JP2002047935A - Heat exchanger and structure for mounting heat exchanger - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a heat exchanger and a structure for mounting a heat exchanger attaining increase in a degree of freedom to select a place for mounting the heat exchanger, suppression of deterioration of an oil cooling property during stationary operation, and reduction of a manufacturing cost thereof. SOLUTION: In a body 15 of a heat exchanger 11, oil of a transmission and engine cooling water are heat-exchanged there between. The body 15 comprises an oil inlet pipe 20, an oil outlet pipe 21, a water inlet pipe 22 and a water outlet pipe 23. The oil inlet pipe 20 and the oil outlet pipe 21 of the body 15 are connectable through oil piping to the transmission, whereby a place for mounting a heat exchanger 11 can be optionally selected, direct receipt of heat from the transmission can be avoided, oil piping can be shortened, and its distribution becomes easy.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for transmitting a transmission oil (for example, an AT working oil) used for a transmission such as an automatic transmission or a continuously variable transmission mounted on a vehicle such as an automobile and an engine cooling water. The present invention relates to a heat exchanger for performing heat exchange and a mounting structure of the heat exchanger.

[0002]

2. Description of the Related Art Conventionally, as a heat exchanger of this type, as shown in FIGS. 6 and 7, a lower tank 7 of a radiator 70 is used.
1, there is an oil cooler 72 (conventional example 1), and as shown in FIG. 8, an oil cooler 81 (conventional example 2) installed directly on the main body of the automatic transmission 80.

The oil cooler 72 of the prior art 1 is a double-pipe heat exchanger installed in the lower tank 71.
The oil cooler 72 includes two connection pipes 73, 73 provided on the main body thereof as an inlet / outlet of transmission oil (hereinafter, simply referred to as oil), and two oil pipes 74, 74 respectively connected to these connection pipes. Are connected to the outlet and the inlet of the oil passage in the automatic transmission 75 through the transmission. Also, in the engine cooling system shown in FIG. 6, after the engine 76 starts, while the temperature of the engine coolant is low and the thermostat 77 is closed, the engine coolant flowing out of the water jacket of the engine 76 is supplied to the radiator 70. Does not flow through the radiator bypass path 79, and is returned to the water jacket by the water pump 78. Also, when the temperature of the engine cooling water increases due to the warm-up of the engine 76 and the thermostat 77 opens,
The engine cooling water flowing out of the water jacket flows into the radiator 70 and is cooled by heat exchange with the outside air. By the heat exchange with the cooled engine cooling water, the oil sent from the automatic transmission 75 into the oil cooler 72 is cooled. Cooled. The cooled oil is returned to the automatic transmission 75 through the connection pipe 73 and the oil pipe 74 by the oil pump in the automatic transmission 75.

[0004] Further, the oil cooler 81 of the conventional example 2 described above.
Is installed directly on the main body of the automatic transmission 80 without oil piping, as shown in FIG. That is, the oil cooler 81 is laminated inside its body, and the inlet of the oil flow path formed by the plurality of elements 82 sandwiching the inner fin between the two plates is connected to the outlet of the oil passage 83 in the automatic transmission 80 and the substrate. The opening of the oil flow passage is connected to the inlet of the oil passage 86 and the substrate 84.
Is installed directly on the main body of the automatic transmission 80 so as to communicate with an opening (not shown). Also, reference numeral 8
Reference numerals 7 and 88 are an inlet pipe and an outlet pipe of the engine cooling water, respectively. In the oil cooler 81, while the oil sent from the automatic transmission 80 passes through the oil flow path in the main body of the oil cooler 81, the oil flows between the oil cooler 81 and the engine coolant passing outside the oil flow path in the main body. In the automatic transmission 80, heat is exchanged and cooled, and the cooled oil is returned to the automatic transmission 80.

[0005]

However, the oil cooler 72 of the prior art 1 has the following problems.

(1) The installation location of the oil cooler 72 is limited to the inside of the lower tank 71 of the radiator 70. (2) Since the oil cooler 72 provided in the lower tank 71 and the automatic transmission 75 are connected by the oil pipes 74, 74, the pipe becomes long. In particular, in an FR vehicle with an engine installed vertically, the distance between the lower tank 71 and the automatic transmission 75 becomes longer, so that the oil pipes 74, 74 become longer and the wiring thereof becomes complicated, thereby reducing the manufacturing cost. It leads to an increase.

The oil cooler 81 of the second conventional example has the following problems. (3) Since the oil cooler 81 is installed directly on the main body of the automatic transmission 80 without an oil pipe, the oil cooler 81 receives heat generated by the automatic transmission 80 during a steady operation, and the oil temperature rises. I will. For this reason, the oil cooling property during the steady operation is poor.

(4) The oil cooler 81 is connected to the automatic transmission 80
It is necessary to change the oil passage inside the automatic transmission 80 in order to install it on the main body of the automatic transmission 80 without an oil pipe, thereby increasing the manufacturing cost.

The present invention has been made in view of such circumstances, and has as its object to increase the degree of freedom in selecting the mounting location of a heat exchanger, and to reduce the oil cooling performance during steady operation. An object of the present invention is to provide a heat exchanger and a heat exchanger mounting structure that suppress the production and reduce the manufacturing cost.

[0010]

The means for solving the above problems and the operation and effects thereof will be described below. In order to solve the above problem, the invention according to claim 1 is a heat exchanger for performing heat exchange between oil of a transmission sent from a transmission and engine cooling water in a main body, wherein the heat exchange is performed. The main body of the gearbox is characterized in that it can be connected to the transmission via an oil pipe so that the oil circulates between the main body and the transmission.

According to the present invention, since the main body of the heat exchanger can be connected to the transmission via the oil pipe, the installation location of the heat exchanger can be arbitrarily selected. For example, the heat exchanger is not limited to the transmission body, and can be installed by selecting an optimal location such as a cylinder block of an engine or a vehicle body. Further, during steady operation, direct heat reception from the transmission can be avoided, and an increase in oil temperature due to the heat reception can be suppressed. Further, since the main body of the heat exchanger can be installed near the transmission via the oil pipe, the oil pipe can be short, and the wiring thereof can be easily performed.
Therefore, the degree of freedom in selecting the mounting location of the heat exchanger can be increased, the deterioration of the oil cooling property during the steady operation can be suppressed, and the manufacturing cost can be reduced.

According to a second aspect of the present invention, in the heat exchanger according to the first aspect, the main body includes an oil inlet pipe through which the oil flows, an oil outlet pipe through which the oil flows, and engine cooling water. And a water outlet pipe through which the engine cooling water flows.

According to the present invention, it is only necessary to connect the oil inlet pipe and the oil outlet pipe of the main body to the outlet and the inlet of the oil passage normally provided in the transmission, respectively, via the oil pipes. And the transmission can be easily connected. Also, the water inlet pipe and water outlet pipe of the main body only need to be connected to the cooling water path of the engine cooling system via the cooling water pipe, and the heat exchanger and the cooling water path of the cooling system should be easily connected. Can be.

In the invention according to claim 3, claim 1 or 2
The heat exchanger according to the above, wherein the main body is integrally provided with a mounting bracket having a plurality of mounting holes for mounting the main body at an installation location.

According to the present invention, the heat exchanger can be easily fixed to the installation location by fastening a plurality of mounting brackets to the installation location, for example, the side surface of the cylinder block with bolts or the like. Further, since the tightening torque is received by each mounting bracket, the strength of the main body is smaller than that of the structure of the heat exchanger, in which the main body is fixed by bolts through bolts, for example, the conventional example 2 shown in FIG. May be.

In order to solve the above problem, the invention according to claim 4 is directed to a heat exchanger mounting structure for exchanging heat in a main body between oil of a transmission sent from a transmission and engine cooling water. The main body of the heat exchanger is connected to the transmission via an oil pipe so that the oil circulates between the main body and the transmission.

According to the present invention, since the main body of the heat exchanger is connected to the transmission via the oil pipe, the installation location of the heat exchanger can be arbitrarily selected. For example, the heat exchanger is not limited to the transmission body, and can be installed by selecting an optimal location such as a cylinder block of an engine or a vehicle body. Further, during steady operation, direct heat reception from the transmission can be avoided, and an increase in oil temperature due to the heat reception can be suppressed. In addition, the entrance and exit of the oil passage normally provided in the transmission can be used as it is, and there is no need to make changes to the transmission. Reduced. Further, since the main body of the heat exchanger can be installed near the transmission via the oil pipe, the oil pipe can be shortened, wiring can be facilitated, and the manufacturing cost can be reduced accordingly. Therefore, the degree of freedom in selecting the mounting location of the heat exchanger can be increased, the deterioration of the oil cooling property during the steady operation can be suppressed, and the manufacturing cost can be reduced.

Further, in the above conventional example 2, in addition to the fact that the heat of the transmission 80 is directly received and the temperature of oil rises, there is no heat radiation from the oil pipe because there is no oil pipe.
Poor oil cooling during steady operation. Therefore, it is necessary to increase the heat radiation amount of the oil cooler 81 by the amount corresponding to the poor oil cooling property. On the other hand, in the present invention, in addition to avoiding direct heat reception from the transmission, cooling by heat radiation from the oil pipe can be expected. Therefore, the heat radiation amount of the heat exchanger can be smaller than that of the conventional example 2, and the size can be reduced accordingly.

Further, in the second conventional example, a structure having strength enough to withstand the vibration of the transmission 80 is required. On the other hand, according to the present invention, it is possible to select an optimal place such as a vehicle body where vibration is less than that of the transmission or the engine and install the heat exchanger. Therefore, it is not necessary to provide the heat exchanger with the same strength as in the conventional example 2.

Further, in the above-mentioned conventional example 2, since the installation location of the heat exchanger is limited to the transmission main body, it is necessary to route the cooling water piping to the installation location, and the cooling water piping has no flexibility. . On the other hand, in the present invention, the heat exchanger can be installed at an optimum location, so that the degree of freedom in arranging the cooling water piping can be increased.

According to a fifth aspect of the present invention, in the heat exchanger mounting structure according to the fourth aspect, the main body is provided in a cooling water passage of the engine cooling system through which the engine cooling water flows when the thermostat is closed. It is characterized by being.

According to the present invention, since the main body of the heat exchanger is provided in the cooling water path in which the engine cooling water recirculates when the thermostat is closed, the heat exchange with the warm engine cooling water during the warm-up operation after the engine is started. A change is made and the oil warm-up is started early. Therefore, the warm-up property of the oil during the warm-up operation after starting the engine can be improved.

In the invention according to claim 6, according to claim 4 or 5,
In the mounting structure of the heat exchanger according to the above, the main body includes an oil inlet pipe into which the oil flows, an oil outlet pipe from which the oil flows out, a water inlet pipe into which engine cooling water flows, and an engine cooling water. And an outflow water outlet pipe.

According to the present invention, it is only necessary to connect the oil inlet pipe and the oil outlet pipe of the main body to the outlet and the inlet of the oil passage normally provided in the transmission, respectively, via the oil pipes. And the transmission can be easily connected. Further, it is only necessary to connect the water inlet pipe and the water outlet pipe of the main body to the cooling water path of the engine cooling system via the cooling water pipe, and the heat exchanger and the cooling water path can be easily connected.

[0025]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of a heat exchanger and a heat exchanger mounting structure according to the present invention will be described below with reference to FIGS.

As shown in FIGS. 1 and 2, the heat exchanger 11 according to the present embodiment includes oil as an AT working oil used for an automatic transmission 12 mounted on a vehicle such as an automobile, and cooling of the engine 13. This is for performing heat exchange with engine cooling water (hereinafter simply referred to as cooling water) flowing in the system 14. That is, the heat exchanger 11 is used to warm up the oil during the warm-up operation after the engine is started,
3 is for cooling the oil during the steady operation.

The heat exchanger 11 has a cylindrical main body 15, as shown in FIGS.
A plurality of (nine in this example) elements 16 having inner fins sandwiched between the plates are stacked. The internal spaces of the elements 16 communicate with each other to form an oil flow path. Oil sent from the automatic transmission 12 into the main body 15 by an oil pump (not shown) in the transmission enters the oil flow path from an oil inlet 18 of the uppermost element 16, After passing through the oil flow path, it flows out from the oil inlet 19 of the element 16 at the top.

Further, the main body 15 of the heat exchanger 11 is configured to be connectable via an oil pipe so that oil circulates between the main body and the automatic transmission 12. Specifically, as shown in FIG. 1, the main body 15 has an oil inlet pipe 20 into which oil flows in, an oil outlet pipe 21 through which oil flows out, and a water inlet pipe 22 as a water inlet into which cooling water flows.
And a water outlet pipe 23 as a water outlet from which the cooling water flows. The end of the oil inlet pipe 20 is connected to the oil inlet 18 of the main body 15, and the end of the oil outlet pipe 21 is connected to the oil outlet 19 of the main body 15 (see FIG. 4).

The end of the water inlet pipe 22 is connected to the cooling water inlet 24 of the main body 15, and the end of the water outlet pipe 23 is connected to the main body 1.
5 is connected to the cooling water outlet 25 (see FIG. 4). The cooling water flowing into the main body 15 from the water inlet pipe 22 undergoes heat exchange with the oil passing through the oil flow path through each element 16, and the heat-exchanged cooling water flows through the water outlet pipe 23. Then, it flows out of the main body 15.

The main body 15 of the heat exchanger 11 is provided with a mounting bracket 30 having three mounting holes 26 to 28 for fixing the main body to an installation location (in this example, the side of the cylinder block of the engine 13). Is provided. Bolts 29 are inserted into the mounting holes 26 to 28, respectively. In the present embodiment, the mounting holes 2 of the mounting bracket 30 are used.
The bolts 29 are respectively passed through 6 to 28, and the bolts 29 are screwed into screw holes 32 provided on the side surfaces of the cylinder block 31 of the engine 13 and tightened. Cylinder block 3
1 (see FIG. 4). Rubber cushioning material 3
By forming a space between the cylinder block 31 and the cylinder block 31, heat insulation and vibration isolation from the cylinder block 31 can be obtained.

Next, an embodiment of the mounting structure of the heat exchanger 11 having the above configuration will be described. As shown in FIG. 2, the main body 15 of the heat exchanger 11 is connected to the automatic transmission 12 through two oil pipes 35 and 36 so that oil circulates between the main body 15 and the automatic transmission 12. And a cooling water passage (cooling water passage) in the cooling system 14 through which the cooling water flows when the thermostat 40 is closed.

Here, the cooling system 14 will be described. When the thermostat 40 is closed, the cooling water flowing from one outlet 41 of the water jacket of the engine 13 flows through the outlet-side water passage 42, the radiator bypass passage 43, and the return-side water passage 44 to the water pump 45. To return to the water jacket. At the same time, the cooling system 14 includes the thermostat 4
When 0 is closed, the cooling water flowing out from the other outlet 46 of the water jacket is discharged from the outlet side water channel 47, a heater core 48 provided in an air conditioning duct (not shown), a thermostat bypass water channel 49, the main body 15 of the heat exchanger 11, and The water is returned to the water jacket by the water pump 45 through the return water passages 50 and 44. That is, the cooling water passage (cooling water passage) in which the cooling water flows when the thermostat 40 is closed includes the outlet water passage 47, the heater core 48, the thermostat bypass water passage 49, and the return water passages 50 and 44.
It is composed of

The cooling system 14 includes a thermostat 40
When the water pump 45 is opened, the cooling water flowing out of the one outlet 41 passes through the outlet-side water passage 42, the radiator 51, the thermostat 40, and the return-side water passage 44.
To return to the water jacket. The cooling water sent to the radiator 51 is cooled by heat exchange with the outside air while flowing from the upper tank 52 to the lower tank 54 through the heat radiation core 53, and the cooled cooling water is supplied to the water jacket of the engine 13. Is returned to.

As shown in FIG. 3, the oil pipe 35 has an oil hose 55 connected to the oil inlet pipe 20 of the heat exchanger 11, and one end connected to the hose 55 and the other end connected to the automatic transmission 12 as shown in FIG. An oil tube (not shown) connected to the oil outlet of the main body. Similarly, the oil pipe 36 has an oil hose 56 connected to the oil outlet pipe 21 of the heat exchanger 11, and one end connected to the hose 56 and the other end connected to an oil inlet of the automatic transmission 12 main body. It consists of an oil tube (not shown). Thus, the automatic transmission 12 and the heat exchanger 11 are connected by the two oil pipes 35 and 36 so that oil circulates between the two.

The thermostat bypass channel 4
9 includes a water hose 57 connected to the water inlet pipe 22 of the heat exchanger 11 and a water pipe 58 having one end connected to the hose and the other end connected to the heater core 48. Similarly, the return side water channel 50 is connected to the water outlet pipe 2 of the heat exchanger 11.
3 and a water pipe 6 connected to one end of the hose and the other end connected to the return channel 44.
It consists of 0. In this manner, the cooling water flowing out from the other outlet 46 of the water jacket is supplied to the outlet side water channel 47,
Heater core 48 and thermostat bypass water channel 49
The cooling water that has passed through the water inlet pipe 22 and enters the main body 15 of the heat exchanger 11 through the main body 15 of the heat exchanger 11, and that has exchanged heat with oil in the main body, passes through the return water passages 50 and 44 from the water outlet pipe 23 and the water pump 45 To return to the water jacket.

The heat exchanger 1 according to the embodiment described above.
According to 1, the following operation and effect can be obtained. (1) The main body 15 of the heat exchanger 11 is provided with an oil pipe 3 so that oil circulates between the main body and the automatic transmission 12.
Since the connection with the automatic transmission 12 is possible via the transmission lines 5 and 36, the installation location of the heat exchanger 11 can be arbitrarily selected. For example, the heat exchanger 11 is not limited to the main body of the automatic transmission 12, and can be installed by selecting an optimal place such as a side surface of a cylinder block of the engine 13 or a vehicle body.

Further, since the heat exchanger 11 is not directly installed on the main body of the automatic transmission 12, it is possible to avoid direct heat reception from the automatic transmission 12 as in the above-mentioned conventional example 2 shown in FIG. It is possible to suppress an increase in oil temperature due to the heat reception.

Further, the main body 15 of the heat exchanger 11 is moved to the vicinity of the automatic transmission 12 via the oil pipes 35 and 36, for example, to the side of the cylinder block of the engine 13 or the automatic transmission 12 from the same side. 6 and 7, the oil piping is shorter than that of the conventional example 1 shown in FIGS.

Therefore, it is possible to increase the degree of freedom when selecting the mounting location of the heat exchanger 11, to suppress the deterioration of the oil cooling property during the steady operation, and to reduce the manufacturing cost. Can be.

(2) The oil inlet pipe 20 and the oil outlet pipe 21 of the heat exchanger 11 are connected to the outlet and the inlet of an oil passage normally provided in the automatic transmission 12 via oil pipes 35 and 36, respectively. Only by this, the heat exchanger 11 and the automatic transmission 12 can be easily connected.

(3) The water inlet pipe 22 of the heat exchanger 11 is connected to the heater core 48 via a thermostat bypass water passage 49 comprising a water hose 57 and a water pipe 58, and the water outlet pipe 23 is connected to the water hose 59. And water pipe 60
The heat exchanger 11 can be easily connected to the cooling water passage (cooling water passage) of the cooling system 14 simply by connecting to the return water passage 44 via the return water passage 50 composed of.

(4) Since the main body 15 of the heat exchanger 11 is provided with the mounting bracket 30 for fixing the main body to the installation location, the mounting bracket 30 is attached to the installation location (in this example, the cylinder block of the cylinder block). The heat exchanger 11 can be easily fixed to the installation location only by fastening the bolts 29 to the side surface). Further, since the tightening torque of each bolt 29 is received by the mounting bracket 30 at the time of fixing, the strength of the main body 15 may be smaller than that of a structure in which the main body is passed through the main body and the main body is fixed by the bolt.

Further, according to the mounting structure of the heat exchanger 11 according to the above-described embodiment, the following effects can be obtained. (5) The main body 15 of the heat exchanger 11 is provided with oil pipes 35 and 36.
Is connected to the automatic transmission 12 via the
The installation location can be arbitrarily selected,
At the time of steady operation, direct heat reception from the automatic transmission 12 can be avoided, and an increase in oil temperature can be suppressed. In addition, the entrance and exit of the oil passage normally provided in the automatic transmission 12 can be used as it is, and there is no need to make a change to the automatic transmission 12. Also, the manufacturing cost is reduced. Then, the main body 15 of the heat exchanger 11 is replaced with the conventional example 1 described above.
The cooling water piping (49, 50) can be shortened by that much, so that the wiring can be facilitated, and the manufacturing cost can be reduced by that much.
Therefore, the degree of freedom in selecting the mounting location of the heat exchanger can be increased, the deterioration of the oil cooling property during the steady operation can be suppressed, and the manufacturing cost can be reduced.

(6) Since the main body 15 of the heat exchanger 11 is provided in the cooling water path of the cooling system 14 in which the cooling water recirculates when the thermostat 40 is closed, warm engine cooling is performed even during warm-up operation after engine startup. Heat exchange with water takes place and oil warm-up begins early. Therefore, the warm-up property of the oil during the warm-up operation after starting the engine can be improved.

This will be described with reference to FIG. In the same figure, regarding the oil temperature change after the engine is started, the case of the above-mentioned conventional example 1 is indicated by a broken line, and the case of the present embodiment is indicated by a solid line.

In the conventional example 1 (see FIG. 6), during warm-up operation after the engine is started, hot water does not flow through the lower tank 71 of the radiator 70 until the thermostat 77 is opened. Aircraft speed) is too slow. On the other hand, in the present embodiment, even when the thermostat 40 is closed during the warm-up operation after the engine is started,
As described above, the cooling water warmed by the warm-up
Since the oil flows into the main body 15, the warm-up of the oil is started early, and the temperature rise speed is faster than in the first conventional example.

As described above, the oil temperature during the warm-up operation is promoted, so that the lock-up control of the automatic transmission 75 can be performed at an early stage, and the fuel consumption can be reduced.

Further, as shown in FIG. 5, even after the warm-up operation,
Since the oil is exchanged with warm cooling water that is not cooled by the radiator 70, the oil can be heated to a higher temperature than in the above-described conventional examples 1 and 2 (see the low-to-medium load region in the figure). Thereby, the friction of each part of the automatic transmission 75 is reduced, and the operation efficiency of the automatic transmission 75 is improved.

As shown in FIG. 5, the maximum temperature of the oil in the high load region is substantially the same as that of the present embodiment and the above-mentioned conventional examples 1 and 2. (7) In the above conventional example 2, in addition to the fact that the temperature of the oil rises by directly receiving the heat generated by the transmission 80 main body, there is no heat radiation from the oil pipe because there is no oil pipe. Poor cooling. Therefore, it is necessary to increase the heat radiation amount of the oil cooler 81 by the amount corresponding to the poor oil cooling property. In contrast, according to the present embodiment, the heat exchanger 11
Can be installed in the cylinder block of the engine 13, the vehicle body, or the like, so that not only direct heat reception from the automatic transmission 12 can be avoided, but also cooling by heat radiation from the oil pipes 35 and 36 can be expected. Therefore, the heat radiation amount of the heat exchanger 11 can be smaller than that of the conventional example 2, and the heat exchanger 11 can be downsized accordingly.

(8) In the second conventional example, a structure having strength enough to withstand the vibration of the transmission 80 is required. On the other hand, according to the present embodiment, the automatic transmission 12 and the engine 1
Since it is possible to install the heat exchanger 11 by selecting an optimal place such as a vehicle body having less vibration than that of the heat exchanger 3, the heat exchanger 1
1 does not need to have the same strength as in Conventional Example 2.

(9) In the conventional example 2, it is necessary to route the cooling water pipe to the installation location on the transmission, so that the cooling water pipe becomes long and the wiring becomes complicated. On the other hand, according to the present embodiment, the cooling water pipes (the thermostat bypass channel 49 and the return-side channel 5)
0) By selecting an installation location of the heat exchanger 11 that shortens the length and facilitates the wiring, the degree of freedom in wiring the cooling water piping can be increased.

(10) Oil inlet pipe 20 of heat exchanger 11
And the oil outlet pipe 21 is connected to an oil pipe 3 provided at the entrance of an oil passage normally provided in the automatic transmission 12.
The heat exchanger 11 and the automatic transmission 12 can be easily connected simply by connecting the heat exchangers 5 and 36. Further, the water inlet pipe 22 and the water outlet 23 are also connected to the cooling water pipes of the cooling system 14 (the thermostat bypass water passage 49 and the return water passage 5).
0) to connect the heat exchanger 11 to the cooling system 1
4 can be easily connected to the cooling water path (cooling water path).

While the embodiment of the present invention has been described above, this embodiment can be implemented by changing its configuration as described below. In the above embodiment, the automatic transmission 12 includes:
Either an AT for a four-wheel drive vehicle with an engine mounted vertically or an AT for an FF or a four-wheel drive vehicle with the engine mounted horizontally may be used.

In the above embodiment, the automatic transmission 1
2, a continuously variable transmission (CVT) may be used. In the above embodiment, instead of the automatic transmission 12,
A manual transmission (MT) may be used. In this case, an oil pump may be provided in the manual transmission to circulate oil between the heat exchanger 11 and the manual transmission.

In the above embodiment, the oil inlet pipe 20 and the oil outlet pipe 21 are provided in the main body 15 of the heat exchanger 11, but instead of providing these two pipes, the main body 15
May be configured so as to be connectable to a transmission via an oil pipe so that oil circulates between the main body and a transmission such as the automatic transmission 12. For example, the main body 15 may be configured to include two connection ports to which ends of the oil pipes 35 and 36 are connected.

Similarly, instead of providing the water inlet pipe 22 and the water outlet pipe 23 in the main body 15, the main body 15 has two connection ports to which the ends of the cooling water pipes forming the cooling water passages of the cooling system 14 are connected. May be provided.

In the above embodiment, three mounting holes 26 to 28 are provided in the main body 15 of the heat exchanger 11, but the number of mounting holes is not limited to three, and may be any number. For example, when the mounting bracket 30 is made of a highly rigid material, the number of mounting holes may be two.

In the above embodiment, as shown in FIG. 2, the heat exchanger 11 is used as an oil warmer for both cooling and warming up the oil, but the heat exchanger 11 shown in FIG.
May be used in the cooling system of the engine so that only the oil is cooled. Also in this case, the effects (1) to (4) of the embodiment can be obtained.

[Brief description of the drawings]

FIG. 1 is a plan view showing a heat exchanger according to one embodiment.

FIG. 2 is a schematic configuration diagram showing a cooling system using the heat exchanger of FIG.

FIG. 3 is a plan view showing a state where pipes are connected to the heat exchanger of FIG. 1;

FIG. 4 is a sectional view showing a mounting structure of the heat exchanger of FIG. 1;

FIG. 5 is a graph showing a change in oil temperature, comparing an embodiment with a conventional example.

FIG. 6 is a schematic configuration diagram showing a cooling system using a conventional heat exchanger.

FIG. 7 is a schematic configuration diagram showing a conventional heat exchanger used in the cooling system of FIG.

FIG. 8 is a cross-sectional view showing a mounting structure of a heat exchanger according to another conventional example.

[Explanation of symbols]

11 heat exchanger, 12 automatic transmission, 14 cooling system, 1
5 ... body, 20 ... oil inlet pipe, 21 ... oil outlet pipe,
22: water inlet pipe, 23: water outlet pipe, 26-28: mounting hole, 30: mounting bracket, 35, 36: oil pipe, 40: thermostat.

Claims (6)

[Claims] 1. A heat exchanger for performing heat exchange between a transmission oil sent from a transmission and engine cooling water in a main body, wherein the main body of the heat exchanger includes the main body and the transmission. A heat exchanger configured to be connectable to the transmission via an oil pipe so that the oil circulates between the heat exchanger and the transmission. 2. An oil inlet pipe through which the oil flows, an oil outlet pipe through which the oil flows out, and
The heat exchanger according to claim 1, further comprising a water inlet pipe into which the engine cooling water flows, and a water outlet pipe from which the engine cooling water flows. 3. The mounting bracket according to claim 1, wherein the main body is integrally provided with a mounting bracket having a plurality of mounting holes for mounting the main body at an installation location.
A heat exchanger according to item 1. 4. A mounting structure of a heat exchanger for performing heat exchange between oil of a transmission sent from a transmission and engine cooling water in a main body, wherein the main body of the heat exchanger is the same main body. A heat exchanger mounting structure, wherein the heat exchanger is connected to the transmission via an oil pipe so that the oil circulates between the transmission and the transmission. 5. The engine according to claim 1, wherein the main body includes:
The heat exchanger mounting structure according to claim 4, wherein the heat exchanger is provided in a cooling water path in which the engine cooling water recirculates when the thermostat is closed. 6. An oil inlet pipe into which the oil flows, an oil outlet pipe from which the oil flows out, a water inlet pipe into which engine cooling water flows, and a water outlet pipe through which engine cooling water flows. 5. The method according to claim 4, further comprising:
Or the heat exchanger according to 5.