JPH0224252A - Atf exchanger - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Industrial Application Field 1] This invention is based on the invention! 1! Regarding a device for replacing ATF (automatic transmission fluid) used in automatic transmissions of lJI'll, it is particularly equipped with a nozzle that can be inserted into the filler tube of an automatic transmission of a car, and the nozzle is inserted into the automatic transmission from the filler tube. Insert it into the oil pan of the old ATF.
'Relating to the type of inhalation and infusion.

[Prior art and its problems 1 Generally, A.T.
Only a part of F is stored, and the AT is removed from the oil pan.
Since it is not possible to remove F completely destroyed, the amount that can be removed is repeatedly replaced every - time. In this case, each time you replace the vehicle, you must start the car's engine, operate the automatic transmission, and send the unreplaced ATF into the oil pan. It requires repeated opening and closing, and the worker is half-attended! There was an inconvenience that had to be done.

On the other hand, it may be possible to improve this by performing multiple exchanges in succession while applying the automatic 1μ ennon.
If the replacement operation is interrupted because the waste oil tank becomes full or the new oil tank becomes empty, the ATF in the oil pan will remain below the specified amount, resulting in this condition. If the engine were to continue to run, air would get mixed into the ATF, causing malfunction and increasing the temperature of the ATF.

[Means for solving the problem 1 This invention addresses these points and
A waste oil amount detection means for detecting the amount of ATF in a waste oil tank storing new ATF, and an AT in a new oil tank storing new ATF to be injected.
A new oil amount detection means for detecting the amount of F, a presetting means for presetting the amount of ATF to be replaced, and a continuous amount of oil that can be replaced at one time in a plurality of times according to the amount of replacement set by the presetting means. At the same time, before each replacement, the A of the waste oil tank and the new oil tank given by both detection means is
Each TF amount is checked, and if it is detected that either the waste oil tank is full or the new oil tank is empty due to suction or injection, the system stops the replacement operation for that time, and lights, alarms, etc. The ATF amount in the waste oil tank and the new oil tank is checked before each oil change, and the amount of ATF in the waste oil tank and the new oil tank is checked in advance of each oil replacement, and the amount of ATF in the waste oil tank and the new oil tank is checked to prevent the waste oil tank from being full or the new oil tank from being empty. The system has been improved to protect the automatic transmission by stopping the replacement operation at that time if it detects that the transmission is changing.

[Example 1 Examples thereof will be described below based on the drawings.

tjS1 is an explanatory diagram of the usage state of one embodiment of the present invention, FIG. 2 is an explanatory diagram of the configuration of the same embodiment, and FIG. 3 is an enlarged explanatory diagram of the main part of the same embodiment. Reference numeral 1 denotes an ATF exchange device main body, which has a hose 2 extending outward and a nozzle 3 provided at its tip. The nozzle 3 is made of a tube material having a thickness and length that can be inserted into a filler tube F provided in an automatic transmission fiAT of an automobile V, and is normally housed in a holder 4 provided on one side of the main body 1. .

6 is a waste oil tank that stores the old ATF sucked in from the automatic transmission AT, and 7 is the new ATF that is injected into the automatic transmission fiAT.
These are fresh oil tanks for storing TF, and are placed on support stands 8 and 9 formed below the main body 1, respectively. The support stands 8 and 9 are suspended and supported from the main body 1, and weight detectors IO and 11 each equipped with a load cell are provided on the support parts to detect the weight of both tanks 6 and 7 and detect the ATFi in the tank.
It is used to detect the inflow/outflow amount of L and ATF.

Inside the main body 1, a pump 12, electromagnetic valves 13 and 14, and conduits 15-1 to 15-3 connecting these are provided. The pump 12 is driven by a motor 16 that can rotate in forward and reverse directions, and is located in a common conduit 15-1 and is configured to be capable of both suction and injection operations. The solenoid valve 13 is provided in a waste oil pipe line 15-2 that communicates with the waste oil tank 6, and is opened when the pump 12 is driven to form a flow path for sucking in or discharging old ATF.

The solenoid valve 14 is connected to a new oil pipe line 15- which communicates with the inside of the new oil tank 7.
3 to form a flow path for injecting or replenishing new ATF.

Reference numeral 20 denotes a control section provided in the main body 1, which operates the pump 12, upstream solenoid valves 13, 14, etc. in response to signals from the operation panel 21 and the weight detectors 10, 11. 22 is Microcombi Toyoyu, CPU23,
The memory 2 includes a memory 24 and an input/output circuit 25.
Control is performed according to the program given in step 4.

26 is a drive circuit for driving/stopping the pump motor 16 and switching between forward/reverse rotation; 27 and 28 are solenoid valves 13 and 28;
14 is a drive circuit that opens each of them.

The operation panel 21 includes a keyboard 30 and a display board 31.
and an alarm output section 32. The keyboard 30 includes a manual operation section 33, a fully automatic operation section 35, a new oil replenishment key 36, a waste oil discharge key 37, a preset key 38, a current amount display key 39, a stop key 40, a display clear key 41, and an error reset key. 42 are provided. The manual rubbing section 33 has a suction key 33-1.
and an injection key 33-2, and by pressing the respective keys, a suction operation for extracting ATF older than the first shift fiAT and an injection operation for discharging ATF from the new oil tank 7 can be performed. The fully automatic operation unit 35 includes an injection amount setting key 35-1 and a start key 35-2, and when the amount of new oil to be injected is preset with the injection amount setting key 35-1 and the start key 35-2 is pressed, ff141 ! As shown in the 70-chart of I, suction and injection are repeated until the injection amount reaches the set value. The preset key 38 is
It presets the amount of ATF movement for the suction and injection operations provided by the manual operation section 33, the new oil replenishment operation provided by the new oil replenishment key 36, and the waste oil discharge operation provided by the waste oil discharge key 37. It has a key and an ee key, and the amount of ATF can be set in units of 100cc. The current amount display key 39 is used to display the ATF in the tanks 6 and 7 on indicators 45 and 46, which will be described later, based on the weight given by the weight detection units 6to and 11.
Display the current amount. The stop key 40 stops each operation given by this device, and the display clear key stops each display f described below.
Clear the data display in f1S45-48.

The normal reset key 42 is used to cancel an abnormality display on an abnormality display section 50, which will be described later.If an abnormality is displayed, the normal state can be restored by pressing this key after the abnormal state is resolved.

The display board 31 includes a set amount display section 45, an inhalation/injection amount display section 46, a total amount display section 48, an operation display section 49,
and an abnormality display section 50 are provided. Setting display section 4
5, the injection amount set according to the operation of the injection amount setting key 35-1 in the fully automatic operation section 35 and the amount set in the preset key 38 are displayed. The suction/injection ma display section 46 displays the amount of ATF transferred in accordance with the suction operation or injection operation performed in each of the operation sections 33 to 35. The replacement number display section 47 displays the number of replacements during fully automatic ATF replacement, and the total amount display section has LED lamps arranged according to the operations that can be performed with this device, and indicates whether or not the operation is being executed. Display blinking. In the abnormality display section 50, the LED
Lamps 50-1 to -4 are arranged for each abnormality item, and are lit or blinked when an abnormality occurs.

Next, the operation of the stiff embodiment will be explained.

Full automatic operation: With the automatic engine running, insert the nozzle 3 into the filler tube of the automatic transmission, and press the full automatic operation part 3.
5, first press the setting key 35-1 while checking the displayed value on the set amount display section 45 to inject 1 t of ATF as desired.
Set Qp (5 to 101), then press start key 35
Pressing -2 executes full auto operation. The operation at this time will be explained below based on the chart 70 in FIG.

First, the value set with the setting key 35-1 (the value displayed on the set amount display section 45) is loaded into the memory Qp, and the predetermined initial value (1, 5
~2ffi) (1), and after clearing each memory A-B (2), monitor the weight detector 10 and store the initial weight of the waste oil tank 6 in the memory (3)
), Next, based on this initial weight -2 and the exchange iC, the amount of ATF in the waste oil tank after suction Nl + aC (α is the specific gravity of ATF) is calculated, and if this value becomes more than the predetermined value Mf, it is filled by this suction. When it is detected that the L button state is reached (4), the lamp 50-1 of the abnormality display section 50 is lit, an alarm is output, and the operation is temporarily stopped (5).
? F is in a standby state, and after the ATF in the waste oil tank 6 is discharged manually or by the waste oil discharge operation, when the start key 35-2 is pressed again (6), step (2) is performed.
), the suction operation is restarted.

On the other hand, if it is confirmed in step (4) that the tank is not full, the motor 16 is turned on and the solenoid valve 13 is turned on.
Open the valve and start suction operation ()).

Along with the suction operation, the current weight -1 of the waste oil tank 6 is detected from ff1fi detection i+sto8), and the weight 1 change change I
Tweet flow rate Q based on M+ (Q = (w +-11+
) / a + A: a is the specific gravity of ATF), and use this method! lQ is displayed on the suction/injection iii display section 46 (9), and if the initial flow rate Q at the start of suction does not reach the predetermined value a (10), when a certain period of time T1 has elapsed (11
), the motor 16 is stopped, the solenoid valve 13 is turned off (12), and the lamp 50-3 of the abnormality display section 5G is turned on to issue an alarm. Output and interrupt the operation (13).

In this way, the suction operation progresses, and the flow rate Q changes to the reference exchange amount C.
(14), the motor 16 is stopped and the solenoid valve 13
is closed to complete the first suction operation (15).

Also, before Q is less than the standard exchange amount C, the amount of change Q-Q,
(Q, refer to the previous measured flow rate step (18)) becomes less than a certain amount (16), and when this happens once in a row (17), it is determined that there is no more ATF to be extracted, and the process moves to step (15). to complete one suction operation.

After this, the reference exchange amount C is corrected based on the sucked ATF flow rate Q, and further, this exchange amount C and the above-mentioned Precera) lt
The required number of exchanges N is calculated based on Qp, and this is displayed on the exchange number display section 47 (19).

The standard exchange amount C set here is %Q<C≦Q0d(d
is set as a constant: 0.5 to 11), and based on this, in step (19), the exchange amount for each time is set as shown in the example shown in Table 1 below. is 71 and the suction jlQ of the mouth is 1.
51, and the reason why the injection amount was set higher than the first suction amount was to increase the ATF to the extent that it does not affect the automatic transmission, and to improve the efficiency of the second and subsequent replacements. This is to improve the performance.

Example of setting the amount of exchange each time (Qp = 7/) Number of times Suction amount Injection amount 1 1.51 2.21 2 2.2 2.2 3 2.2 1.5 4 1.1 1.1 Next, set as follows Transfer the exchanged amount to C2
0), and further stores the initial weight of the new oil tank 7 from the weight detector 11 in the memory H2 (21), this initial type fJ,'
142 ATFfill, -aC of the new oil tank after injection with JJ is determined, and this value is set to the specified value 111
When it is detected that the new oil tank 7 will be empty after this injection (22), the operation is temporarily stopped (23) in the same way as in step (5). After replacing the oil tank 7 with one containing another ATF or refilling the new oil, press the start key 35-2.
All you have to do is restart it (24).

On the other hand, when it is confirmed in step (22) that the new oil tank is not empty, the motor 16 is reversed, the solenoid valve 14 is opened, and the injection operation is started (25).

With the start of injection, the current 1■2 of the new oil tank 7 is detected from the weight detection all26), and the flow IQ (Q = (kli-my)/' +
B) Find this flow RQ and the total amount TQ + Q
(TQ is a memory for storing the total amount) are displayed on the suction/injection amount display n46 and the total amount display section 48, respectively (27), while the flow IQ is below the predetermined value a (
28), when a certain period of time T has elapsed (29), the injection is interrupted in the same way as steps (11) to (13) (3G).
)(31).

In this way, the injection operation progresses, and when the flow ILQ reaches the exchange 1c (32), the flow iQ is added to the memory TQ of -tal amount, and the motor 16 is stopped and the solenoid valve 14 is closed to finish the injection (33). ), start the idling timer T^ (34) leave the engine running for a certain period of time T^ (1 to 2 minutes) (35), then subtract the display on the replacement frequency display section 47. and step (
Substitute the exchange amount (suction amount) obtained in 19) into C (36)
, repeat the exchange operation from step (2).

The work progresses in this way, and the total lT in the injection operation is
When Q+Q reaches precera)itQp (37), the injection operation is stopped (38) and 7 alarms are output (39), and the series of operations ends.

Discharge: Set the nozzle 3 to the automatic transmission, and press the manual operation part 3.
When the key is pressed at 3, a manual operation is executed.

When the suction key 33-1 is pressed, the motor 16 is driven to rotate normally, the solenoid valve 13 is opened, and a suction operation is executed. This suction operation is stopped when the suction amount reaches the amount set by the preset key 38 before the key 33-1 is pressed, when the end of suction is detected, or when the stop key 40 is pressed.

When the injection key 33-2 is pressed, the motor 16 is reversed, the solenoid valve 14 is opened, and an injection operation is executed. This injection operation is stopped when the injection amount reaches the amount set by the preset key 38 or when the stop key 40 is pressed.

According to this embodiment configured as described above, in full automatic operation, the replacement is performed in parts according to the preset setting amount, and the exchange is performed continuously according to the set amount while the engine is running. can be exchanged. Also, before each replacement, check to see if the operation will be interrupted by filling up the waste oil tank or emptying the new oil tank, and if any interruption is expected. The operation can be resumed after the expected interruption is resolved by discharging waste oil, replenishing new oil, etc.

1. Effects of the Invention The present invention is configured as described above, and the set amount can be exchanged continuously while the engine is running, and the work can be carried out without the need for an operator to attend. In addition, if the replacement operation is expected to be interrupted due to the ATF in the waste oil tank or new oil tank, stop the replacement operation at that time and allow the automatic transmission to operate for a long time without the ATF reaching the specified amount. It protects you from being exposed to damage, so you can work safely.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram of an embodiment of the present invention in use. FIG. 2 is an explanatory diagram of the configuration of the same embodiment. FIG. 3 is an enlarged explanatory view of the main parts of the same embodiment. FIG. 4 is a flowchart showing the program operation of the embodiment. 1 is the ATF exchange device main body, 3 is a nozzle, 6 is a waste oil tank, 7 is a new oil tank, 10 is a weight detector which is a means for detecting the amount of waste oil, 11 is a weight detector which is a means for detecting the amount of new oil, 12 is a pump, 13・14 is a solenoid valve, 20 is a control unit, 21 is a production panel, 30 is a keyboard, 32 to 50 are an alarm output unit and an abnormality display unit which are notification means, ■ is a car, AT
is automatic transmission, F is filler tube, and 0 is oil pan.

Claims (1)

[Claims] This type of ATF replacement device is equipped with a nozzle that can be inserted into the filler tube of a car's automatic transmission, and the nozzle is inserted from the filler tube into the oil pan of the automatic transmission to suck in and inject old ATF. A waste oil amount detection means for detecting the amount of ATF in a waste oil tank that stores old ATF, a new oil amount detection means that detects the amount of ATF in a new oil tank that stores new ATF to be injected, and a preset that presets the amount of ATF to be replaced. means, and a waste oil tank that continuously exchanges the amount that can be replaced at one time in a plurality of times according to the exchange amount set by the preset means, and that is supplied by both the detection means before each exchange. The amount of ATF in the new oil tank and the new oil tank is checked, and if it is detected that either the waste oil tank is full or the new oil tank is empty due to suction or injection at that time, the system stops the replacement operation for that time. 1. An ATF exchange device comprising: means for controlling the operation of a notification means such as a lamp, an alarm, etc.