JP2825861B2 - Internal combustion engine with water-cooled intercooler - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial application field) The present invention relates to an internal combustion engine with a water-cooled intercooler.

(Prior Art) FIGS. 12 and 13 show typical examples of a cooling system for a water-cooled intercooler that has been conventionally proposed. First, FIG. 12 shows a system diagram of the flow of the cooling water for the intercooler. The cooling water for the intercooler 50 has a cooling system 51 independent of the cooling system of the engine (not shown). Circulation between the sub-radiator 53 and 52 is performed. Cooling water used for heat exchange inside the intercooler 50 is sent to the sub-radiator 53 placed in front of the vehicle, where it is cooled by an engine fan (not shown) and a vehicle wind speed obtained by running the vehicle, and then cooled again. It is led to cooler 50. In the figure, 54 is an air cleaner, 55 is a turbocharger, and 56 is a surge tank.

FIG. 13 shows a fluid pump 57 in an engine cooling device proposed in Japanese Patent Application Laid-Open No. 58-27810. The fluid pump 57 includes a housing 59 including a rotary impeller 58, and the impeller 58 is fixed to a rotary shaft 61 supported by a pulley 60. The impeller 58 is a housing 59
In cooperation with the internal partition member 62 positioned in the first and second
Fluid chambers 63 and 64 are formed. And the first fluid chamber 63 is connected to the water jacket of the engine,
And are connected to an inlet hole and an outlet hole (not shown).
Fluid chamber 64 communicates with an air-fluid heat exchanger,
It is connected to another inlet hole and outlet hole 65 (not shown). An impeller that separates two independent chambers 63 and 64
A seal member 66 is provided between 58 and the internal partition member 62. 67 is a vane in the first fluid chamber 63, and 68 is a radial vane in the second fluid chamber 64.

(Problems to be solved by the invention) 2 of the engine and the water-cooled intercooler in FIG.
Since the two cooling water circuits are not connected and the water temperature is controlled independently, some measures must be taken during cold start to prevent icing from occurring at the throttle, such as a throttle valve, and to promote gasoline vaporization. (For example, an electric heater, utilizing the heat of exhaust gas, etc.) had to heat the intake air.

In the case of FIG. 13, the intercooler cooling water and the engine cooling water are sent by a single-shaft liquid pump 57 of a rotary shaft 61. No. 27810 discloses that the dividing wall 69 of the impeller 58 supporting the seal 66 is aligned with the partition member 62 such that there is substantially no flow of refrigerant between the two chambers 63 and 64, It is described. Therefore, also in the case of FIG. 13, the two cooling water circuits are independent as in the case of FIG. 12, and the intake air has to be heated by some method.

The present invention is intended to solve the above problem, and can heat the intake air only in a low engine speed range, thereby improving the combustion state and requiring only one cooling water reservoir tank. An object of the present invention is to provide a water-cooled intercooler-equipped internal combustion engine having the above effects.

[Configuration of the invention]

(Means for Solving the Problems) The means of the invention of claim 1 taken to solve the above problems is a radiator for cooling the engine,
A bypass pipe, a first water circuit including a first thermostat, a sub-radiator for cooling a water-cooled intercooler,
A second water circuit including a second bypass pipe and a second thermostat is provided, and at an end of a pump shaft driven by the engine,
In a water-cooled internal cooler-equipped internal combustion engine having a water pump to which a rotary impeller having a first vane for a first water circuit and a second vane for a second water circuit having a smaller capacity than the vane is fixed. And a labyrinth-structure gap is provided between a partition plate on the outer periphery thereof and dividing the water pump body into a first vortex chamber for the first water circuit and a second vortex chamber for the second water circuit. That is.

According to a second aspect of the present invention, in the first aspect of the present invention, a communication hole is provided in the partition plate.

According to a third aspect of the present invention, in the second aspect of the present invention, a temperature sensitive member for controlling the opening and closing of the communication hole is provided.

According to a fourth aspect of the present invention, in the first aspect, a conduit connecting the engine outlet of the first water circuit and the first radiator inlet, a water pump outlet of the second water circuit, and an intercooler are provided. That is, a communication pipe is used to communicate with the conduit connecting the inlet and the communication pipe, and a flow control means such as an orifice is provided in the communication pipe.

According to a fifth aspect of the present invention, in the first aspect, a conduit connecting the engine outlet and the first radiator inlet of the first water circuit, a water pump outlet and an intercooler inlet of the second water circuit are provided. And a temperature sensitive member that detects the water temperature and controls the opening and closing of the communication pipe.

According to a sixth aspect of the present invention, in the first aspect of the present invention, a conduit connecting an engine outlet of the first water circuit and a first radiator inlet, a water pump outlet of the second water circuit, and an intercooler are provided. An opening / closing valve is provided for connecting a conduit connecting the inlet with a communication pipe, and for controlling the opening / closing of the communication pipe in response to a signal from a sensor for detecting operating conditions of the internal combustion engine such as water temperature and rotation speed.

According to a seventh aspect of the present invention, in the first aspect of the present invention, at least the partition plate is made of a material having a lower thermal conductivity than aluminum and does not generate rust, and the rotary impeller is also made of a rust-free material. It is made of a material that does not generate.

The invention according to claim 8 is characterized in that, in the invention according to claim 1, only the labyrinth component of the partition plate is made of a material having a lower thermal conductivity than aluminum and does not generate rust. Is made of a material that does not generate rust.

(Operation) According to the means of the invention of claim 1, the difference in capacity between the two pumps due to the vanes on both sides of the rotary impeller during operation of the engine,
That is, a certain amount of water is exchanged between the first water circuit and the second water circuit due to the difference in water head. The amount of leakage is substantially proportional to the number of revolutions in a low engine speed range, and saturates in a middle to high speed range. Here, the fact that the first water circuit cooling the engine has a higher water temperature than the second water circuit, and that the flow rate of the second water circuit is proportional to the rotation speed,
In consideration of the leakage characteristics, the flow rate of the low-temperature second water circuit cooled by the sub-radiator, the leakage amount,
That is, since the amount of water flowing from the high-temperature first water circuit is substantially equal, the water temperature of the second water circuit rises, and in the middle and high rotation speed range, the amount of water cooled by the sub-radiator becomes the leakage amount. On the other hand, since it is large, it can be seen that the water temperature of the second water circuit becomes low again. Therefore, in the present invention, the intercooler can be operated as an intake air heater when the engine is cold or idling or at low speed without supercharging.

According to the second and fourth aspects of the present invention, the amount of water exchange (leakage) between the first water circuit and the second water circuit can be increased by the communication hole and the flow rate control means, respectively. Function as an intake heater can be improved.

According to the third and fifth aspects of the present invention, when the water temperature is equal to or lower than the predetermined value, the communication hole and the communication pipe are opened by the temperature sensitive member, respectively, so that the water between the first water circuit and the second water circuit is opened. The replacement amount (leakage amount) can be increased,
The function of the intake air heater of the intercooler can be improved,
When the water temperature is equal to or higher than the predetermined value, the communication hole and the communication pipe are closed by the temperature sensitive member, thereby reducing the amount of water exchange (leakage amount) between the first water circuit and the second water circuit, The intercooler can be used effectively.

According to the means of the invention of claim 6, the intercooler can function as an intake air heater in the operating region of the internal combustion engine that is not supercharged, and the intercooler can work effectively in the supercharged basin.

In the invention according to claims 7 and 8, only the partition plate or the labyrinth structure of the partition plate is made of a material having a lower thermal conductivity than aluminum, so that the first vortex in the first water circuit on the engine side is formed. It is possible to reduce the flow of heat from the chamber to the second vortex chamber in the second water circuit. In addition, since the partition plate and the rotary impeller are made of a material that does not generate rust, the size of the labyrinth gap does not change due to rust, and does not affect the performance of the system.

(Embodiments) The present invention will be described below with reference to the embodiments in the drawings.
FIG. 11 to FIG. 11 show an embodiment of the present invention. First, FIG. 1 shows a water circuit according to the present invention, which comprises a first water circuit and a second water circuit. The first water circuit cools the engine 1 and is constituted by conduits 2a, 2b, 2c, a first bypass pipe 3, a first radiator 4, a first thermostat 5, and a water pump 6. The second water circuit for cooling the intercooler indicated by 7 includes conduits 8a, 8b, 8c, a second bypass pipe 41,
The second thermostat 42, the sub-radiator 9 and the water pump 6 are configured. The water pump 6 is driven by a pulley 12 and a belt 1 by a crankshaft 10 of the engine 1.
1. It is rotationally driven through a pulley 13. A cooling fan 14 for cooling the radiator 4 is driven by a driving device 15. Reference numeral 16 denotes a reservoir tank attached to the radiator 4, which is provided for separating water and water and replenishing in case of water leakage. 40 is a cap for water injection and circuit pressure adjustment, and 43 is an air vent valve for the water circuit on the intercooler 7 side.

As shown in FIG. 2, the water supply section for the first water circuit includes a first water inlet 17 connected to the conduit 2c, a first water outlet 18 for sending water to the engine 1, a first vortex chamber 19, The first vane 20 is configured. In addition, the water supply section for the second water circuit,
A second water outlet 21, which is connected to the conduit 8c, a second water inlet 22, to which water is sent from the conduit 8b, a second vortex chamber 23, and a second vane 24. Vane 24 is one
A plurality of rotary impellers 25 are provided on both sides of the rotary impeller 25, and the capacity (water supply capacity) of the first vane 20 is set larger than that of the second vane 24. Reference numeral 26 denotes a rotating shaft, which is driven by the crankshaft 10 via a pulley sheet 27, and rotates the impeller 25 press-fitted and fixed to the end thereof, whereby the first vane 20 and the second vane 24 are rotated. ing. Further, the rotating shaft 26 is integrally assembled with a bearing 28 which is press-fitted and fixed to a body 29. Reference numeral 30 denotes a mechanical seal for preventing water from entering the bearing 28, and reference numeral 31 denotes a drain hole provided in the body 29. The first swirl chamber 19 and the second swirl chamber 23 are separated by a partition plate 32 formed integrally with the body 29, and the partition plate 32 is provided so as to form substantially the same plane as the impeller 25, A labyrinth part 33 is formed between the impeller 25 and the outer peripheral part.

Next, the operation of the embodiment constructed as described above will be described. As shown in FIG. 2, the first vortex chamber 19 and the second vortex chamber 23, that is, the first water circuit and the second water circuit are substantially a labyrinth part 33. Is communicated through. Therefore, during operation of the engine, a certain amount of water is exchanged between the first water circuit and the second water circuit due to a difference in capacity between the two pumps due to the vanes on both sides of the rotary impeller, that is, a difference in head. As shown by the solid line in FIG. 3, the amount of leakage is substantially proportional to the rotational speed in a low engine speed range, and saturates in a medium to high speed range. This is due to the fact that the entire two water circuits are closed systems. In other words, if the two water circuits are open to the atmosphere and have sufficient capacity, (water head / rotation speed ² ) and (leakage / water head)
^{From (1/2} )), the amount of leakage is proportional to the rotational speed, but since there is no room to accept the amount proportional to the rotational speed in a closed circuit as in the embodiment, the leakage is saturated as shown in FIG. The curve shown by the dotted line in FIG. 3 indicates the flow rate of the second water circuit.

Here, comparing the water temperatures of the first water circuit and the second water circuit,
It is clear that the first water circuit cooling the engine 1, which is the main heating element, is higher.

Therefore, considering this and the above-mentioned leakage amount characteristics together, in the low rotation range, the flow rate of the low-temperature second water circuit cooled by the sub-radiator 9 and the leakage amount, that is, the high-temperature first water circuit, Since the amount of flowing water is almost equal, the water temperature of the second water circuit rises, and in the middle and high rotation range, the amount of water cooled by the sub radiator 9 is larger than the amount of leakage.
The phenomenon that the water temperature of the second water circuit decreases again occurs.

Considering that the second water circuit is used for cooling the intercooler 7, the following operation occurs. That is, as is well known, the intercooler serves to cool the intake air whose temperature has increased due to the supercharging effect in the medium to high speed range and to increase the engine output by increasing the density of the intake air. Can be operated as an intake air heater when the engine is cold or idling or at a low speed without supercharging.

Intake heating is a cold start injector that promotes fuel vaporization during cold periods and supplies fuel to the surge tank.
Alternatively, in the case of a single point injector, the mixture distribution to each cylinder is improved, and in the case of a multipoint injector, the mixture can be homogenized. Conventionally, this intake heating has been performed using exhaust heat or an electric heater,
In the above embodiment, the intake air heating can be performed without adding any special device. Of course, in a region where cooling is required as an intercooler in the middle and high speed region, the water in the second water circuit is sufficiently cooled, and there is no problem in its function. The second
The bypass pipe 41 and the thermostat 42 of the water circuit have a function to further enhance the above-mentioned effect.

The embodiment of FIG. 4 is similar to the partition plate 32 of the embodiment of FIG.
In the embodiment shown in FIG. 5, the hole 34 of the partition plate 32 is provided with a temperature-sensitive member such as a bimetal or a shape memory alloy disposed on the first vortex chamber 19 side. In the case where the opening / closing control is performed at 35, the effect of intake air heating is enhanced. That is, in the embodiment of FIG. 4, since the first water circuit and the second water circuit communicate with each other through the hole 34 in addition to the labyrinth portion, the amount of water exchange between the two water circuits (leakage amount). Can be increased, and the function of the intercooler as the above-described intake heater can be enhanced.
In the embodiment of FIG. 5, when the water temperature is equal to or lower than a predetermined value, the hole 34 is opened by the temperature sensitive member 35 to reduce the amount of water exchange (leakage amount) between the first water circuit and the second water circuit. It is possible to increase the function of the intercooler as an intake heater, and to close the hole 34 with the temperature sensitive member 35 when the water temperature is equal to or higher than a predetermined value.
The amount of water exchange (leakage) between the water circuit and the second water circuit can be reduced, and the intercooler can be used effectively. In these embodiments, the setting of the amount of leakage is performed according to the size of the hole 34.

6, 7 and 8 show a first water circuit other than the pump section and a part of the second water circuit, for example, a pipe 2a.
8c is connected by a communication pipe 36. In the case of FIG. 6, when the orifice 37 is provided in the communication pipe 36, FIG.
8 is controlled by a temperature-sensitive member 38 which operates by detecting the temperature, FIG. 8 shows a sensor (not shown) that detects operating conditions such as water temperature and rotation speed instead of the temperature-sensitive member 38 shown in FIG. The solenoid valve (which may be a hydraulic valve or a pneumatic valve as long as the valve is the same on-off valve) 39 is provided in response to a signal from the controller (not shown). It was made. According to the embodiment of FIG. 6, since the first water circuit and the second water circuit communicate with each other through the orifice 37 provided in the communication pipe 36 in addition to the labyrinth portion, the water between the two water circuits is provided. The replacement amount (leakage amount) can be increased, and the function of the intercooler as the above-described intake heater can be enhanced. In addition, according to the embodiment of FIG. 7, when the water temperature is equal to or lower than the predetermined value, the communication pipe 36 is opened by the temperature sensitive member 38 to thereby change the amount of water exchange between the first water circuit and the second water circuit (leakage amount). ) Can be increased, the function of the intercooler as an intake heater can be enhanced, and when the water temperature is equal to or higher than a predetermined value, the communication pipe 36 is closed by the temperature sensitive member 38, thereby forming the first water circuit and the second water circuit. The amount of water exchange (leakage) between the circuits can be reduced, and the intercooler can be used effectively.

Further, according to the embodiment of FIG. 8, the solenoid valve 39 controls the opening and closing of the communication pipe 36 in response to a signal from a sensor (not shown) for detecting operating conditions of the internal combustion engine such as the water temperature and the number of revolutions. In the non-supercharged operation region, the solenoid valve 39 opens the communication pipe 36 to increase the amount of water exchange (leakage) between the first water circuit and the second water circuit, and to heat the intake air of the intercooler. In the supercharged operation region, the communication pipe 36 is closed by the solenoid valve 39 to reduce the amount of leakage and to effectively operate the intercooler.

Next, the embodiment shown in FIG. 9 will be described. Reference numeral 32 'denotes a partition plate made of a different material from the body 29, which constitutes a labyrinth part 33 together with the impeller 25 on the outer periphery of the rotary impeller 25. Are formed integrally with each other and form a part of the wall surfaces of the first vortex chamber 19 and the second vortex chamber 23. The material is lower in heat conductivity than aluminum and does not generate rust. (For example, stainless steel, synthetic resin, etc.). The rotating impeller 25 is also made of a material that does not generate rust (for example, glass-containing polypropylene resin or the like). In the drawing, reference numeral 44 denotes a cover made of aluminum or the like.

Next, in the embodiment of FIG. 10, reference numeral 45 denotes a second body which is separate from the body 29 and is made of synthetic resin.
Although 32 'is formed integrally with the second body 45, there is no difference in operation and effect from the embodiment of FIG. The rotary impeller 25 is made of a material which does not generate rust, such as a glass-filled polypropylene resin, as in the case of FIG.

Next, the embodiment of FIG. 11 will be described.
45 is formed separately from the body 29 as in the case of FIG. 10, but the material is made of iron or synthetic resin, and only the labyrinth forming part 32 ″ of the partition plate 32 ′ is made of stainless steel or the like. Is made of a material having a lower thermal conductivity than aluminum and does not generate rust, and the member is integrated by press-fitting etc. Also in this case, the rotary impeller 25 is made of a material which does not generate rust. ing.

〔The invention's effect〕

Since the present invention is configured as described in detail above, in the low rotation speed range, the flow rate and the leakage amount of the low-temperature second water circuit cooled by the sub-radiator, that is, the water flowing in from the first water circuit, Since the amounts are almost equal, the water temperature of the second water circuit rises. Therefore, in the present invention, since the intake air is heated only in the low rotation range of the engine, the combustion state can be improved. In the middle and high rotation range, the amount of water cooled by the sub radiator is larger than the amount of leakage, so that the water temperature of the second water circuit again decreases.

Therefore, according to the present invention, there is no need to heat the intake air by the electric heater or the heat of the exhaust gas as in the related art, and the intake air can be heated without adding any special device. Therefore, according to the present invention, there is no need to provide a special space for components such as an electric heater or control for interrupting intake air heating as in the related art. Further, according to the present invention, the first water circuit of the engine cooling water circuit and the second water circuit of the intercooler cooling water circuit communicate with each other via the labyrinth structure, so that the number of reservoir tanks can be reduced. In other words, when the water circuit of the engine system and the water circuit of the intercooler system are separate systems as in the conventional case, the water circuit of the intercooler has a reservoir tank for air / water separation and water replenishment and a cooling water injection tank. Although a cap for controlling the circuit pressure is required, such a component is not required in the present invention. Generally, the engine cooling water circuit is also provided with a reservoir tank and a cap for the same purpose. Conventionally, two tanks were required for each of the two tanks. In the present invention, the first water circuit and the second water circuit communicate with each other. Therefore, only one reservoir tank and one cap are required.

According to the second and fourth aspects of the present invention, the amount of water exchange (leakage) between the first water circuit and the second water circuit can be increased by the communication hole and the flow rate control means, respectively. Function as an intake heater can be improved.

According to the third and fifth aspects of the present invention, when the water temperature is equal to or lower than a predetermined value, the communication hole and the communication pipe are opened by the temperature sensitive member, respectively, so that the water between the first water circuit and the second water circuit is opened. Can be increased, the function of the intercooler as an intake heater can be improved, and when the water temperature is equal to or higher than a predetermined value, the communication hole and the communication pipe are closed by a temperature sensitive member, respectively. The amount of water exchange (leakage) between the first water circuit and the second water circuit can be reduced, and the intercooler can be used effectively.

Further, according to the invention of claim 6, the intercooler can function as an intake heater in an operating region of the internal combustion engine that is not supercharged, and the intercooler can work effectively in a region of supercharging.

Furthermore, according to the invention of claims 7 and 8, at least only the labyrinth-forming portion of the partition plate or the partition plate is made of a material having a lower thermal conductivity than aluminum, so that the first water circuit on the engine side can be connected to the first water circuit. The flow of heat to the two-water circuit can be reduced, and the temperature of the intercooler cooling water can be reduced at medium to high speeds. Also, in the present invention, since the material of the partition plate and the rotating impeller does not generate rust, the size of the gap of the labyrinth portion does not change due to rust, so that the performance of the system is impaired. Does not occur.

[Brief description of the drawings]

FIG. 1 is a water circuit diagram of an internal combustion engine with a water-cooled intercooler showing an embodiment of the present invention, FIG. 2 is an enlarged side sectional view showing one example of a water pump in FIG. 1, and FIG. 4 and 5 are cross-sectional views of a labyrinth part different from FIG. 1, respectively. FIGS. 6, 7, and 8 are essential parts of a water circuit of an embodiment different from FIG. 9, 10, and 11 are enlarged side sectional views of a water pump in a water-cooled intercooler-equipped internal combustion engine showing an embodiment of the present invention, which is different from FIG. 2. FIG. FIG. 13 is a side cross-sectional view showing one example of a liquid pump in a conventional engine cooling device in a flow diagram of a flow of cooling water for an intercooler in a conventional water-cooled internal combustion engine with an intercooler. Description of main parts in the drawing 1 ... engine, 2a, 2b, 2c ... conduit 3 ... 1st bypass pipe 4 ... 1st radiator 5 ... 1st thermostat 6 ... water pump 7 ... intercooler 8a, 8b, 8c ... conduit, 9 ... sub-radiator 10 ... crankshaft, 16 ... reservoir tank 17 ... first water inlet, 18 ... first water outlet 19 ... first vortex chamber, 20 first vane 21 second water outlet 22 second water inlet 23 second vortex chamber 24 second vane 25 rotary impeller 26 rotary shaft 29 … Body, 32… Partition plate 33… Labyrinth part, 34… Hole 35… Temperature sensitive member, 36… Communication pipe 37… Orifice, 38… Temperature sensitive member 39… Open / close valve, 40… Cap 44 ...... Cover, 45 ... Second body

──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Toshio Tanahashi 1 Toyota Town, Toyota City, Aichi Prefecture Inside Toyota Motor Corporation (56) References Jikken Sho 55-31242 (JP, Y2) (58) Fields surveyed (Int.Cl. ⁶ , DB name) F01P 3/18 F01P 7/16 504 F01P 5/10

Claims (8)

(57) [Claims] A first water circuit including a radiator for cooling an engine, a first bypass pipe, and a first thermostat;
A second water circuit including a sub-radiator for cooling the water-cooled intercooler, a second bypass pipe, and a second thermostat; a first vane for a first water circuit is provided at an end of a pump shaft driven by the engine; And a water-cooled intercooler-equipped internal combustion engine having a water pump to which a rotary impeller having a second vane for a second water circuit having a smaller capacity than the first vane is fixed. Water cooling characterized by providing a labyrinth structure gap between a partition plate dividing a water pump body into a first vortex chamber for a first water circuit and a second vortex chamber for a second water circuit. Internal combustion engine with an intercooler. 2. The water-cooled intercooler according to claim 1, wherein a communication hole is provided in a partition plate dividing the first vortex chamber and the second vortex chamber. With internal combustion engine. 3. The internal combustion engine with a water-cooled intercooler according to claim 2, further comprising a temperature-sensitive member for detecting a water temperature on a first water circuit side and controlling opening and closing of a communication hole provided in the partition plate. Features an internal combustion engine with a water-cooled intercooler. 4. An internal combustion engine with a water-cooled intercooler according to claim 1, wherein a conduit connecting the engine outlet of the first water circuit and the first radiator inlet, a water pump outlet and an intercooler inlet of the second water circuit. A water-cooled intercooler-equipped internal combustion engine, characterized in that a communication pipe is connected to a conduit connecting the two and a flow control means such as an orifice is provided in the communication pipe. 5. The internal combustion engine with a water-cooled intercooler according to claim 1, wherein a conduit connecting the engine outlet of the first water circuit and the first radiator inlet, a water pump outlet and an intercooler inlet of the second water circuit. A water-cooled intercooler-equipped internal combustion engine, characterized in that a communication tube is connected with a communication pipe, and a temperature-sensitive member that detects water temperature and controls opening and closing of the communication pipe is provided. 6. An internal combustion engine with a water-cooled intercooler according to claim 1, wherein a conduit connecting the engine outlet of the first water circuit and the first radiator inlet, a water pump outlet and an intercooler inlet of the second water circuit. A water-cooled interface, which is provided with an on-off valve for opening and closing the communication pipe in response to a signal from a sensor for detecting internal combustion engine operating conditions such as water temperature and rotation speed. Internal combustion engine with cooler. 7. The internal combustion engine with a water-cooled intercooler according to claim 1, wherein at least the partition plate is made of a material having a lower thermal conductivity than aluminum and does not generate rust, and the rotary impeller does not generate rust. An internal combustion engine with a water-cooled intercooler, which is made of a material. 8. The internal combustion engine with a water-cooled intercooler according to claim 1, wherein only the labyrinth component of the partition plate is made of a material having a lower thermal conductivity than aluminum and does not generate rust. An internal combustion engine with a water-cooled intercooler, characterized by being made of a material that does not generate rust.