JPH0710193A - Engine oil recovery device - Google Patents

Abstract

(57) [Summary] [Purpose] To improve the recovery efficiency and shorten the recovery time of waste oil and cleaning oil even when the temperature of the waste oil and cleaning oil to be recovered is low and the viscosity is high. [Structure] The recovery conduit 11 and the air supply conduit 28 in the main body 1
And a recovery pump 16 are provided in the middle of the recovery pipeline 11.
Compressors 26 are provided in the middle of the air supply pipelines 28, respectively, and compressed air is supplied into the engine from an air supply nozzle 30 connected to the air supply pipelines 28 via an air supply hose 29, and a recovery pipeline. The engine oil in the engine is recovered by the recovery nozzle 13 connected to the recovery oil 11 via the recovery hose 12, and the waste oil storage tank 2
Store engine oil in.

Description

Detailed Description of the Invention

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an engine oil recovery device provided in an engine oil exchanger, and more particularly to an engine oil recovery device configured to efficiently recover engine oil even in cold weather.

[0002]

2. Description of the Related Art Conventionally, at a gas station or the like, fuel such as gasoline is supplied and engine oil for vehicles is also replaced. Therefore, the deteriorated engine oil (waste oil) in the engine is collected, An engine oil changer is installed to supply new engine oil (new oil). As an example of this engine oil exchanger, it has a new oil storage tank, a waste oil storage tank, a cleaning oil storage tank in its body, and after collecting the waste oil from the oil pan of the engine, supplies the cleaning oil to the oil pan, The engine is warmed up to clean the inside of the engine and the oil pan, and then the used cleaning oil is collected to supply the oil pan with an amount of new oil corresponding to the engine model.

When the engine oil changer is used to change the oil, the worker first inserts the recovery nozzle, which is connected to the waste oil storage tank via the recovery pump, into the oil pan from the oil level gauge insertion port of the engine body. , Turn on the switch for waste oil recovery. With this, the recovery pump is driven, and the waste oil in the oil pan is recovered in the waste oil storage tank via the recovery nozzle (waste oil recovery work).

Next, the switch for supplying the cleaning oil is turned on to switch the connection of the recovery nozzle from the waste oil storage tank to the cleaning oil storage tank, drive the cleaning oil supply pump, and transfer the cleaning oil through the recovery nozzle. Supply to the oil pan (cleaning oil supply work). Then, after a predetermined amount of cleaning oil is supplied, the engine is started to perform cleaning (flushing) with the cleaning oil.

After the cleaning, the recovery nozzle is switched from the cleaning oil storage tank to the waste oil storage tank again to recover the cleaning oil used for the cleaning from the oil pan to the waste oil storage tank (cleaning oil recovery work). After this, the worker inserts the new oil nozzle connected to the new oil storage tank via the new oil supply pump into the new oil supply port at the top of the engine body, and turns on the switch for supplying new oil. Then, the new oil supply pump is driven to supply the new oil from the new oil storage tank to the oil pan (new oil supply work).

[0006]

By the way, since it is required to change oil at a gas station in a short time,
When performing the above waste oil recovery work with the engine oil exchanger, warm the engine of the vehicle for several minutes before the work, circulate the oil in the engine, warm the oil in the oil pan, and reduce the viscosity of the oil. However, the suction efficiency of the recovery pump is increased. However, depending on the cold season or the engine being stopped for a long time, the temperature of the engine oil is low and the viscosity of the oil is extremely high, and the engine oil cannot be warmed up even after warming up for several minutes. However, if you warm up the engine for a long time,
Since this leads to a longer working time, it may be unavoidable that waste oil recovery work will be started. Even when collecting the cleaning oil, the warm-up time of the engine for cleaning is several minutes, so the cleaning oil in the engine will not be warmed up and the recovery will start when the oil viscosity is high. To do.
In the above cases, since the viscosity of the oil to be collected is high, the suction efficiency of the collection pump is reduced and the time for collecting the waste oil or the cleaning oil is increased.

Further, since the waste oil and the cleaning oil are collected after the warm-up operation of the engine is stopped, before the waste oil is collected, the waste oil adheres to the passage communicating from the cam chamber at the upper part of the engine to the oil pan at the lower part. There is. It takes time for the attached waste oil to drop to the oil pan, and this drop of waste oil may not be completed within the waste oil recovery time. Is causing the change.

An object of the present invention is to improve the recovery efficiency of waste oil and cleaning oil and shorten the recovery time of the waste oil and cleaning oil even when the temperatures of the waste oil and cleaning oil to be recovered are low and the viscosity is high. Is to provide.

[0009]

In order to solve the above problems, the present invention provides an engine oil recovery device for recovering engine oil inside an engine to a recovery storage tank outside the engine, from an oil level gauge insertion port of the engine. The engine oil recovery nozzle, which is inserted into the engine and is airtightly attached to the oil level gauge insertion port and closes the oil level gauge insertion port, is connected to the engine oil recovery nozzle via the suction pipe line. A suction means for sucking the engine oil, an air supply nozzle that is airtightly attached to a new oil supply port of the engine and that closes the new oil supply port, and the air supply nozzle connected through an air supply pipe, Air supply means for supplying air to
A control means for driving both the suction means and the air supply means at the time of collecting the engine oil is provided.

[0010]

By operating the air supply means for supplying air and sending air from the new oil supply port of the engine, at the same time, by driving the suction means to suck the engine oil,
The engine oil adhering to the passage communicating from the new oil supply port on the upper part of the engine to the oil pan on the lower part quickly drops into the oil pan due to the flow of the supplied air, and the internal pressure inside the engine also rises, and the engine oil is removed. The suction efficiency of the suction means for sucking is improved.

[0011]

Embodiments of the present invention will be described with reference to FIGS. FIG. 1 is an overall configuration diagram, and FIG. 2 is a circuit configuration diagram. In an engine oil exchanger main body 1 (hereinafter referred to as main body 1), a waste oil storage tank 2 for storing recovered waste oil and a flushing operation are provided. A cleaning oil storage tank 3 for storing the cleaning oil to be used and a new oil storage tank 4 for storing new oil to be supplied to the engine of the vehicle are built in. Below the storage tanks 2, 3 and 4, load cells 5, 6 and 7 for measuring the amount of liquid in the tank by weight change are provided and are electrically connected to a control device 32 described later.

One end of a waste oil recovery pipeline 8 is connected to the waste oil storage tank 2, and the other end of the waste oil recovery pipeline 8 is
It is connected to the outlet 9a of the switching valve 9 having the outlet 9a, the inlet 9b, and the inlet 9c. One end of a cleaning oil supply pipeline 10 is connected to the cleaning oil storage tank 3, and the other end of the cleaning oil supply pipeline 10 is connected to an inlet 9 of a switching valve 9.
connected to b. One end of the common conduit 11 is connected to the inflow / outflow port 9c of the switching valve 9, and the other end of the common conduit 11 is connected to the base end of the recovery hose 12 exposed to the outside of the main body 1. A recovery nozzle 13 is provided at the tip of the recovery hose 12 for recovering waste oil or cleaning oil in the oil pan and supplying cleaning oil to the oil pan. The recovery nozzle 13 is composed of a nozzle body 14 and a flexible resin-made small-diameter tube 15. The tube 15 is inserted through an oil level gauge insertion port of the engine to an oil pan inside the engine to obtain an oil level. It is designed to be airtightly attached to the gauge insertion port.
The switching valve 9 connects the common pipe line 11 and the waste oil recovery pipe line 8 when collecting the waste oil or the cleaning oil, and connects the common pipe line 11 and the cleaning oil supply pipe line 10 when supplying the cleaning oil. At times, the common pipe line 11 and the cleaning oil supply pipe line 10 communicate with each other.

A recovery pump 16 is provided in the middle of the common conduit 11, and the recovery pump 16 is started by a recovery pump motor 17 provided near the recovery pump 16. In the case of the present embodiment, as described above, the recovery nozzle 13 is adapted to supply the cleaning oil in addition to the recovery of the waste oil or the cleaning oil. The forward and reverse discharge is possible. The recovery pump motor 17 is normally or reversely rotated by a recovery pump motor start signal from the control device 32 described later.

A strainer 18 is provided between the recovery pump 16 and the recovery hose 12 to remove iron powder, dust, and the like that are collected together with the waste oil. The strainer 18 is used to collect the waste oil or the cleaning oil. Are not returned to the oil pan when the cleaning oil is supplied. A negative pressure switch 19 is provided between the strainer 18 and the recovery pump 16 to determine whether or not the waste oil or the cleaning oil passes through the common pipe line 11 when the waste oil or the cleaning oil is recovered by a pressure change. The negative pressure switch 19
When the waste oil or the cleaning oil has not passed through the common pipe line 11, it determines that the recovery is completed and outputs a recovery end signal to the control device 32 described later.

One end of a new oil supply pipeline 20 is connected to the new oil storage tank 4, and the other end of the new oil supply pipeline 20 is connected to
A base end of a fresh oil supply hose 21 exposed to the outside of the main body 1 is connected. A new oil supply nozzle 22 is provided at the tip of the new oil supply hose 21, and the new oil supply nozzle 22 is
The built-in normally closed valve is opened by operating the lever 23 so that new oil can be supplied. A new oil supply pump 24 is provided in the middle of the new oil supply pipe 20, and the new oil supply pump 24 is started by a new oil supply pump motor 25 provided near the new oil supply pump 24. The new oil supply pump motor 25 is rotationally activated by a new oil supply pump motor activation signal from the control device 32 described later.

A compressor 26 for compressing air is provided in the main body 1 as an air supply means in the present embodiment, and one end of an intake pipe line 27 for introducing the atmosphere is connected to a suction side of the compressor 26. The intake line 2
The other end of 7 is open to the atmosphere. Further, one end of an air supply conduit 28 for circulating compressed air is connected to the discharge side of the compressor 26, and the other end of the air supply conduit 28 is connected to an air supply hose 29 exposed to the outside of the main body 1. The base ends are connected. At the tip of the air supply hose 29, an air supply nozzle 30 that can be airtightly attached to an oil filling port located at the top of the engine is provided. The air supply nozzle 30 is an air compressed by the compressor 26. Is supplied to the oil pan inside the engine. Air supply line 2
A pressure sensor 31 is disposed in the middle of 8 to measure the pressure of the compressed air, and the pressure is set to a predetermined pressure P1 which is predetermined.
When it is higher, an air supply stop signal is output to the control device 32 described later.

A control device 32 is provided in the main body 1, and the control device 32 includes a CPU 3 as shown in FIG.
3, a RAM 34, a ROM 35, a timer 36, and an I / O port 37 which is an input / output control circuit, and controls according to a program as shown in FIGS. 4 to 8 stored in the ROM 35.

On the outer surface of the main body 1, there is provided a keyboard 38 as shown in FIG. 3 for setting what kind of oil changing work is to be performed and the amount of new oil to be supplied. On the keyboard 38, a setting key 39 for inputting various settings, a course table 40 displaying a course of oil change work, a message screen 41 made of a liquid crystal display panel or the like and displaying a message for setting. And are provided.

Also, on the upper part of the outer surface of the main body, a display 4 is provided.
2 is provided, and the display unit 42 has a recovery amount display unit 43 for displaying the recovery amount of waste oil or cleaning oil, a supply amount display unit 44 for displaying the supply amount of new oil or cleaning oil, and the compressor. An air supply state lamp 45 that displays whether or not 26 is activated by lighting is provided.

The configuration of the engine oil exchanger having the engine oil recovery device according to this embodiment is as described above. Next, the operation will be described with reference to the flow charts shown in FIGS. 4 to 8.

FIG. 4 is a flow chart showing the entire oil change work using the engine oil changer of this embodiment. First, the worker performs the waste oil pre-recovery work of S1. Before the waste oil recovery work, an operator holds the nozzle body 14 of the recovery nozzle 13 by hand and inserts the tube 15 into the oil level gauge insertion port of the engine until the tip of the tube 15 contacts the bottom of the oil pan. , The collection nozzle 13 is mounted airtightly. Then, the air supply nozzle 30 is airtightly attached to the oil filling port located at the upper part of the engine.

Next, as S2, the operator operates the keyboard 3
8 is operated to set the course of oil exchange work and the desired new oil supply amount and cleaning oil supply amount, and then the start key in the numeric keyboard 38 is pressed. By this, it moves to S3.
At this time, the set course, the new oil supply amount, and the cleaning oil supply amount are stored in the RAM of the control device 32 as work data.
It is stored in 33. In S3, it is read from the work data stored in the RAM 33 whether or not the waste oil recovery process is to be performed. If the waste oil recovery process is to be performed, the process proceeds to S4, and the waste oil recovery process shown in FIG. If no processing is to be performed, the process proceeds to S5.

In S5, whether the flushing process is to be performed or not is read from the work data. If the above flushing process is not to be performed, new oil is supplied as it is, so that S9 is performed.
Move on to. When performing the flushing process, the process proceeds to S6, and the cleaning oil supply process as shown in FIG. 6 is performed. When the process of S6 is completed, the worker performs flushing work as S7. In the flushing work, the recovery nozzle 13 and the air supply nozzle 30 are once removed from the engine, the engine is returned to a operable state, the engine is warmed up for several minutes, and the cleaning oil is circulated in the engine to Wipe off the attached waste oil and dirt with cleaning oil. After a few minutes, stop the engine and attach the recovery nozzle 13 to the oil level gauge insertion port of the engine again.
After the air supply nozzle 30 is airtightly attached to the oil inlet of the engine, the start key in the keyboard 38 is pressed, and S8 is pressed.
Transfer processing to. In S8, a cleaning oil recovery process as shown in FIG. 7 is performed, and in S9, the worker returns the recovery nozzle 13 and the air supply nozzle 30 to a predetermined place and removes them as a new oil supply preparatory work in S9. If the selected oil level gauge is returned to the original position of the engine and the course for performing the new oil supply process is selected, the new oil supply nozzle 22 is directed toward the oil inlet of the engine, and the start key in the keyboard 38 is pressed. Press to move the process to S10.

In S10, it is read from the work data whether or not the new oil supply process is to be performed. If the new oil supply process is to be performed, the process proceeds to S11, and the new oil supply process as shown in FIG. 8 is performed. After the oil supply process is completed, the oil exchange work is completed. When the new oil supply process is not performed in S10, the oil exchange work is terminated and the next oil exchange work is awaited.

Next, the respective processes of S3, S6, S8 and S10 in FIG. 4 performed by the engine oil exchanger of this embodiment will be described in detail. First, the waste oil recovery process of S3 is shown in FIG.
Describing on the basis of S1, first, in S21, it is confirmed whether the switching valve 9 communicates the recovery pipeline 8 and the common pipeline 11, and S2
At 2, the timer 36 is reset and started.

In step S23, an air supply signal is output to the compressor 26 to activate the compressor 26 and start sending compressed air into the engine. Then, in S24, it is determined whether or not the timer 36 has counted up to the predetermined time t1,
When the predetermined time t1 has passed, the process proceeds to S25. Here, for a predetermined time t1, it is necessary to drop the waste oil adhering to the cam chamber at the upper part of the engine and the passage communicating with the oil pan at the lower part of the engine to the oil pan by the flow of compressed air.
It is a value preset as sufficient time.

In step S25, the normal rotation start signal is output to the recovery pump motor 17 to start the normal rotation of the recovery pump 16, and the waste oil in the oil pan is started to be recovered. And S26
Then, it is read whether or not the negative pressure switch 19 is turned on, that is, whether or not the recovery end signal is output from the negative pressure switch 19, and if it is turned on, the process proceeds to S27. However, when the negative pressure switch 19 is not turned on in S26, the process proceeds to S28, and it is determined whether or not the compressor 26 is in the activated state.

When the compressor 26 is in the activated state in S28, the process proceeds to S29, and in S29, the pressure sensor 3
It is determined whether or not the pressure value P measured by 1 is a predetermined pressure value P1 or more, and when it is the predetermined pressure value P1 or more,
An air supply stop signal is output to the compressor 26 in S30 to stop the compressor 26, and then the process returns to S26.
The above process is repeated until the negative pressure switch 19 is turned on in S26. It When the pressure value P is less than the predetermined pressure value P1, the process directly returns to S26. At this time, the predetermined pressure value P1 is the maximum pressure value allowed to maintain the airtightness inside the engine, and is a value that is obtained in advance by experiments or the like.

When the compressor 26 is not in the activated state in S28, that is, when it is in the stopped state, S3
In step S31, it is determined whether the pressure value P measured by the pressure sensor 31 is less than the predetermined pressure value P2.
When the pressure is less than the predetermined pressure value P2, an air supply signal is output to the compressor 26 to activate the compressor 26 in S32, and then the process returns to S26. When the pressure value P is equal to or higher than the predetermined pressure value P2, the process directly returns to S26. At this time, the predetermined pressure value P2 is the lowest pressure value for pressurizing the inside of the engine, and is a value that is obtained in advance by experiments or the like.

In step S27, the recovery pump 16 is stopped by outputting a recovery end signal to the recovery pump motor 17 to stop the recovery pump 16, and the recovery of the waste oil in the oil pan is completed. In S33, an air supply stop signal is output to the compressor 26,
The compressor 26 is stopped, the waste oil recovery process is completed,
Return to the main flow.

Next, the cleaning oil supply process of S6 shown in FIG. 4 will be described with reference to FIG. 6. First, in S41, the switching valve 9 connects the cleaning oil supply pipe line 10 and the common pipe line 11 to each other. To switch. In S42, the recovery pump 16
In order to start the reverse rotation, the recovery pump motor 17 outputs a reverse rotation start signal and starts supplying the cleaning oil to the inside of the engine.

In step S43, the set amount of cleaning oil supply is read from the work data stored in the RAM 34, and it is determined whether the supplied amount of cleaning oil measured by the cleaning oil load cell 6 has reached the set amount of cleaning oil supply. Judge until the set amount is reached,
When the set amount of cleaning oil is reached, the process proceeds to S44. S44
Then, the supply stop signal is output to stop the recovery pump 16, the recovery pump motor 17 is stopped, and the supply of the cleaning oil to the oil pan is completed. In S45, the switching valve 9 is returned to the normal state, that is, the state in which the waste oil recovery pipeline 8 and the common pipeline 11 are communicated with each other, the cleaning oil supply process is terminated, and the process returns to the main flow.

Further, the cleaning oil recovery process of S8 shown in FIG. 4 will be described with reference to FIG. 7. First, in S51, it is determined whether the switching valve 9 connects the recovery conduit 8 and the common conduit 11 with each other. After confirmation, the timer 36 is reset and started in S52. In S53, an air supply signal is output to the compressor 26 to activate the compressor 26 and start sending compressed air into the engine. Then, in S54, it is determined whether or not the timer 36 has counted up to the predetermined time t1, and when the predetermined time t1 has passed, the process proceeds to S55. Here, the predetermined time t1
Is a value similar to the predetermined time t1 in the waste oil recovery process shown in FIG. 5, and the waste oil attached to the cam chamber at the upper part of the engine and the passage communicating with the oil pan at the lower part of the engine from the compressed air It is a value set in advance as a time sufficient for the flow to drop it into the oil pan.

In S55, a normal rotation start signal is output to the recovery pump motor 17 to start the recovery pump 16 in the normal rotation direction, and the cleaning oil in the oil pan is started to be recovered. And S5
In 6, whether the negative pressure switch 19 is turned on, that is,
Whether the recovery end signal is output from the negative pressure switch 19 is read, and if it is turned on, the process proceeds to S57. However, when the negative pressure switch 19 is not turned on in S56, the process proceeds to S58, and it is determined whether or not the compressor 26 is in the activated state.

When the compressor 26 is in the activated state in S58, the process proceeds to S59, and in S59, the pressure sensor 3
It is determined whether or not the pressure value P measured by 1 is a predetermined pressure value P1 or more, and when it is the predetermined pressure value P1 or more,
An air supply stop signal is output to the compressor 26 in S60 to stop the compressor 26, and then the process returns to S56.
When the pressure value P is less than the predetermined pressure value P1,
Then, the process returns to S56. At this time, the predetermined pressure value P1 is
It is the same value as the predetermined pressure value P1 in the waste oil recovery process shown in FIG. 5, and is the maximum pressure value allowed to maintain the airtightness inside the engine, which is the value obtained in advance by experiments or the like. ing.

If the compressor 26 is not in the activated state in S58, that is, is in the stopped state, S6 is selected.
In step S61, it is determined whether the pressure value P measured by the pressure sensor 31 is less than the predetermined pressure value P2.
When the pressure is less than the predetermined pressure value P2, an air supply signal is output to the compressor 26 in S62 and the compressor 26
After activating, the process returns to S56. When the pressure value P is equal to or higher than the predetermined pressure value P2, the process directly returns to S56. At this time, the predetermined pressure value P2 is the same value as the predetermined pressure value P2 in the waste oil recovery process shown in FIG. 5, and is the lowest pressure value for pressurizing the inside of the engine, and is obtained in advance by experiments or the like. It has been set to the value.

At S57, the recovery pump 16 is stopped by outputting a recovery end signal to the recovery pump motor 17 to stop the recovery pump 16, and the recovery of the cleaning oil in the oil pan is completed. S6
In 3, the compressor 26 is stopped, the cleaning oil recovery process is terminated, and the process returns to the main flow.

Finally, the new oil supply process of S11 shown in FIG. 4 will be described with reference to FIG. 8. In S71, the supply pump 24 is started, so that the supply pump motor 25 is rotationally started and the inside of the engine is started. Start supplying new oil. In S72, the new oil supply set amount is read from the work data stored in the RAM 34, and it is determined whether the supplied new oil amount measured by the new oil load cell 7 has reached the new oil supply set amount. It judges until it reaches, and when the new oil supply set amount is reached, S
Proceed to 73.

In S73, the supply pump motor 25 is stopped to stop the supply pump 24, the supply of new oil to the oil pan is terminated, the new oil supply process is terminated, and the process returns to the main flow.

The engine oil exchanger equipped with the engine oil recovery device according to the present embodiment is configured and operated as described above to supply compressed air even if the waste oil and the cleaning oil to be recovered have high viscosities. The flow of compressed air causes waste oil and cleaning oil adhering to the passage communicating with the oil pan at the lower part of the engine from the cam chamber at the upper part of the engine and the new oil supply port to fall, and the compressed air sent is Since the waste oil and the cleaning oil in the oil pan are pressurized, the supply of this compressed air improves the recovery efficiency of the recovery pump and shortens the recovery time.

In this embodiment, the compressor 26 is stopped when the pressure value P is equal to or higher than the predetermined pressure value P1 in the waste oil recovery process and the cleaning oil recovery process. However, the present invention is not limited to this. It may be operated without load without any operation. In this case, the no-load operation is canceled when the pressure value P is less than the predetermined pressure value P2.

Further, in the present embodiment, the supply of the cleaning oil is performed by the recovery nozzle 13 via the recovery pump 16, but the switching valve 9 is provided in the new oil supply conduit 20 and the cleaning oil supply conduit 10 is provided. The cleaning oil may be supplied from the new oil supply nozzle 22 via the new oil supply pipe 20, the supply pump 24, and the new oil supply hose 21 while being connected to the new oil supply pipe 20.

Further, the engine oil recovery system of this embodiment is not provided with a cleaning oil tank and is used in an engine oil exchanger having no cleaning function, and the recovery system pipelines such as a waste oil tank, a recovery pump and a recovery nozzle are also provided. It may be used as an engine oil recovery device having only the recovery function configured in.

[0044]

According to the present invention, the engine oil recovery device is provided with the air supply means suction for supplying air into the engine, and drives both the suction means and the air supply means at the time of engine oil recovery. As a result, the engine oil adhering to the passage communicating from the new oil supply port on the upper part of the engine to the oil pan on the lower part can be quickly dropped into the oil pan by the flow of the supplied air, and the internal pressure inside the engine can be reduced. Therefore, even if the viscosity of the engine oil to be sucked is high, the suction efficiency of the suction means can be improved, and the suction time of the engine oil can be shortened.

[Brief description of drawings]

FIG. 1 is an overall configuration diagram in this embodiment.

FIG. 2 is a circuit configuration diagram in the present embodiment.

FIG. 3 is a layout configuration diagram of a keyboard 38 in the present embodiment.

FIG. 4 is a main flow chart of an oil change operation using the engine oil changer of the present embodiment.

FIG. 5 is a flowchart of a waste oil recovery process in this embodiment.

FIG. 6 is a flowchart of a cleaning oil supply process in this embodiment.

FIG. 7 is a flowchart of a cleaning oil recovery process in this embodiment.

FIG. 8 is a flowchart of a new oil supply process in this embodiment.

[Explanation of symbols]

 1 ... Engine oil exchanger main body 2 ... Waste oil storage tank 3 ... Washing oil storage tank 4 ... Fresh oil storage tank 8 ... Waste oil recovery pipeline 9 ... Switching valve 10 ... Washing Oil supply conduit 11 ... Common conduit 13 ... Recovery nozzle (engine oil recovery nozzle) 16 ... Recovery pump (suction means) 20 ... New oil supply conduit 22 ... Supply nozzle 24. .. Supply pump 26 ... Compressor (air supply means) 28 ... Air supply pipe 30 ... Air supply nozzle (air supply nozzle) 32 ... Control device (control means)

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Mitsuharu Yoyasu 1-3-6 Fujimi, Kawasaki-ku, Kawasaki-shi, Kanagawa Tokiko Co., Ltd. (72) Satoshi Sakauchi 1-6-6, Fujimi, Kawasaki-ku, Kanagawa Prefecture No. 3 Tokico Corporation

Claims (1)

[Claims] 1. An engine oil recovery device for recovering engine oil in an engine into a recovery storage tank outside the engine, wherein the engine oil is inserted into the engine through an oil level gauge insertion port of the engine and is airtight in the oil level gauge insertion port. An engine oil recovery nozzle that is mounted and that blocks the oil level gauge insertion port, a suction means that is connected to the engine oil recovery nozzle through a suction conduit and that suctions the engine oil in the engine, and a new oil supply port of the engine Airtightly attached to the air supply nozzle for closing the new oil supply port, the air supply nozzle connected to the air supply nozzle via the air supply line, and supplying air into the engine, A control means for driving both the suction means and the air supply means, and Gin oil recovery device. [0001]