KR200420698Y1 - oil exchanger for vehicles - Google Patents

Abstract

The present invention relates to an oil changer for an automobile that can be applied to oil of a power steering system as well as to replace oil filled in an automatic transmission system regardless of a vehicle type.

The present invention provides a three-way valve in the line for changing the direction of oil in a conventional oil changer, and the three-way valves are controlled by respective electric actuators, thereby simplifying and reducing the number of components of the oil changer. Can be controlled, and the oil filled in the automatic transmission system can be exchanged appropriately through the work environment according to the automatic transmission of each vehicle type, that is, the input / output adapter or the level gauge hole. In addition, a pressure regulator valve is provided on the branch supply line behind the oil pump through a check valve and connected to the oil pump in front of the check valve, so that a low pressure that does not damage the power steering system is provided. It can be kept constant, which is why it can be applied to oil change of the power steering system.

3-way valve, electric actuator, pressure regulator valve, power steering system,

Description

Oil exchanger for vehicles

1 is a schematic diagram showing a state in which an oil changer is connected to an automatic transmission of a vehicle and used;

2 is a configuration circuit diagram of an oil changer for automobiles according to the present invention;

Figure 3 is a block diagram for automatic control applied to the oil changer for automobiles of the present invention,

Figure 4 is a view showing a three-way valve and its electric actuator applied to the oil changer of the present invention,

5 is a perspective view showing an oil changer for an automobile to which an oil change circuit of the present invention is applied;

Figure 6 is a view showing an extracting the operation panel in the vehicle oil changer of Figure 5,

7 to 11 is an oil flow diagram when performing an oil exchange, oil discharge, oil replenishment, etc. using an automotive oil changer according to the present invention,

12 is a view showing an oil circulation state when the vehicle oil changer according to the present invention is connected in an abnormal reverse direction,

FIG. 13 is a view illustrating an oil circulation state when the line is changed in the forward direction by the line changeover switch in FIG.

14 is a view showing a waste oil sampling state when the vehicle oil exchanger according to the present invention connected in the reverse direction,

15 is a view showing the waste oil discharge and new oil injection state when the vehicle oil exchanger according to the present invention is connected in an abnormal reverse direction,

16 to 18 are diagrams for explaining the oil exchange process through the level gauge hole of the automatic transmission by the oil changer of the present invention,

19 is a view showing to inject the amount of oil set by the user to the automatic oil changer for the vehicle according to the present invention,

20 is a view showing a process for discharging the waste oil in the waste oil container of the oil changer according to the present invention to the outside of the oil changer,

21 is a view showing for explaining the process of replacing the oil of the power steering system using an oil changer according to the present invention,

22 is a flowchart illustrating a state in which the oil changer according to the present invention is switched in the forward direction by a "line change switch" in a state in which the automatic transmission is connected in an abnormal reverse direction.

23 is a flow chart showing an operation state in which the oil exchange is made by the oil changer of the present invention,

24 is a flowchart showing an operating state in which oil is changed by a predetermined set amount by the oil changer of the present invention;

25 is a flowchart showing an operation state in which oil is changed to the level gauge hole by the oil changer of the present invention.

26 is a flow chart showing an operation state in which the oil suction is made by the oil changer of the present invention,

27 is a flowchart showing an operation state in which the oil exchange of the power steering system is performed by the oil changer of the present invention;

28 is a flow chart showing an operation state in which the oil injection is made by the oil changer of the present invention,

29 is a flow chart showing an operation state for discharging the waste oil in the waste oil container (T1) of the oil exchanger of the present invention to the outside,

30 is a flowchart illustrating an operation of discharging oil inside an automatic transmission to an oil changer during circulation (recycle) using the oil changer according to the present invention;

31 is a flowchart illustrating an operation of replenishing (injecting) oil into an automatic transmission from an apparatus during circulation (recycling) by using an oil changer according to the present invention;

32 is a flowchart showing a freshing oil change operation state using the oil changer according to the present invention.

<Description of Symbols for Main Parts of Drawings>

10: oil changer 70A, 70B: sight glass

81: input coupler 82: input adapter

83: output coupler 84: output adapter

100: oil pump 110: control unit

115: A / D converter 120: microcomputer

122: display 200: body

210: operation panel 220: hose cleaning storage box

AT: Automatic Transmission CV1 to CV3: First to Third Check Valves

EC1 to EC8: 1st to 8th electric actuator PCV1: Pressure regulator valve

PG: Pressure gauge TS90: Temperature sensor

S1, S2: Electronic scale T1: Waste oil container

T2: New Oil Container TV1 ~ TV8: First to Eighth Three Way Valves

The present invention relates to an oil changer for exchanging oil in a differential vehicle automatic transmission and a power steering system, and more particularly, it is possible to replace oil filled in an automatic transmission system regardless of a vehicle type, The present invention relates to an automotive oil changer that can be applied to oil change.

In general, the automatic transmission system of a vehicle is a device that receives the power from the engine to change the rotational speed and rotational force of the output shaft, the oil in the oil pan is sucked into the oil pump and supplied to the torque converter from the torque converter through the oil cooler It is a device that transmits power through oil (fluid) through the main shaft and load by the torque converter while continuously circulating the process of returning to the oil pan and automatically shifts according to the load variation. The oil pan of the automatic transmission varies depending on the vehicle type, but there are about 30 to 50% of the oil in the automatic transmission system.

In such an automatic transmission, the oil circulated therein needs to be replaced as it is deteriorated or aged as it is used. The altered or aged oil is exchanged using an oil exchanger. The oil changer related to this technology is connected and installed as shown in FIG. 1, and the oil changer is connected to the input / output adapters 82 and 84 between the torque converter TC and the oil cooler OC, which form the automatic transmission AT. After connecting the input / output coupler of (10) and driving the automatic transmission (AT) through the engine of the vehicle, the oil in the automatic transmission (AT) is discharged to the oil exchanger (10) through the torque converter (TC) , After a certain amount of oil is discharged, the oil in the new oil tank of the oil exchanger 10 is supplied to the oil cooler OC to be replaced. The new oil supplied in this way is the oil exchange is completed when circulated through the oil cooler (OC), oil pan (F), oil pump (P) and torque converter (TC).

Therefore, since waste oil and new oil are diluted and discharged from the oil pan of the automatic transmission (AT), even if the oil is exchanged using a lot of oil, the exchange efficiency is inevitably decreased, which causes a large amount of new oil loss. In a vehicle having no oil level gauge hole or a difficult connection of an input / output coupler to the input / output adapter, there is a problem that it is difficult to change the oil as well as to accurately check the amount of oil change.

In particular, when the input / output coupler is connected to the input / output coupler of the automatic transmission (AT) interchangeably, the operator sees and reads the flow of oil, stops the engine, and then changes the input / output coupler again to connect the flow of oil. The worker had to carry out the work with special attention.

As an oil changer to solve the above problems, it is disclosed in Utility Model Registration No. 0337263, filed and filed by the applicant, which has a check valve at the leading end of the supply and discharge lines. A line is provided so that even if the supply line and the discharge line are connected to the input / output port (adapter) of the automatic transmission, the waste oil in the automatic transmission can be removed and the new oil in the new oil container can be freely supplied regardless of the supply line. It is characterized by the possibility of performing the exchange operation.

In addition, by providing parallel branch line with solenoid valve, glass tube and check valve in the discharge line, it is possible to sample and store the waste oil of the automatic transmission at the beginning of the oil change. It can be compared with the used waste oil, characterized in that the new oil and the sampled waste oil can be visually compared by the light source scanned from the rear of the glass tube.

However, in the utility model as described above, when fresh oil is injected into the automatic transmission after discharging the waste oil in the automatic transmission, the fresh oil is injected into both the supply and discharge lines of the oil changer, and thus the oil discharged by the oil pump of the automatic transmission. There was a problem that the noise is generated in the oil pump of the automatic transmission due to the collision between the pressure and the supply pressure of the new oil supplied from the oil pump of the oil changer side.

In particular, the oil exchanger may be connected to the power steering system as it is, oil exchange may be performed, but since the oil discharge pressure is 6 to 8 kg / cm 2 in the oil pump of the oil changer, Damage to the system can not be applied as it is, due to this has to be equipped with a separate oil changer for oil exchange of the power steering system, there was an end to increase the burden of equipment purchase.

In addition, the external container and the external electronic balance are provided to use the oil of various automatic transmissions according to the vehicle type, but this is an oil injection connection hose for connecting the external container to the oil change device, and the external electronic balance. The cable had to be stored separately, which caused the inconvenience of losing or attaching each time it was used.

The present invention has been researched and developed in order to solve the conventional problems as described above, the purpose of which is to provide three-way valves in the line for changing the direction of the oil, respectively, and control the three-way valves by the respective electric actuator of the oil changer The number of components can be simplified and can be automatically controlled, and the oil filled in the automatic transmission system can be adjusted appropriately through the work environment of each type of automatic transmission, that is, through input / output adapters and level gauge holes. The present invention provides an oil changer for an automobile and an oil exchange method using the same.

Another object of the present invention is to provide a pressure regulator valve in a line connected to an input adapter through a check valve to a branch supply line at the rear of the oil pump and connected to the oil pump in front of the check valve so as not to damage the power steering system. It is possible to maintain a constant at a predetermined low pressure, thereby providing a vehicle oil changer and an oil exchange method using the same that can be applied to the oil exchange of the power steering system.

The present invention for achieving the above object is a new oil container and waste oil container placed on each electronic balance, the oil pump connected to the suction line to suck and discharge oil from the new oil container and waste oil container, discharge from the oil pump At least one check valve is provided in the middle so that the supplied oil can be supplied to the automatic transmission, and a supply line having an input coupler at one end is connected from the automatic transmission to the waste oil container, and at least one check valve is provided in the middle. In the oil changer for a vehicle comprising a discharge line having an output coupler at the end, and a parallel line provided with a sight glass and at least one check valve at each one so as to sample or confirm the waste oil and new oil flowing in the discharge line, In the suction line in front of the oil pump, there are two The first and second three-way valves, which are sucked through the three-way valve and the oil of the waste oil container is installed to be sucked through the one-way valve, are discharged to the waste oil container through the one-way valve on the supply line between the oil pump and the check valve. The third and fourth three-way valves installed to be connected through two three-way valves, and the fourth and seven-way three-way valves are provided in a line between the check valve and the input coupler, the first three-way valve and the seventh three-way valve connected through the line. One branch line having a check valve is provided between the valves, and a fifth three-way valve connected through a circulation line up to the line between the check valve and the seven-way three-way valve while branching from the discharge line between the waste oil container and the check valve. A sixth three-way valve provided at a branch point of the parallel line to selectively switch oil flow to either side of the parallel line, the sixth three-way valve and the output coupler; It is characterized in that it is provided with an eighth three-way valve connected to the circulation line between the fifth and seventh three-way valve while being connected to the sixth, seventh three-way valve in the discharge line therebetween.

The three-way valve is characterized in that each is provided with an electric driver for controlling the direction change of the flow path through the microcomputer and the control unit.

A line is connected from the line between the fourth three-way valve and the third check valve to the first three-way valve, and a pressure regulator valve is provided to constantly adjust the oil pressure supplied to the third check valve. It features.

Hereinafter, the oil changer for automobiles of the embodiment according to the present invention will be described in detail.

2 is a configuration circuit diagram applied to the automotive oil changer of the present invention, which is a new oil container (T2) and waste oil container (T1) placed on each electronic balance (S1, S2), the new oil container (T2) and waste oil container ( Oil pump 100 connected to suction lines H11, H14 to H16 to suck and discharge oil from T1), and a second check in the middle to supply oil discharged from oil pump 100 to an automatic transmission. A supply line having a valve CV2 and having an input coupler 81 at one end thereof, a discharge line connected from an automatic transmission to a waste oil container T1 and having an output coupler 83 at one end thereof; It includes parallel lines (H28, H30, H31) (H29, H32) provided with sight glasses (70A, 70B) and provided with at least one first check valve (CV1), respectively, so as to sample or check the flowing waste oil and fresh oil. It is configured by.

The first and second three-way valves allow the oil of the new oil container T2 to be sucked through two three-way valves and the oil of the waste oil container T1 to be sucked through one three-way valve in the suction line in front of the oil pump 100. (TV1, TV2) is installed, the supply line between the oil pump 100 and the second check valve (CV2) is discharged to the waste oil container (T1) through one three-way valve and connected through two three-way valve Third and fourth three-way valves TV3 and TV4 are installed, and a seventh three-way valve TV7 and a line H23 are connected to the line H24 between the second check valve CV2 and the input coupler 81. One branch line H20 and H25 having a third check valve CV3 is provided between the fourth and seventh three-way valves TV4 and TV7 while the first three-way valve TV1 connected through the first three-way valve TV1 is provided.

A line H21 is connected from the line H20 between the fourth three-way valve TV4 and the third check valve CV3 to the first three-way valve TV1 and the third check valve is connected to the line H21. A pressure regulator valve (PCV1) is provided to adjust the oil pressure supplied to (CV3) constantly.

In addition, branching from the line H13 between the waste oil container T1 and the first check valve CV1 to the lines H24 and H25 between the second check valve CV2 and the seventh three-way valve TV7. The fifth three-way valve (TV5) is installed through the circulation line (H27) until the branch point of the parallel lines (H28, H30, H31) (H29, H32) parallel lines (H28, H30, H31) (H29, The sixth three-way valve TV6 for selectively switching the oil flow is installed on either side of the H32, and the line H33 is connected to the line H38 between the sixth three-way valve TV6 and the output coupler 83. Connected to the sixth and seventh three-way valves TV6 and TV7 through H35 and connected through the line H34 to the circulation line H27 between the fifth and seventh three-way valves TV5 and TV7. 8 A three-way valve (TV8) is installed.

The three-way valves (TV1 ~ TV8) are all provided with an electric actuator (EC1 ~ EC8) for controlling the direction change of the flow path through the microcomputer and the control unit.

3 is a block diagram for automatic control applied to the oil changer for automobiles of the present invention. Here, each of the output values from the electronic scales S1 and S2 of the new oil and the waste oil as well as the temperature of the oil measured by the temperature sensor TS90, which is an input signal part, is transferred to the A / D converter 115, and this A / D The converter 115 converts the output value of the analog signal into a digital signal and transmits the converted signal to the control unit 110 and the microcomputer 120. The control unit 110 and the microcomputer 120 convert the weight value using the converted output value. The flow rate, waste flow rate, temperature, and error messages are displayed on the display 122 by calculating the specific gravity and converting them into volume values, and the data inputted from the temperature sensors TS90, the electronic scales of the waste oil and the new oils S1 and S2. And storing or storing the input value from the key input unit 121 in the storage unit 123, as well as the oil pump 100 and the respective electric actuators EC1 to EC8 according to a command inputted by the operator operating the key input unit 121. Are controlled automatically.

4 is a view showing a three-way valve and an electric actuator thereof applied to the oil changer of the present invention, wherein the valve body 150 having a T type in three directions of the first to third flow paths 150A to 150C is shown. The valve shaft 152 is provided at the intersection of the flow path of the valve body 150 so that the flow direction of the flow path can be reversed. The valve shaft 152 is provided at the upper end of the valve shaft 152. ) Is provided with an electric actuator (EC1 to EC8) having a drive shaft (154) for driving in engagement with the fixed case (156) while wrapping and fixing the valve body (150) and fixing the electric actuator (EC1 to EC8). Consists of.

For reference, based on the first flow path 150A of the valve body 150, when the electric actuators EC1 to EC8 are in an off state, the first and second flow paths 150A and 150B are opened. When the electric drives EC1 to EC8 are on, the first and third flow paths 150A and 150C are opened.

FIG. 5 is a perspective view showing an oil changer for an automobile in an embodiment to which an oil change circuit of the present invention is applied, and FIG. 6 is a view illustrating an operation panel of the oil changer for automobile of FIG. 5.

As shown in the drawings, the automotive oil changer of the present invention is provided with a plurality of casters 202 for easy movement at the lower end of the body 200, and the operation panel (on the front inclined surface of the body 200) 210 is provided, the upper surface is provided with a shelf (212) for placing a simple hand tool, etc. input and output couplers (81,83) for connection with the input and output adapter of the automatic transmission on one side of the body (200) Connection hoses which are lines H37 and H38 having the same are provided, but the connection hose is provided at one side of the body 200 to prevent exposure to the outside of the body 200. The hose or input / output couplers 81 and 83 are housed in the hose arranging storage box 220 so that they can be prevented from being damaged by any influence during movement or outside, and thus can be used for a long time.

The operation panel 210 is disposed on the left side of the sight glass (70A, 70B) that can be easily compared and read the oil turbidity before and after the oil change, the oil on the top of the center can read the abnormality of the automatic transmission The pressure gauge (PG) and the display of the new flow rate, waste flow rate, temperature and the operation of the exchange device 122 is arranged, the lower side of the guide for checking the connection status of the hose, and the operator The key input unit 121 arranged to be easy to use, and the function and error code unit 125 in which various functions and error codes are written are arranged, and on the right side, a power switch 126 and a line switching switch 127 are arranged. have.

Using the oil changer for automobiles according to the present invention configured as described above will be described in detail the oil change process of the automatic transmission.

First, as shown in FIG. 7, the input / output couplers 81 and 83 of the oil changer 10 of the present invention are connected to the input / output adapters 82 and 84 of the automatic transmission AT in a normal forward direction. After turning on the power switch 126 installed on the operation panel 210 of the oil changer 10, the engine of the vehicle is driven. At this time, all of the fifth to eighth three-way valves TV5 to TV8 are in an off state.

When the input / output couplers 81 and 83 of the oil changer 10 are connected to the input / output adapters 83 and 84 of the automatic transmission AT in the forward direction, the output adapter 84 of the automatic transmission AT is connected. Oil discharged from the output coupler (83) → line (H38) → eighth three-way valve (TV8) → line (H36, H33) → sixth three-way valve (TV6) → line (H32) → sight glass (70A) → Line (H29, H28) → Fifth three-way valve (TV5) → Circulation line (H27) → Pressure gauge (PG) → Line (H24) → Seventh three-way valve (TV7) → Line (H37) → Input coupler (81 → The input adapter 82 of the automatic transmission AT is circulated inside the automatic transmission AT of the vehicle.

Since the slide ball moves in the direction in which the oil passes (in the direction of the line H32 to H29), the sight glass 70A can check the flow of the oil in the forward direction, and the backlight 60 behind the sight glass 70A is the sight glass. (70A) is illuminated, so the color of the waste oil can be visually confirmed. At this time, the color of the waste oil can be seen whether it is time to change the oil of the automatic transmission.

When it is determined that the oil should be replaced by looking at the oil color in the state where the oil is circulated in the forward direction as described above, the "oil change" key arranged in the key input unit 121 of the operation panel 210 is pressed, and then the "start" key is pressed. . When the "start" key is pressed, the electric actuator EC6 is driven in an on state to rotate the valve shaft 152 of the fifth and sixth three-way valves TV6, so that the fifth and sixth three-way as shown in FIG. The flow path directions of the valves TV5 and TV6 are switched.

Therefore, the waste oil discharged from the output adapter 84 of the automatic transmission AT is output coupler 83 → line H38 → eighth three-way valve TV8 → lines H36 and H33 → sixth three-way valve TV6. → Parallel line (H31) → Sight glass (70B) → Parallel line (H30) → First check valve (CV1) → Parallel line (H28) → Fifth three-way valve (TV5) → Line (H13) → Waste oil container ( Discharged to T1).

When the waste oil of the automatic transmission is discharged into the waste oil container T1 and the waste oil is introduced into the waste oil container T1 by 0.5 →, the electronic scale S1 under the waste oil container T1 is recognized, and the electronic scale S1 is recognized. When the electric actuator EC6 is driven to the off state, the valve shaft 152 of the sixth three-way valve TV6 is rotated, so that the flow direction of the sixth three-way valve TV6 is switched to the original state (off state) as shown in FIG. 9. Will return.

When the sixth three-way valve TV6 returns to its original state (off state) in this way, the waste oil discharged from the output adapter 84 of the automatic transmission is output coupler 83 → line H38 → eighth three-way valve ( TV8) → Line (H36, H33) → Sixth three-way valve (TV6) → Line (H32) → Sight glass (70A) → Parallel line (H29, H28) → Fifth three-way valve (TV5) → Line (H13) → It is discharged to the waste oil container (T1). In this case, since the slide ball moves in the direction (flow direction) where the oil passes through the sight glass 70A, the oil may recognize the flow in the forward direction. Therefore, the sight glass 70B stores the waste oil sample of the automatic transmission at the beginning of the oil exchange operation, and the back light 60 of the rear side illuminates the sight glass 70B so that the color of the waste oil can be visually checked.

The waste oil in the automatic transmission (AT) is discharged to the waste oil container (T1) as described above, and almost no oil in the oil pan (1) forming the automatic transmission system is discharged to the waste oil container (T1) for a predetermined time. The microcomputer 120 recognizes the electronic balance S1 under the waste oil container T1, and the oil pump 100 of the oil changer 10 is turned on by the signal of the microcomputer 120. . At this time, the first to fourth three-way valves TV1 to TV4 are in an off state.

When the oil pump 100 is turned on, the new oil flow lines H16 and H21 in the new oil container T2 on the electronic balance S2 are connected to the first three-way valve TV1 and the line H15 to the second three-way valve. (TV2) → line (H14) → oil pump (100) → line (H17) → third three-way valve (TV3) → line (H18) → fourth three-way valve (TV4) → line (H19) → second check valve (CV2) → line (H26, H27, H24) → seventh three-way valve (TV7) → line (H37) → the input coupler 81 → the input adapter 82 is injected into the automatic transmission.

In this way, the new oil injected into the automatic transmission by the oil changer of the present invention is injected after discharging a certain amount of waste oil in the automatic transmission (AT), so that the waste oil remaining in the oil pump, torque converter, and oil cooler in the automatic transmission is sequentially By injecting and exchanging, the oil exchange can be easily carried out while maintaining a high exchange efficiency state, thereby minimizing the loss of new oil.

The process of oil change by the oil changer of the present invention will be described in more detail with reference to FIG. 23. First, turn on the oil changer 10 and press the "oil change" key to check the weight of the waste oil container (T1) and the new oil container (T2), respectively. At this time, if the actual value of the waste oil in the waste oil container T1 is equal to or higher than the upper limit programmed in the microcomputer, an error message of "Out of waste oil container" and a buzzer sound are output. After emptying the waste oil container T1, "Oil exchange" is started again. Press key to continue oil change operation. If the actual value of the new oil in the new oil container (T2) is less than the lower limit programmed in the microcomputer, an error message and a buzzer sound are displayed.If the new oil container is replaced or new oil is replaced, the "Oil exchange" key is restarted from the beginning. Press to continue the oil change operation.

When there is no problem in the weight of the new oil container (T2) and the waste oil container (T1), when the "Start" key is pressed, a certain amount of waste oil discharged from the automatic transmission is discharged to the waste oil container (T1) through the sight glass (70B), and then the site The waste oil sample is stored in the sight glass 70B by discharging the waste oil container T1 through the glass 70A. In this way, if the weight of the waste oil container (T1) is continuously increased by the waste oil flowing into the waste oil container (T1) and there is no change for a specified time, all the oil in the fan (1) of the automatic transmission is discharged and the automatic transmission (AT) Even if the oil pump 2 operates, the microcomputer recognizes that no more oil is discharged, and the microcomputer 120 stores and stores the amount of discharge oil at this time as a "primary waste oil discharge amount." At this time, if there is no change in the weight of the waste oil container (T1) for a specified time from the beginning of the discharged waste oil, an error message is displayed and the oil change operation is stopped and initialized.

The oil pump 100 of the oil changer of the present invention is operated to inject 95% of fresh oil in a specified amount sequentially based on the "primary waste oil discharge amount" stored in the microcomputer 120. In this way, if the oil starts to be injected and crosses the new oil and continues to be discharged according to the jungle, if there is no change over the specified discharge within the specified time, an error message is displayed on the display. If the waste oil increases above the specified discharge, an error message is displayed. It will disappear automatically and the oil change will proceed normally.

In addition, if fresh oil is injected as much as the specified reference amount, but the waste oil is not discharged above the specified reference amount, the oil pump 100 stops and the fresh oil injection is temporarily maintained while the discharged oil is discharged above the specified reference amount. The process of continuing the injection is automatically repeated sequentially. This repetition function eliminates the risk of oil spilling into the level gauge hole if the discharge rate of waste oil is slower than that of fresh oil.

When the oil pump 100 of the present oil changer 10 is operated, the new oil injection does not proceed from the beginning, or when the new oil is insufficient during the new oil injection, an error message is displayed and the oil pump 100 is stopped. The line to discharge it is closed. At this time, the microcomputer 120 of the oil changer stores the fresh oil injection remaining amount and replaces the new oil container T2 or replenishes the fresh oil and presses the “Start” key to open a line for discharging waste oil and operates the oil pump 100. As the waste oil is discharged, the oil pump 100 is automatically stopped after the new fuel injection residual amount is injected into the automatic transmission.

As such, after the oil pump 100 is stopped, the line for discharging the waste oil is closed and switched to the circulation line while checking the waste flow amount discharged to the waste oil container T1. When the total amount of waste oil discharged is confirmed, the oil changer operates the oil pump again to inject fresh oil as much as the total amount of waste oil discharged, and stops the oil pump to complete the oil change operation.

The oil change operation of the oil changer is to first discharge the waste oil in the oil pan by operating the automatic transmission, and then transfer the oil remaining in the system of the oil pump, torque converter and oil cooler inside the automatic transmission to the oil changer of the present invention. The new oil injected by the sequential push and discharge can be exchanged for new oil while maintaining a high exchange efficiency.

10 and 30 are views in which the oil changer according to the present invention is connected in a normal forward direction and discharged to the oil changer when the oil in the automatic transmission is larger than the prescribed amount in a state where the oil is circulated as shown in FIG. 7. .

In order to discharge the oil in the automatic transmission, the fifth electric drive EC5 is temporarily turned on only while the " oil discharge " key arranged on the key input unit 121 of the operation panel 210 is pressed. Driven is the flow path is switched in the fifth three-way valve (TV5), thereby oil is discharged to the waste oil container (T1) through the line (H13) in the fifth three-way valve (TV5). At this time, the electronic scale (S1) recognizes the increase value of the weight of the waste oil container (T1) and displays it on the display display window, and when the oil amount of the automatic transmission is discharged to a prescribed amount, it is applied to the "oil discharge" key on the operation panel 210. When the hand is released while removing the force, the fifth electric driver EC5 is turned off, and the state is switched back to the basic circulation state as shown in FIG. 7.

11 and 31 are the oil changer of the present invention is connected to the automatic transmission in the normal forward direction easily when there is less oil than the specified amount inside the automatic transmission in the state that the oil is circulated as shown in FIG. It is a figure which supplements with a transmission and meets a prescribed quantity.

To replenish oil in the automatic transmission, the oil pump 100 is temporarily turned on only while the user presses the " oil supplement " key arranged on the key input unit 121 of the operation panel 210. Will be. At this time, the first to fourth three-way valves TV1 to TV4 are in an off state. Therefore, when the oil pump 100 is driven, the oil of the new oil container S2 is sucked into and discharged into the oil pump 100 through the first and second three-way valves TV1 and TV2 and then the third and fourth three-way. It passes through the valves (TV3, TV4) and is injected into the automatic transmission through the second check valve (CV2) and the seventh three-way valve (TV7). At this time, the electronic scale (S2) recognizes the reduced value of the new oil container weight and is displayed on the display display window, and after the oil filling of the automatic transmission is made as much as desired, the user releases the hand holding the "oil filling" key. Since the pump 100 is turned off and stopped, the pump 100 is switched back to the normal forward circulation state as shown in FIG. 7.

12 is a view illustrating an oil circulation state when a user incorrectly connects an input / output coupler of an oil changer to an input / output adapter of an automatic transmission in an abnormal reverse direction.

In other words, the input coupler 81 of the oil changer is connected to the output adapter 84 of the automatic transmission, and the output coupler 83 is connected to the input adapter 82 in the reverse direction. Thereafter, after turning on the power switch 126 installed in the operation panel 210 of the oil changer 10, the engine of the vehicle is driven. At this time, all of the fifth to eighth three-way valves TV5 to TV8 are in an off state.

When the oil changer 10 is connected to the automatic transmission AT in the reverse direction, the oil discharged from the output adapter 84 is input coupler 81 → line H37 → seventh three-way valve TV7 → line ( H24) → Pressure gauge (PG) → Circulation line (H27) → Fifth three-way valve (TV5) → Parallel line (H28, H29) → Sight glass (70A) → Line (H32) → Sixth three-way valve (TV6) → Lines (H33, H36) → eighth three-way valve (TV8) → line (H38) → output coupler (83) → input adapter (82) → automatic transmission.

Since the slide ball moves in the direction (flow direction) through which the sight glass 70A passes, it is possible to check the flow of oil in the reverse direction.

After the oil is connected in the reverse direction and the flow is checked in the reverse direction, when the user selects the "line change switch" arranged in the key input unit 121 of the operation panel 210, as shown in FIGS. 13 and 22, the seventh and The eighth electric drives EC7 and EC8 are driven in an on state so that the flow path direction is switched to the seventh and eighth three-way valves TV7 and TV8 being in an on state.

When the flow direction is changed to the forward direction by selecting the "line selector switch" in this way, the oil discharged from the output adapter 84 is input coupler 81 → line (H37) → seventh three-way valve (TV7) → line (H35, H33) → 6th three-way valve (TV6) → parallel line (H32) → sight glass (70A) → parallel line (H29, H28) → 5th three-way valve (TV5) → circulation line (H27) → pressure gauge (PG) → line (H34) → eighth three-way valve (TV8) → line (H38) → output coupler (83) → input adapter (82) → circulates to automatic transmission. Since the slide ball moves in the direction (flow direction) where the oil passes through the sight glass 70A, the oil flow can be checked in the normal forward direction.

Even if the "line change switch" is selected as above, the line change operation is not performed during the program operation such as setting the oil level or during the normal oil change operation.

The oil changer for automobile according to the present invention does not apply pressure to the circulation line of the oil changer even if the user of the oil changer accidentally changes the line connection in the reverse direction as compared to other oil changers, and also stops the engine of the vehicle and disconnects the line connection. This eliminates the inconvenience of reconnecting and thereby prevents oil from sprinkling when disconnecting line connections.

When it is determined that the oil should be replaced by looking at the oil color in the state in which oil is circulated in the reverse direction, the "oil exchange" key arranged in the key input unit 121 of the operation panel 210 is pressed, and then the "start" key is pressed. When the "start" key is pressed, the valve shaft 152 is rotated by the electric actuator EC6 of the fifth and sixth three-way valves TV6, so that the fifth and sixth three-way valves TV5 and TV6 as shown in FIG. The flow path direction of is switched.

Therefore, the waste oil discharged from the output adapter 84 of the automatic transmission AT is input coupler 81 → line H37 → seventh three-way valve TV7 → lines H35 and H33 → sixth three-way valve TV6. → Parallel line (H31) → Sight glass (70B) → Parallel line (H30) → First check valve (CV1) → Parallel line (H28) → Fifth three-way valve (TV5) → Line (H13) → Waste oil container ( Discharged to T1).

When the waste oil of the automatic transmission is discharged to the waste oil container T1 and the waste oil is introduced into the waste oil container T1 by 0.5 →, the electronic scale S1 under the waste oil container T1 is recognized, and the electronic scale S1 is recognized. When the valve shaft 152 is rotated by the electric actuator EC6 of the sixth three-way valve TV6, the flow direction of the sixth three-way valve TV6 is switched to return to its original state (off state) as shown in FIG. 15. Will be.

When the sixth three-way valve TV6 is returned to its original state (off state), the waste oil discharged from the output adapter 84 of the automatic transmission is input coupler 81 → line H37 → seventh three-way valve ( TV7) → Line (H35, H33) → Sixth three-way valve (TV6) → Parallel line (H32) → Sight glass (70A) → Parallel line (H29, H28) → Fifth three-way valve (TV5) → Line (H13) → It is discharged to waste oil container (T1). Since the slide ball moves in the direction (flow direction) through which the sight glass 70A passes, it is possible to check the flow of the oil in the forward direction.

When the oil pump 100 is turned on to inject the new oil into the automatic transmission of the vehicle, the new oil value lines (H16, H21) stored in the new oil container (T2) on the electronic balance (S2) → the first three-way valve (TV1) ) → line (H15) → second three-way valve (TV2) → line (H14) → oil pump 100 → line (H17) → third three-way valve (TV3) → line (H18) → fourth three-way valve (TV4) ) → Line (H19) → Second Check Valve (CV2) → Line (H26, H34) → Eighth Three Way Valve (TV8) → Line (H38) → Output Coupler (83) → Input Adapter (82) → Automatic Transmission Will be injected.

As described above, even if the oil changer is connected to the automatic transmission in the reverse direction, it can simply be converted in the forward direction. After the conversion is made in the forward direction, oil can be simply changed by injecting fresh oil while removing the waste oil in the automatic transmission.

16 to 18 are diagrams for explaining the oil change process to the level gauge of the automatic transmission using the oil changer according to the present invention.

First, the level gauge hole insertion transparent hose 85 is connected to the output coupler 83 of the oil changer and inserted into the level gauge hole of the vehicle, and then the "gauge" arranged in the key input portion 121 of the operation panel 210. Press the "Oil change" key to set the oil change amount and then press the "Start" key. At this time, as the oil pump 100 is driven, the first, third and sixth electric actuators EC1, EC3, and EC6 are turned on, so that the first, third, and sixth three-way valves TV1, TV3, and TV6 are closed. Driven in an on state, and the second, fifth and eighth three-way valves TV2, TV5, and TV8 remain off, and the input coupler 81 is closed before connecting to other couplers. The valve TV7 may be in any state.

As the oil pump 100 is driven in this state, the waste oil in the automatic transmission AT is, as shown in Fig. 16, the gauge hole suction transparent hose 85 → the output coupler 83 → the line H38 → the eighth three way. Valve (TV8) → Line (H36, H33) → Sixth three-way valve (TV6) → Discharge line H31 → Sight glass (70B) → Parallel line (H30) → First check valve (CV1) → Parallel line (H28) → Fifth three-way valve (TV5) → Line (H27) → Pressure gauge (PG) → Line (H23) → First three-way valve (TV1) → Line (H15) → Second three-way valve (TV2) → Line (H14) → Oil pump 100 → line (H17) → third three-way valve (TV3) → line (H12) → starts to discharge to the waste oil container (T1).

As described above, when the waste oil in the automatic transmission starts to be discharged and 0.5 liter (→) of waste oil flows into the waste oil container T1, the electronic balance S1 recognizes this and the sixth electric driver EC6 is turned off as shown in FIG. 17. To change the flow path direction of the sixth three-way valve TV6. Therefore, the sight glass 70B stores the waste oil sample of the automatic transmission at the beginning of the oil change operation, and the backlight 60 of the rear side illuminates the sight glass 70B so that the color of the waste oil can be visually checked.

As such, when the flow path direction is changed by the sixth three-way valve TV6, the flow of oil flows into the gauge hole suction transparent hose 85 inserted into the level gauge hole LGH of the automatic transmission → the output coupler 83 → Line (H38) → 8th three-way valve (TV8) → Line (H36, H33) → Sixth three-way valve (TV6) → Line (H32) → Sight glass (70A) → Line (H29, H28) → Fifth three-way valve (TV5) → circulation line (H27) → pressure gauge (PG) → circulation line H23 → first three-way valve (TV1) → line (H15) → second three-way valve (TV2) → line (H14) → oil pump (100) ) → line (H17) → third three-way valve (TV3) → line (H12) → waste oil container (T1) is discharged. Since the slide ball moves in the direction (flow direction) through which the sight glass 70A passes, it is possible to check the flow of the oil in the forward direction.

After the waste oil is discharged from the automatic transmission by the oil exchange set amount as described above, the oil pump 100 is turned off and stopped, and the oil pump 100 is driven for new oil injection thereafter. At this time, the first to fourth three-way valves TV1 to TV4 are in an off state and the eighth three-way valve TV8 is in an on state.

When the oil pump 100 is driven again as described above, as shown in FIG. 18, the new oil value lines H16 and H21 stored in the new oil container T2 on the electronic scale S2 are first three-way valves TV1. → line (H15) → second three-way valve (TV2) → line (H14) → oil pump 100 → line (H17) → third three-way valve (TV3) → line (H18) → fourth three-way valve (TV4) → line (H19) → second check valve (CV2) → line (H26, H34) → eighth three-way valve (TV8) → line (H38) → output adapter (83) → gauge hole suction transparent hose (85) It is injected into the automatic transmission.

The oil change operation to the level gauge hole using the oil exchanger of the present invention as described above will be described in more detail with reference to FIG. 25. First, when the "gauge oil change" key arranged in the key input unit 121 of the operation panel 210 is pressed and the oil change amount is set, the oil changer starts the oil change operation. At this time, if "line change switch" is selected as ON, the error message is displayed and initialized. Then, press the "Gauge Oil Change" key from the beginning and set the oil change amount. The oil changer starts the oil change operation again.

Thereafter, the oil changer checks the weight of the waste oil container (T1) and the new oil container (T2), respectively. At this time, if the sum of actual waste oil value and set value in waste oil container (T1) is more than the upper limit programmed in microcomputer, the error message "Out of waste oil container" and a buzzer sound are output and after emptying the waste oil container (T1), Press the "Gauge oil change" key to continue the oil change operation. If the actual value of the new oil in the new oil container (T2) is less than the lower limit programmed in the microcomputer, an error message and a buzzer sound "new oil shortage" are output.When the new oil container is replaced or new oil is refilled, the "Gauge oil replacement" key is restarted. Press to continue the oil change operation.

If there is no problem in the weight of the new oil container (T2) and the waste oil container (T1), the oil pump (100) is operated so that the amount of waste oil sucked from the automatic transmission (AT) through the sight glass (70B) waste oil container (T1) After being discharged to, the oil is discharged to the waste oil container T1 through the sight glass 70A. At this time, a waste oil sample is collected on the sight glass 70B. In this way, even if the oil pump 100 is operated, if there is no change in the weight of the waste oil container for a specified time from the beginning of the discharge of the waste oil of the automatic transmission, an error message is displayed and the oil change operation is stopped and initialized.

Thereafter, if the weight of the waste oil container (T1) is continuously increased and there is no change for a specified time, the microcomputer 120 recognizes that the oil in the oil pan 1 of the automatic transmission is not discharged, and at this time, the amount of oil discharged. After the microcomputer 120 stores and stores the oil pump 100, the intake and discharge of waste oil are blocked.

When the oil pump 100 is operated again for new oil injection, new oil is injected into the new oil container T2 as much as the discharged amount of waste oil stored in the microcomputer 120 of the oil changer, and the oil pump 100 is stopped. Supply will be interrupted. When the new oil injection is performed as described above, if the new oil injection does not proceed from the beginning of the new oil injection, or if the new oil amount is insufficient during the new oil injection, an error message is displayed and the microcomputer 120 of the oil changer remembers the remaining amount of the new oil injection. If T2) is replaced or replenished with fresh oil and the "start" key is pressed, the oil pump 100 is operated again, and after the fresh oil injection residual amount is injected into the automatic transmission, the oil pump 100 is stopped, so the fresh oil supply is stopped.

After waiting for a specified time so that the oil is circulated and diluted in the automatic transmission in the state where the engine of the vehicle is operated, and checking the new oil injection amount and the set amount, if the new oil injection amount is small, the oil pump 100 is operated to operate the oil of the automatic transmission. Injecting the oil back into the oil changer and repeating the process of injecting the new oil, it is injected as the set amount. In this way, when the new oil is injected by the set amount, the oil pump 100 is operated to collect a sample of the exchanged oil to the sight glass 70A, and stop the oil pump 100 to complete the oil change operation.

In the oil change operation using the oil changer according to the present invention, the oil change operation is performed by completely inhaling the oil inside the oil pan 1 of the automatic transmission with the oil changer while the engine of the vehicle is operating. The oil change can be completed by circulating and diluting the oil inside the automatic transmission and repeating the suction and injection of the oil.

As described above, the oil change operation through the level gauge hole of the automatic transmission includes the input / output adapters 82 and 84 of the automatic transmission according to the type of the vehicle, and the input coupler 81 and the output coupler 83 of the oil changer. Even when it is difficult to connect to the oil through the level gauge hole (LGH) of the automatic transmission (AT) can be easily performed, thereby increasing the user's convenience.

19 is a view showing for injecting the amount of oil set by the user to the automatic transmission to the automotive oil changer according to the present invention.

First, in order to inject a new amount of oil set by the user, press the "oil setting injection" key arranged on the key input unit 121 of the operation panel 210, set the injection amount, and then press the "start" key. At this time, check the weight of the new oil container (T2) in the oil changer, and if the actual new oil value in the new oil container (T2) is less than or equal to the set value, an error message and a buzzer sound "no new oil" are output and the new oil container is replaced or supplemented with new oil. After this, the oil filling operation can be continued by pressing the "Inject oil setting" key again from the beginning. In addition, the first to eighth three-way valves TV1 to TV8 are all driven in an off state, and the input coupler 81 is closed because it is not connected to other couplers.

In this state, if the actual value of the new flow rate is larger than the set value, the oil pump of the oil changer is operated. When the oil pump 100 is driven and driven, it is stored in the fresh oil container T2 on the electronic balance S2. New oil price line (H16, H21) → first three-way valve (TV1) → line (H15) → second three-way valve (TV2) → line (H14) → oil pump (100) → line (H17) → third three way Valve (TV3) → line (H18) → fourth three-way valve (TV4) → line (H19) → second check valve (CV2) → line (H26) → pressure gauge (PG) → line (H27) → fifth three way Valve (TV5) → Line (H28, H29) → Sight glass (70A) → Line (H32) → Sixth three-way valve (TV6) → Line (H33, H36) → Eighth three-way valve (TV8) → Line (H38) → the output coupler 83 is injected into the level gauge hole LGH of the automatic transmission through the gauge hole suction transparent hose 85.

Even if the oil pump 100 of the oil changer is operated as described above, if there is no change in the weight of the fresh oil container for a specified time from the initial time of injecting fresh oil, an error message is displayed and the oil filling operation is stopped and initialized again. Press the key to continue the oil filling operation, but add oil of the set amount and stop the oil pump to complete the oil filling operation.

Such oil injection can replace or repair the automatic transmission of the vehicle so that the user can easily inject a prescribed amount of oil into the automatic transmission when there is no oil in the automatic transmission.

20 and 29 are the oil changer of the waste oil container T1 while outputting the display part of the error message and outputting a buzzer when the waste flow rate in the waste oil container T1 of the oil changer according to the present invention reaches the upper limit set in the microcomputer. Figure is a view showing for explaining the process of discharging to the outside.

In order to discharge the waste oil of the waste oil container T1 provided in the oil changer which is the equipment of the present invention to the outside of the oil changer, press the " waste oil discharge " key arranged in the key input unit 121 of the operation panel 210, and then " Press the "Start" key. At this time, the second three-way valve TV2 is driven in an on state.

When the oil pump 100 is turned on and driven in this state, the waste oil in the waste oil container T1 on the electronic balance S1 is line H11 → second three-way valve TV2 → line H14 → oil pump (100) → line (H17) → third three-way valve (TV3) → line (H18) → fourth three-way valve (TV4) → line (H19) → second check valve (CV2) → line (H26, H24) → The seventh three-way valve TV7 → line H37 → input coupler 81 → waste oil discharge adapter 88 is discharged to the external waste oil container.

At this time, if there is no change in the weight of the waste oil container for the specified time from the beginning of the discharged waste oil, an error message is displayed and the waste oil discharge operation is stopped and initialized. Then, the waste oil discharge operation can be continued by pressing the "waste oil discharge" key from the beginning. If the weight of the waste oil container does not change for a specified time, the microcomputer 120 recognizes that no further waste oil is discharged and stops the oil pump 100 to complete the waste oil discharge operation.

21 and 27 are views for explaining the process of oil replacement of the power steering system using an oil changer according to the present invention.

First, in order to change the oil of the power steering system, the input / output adapter of the oil reservoir tank is disconnected, and then the input coupler 81 of the oil changer and the power steering oil input adapter 86 of the vehicle are output coupler 83. And the power steering oil output adapter (87).

In this state, when the "power oil exchange" key arranged on the key input unit 121 of the operation panel 210 is pressed, the weights of the waste oil container T1 and the fresh oil container T2 are respectively checked. At this time, if the actual value of the waste oil in the waste oil container (T1) is higher than the upper limit programmed in the microcomputer, an error message and a buzzer sound "Out of waste container" are output. In this case, after emptying the waste oil container (T1), the "power again" from the beginning. Press the "Oil change" key to continue the oil change operation. If the actual value of new oil in T2 is less than the lower limit programmed in the microcomputer, the error message "New oil lack" and a buzzer sound are output.When the new oil container is replaced or new oil is refilled, the "Power oil exchange" key is restarted. Press to continue the oil change operation.

In addition, when the "line change switch" is ON, an error message is displayed and initialized, and the oil change operation is continued by pressing the "power oil change" key again from the beginning.

In this way, if there is no problem in the actual values of the waste flow rate and the new flow rate, when the "Start" key is pressed, the fourth and fifth electric actuators EC4 and EC5 are driven in an on state and the fourth and fifth three-way valves ( TV4 and TV5 are driven on. Since the oil pump 100 is turned on and driven as described above, the new oil price in the new oil container T2 on the electronic balance S2 is H16, H21 → the first three-way valve TV1 → H15. 2 Three-way valve (TV2) → Line (H14) → Oil pump 100 → Line (H17) → Third three-way valve (TV3) → Line (H18) → Four-way three-way valve (TV4) → Line (H20) → Third 3 is injected into the vehicle's power steering system through the check valve CV3 → line H25, H24 → seventh three-way valve TV7 → line H37 → input coupler 81 → input adapter 86.

As described above, the waste oil is discharged from the output adapter 87 of the power steering system by the amount of fresh oil discharged by the oil pump 100 into the power steering system. The waste oil discharged from the output adapter 87 of the power steering system is output coupler 83 → line H38 → eighth three-way valve TV8 → line H36 and H33 → sixth three-way valve TV6 → Line (H32) → sight glass (70A) → parallel lines (H29, H28) → fifth three-way valve (TV5) → line (H13) → discharged to the waste oil container (T1). At this time, since the slide ball moves in the direction (flow direction) through which the sight glass 70A passes, the oil can be checked in the forward direction, and the backlight 60 behind the sight glass 70A is the sight glass ( 70A) can be used to visually check the color of the waste oil.

When the oil pump 100 is driven as described above and there is no change in the weight of the fresh oil container for a specified time from the initial time of injecting the fresh oil, an error message is displayed and the oil change operation is stopped and initialized again. Press to continue the oil change operation.

When the injection of 1 liter of fresh oil to the power steering system is completed as described above, the oil pump 100 is stopped, the line for discharging is closed, and the line for oil injection and the pressure regulator valve (PCV1) are closed to complete the oil change operation.

As the new oil discharged by the oil pump 100 is injected into the power steering system as described above, a part of the new oil passes through the pressure regulator valve PCV1 to the line H21 → the first three-way valve TV1 → the line H15 → the first oil. 2 Three-way valve (TV2) → Line (H14) → Oil pump (100) → Line (H17) → Third three-way valve (TV3) → Line (H18) → Four-way three-way valve (TV4) → Line (H20) The pressure is kept stable while circulating back to the pressure regulator valve (PCV1). Therefore, even if the power steering system is structurally weak, the safety of the new oil injected into the power steering system can be maintained within 2 to 3 kg / cm 2.

In other words, the discharge pressure in the oil pump 100 is 6 to 8 kg / cm 2, without being transmitted to the power steering system as it is. It can proceed stably while preventing the damage of the steering system, and can further secure convenience and stability for the user by eliminating the risk caused by the high pressure of the new oil injected.

24 is a flowchart showing an oil change operation state by a predetermined set amount using the oil changer according to the present invention. Again, turn on the oil changer, press the "Set oil change" key, set the oil change amount and press the "Start" key to check the weight of the waste oil container (T1) and the fresh oil container (T2) in the oil changer, respectively. At this time, if the sum of actual waste oil value and set value in waste oil container (T1) is more than the upper limit programmed in microcomputer, the error message "Out of waste oil container" and buzzer sound are output.In this case, after emptying waste oil container (T1) The oil change operation can be continued by pressing the "Change oil setting" key from the beginning. If the actual value of new oil in the new oil container (T2) is less than the lower limit programmed in the microcomputer, an error message of "new oil lack" and a buzzer sound are output.In this case, after replacing the new oil container or replenishing new oil, the oil is restarted from the beginning. Press the "Change setting" key to continue the oil change operation.

If there is no problem in the weight of the new oil container and the waste oil container, since the process of collecting the waste oil sample on the sight glass 70B is performed in the same way as the "oil exchange" operation described above, a detailed description thereof will be omitted.

FIG. 26 is a flowchart illustrating an oil suction operation state of an oil changer according to the present invention, which is inserted into a level gauge hole of a vehicle by connecting a level hose hole insertion transparent hose 85 to an output coupler 83 of an oil changer. Next, the suction oil is discharged from the automatic transmission.

In this way, the oil flow in which the oil is sucked out of the level gauge hole and discharged is performed in the same manner as in FIG. 17. For this oil flow, when the oil changer is turned on, the oil suction key is pressed and the waste oil container T1). Check the weight. In this case, when the "line change switch" is turned on, an error message is displayed and initialized. Therefore, the "Oil Suction" key can be selected again from the beginning. If the actual value of the waste oil in the waste oil container (T1) is higher than the upper limit programmed in the microcomputer, an error message and a buzzer sound "Out of waste oil container" are output.In this case, after emptying the waste oil container (T1), the oil suction is started again from the beginning. You can only start by pressing the "" key.

If there is no problem in the actual value of the waste flow rate, the oil pump 100 is operated to discharge the oil into the waste oil container T1 through a line for sucking and discharging the waste oil. At this time, if there is no change in the weight of the waste oil container for the specified time from the beginning of the discharged waste oil, an error message is displayed and the oil pump is stopped and the line for sucking and discharging the waste oil is blocked. If there is no change for a specified time after the weight of the waste oil container is increased, the micro pump recognizes that the oil in the fan (1) or the outer container of the automatic transmission is completed and no more oil is sucked into the device. ) Is stopped and the line for intake and discharge of waste oil is shut off, completing the oil suction operation.

32 is a flowchart showing a freshing oil change operation state using the oil changer according to the present invention. The flashing oil change operation above is an oil change operation of exchanging oil with a secondly expensive oil after performing oil exchange using a low cost oil.

This oil operation, as described above, after performing the first "oil exchange" to "set amount exchange" with a new low-cost oil, and then replaced with a new oil of high (high quality) on the electronic balance (S2) and the operation panel 210 ), Press the "flashing oil change" key. In this way, when the "Freshness Oil Change" key is pressed, subsequent oil change operations are performed in the same way as when the "Set quantity change" key is pressed, but only the waste oil in the sight glass (70B) which is the initial process of oil change operation is performed. The only difference is that only the sampling process is omitted. The reason for skipping the waste oil sample is that the fresh oil is already in the primary transmission in the automatic transmission, so the oil condition before and after the oil change cannot be confirmed.

In other words, even if a set amount oil change is additionally performed, the sample glass of the oil changer 10 in the sight glass 70A is kept before the first oil (waste oil) change in the automatic transmission so that it can be compared with the sample after the additional oil change. have. That is, when additional set oil change is performed for the automatic transmission of the same vehicle, the operator can easily judge the result of oil change by continuously storing the waste oil sample before the initial replacement of the Invar automatic transmission and comparing it with the sample after the additional oil change. can do.

As described in detail above, the automotive oil changer according to the present invention reduces the number of components of the oil changer by providing three-way valves on lines for changing the direction of oil and controlling the three-way valves with respective electric actuators. In addition, it can be simplified and automatically controlled, and the oil filled in the automatic transmission system can be changed appropriately through the work environment according to the automatic transmission of each vehicle type, that is, the input / output adapter or the level gauge hole.

In addition, the present invention provides a pressure regulator valve in a line connected to an input adapter through a check valve to a branch supply line at the rear of the oil pump and connected to the oil pump in front of the check valve, thereby preventing any damage to the power steering system. It can be kept constant at low pressure, which can also be applied to oil change in power steering systems.

Claims (3)

A new oil container and an oil container placed on the electronic balance, an oil pump connected to a suction line to suck and discharge oil from the new container and waste oil container, and at least one in the middle to supply the oil discharged from the oil pump to an automatic transmission. Supply line having the above check valve and having an input coupler at one end, connected from the automatic transmission to the waste container, at least one check valve is provided in the middle and the discharge line having an output coupler at one end, the discharge line In the oil changer for a vehicle comprising a parallel line provided with a sight glass and at least one check valve is provided so as to sample or confirm flowing waste oil and fresh oil, The first and second three-way valves between the oil pump and the check valve are installed such that the oil of the new oil container is sucked through two three-way valves and the oil of the waste oil container is sucked through one three-way valve in the suction line in front of the oil pump. The third and fourth three-way valves, which are discharged to the waste oil container through one three-way valve and connected through two three-way valves, through a first three-way valve and a line in the line between the check valve and the input coupler. One branch line having a check valve is provided between the fourth and seven three-way valves while the seventh three-way valve is connected, and the check valve and the seven-way three-way valve branch off from the discharge line between the waste container and the check valve. A fifth three-way valve connected through the circulation line up to the line between them, the branch of the parallel line to selectively divert the oil flow to either side of the parallel line A sixth three-way valve provided in the sixth three-way valve and the discharge line between the six-way valve and the output coupler is provided with an eight-way three-way valve connected to the circulation line between the fifth and seventh three-way valves while being connected to the sixth and seventh three-way valves. Automotive oil changer characterized in that. The method of claim 1, The three-way valve is an oil changer for an automobile, characterized in that each of the electric actuators for controlling the direction change of the flow path through the microcomputer and the control unit. The method of claim 1, A line is connected from the line between the fourth three-way valve and the third check valve to the first three-way valve, and a pressure regulator valve is provided to constantly adjust the oil pressure supplied to the third check valve. Automotive oil changer characterized in that.

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