JPH0378510A - Lubricating oil path structure of cylinder block - Google Patents

Abstract

PURPOSE:To connect a lubricating oil filter and a lubricating oil cooler on both sides of a cylinder block by forming a joined oil path by tightening an oil path cover to the cylinder block, and joining respective half-split lubricating oil path mutually. CONSTITUTION:A machining face 2a which contacts with a gear case 3 and a machining face 2b which contacts with an oil path cover 1 are formed on a cylinder block 2. In this case, a plural number of semi-lubricating oil path 1a, 1b are formed on the oil path cover 1. The oil path cover 1 is tightened to the cylinder block 2 to join a plural number of semi-lubricating oil path 15, 16 in the cylinder block 2 and each of semi-lubricating oil path 1a, 1b on the oil path cover 1 mutually so that one cylindrical lubricating oil path is formed. Thus, a lubricating oil filter in the cylinder block 2 on the operation side which is not illustrated is mutually connected with a lubricating oil cooler on the non-operation side which is not illustrated.

Description

Detailed Description of the Invention (a) Industrial Application Field The present invention relates to a lubricating oil path for sending lubricating oil accumulated in an oil pan to a main gear rally via a lubricating oil cooler and a lubricating oil filter. It is related to.

(B) Prior Art In conventional engines, the oil path discharged from the lubricating oil pump, passing through the lubricating oil cooler and lubricating oil filter, and reaching the main gear rally was constructed as shown in Figures 5 and 6. be.

FIG. 5 is a diagram showing a conventional technique in which the lubricating oil passage is constructed by a vibrator, and FIG. 6 is a diagram showing a conventional technique in which the oil passage is similarly constructed by a drilled opening oil passage.

First, in the conventional technique shown in FIG.

There is a suction filter 17 inside the oil pan 8, and the lubricating oil sucked from the suction filter 17 is discharged from the lubricating oil pump 7, and is sent from the lubricating oil vibrator 21 to the perforated oil passage 36 of the cylinder block 2 and to the lubricating oil vibrator 24. The lubricating oil is supplied to the lubricating oil cooler 4 through the lubricating oil cooler 4.

The lubricating oil cooled by the lubricating oil cooler 4 is sent through the lubricating oil vibrators 23 and 22, and further into the lubricating oil filter 5 from the drilled oil passage through the vibrator 25 on the control surface side. The lubricating oil that has been filtered by the lubricating oil filter 5 is sent from the vibrator 26 to the main gear rally 6 through a drilled oil passage and a pipe 35.

After lubricating the camshaft and cam from the main gear rally 6 and lubricating the inside of the cylinder, the lubricating oil is discharged into the cylinder block 2 and returns to the oil pan 8 again.

In this way, conventionally, when the lubricating oil filter 5 was placed on the control surface side of the engine and the lubricating oil cooler 4 and main gear rally 6 were placed on the non-controlling surface side, the lubricating oil from the lubricating oil pump 7 was disposed. It requires a lot of lubricant vibrator to move it back and forth.

If there are a large number of lubricating oil pipes as described above, assembly and disassembly will be difficult, and the pipes themselves will be easily damaged.

Furthermore, since the lubricating oil pipe is easily damaged, in order to solve this problem, the conventional technique shown in FIG. 6 is a technique in which the lubricating oil passage is opened as an oil passage bored in the thick part of the cylinder block 2.

However, in this way, two oil passages 27 and 28 are drilled into the thick wall part of the cylinder block 2 through which lubricating oil flows back and forth.
In order to be able to open the cylinder block 2, it is necessary to provide a sufficiently thick part on the end face of the cylinder block 2, and as shown in FIG. becomes large.

In addition, since the drilled oil passages 27 and 28 are opened by a drill, only straight oil passages can be made, and the lubricating oil filter 5 on the operating side of the engine, the lubricating oil cooler 4 on the non-operating side of the engine, and the main gear If the positional relationship of the rally 6 is shifted vertically, it becomes impossible to open the oil passages 27 and 28 in a straight line.

(c) Problems to be Solved by the Invention The present invention is intended to solve the problems that occur in the prior art as described above.

That is, by casting a half-split lubricating oil passage on the side of the cylinder block 2 and covering this with the oil passage cover 1, which also has a half-split lubricating oil passage molded on the inside, the abutting surface of the gear case 3 is improved. 2a and the abutting surface 2b of the oil passage cover 1 can be configured to be on the same plane, making it possible to have a configuration that is easy to process and assemble.

(d) Means for Solving the Problems The object and structure of the present invention are as described above. Next, the structure for achieving the object will be explained.

An oil passage cover 1 having a half lubricating oil passage formed on the end face of the cylinder block and another half lubricating oil passage formed on the inner surface covering the half lubricating oil passage to form a cylindrical oil passage is attached to the cylinder block. 2
A lubricating oil filter provided on the operating side of the cylinder block and a lubricating oil cooler provided on the non-operating side of the cylinder block are connected by a combined oil passage formed by both halves of the lubricating oil passage.

In addition, in the cylinder block, the abutment machined surface for abutting the gear case and the abutment machined surface for attaching the oil passage cover are made to be the same plane, and the oil passage cover is placed inside the gear case. It is coated.

(E) Embodiment The object and structure of the present invention are as described above. Next, the structure of the embodiment shown in the attached drawings will be explained.

Fig. 1 is a side view showing the lubricating oil passage of the cylinder block of the present invention, Fig. 2 is a side view of the side of the cylinder block 2 with the gear case 3 removed, and Fig. 3 is A-A in Fig. 2.
FIG. 4 is a cross-sectional view taken along line B--B in FIG. 2.

The overall configuration will be explained with reference to FIG.

A charge air cooler 9 and a lubricating oil filter 5 are provided on the front surface of a cylinder block 2 constituting the main part of the engine, and an exhaust manifold 10 and a lubricating oil cooler 4 are provided on the rear surface of the cylinder block 2.

On the front side of the cylinder block 2, operating parts such as the aircraft side control device are concentrated to form the control side, and on the rear side of the cylinder block 2, parts that do not require much inspection and operation are placed and constitute the non-control side. It is said that

In particular, the lubricating oil filter 5 needs to be replaced at regular operating hours in order to clean the inside of the engine from clogging and dirt, and it needs to be placed on the control side.

Therefore, when the lubricating oil in the oil pan 8 is sucked through the suction filter 17 and discharged from the lubricating oil pump 7, the oil is first sent to the lubricating oil cooler 4 on the non-operating side, and then to the lubricating oil cooler 4 on the non-operating side. 4 to the lubricating oil filter 5 on the control side, and further, in this embodiment, to the main gear rally 6 on the non-control side, and then to each lubricating section.

As described above, it is necessary for the lubricating oil passage to reciprocate on the end face side of the cylinder block 2, and if this reciprocating oil passage is constituted by a lubricating oil pipe as in the prior art, there are many problems.

In the present invention, an oil pipe is not used as much as possible, and the oil passage is constructed by a matching oil passage in a thick walled portion of the cylinder block 2.

In particular, the lubricating oil cooler 4 has a mounting portion 4a to the cylinder block 2, and the lubricating oil filter 5 is attached to the cylinder block 2.
If the mounting part 5a and the main gear lary 6 are vertically misaligned, and it is not possible to drill a straight oil passage using a drill, an integrated oil passage can be used to eliminate the curved oil passage. This is effective because it allows you to construct a road.

This will be explained in detail with reference to FIGS. 2, 3, and 4.

The lubricating oil is sent from the lubricating oil pump 7 to the lubricating oil cooler 4, and the lubricating oil that has passed through the lubricating oil cooler 4 passes through the mounting part 4a of the lubricating oil cooler 4, and is transferred to the drilling oil formed by casting in the cylinder block 2. From the passage 13, the lubricating oil comes out into a half lubricating oil passage 16 formed on the side surface of the thick walled portion of the cylinder block 2. The half lubricating oil passage 16 is formed into a single cylindrical oil passage by closely contacting the half lubricating oil passage 1b formed in the oil passage cover 1.

Then, the lubricating oil is sent through the half-split lubricating oil passage 16 and the perforated oil passage 14 on the control side of the cylinder block 2 to the oil passage of the mounting portion 5a of the lubricating oil filter 5, and is filtered in the lubricating oil filter 5. Ru.

The lubricating oil after filtration passes through the drilled oil passage 12 on the control side of the cylinder block 2 again, and comes out from the drilled oil passage 12 into the half-split lubricating oil passage 15 provided on the end face of the cylinder block 2.

The half-split lubricating oil passage 15 is formed by closely joining the half lubricating oil passages 1a provided in the oil passage cover 1 to form one cylindrical lubricating oil passage. The lubricating oil is communicated from the half-split lubricating oil passage 15 to the main gear rally 6 via the perforated oil passage 11 on the non-control side of the cylinder block 2.

Further, as shown in FIGS. 3 and 4, there is an abutting surface 2a for the gear case 3 attached to the side surface of the cylinder block 2, and an abutting surface 2b for joining the oil passage cover 1.
They are constructed on the same plane, allowing for plane cutting in one step during machining.

(F) Effects of the Invention Since the present invention is constructed as described above, it has the following effects.

By configuring as claimed in claim (1), the lubricating oil cooler 4, which is relatively large, is placed on the non-control side, and the lubricating oil filter 5, which requires inspection, repair and replacement, is placed on the control side. If a filter part needs to be replaced, such as the lubricating oil filter 5, it can be easily replaced.

Furthermore, if the lubricating oil pipe is arranged reciprocatingly on the side surface of the cylinder block 2 as in the conventional technology, the pipe is likely to be damaged, but it is possible to construct it with a drilled oil passage and a combined oil passage as in the present invention. This made it possible to improve the reliability of the lubricant oil path.

In addition, the half-split lubricating oil passage opened on the thick side of the cylinder block 2 and the half-split lubricating oil passage opened on the inner surface of the oil passage cover 1 are combined to form a cylindrical oil passage, making it relatively compact. This made it possible to construct a reliable oil path.

By configuring as claimed in claim (2), the gear case 3
At the same time as machining the surface of the abutment machined surface 2a that comes into close contact with
Since side b can be processed at the same time, it is possible to consolidate the processing steps and reduce costs.

In addition, since the lubricating oil passage can be placed inside the gear case 3, even if oil leaks from the lubricating oil passage, it can be caught by the gear case 3, improving oil tightness accuracy. This has the effect that there is no need to do so.

[Brief explanation of drawings]

Fig. 1 is a side view showing the lubricating oil passage of the cylinder block of the present invention, Fig. 2 is a side view of the side of the cylinder block 2 with the gear case 3 removed, and Fig. 3 is A-A in Fig. 2.
A cross-sectional view taken along the arrow line, FIG. 4 is a cross-sectional view taken along the line B-B in FIG.
This figure shows a conventional technique in which the lubricating oil passage is constructed from a pipe, and FIG. 6 is a diagram showing a conventional technique in which the oil passage is similarly constituted by a drilled opening oil passage. 1... Oil passage cover la, lb... Half lubricating oil passage 2... Cylinder block 2a, 2b... Contact processing surface 3... Gear case 4... Lubricating oil Cooler 5... Lubricating oil filter 6... Main gear rally 7... Lubricating oil pump 8... Oil pan

Claims (2)

[Claims] (1) Oil passage cover 1 in which a half lubricating oil passage is formed on the end face of the cylinder block, and another half lubricating oil passage is formed on the inner surface to cover the half lubricating oil passage and form a cylindrical oil passage. is attached to the end face of the cylinder block 2, and the lubricating oil filter provided on the operating side of the cylinder block and the lubricating oil cooler provided on the non-operating side are connected by a combined oil passage formed by both halves of the lubricating oil passage. The lubricating oil passage structure of the cylinder block is characterized by: (2) In the cylinder block according to claim (1), the abutting surface for abutting the gear case and the abutting surface for attaching the oil passage cover are made on the same plane, and the oil passage cover is attached to the gear. A lubricating oil passage structure for a cylinder block characterized by being placed inside a case and covered by a gear case.