KR19980061614A - Automatic Transmission Cooling System with Summerstar - Google Patents

Abstract

The present invention relates to an automatic transmission cooling system in which a thermostat is installed to adjust an internal transmission line of an automatic transmission in the cooling system for cooling the operating oil of the automatic transmission to the same condition as the closed circuit of the engine.

As the water pump, the coolant cooled in the radiator is sent to the engine through the coolant line, and the heat-exchanged coolant from the coolant line is returned to the engine by the water pump through the bypass line at a temperature below a certain temperature by a thermostat. In the engine coolant system that is sent to the radiator through the coolant line to cool the fan to circulate to the coolant line, the coolant line from the radiator flows directly into the oil cooler for automatic transmission, so that the engine by the water pump through the coolant line It is made by directly connecting the thermostat connected to the coolant line on the oil cooler at the same time.

Description

Automatic transmission cooling system with thermostat

The present invention relates to a cooling system for a vehicle using an automatic transmission. The present invention relates to a thermostat for adjusting an internal transmission line of an automatic transmission to the same condition as a closed circuit of an engine in a cooling system for cooling the hydraulic fluid of the automatic transmission. The present invention relates to an automatic transmission cooling system installed.

In general, the cooling water circulation circuit for cooling the generated heat of the engine is a water pump through the radiator 15, the cooling water pump 12, the engine main body 1 and the bypass line 13 below a predetermined temperature as shown in FIG. (12), the thermostat (9) to be brought back to the engine and the cooling pipe lines (8), (11), (16), etc. connecting them, and as an auxiliary device surge tank (3), air ventilation pipe (Air Ventilation Pipe) (2) and the safety valve (4) operating valve (5) and the like, it is a system for cooling the cooling water by the cooling fan (14).

The operating state of this general cooling system is that the coolant sucked by the water pump 12 circulates inside the engine 1 to cool the generated heat of the engine 1 and to the thermostat 9 through the coolant pipe 11. To be transported.

In the thermostat 9, if the coolant temperature is lower than the appropriate prescribed temperature, the coolant is recirculated through the water pump 12 through the bypass line 13 to the engine 1, and if the coolant temperature is higher than the proper temperature, the coolant is cooled. The cooling water is transferred to the radiator 15 through the cooling water pipeline 8 to cool the cooling water to be below an appropriate temperature.

In order to improve the efficiency and performance of the basic circuit configuration and cooling line, air ventilation pipe (2) and cooling water replenishment in closed line cooling line, surge tank (3) equipped with pressurization and protection valve in cooling circuit, etc. Start the cooling circuit.

However, a vehicle equipped with an automatic transmission should be equipped with an oil cooler 18 for the transmission as shown in FIG. 1 to cool the hydraulic fluid of the automatic transmission, which must be cooled by using the engine coolant.

Therefore, in general, the transmission oil cooler 18, the coolant pipelines 17, 19, and the like must be installed in the cooling circuit so that the engine's cooling water must always be circulated to the transmission oil cooler 18. Therefore, the circuit is complicated and the coolant temperature is increased. If it is high, the coolant is transferred to the radiator 15 via the thermostat and the coolant pipeline 8, so that the coolant is partially circulated to the transmission oil cooler 18 via the coolant line 19 drawn out before the thermostat 9. Since the radiator 15 does not cool the hot coolant, the cooling efficiency of the engine decreases, resulting in insufficient cooling of the transmission oil. In addition, when the inlet and outlet of the coolant lines 17 and 19 are connected upside down to the transmission oil cooler (by working immaturity), the suction part pressure of the coolant pump 12 is increased, and thus the coolant does not flow toward the transmission oil cooler.

Therefore, the present invention was devised to solve the above problems, and an object of the present invention is to simplify the cooling line for cooling the operating oil of an automatic transmission oil cooler and to improve the cooling efficiency through the closed circuit configuration under the same condition as the engine interior. It is designed for the purpose of achieving augmentation.

In order to achieve the above object, the present invention sends the cooling water cooled in the radiator as an water pump to the engine through the cooling water line, and the heat exchanged cooling water coming out of the cooling water line by the thermostat is below the predetermined temperature through the bypass line (B). In the engine coolant system, which is returned to the engine by a water pump and is sent to the radiator through a coolant line at a temperature higher than a predetermined temperature, the fan is cooled and circulated to the coolant line. The inlet is connected to the engine by a water pump through the coolant line, and at the same time, a thermostat is connected directly to the coolant line.

1 is a circuit diagram showing a conventional cooling system

2 is a circuit diagram showing a cooling system of the present invention;

3 is a detailed view of portion A of FIG.

Explanation of symbols for the main parts of the drawings

90: thermostat

Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings of preferred embodiments.

In the description of the present invention, the same or equivalent parts as in the prior art will be described with the same reference numerals.

The cooling water cooled in the radiator 15 by the water pump 12 is sent to the engine 1 through the cooling water line 16, and the heat-exchanged cooling water exiting the cooling water line 11 is cooled by a thermostat 9 at a predetermined temperature or less. The water pump 12 is returned to the engine 1 through the bypass line B, and when the temperature is higher than a predetermined temperature, the water pump 12 is sent to the radiator 15 through the cooling water line 8 to cool the fan 14 to cool the cooling water line. In the engine coolant system circulated to (16), as shown in FIG. 2, the coolant line (16) cooled from the radiator is introduced into the oil cooler (18) for the automatic transmission so that the water flows through the coolant line (17). The thermostat 90 is connected to the engine 1 by the pump 12 and the thermostat 90 directly connected to the coolant lines 8 and 11 is mounted on the oil cooler 18.

Referring to the operation of the present invention configured as described above are as follows.

As shown in FIG. 2, the coolant heat-exchanged from the engine flows into the thermostat 9 along the coolant line 11 and enters the oil cooler 18 in the flow A as shown in FIG. A by-pass line is clipped with the coolant cooled from (15) to form a return line back to the engine (1), and when it is above a certain temperature, it is sent to the radiator (15) along the coolant pipe (8) by the flow (B) and cooled Cooling by the fan 14 is achieved. Therefore, the thermostat 9 is directly attached to the oil cooler 18 for the automatic transmission so that the oil cooler 18 for the automatic transmission can be configured to have a closed circuit having the same temperature characteristics as the inside of the engine 1. The body and the oil cooler 18 for the automatic transmission are always operated to be cooled under the same conditions.

This has a configuration and operation similar to that of a general engine cooling circuit so that the entire component circuit is identical to the closed circuit of the engine.

The present invention configured and operated as described above is simplified in the cooling line for the operating oil cooling of the oil cooler for an automatic transmission, and importantly, it is possible to increase the cooling efficiency through the circuit configuration under the same conditions as the engine.

Claims (1)

The cooling water cooled in the radiator 15 by the water pump 12 is sent to the engine 1 through the cooling water line 16, and the heat-exchanged cooling water exiting the cooling water line 11 is cooled by a thermostat 9 at a predetermined temperature or less. The water pump 12 is returned to the engine 1 through the bypass line B, and when the temperature is higher than a predetermined temperature, the water pump 12 is sent to the radiator 15 through the cooling water line 8 to cool the fan 14 to cool the cooling water line. In the engine coolant system circulated to (16), the coolant line (16) cooled from the radiator is allowed to flow directly into the oil cooler (18) for the automatic transmission, and by the water pump (12) through the coolant line (17). The thermostat 90 connecting the coolant lines 8 and 11 to the engine cooler 18 is installed directly on the oil cooler 18 so as to be a closed circuit having the same condition as the inside of the engine. Thermostat characterized in that Seolhan automatic transmission cooling system.