JPH0616991Y2 - Engine warm-up device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to an engine warm-up device capable of shortening the warm-up time of an automobile.

<Prior Art and Its Problems> Conventionally, in automobiles, there are problems such as deterioration of fuel consumption due to deterioration of combustion and increase of friction loss, and heater failure because the cooling water and engine oil are cold immediately after the engine is started.

In view of the above circumstances, the present invention has an object to provide a warm-up device that can shorten the warm-up time of an automobile and solve problems such as combustion deterioration, combustion deterioration, and heater failure.

<Means for Solving the Problems> The structure of the present invention that achieves the above-described object includes a first tank that is insulated from the outside air by a heat insulating layer, and a second tank that can communicate with the first tank. A heat medium made of a liquid having a large heat capacity, which is stored in the first tank during engine stop and normal engine operation, and in the second tank during engine warm-up operation, and the heat medium is warmed up. A transfer means capable of transferring from the first tank to the second tank at the start and transferring from the second tank to the first tank at the end of the warm-up operation, the first tank and the engine side. The first heat pipe capable of transferring heat from the engine side to the heat medium in the first tank when the engine is stopped and during normal engine operation, and the second tank and the engine side are connected to each other. Engine warm It is characterized by comprising a second heat pipe for transmitting the heat of the heat medium in the second tank to the engine side during machine operation.

<Operation> With the above configuration, heat generated during normal engine operation is transferred from the engine side to the heat medium in the first tank via the first heat pipe during normal engine operation and during engine stoppage, and the engine is started. Occasionally, the heat medium stored in the first tank is transferred to the second tank, and the heat is transferred from the heat medium stored in the second tank to the engine side through the second heat pipe. By this, the warm-up time is shortened, and when the warm-up operation is completed, the heat medium in the second tank is transferred to the first tank and heat storage is started again in the heat medium.

<Embodiment> A preferred embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is an explanatory view conceptually showing the engine warm-up device of the present embodiment. As shown in the figure, a first tank 3 and a second tank 4 are provided adjacent to the engine 1. The first tank 3 is surrounded by a heat insulating layer 5 and insulated from the outside air, and is located above the second tank 4. A heat medium 6 made of a liquid having a large heat capacity, such as water, is stored in the first tank 3 and the second tank 4, and the heat medium 6 passes through the pump 9 and the valve 10 to form the first medium.
The tank 3 and the second tank 4 can be transferred to each other. On the other hand, the radiator 2 and the first tank 3
Are connected by a first heat pipe 7 to transfer heat from the cooling water in the radiator 2 toward the heat medium 6 in the first tank 3, and the radiator 2 and the second It is connected to the tank 4 by a second heat pipe 8 so that heat is transferred from the heat medium 6 in the second tank 4 to the cooling water in the radiator 2. Here, the first heat pipe 7 and the second heat pipe 8 are of the gravity type, and transfer heat only from the lower side to the upper side. That is, since the first heat pipe 7 is mounted upward from the radiator 2 toward the first tank 3, the fuel is transferred only from the radiator 2 to the first tank 3, and the second heat pipe 7 is also transmitted. Since 8 is mounted upward from the second tank 4 toward the radiator 2, heat is transferred only from the second tank 4 to the radiator 2.

In such a configuration, during normal operation of the engine 1, the heat medium 6 is stored in the first tank 3, and the heat generated by the engine 1 is higher than that of the cooling water of the radiator 2 by the first amount.
The heat medium 6 in the first tank 3 via the heat pipe 7 of
Is transmitted to and stored. The stored heat medium 6 is stored and kept warm in the first tank 3, which is insulated from the outside air by the heat insulating layer 5 even when the engine is stopped. Then, when the engine is started next time, the heat medium 6 having the accumulated heat is transferred to the second tank 4 by opening the valve 10, and the heat accumulated in the heat medium 6 is transferred to the second heat pipe 8.
Is transmitted to the cooling water in the radiator 8 via. As a result, the cooling water that is cold when the engine is started is warmed, and the warm-up operation of the engine 1 is shortened. When the temperature of the heat medium 6 in the second tank 4 becomes equal to the temperature of the cooling water in the radiator 2 after the warm-up operation is completed, the heat medium 6 is transferred to the first tank 3 by the pump 9. It is warmed by the heat transmitted from the radiator 2 via the first heat pipe 7. In this normal operation, the heat generated from the engine 1 is stored in the heat medium 6, while the temperature of the cooling water in the radiator 2 can be lowered.

Here, when heat pipes 7 and 8 each having a wick material inside are used, heat transfer is not necessarily related to the inclination of the pipes, so that the mechanism as in this embodiment does not necessarily have to be used. However, in that case, after the heat is stored in the heat medium 6 in the first tank 3, when the engine 1 is stopped and the engine 1 is cooled, the heat is opposite to that from the heat medium 6 in the first tank 3. It is necessary to devise to prevent transmission to the engine side.

Further, as the heat transfer / acceptance portion on the engine side, not only the cooling water in the radiator as in the present embodiment but also, for example,
The radiator body, oil pan, engine oil, etc. can be selected. Furthermore, the relative positions of the first tank and the second tank do not necessarily have to be in a vertical relationship, and they may be arranged in parallel at the same height. In this case, it is sufficient that the heat mediums can be transferred to each other and the heat can be transferred to the engine side as described above, and a pump may be used as the transfer means at this time to transfer them to each other. Furthermore, the pump 9 and the valve 10 can be integrated even when they are installed vertically as in this embodiment.

<Effects of the Invention> As described above in detail with reference to the embodiments, the engine warm-up device of the present invention allows the second engine to be started when the engine is started.
The heat from the heat medium in the tank is transferred to the engine side,
Since warm-up is performed quickly, there is no combustion deterioration and fuel consumption is improved, and the immediate effect of the heater is obtained. In addition, during normal operation, heat on the engine side is transferred to the heat medium in the first tank, so that the engine is cooled.

[Brief description of drawings]

FIG. 1 is an explanatory view conceptually showing an engine warm-up device according to an embodiment of the present invention. In the drawings, 1 is an engine, 2 is a radiator, 2 is a first tank, 4 is a second tank, 5 is a heat insulating layer, 6 is a heat medium, 7 is a first heat pipe, 8 is a second heat pipe. , 9 is a pump, and 10 is a valve.

Claims (1)

[Scope of utility model registration request] 1. A first tank that is insulated from the outside air by a heat insulating layer, and a second tank that can communicate with the first tank,
A heat medium composed of a liquid having a large heat capacity, which is stored in the first tank when the engine is stopped and when the engine is in normal operation, and in the second tank when the engine is in warm-up operation, and a warm-up operation of this heat medium is started. Transferring means for transferring from the first tank to the second tank and transferring from the second tank to the first tank at the end of the warm-up operation and the first tank and the engine side When the engine is stopped and the engine is normally operated, the first heat pipe capable of transferring heat from the engine side to the heat medium in the first tank is connected to the second tank and the engine side. And a second heat pipe that transfers the heat of the heat medium in the second tank to the engine side during engine warm-up operation.