JPS63318395A - Torque converter oil exchanger - Google Patents

Abstract

PURPOSE:To prevent the mixing of old oil with fresh oil in oil exchange by providing a weight type measuring device for measuring old oil and a weight type measuring device for measuring fresh oil. CONSTITUTION:An oil discharge container 2 is accommodated into a case 1 as oil taking-out means, and a load cell 8 as a weight type measuring device for measuring the taking-out quantity is arranged under the oil discharge device 2. A fresh oil container 9 is arranged as oil feeding means, in parallel to the discharge oil container 2 in the case 1, and a load cell 13 as the weight type measuring device for measuring the fresh oil feed quantity is arranged under the fresh oil container 9, too. Since the fresh oil feed quantity is measured through the variation of the oil weight in the frest oil container 9, mixing of old oil with the fresh supplied oil is prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an apparatus for changing oil in a torque converter of an automobile, which is installed, for example, at a gasoline filling station where automobiles and the like are refueled with gasoline.

[Conventional technology]

In addition to gasoline refueling operations, such gasoline filling stations also provide
The company provides service services such as various oil changes and tire air filling, but among these services, the applicant first developed an automobile service device that also changed torque converter oil in Japanese Patent Laid-Open No. 60
Publication No. 104441 (Japanese Patent Application No. 58-211494)
We proposed the following.

This automotive service equipment performs services such as replacing engine oil, torque converter oil, brake oil, and refrigerant gas for air conditioners and coolers, inspecting tire air, radiator caps, air filters, and batteries. However, when replacing the torque converter oil, insert the extraction nozzle into the oil pan of the torque converter, measure the amount extracted with a meter, collect the extracted oil in a vacuum tank, and then , new oil in the oil container is filled into the oil pan while being measured by a flow meter in an amount equal to the amount taken out.

(Problems to be Solved by the Invention) In the oil changing means, the measuring device for measuring the amount of oil that has been extracted and the measuring device for measuring the amount of new oil to be put into the oil pan are wetted type. , and because it is shared by one instrument, immediately after measuring the old oil, new oil is measured with the same measuring instrument, and this new oil contains the previous measured oil that remains on the measuring instrument. The disadvantage is that old oil may get mixed in.

In addition, since the oil change is usually performed three or four times to replace all the oil in the torque converter, the old oil is mixed into the new oil each time, which is not desirable in terms of accuracy.

SUMMARY OF THE INVENTION An object of the present invention is to provide a torque converter oil exchange device that eliminates the disadvantages of the conventional example and can supply only new oil without mixing old oil into new oil when replacing old and new oil. There is a particular thing.

[Means for solving problems]

In order to achieve the above object, the present invention has an oil extraction pipe connected to a waste oil container via a extraction pump, an oil supply pipe connected to a new oil container via a supply pump, and a gravimetric system for measuring the amount of oil to be extracted and the amount of supply. The gist of the present invention is to provide a measuring device and a control means for controlling the amount of oil supplied in accordance with the amount of oil extracted.

[Effect]

According to the present invention, there is provided a measuring device for measuring the amount of old oil drained from an oil pan of an automobile using a skin pipe, and a measuring device for measuring the amount of new oil supplied from a new oil container to the oil pan through a supply pipe. The vessel is based on the weight type, so
There is no risk of old oil mixing with new oil when changing oil. Also, since it is a weight type, even if both are used together, the oils will not mix.

〔Example〕

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

FIG. 1 is a longitudinal sectional front view showing an embodiment of the torque converter oil changing device of the present invention. First, a drain oil container 2 is housed in a case 1 as an oil extraction means, and a nozzle 3 is attached to the tip of the drain oil container 2. New oil sensor 4, valve 5, extraction pump 6 are installed on the way.
The other end of the oil drain pipe 7 provided with the above was opened. 8 in the figure is
A load cell is shown as a gravimetric measuring device for measuring the amount to be extracted, and the waste oil container 2 is placed on this load cell 8.

As an oil supply means, a new oil container 9 is disposed in the case 1 side by side with the drain oil container 2, and an oil supply pipe 10 is provided.
One end was connected to the nozzle 3, the other end communicated with the new oil container 9, and a valve 11 and a supply pump 12 were provided in the middle.

Similarly to the drained oil container 2, a load cell 13 is disposed below the new oil container 9 as a gravimetric measuring device for measuring the amount of fresh oil supplied.

In the case 1 in which the oil extraction means and the oil supply means are disposed in this manner, a control means using a conventionally known microcomputer or the like is provided as a control means for controlling the drive of the supply pump 12 according to the amount of oil to be extracted. device 14
will be established.

In the figure, 15 is a display that displays the amount of oil to be replaced, 16 is an alarm such as a speaker that notifies instructions for oil change operations, etc., 17 is a start switch that starts the oil change device, and 18 is an oil change in progress. This figure shows an engine drive detector that uses a plug ignition current detector to detect the engine drive of an automobile.

As shown in the block diagram of FIG. 2, the control device 14 includes an input/output device (Ilo) 19, a central processing unit (CPU) 20, a storage device (RAM) 21, a storage device (ROM) 22, as is well known in the art. It consists of a clock circuit 23, a start switch 17, an engine drive detector 18, load cells 8, 13, a new oil sensor 4, a valve 11, and a supply pump 12.
The output signal from the control device 1 is introduced into the control device 14.
Control signals from 4 were introduced to valves 5 and 11, a sampling pump 6, a supply pump 12, an indicator 15, and an alarm 16, respectively.

Next, the usage and operation will be explained according to the flowchart in FIG. 3. To replace the oil in the torque converter of a car, first insert the nozzle 3 into the torque converter oil gauge hole of the car,
into the plug cable and press the start switch 17 (step-on).

The on signal from the start switch 17 is transmitted to the control device 14.
The control device 14 drives the extraction pump 6, opens the valve 5 (stesopro), and the oil extracted from the oil pan passes through the nozzle 3 and the oil extraction pipe 7 and enters the drain oil container 2. . During this time, the load cell 8 installed in the drain oil container 2
Then, measure the amount of oil removed, and as shown in tc in Figure 4, the weight increase rate measured here becomes constant (step c), and when the nozzle 3 starts sucking air, the oil is removed. Assuming that this has been completed, the extraction pump 6 is stopped and the valve 5 is closed. At this time, the extraction amount W1 is measured by the load cell 8 and stored in the control device 4. Also, during this oil extraction, the new oil sensor 4 detects that the oil that has been extracted is not new (stellar pull).

Next, the new oil supply pump 12 is driven and the valve 11 is opened (step 2), and new oil is supplied from the new oil container 9 to the oil pan through the oil supply pipe 10 and nozzle 3, and the amount of supply during this period is is measured by the load cell 13.

In this case, since the amount of new oil supplied is measured based on the change in the weight of the oil in the new oil container 9, there is no possibility that old oil will mix with the newly supplied oil.

Furthermore, since it is a gravimetric scale, even if air is sucked in, there will be no measurement error.

In addition, since both the oil extraction pipe 7 and the oil supply pipe 10 are connected to the nozzle 3, only one nozzle is required, and it can be smoothly inserted into a small gauge hole.

Then, the sampling amount W1 stored in the control device 14,
When the current supply amount W2 becomes equal (step E), the control device stops the supply pump 12, closes the valve 11, and ends the oil supply.

When the filling operation is completed, the alarm 16 will indicate “Turn the engine on.
Please drive for a minute. " message appears (go to step), and when you start the engine according to this message, the new torque converter oil supplied in the oil pan will enter the torque converter, and the old oil in the torque converter will flow out into the oil pan instead. do. The engine drive during this time is detected by the engine drive detector 18 (stepped).
When one minute, which is the time T set in advance in the control device 14, has elapsed (STEP CH), a message saying "Please stop the engine" is sent from the alarm 16 (STEP CHART), and the engine stops according to this message. stop.

Then, when the engine drive detector 18 detects that the engine has stopped (Step Nu), the extraction pump 6 is driven again and the valve 5 is opened again (Step Port), and the old oil in the oil pan is drained as before. New oil is supplied in an amount equal to the amount that has been removed, and the old and new oil are exchanged by driving the engine (to step ~).

After repeating this replacement process 3 to 4 times, the oil that has been removed will no longer be old, but new, and the new oil sensor 4 will determine that it is new oil based on the transparency of the oil. Finally, the supply pump 12 is driven, the valve 11 is opened (step port), new oil is supplied, and the current extraction amount W1 becomes equal to the new oil supply amount W2 (step port). 16, a message saying "Replacement has been completed" will be sent (step force), informing you that all the oil in the torque converter has been replaced.

Further, the replacement amount is displayed on the display 15.

Then, the nozzle 3 is removed from the gauge hole, the engine drive detector 18 is removed from the plug cable, and the oil change operation is completed.

To perform the above-mentioned replacement work, first insert the nozzle 3 into the car's gauge hole, press the start switch 17, and then stop the engine from the driver's seat according to the message from the alarm 16. Torque converter oil can be replaced.

In addition, load cell 8 for draining oil and load cell 13 for new oil
may be shared by one load cell.

〔Effect of the invention〕

As described above, the torque converter oil changing device of the present invention has the following features:
Since we used a weight-type meter, there is no risk of old oil getting mixed into the new oil supplied during oil changes.
It can supply pure new oil.

[Brief explanation of the drawing]

Fig. 1 is a longitudinal sectional front view showing the actual male side of the torque converter oil changing device of the present invention, Fig. 2 is a block diagram of the same as above, Fig. 3 is a flow chart showing the operation, and Fig. 4 is a characteristic curve diagram showing the weight increase rate. be. 1... Case 2... New oil container 3... Nozzle 4... New oil sensor 5... Valve
6...Extraction pump 7...Oil extraction pipe 8...
Load cell 9...New oil container 10...Oil supply pipe 11...Valve 12...Supply pump 1
3...Load cell 14...Control device 15...
Indicator 16...Alarm Ward 1□00.8 months F. 1811, F27□Motion detector
Mukuro 19... Input/output device (I 10) 20... Central processing unit (CPU) 21... Storage device (RAM) 22... Storage device (ROM) 23... Clock circuit applicant stock Company Tokyo Tatsuno Figure 3 Figure 4 Lock (King) →

Claims (1)

[Claims] An oil extraction pipe connected to a drain oil container via a extraction pump, an oil supply pipe connected to a new oil container via a supply pump, a gravimetric measuring device to measure the amount of oil to be extracted and the amount of oil to be supplied, and a 1. A torque converter oil exchange device comprising a control means for controlling an oil supply amount.