JP3088934B2 - ATF switching equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is mainly used in a gas station or a maintenance shop, and is used in an automotive torque converter.
The present invention relates to an ATF exchange device for exchanging TFs.

[0002]

2. Description of the Related Art Conventionally, an ATF in a torque converter has been used.
To replace the ATF, all ATFs must be
It was difficult to extract the oil all at once, so first extract only the waste oil in the torque converter (actually a part of the waste oil), then inject new oil based on the amount of oil removed, and set the engine to idle. In general, the operation of stirring and diluting the waste oil remaining in the torque converter and the injected new oil with the pump of the torque converter is repeated several times, and the waste oil in the torque converter is gradually diluted with the new oil. However, at this time, before starting the replacement work, if the total amount of new oil to be injected in a plurality of times is set in advance, the control unit will calculate the amount of new oil from the set value and the amount of waste oil withdrawn each time. It was determined whether to perform the replacement operation one time, and the subsequent work was automatically advanced.

[0003]

However, in such a system, the AT in the torque converter depends on the vehicle type.
If the amount of F was different and the total amount of new oil to be injected was set uniformly, the exchange rate would vary.

[0004] In the conventional method, after the replacement work is completed,
The only way to confirm how clean the ATF was was by visual inspection, and only an ambiguous confirmation could be made, which was insufficient to convince the car owner.

[0005] The present invention provides an A which can solve the above problems.
An object is to provide a TF switching device.

[0006]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a nozzle for both sampling and filling, a waste oil tank,
Waste oil measuring means for measuring the amount of waste oil in the waste oil tank, new oil tank, new oil measuring means for measuring new oil in the new oil tank, and draining waste oil in the torque converter to the waste oil tank via the nozzle Sampling means, injection means for injecting the new oil stored in the new oil tank from the nozzle, a waste oil pipe having one end opened to the waste oil tank, and a new oil pipe having one end opened to the new oil tank; Provide the nozzle at the tip,
A common line having a rear end connected to the other end of the waste oil line and the other end of the new oil line via the extraction means and the injection means on the way. The ATF capacity of the torque converter for each vehicle in an ATF exchange apparatus that performs a dilution exchange operation of extracting a predetermined amount of waste oil from the torque converter and injecting a predetermined amount of new oil into the torque converter a plurality of times at predetermined time intervals. , An exchange rate setting means for finally setting a target exchange rate at which the waste oil and the new oil are exchanged, and an ATF capacity set by the ATF capacity setting means and a waste oil removal amount for each exchange operation. The exchange rate for each exchange operation is calculated based on the exchange rate, and the exchange rate set by the exchange rate setting means is compared with the exchange rate for each exchange operation to determine whether to continue the subsequent exchange operation. Control means for performing And ATF changer or sampling Injection dual nozzle, characterized in that it and a waste oil tank,
Waste oil measuring means for measuring the amount of waste oil in the waste oil tank, new oil tank, new oil measuring means for measuring new oil in the new oil tank, and draining waste oil in the torque converter to the waste oil tank via the nozzle Suction means, injection means for injecting the new oil stored in the new oil tank from the nozzle, and a waste oil pipe having one end opened to the waste oil tank and the other end connected to the nozzle via the extraction means And a new oil line having one end opened to the new oil tank and the other end connected to the nozzle via the injection means, wherein the waste oil in the torque converter of the vehicle is located while the engine of the vehicle is being driven. Set the ATF capacity of the torque converter for each vehicle in an ATF exchange device that repeats the dilution exchange operation of extracting a fixed amount and injecting a predetermined amount of new oil into the torque converter multiple times at predetermined time intervals. And means that, and the exchange rate setting means that finally set the waste oil and new oil are interchanged target exchange rate,
Based on the ATF capacity set by the ATF capacity setting means and the amount of waste oil withdrawn for each replacement operation, a replacement rate for each replacement operation is calculated, and the replacement rate set by the replacement rate setting means and the The present invention is to provide an ATF exchange apparatus characterized by comprising: control means for comparing the exchange rate with each exchange and determining whether or not to continue the subsequent exchange operation. .

[0007]

According to the present invention, in an ATF exchanging device for alternately extracting waste oil and injecting new oil a plurality of times, the ATF capacity of the torque converter and the amount of extracted waste oil are set based on the ATF capacity.
The TF exchange rate is calculated each time, and it is determined from the obtained exchange rate whether to continue withdrawing waste oil and injecting new oil. Since there is no need to replace the ATF, the ATF replacement can be performed uniformly and accurately, not only can the labor of the operator be greatly reduced, but also the replacement work that can be fully understood by the owner of the car. Becomes

[0008]

An embodiment of the present invention will be described below in detail with reference to the drawings.

FIG. 1 is an overall configuration diagram of an ATF changing apparatus according to one embodiment of the present invention. A waste oil tank 2 for storing extracted waste oil in a main body 1 and a waste oil load cell as waste oil measuring means for measuring the waste oil tank 2 are shown. 3, a new oil tank 4 for storing the new oil to be injected, and a new oil load cell 5 serving as a new oil measuring means for measuring the new oil tank 4.

One end of a waste oil pipe 7 via an electromagnetic valve 6 is opened in the waste oil tank 2, and one end of a new oil pipe 9 via an electromagnetic valve 8 is opened in the new oil tank 4. ing.

The other end of the waste oil line 7 and the other end of the new oil line are connected via a motor pump 10 which is a waste oil extracting means and a new oil injecting means, and which has a common pipe 12 to which a nozzle 11 for both extraction and injection is connected at the end. Connected to the rear end.

Above the main body 1, a waste oil extraction amount indicator 13 for displaying the amount of waste oil extracted for each ATF exchange operation, a new oil injection amount indicator 14 for displaying the amount of new oil injected, and finally an injection. Total new oil injection amount display 1 that shows the total new oil amount
5 and an exchange rate indicator 16 that indicates how much the ATF in the torque converter has been replaced with new oil each time the exchange operation is performed.

Reference numeral 17 denotes an operation section provided on the upper portion of the main body 1 and includes a numeric keypad as a means for setting an exchange rate and an ATF capacity of a torque converter, which will be described later, and switches for performing start and stop and the like. Have been.

Reference numeral 18 denotes control means using a conventionally known microcomputer or the like. As shown in FIG.
7, receives signals from the waste oil load cell 3 and the new oil load cell 5, and outputs operation signals to the solenoid valve 6, the solenoid valve 8, the motor pump 10, and the indicators 13, 14, 15, and 16 based on those signals. Is what you do.

By the way, at present, the method of replacing ATF from the gauge pipe of the torque converter includes a method in which the amount of waste oil extracted and the amount of new oil injected are the same each time in performing the replacement operation a plurality of times. There is a method of adding a predetermined amount to the amount of waste oil extracted at the first time, injecting the same as the first injection amount of new oil, and increasing the amount that can be extracted from the second time to minimize the number of replacements. The ATF capacity A of the torque converter, which has been confirmed in advance in a maintenance notebook, etc. (assumed to be the same as the total waste oil amount A in the torque converter before replacement), and the extraction amount B (In any of the above cases, in the actual replacement work, the withdrawal amount for each time varies somewhat, so the withdrawal amount for each time is represented by B ₁ , B ₂ , B ₃ ,... Bn) and 2
From the two values, set the ATF capacity of the torque converter,
In other words, with respect to the amount of waste oil before replacement, it is calculated as the exchange rate how much waste oil without mixing new oil was extracted each time, regardless of the amount of new oil injected. It is represented.

Assuming that the ATF capacity of the torque converter set and input as defined above is A, and the amount of waste oil extracted at the first time is B ₁ , the amount of waste oil extracted relative to the total amount A of waste oil originally contained in the torque converter ratio of B _1, i.e. the first exchange rate is a left side of equation 1, for convenience, previously temporarily replacing the left side of the equation to the right side of the equation.

[0017]

[Formula 1]

Similarly to the first exchange rate, the second exchange rate is the ratio of the amount of waste oil without mixing new oil extracted up to the second time to the total waste oil amount A originally contained in the torque converter. Can be represented. Here, waste oil amount without contamination of new oil withdrawn until second time, the first sampling volume B ₁ of waste oil, a value obtained by adding the mixed without waste of new oil pulled off the second time In addition, the amount of waste oil that was not mixed with new oil extracted in the second extraction was 1 in the _second extraction B2.
Since it is a value obtained by multiplying the remaining rate of only the amount of waste oil that has not been extracted in the second extraction operation, the second exchange rate is the left side of Equation 2, and if it is replaced with the same equation as the right side of Equation 1, The right side.

[0019]

[Formula 2]

When the third exchange rate is obtained in the same manner as the second exchange rate, the left side of Equation 3 is obtained, and the equation is replaced with the right side.

[0021]

[Equation 3]

Therefore, the exchange rate at the n-th time can be expressed by Equation 4.

[0023]

(Equation 4)

Next, based on the above, based on the flow chart of FIG. 2, the use and operation of the embodiment in the case where the amount of new oil injected each time is the same as the amount of waste oil extraction will be described.

First, the target exchange rate C,
In other words, the degree to which the waste oil and the new oil in the torque converter are to be finally replaced is set (step 1). However, the change rate itself is not likely to be changed so much. After setting the rate, a switch may be provided so that this step can always be passed thereafter. The exchange rate C set and input here is introduced into the control means 18 and stored.

The ATF capacity A of the torque converter of the exchange vehicle, which has been confirmed in advance, is also set by the operation unit 17 (step 2). Then, the capacity A is introduced into the control means 18 and stored in the same manner as the exchange rate.

Next, the engine of the automobile is kept idling, the gauge is pulled out from the gauge pipe of the torque converter, and the nozzle 11 is inserted instead.
Press the start switch in 7 (step 3).

Then, a start signal is input to the control means 18, and the solenoid valve 6 and the motor pump 10
Is output, the solenoid valve 6 is opened, the motor pump 10 rotates forward (drawing direction) (step 4), and the waste oil in the torque converter starts to be drawn.
A weighing signal is introduced from the waste oil load cell 3 to the control means 18, and the waste oil removal amount is sequentially integrated and displayed on the removal amount display 13.

Thereafter, when the waste oil is no longer discharged into the waste oil tank 2, the weight signal sent from the waste oil load cell 3 to the control means 18 stops changing, and the weight W1 of the waste oil in the waste oil tank 2 is kept constant (step S1). 5), the control means 18 determines that the first waste oil removal has been completed.

[0030] Here, the control means 18 already exchange ratio X of the first from the ATF capacity A which stores first waste oil sampling quantity B ₁ Metropolitan calculated using Equation 4 (step 6), exchange rate It is displayed on the display 16 (step 7).

At the same time, the control means 18 sends the electromagnetic valve 6,
An injection control signal for controlling the motor pump 10 and the solenoid valve 8 is output, the solenoid valve 6 is closed, the motor pump 10 rotates in the reverse direction (injection direction), and the solenoid valve 8 is opened (step 8).
The operation shifts from the extraction of the waste oil to the injection of the new oil. A weighing signal is introduced from the new oil load cell 5 to the control means 18 and the injection amount indicator 14
And the total injection amount display 15 are sequentially integrated and displayed.

[0032] Eventually new oil amount W2 to be injected is consistent with waste oil amount B ₁ which was drawn for the first time (step 9), the control unit 18 receives the signal, it is determined that the new oil injection first is finished , The electromagnetic valve 8 and the motor pump 1
0 is output, the solenoid valve 8 closes, the motor pump 10 stops (step 10),
The first replacement operation ends.

At this time, the control means 18 compares the currently calculated exchange rate X with the preset exchange rate C in the current exchange operation (step 11) and determines whether or not to continue the exchange operation. I do.

Here, a description will be given assuming that X has not exceeded C yet, and the operation proceeds to the second replacement operation as it is. Here, new oil once injected into the torque converter and remains in the torque converter. It is necessary to allow time for the waste oil to be sufficiently stirred by the torque converter pump (the engine is still idling and the torque converter pump is also driven), and to be diluted.
Therefore, the control means 18 outputs the pause control signal and starts counting time with the timer.

The time t1 elapses (step 1).
2) If it is determined that the ATF in the torque converter has been sufficiently stirred and diluted, the control unit 18 outputs a second extraction control signal, and thereafter executes all the operations performed in the first exchange operation.

After the exchange operation is repeated several times, when the exchange rate X exceeds the target exchange rate C, the operator is notified by a notification means such as a buzzer that the exchange operation has been completed. Then, the process returns to the initial standby state before the replacement operation.

After all the replacement operations are completed, the operator checks the numerical value displayed on the total filling amount display 15, and adds a price and a labor cost corresponding to the amount of new oil actually injected.
Collect fees from customers.

Although the embodiment in which the common pipeline 12 is provided is shown here, the waste oil pipeline 20 via the extraction means 19 and the new oil pipeline 2 via the injection means 21 as shown in FIG.
It is apparent that the present invention can be similarly implemented in an ATF exchange device having two independent pipelines, and the same operation and effect can be obtained.

[0039]

As described above, according to the present invention, the replacement rate is calculated and the replacement work is automatically terminated. Therefore, the present invention can be applied to any type of torque converter and is not a vague confirmation by visual inspection. , Accurate replacement work,
This will increase customer trust and lead to an increase in customer attraction rates.

Further, since the replacement rate is determined without providing an additional component such as a sensor for detecting the degree of contamination of the ATF, the frequency of failures can be reduced by that amount, and the rise in product price can be suppressed. More reliable products can be provided to users at low cost.

[Brief description of the drawings]

FIG. 1 is an overall configuration diagram of an ATF exchange device according to an embodiment of the present invention.

FIG. 2 is a flowchart showing an operation of the apparatus.

FIG. 3 is an overall configuration diagram of an ATF exchange device according to another embodiment of the present invention.

[Explanation of symbols]

 2 Waste Oil Tank 3 Waste Oil Measuring Means 4 New Oil Tank 5 New Oil Measuring Means 7 Waste Oil Pipeline 9 New Oil Pipeline 10 Extraction / Injection Means 11 Both Extraction / Injection Nozzle 12 Common Pipeline 17 Operation Unit 18 Control Means 19 Extraction Means 20 Waste Oil Pipe 21 Injection means 22 New oil pipe

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-2-191196 (JP, A) JP-A-4-128189 (JP, A) JP-A-64-45293 (JP, A) (58) Field (Int.Cl. ⁷ , DB name) B67D 5/04

Claims (2)

(57) [Claims] A waste oil tank; a waste oil tank; a waste oil measuring means for measuring a waste oil amount in the waste oil tank;
A new oil tank, a new oil measuring means for measuring the new oil in the new oil tank, a sampling means for extracting waste oil in the torque converter to the waste oil tank through the nozzle, and a new oil stored in the new oil tank. An injection means for injecting from the nozzle, a waste oil pipe having one end opened to the waste oil tank, a new oil pipe having one end opened to the new oil tank, and the nozzle provided at a tip, and the extraction means and the injection means are provided halfway. And a common line having a rear end connected to the other end of the waste oil line and the other end of the new oil line, so that the waste oil in the torque converter of the vehicle can be stored while the engine of the vehicle is running. An ATF changing device for repeatedly performing a plurality of times at predetermined time intervals of a dilution exchange operation of extracting a fixed amount and injecting a predetermined amount of new oil into the torque converter; and a means for setting an ATF capacity of the torque converter for each vehicle; An exchange rate setting means for setting a target exchange rate at which waste oil and new oil are finally exchanged, and one exchange operation based on the ATF capacity set by the ATF capacity setting means and the amount of waste oil withdrawal for each exchange operation. Control means for calculating an exchange rate for each of the exchange rates, comparing the exchange rate set by the exchange rate setting means with the exchange rate for each time, and determining whether or not to continue the subsequent exchange operation. An ATF exchange device comprising: 2. A sampling and filling nozzle, a waste oil tank, and waste oil measuring means for measuring a waste oil amount in the waste oil tank;
A new oil tank, a new oil measuring means for measuring the new oil in the new oil tank, a sampling means for extracting waste oil in the torque converter to the waste oil tank through the nozzle, and a new oil stored in the new oil tank. An injection means for injecting from the nozzle, one end opened to the waste oil tank, and another end connected to the nozzle via the extraction means, a waste oil pipe, and one end opened to the new oil tank, A new oil pipeline having the other end connected to the nozzle via a means, wherein a predetermined amount of waste oil in a vehicle torque converter is extracted and a predetermined amount of new oil is injected into the torque converter during engine driving of the vehicle. Means for setting an ATF capacity of a torque converter for each vehicle, and a target for finally replacing waste oil and new oil in an ATF exchange apparatus which repeatedly performs a dilution exchange operation at predetermined time intervals. An exchange rate setting means for setting an exchange rate; and an exchange rate for each exchange operation calculated based on the ATF capacity set by the ATF capacity setting means and a waste oil removal amount for each exchange operation. An ATF switching device comprising: a control unit that compares the exchange rate set by the rate setting unit with the exchange ratio for each time, and determines whether or not to continue the subsequent exchange operation. .