JPH0354310A - Lubricant oil guide device of engine - Google Patents

Abstract

PURPOSE:To commonly utilize an oil pan against cylinder blocks of various shapes by forming guide members which introduce lubricant oil independently of an oil pan and a buffle plate while installing on either of them. CONSTITUTION:Lubricant oil which is going to drop in an oil pan 24 from returning oil passages 34, 35 is introduced to the bottom of the oil pan 24 by guide members 36, 37. The guide members 36, 37 are formed independently of the oil pan 24 and a buffle plate 27, and installed on either of them. Even if the positions of the returning oil passages 34, 35 are different in every of cylinder blocks 12 of various shapes, it is necessary to install the guide members 36, 37 on the oil pan 24 or the buffle plate 27 corresponding to the lower ends of the returning oil passages 34, 35.

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a lubricating oil guiding device for an engine, and more specifically, to prevent lubricating oil from falling from the cylinder block side into an oil pan. This invention relates to a device for guiding.

(Prior Art) An engine is normally provided with an oil pan that covers the bottom side of the cylinder block, and lubricating oil is stored in this oil pan. This lubricating oil is then sucked up by an oil bomb and supplied to the crankshaft support, and after lubricating these, it is returned to the oil pan. In the above case, a return oil passage for lubricating oil that is returned from the E side of the cylinder block toward the inside of the cylinder block is formed in the cylinder block. In the above configuration, if lubricating oil is allowed to fall freely from the lower end of the return oil path into the oil pan, it will fly off and cause the following problems. That is, firstly, the lubricating oil that has blown off is likely to be scooped up by the crankshaft, resulting in a loss of power. Secondly, there is a risk that the scattered particles of lubricating oil may be discharged outside the machine through the breather hole or the like.

Therefore, conventionally, a guide body was provided to guide the lubricating oil that was about to fall into the oil pan from the lower end of the return oil passage to the bottom of the oil pan, and this guide body was integrally molded with a cast oil pan. There is.

(Problems to be Solved by the Invention) Incidentally, cylinder blocks are required to meet many conditions such as engine performance, so their shapes differ depending on the engine, and there are many types in this respect. On the other hand, the oil pan has a relatively simple shape because it has fewer requirements, and for this reason, this oil pan can be used in common with various cylinder blocks. However, when the guide body is integrally molded into the oil pan as described above, it is necessary to make the guide body correspond to the return oil passage of each of the 11 cylinder blocks.
For this reason, the cylinder block has to be molded for each type of cylinder block, which hinders the common use of cylinder blocks.

(Object of the Invention) This invention was made in view of the above-mentioned circumstances, and an object thereof is to make it possible to use a common engine for cylinder blocks of various shapes. (Structure of the Invention) The present invention is characterized in that it includes an oil pan that covers the bottom side of the cylinder block, and a baffle plate that partitions the bottom side of the engine cylinder and the crankshaft side. A return oil passage for lubricating oil flowing from the upper side of the above cylinder block toward the oil pan is formed in the same cylinder block, and the lubricating oil that is about to fall into the oil pan from the lower end of the return oil passage is removed from the oil pan. In an engine lubricating oil guide device that is provided with a guide body that leads to the bottom of the oil pan, the guide body is formed separately from the oil pan and the baffle plate, and the guide body is attached to either the oil pan or the baffle plate. 6 (Function) At the attached point, the effect of the configuration described in L is as follows. Guide body 36.
37 is formed separately from the oil pan 24 and the bumpy plate 27, and the guide body 36, 37 is attached to either one of the oil pan 24 and the bumpy plate 27. For this reason, cylinder blocks 1 of various shapes are available.
Even if the position of the return oil passages 34, 35 is different for each 2, the guide body 36, 37 can simply be attached to the oil van 24 or the baffle plate 27 in correspondence with the lower ends of the return oil passages 34, 35. It is sufficient. Therefore, it is not necessary to form the oil pan 24 for each cylinder block 12 of various shapes.

(Example) Hereinafter, an example of the present invention will be explained with reference to the drawings. In FIG. 2, l represents the vehicle body, and arrow Fr in the figure indicates the front thereof. Note that for convenience of explanation, this will be described below as the front.

The vehicle body 1 has an engine room 2 at the front thereof. The upper opening of the engine room 2 is closed by a hood 3 so as to be openable and closable, and the engine room 2 and the vehicle compartment 4 are separated by a dash panel 5. Further, 6 is the front wheel.

An engine 8 is provided on the right side of the engine room 2 (referring to the direction in the direction of movement of the vehicle body 1, hereinafter the same shall apply).

In FIGS. 1 and 2, the engine 8 is a parallel four-cylinder four-cycle engine, and its crankcase 9
The crankshaft IO is rotatably supported inside. This crankshaft 10 extends in the vehicle width direction, which means that the engine 8 is of a horizontal type. Four cylinders 1l are integrally arranged in parallel on the crankcase 9, and the crankcase 9 and each cylinder 1l
1 constitutes a cylinder block 12. Also,
A cylinder head 14 is screwed onto the cylinder 11 with bolts 13, and furthermore, this cylinder head 14
A head cover 15 is attached on top. and,
The space between the cylinder head 14 and the head force bar 15 is a cam chamber l7, and an intake and air camshaft l8 and an exhaust camshaft 19 are supported in this cam chamber 17, respectively.
These are connected to the crankshaft 10 by means of belt winding means 20.
is linked to.

Further, 21 is a water pump, and this water bomb 21 is also interlocked and connected to the crankshaft 10 by the belt winding means 20,
This water bomb 21 feeds cooling water into the water jackets 22 and 23 formed on the cylinder block 12 and the cylinder head 14 to cool them. A pan 24 is provided, and this oil pan 2
4 is detachably screwed to the lower end of the cylinder block I2 with a bolt 25. Lubricating oil O is stored in this oil pan 24. In FIGS. 1 to 4, a full plate 27 partitions the bottom part of the oil pan 24 from the crankshaft 10 side.
is provided. This baffle plate 27 is made of iron sheet metal, and has three supporting pieces 28 integrally protruding from its front and rear edges, and the protruding ends of each supporting piece 28 are welded to the front and rear upper opening edges of the oil pan 24. , whereby the baffle plate 27 is supported by the oil pan 24. The upper surface of the baffle plate 27 is an arcuate concave surface to avoid interference with the crankshaft IO and the web 29 of the crankshaft 10, and the upper surface of the baffle plate 27 is connected to the crankshaft IO. Four arcuate recesses 30 are formed to avoid interference with the connected conrod. In the above configuration, a lubricating device is provided for lubricating lubricated parts such as the crankshaft 10, the intake camshaft l8, and each supporting part of the exhaust camshaft 19 with lubricating oil O.

That is, as shown in FIG. 1, a trochoidal hydraulic pump 32 driven by the crankshaft 10 is provided, and this hydraulic pump 32 sucks up the finger oil O in the oil pan 24 through a strainer 33, and at the same time Lubricating oil O is discharged and supplied to each of the above-mentioned parts to be lubricated. In addition, the intake camshaft 18 and the exhaust camshaft 1, which are the lubricated parts,
Front and rear return oil passages 34 and 35 are provided for returning the lubricating oil O supplied to the bearing part 9 from the cam chamber l7 to the oil vane 24. Of these, the front return oil passage 34 is formed along the front wall of the cylinder block l2 and the cylinder head 14, and the rear return oil passage 35 is formed along the rear wall of the cylinder block l2 and the cylinder head 14. The lower ends of the front and rear return oil passages 34 and 35 are both open toward the inside of the oil pan 24. Front and rear guide bodies 36 and 37 are provided to guide the lubricating oil O that is about to fall into the oil pan 24 from the lower ends of the front and rear return oil passages 34 and 35 to the bottom of the oil pan 24, respectively. Each of these guide bodies 36 and 37 is made of sheet metal, and is connected to the oil pan 24.
The main body part 38 is formed separately from the baffle plate 27 and the main body part 38 is approximately C-shaped when viewed from above, and an outer flange 39 is integrally formed on the upper end of the main body part 38. The convex side of each of the main body parts 38 is attached to the front and rear edges of the baffle plate 27 by welding, while the concave side of each of the main body parts 38 faces the front and rear inner surfaces of the oil pan 24. 38 and the front and rear inner surfaces of the oil pan 24 form a guide oil passage 40. A guide oil passage 40 corresponds to each lower end of the front and rear return oil passages 34 and 35, and lubricating oil that is about to fall into the oil van 24 from the lower ends of the front and rear return oil passages 34 and 35. 0 is guided to the bottom of the oil pan 24 by these guide oil passages 40, and is prevented from scattering.

In the above case, the front and rear edges of each body portion 38 are in surface contact with the front and rear inner surfaces of the oil pan 24, and the cross section of the guide oil passage 40 is a closed passage.

Furthermore, by utilizing the fact that each main body part 38 is in contact with the front and rear inner surfaces of the oil pan 24 as described above, the baffle plate 2 has the front and rear guide bodies 36 and 37 welded in advance.
7 to the oil pan 24, each of the above body parts 3
8 is a member for positioning the baffle plate 27 with respect to the oil pan 24. Therefore, this assembly has a simple configuration, and can be done accurately and easily. Incidentally, after the above assembly, the main body portion 38 may be welded to the oil pan 24. Further, the oil pan 24 may be made of aluminum casting. Furthermore, front and rear guide bodies 36.37
may be attached only to the oil pan 24 by welding, etc. By the way, the pressure in the cam chamber 17 tends to become high due to the heat of the engine 8, and when the pressure becomes so high, oil may leak from the joint surface between the cylinder block 12 and the cylinder head 14, etc. For this reason, the front return oil passage 34 and the rear return oil passage 35 function as a breather, that is, the cam chamber 17 is kept inside the crankcase 9 or inside the oil van 24.
They are designed to communicate with each other to allow ventilation between them. In particular, when the engine 8 is installed in a forward tilted state as shown by the two-dot chain line in FIG.
functions especially for returning the lubricating oil O, and in this case, the rear return oil passage 35 is not interfered with by the returning lubricating oil O, and effectively functions as a breather. Contrary to the above, when the engine 8 is installed in a rearward tilted state, as shown by the dashed line in Fig. In this case, the forward return oil passage 34 is not interfered with by the returning lubricating oil O, and effectively functions as a breather. FIG. 5 shows another embodiment of the front and rear guide bodies 36, 37, which consist of a cylindrical main body 38 and an outer flange 39.

FIG. 6 shows yet another embodiment. According to this, a bearing 4l that supports the crankshaft 10 is screwed to the cylinder block 12 side with a bolt 42. And, the baffle plate 27 is the baffle plate 2.
It is attached to the cylinder block l2 side by tightening the bracket 43 protruding from 7 with the bolt 42 mentioned above. Also, this Batsuful plate 27 has 11
11. The rear guide bodies 36 and 37 are welded, and in this case, the upper surface of each outer flange 39 is welded to the buttful plate 27. The other configurations are the same as those in the previous embodiment. (Effects of the Invention) According to the present invention, the guide body is formed separately from the oil pan and the baffle plate, and this guide body is attached to either the oil pan or the baffle plate. Even if the position of the return oil passage is different for each cylinder block of various shapes, it is sufficient to simply attach the guide body to the oil pan or buttful plate in correspondence with the lower end of this return oil passage. Therefore, it is not necessary to form an oil pan for each cylinder block of various shapes, and therefore, it is possible to share the oil pan with cylinder blocks of various shapes.

[Brief explanation of drawings]

The figures show an embodiment of the present invention; FIG. 1 is a partially enlarged cross-sectional view of FIG. 2, FIG. 2 is a schematic side view of the front of the automobile, and FIG. 3 is the III-! of FIG. 1. II is a sectional view taken along the arrows, FIG. 4 is a developed perspective view, FIG. 5 is a perspective view showing another embodiment of the guide body, and FIG. 6 is a part of FIG. 1 showing another embodiment. This is the corresponding diagram. 8. Engine, lO.. Crankshaft, 12.. Cylinder block, 24.. Oil pan, 27. Baffle plate, 34.. Front return oil passage, 35.
... Rearward oil path, 36.. Front guide body, 37.. Rear guide body, 0.. Lubricating oil. 5th Ward Figure 3? 8 Figure 4

Claims (1)

[Claims] 1. An oil pan that covers the bottom side of the cylinder block and a baffle plate that partitions the bottom side of the oil pan and the crankshaft side are provided, and a return for lubricating oil that flows from the top side of the cylinder block toward the oil pan is provided. In the lubricating oil guide device for an engine, an oil passage is formed in the cylinder block, and a guide body is provided to guide lubricating oil that is about to fall into the oil pan from the lower end of the return oil passage to the bottom of the oil pan. A lubricating oil guide device for an engine, in which a guide body is formed separately from an oil pan and a baffle plate, and the guide body is attached to either one of the oil pan and the baffle plate.