature of the lubricating oil has increased. .

Therefore, conventionally, the following measures have been taken to lower the temperature of the lubricating oil. First, in FIG. 5, 1 is an engine, 1 a is an oil pan provided below the engine 1 and stores lubricating oil of the engine 1, 2 is a transmission, and 3 is a cooling fan. The lubricating oil of the engine 1 was cooled by sending cooling air. Further, in the case of FIG. 6, the water from the shower 4 is applied to the oil pan 1a to cool the lubricating oil by the heat of vaporization of the water. Further, in the case of FIG. 7, both ends of the oil passage 5 are connected to the oil pan 1a, and a pump 6 and an oil cooler 7 are provided in the oil passage 5 so that the lubricating oil in the oil pan 1a is pumped by the pump 6. It was sucked out, cooled in the oil cooler 7 by the cooling water passing through the water passage 8, and returned to the oil pan 1a again.

[0004]

However, in the case of FIG. 5, the cooling fan 3 is used when the load of the engine 1 is light.
Although a small amount of air is required, when the load of the engine 1 becomes high, a large amount of air is required, and the cooling fan 3 becomes large and expensive. In the case of FIG. 6, although the structure is simple, a saucer 9 for receiving water after it has been applied to the oil pan 1a is required, and the saucer 9 must be created according to the size and shape of the oil pan 1a. In addition, since it has to be installed in a limited place under the engine 1, it takes a lot of labor and time to install the saucer 9. Further, in the case of FIG. The temperature of the lubricating oil can be adjusted by changing the cooling state in the oil cooler 7, which is highly useful, but requires the pump 6 and the drain plug 1b provided in advance in the oil pan 1a.
Besides, a hole for connecting the oil passage 5 must be provided, which is not easy to manufacture and expensive.

The present invention has been made in order to solve the above problems, does not require a cooling fan, a pan or a pump, has a simple structure and is inexpensive, and requires an extra hole in an engine or a transmission. The purpose of the present invention is to obtain a lubricating oil cooling device that is easy to install without any problems.

[0006]

According to a first aspect of the present invention, there is provided a lubricating oil cooling device including a first cylinder mechanism connected to a drain plug of an engine oil pan via an oil passage, and a first cylinder. A second cylinder mechanism housed in a piston that drives the mechanism, and a first water passage and a second water passage on the water supply side are switchably connected to both sides of the piston in the cylinder, and an oil passage. An oil cooler is provided which cools the lubricating oil from the oil pan with the cooling water from the second water passage.

A lubricating oil cooling device according to a second aspect of the present invention is connected to a drain plug of an oil pan of an engine through an oil passage so that a piston is housed in a cylinder and an oil passage connecting side of the piston in the cylinder. A third cylinder mechanism, in which a spring for pressing the piston is housed, and a first water passage and a second water passage on the water supply side are switchably connected to the other side of the piston in the cylinder, and an oil passage Provided, second
An oil cooler for cooling the lubricating oil from the oil pan with the cooling water from the water passage is provided.

According to another aspect of the lubricating oil cooling device of the present invention, a first cylinder mechanism connected to a drain plug of an engine oil pan via an oil passage and a piston for driving the first cylinder mechanism are provided in the cylinder. A second cylinder mechanism that is housed and connected to both sides of the piston in the cylinder so that the compressed air side and the exhaust side can be switched, and an oil passage that is provided to cool the lubricating oil from the oil pan with the cooling water. It is provided with an oil cooler.

According to another aspect of the lubricating oil cooling device of the present invention, the first cylinder mechanism connected to the oil pan supply port of the transmission of the vehicle through the oil passage and the piston for driving the first cylinder mechanism are in the cylinder. And a second cylinder mechanism in which the first water passage and the second water passage on the water supply side are switchably connected to both sides of the piston in the cylinder, and the second passage is provided in the oil passage. An oil cooler for cooling the lubricating oil from the oil supply port with the cooling water from the water passage is provided.

A lubricating oil cooling device according to a fifth aspect is connected to an oil supply port of a vehicle transmission via an oil passage, and a piston is housed in a cylinder.
A spring for pressing the piston is housed in the oil passage connection side of the piston in the cylinder, and a first water passage and a second water passage on the water supply side are switchably connected to the other side of the piston in the cylinder. The third cylinder mechanism and an oil cooler provided in the oil passage for cooling the lubricating oil from the oil supply port with the cooling water from the second water passage are provided.

According to a sixth aspect of the present invention, there is provided a lubricating oil cooling device in which a first cylinder mechanism connected to an oil supply port of a transmission of a vehicle via an oil passage and a piston for driving the first cylinder mechanism are provided in the cylinder. A second cylinder mechanism that is housed and connected to both sides of the piston in the cylinder so that the compressed air side and the exhaust side can be switched respectively, and an oil passage that is provided in the oil passage to cool the lubricating oil from the oil supply port. It is provided with an oil cooler.

[0012]

According to the present invention, when one side of the piston of the second cylinder mechanism is connected to the water supply side and the other side is connected to the oil cooler side, the piston of the second cylinder mechanism is driven. , The first cylinder mechanism is driven. As a result, the lubricating oil in the oil pan or the transmission is introduced into the first cylinder mechanism via the oil passage, and at this time, is cooled by the cooling water from the second cylinder mechanism in the oil cooler. When one side of the piston of the second cylinder mechanism is connected to the oil cooler side and the other side is connected to the water supply side, the first cylinder mechanism is driven in the opposite direction and the lubricating oil is cooled again. And is cooled by the cooling water from the second cylinder mechanism.

In the second and fifth aspects, when the other side of the piston of the third cylinder mechanism is connected to the oil cooler side, the piston is pressed by the spring to move, and the lubricating oil in the oil pan or the transmission is moved. Is sucked toward the third cylinder mechanism side and cooled by the cooling water from the third cylinder mechanism when passing through the oil cooler. When the other side of the piston of the third cylinder mechanism is connected to the water supply side,
The piston moves against the spring and the lubricating oil returns through the oil cooler into the oil pan or transmission.

In the third and sixth aspects, when the compressed air is supplied to one side of the piston of the second cylinder mechanism and the other side is exhausted, the first cylinder mechanism is driven through the piston and the oil is discharged. Lubricating oil in the pan or transmission is sucked into the first cylinder mechanism via the oil cooler and is cooled by the cooling water at this time. When the connection of the second cylinder mechanism is reversed, the first cylinder mechanism is driven in the reverse direction, and the lubricating oil passes through the oil cooler again and returns to the oil pan or transmission, where it is cooled by the cooling water again. To be done.

[0015]

【Example】

Embodiment 1 Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG.
Shows a configuration of a lubricating oil cooling device according to the embodiment, and 10 is a first cylinder mechanism connected to a drain plug 1b of an oil pan 1a through an oil passage 5, and a piston 10a is housed in a cylinder 10b. There is. Reference numeral 11 is a second cylinder mechanism in which a piston 11a connected to a piston 10a of the first cylinder mechanism 10 via a connecting shaft 12 is housed in a cylinder 11b, and both sides of the cylinder 11a in the cylinder 11b are respectively provided. A first water passage 15 connected to the water supply side and a second water passage 16 connected to the oil cooler 7 side are switchably connected via solenoid valves 13 and 14. Reference numeral 17 is a throttle for adjusting the flow rate of water, and 18 is a strainer for filtering solid matters and the like. An oil cooler 7 is provided in the oil passage 5, and the oil cooler 7 is cooled by the water from the second water passage 16. That is, the second water passage 16 is connected to the water passage 19 passing through the oil cooler 7, and further connected to the water passage 20 for drainage.

In the above structure, the right side portion of the piston 11a in the cylinder 11b is connected to the second water passage 16 via the solenoid valve 13, and the left side portion of the piston 11a is connected to the first water passage via the solenoid valve 14. When connected to the passage 15, water flows into the left side portion and flows out from the right side portion. Therefore, the pistons 11a and 10a move to the right, and the lubricating oil in the oil pan 1a flows into the cylinder 10b via the oil passage 5 and the oil cooler 7. At this time, the lubricating oil is cooled by the water in the cylinder 11b in the oil cooler 7.

Next, the solenoid valves 13 and 14 are switched to connect the right side portion of the piston 11a to the first water passage 15 via the solenoid valve 13 and the left side portion of the piston 11a to the first water passage 15 via the solenoid valve 14. When connected to the water passage 16 of 2,
Water flows into the right side portion and flows out from the left side portion. Therefore, the pistons 11a and 10a move to the left and the cylinder 1
The lubricating oil in 0b returns to the oil pan 1b through the oil cooler 7 and the oil passage 5, and at this time, the lubricating oil is cooled in the oil cooler 7 by the water from the left side portion of the piston 11a.

In the first embodiment, the cylinder mechanisms 10 and 11 are driven by the pressure of the water supply and the cooling water is supplied, so that no special power equipment or saucer is required, and the structure is simple and the cost is low. . Further, the oil passage 5 need only be connected to the drain plug 1b provided in advance, and it is not necessary to provide a special hole in the oil pan 1b, which facilitates the installation. Furthermore, the cooling capacity can be easily adjusted by adjusting the number of reciprocations of the piston 10a per hour.

Second Embodiment FIG. 2 shows the construction of a lubricating oil cooling device according to a second embodiment.
Reference numeral 1 is a third cylinder mechanism connected to the drain plug 1b through an oil passage 5, and the piston 21a is connected to the cylinder 2
1b, a spring 21c for pressing the piston 21a is housed in the oil passage 5 connection side of the piston 21a in the cylinder 21b, and the other side of the piston 21a is connected to the first side of the water supply side via the solenoid valve 13. The first water passage 15 and the second water passage 16 on the oil cooler 7 side are switchably connected. A second water passage 16 passes through the oil cooler 7 provided in the oil passage 5 and is connected to the water passage 20.

In the above structure, when the right side portion of the piston 21a in the cylinder 21b is connected to the second water passage 16 via the solenoid valve 13, water flows out from this right side portion,
The piston 21a is pressed by the spring 21c to move to the right, and the lubricating oil in the oil pan 1a flows into the left side portion of the piston 21a in the cylinder 21b via the oil passage 5 and the oil cooler 7. At this time, the lubricating oil is cooled by the water from the second water passage 16 in the oil cooler 7.

Next, the solenoid valve 13 is switched to change the piston 2
When the right side portion of 1a is connected to the first water passage 15, water flows into this right side portion. Therefore, the piston 21a moves right against the spring 21c, and the lubricating oil in the left side portion of the piston 21a returns to the oil pan 1a via the oil cooler 7 and the oil passage 5, and at this time as well, the lubricating oil Is cooled in the oil cooler 7.

Also in the second embodiment, the lubricating oil is taken out from the oil pan 1a, returned and cooled by utilizing the water supply pressure, and only one cylinder mechanism 21 needs to be provided, which is simple in construction and inexpensive. Becomes Also, the oil pan 1a
Installation is easy because there is no need to provide a special hole in. Further, the cooling capacity can be adjusted by adjusting the number of times the third cylinder mechanism 21 is driven per hour.

Embodiment 3 FIG. 3 shows the construction of a lubricating oil cooling device according to Embodiment 3, in which the first and second cylinder mechanisms 10 and 11 are provided in the same manner as in Embodiment 1, except that the second cylinder mechanism is used. In the cylinder mechanism 11, the check valve 22 and the throttle 17 are connected in parallel and the solenoid valve 23 is provided on both sides of the piston 11a in the cylinder 11b.
It is switchably connected to the compressed air side and the exhaust side via. Also, the oil cooler 7 provided in the oil passage 5 is the water passage 1
It is connected via 9 and 20 to the water supply side and the drainage side.

In the above structure, by switching the solenoid valve 23, when the left side portion of the piston 11a in the cylinder 11b is connected to the compressed air side and the right side portion is connected to the exhaust side, the compressed air flows into this left side portion. , Spill out from the right part. Therefore, the pistons 11a and 10a move to the right, the lubricating oil in the oil pan 1a flows into the cylinder 10b through the oil passage 5 and the oil cooler 7, and is cooled by the cooling water in the oil cooler 7.

Next, the cylinder 1 is switched by switching the solenoid valve 23.
When compressed air flows into the right side of the piston 11a in 1b and flows out from the left side portion, the pistons 11a and 10a move left and the lubricating oil in the cylinder 10b returns to the oil pan 1a. At this time, the lubricating oil is cooled in the oil cooler 7.

The third embodiment is used when the water pressure and the like of the equipment is low, and the cylinder mechanisms 10 and 11 are driven by compressed air to take out and return the lubricating oil. It can be simple and inexpensive. Further, it is not necessary to provide a special hole in the oil pan 1a, and the installation is easy. Further, the second cylinder mechanism 1
The cooling capacity can be adjusted by the number of times of driving per hour.

Embodiments 4 to 6 FIGS. 4 (a) and 4 (b) are block diagrams of a lubricating oil cooling device according to Embodiments 4 to 6 and an enlarged sectional view taken along the line AA, and 2a is an oil supply port of a transmission. , 24 are shown in FIGS.
The lubricating oil cooling device shown in FIG. That is, instead of the drain plug 1b of the oil pan 1a of the engine 1, the devices of Examples 1 to 3 are connected to the oil supply port 2a of the transmission 2 via the oil passage 5. 25 is a lubricating oil in the transmission 2.

Therefore, in the fourth to sixth embodiments, the lubricating oil in the transmission 2 can be cooled, and its configuration and operation are the same as those of the first to third embodiments. The effect is also similar to that of the first to third embodiments, except that it is not necessary to provide a special hole in the transmission 2 in place of the oil 1a.

[0029]

As described above, according to the first and the fourth aspects of the present invention, the lubricating oil for the engine oil pan or the transmission is taken out, cooled and returned by utilizing the water supply pressure, and the construction is simple. It can be cheap.
Further, it is not necessary to provide a special hole in the engine oil pan or the transmission, and the installation is easy. further,
It is possible to easily adjust the cooling capacity by adjusting the number of times the cylinder mechanism is driven.

According to the second and fifth aspects, the number of the cylinder mechanism is one, and the structure can be further simplified.
Other effects are the same as those in claims 1 and 4.

According to the third and sixth aspects, in consideration of the case where the water supply pressure is low, the lubricating oil is taken out and returned by using compressed air, which is separated from the cooling of the lubricating oil. It can be simple and inexpensive. Other effects are the same as those in claims 1 and 4.

[Brief description of drawings]

FIG. 1 is a configuration diagram of a lubricating oil cooling device according to a first embodiment of the present invention.

FIG. 2 is a configuration diagram of a lubricating oil cooling device according to a second embodiment.

FIG. 3 is a configuration diagram of a lubricating oil cooling device according to a third embodiment.

FIG. 4 is a configuration diagram of a lubricating oil cooling device according to Examples 4 to 6 and an enlarged sectional view taken along the line AA.

FIG. 5 is a configuration diagram of a conventional device.

FIG. 6 is a configuration diagram of another conventional device.

FIG. 7 is a configuration diagram of still another conventional device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Engine 1a ... Oil pan 1b ... Drain plug 2 ... Transmission 2a ... Oil supply port 5 ... Oil passage 7 ... Oil cooler 10,11, 21 ... Cylinder mechanism 10a, 11a, 21a ... Piston 10b, 11b, 21b ... Cylinder 13, 14, 23 ... Solenoid valves 15, 16 ... Water passage 21c ... Spring 24 ... Device shown in FIGS.

Claims (6)

[Claims] 1. A first cylinder mechanism connected to a drain plug of an engine oil pan via an oil passage, and a first cylinder mechanism.
And a second cylinder mechanism in which a first water passage and a second water passage on the water supply side are switchably connected to both sides of the piston in the cylinder. A lubricating oil cooling device provided with an oil cooler provided in the oil passage for cooling the lubricating oil from the oil pan with the cooling water from the second water passage. 2. A piston is housed in a cylinder, which is connected to a drain plug of an oil pan of an engine via an oil passage, and a spring for pressing the piston is housed in the oil passage connecting side of the piston in the cylinder. A third cylinder mechanism in which a first water passage on the water supply side and a second water passage on the water supply side are switchably connected to the other side of the piston in the cylinder, and an oil passage is provided. Lubricating oil cooling device comprising an oil cooler for cooling the lubricating oil from the oil pan with the cooling water. 3. A first cylinder mechanism connected to a drain plug of an engine oil pan via an oil passage, and a first cylinder mechanism.
A second cylinder mechanism in which a piston for driving the cylinder mechanism is housed in the cylinder, and a compressed air side and an exhaust side are switchably connected to both sides of the piston in the cylinder, and an oil passage is provided for cooling. A lubricating oil cooling device comprising an oil cooler for cooling lubricating oil from an oil pan with water. 4. A first cylinder mechanism connected to an oil supply port of a vehicle transmission through an oil passage,
A second cylinder in which a piston for driving the first cylinder mechanism is housed in the cylinder, and a first water passage and a second water passage on the water supply side are switchably connected to both sides of the piston in the cylinder. A lubricating oil cooling device comprising a mechanism and an oil cooler provided in the oil passage for cooling the lubricating oil from the oil supply port with the cooling water from the second water passage. 5. A piston connected to an oil supply port of a transmission of a vehicle via an oil passage, a piston accommodated in a cylinder, and a spring for pressing the piston accommodated on the oil passage connection side of the piston in the cylinder. A third cylinder mechanism in which a first water passage and a second water passage on the water supply side are switchably connected to the other side of the piston in the cylinder;
A lubricating oil cooling device comprising an oil cooler provided in the oil passage for cooling the lubricating oil from the oil supply port with the cooling water from the second water passage. 6. A first cylinder mechanism connected to an oil supply port of a transmission of a vehicle via an oil passage,
A piston for driving the first cylinder mechanism is housed in the cylinder, and a second cylinder mechanism in which the compressed air side and the exhaust side are switchably connected to both sides of the piston in the cylinder and an oil passage are provided for cooling. A lubricating oil cooling device comprising an oil cooler for cooling the lubricating oil from the oil supply port with water.