JPH03164507A - Extraneous matter removing device for valve - Google Patents

Abstract

PURPOSE:To remove extraneous matter without overhauling an engine by forming a hole in at least one of an intake path and an exhaust path, and inserting an extraneous matter removing member from the outside through the above hole, thereby removing extraneous matter adhering to intake and exhaust valves and its peripheral portion. CONSTITUTION:Tapped holes 8, 9 respective opened and closed by covers 10, 11 are previously provided on an intake pipe 6 and an exhaust pipe 7 of an engine. At the time of removing extraneous matter of valves, the cover 10 (or 11) is detached to open the tapped hole 8 (or 9). A flexible shaft 38 including a brush 39 mounted on the forward end portion and a gripping portion 40 provided on the trailing end is inserted in the tapped hole 8, the brush 39 is pressed to extraneous matter 36, and the grip portion 40 is held to move the shaft forward and backward, or the shaft 38 is turned on its axis, thereby removing the extraneous matter 36. After the extraneous matter 36 ds removed, the shaft 38 is pulled out, and the tapped hole 8 is closed by the cover 10. Thus, the work for removing extraneous matter is ended.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a valve deposit removal method for removing deposits deposited on intake and exhaust valves of internal combustion engines.

[Prior Art] In recent years, industrial endoscopes have been widely used which allow inspection and inspection by inserting an elongated insertion section into the interior of boilers, turbines, engines, chemical plants, and the like.

In particular, with endoscopes for engines, check for burnt piston heads and scratches on the cylinder inner wall.
There has long been a desire to inspect the inside of an engine's combustion chamber without major disassembly, such as whether there is any foreign matter attached to the intake or exhaust valves or whether the gasket between the cylinder block and cylinder head is deformed. there were.

As a conventional example, for example, Japanese Patent Application Laid-Open No. 61-294341 discloses that in an internal combustion engine having an exhaust valve or an intake valve, an inspection port that can be opened and closed is provided in the exhaust or intake passage, and an internal combustion engine using a fiberscope or the like is installed in the inspection port. A method of inspecting intake and exhaust valves is shown in which the condition of the valve stem and seat of the valve seat is inspected by inserting a scope.

[Problems to be Solved by the Invention] In the conventional example described above, it is possible to inspect the deposits attached to the intake and exhaust valves, but if the deposits are φ, they are disassembled and removed (-11 This method has the disadvantage that the object must be removed, making it a time-consuming task.

The present invention has been made in view of the above-mentioned points.
1. It is an object of the present invention to provide a method for removing debris that can be removed without requiring disassembly when there is debris attached to the non-air valve or the surrounding area of the valve.

[Means and effects for solving the problems] The present invention includes an insertion hole forming process in which an insertion hole that can be opened and closed and communicates with the outside is provided in at least one of the intake passage and the exhaust passage, and a method for removing the 41 kimono from the insertion opening. A removal process in which a removal member is inserted to remove deposits attached to the intake valve that opens and closes the intake passage, the exhaust valve that opens and closes the exhaust passage, or its surroundings, and after this removal process,
Pull out the removal member from the insertion opening and
By using the insertion port closing process, which is closed in step 1, and the debris removal method, it is possible to remove deposits that have adhered to the intake valve or exhaust valve or the surrounding area thereof, without requiring disassembly of the engine. There is.

[Example] Hereinafter, the present invention will be specifically explained with reference to the drawings.

Figures 1 and 2 relate to the first embodiment of the present invention, with Figure 1 showing an endoscope being used to check for deposits on the valve, and Figure 2 showing deposits on the valve. This figure shows how it is being removed with a removal member.

In the method of the first embodiment, as shown in FIG. 2, an industrial endoscope device 1 is used to inspect the presence or absence of deposits in the engine 3 of a car 2, for example, and then, as shown in FIG. The deposits are removed using a

Prior to the inspection process using this equipment @1, first
As a process, screw holes 8 and 9 are provided in the intake pipe 6 and the exhaust pipe 7 to serve as insertion ports communicating with the outside. Each screw hole 8
, 9 can be opened and closed at 110 and 11, respectively.

These nets 7t formed by this first process,
8 or 9, as a second process, as shown in FIG. 2, for example, a fiber scope 12 is inserted to check whether there is any deposit on the intake valve 13 or the exhaust valve 14 in the engine 3. .

The fiberscope 12 used for this inspection has a flexible insertion section 15 with a length of m, a large operation section 16 connected to the rear end of this insertion section 15, and a large operation section 16 connected to the rear end of this operation section 16. The light guide cable 18 is comprised of an eyepiece section 17 and a light guide cable 18 extending outward from the side of the operation section 16 .

The insertion section 15 includes a hard tip 19 and a hard tip 19.
A curved portion 2 that is formed on the rear side adjacent to the
0, and a long flexible tube section 21 formed from the rear end of the curved section 20 to the front end of the operating section 16.

A light guide 22 for transmitting illumination light is inserted into the insertion PI 115, and this light guide 22 is connected to the operation unit 1.
The light is further transmitted through the light guide cable 18 extending from the light guide cable 18 , and reaches the light guide connector 23 at the end of the light guide cable 18 .

By connecting this light guide connector 23 to the light source device 24, illumination light is supplied from the lamp 25. This illumination light is transmitted by the light guide 22 and emitted forward from the distal end surface attached to the distal end portion 19. The test site illuminated by this emitted illumination light is the tip part 1
An image is formed by an objective lens 26 attached to 9 on one end of an image guide 27 disposed at its focal plane.

The optical image formed at one end is transmitted to the other end of the image guide 27 on the eyepiece 17 side, and can be magnified and observed through an eyepiece (not shown) in the eyepiece 17. There is.

The engine 3 observed with the fiberscope 12 is
As shown in FIG. 1, the combustion chamber 29 is composed of a cylinder block 30 and a cylinder head 31, and a piston 32 that reciprocates within the cylinder block 30. The cylinder head 31 is equipped with a spark plug (not shown). A removable spark plug hole 34, and valve seats communicating with the intake pipe 6 and exhaust pipe 7 on both sides of the spark plug hole 34 are provided with an intake valve 13 and an exhaust valve that open the intake pipe 6 and the exhaust pipe 7, respectively. 14 is protrusively provided.

The intake valve 13 and the exhaust valve 14 tend to have carbide deposits 36 attached thereto due to incomplete combustion of gasoline, etc., and a screw hole 8 serves as an insertion port for inspecting the presence or absence of the deposit 36. 9 is formed, and then, as shown in FIG. 2, the distal end side of the firebascope 12 is inserted to examine the presence or absence of deposits 36.

If deposits 36 are present, the fiberscope 12 is pulled out, a third process is performed in which the removal member 4 is inserted through the screw hole 8 as shown in FIG. 1, and the deposits 36 are then removed. Perform the fourth process.

The removal member 4 includes, for example, a flexible shirt 1 to 38, a brush 39 for removing deposits provided at the tip of the shaft 38, and a large-diameter grip portion 40 formed at the rear end of the shaft 38. As shown in FIG. The process of removing the deposits 36 by rotating or reciprocating around one sleeve of the shirts i to 38 and scraping off the deposits 36 with the brush 39 is performed.

Next, as a fifth process, the removal member 4 is handled, the fiberscope 12 is inserted again through the screw hole 8, and
It is confirmed whether the deposit 36 has been sufficiently removed.

If the removal is not sufficient, use fiberscope 1.
2, insert the removal member 4 again, and remove the deposit 36.
Carry out removal work.

On the other hand, if it is confirmed that the deposit 36 has been sufficiently removed, an insertion port closing process is performed in which the screw hole 8 is closed with ff110 as a sixth process.

The method for removing the deposits 36 on the intake valve 13 side has been described above, but the deposits 36 attached to the exhaust valve 14 can also be removed using a similar process on the exhaust valve 14 side.

According to the method of the first embodiment, it is possible to insert the engine 3 from the insertion port and check for deposits without disassembling the engine 3, and if there is deposits, the removal member 4
can be inserted to remove deposits.

Therefore, the deposits 36 can be removed in a short time without requiring troublesome disassembly work.

It should be noted that the first process of forming the insertion port in this first embodiment is only necessary the first time, and is not necessary from the second time onwards. Incidentally, deposits 36 attached to the stem portion of the valve 13 or 14 or the surrounding area thereof can also be removed in the same manner.

Next, a second embodiment of the present invention will be described with reference to FIG.

In this second embodiment, as in the first embodiment, a screw hole 8 is formed as a first process, and then, as shown in FIG. 3, a removal member 51 is inserted through this screw hole 8. This removing member 51 does not have the gripping portion 40 of the removing member 4 shown in FIG. 1, for example, but is composed of a shaft 38 and a brush 39.

Next, the rear end of the removal member 51 is connected to the rotation I sleeve of the motor 53 via the connecting pipe 52.

This motor 53 is connected to a power source (not shown) via a cable 54, and driving power can be supplied from the power source by operating a switch or the like.

Next, the motor 53 is driven to rotate the removal member 51 as shown by arrow C, and the deposit 36 is removed with the brush 39.

After removing the deposit 36, stop the motor 53, pull out the removal member 51 from the screw hole 8, and close the screw hole 8 with the lid 10.
Close.

The method of the second embodiment requires skill because it does not check the presence or absence of the deposit 36 or confirm whether the deposit 36 has been removed after the removing member 51 removes the deposit. This has the advantage that the scope 12 does not need to be used. Alternatively, the extent of the deposit 36 may be estimated based on whether or not the deposit 36 is attached to the tip of the removal member 4 by performing an operation to remove the deposit 36 using the removal portion 4.

It is clear that the same method can be used for the exhaust valve 14, so the explanation thereof will be omitted.

Furthermore, it is clear that the method of the first embodiment and the method of the second embodiment can be combined as necessary. Also, in place of the removal member 4 used in the first embodiment, a second
It is clear that the removal member 51 and the motor 53 connected via the connecting pipe 52 used in the example can be used.

Next, referring to FIG. 4, a third embodiment of the present invention will be described below.

In this third embodiment, a fiber scope 12' with a channel is used, and a removal member 4, for example, is inserted into the channel to remove the deposit 36.

The channel-equipped fiberscope 12' is the same as the fiberscope 12 shown in FIG.
The removal member 4 is inserted through this insertion port 61, and the brush 39 side can be made to protrude from the tip opening of the channel.

Using this channeled fiberscope 12', the deposit 36 can be removed in the following manner.

First, the insertion part 15 of the fiber scope 12' can be inserted into the intake pipe 6, and a screw hole 8 is formed which can be closed after removal. This process is not necessary if the screw holes 8 are already provided.

Next, from the screw hole 8, the channeled fiberscope 1 is inserted.
2' is inserted, and the presence or absence of deposits 36 on the intake valve 13 is checked.

If there is no deposit 36, this fiber scope 12
', close the screw hole 8 with 1M10, and remove the exhaust valve 14.
Remove deposits from the sides.

If there is any deposit 36, insert the distal end of the removal member 4 from the channel insertion port 61, protrude the brush 39 from the channel as shown in FIG. 39 against the deposit 36, rotate or move the grip part 40 back and forth, and remove the brush 39.
Remove the deposit 36 with the steps.

Observing the removal of the deposit 36 by this brush 39,
When the deposit 36 has been sufficiently removed, the fiberscope 12' is pulled out together with the removal member 4, and then the screw hole 8 is closed with the lid 10.

The deposits 36 can also be removed from the exhaust valve 4 side using a similar process.

According to the method of the third embodiment, since the removal work of the deposits 36 by the removal member 4 can be observed at all times, the deposits 36 can be efficiently removed. In addition, since it is possible to simultaneously observe with the fiber scope 12' whether or not the deposit 36 has been removed without first pulling the removal member 4 to the center, the number of times of handling the removal member 4 through the screw hole 8 and inserting the screw hole 8 is reduced. can. Therefore, the deposit 36 can be removed in a short time.

In the embodiment described above, the fiberscope 12 or 12' is used as the observation means, but CO
An electronic scope with a built-in solid-state imaging device such as D or the like may be used, or a fiber scope with a television camera attached to the eyepiece may be used.

Further, the means for removing the deposits 36 is not limited to the brush 39 attached to the tip of the shaft 38, but may also be a blade for scraping off the deposits 36, or a device having an uneven surface (such as a file) for scraping off the deposits.

Further, a means for removing deposits may be attached to the distal end of a fiber scope or an electronic scope, and the deposits 36 may be removed by moving the scope back and forth, rotating, or the like.

Furthermore, as a removal means, an ultrasonic transmission rod or the like may be applied to the deposits to remove the deposits.

In each of the above-described embodiments, the insertion opening into which the removal member 4 and the like are inserted is described as a screw hole, but it may not be a screw hole but may be a hole that can be closed by press-fitting or the like as long as it can be opened and closed.

[Effects of the Invention] As described above, according to the present invention, an insertion port communicating with the outside is provided in an intake passage or an exhaust passage, and a deposit removal member is inserted from the insertion port to remove deposits. Since the insertion port is then closed, deposits attached to the valve or its surroundings can be removed without the need for troublesome disassembly of the engine.

[Brief explanation of the drawing]

1 and 2 relate to the first embodiment of the present invention, FIG. 1 is an explanatory diagram that does not show how deposits are removed using a removal member, and FIG. FIG. 3 is an explanatory view showing how the presence or absence of adhesion is being checked, and FIG. FIG. 7 is an explanatory diagram showing how a removal member is inserted into a channel of an endoscope to remove deposits according to a third embodiment of the present invention. 1... Endoscope device 2... Car 3...
Engine 6...Intake pipe 8.9...Screw hole 12...Fiberscope 14...Exhaust valve 3o...Cylinder block 31...Cylinder head 38...Shaft 4...Removal member 7...Exhaust pipe 10.11...Lid 13...Intake valve 36...3 deposits...Brush

Claims (1)

[Scope of Claims] An opening process of forming a hole in at least one of an intake passage and an exhaust passage; an insertion process of inserting a removal member for removing deposits from the openable and closable hole communicating with the outside; a removal process for removing deposits adhering to an intake valve that opens and closes the intake passage or an exhaust valve that opens and closes the exhaust passage; and a hole that closes the hole by pulling out the removal member from the hole after the removal process; A method for removing valve deposits consisting of an occlusion process and.