JPS58211518A - Lubricating device for internal-combustion engine - Google Patents

Abstract

PURPOSE:To facilitate a machining and a manufacturing of a lubricating device by a method wherein when oil passages are arranged to be communicated to each other in a crank case, cylinder block and cylinder head, these oil passages are arranged on a linear line in a direction crossing at a right angle with engaging surfaces of each of said members. CONSTITUTION:An oil reservoir 61 is formed at an abutting part between a crank case 1 and a crank case over 60 and then the discharged oil from an oil pump is fed to it. The oil in the oil reservoir 61 is guided to a distribution chamber 62 and an oil passage 63 in a crank shaft 26 and at the same time fed to a forcing passage for opening and closing the bearings 29 and 29 through the distribution passage and the main passage formed in said cover 60. Oil passages 69 and 69 are formed in the supporting walls 31 and 32 of crank case 1, one end of the passage 69 is opened at a journal part of the bearing 29 and the other end is opened at a connecting seat surface 7 of crank case 1, respectively. The passage 69 is communicated with the oil passages 70 and 71 formed in the cylinder block 6 and the cylinder head 8, respectively, and enables a feeding of oil to the moving valve mechanism 25.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention is applicable to, for example, an overhead cam type internal combustion engine.
The lubricating oil pumped by the oil pump is sent to a lubricating device 114 that supplies the lubricating oil to the valve mechanism of the cylinder head.

In this glazed internal combustion engine, the lubricating oil that lubricates the valve mechanism such as the camshaft passes through an oil passage that is continuous to the delivery pipe, crankcase, cylinder bottom, and cylinder head outside the engine. It's from the guide.

However, in the case of using a delivery pipe, a special VR structure that is in contact with the liquid in the knife is required, which results in a large number of parts and high costs.

Also, since the conventional oil passages are complicatedly curved in the crankcase and cylinder head, it is difficult to use the Hv type by Guicast. - Even if machining is performed using a manual process, processing is troublesome and there are drawbacks that require time and effort to manufacture.

The present invention was made based on these circumstances,
Its purpose is to the crankcase, cylinder block, and cylinders.

In order to connect the oil passages in the cylinder, it is possible to install these oil passages in a straight line along the direction perpendicular to the crankcase, the cylinder head, and the base surface of the cylinder head. Shi, special f IJ pa IJ z?
Inno is a disgrace and aims to provide an internal combustion engine Kaida lubrication device that requires less man-hours and is easy to manufacture.

An embodiment of the present invention will be described below based on drawings in which the present invention is applied to a V-type two-cylinder internal combustion engine for a motorcycle.

In the diagram, 1 is the crankcase, left and right case components 2
．． 3 against each other to form #l.

On the upper surface of the crankcase 1, a front cylinder 4 and a rear cylinder *5 are installed with a predetermined included angle between them. When viewed from the side, the power is distributed in a roughly ■ shape. Since the front cylinder 4 and the ridge cylinder 5 are structured according to the rules, the front cylinder 4 side will be explained as a representative, and each part of the ridge cylinder 5 will be given the same number and the explanation thereof will be omitted.

That is, 6 is bent by the cylinder block and abuts against a connecting seat surface 71 formed on the upper surface of the crankcase 1.

On the upper surface of the cylinder pro and ri 6, the cylinder 8 is abutted, and these cylinders 8 and the cylinder pro 7 are collinear on the connecting seat thi by the gelt 9... .

A cylinder 11 connected to the crank chamber 1o is formed in the cylinder 6, and a piston 12 is housed in the cylinder 11.

The trenched cylinder head 8 has an intake air connected to the combustion chamber 13.
-) J 4 and exhaust y/-) 15 are formed and a valve 17 is installed to open and close these intake/-) J 4 and exhaust $-t zs. A cam chamber 19 is formed between the cylinder, the door 8, and the door cap 18, and within this cam chamber 19, one camshaft 2o, a port, and a shaft 21, 22 are pivotally supported. The camshaft 20 is rotatably mounted on the rocker shafts 21 and 22, and
Intake vanotob 16 o- via arm 23.24'fr
Therefore, in this embodiment, t-1, camshaft 20,
mouth, shaft 21.22 and rocker 7mm 23,
24 constitutes a valve mechanism 25. A crank @26 is accommodated in the Buha crank chamber 10. The crankshaft 26 is composed of three parts: a crank pin 21, crank webs xa, xa, and crank journals 29, 29 at both ends. It is pivotally supported via bearings 33, 33.

The crank pin 27 of the crankshaft 26 has a piston 12.5 in each cylinder. Connecting rod 3 connected to IJl
4 and 34 are commonly connected. In addition, each crank journal: 29, 29tl (has drive tooth portions 35, 35 integrally carved, and each drive tooth portion 35, 35 and camshaft 2
A cam chain 37 is installed between the sprocket 36 and the sprocket 36 fixed at one end of the cam chain 37.

Inside the crankcase 1, an intermediate shaft 38 and an output shaft 39 are parallel to the crankshaft 26, and bearings 40...
is supported by. A driven gear 41 is fixed to the right end of the shaft 3B.
1 is the drive gear 4 fixed to the right end of the crank @126
It meshes with 2.

Therefore, the rotation of the crankshaft 2e is transmitted to the intermediate shaft 38 via the drive gear 41 and the driven gear 41. Further, the intermediate shaft 38 and the output shaft 39 are connected via a constantly meshing variable speed vehicle group 43 consisting of a plurality of chain gears and countertires mounted on both shafts. A drive shaft 44 is supported on the left side of the rear end inside the crankcase 1 along a direction perpendicular to the output shaft 39 via bearings 45 and 45. A bevel gear 46 is rotatably attached to the drive shaft 44, and this bevel gear 46Jd is meshed with another bevel wheel 41 fixed to the left end tc of the output shaft 39. It is connected to the drive shaft 44 via. This plate impact mechanism 48 has a spring receiver 49 attached to the front end of the drive shaft 44 and a damper sleeve 50 that is engaged with the outer peripheral surface of the drive shaft 44 in a straight line. The first cam If15 has a concave and convex shape formed on the damper sleeve 50.
2 is also formed on the bevel gear 46 and abuts against the second cam surface 53 having a nine-convex shape. Therefore, the power of the output @sit transmitted to the bevel gear 46 is transmitted to the first and second cam surfaces 53. Through 52.53, Danno everyone is conveyed to Sleeve 50,
From here, it is transmitted to the drive shaft 44.

Incidentally, a strainer 55 is provided at the bottom of the crankcase 1, as shown in Fig. 61v5, for sucking lubricating oil stored in a passage oil pan 54, and a suction passage 56 formed at the bottom of the strainer 5sFi crankcase l is provided. The oil pump 57 is connected to the oil pump 57 through the oil pump 57.

The oil pump 52 is driven by the crankshaft 26,
The discharge port 58 communicates with an oil sump 6 formed in a storage area between the crankcase 1 and the crankcase cup 60 through an oil filter 59'fL-. This oil acid 61i7Ll is connected to the distribution chamber 62 formed in the rank case cover 60.
The end of one of the crank journals 29 is closely spaced between the distribution chamber 52 and the oil passage 63 in the crankshaft 26.
are in communication. The crank pin 27 is provided with a pair of supply holes 64, 64, one end of which opens on its outer peripheral surface, and the other end of which reaches the oil passage 63.

A distribution passage 65 branches off from the distribution chamber 62 as shown in FIG. This distribution passage 65 is formed in the crankcase cover 60 and communicates with a main passage 66 provided in the crankcase 1. The main passage 66 is below the crankshaft 26 and its crank journal 29.29.
Support M31. S! 'r! 1 is also connected to the main passage 66, and the other end is connected to the main passage 66 in the lower part of the crankshaft 26 that is placed in the retainer 1i31.32. 29
．． A pressure feeding passage 6f/611 opening at the shaft support of 29 is formed. In addition, within the support walls 3) and 32, there is an oil path 6916 located above the crankshaft 26.
9 is formed and 1 is formed. One of the first oil passages 69 is on the front part 4 side, and the other first oil passage 69F
The one on the cylinder 5 side of the ridge part opens into the shaft support of the crank journal 29.29, and the other end opens into the joint seat surface 7 of the crankcase J. . An example of #'i#' in the cylinder block 6, 2 oil passages yy
o is formed, and the leg end of this downward 2 oil passage 70 is connected to the soil pipe connecting seat surface 7 and the cylinder, and to the cylinder surface r.
(A tP3 oil passage 71 is formed on one side of the cylinder block 8, and one end of the coffin 3 oil passage 71 is connected to the cylinder block 6. The other end is opened to the shaft portion of the rocker shaft 21 on one side. ,'t, crankcase 11 cylinder valve o
Is it possible to mold it at the same time as the die-cast molding of 2-6 Table 5 and the cylinder head 7, or after the mold-forming of the upper NCi crank coos J bar? - Rings are formed by forming holes by machine-like processing, and are provided in a straight line in a direction perpendicular to the abutting surface of the rad 8 to the connecting seat m+ 7, the cylinder block 6, and the cylinder, respectively. The abutting surfaces of the connecting seat 7 and the cylinder block 6 that abut against the connecting seat 1 have a diameter larger than that of wJ1 oil passage 69 and a second oil passage 170, respectively, and a groove. Concave portions 72.7J are provided which are connected to each other, and these concave portions 72 and 7J face each other in a state where the connecting seat direction 2 and the cylinder block 6 are abutted,
A cylindrical communication chamber 74 is formed between these abutting surfaces. This communication chamber 74 is connected to the first oil iB path 69 and the second oil iB path 69.
The positional deviation between the oil passages 70 is absorbed and the inner passages 69 and 10 are communicated with each other. and recess 12.7
A hollow cylindrical collar 25 is placed between 3 and 3, and the outer 9/4 of this collar 16 is located between the upper and abutting sides to prevent oil leakage from between the recesses 72 and 73. 0 ring 76 is worn. In addition, such a communication chamber 14
is the balance se between the cylinder block 6 and cylinder head 8
(Also provided are a second oil passage 70 and a third oil passage 1
Since this Narazō is exactly the same as the one mentioned above, we will give it the same number and omit its Kinmei.

The cylinder is connected to the i3 oil passage y111 of the door and the hollow passage 17 in the rocker shaft 21. One end of the rocker shaft 21 opens to the outer peripheral surface of one branch of the rocker arm 23, and the other end opens to the hollow passage 17. The paper sheets 1178 to be opened are completely formed. The third oil passage 21 is connected to the cam shirt) 2 (
There is an oil bore 8orc reverse passage provided in the 11th branch of J, and a portion of the lubricating oil sent to this oil chamber 80 is transmitted through the clearance between the camshaft 20 and this shaft branch to the cam. l'jt iJl -t on the side of shaft 20
It looks like it's coming. The oil 1aokn is branched off into another communication path 81, and this communication path 81 is connected to the intermediate communication 1g82 in the rocker shaft 22 through the shaft support of the narrow rocker shaft 22. The rocker shaft 22V (one end of which is the shaft support l of the rocker arm 24 (ff1i FCfA port supply (18... n+4 and intake valve J6
A jet hole 83.83 is formed which opens toward the contact portion with the exhaust pulp 7, and this jet hole 83.81
The opening leads to the pivot point with the shaft 21.22.

A distribution path 84 branched from the main passage 66 is led to one end of the middle n+1 shaft 38, and a screw pump 86 for feeding button lubricating oil to the passage 85 in the middle 113B is connected to the one end. I'm being kicked.゛Also, the other end b of the intermediate shaft 38
Another screw pump 87 for discharging the lubricant fed into the passage 85 is also provided at u. An oil supply hole 88 is formed in the middle h1j shaft 38, one end of which passes through the passage 85, and the other end connected to the outer circumferential surface of the shaft support of the change gear that constitutes the speed gear 43. Furthermore, a supply path 8g that is shielded from the first oil trace path 69 is communicated with the right end shaft support of the output shaft 1390, and this supply path 8g communicates with a passage 90 in the output shaft 39. When one end of the output shaft 59KFi is connected to the passage 90, an oil supply hole 91 is formed in which the other end opens to the shaft support of the change gear. The left end of the passage 9o is opened in the shape of a nozzle.
is opposed to the side.

In the internal combustion engine having such a configuration, the illumination lubricant stored in the oil tank 54 flows through the various parts of the engine through the routes described below.

Mail pumped up by Oilung 51/Fuo 7
54 is filtered by an oil filter 59 and is pumped into the distribution chamber 62 via the oil sump IBGs. In this distribution chamber 62, an oil passage 63
and a distribution channel 65 ill. Pressure feed ittt fc into oil passage 63, #I slip oil, supply hole 64s6
4 to lubricate the shaft support of the connecter rod 34.34, and pull it out from the spout hole to the inside of the piston 12,
The piston J1 and cylinder 11 are lubricated and cooled.

On the other hand, the lubricating oil pumped into the distribution passage 65 is guided to the crank journals xe and xeO through the main passage 6C and the pressure passage 61.68, and slides through this ζ by 1 wa. The lubricating oil that lubricates the shaft portion of the crank journal jsexy passes around the bearings ss and ss, is led to the lubricant oil passage 69, and from there to the second oil passage i.

and is pumped through the third passage 71 to the shaft portion of the shaft 21. This lubricating oil further flows into the oil chamber 8011Cfli via the communication path 11, and a part of it is ejected from the shaft support at one end of the camshaft 2o.
) is led to the opening and the shaft portion of the shaft 22 via another communication path 81.

Therefore, this lubricating oil has a 20° opening,
Not only does it lubricate the shafts 21, 22 and the shafts of the shafts 23, 24, but it also attaches to the valve mechanism 25 to lubricate and cool it.

The lubricating oil of , , and is returned to the oil nozzle 54 via a return passage f (not shown).

A part of the lubricating oil trapped in the main passage 66 is guided to the intermediate shaft 38 through the distribution passage 84, and
In addition to lubricating the shaft supports at both ends of 80, the oil supply hole 88...
Lubricates the shaft part of the change gear through. Furthermore, the first
A part of the lubricating oil force-fed into the oil passage 69 is guided to the output shaft 39 side through the supply passage 89, and lubricates this shaft support.
8 and lubricates this buffer & structure 48.

According to the configuration explained above, the first oil passage leads lubricating oil to the crankcase 1, cylinder pro, rear 6 and cylinder, to one cylinder in the door 8, and to the valve train rear wheel 25 of the door 8. &69, second oil passage 70 and third oil passage 7
1 are provided in series with each other, there is no need for a special delivery pipe or its connection structure, and the number of parts can be reduced.

In this case, each oil passage 69, 10° 71F
i. Since the abutting surfaces of the crankcase 1, cylinder block 6, and cylinder head 8 are carved in a straight helix shape with 10 intersecting directions, when manufacturing by molding such as Guicast molding, the structure of the mold is simplified. Drilling holes again with a drill 4? 'In the case of machining,
It can be finished with one cutting process, so there is no need to change the posture of the cylinder pro, ri 6, etc. many times.
It is possible to reduce the number of work processes, therefore,
Manufacturing is easy, whether by molding or machining, and combined with the elimination of the need for the above-mentioned delipari no arm, it is possible to reduce costs. Since each of these oil passages 69.degree. 10.11 extends in a straight line toward the cylinder 8, there is an advantage of the cape having less resistance to the flow of lubricating oil flowing inside.

In the above-mentioned embodiment, the camshaft is connected to the cylinder and the OHC internal engine is installed in the cylinder. The so-called OHV
Even if the internal combustion engine is open, the same applies to Torasei*J.

Furthermore, the internal combustion engine according to the present invention is not limited to a V-type engine, and may be, for example, a general parallel multi-cylinder internal combustion engine B', 1 or a single-cylinder internal combustion engine.

The present invention described in detail above has a structure in which oil passages for supplying lubricating oil to the valve drive piles are provided in succession in the crankcase, the cylinder head, the cylinder, and the cylinder. It is installed in a straight line along the direction perpendicular to the abutting surfaces of the crankcase and cylinder. According to this product, not only is there no need for a glossy delivery/mother eve, but also molding such as the above-mentioned oil channel number guicast molding (therefore, when molding, the structure of the mold is simplified, and the hole The opening is formed by machine processing of the fathom.In some cases, it can be finished in one process, reducing the number of work steps.Therefore, manufacturing becomes easier and costs can be reduced, etc. I'm stunned.

[Brief explanation of the drawing]

Figures i'h+ show one embodiment of the present invention; Figure 1 is a partially sectional side view, Figure 2 is a sectional view, and Figures 3 and 4.
Figure 115 is a cross-sectional view showing a lubricating oil flow path, and Figure 115 is a configuration diagram showing a partial cross-section of the lubricating oil flow path. 1... Crank case, 6... Cylinder groove,
8... Cylinder head, 25... Shaft valve mechanism, 69°70.11... Oil passage (M 1g 2nd and 3rd oil passage)

Claims (1)

[Claims] In an internal combustion engine equipped with a break valve mechanism in the cylinder head,
Oil passages for supplying lubricating oil to the above-mentioned valve train are provided in the crankcase, cylinder block, and cylinder head in communication with each other, and the oil passages in the crankcase, cylinder block, and cylinder head are A lubricating device for an internal combustion engine, characterized in that one lubricant is provided on each crankcase, cylinder pro, and cylinder along a direction perpendicular to the plow stand surface.