JPH01105097A - Working oil replacing device for torque converter - Google Patents

Abstract

PURPOSE:To decrease an replacing time for a working oil by providing a controller which controls extracting and supplying means for the working oil. CONSTITUTION:A cycle of extracting old oil and supplying new oil is started by setting a detector 6, driving an engine and pushing a start switch. In a controller 10, an electromagnetic valve V1 is opened at first and a pump P1 is driven. The electromagnetic valve V1 is closed and the pump P1 is stopped by extracting a specified amount of oil from an oil pan T. Next, an electromagnetic valve V2 is opened, a pump P2 is driven, and when a supplied amount of oil to the oil pan T reaches a specified amount, the electromagnetic valve V2 is closed and the pump P2 is stopped. The cycle to drive the pump P1 again is successively performed.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a device for changing hydraulic oil of a torque converter, so-called torque converter oil.

[Prior Art] As shown in FIG. 1, a torque converter usually includes an oil pan T, and the torque converter oil in the torque converter and transmission itself and the torque converter oil in the oil pan T are passed through a feed pipe L1 and a return pipe L2. The oil is circulated by an oil pump (not shown) driven by the engine.

When replacing this torque converter oil, even if only the torque converter oil in the oil pan T is replaced via the oil gauge pipe G, the torque converter oil in the torque converter cannot be replaced. Drain the torque converter oil in the tank, refill it with new torque converter oil, and run the engine for, for example, 1 minute.
The torque converter oil inside the torque converter is guided into the torque converter, and the torque converter oil inside the torque converter is transferred to the oil pan T.
However, during this time there is a considerable mixture of old and new oil), drain the torque converter oil from the oil pan T again, refill it, and drive the engine, repeating the procedure 3 or 4 times to replace it. Ta.

Therefore, it is necessary to stop the engine three or four times, which takes time.

[Object of the Invention] Accordingly, an object of the present invention is to provide a hydraulic oil exchange device for a torque converter that shortens the time required to change the hydraulic oil.

[Principle of the Invention] As a result of various experiments, the present inventor found that replacing the torque converter oil is more efficient if the torque converter oil is drained and refilled while the engine is running.9 The present invention was made with attention to this point. It is something that

[Structure of the Invention] According to the present invention, a hydraulic oil extraction means and a hydraulic oil supply means are connected to one nozzle, and a predetermined amount of hydraulic oil is extracted at a predetermined time interval while the engine is running. A control means is provided for controlling the hydraulic oil extraction means and the hydraulic oil supply means so as to supply oil.

[Operations and Effects of the Invention] Therefore, the control means continuously extracts a predetermined amount of hydraulic fluid and supplies a predetermined amount of hydraulic fluid at predetermined time intervals while the engine is running, thereby efficiently replacing the hydraulic oil and reducing the replacement time compared to the conventional method. In comparison, it can be shortened to a large width.

[Preferred Embodiment 84] When carrying out the present invention, the hydraulic oil removal means is composed of a waste oil container, a discharge pipe, a solenoid valve, a suction pump, and a hose,
Preferably, the hydraulic oil supply means includes a fresh oil container, a suction pipe, a solenoid valve, a discharge pump, and a hose.

In carrying out the present invention, it is preferable that the control means uses a control device constituted by a microcomputer.

When implementing the present invention, the control device includes a preset switch,
It is preferable to connect a keyboard equipped with a start switch and the like to a buzzer, speaker, etc. that informs the timing of engine drive, notes on termination, etc.

In the practice of the present invention, the withdrawal and supply of hydraulic fluid at predetermined time intervals and predetermined amounts may include, for example, a withdrawal of 1.5 g and a supply of, for example, 1.5 g, for example, 1 minute, 4 minutes, and 4 minutes.
Preferably, each step is carried out four times at a time interval of minutes.

[Example] The present invention will be described in detail below with reference to the drawings.

In FIG. 1, a waste oil container 2a placed on a load cell W and a new oil container 2b are provided at the bottom of the apparatus main body 1.

A discharge pipe 3a is inserted into the waste oil container 2a, and the discharge pipe 3a is inserted into the waste oil container 2a.
a is connected to a suction pump P1 via a solenoid valve ■1. This suction pump P1 is connected to the nozzle 5 through the port 4a.
The waste oil container 2a, the discharge pipe 3a, the solenoid valve v1, the suction pump P1, and the port 4a constitute a hydraulic oil extraction means. Similarly, new oil container 2b,
The suction pipe 3b, the electromagnetic valve V2, the discharge pump P2, and the hose 4b constitute a hydraulic oil supply means.

On the other hand, a control device 2 which is a control means is mounted on the upper part of the device main body 1.
10 is provided, and an engine drive detector 6, for example, a current detector that detects the ignition current of a plug, is connected to the control device R10, and an indicator 7 and a preset switch provided on the upper part of the device main body 1 are connected. , a keyboard 8 equipped with a start switch, a replenishment switch, an extraction switch, an ejection switch, etc., and a speaker 9 are connected.

In FIG. 2, a control device 210 is composed of a microcomputer, is provided with a central processing unit (CPU) 11, and controls the pumps Pi, P through an input/output device (Ilo) 12.
It is connected to each second class device. Therefore, signals from each device are input to the central processing unit 11 via the input/output device 12, and signals from the central processing unit 11 are input to the input/output device 12.
The information is transmitted to each of the above-mentioned devices via the . In addition to the central processing unit 11, the control device 10 also includes a ROM (ROM).
M) 13, a RAM (RAM) 14, and a clock 15 are provided.

Next, the operation will be explained mainly with reference to FIGS. 3 to 6.

Figure 3 shows the flow of replacing torque converter oil.

The torque converter oil change of the present invention is performed using the engine drive detector 6.
Set it on the cable plug, insert the nozzle into the oil gauge pipe G, drive the engine, and press the start switch on the keyboard 8. 8
When you press the start switch (step S1), the speaker 9 will say "Insert the nozzle 5 into the oil gauge pipe G,
Please set the engine drive detector 6 to the cable plug, drive the engine, and then press the start switch.'' and the start switch is returned to OFF.
Step S2), insert the nozzle 5, set the detector 6, and start the engine (Step S3). Press the start switch to start the oil extraction/refueling cycle (Step S4). valve v1
is opened and the pump P1 is driven (step S5).

Then, the amount to be extracted is measured by a load cell W until a predetermined amount Wa or air is sucked in and no more can be extracted (for example, 1
．． 56) When the oil is removed from the oil pan T, the solenoid valve v1 is closed and the pump P1 is stopped (step 56).Next, the solenoid valve v2 is opened and the pump P2 is driven (step S7), and the oil pan T is closed. The amount of oil supplied to is the specified amount W
b (for example, 1°572), the solenoid valve V2 is closed and the pump P2 is stopped (step S8), and after a predetermined time Ta (for example, 1 minute) has elapsed (step S9), the solenoid valve V1 is opened and the pump P1 is driven. (Step 510).

Then, when the amount of extraction reaches a predetermined amount or until the air is sucked in and no longer comes out (for example, 1.5 m2), the solenoid valve 1 is closed and the pump P1 is stopped (Step 511), and then the solenoid valve V2 is opened. , drives pump P2 (step 912), and the amount of oil supplied reaches a predetermined amount Wd.
(for example, 1.5j2), the solenoid valve v2 is closed and the pump P2 is stopped (step 513), and after a predetermined time Tb (for example, 4 minutes) has elapsed (step 514), the solenoid valve v1 is opened and the pump P1 is driven ( Step 515), and when the amount of extraction reaches a predetermined amount We or until no more air is extracted (for example, 1.512) (the solenoid valve v1 is closed and the pump P1 is stopped, step 816).
, the solenoid valve v2 is opened and the pump P2 is driven (step 517), and the oil supply amount reaches a predetermined amount Wf (for example, 1.5
1, the solenoid valve v2 closes and the pump P2 stops (step 918), and after a predetermined time Tc (for example, 4 minutes) has elapsed (step 519), the solenoid valve v1 is opened and the pump P1 is driven (step 520). , when the amount of extraction reaches a predetermined amount Wg (for example, 1.5j2), the solenoid valve V1 closes and the pump P1 stops (Step 521), and the solenoid valve V2
is opened and pump P2 is driven (step 522).

Then, the refueling amount is a predetermined amount Wh (for example, the current refueling amount is 1
．． When the total oil supply amount reaches 5g or 6j2), the solenoid valve v
2 is closed and pump P2 is stopped (step 523), the speaker 9 says, ``The torque converter oil has been replaced. Remove the nozzle 5 from the oil gauge pipe G, insert the oil gauge, and check the oil level.'' As a result, if the level is normal, move to the end flow, if the level is low, perform the replenishment flow, and if the level is high, perform the extraction flow, then enter the end flow.'', and then switch the start switch SW. Turn it back to OFF (
Step 525), the control ends. The operator then removes the engine drive detector 6, pulls out the nozzle 5, and checks the oil level after stopping the engine.

Figure 4 shows the replenishment flow. If the oil level is low, insert the nozzle 5 into the oil gauge pipe G again and press the preset switch on the keyboard 8 (step 53).
0), preset the desired amount Wx (step 531)
Then, when the replenishment switch on the keyboard 8 is pressed (step 532), the control bag C10 opens the solenoid valve v2 and drives the pump P2 (step 533), and the amount of refueling is measured by the load cell W and the preset amount Wx. When new oil is supplied, the solenoid valve V2 is closed and the pump P2 is stopped (step S30, the control ends).

Figure 5 shows the extraction flow. If the oil level is high, insert the nozzle 5 into the oil gauge pipe G and press the preset switch on the keyboard 8 (step 536).
, preset the desired amounts W, y (step 337);
Then, when the extraction switch on the keyboard 8 is pressed (step 538), the control device 10 opens the solenoid valve v1 and drives the pump P1 (step 539), and the amount of oil supplied is measured by the load cell W, and the preset amount wy is When oil is supplied, the solenoid valve v1 is closed, the pump P1 is stopped (step 540), and the control ends.

FIG. 6 shows the termination flow, and the exchange flow shown in FIG. 3,
Alternatively, when the replenishment flow shown in FIG. 4 or the extraction flow shown in FIG. The device 10 is a solenoid valve ■1
is opened, and the pump P1 is driven in reverse to return the oil in the nozzle 5 and hose 4a to the waste oil container 2a (step 543).
). Then, after a predetermined time tx (for example, 5 seconds) has elapsed, the solenoid valve v1 is closed and the pump P1 is stopped.Step 544
), then open the solenoid valve v2 and drive the pump P2 to return the new oil in the hose 4b to the new oil container 2b (step 5
45), and when the predetermined time ty has elapsed, 1. The magnetic valve V
2 is closed and pump P2 is stopped (step 346);
End control.

FIG. 7 shows the waste oil processing flow. When the waste oil container 2a is full, bring an empty container, insert the nozzle 5, and press the discharge switch on the keyboard 8 (step 348).
The control device 10 opens the solenoid valve 1 and drives the pump P1 in reverse to discharge the waste oil in the waste oil container into an empty container (step 849), and when the waste oil container 2a is empty, that is, the amount of waste oil detected by the load cell W is When zero (WO) is reached, the solenoid valve V1 is closed and the pump P1 is stopped (step 550).
), end control.

If the oil in the new oil container 2b runs out, you can replace the entire container with new oil, or insert the nozzle 5 into another new oil container, open the valve 2, and reverse the pump P2 to replenish the oil. It's okay.

[Summary] As explained above, according to the present invention, while the engine is running, the control device controls the solenoid valve and the pump to continuously drain oil and supply oil, thereby efficiently replacing the oil. The replacement work time can be greatly reduced compared to the conventional method.

[Brief explanation of the drawing]

Fig. 1 is an overall configuration diagram showing one embodiment of the present invention, Fig. 2 is a control block diagram, Fig. 3 is a flowchart of exchange, Fig. 4 is a flowchart of replenishment, and Fig. 5 is a flowchart of extraction. Figure 6 is a flowchart of termination, Figure 7
The figure is a flowchart of waste oil treatment. G...Oil gauge vibe Pl, P2...
Pump vl, v2...Solenoid valve W...Load cell 1...Device body 2a...Waste oil container
2b...New oil container 4a, 4b...Hose 5
...Nozzle 6...Current detector 8...Keyboard 9...Speaker 10...Control device

Claims (1)

[Claims] a hydraulic oil extraction means and a hydraulic oil supply means connected to one nozzle; and a hydraulic oil extraction means configured to extract a predetermined amount of hydraulic oil at predetermined time intervals during engine operation and to supply a predetermined amount of hydraulic oil. A hydraulic oil exchange device for a torque converter, comprising: a control means for controlling a hydraulic oil supply means; and a hydraulic oil supply means.