JP2002021560A - Internal combustion engine with thermal accumulator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To restrain excessive discharge of heat to supply a heating medium heated by a heating medium heating means 20 efficiently to a heating core 12 and a thermal accumulator 15. SOLUTION: This engine is provided with the first heating medium circulating route for circulation through at least the heating means 20 and the heating core 12 positioned in a downstream of the heating means 20 without passing through an internal combustion engine 1, the second heating medium circulating route circulating through at least the heating means 20 and the thermal accumulator 15 without passing through the engine 1, and the third heating medium circulating route circulating through at least the accumulator 15 and the internal combustion engine 1. The first, second and third circulation passages have a common part respectively, a heating medium supplying means 14 is arranged in the common part.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to an internal combustion engine having a heat storage device.

[0002]

2. Description of the Related Art In an internal combustion engine for a vehicle, early warm-up at the time of engine start is extremely important for improving fuel efficiency and exhaust emission. To raise it enough,
There is a technique in which cooling water is heated by a heating element and this heat is stored.
For this purpose, a heat storage device is provided in the internal combustion engine and an electric heater is installed upstream of the heat storage device so that the cooling water stored in the heat storage device is always kept at a high temperature. For example, Japanese Patent Application Laid-Open No. 10-309933 discloses this. There is a heating device for vehicles that have been used.

The heating apparatus disclosed in the above publication is based on the viewpoint that it is desirable to store cooling water in a heat storage tank at a temperature as high as possible and to supply the cooling water to a heating core in order to perform efficient heating. It is configured. Therefore, an electric heater is arranged upstream of the heat storage tank, and when the temperature of the cooling water in the heat storage tank becomes 50 ° C or less, the electric heater is energized to keep the temperature of the cooling water stored in the heat storage tank high. Then, efficient heating is made possible.

That is, in this apparatus, in order to store cooling water as high as possible in a heat storage container and to supply the cooling water to a heating core, the cooling water is supplied to a water path on the upstream side of a cooling water flow of the heat storage tank. And an electric heater for heating the cooling water flowing therethrough. With such a configuration, high-temperature cooling water can be supplied to the heating core, so that an increase in energy consumed by the electric heater is suppressed and efficient heating can be performed.

[0005]

However, in the above-described heating device for a vehicle, the discharge side of the internal combustion engine is connected to the inflow side of the heat storage tank, and the cooling water discharged from the internal combustion engine is connected to the heat storage tank side. It has a structure including a water channel for guiding, and a heating element disposed on the upstream side of the cooling water flow of the heat storage tank and heating the cooling water flowing through the water channel.
Therefore, the electric heater heats all of the cooling water passing through the engine, and is not necessarily appropriate from the viewpoint of efficiently heating the cooling water supplied to the heat storage tank.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and an object of the present invention is to suppress the release of excess heat and reduce the heat medium heated by the heat medium heating means for heating. An object of the present invention is to provide an internal combustion engine having a heat storage device that can efficiently supply a core and a heat storage device.

[0007]

The present invention employs the following means in order to solve the above-mentioned problems. That is, (a) a heating medium heating means for heating at least the heating medium and a heating medium for exchanging heat between the heating medium and the air for heating the vehicle interior without passing through the internal combustion engine body cooled or heated by the circulation of the heating medium. A first heat medium circulation path for circulating the core, and (b) a second heat circulation apparatus for circulating at least the heat medium heating means and a heat storage device for storing heat of the heat medium without passing through the internal combustion engine body.
(C) a third heat medium circulation path that circulates at least the heat storage device and the internal combustion engine body;
It is characterized by having.

According to such a configuration, in the first heat medium circulation path that circulates through the heat medium heating means and the heating core, the heating medium heated without passing through the internal combustion engine main body is supplied to the heating core. Done. In the second heat medium circulation path that circulates through the heat medium heating means and the heat storage device, the heated heat medium is supplied to the heat storage device without passing through the internal combustion engine body.
Further, the heat medium stored in the heat storage container can be supplied to the internal combustion engine through the third heat medium circulation path.

Examples of the heat medium include engine cooling water and lubricating oil. In the present invention, the first heat medium circulation path, the second heat medium circulation path, and the third heat medium circulation path each have a common part, and a heat medium supply unit is provided in the common part. it can. in this case,
Any of supply of the heat medium heated by the heat medium heating means to the heating core, heat storage by supplying the heat medium heated by the heat medium heating means to the heat storage container, and distribution of the heat medium of the heat storage container to the internal combustion engine body Also in the case of the above, these can be executed by one heat medium supply means.

[0010] The heat medium heating means can be constituted by a heating device of a type in which fuel is burned in a combustion chamber separate from the internal combustion engine body and cooling water is heated by the combustion heat, that is, a so-called combustion heater. Or an electric heater.

The present invention is not limited to the case where a part of the first heat medium circulation path and a part of the second heat medium circulation path are shared, When all the passages coincide with all the passages of the second heat medium circulation path, that is, the first heat medium circulation path and the second heat medium circulation path share all the passages. The case also holds. In this case, the entire heat storage device can be formed to be lightweight.

[0012] In the present invention, the heat medium heating means, the heating core, the heat medium supply means, and the heat storage container are provided in a path shared by the first heat medium circulation path and the second heat medium circulation path. And the heat medium heating means, the heating core, the heat medium supply means, and the heat storage container can be arranged in series in the flow direction of the heat medium. In this way, the high-temperature heat medium heated by the heat medium heating means is caused to flow into the heating core immediately below, so that when the temperature of the heat medium is low, such as when the internal combustion engine body is cold, Also,
The amount of heat necessary for the heating core to heat the air in the passenger compartment can be secured.

Further, the heat medium heated by the heat medium heating means can be efficiently supplied to the heat storage container without the intervention of the internal combustion engine main body to store the heat. According to the present invention, the first short-circuit passage branched from the downstream side of the heat storage container and connected to the upstream side of the heat medium heating means to form a path for circulating the heat medium heating means, the heating core, the heat medium supply means, and the heat storage vessel. May be provided. This makes it possible to easily form a path for circulating the heat medium heating means, the heating core, the heat medium supply means, and the heat storage container without passing through the internal combustion engine body.

Further, a second short-circuit passage which branches off from the downstream side of the heating medium heating means and is connected to the upstream side of the heating medium supply means and bypasses the heating core can be formed. With this configuration, the heat medium heated by the heat medium heating means can be circulated as necessary without passing through the heating core. Therefore, the heat medium heated by the heat medium heating means can be directly sent to the heat storage container to efficiently store heat.

Further, the heating core and the heat storage container are arranged in parallel with each other in the flow direction of the heat medium, and when not passing through the internal combustion engine main body, at least the heat medium supply means, the heat storage container, the heat medium heating means, and The first heat medium circulation path and the second heat medium circulation path that circulate through a heating core can be formed. In this case, the internal combustion engine body, the heating medium heating means, the heating core, the heating medium supply means, and the like, without separately providing a path bypassing the heating core or a path bypassing the heat storage device and the heat medium supply means. A circulation circuit that passes through all of the heat storage containers, a circulation circuit that passes only through the internal combustion engine body, the heat medium supply unit, and the heat storage container only, and that passes only through the heat medium supply unit, the heat storage container, the heat medium heating unit, and the heating core It is possible to selectively establish a circulation circuit, and a circulation circuit that passes only through the internal combustion engine body, the heating medium heating means, and the heating core.

[0016]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of an internal combustion engine having a heat storage device according to the present invention will be described below with reference to the drawings.

FIG. 1 is a diagram showing a schematic configuration of a cooling system of a water-cooled internal combustion engine for driving a vehicle mounted on a vehicle. The internal combustion engine main body 1 includes a cylinder head 1a and a cylinder block 1b. A head side cooling water passage 2a and a block side cooling water passage 2b for circulating cooling water as a heat medium are formed in the cylinder head 1a and the cylinder block 1b of the internal combustion engine body 1, respectively. And the block side cooling water passage 2b communicate with each other.

A first cooling water channel 4 is connected to the head-side cooling water channel 2a, and the first cooling water channel 4 is connected to a radiator 5
Cooling water inlet. Subsequently, a cooling water outlet of the radiator 5 is connected to a thermostat valve 7 via a second cooling water passage 6.

The thermostat valve 7 has, in addition to the second cooling water passage 6, a third cooling water passage 8 communicating with the block-side cooling water passage 2b via a water pump 10.
And a fourth cooling water passage 9 communicating with the head-side cooling water passage 2a.
And are connected. The third cooling water passage 8 is connected to a suction port of a water pump 10 driven by a rotating torque of a crankshaft (not shown), and a discharge port of the water pump 10 is connected to the block-side cooling water passage 2b.
It is connected to the.

The thermostat valve 7 is a passage switching valve that closes one of the second cooling water passage 6 and the fourth cooling water passage 9 in accordance with the temperature of the flowing cooling water. Specifically, the temperature of the cooling water flowing through the thermostat valve 7 is set to a predetermined valve opening temperature:
When T ₁ is less, by opening the fourth cooling channel 9 at the same time blocking the second cooling water passage 6, a third cooling channel 8 4
The cooling water passage 9 is electrically connected. On the other hand, when the temperature of the cooling water flowing through the thermostat valve 7 is higher than the valve opening temperature: T ₁ , the second cooling water passage 6 is opened and the fourth cooling water passage 9 is shut off at the same time. The cooling water passage 6 is electrically connected.

Next, a heater hose 11 is connected to the first cooling water passage 4 at one end thereof.
The other end of 1 is connected in the middle of the third cooling water passage 8 connecting the thermostat valve 7 and the water pump 10 to form another circulation path.

In the middle of the heater hose 11, a cooling water heating mechanism 20, a heating core 12 for exchanging heat between the cooling water and the vehicle interior heating air, an electric water pump 14, and a heat storage container 15 are sequentially arranged. Have been. The heater hose 11 includes a cooling water heating mechanism 20, the heating core 12,
A bypass passage 13 that bypasses the electric water pump 14 and the heat storage container 15 is provided.

The cooling water heating mechanism 20 may be any mechanism that heats cooling water using heat other than the heat generated in the internal combustion engine body 1 as a heat source, and examples thereof include a combustion type heater and an electric heater.

The electric water pump 14 is a pump driven by an electric motor, and is configured to discharge the cooling water sucked from the suction port at a predetermined pressure from the discharge port.

The outlet of the electric water pump 14 is connected to a cooling water inlet 15 c of the heat storage container 15. The heat storage container 15 is a container for storing the cooling water while storing heat of the cooling water. When new cooling water flows in from the cooling water inlet 15c, the high-temperature storage stored in the heat storage container 15 is performed. The cooling water is configured to be discharged from the cooling water outlet 15d. One-way valves 15a and 15b for preventing backflow of the cooling water are attached to each of the cooling water inlet 15c and the cooling water outlet 15d of the heat storage container 15.

Here, the first cooling water passage 4 and the heating core 1
2, a portion on the first cooling water passage 4 side from a connection portion with the bypass passage 13 is referred to as a first heater hose 11a, and a portion on the heating core 12 side is a second heater hose. 11b.

In the heater hose 11 located between the heating core 12 and the third cooling water passage 8, a portion closer to the heating core 12 than a portion connected to the first short-circuit passage 13 is referred to as a third heater hose 11c. At the same time, a portion on the third cooling water passage 8 side is referred to as a fourth heater hose 11d.

The third heater hose 11c is connected to a cooling water outlet 15d of the heat storage container 15, and the third heater hose 11c is connected to the third heater hose 11c.
A flow path switching valve 16 is provided at a connection portion between the heater hose 11c, the fourth heater hose 11d, and the bypass passage 13. The flow path switching valve 16 is a valve that selectively switches between the conduction of the three passages described above and the interruption of any one of the three passages. The flow path switching valve 16 is driven by an actuator such as a step motor (not shown).

The internal combustion engine body 1 of the first cooling water passage 4
The first water temperature sensor 1 that outputs an electric signal corresponding to the temperature of the cooling water flowing through the first cooling water passage 4
7 is attached.

On the other hand, a second water temperature sensor which outputs an electric signal corresponding to the temperature of the cooling water flowing through the third cooling water passage 8 is provided near the connection portion of the fourth heater hose 11d with the third cooling water passage 8. 18 are attached.

An electronic control unit (ECU) 19 for controlling the cooling system is also provided in the cooling system of the internal combustion engine main body 1 configured as described above. The first and second water temperature sensors 17 and 18 described above are electrically connected to the ECU 19, and the electric water pump 14, the flow path switching valve 16, and the cooling water heating mechanism 20 are electrically connected to the ECU 19. Are the operating state of the internal combustion engine body 1 and the first and second water temperature sensors 17 and 18.
It is possible to control the electric water pump 14, the flow path switching valve 16, and the cooling water heating mechanism 20 using the output signal value or the like as a parameter.

The operation of the internal combustion engine having the heat storage device according to this embodiment will be described below. First, the case where the internal combustion engine body 1 is preheated before starting will be described. It is assumed that high-temperature cooling water is stored in the heat storage container 15 in advance.

Before the cranking of the internal combustion engine main body 1 is started, in other words, before the starter motor (not shown) is operated, the ECU 19 shuts off the bypass passage 13 and sets the third heater hose 11c and the fourth heater hose. 11d
And the electric water pump 14 is operated while the flow path switching valve 16 is controlled so as to conduct the electric current.

In this case, since the water pump 10 does not operate and only the electric water pump 14 operates, as shown in FIG. 2, the electric water pump 14 → the third heater hose 11c → the heat storage container 15 → the third heater hose. 11
c → flow path switching valve 16 → fourth heater hose 11d → water pump 10 → block side cooling water path 2b → head side cooling water path 2a → first cooling water path 4 → first heater hose 11a
A circulation circuit in which cooling water flows in the order of the second heater hose 11b, the heating core 12, the third heater hose 11c, and the electric water pump 14 is established.

In such a circulation circuit, when the cooling water discharged from the electric water pump 14 flows into the heat storage container 15 via the third heater hose 11c, the high-temperature heat stored in the heat storage container 15 is substituted for the cooling water. Cooling water is discharged from the heat storage container 15, and the third heater hose 1
1c and the fourth heater hose 11d, flow into the block-side cooling water passage 2b in the internal combustion engine body 1, and then flow into the head-side cooling water passage 2a. The cooling water heating mechanism 20 is activated by the instruction of the ECU 19 when the temperature of the cooling water detected by the first water temperature sensor 17 is equal to or lower than a predetermined temperature, for example, 50 ° C. or lower, and raises the temperature of the circulating cooling water.

When the high-temperature cooling water discharged from the heat storage vessel 15 flows into the head-side cooling water passage and the block-side cooling water passage 2b of the internal combustion engine body 1, it stays in the block-side cooling water passage 2b and the head-side cooling water passage 2a instead. The low-temperature cooling water thus discharged flows out of these cooling water channels to the first cooling water channel 4.

As a result, in the internal combustion engine main body 1, the heat of the cooling water supplied from the heat storage vessel 15 is
b and to the wall surface of the head-side cooling water passage 2a, so that the internal combustion engine body 1 is preheated.

As described above, according to the above circulation circuit, the high-temperature cooling water from the heat storage vessel 15 preheats the cylinder block 1b and the cylinder head 1a. As a result, the ambient temperature of the intake port (not shown) of the cylinder head 1a rises, so that the vaporization of fuel is promoted and the ambient temperature of the air-fuel mixture rises. It is possible to improve the operation time and shorten the warm-up operation time.

After the preheating of the internal combustion engine body 1 is completed, E
After stopping the electric water pump 14, the CU 19 applies the driving power to the starter motor, the fuel injection valve, and the like to start the cranking of the internal combustion engine main body 1, thereby starting the internal combustion engine main body 1.

As a method of determining the completion of preheating of the internal combustion engine main body 1, for example, the preheating of the internal combustion engine main body 1 is completed when the elapsed time from the start of operation of the electric water pump 14 reaches a predetermined time. And the output signal value of the first water temperature sensor 17 (the internal combustion engine body 1).
It may be determined that the preheating of the internal combustion engine body 1 is completed when the temperature of the cooling water flowing out of the internal combustion engine reaches a predetermined temperature or higher.

After the start of the internal combustion engine body 1 is completed, E
The CU 19 maintains the electric water pump 14 in a stopped state. At this time, if the temperature of the cooling water is equal to or lower than the opening temperature of the thermostat valve 7: T ₁ , the thermostat valve 7 shuts off the second cooling water passage 6 and simultaneously opens the fourth cooling water passage 9, as shown in FIG. Thus, the water pump 10 → the block side cooling water passage 2b → the head side cooling water passage 2
a → the fourth cooling water passage 9 → the thermostat valve 7 → the third cooling water passage 8 → the water pump 10 forms a circulation circuit through which the cooling water flows.

In this case, since the relatively low-temperature cooling water flowing out of the internal combustion engine body 1 flows around the radiator 5, the cooling water is not cooled by the radiator 5 more than necessary. As a result, the internal combustion engine body 1 is not unnecessarily cooled by the cooling water, and the warm-up of the internal combustion engine body 1 is not hindered.

Thereafter, the warm-up of the internal combustion engine body 1 is completed,
And the valve opening temperature of the cooling water temperature thermostat valve 7: becomes higher than T _1, since the thermostat valve 7 blocks the fourth cooling channel 9 and simultaneously opens the second cooling channel 6, as shown in FIG. 4, Water pump 10 →
Block side cooling water channel 2b → head side cooling water channel 2a → first
Cooling channel 4 → Radiator 5 → Second cooling channel 6 → Thermostat valve 7 → Third cooling channel 8 → Water pump 1
A circulation circuit through which the cooling water flows in the order of 0 is established.

In this case, since the relatively high-temperature cooling water flowing out of the internal combustion engine body 1 flows through the radiator 5, the heat of the cooling water is radiated by the radiator 5.
As a result, relatively low-temperature cooling water that has been radiated by the radiator 5 flows into the internal combustion engine main body 1, and the internal combustion engine main body 1 is cooled by the cooling water.

Further, when the switch of the vehicle interior heating device (not shown) is turned on while the internal combustion engine body 1 is in the operating state, the ECU 19 shuts off the first short-circuit passage 13 and the third heater hose 11c. And the flow path switching valve 16 is controlled so that the fourth heater hose 11d communicates with the fourth heater hose 11d.
The electric water pump 14 is stopped. However, the electric water pump 14 can be activated when rapid heating is required. In this case, the electric water pump 14 is stopped, but a circulation path similar to that shown in FIG. 2 described above, that is, the water pump 10 → the block side cooling water path 2b → the head side cooling water path 2a → the first cooling water path 4 → 1st heater hose 11a → 2nd heater hose 1
1b → cooling water heating mechanism 20 → second heater hose 11b →
Heating core 12 → third heater hose 11c → electric water pump 14 → heat storage container 15 → third heater hose 11c
A circulation circuit through which cooling water flows in the order of the flow path switching valve 16 → the fourth heater hose 11d → the third cooling water passage 8 → the water pump 10 is established.

In such a circulation circuit, the internal combustion engine body 1
The high-temperature cooling water flowing out of the heating core 12 flows through the heating core 12, so that heat is exchanged between the cooling water and the vehicle interior heating air in the heating core 12, that is, the cooling in the heating core 12. The heat of the water is transmitted to the vehicle interior heating air, and as a result, the vehicle interior heating air is warmed. Cooling water at a predetermined temperature or higher is always supplied to the heat storage container 15 to store heat.

When the heat storage device according to the present embodiment is mounted on a vehicle that temporarily stops the operation of the internal combustion engine when the vehicle is stopped or the like, the internal combustion engine is turned on when the vehicle interior heating device is turned on. When the operation of the main body 1 is stopped, EC
U19 controls the flow path switching valve 16 to make the third heater hose 11c and the first short-circuit passage 13 conductive, and activates the electric water pump 14.

In this case, only the electric water pump 14 operates without operating the water pump 10, and as shown in FIG. 5, the electric water pump 14 → the third heater hose 11c → the heat storage container 15 → the third heater hose 11c. → 1st short circuit passage 13 → 2nd heater hose 11b → cooling water heating mechanism 20 → 2nd heater hose 11b → heating core 12 →
A circulation circuit in which cooling water flows in the order of the third heater hose 11c and the electric water pump 14 is established.

When this circulation circuit is established, the cooling water circulates without passing through the internal combustion engine main body 1, and the heat storage container 15 and the ECU
The high-temperature cooling water flowing out from the cooling water heating mechanism 20 that operates according to the instruction from 19 flows into the heating core 12 while being mixed.

As a result, even if the operation of the internal combustion engine body 1 is stopped and the water pump 10 is stopped, high-temperature cooling water can be circulated to the heating core 12, and the vehicle interior heating device Does not deteriorate.

When storing the high-temperature cooling water in the heat storage container 15 while the internal combustion engine body 1 is stopped, the ECU
19 controls the electric water pump 14 and the flow path switching valve 16 so as to establish the above-described circulation circuit shown in FIG. 6 so that the high-temperature cooling water flowing out of the cooling water heating mechanism 20 flows into the heat storage container 15. What should I do?

As described above, in the heat storage device of this embodiment, the cooling water heating mechanism 2 is provided without the intervention of the internal combustion engine body 1.
0, a cooling water circulation path that circulates through the heating core 12 located downstream thereof can be formed, and extremely efficient heating can be achieved. In this case, the cooling water circulation path becomes shorter,
The amount of heat that can be transmitted from the cooling water to the vehicle interior heating air in the heating core 12 per unit time can be prevented from decreasing due to excess heat radiation. In particular, even when the heat medium has a relatively small amount of heat, such as when the internal combustion engine is cold, it is possible to supply the high-temperature heat medium heated by the heat medium heating mechanism to the heating core. .

On the other hand, a cooling water circulation path for circulating the cooling water heating mechanism 20 and the heat storage container 15 can be formed without passing through the internal combustion engine main body 1, and the heated high-temperature cooling water can be stored without passing through the internal combustion engine main body 1. By flowing into the container 15,
Heat storage can be performed very efficiently.

According to the internal combustion engine having the heat storage device of this embodiment, efficient preheating of the internal combustion engine and improvement of the performance of the vehicle interior heating device and the heat storage device can be achieved without complicating the structure of the cooling water circulation system. The cooling water circulation system can be mounted on a vehicle without deterioration.

<Second Embodiment> Next, a second embodiment of the internal combustion engine having the heat storage device according to the present invention will be described with reference to FIG. Here, only the configuration different from the above-described embodiment will be described, and the description of the same configuration will be omitted.

FIG. 6 is a diagram showing a schematic configuration of a cooling system of an internal combustion engine having a heat storage device according to the present invention. This embodiment is different from the above-described embodiment in that the cooling water heating mechanism 2
Branching from the middle of the second heater hose 11b immediately after 0,
A second short-circuit passage 25 bypassing the heating core 12 and connected to the third heater hose 11c upstream of the water pump 14
Is provided.

In the internal combustion engine having the heat storage device configured as described above, when the switch of the heating device for the cabin is in the ON state (during normal cabin heating), the second heater hose on the cooling water heating mechanism 20 side is used. 11b1 and the second flow path switching valve 2 so that the second heater hose 11b2 on the side of the heating core 12 communicates.
6 while the flow path switching valve 16 is controlled such that the third heater hose 11c and the fourth heater hose 11d communicate with each other. The circulation circuit of the cooling water in this case is as described in the first embodiment.

However, in this embodiment, except when the switch of the heating device for the vehicle interior is in the ON state, the ECU 1
9 is a second heater hose 11b that circulates through the heating core 12.
The second flow path switching valve 26 can be controlled so as to shut off the path from 2 → the heating core 12 → the third heater hose 11c and communicate the second short-circuit path 25.

In this case, the electric water pump 14 →
Third heater hose 11c → heat storage container 15 → third heater hose 11c → first flow path switching valve 16 → first short circuit passage 13 →
Second heater hose 11b1 → cooling water heating mechanism 20 → second
A circulation circuit in which the cooling water flows in the order of the flow path switching valve 26 → the second short-circuit path 25 → the third heater hose 11C → the electric water pump 14 is established.

In the above circulation circuit, the cooling water heating mechanism 2
By supplying the high-temperature cooling water heated by 0 directly to the heat storage container 15, rapid heat storage becomes possible. Therefore, even when the temperature of the cooling water is low, the amount of heat required for preheating the internal combustion engine body 1 can be secured in a short time.

When heating of the vehicle interior is not necessary, that is, when the internal combustion engine body 1 is preheated, during normal heat storage, during normal operation, etc., the path of the cooling water passing through the heating core 12 is closed as described above. . By doing so, the amount of circulating cooling water is reduced, and as a result, the electric water pump 14
Can be reduced. Further, at the time of preheating of the internal combustion engine main body 1 and the like, it is possible to avoid unnecessary heat radiation of the cooling water through the heating core 12.
<Third Embodiment> Next, a third embodiment of the internal combustion engine having the heat storage device according to the present invention will be described with reference to FIG. Here, only the configuration different from the above-described embodiment will be described, and the description of the same configuration will be omitted.

FIG. 7 is a diagram showing a schematic configuration of a cooling system of a water-cooled internal combustion engine for driving a vehicle mounted on a vehicle. A heating core 12 is disposed in the middle of the heater hose 11, and a first bypass passage 13 is provided in the middle of the bypass passage 11 located between the heating core 12 and the third cooling water passage 8.
a is connected.

The first bypass passage 13 a is connected to a suction port of the electric water pump 14. The discharge port of the electric water pump 14 is connected to the second bypass passage 1.
3b, it is connected to the cooling water inlet of the heat storage container 15. The cooling water outlet of the heat storage container 15 is connected to a third bypass passage 13c.
3c is a heating core 12 in the heater hose 11;
And the first cooling water passage 4.

At a connection between the third heater hose 11c, the fourth heater hose 11d, and the first bypass passage 13a, a flow path switching valve 16 is provided. In this configuration,
The electric water pump 14 and the heat storage container 15 are provided on the first bypass passage 13a, and these are arranged in parallel to the flow direction of the heat medium. With this arrangement, the electric water pump 14, the heat storage container 15, the cooling water heating mechanism 20, and the heating core 12 have a parallel positional relationship to each other in the flow direction of the heat medium.

The operation of the internal combustion engine having the heat storage device according to this embodiment will be described below. First, a case where the internal combustion engine body 1 is preheated before starting will be described.

The ECU 19 shuts off the third heater hose 11c before the cranking of the internal combustion engine body 1 is started, and connects the first bypass passage 13a and the fourth heater hose 1c.
In addition to controlling the flow path switching valve 16 so as to establish conduction with 1d, the electric water pump 14 is operated.

In this case, since the water pump 10 does not operate and only the electric water pump 14 operates, as shown in FIG. 8, the electric water pump 14 → the second bypass passage 13b → the heat storage container 15 → the third bypass passage. 13
c → first heater hose 11a → first cooling water passage 4 → head side cooling water passage 2a → block side cooling water passage 2b → water pump 10 → third cooling water passage 8 → fourth heater hose 11d.
A circulation circuit through which cooling water flows in the order of the flow switching valve 16 → the first bypass passage 13a → the electric water pump 14 is established. That is, a circulation circuit is established that passes only through the electric water pump 14, the heat storage container 15, and the internal combustion engine body 1.

In such a circulation circuit, when the cooling water discharged from the electric water pump 14 flows into the heat storage container 15 via the second bypass passage 13b, instead of the cooling water, the high-temperature heat stored in the heat storage container 15 is replaced. The cooling water is discharged from the heat storage container 15 and the third bypass passage 1
3c, the first heater hose 11a, and the first cooling water passage 4 to flow into the head-side cooling water passage 2a in the internal combustion engine body 1, and then from the head-side cooling water passage 2a to the block-side cooling water passage 2b. Become.

When the high-temperature cooling water discharged from the heat storage container 15 flows into the head-side cooling water passage and the block-side cooling water passage 2b of the internal combustion engine body 1, it stays in the head-side cooling water passage 2a and the block-side cooling water passage 2b instead. The low-temperature cooling water thus discharged flows out from the head-side cooling water passage 2a and the block-side cooling water passage 2b to the third cooling water passage 8.

As a result, in the internal combustion engine body 1, the heat of the cooling water supplied from the heat storage vessel 15 is transferred to the head-side cooling water passage 2a.
Then, the heat is transmitted to the wall surface of the block-side cooling water passage 2b, whereby the internal combustion engine main body 1 is preheated.

In the above-mentioned circulation circuit, since the high-temperature cooling water discharged from the heat storage container 15 reaches the internal combustion engine main body 1 without passing through the heating core 12, the circulation from the heat storage container 15 to the internal combustion engine main body 1 is performed. The flow resistance of the cooling water does not increase in the path.

As a result, the amount of cooling water flowing into the internal combustion engine body 1 per unit time does not decrease, and accordingly, the amount of heat that can be transmitted from the cooling water to the internal combustion engine body 1 per unit time is sufficiently increased. It is possible to secure.

According to the above-mentioned circulation circuit, the heat storage container 15
Is supplied from the cylinder head 1a to the cylinder block 1b in this order, so that the cylinder head 1a
Will be preheated preferentially. As a result, the ambient temperature of the intake port (not shown) of the cylinder head 1a rises, so that the vaporization of fuel is promoted and the ambient temperature of the air-fuel mixture rises. , And the warm-up operation time can be shortened.

After the preheating of the internal combustion engine body 1 is completed, E
After stopping the electric water pump 14, the CU 19 applies driving power to a starter motor, a fuel injection valve, and the like to start cranking of the internal combustion engine main body 1, thereby starting the internal combustion engine main body 1.

After the start of the internal combustion engine body 1 is completed, E
The CU 19 controls the flow path switching valve 16 to shut off the third heater hose 11c, and stops the electric water pump 14.

When the internal combustion engine body 1 is in the operating state,
When the switch of the vehicle interior heating device (not shown) is turned on, the ECU 19 shuts off the first bypass passage 13a,
And a third heater hose 11c and a fourth heater hose 11d.
Is controlled, and the electric water pump 14 is stopped.

In this case, as shown in FIG. 9, the water pump 10 → the block side cooling water passage 2b → the head side cooling water passage 2a → the first cooling water passage 4 → the first heater hose 11a →
A circulation circuit in which cooling water flows in the order of the second heater hose 11b → the heating core 12 → the third heater hose 11c → the fourth heater hose 11d → the third cooling water passage 8 → the water pump 10 is established. That is, a circulation circuit is established that passes only through the internal combustion engine body 1, the cooling water heating mechanism 20, and the heating core 12.

Further, in the above circulation circuit, the internal combustion engine body 1
Cooling water flowing out of the heating core 12 flows into the heating core 12 without passing through the heat storage container 15 or the electric water pump 14,
The flow resistance of the cooling water does not become excessively high, and the amount of the cooling water flowing into the heating core 12 per unit time does not excessively decrease. As a result, it is possible to sufficiently secure the amount of heat that can be transmitted from the cooling water to the heating air per unit time in the heating core 12.

When the internal combustion engine body 1 according to the present embodiment is mounted on a vehicle for temporarily stopping the operation of the internal combustion engine when the vehicle is stopped or the like, the switch of the vehicle interior heating device is turned on. When the operation of the internal combustion engine main body 1 is stopped, the ECU 19 controls the flow path switching valve 16 so as to conduct all of the third heater hose 11c, the first bypass passage 13a, and the fourth heater hose 11d. Then, the electric water pump 14 is operated.

In this case, since the water pump 10 does not operate and only the electric water pump 14 operates, as shown in FIG. 10, the electric water pump 14 → the second bypass passage 13b → the heat storage container 15 → the third bypass passage. 1
3c → first heater hose 11a → first cooling water passage 4 → head side cooling water passage 2a → block side cooling water passage 2b → water pump 10 → third cooling water passage 8 → fourth heater hose 11
d → thermostat valve 16 → first bypass passage 13
a → Circulation circuit in which cooling water flows in the order of the electric water pump 14
→ second bypass passage 13b → heat storage container 15 → third bypass passage 13c → second heater hose 11b → heating core 1
2 → third heater hose 11c → thermostat valve 1
6 → first bypass passage 13a → electric water pump 1
A circulation circuit through which the cooling water flows in the order of 4 is established.

When the above-described two circulation circuits are established, the high-temperature cooling water flowing out of the internal combustion engine main body 1 and the high-temperature cooling water flowing out of the heat storage container 15 flow into the heating core 12 while being mixed. Will be.

As a result, even if the operation of the internal combustion engine body 1 is stopped and the water pump 10 is stopped, high-temperature cooling water can be circulated to the heating core 12, and the vehicle interior heating device Does not deteriorate.

In the case where high-temperature cooling water is stored in the heat storage container 15, immediately after the internal combustion engine main body 1 is stopped, the ECU 19 sets the electric water to establish the circulation circuit as described with reference to FIG. Pump 14 and flow path switching valve 1
By controlling 6, the high-temperature cooling water flowing out of the internal combustion engine body 1 may be caused to flow into the heat storage container 15.

Alternatively, the third heater hose 11c and the first bypass passage 13a are communicated without passing through the internal combustion engine main body,
Electric water pump 14 → second bypass passage 13b →
Heat storage container 15 → third bypass passage 13c → second heater hose 11b → heating core 12 → third heater hose 11c
→ thermostat valve 16 → first bypass passage 13a
→ A circulation circuit in which cooling water flows in the order of the electric water pump 14 may be established. In this case, the high-temperature cooling water heated by the cooling water heating mechanism 20 is sent to the heat storage container to store heat.

In the internal combustion engine having the heat storage device according to the above-described embodiment, by providing the electric water pump 14 and the heat storage container 15 in the bypass passage 13, the electric water pump 14 and the heat storage container 15 At the same time, it is positioned in parallel with the heating core 12, so that the circulation circuit passes only through the internal combustion engine body 1, the heat storage vessel 14, and the electric water pump 15, and the circulation circuit passes only through the internal combustion engine body 1 and the heating core 12. It is possible to selectively establish a circulation circuit.

As a result, when the high-temperature cooling water in the heat storage container 15 is supplied to the internal combustion engine main body 1, the cooling water flowing out of the heat storage container 15 reaches the internal combustion engine main body 1 without passing through the heating core 12. High-temperature cooling water flowing out of the internal combustion engine body 1
2, the cooling water flowing out of the internal combustion engine main body 1 can reach the heating core 12 without passing through the electric water pump 14 and the heat storage vessel 15, and the internal combustion engine main body 1 per unit time can be supplied. Or heating core 1
The flow rate of the cooling water flowing into 2 does not decrease,
Accordingly, the amount of heat that can be transmitted from the cooling water to the internal combustion engine body 1 per unit time or the amount of heat that can be transmitted from the cooling water to the vehicle interior heating air in the heating core 12 per unit time does not decrease.

Therefore, according to the internal combustion engine having the heat storage device according to the present embodiment, it is possible to efficiently preheat the internal combustion engine and improve the performance of the heating device for the vehicle interior without complicating the configuration of the cooling water circulation system. Can be achieved. That is, according to the internal combustion engine having the heat storage device according to the present embodiment,
Efficient preheating of the internal combustion engine and improvement of the performance of the vehicle interior heating device can be achieved without deteriorating the mountability of the cooling water circulation system in the vehicle.

The high-temperature cooling water stored in the heat storage container 15 is supplied to the internal combustion engine body 1 before starting (before cranking).
A predetermined cooling water circulation path is formed and supplied to the internal combustion engine main body 1 to preheat it.
Without starting preheating before the start of the operation, the high-temperature cooling water of the heat storage container 15 is supplied to the block-side cooling water passage 2b of the internal combustion engine main body 1 simultaneously with the start of the internal combustion engine main body 1 (that is, simultaneously with the cranking).
Alternatively, the cooling water is supplied to the head-side cooling water passage 2a to
It is also possible to perform an early warm-up.

<Fourth Embodiment> Next, a fourth embodiment of the internal combustion engine having the heat storage device according to the present invention will be described with reference to FIG. Here, only the configuration different from the above-described embodiment will be described, and the description of the same configuration will be omitted.

FIG. 11 is a diagram showing a schematic configuration of a cooling system of a water-cooled internal combustion engine for driving a vehicle mounted on a vehicle. In this embodiment, an electric water pump 14, a heat storage container 15, a cooling water heating mechanism 20 and a heating core 12
Are in parallel with each other in the flow direction of the heat medium, which is the same as in the third embodiment.

However, the difference from the third embodiment is that the positions of the cooling water heating mechanism 20 and the heating core 12 are switched, and the cooling water heating mechanism 20 and the cooling water heating mechanism 20 are arranged in the flow direction of the cooling water. That is the point. In this way, when storing heat, the cooling water heated by the cooling water heating mechanism 20 can be sent to the heat storage container without passing through the heating core 12, and efficient heat storage with reduced heat radiation can be performed.

That is, the ECU 19 controls the electric water pump 14 and the flow path switching valve 16 to make the third heater hose 11c communicate with the first bypass passage 13a, and the electric water pump 14 → the second bypass passage 13b → the heat storage container. 15 → third bypass passage 13c → second heater hose 11b → heating core 12 → third heater hose 11c → cooling water heating mechanism 20 → thermostat valve 16 → first bypass passage 13a → electric water pump 14 A flowing circulation circuit can be established. In this circulation circuit, the high-temperature heat medium heated by the cooling water heating mechanism 20 can be caused to flow into the heat storage container 15, and even when the temperature of the cooling water is low, the high-temperature cooling water can be supplied to the heat storage container in a short time. Can be stored inside.

<Fifth Embodiment> Next, a fourth embodiment of the internal combustion engine having the heat storage device according to the present invention will be described with reference to FIG. Here, only the configuration different from the above-described embodiment will be described, and the description of the same configuration will be omitted.

In this embodiment, the third bypass passage 13c branches off from the middle of the heater hose 11 located between the first cooling water passage 4 and the cooling water heating mechanism 20. The third bypass passage 13c is connected to the electric water pump 1
4 is connected to the suction port. The discharge port of the electric water pump 14 is connected to the cooling water inlet 15c of the heat storage container 15 via the second bypass passage 13b. A first bypass passage 13a is connected to a cooling water outlet 15d of the heat storage container 15, and the first bypass passage 13a is connected to a portion between the heating core 12 and the third cooling water passage 8 in the heater hose 11. Have been.

The difference between this embodiment and the third embodiment is that the heat storage container 15 and the electric water pump 1
This is the point that the arrangement of No. 4 is reversed. As a result, in this embodiment, the flow of the cooling water is always in a fixed direction.

A flow path switching valve 16 is provided at the connection between the third heater hose 11c, the fourth heater hose 11d, and the first bypass passage 13a. Hereinafter, the operation of the internal combustion engine having the heat storage device according to this embodiment will be described.

First, the case where the internal combustion engine body 1 is preheated before starting will be described. The ECU 19 is provided for the internal combustion engine body 1
Before starting the cranking of the third heater hose 1
1c to shut off the first bypass passage 13a and the fourth heater hose 11d.
And the electric water pump 14 is operated.

In this case, since the water pump 10 does not operate and only the electric water pump 14 operates, as shown in FIG. 13, the electric water pump 14 → the second bypass passage 13b → the heat storage container 15 → the first bypass passage. 1
3a → first flow switching valve 16 → fourth heater hose 11d →
Third cooling water channel 8 → water pump 10 → block side cooling water channel 2b → head side cooling water channel 2a → first cooling water channel 4 →
A circulation circuit in which the cooling water flows in the order of the first heater hose 11a → the third bypass passage 13c → the electric water pump 14 is established. That is, a circulation circuit is established that passes only through the electric water pump 14, the heat storage container 15, and the internal combustion engine body 1.

In such a circulation circuit, when the cooling water discharged from the electric water pump 14 flows into the heat storage container 15 via the second bypass passage 13b, the high-temperature heat stored in the heat storage container 15 is replaced with the cooling water. Cooling water is discharged from the heat storage container 15 and the first bypass passage 1
3a, a fourth heater hose 11d, and a third cooling water passage 8,
The water flows into the block-side cooling water passage 2b in the internal combustion engine body 1 via the water pump 10, and then flows into the head-side cooling water passage 2a.

When the high-temperature cooling water discharged from the heat storage container 15 flows into the block-side cooling water passage 2b and the head-side cooling water passage 2a of the internal combustion engine body 1, the block-side cooling water passage 2b and the head The low-temperature cooling water retained in the side cooling water passage 2 a
Will be leaked to

As a result, in the internal combustion engine body 1, the heat of the cooling water supplied from the heat storage vessel 15 is
b and to the wall surface of the head-side cooling water passage 2a, whereby the internal combustion engine main body 1 is preheated.

Further, in the circulation circuit, the high-temperature cooling water discharged from the heat storage container 15 reaches the internal combustion engine main body 1 without passing through the heating core 12.
The flow resistance of the cooling water does not increase in the flow path from the cooling medium to the internal combustion engine body 1.

As a result, the amount of cooling water flowing into the internal combustion engine body 1 per unit time does not decrease, and accordingly, the amount of heat that can be transferred from the cooling water to the internal combustion engine body 1 per unit time is sufficiently increased. It is possible to secure.

After the start of the internal combustion engine body 1 is completed, E
The CU 19 controls the flow path switching valve 16 so as to shut off the first bypass passage 13a, and controls the electric water pump 1
4 is stopped.

When the internal combustion engine main body 1 is in the operating state and the switch of the vehicle interior heating device (not shown) is turned on, the ECU 19 shuts off the first bypass passage 13a and connects with the third heater hose 11c. Fourth heater hose 1
The flow path switching valve 16 is controlled so as to communicate with 1d, and the electric water pump 14 is stopped.

In this case, as shown in FIG. 14, the water pump 10 → the block side cooling water passage 2b → the head side cooling water passage 2a → the first cooling water passage 4 → the first heater hose 11a →
A circulation circuit in which cooling water flows in the order of the second heater hose 11b → the heating core 12 → the third heater hose 11c → the fourth heater hose 11d → the third cooling water passage 8 → the water pump 10 is established. That is, a circulation circuit that circulates through the internal combustion engine main body 1, the cooling water heating mechanism 20, and the heating core 12 without passing through the heat storage container 15 is established.

In such a circulation circuit, the internal combustion engine body 1
High-temperature cooling water flowing out of the heating core 12 flows through the heating core 12, heat exchange is performed between the cooling water and the vehicle interior heating air in the heating core 12, and the vehicle interior heating air is heated. Will be done. At this time, by operating the cooling water heating mechanism 20 as necessary, the cooling water can be maintained at a predetermined temperature.

Further, in the above circulation circuit, the internal combustion engine body 1
Cooling water flowing out from the heating core 12 flows into the heating core 12 without passing through the electric water pump 14 or the heat storage vessel 15,
The flow resistance of the cooling water does not become excessively high, and the amount of the cooling water flowing into the heating core 12 per unit time does not excessively decrease. As a result, a sufficient amount of heat that can be transferred from the cooling water to the heating air per unit time in the heating core 12 can be secured.

Further, the internal combustion engine body 1 of this embodiment
Is mounted on a vehicle that temporarily stops the operation of the internal combustion engine when the vehicle stops or the like, and when the operation of the internal combustion engine main body 1 is stopped with the switch of the vehicle interior heating device turned on and the ECU 19 is stopped. Are connected to the first bypass passage 13a and the third bypass passage 13a.
The flow path switching valve 16 is controlled so as to conduct the heater hose 11c, and the electric water pump 14 is operated.

In this case, since the water pump 10 does not operate and only the electric water pump 14 operates, as shown in FIG. 15, the electric water pump 14 → the second bypass passage 13b → the heat storage container 15 → the first bypass passage. 1
3a → third heater hose 11c → heating core 12 → second
A circulation circuit in which the cooling water flows in the order of the heater hose 11b → the cooling water heating mechanism 20 → the second heater hose 11b → the third bypass passage 13c → the electric water pump 14 is established.

When the above circulation circuit is established, the heat storage container 15
The high-temperature cooling water flowing out of the heating core 12 flows into the heating core 12. Further, the cooling water heated by the cooling water heating mechanism 20 at the upstream thereof and having a high temperature flows into the heat storage container 15, and heat is rapidly stored. As a result, even if the operation of the internal combustion engine body 1 is stopped and the water pump 10 is stopped, high-temperature cooling water can be circulated to the heating core 12, and the performance of the vehicle interior heating device is reduced. It does not drop.

On the other hand, during normal heat storage, the ECU 19 controls the flow path switching valve 16 so as to make the first bypass passage 13a → third heater hose 11c conductive, and operates the electric water pump 14.

In this case, as shown in FIG. 16, the electric water pump 14 → the second bypass passage 13b → the heat storage container 15 → the first bypass passage 13a → the passage switching valve 16 → the fourth passage.
Heater hose 11d → third cooling water channel 8 → water pump 10 → block side cooling water channel 2b → head side cooling water channel 2
a → the first cooling water passage 4 → the first heater hose 11a → the third bypass passage 13c → the electric water pump 14 forms a circulation circuit in which the cooling water flows in this order.

When the above circulation circuit is established, the heat storage container 15
The high-temperature cooling water that has passed through the internal combustion engine body 1 flows into the internal combustion engine to store heat. During normal operation of the internal combustion engine body 1, the ECU 19 controls the flow path switching valve 16 so as to make the first bypass passage 13a → third heater hose 11c conductive, and stops the electric water pump 14. In this case, a cooling water circulation circuit shown in FIG. 14 is established. If the circulation circuit is established, the valve opening temperature of the thermostat valve 7: is higher than T _1, the circulation circuit of the coolant passing through the first cooling water passage 4 → radiator 5 → second cooling channel 6 → thermostat valve 7 Is selected. Therefore, the heat of the cooling water is radiated by the radiator 5, and the internal combustion engine body 1 is cooled.

In the internal combustion engine having the heat storage device according to the above-described embodiment, the electric water pump 14 and the heat storage container 15 are provided between the first bypass passage 13a and the third bypass passage 13d. Since the heat storage container 15 is located in parallel with the heating core 12 in the flow direction of the cooling water, the circulation circuit passing only through the internal combustion engine body 1, the heat storage container 14, and the electric water pump 15, and the internal combustion engine body 1 And a circulation circuit passing only through the cooling water heating mechanism 20 and the heating core 12 can be selectively established.

As a result, when the high-temperature cooling water in the heat storage container 15 is supplied to the internal combustion engine main body 1, the cooling water flowing out of the heat storage container 15 reaches the internal combustion engine main body 1 without passing through the heating core 12. High-temperature cooling water flowing out of the internal combustion engine body 1
When the cooling water is supplied to the heating engine 2, the cooling water flowing out of the internal combustion engine main body 1 can reach the heating core 12 without passing through the electric water pump 14 and the heat storage container 15.

[0117]

According to the present invention, without going through the internal combustion engine,
By the first heat medium circulation path that circulates at least the heat medium heating means and the heating core located downstream of the heat medium heating means, the heat medium that has been efficiently heated can be used for heating without causing extra heat radiation. Can be supplied to the core.

The heat storage of the heat medium that has been efficiently heated without causing extra heat radiation by at least the second heat medium circulation path that circulates through the heat medium heating means and the heat storage device without passing through the internal combustion engine body. Supply to the device takes place.

Further, the heat medium stored in the heat storage container can be supplied to the internal combustion engine main body by the heat storage device and the third heat medium circulation path circulating through the internal combustion engine main body. It can be carried out.

A first bypass passage branched from the downstream side of the heat storage vessel and connected to the upstream side of the heat medium heating means and forming a path for circulating the heat medium heating means, the heating core, the heat medium supply means, and the heat storage vessel is provided. When provided, the heat medium heating means, the heating core, the heat medium supply means, and the heat storage container can be easily circulated without passing through the internal combustion engine main body, and rapid heat storage and heating can be performed even when the internal combustion engine main body is stopped. Becomes possible.

Further, when the heat medium supply means and the heat storage container are arranged in parallel to the flow direction of the heat medium, a circulation circuit passing through the heat medium heating means and the heating core, the heat storage container and the internal combustion engine A circulation circuit passing through the main body is selectively established, thereby enabling rapid heating or rapid preheating before starting the internal combustion engine while reducing the flow resistance of the cooling water in the circulation path.

[Brief description of the drawings]

FIG. 1 is a diagram illustrating a cooling water circuit in a first embodiment of an internal combustion engine including a heat storage device of the present invention.

FIG. 2 is a diagram illustrating a flow of cooling water according to the first embodiment.

FIG. 3 is a diagram showing a flow of cooling water in the internal combustion engine according to the first embodiment.

FIG. 4 is a diagram showing another flow of cooling water in the internal combustion engine according to the first embodiment.

FIG. 5 is a diagram showing another flow of cooling water in the first embodiment.

FIG. 6 is a diagram showing a cooling water circuit in a second embodiment of the internal combustion engine including the heat storage device of the present invention.

FIG. 7 is a diagram showing a cooling water circuit in a third embodiment of the internal combustion engine provided with the heat storage device of the present invention.

FIG. 8 is a diagram illustrating a flow of cooling water according to a third embodiment.

FIG. 9 is a diagram showing another flow of cooling water in the third embodiment.

FIG. 10 is a diagram showing still another flow of cooling water in the third embodiment.

FIG. 11 is a diagram showing a cooling water circuit in a fourth embodiment of the internal combustion engine provided with the heat storage device of the present invention.

FIG. 12 is a diagram showing a cooling water circuit in a fifth embodiment of the internal combustion engine including the heat storage device of the present invention.

FIG. 13 is a diagram showing a flow of cooling water in a fifth embodiment.

FIG. 14 is a diagram showing another flow of cooling water in the fifth embodiment.

FIG. 15 is a diagram showing still another flow of cooling water in the fifth embodiment.

FIG. 16 is a view showing still another flow of cooling water in the fifth embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Internal combustion engine main body 2a ... Head side cooling water channel 2b ... Block side cooling water channel 4 ... Cooling water channel 8 ... Cooling water channel 10 ... Water pump 11 ... Heater hose 11a first heater hose 11b second heater hose 11c third heater hose 11d fourth heater hose 12 heating core 13 first short-circuit passage 13a first bypass passage 13b second bypass passage 13c third bypass passage 14 electric water pump 15 heat storage container 20 cooling water heating mechanism 25 second short circuit passage

Claims (7)

[Claims] (1) Heat exchange between at least a heating medium heating means for heating a heating medium and air for heating a vehicle interior without passing through an internal combustion engine body cooled or heated by circulation of the heating medium. A first heat medium circulation path for circulating a heating core to be performed; and (b) a second heat circulation apparatus for circulating at least the heat medium heating means and a heat storage device for storing heat of the heat medium without passing through the internal combustion engine body. A heat medium circulation path;
An internal combustion engine having a heat storage device, comprising: a heat medium circulation path. 2. The first heat medium circulation path, the second heat medium circulation path, and the third heat medium circulation path each have a common part, and the heat medium supply means is disposed in the common part. An internal combustion engine having the heat storage device according to claim 1. 3. The heat medium heating means, the heating core, the heat medium supply means, and the heat storage container are provided on a path shared by the first heat medium circulation path and the second heat medium circulation path. The heat medium heating means, the heating core, the heat medium supply means, and the heat storage container are arranged in series in the order of the flow of the heat medium in this order. An internal combustion engine having a heat storage container. 4. A path which branches from the heat storage container in the direction of flow of the heat medium and is connected upstream of the heat medium heating means, and circulates through the heat medium heating means, the heating core, the heat medium supply means and the heat storage vessel. An internal combustion engine having a heat storage container according to any one of claims 1 to 3, further comprising a first short-circuit passage formed. 5. A heating device according to claim 1, further comprising a second short-circuit passage branched from a downstream side of the heat medium heating means in a flow direction of the heat medium and connected upstream of the heat medium supply means and bypassing the heating core. Item 6. An internal combustion engine having the heat storage container according to any one of Items 1 to 4. 6. The heating core and the heat storage container are arranged in parallel with each other in the flow direction of the heat medium, and at least a heat medium supply unit, a heat storage container, a heat medium heating unit without interposing an internal combustion engine main body. The internal combustion engine having the heat storage container according to claim 1, wherein the first heat medium circulation path and the second heat medium circulation path that circulate through a heating core can be formed. 7. The heat medium heating means in the first heat medium circulation path and the second heat medium circulation path is disposed downstream of the heating core in the heat medium flow direction and upstream of the heat storage container. An internal combustion engine having the heat storage container according to claim 6.