CN209892730U - Torque converter oil cooling device - Google Patents

Abstract

The utility model discloses a torque converter oil heat sink, including connecting engine drain pipe and the engine return liquid pipe between engine and coolant liquid radiator, connect the torque converter between torque converter and torque converter oil radiator and go out oil pipe and torque converter return oil pipe, a serial communication port, the torque converter goes out the oil pipe and is equipped with first check valve, the torque converter goes out oil pipe and allies oneself with there is oily heat exchange tube, be equipped with the second check valve on the oily heat exchange tube, oily heat exchange tube runs through the cooling oil temperature device, the cooling oil temperature device set up in on the engine return liquid pipe and with the engine return liquid pipe is linked together, follows the flow direction of torque converter oil, the second check valve is located the upper reaches of cooling oil device. The cooling liquid with lower temperature in the engine liquid return pipe is used for cooling the torque converter oil, so that the temperature of the torque converter oil is reduced, and the problem of high temperature of the torque converter oil is solved.

Description

Torque converter oil cooling device

technical field

The utility model relates to the field of complete vehicle parts, in particular to a torque converter oil cooling device.

Background technique

The hydraulic torque converter is installed between the engine and the transmission, and uses hydraulic oil as the working medium to transmit torque, torque change, speed change and clutch. For some loaders, due to the heat dissipation efficiency and heat dissipation area of the torque converter oil radiator, the oil temperature of the torque converter is higher when the loader continues to shovel, which affects the service life and optimal efficiency of the torque converter. exert a negative impact. The following problems exist:

(1) If the area of the torque converter oil radiator is small or the quality of the oil radiator is poor and the heat dissipation efficiency is low, the temperature of the torque converter oil will be higher than the optimal operating temperature range.

(2) The torque converter oil radiator is located at the front and is arranged in parallel with the coolant radiator and the intercooler. Its high temperature will lead to a higher temperature of the air flowing through the coolant radiator and the intercooler, so that the coolant dissipates heat. The cooling capacity of the cooler and the intercooler is reduced, which affects the use of the whole vehicle.

(3) At present, the oil radiator is loaded with a large area, which basically blocks the entire windward area, which will affect the cooling effect of the coolant radiator and the intercooler.

Utility model content

In view of the above deficiencies, the technical problem to be solved by the present invention is to provide a torque converter oil cooling device to prevent the torque converter oil temperature from being too high.

For solving the above-mentioned technical problems, the technical scheme of the present utility model is:

A torque converter oil cooling device, comprising: an engine liquid outlet pipe and an engine liquid return pipe connected between an engine and a coolant radiator, and a torque converter connected between the torque converter and the torque converter oil radiator The oil outlet pipe and the torque converter oil return pipe, the torque converter oil outlet pipe is provided with a first one-way valve, the torque converter oil outlet pipe is connected in parallel with an oil heat exchange pipe, and the oil heat exchange pipe is provided with a second one-way valve One-way valve, the oil heat exchange pipe runs through the oil temperature reduction device, and the oil temperature reduction device is arranged on the engine liquid return pipe and communicated with the engine liquid return pipe, along the flow direction of the torque converter oil , the second one-way valve is located upstream of the oil temperature reduction device.

Preferably, the oil temperature reduction device includes a heat dissipation casing, and the oil heat exchange pipe passes through the heat dissipation casing.

Preferably, the heat dissipation shell is a metal shell, and the oil heat exchange tube is a metal tube.

Preferably, the oil heat exchange tube is further provided with a third one-way valve, and along the flow direction of the torque converter oil, the third one-way valve is located downstream of the oil temperature reduction device.

Preferably, the first check valve, the second check valve and the third check valve are all solenoid valves, and the first check valve, the second check valve and the third check valve are all solenoid valves. The three one-way valves are respectively electrically connected to the controller;

A coolant temperature sensor is provided at the connection between the engine and the engine liquid outlet pipe, and a torque converter oil temperature sensor is provided at the end of the torque converter oil outlet pipe connected with the torque converter;

The coolant temperature sensor and the torque converter oil temperature sensor are respectively electrically connected to the ECU of the engine, and the ECU of the engine is electrically connected to the controller.

After adopting the above-mentioned technical scheme, the beneficial effects of the present utility model are:

(1) During normal operation, the first one-way valve is opened, the second one-way valve is closed, the engine coolant is cooled by the coolant radiator, and the torque converter oil is cooled by the torque converter oil radiator. When the oil temperature and high pressure are set The first check valve is closed, the second check valve is opened, and the lower temperature coolant in the engine return pipe is used to cool down the torque converter oil, reduce the temperature of the torque converter oil, and solve the problem of the torque converter oil. the problem of high temperature;

(2) The area of the torque converter oil dissipation can be appropriately reduced to make the heat dissipation performance of the engine radiator better;

(3) When used in winter, the high-temperature torque converter oil can be used to heat the coolant, which reduces the warm-up time of the engine and enables the engine to quickly reach the optimal working temperature;

(4) The oil temperature reduction device is made of metal material, which can make the cooling liquid have better heat dissipation. When used in summer, because the temperature difference between the oil and the cooling liquid is smaller than that in winter, it can basically offset the heat absorbed by the cooling liquid. The thermal effect of the system is minimal; if the torque converter oil does not flow into the oil temperature reduction device, the coolant temperature can be reduced, reducing the risk of high engine coolant temperature.

Description of drawings

Fig. 1 is the working principle diagram of the torque converter oil cooling device of the present utility model;

Fig. 2 is the control principle diagram of the torque converter oil cooling device of the present invention;

In the figure: 1-torque converter oil temperature sensor; 2-coolant temperature sensor; 3-first one-way valve; 4-second one-way valve; 5-third one-way valve; 6-engine liquid outlet pipe; 7- Engine liquid return pipe; 8- Torque converter oil outlet pipe; 9- Torque converter oil return pipe; 10- Oil heat exchange pipe; 11- Heat dissipation shell.

Detailed ways

In order to make the purpose, technical solutions and advantages of the present utility model more clearly understood, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, and are not used to limit the present invention.

In FIG. 1 , the solid line arrows indicate the flow direction of the torque converter oil, and the broken line arrows indicate the flow direction of the coolant.

As shown in Figure 1, a torque converter oil cooling device is connected to the engine liquid outlet pipe 6 and the engine liquid return pipe 7 between the engine and the coolant radiator, and is connected between the engine and the torque converter oil radiator The torque converter oil outlet pipe 8 and the torque converter oil return pipe 9, the torque converter oil outlet pipe 8 is provided with a first one-way valve 3, the torque converter oil outlet pipe 8 is connected in parallel with a metal oil heat exchange pipe 10, and the oil exchange The heat exchange part of the heat pipe 10 is covered with a heat dissipation shell 11, the heat dissipation shell 11 is arranged on the engine liquid return pipe 7 and communicated with the engine liquid return pipe 7, and the oil heat exchange pipe 10 is provided with a second one-way The valve 4 and the third one-way valve 5, along the flow direction of the torque converter oil, the second one-way valve 4 is located upstream of the heat exchange part, and the third one-way valve 5 is located downstream of the heat exchange part.

As shown in FIG. 2 , the first one-way valve 3 , the second one-way valve 4 and the third one-way valve 5 are all solenoid valves, and the first one-way valve 3 , the second one-way valve 4 and the third one-way valve 5 are respectively electrically connected with the controller;

A coolant temperature sensor 2 is provided at the connection between the engine and the engine outlet pipe 6, and the coolant temperature sensor 2 is provided by the engine. The end of the torque converter oil outlet pipe 8 connected to the torque converter is provided with a torque converter oil temperature sensor. 1;

The coolant temperature sensor 2 and the torque converter oil temperature sensor 1 are respectively electrically connected to the ECU of the engine, and the ECU of the engine is electrically connected to the controller, and the controller can be optionally a programmable controller PLC, a single-chip microcomputer, or the like.

During normal operation, the first one-way valve 3 is normally open, the second one-way valve 4 and the third one-way valve 5 are normally closed, the torque converter oil temperature sensor 1 detects the oil temperature of the torque converter in real time, and the coolant temperature sensor 2 Real-time detection of the outlet temperature of the engine coolant, and feedback the detected temperature to the engine ECU; when the oil temperature of the torque converter is higher than the set temperature, the ECU sends an instruction to the controller, and the controller sends an instruction to the one-way valve, Close the first one-way valve 3, open the second one-way valve 4 and the third one-way valve 5, the torque converter oil enters the torque converter oil radiator through the oil heat exchange tube 10, and when passing through the oil heat exchange tube 10, due to the The engine coolant temperature is lower than the torque converter oil temperature, the engine coolant cools the torque converter oil, and the torque converter oil temperature is reduced to solve the problem of high torque converter oil temperature, and it can be appropriately reduced on some vehicles The area of the torque converter oil radiator increases the windward area and improves the cooling effect of the coolant radiator and the intercooler.

When used in summer, if the engine coolant temperature is higher than the set value, the second check valve 4 will not be opened even if the torque converter oil temperature is higher than the set value, so that the temperature of the torque converter oil cools the engine The temperature of the fluid will not have an impact, and the large heat dissipation area of the heat dissipation housing 11 is utilized to effectively reduce the temperature of the engine coolant and reduce the risk of high engine coolant temperature.

When used in winter, the higher temperature torque converter oil is used to heat the coolant, which reduces the engine warm-up time and enables the engine to reach the optimum working temperature quickly.

The above are examples of the best embodiments of the present invention, and the parts that are not described in detail are the common knowledge of those of ordinary skill in the art. The protection scope of the present invention is subject to the content of the claims, and any equivalent transformation based on the technical inspiration of the present invention is also within the protection scope of the present invention.

Claims (5)

1. A torque converter oil cooling device, including: an engine liquid outlet pipe and an engine liquid return pipe connected between the engine and the coolant radiator, and a torque converter connected between the torque converter and the torque converter oil radiator The oil outlet pipe and the torque converter oil return pipe are characterized in that the torque converter oil outlet pipe is provided with a first one-way valve, the torque converter oil outlet pipe is connected in parallel with an oil heat exchange pipe, and the oil heat exchange pipe is connected to the oil heat exchange pipe. A second one-way valve is provided, the oil heat exchange pipe runs through the oil temperature reduction device, and the oil temperature reduction device is arranged on the engine liquid return pipe and communicated with the engine liquid return pipe, along the torque converter. The flow direction of the oil, the second one-way valve is located upstream of the oil temperature reduction device. 2 . The torque converter oil cooling device according to claim 1 , wherein the oil temperature cooling device comprises a heat dissipation casing, and the oil heat exchange pipe passes through the heat dissipation casing. 3 . 3 . The torque converter oil cooling device according to claim 2 , wherein the heat dissipation shell is a metal shell, and the oil heat exchange tube is a metal tube. 4 . 4 . The torque converter oil cooling device according to claim 1 , wherein the oil heat exchange tube is further provided with a third one-way valve, and along the flow direction of the torque converter oil, the third one-way valve is 4. 5 . A diverter valve is located downstream of the oil cooling device. 5 . The torque converter oil cooling device according to claim 4 , wherein the first check valve, the second check valve and the third check valve are all solenoid valves, and the The first one-way valve, the second one-way valve and the third one-way valve are respectively electrically connected to the controller; A coolant temperature sensor is provided at the connection between the engine and the engine liquid outlet pipe, and a torque converter oil temperature sensor is provided at the end of the torque converter oil outlet pipe connected with the torque converter; The coolant temperature sensor and the torque converter oil temperature sensor are respectively electrically connected to the ECU of the engine, and the ECU of the engine is electrically connected to the controller.

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