JPH0842320A - Lubrication system for engines with increased oil pan - Google Patents

Abstract

(57) [Summary] [Purpose] To improve the tilt performance of an engine with an increased oil pan. [Structure] An increasing oil pan 2 is fixed to a lower side of an oil pan 1 of an engine E, and a thick wall portion 10 of the increasing oil pan 2 is provided so as to face the upper oil pan 1, and the thick wall portion 10 is provided.
The oil absorption path 6 is arranged in the
Through the inlet 11 of the oil suction passage 6. Since the oil strainer 3 can be arranged in the central portion in the front-rear direction and the left-right direction in the increased oil pan 2 depending on the piping configuration of the oil absorption pipe 12, the oil strainer 3 can be installed even if the engine E is inclined in the front-rear direction or the right direction. Can be held below the oil level of the increased oil pan 2,
The tilting performance of the engine E can be improved.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lubricating device for an engine provided with an increasing oil pan, which provides a large degree of freedom in arranging an oil strainer in the increasing oil pan and can enhance the tilting performance of the engine.

[0002]

BACKGROUND OF THE INVENTION Generally, when it is desired to continuously operate an engine without oil change for a relatively long time, an additional oil pan is often provided below the oil pan of the engine.

The object of the present invention is a lubricating device for an engine with this increased oil pan, the basic structure of which is shown in FIG. 1, FIG. 3, FIG. 4, FIG. 5, FIG. 7 or FIG. Fix the increased oil pan 2 under the oil pan 1,
The oil pan 1 and the increased oil pan 2 are communicated with each other through the return port 4,
An oil strainer 3 is arranged in the increased oil pan 2, an oil absorption path 6 is provided through a meat wall 5 of the increased oil pan 2, and the oil strainer 3 is communicated with the lubrication pump 8 via the oil absorption path 6. .

[0004]

2. Description of the Related Art As a conventional technology of this type,
As shown in Japanese Patent Laid-Open No. 3-57310 (see FIG. 8), an oil absorption path 6 is arranged on the front side wall 5 of the increased oil pan 2 of the horizontal engine E, and a cylindrical shape is formed from the front side wall 5 into a space inside the oil pan 2. In some cases, the oil strainer 3 is fitted and fixed in a protruding shape, and the suction port 13 of the oil strainer 3 is communicated with the oil suction passage 6.

[0005]

In the above-mentioned prior art, since the oil strainer 3 is fixedly arranged on the front side wall 5 of the increased oil pan 2, for example, the front portion is inclined upward and the rear portion is inclined downward and rearward. When the engine E is mounted on a ship and used in the above condition, the suction port 13 of the oil strainer 3
May come out on the oil surface of the increased oil pan 2 and suck air. An object of the present invention is to improve the tilt performance of an engine with an increased oil pan.

[0006]

Means for achieving the above object will be described below with reference to FIGS. 1 to 7 showing an embodiment. That is, according to the present invention, in the lubricating device for an engine with an increasing oil pan having the basic structure, the thick wall portion 10 of the increasing oil pan 2 is provided so as to face the upper oil pan 1.
The oil absorption passage 6 is arranged in the meat wall portion 10, and the oil strainer 3 is communicated with the inlet 11 of the oil absorption passage 6 via the oil absorption pipe 12.

[0007]

Since the oil strainer 3 is communicated with the inlet 11 of the oil absorption passage 6 arranged in the thick portion 10 of the increasing oil pan 2 through the oil absorbing pipe 12, the oil strainer 3 is increased in amount by the piping mode of the oil absorbing pipe 12. It can be easily placed in the center of the bread 2 in the front-back and left-right directions. Therefore, even if the engine E is tilted in the front-rear direction or the left-right direction,
The oil strainer 3 can be kept in a state of being submerged below the oil surface of the increased oil pan 2, and there is no fear that the oil supply port of the oil strainer 3 will suck air.

[0008]

Since the oil strainer communicates with the inlet of the oil absorption passage arranged in the thick portion of the increasing oil pan through the oil absorbing pipe, the oil strainer is connected to the front, rear, left and right inside the increasing oil pan by the piping mode of the oil absorbing pipe. Since the oil strainer can be arranged in the central portion of the direction, the degree of freedom in arranging the oil strainer is greatly improved. Therefore, regardless of whether the engine tilts in the front-rear direction or the left-right direction, the oil strainer can be kept in a state of being submerged below the oil level of the increased oil pan, and the tilting performance of the engine can be enhanced.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a right side view of a longitudinal section of a lubricating device of a diesel engine with an oil pan, and FIG. 2 is a front view of the horizontal diesel engine.

As shown in FIG. 1, the increasing oil pan 2 is detachably fixed to the lower side of the oil pan 1 of the horizontal diesel engine E through fastening bolts 19, and the oil pan 1 and the increasing oil pan 2 are returned to the return port. Connect with 4 and increase oil pan 2
An oil strainer 3 having a triangular pyramid shape is disposed in the oil suction passage 6, an oil absorption path 6 is provided through the meat wall 5 of the increased oil pan 2, and the oil strainer 3 is connected to the lubrication pump 8 via the oil absorption path 6.

Further, as shown in FIGS. 1 and 2, the discharge oil passage 7 of the lubrication pump 8 is communicated with a lubrication portion 14 such as a crank shaft or a fuel injection cam shaft so that the increasing oil pan 2 and the oil pan 1 are connected. The stored oil is transferred to the oil strainer 3 and the oil absorption path 6
The lubrication pump 8 pumps the oil through the discharge oil passage 7 to force each lubrication part 14 to be forcibly lubricated, and the oil that lubricates each lubrication part 14 is supplied to the oil pan 1 and the return port 4. After that, the oil can be returned to the increased oil pan 2.

Therefore, the oil absorption mechanism of the lubricating device will be described in detail. As shown in FIG. 1, the front side wall 5 of the increased oil pan 2 is shown.
Of the thick part 10 in the upper part of the oil pan 1 facing the oil pan 1.
Is formed, and the oil absorption path 6 is provided through the meat wall portion 10 in a bent shape.

That is, as shown in FIG. 1, the thickened portion 10 of the increased oil pan 2 penetrates the lateral oil absorption passage 6a in the front-rear direction, and the thickened portion 10 and the front side wall 15 of the oil pan 1 above it. The vertical oil absorption passage 6b is vertically penetrated through and the vertical oil absorption passage 6b communicates with the horizontal oil absorption passage 6a in an orthogonal manner to form the entire oil absorption passage 6. Then, the lateral oil absorption path 6
The opening on the front end side of a is fitted and sealed by a sealing plug 16, and the inlet 11 on the rear end side of the lateral oil absorption passage 6a is communicated with the outlet 17 of the oil strainer 3 via the oil absorption pipe 12 to form an oil strainer. 3 are arranged in the front, rear, left and right substantially central portions of the increased oil pan 2.

The function of the lubricating device for the horizontal diesel engine with the increased oil pan according to the first embodiment will be described.
The oil strainer 3 is inserted through the oil absorption pipe 12 into the inlet 11 of the oil absorption passage 6 opened in the thick portion 10 on the front side of the increased oil pan 2.
Since the oil suction pipe 6 is extended or the pipe shape of the oil suction pipe 12 is changed such as by changing the pipe shape, the oil strainer 3 is increased or decreased in the oil pan 2 before or after the oil strainer 3 is expanded.
The oil strainer 3 can be easily arranged in the central portion in the left-right direction, and the degree of freedom in the arrangement of the oil strainer 3 can be increased. For this reason,
Whether the diesel engine E leans in the front-rear direction or the left-right direction, the oil strainer 3 can be held in a state of being submerged below the oil level of the increased oil pan 2, and the tilting performance of the engine E can be enhanced.

Further, in the first embodiment, the increased oil pan 2
Since the inlet 11 of the oil absorption path 6 is opened on the lateral side surface of the thick portion 10, the processing of the opening surface 18 is facilitated, and the oil absorption pipe 12 can be easily attached to the oil absorption path inlet 11 from the lateral side.

FIG. 3 shows a second embodiment of the present invention. Based on the first embodiment, an oil absorption path 6 is vertically formed through a thick wall portion 10 on the front side of the increasing oil pan 2 to form a thick wall portion. An inlet 11 of the oil absorption passage 10 is opened on a lower side surface 21 of the lower side surface 1
The oil absorption pipe 12 is connected to 0 from the lower side.

That is, in the second embodiment, as shown in FIG. 3, by disposing the oil strainer 3 on the front side of the increased oil pan 2, for example, the diesel engine E can be mounted on a ship or a working machine in a forward downward slope. Even when it is installed and used,
Hold the suction port 13 of the oil strainer 3 below the oil level,
Smooth lubrication performance can be secured. However, when used in a horizontal state, the oil suction pipe 12 may be extended to set the oil strainer 3 in the central portion of the increased oil pan 2. Further, in the second embodiment, unlike the first embodiment in which the oil absorption passages 6 are formed by combining orthogonal passages, the oil absorption passages 6 can be formed in a straight line shape, which facilitates processing.

FIG. 4 shows a third embodiment of the present invention, in which a thick portion 10 is formed on the left side wall 5 in place of the front side wall of the increasing oil pan 2 (see FIG. 4A), and a straight line is formed on the thick portion 10. Oil absorption path 6
Is vertically penetrated and the oil absorption pipe 12 is connected to the inlet 11 of the oil absorption passage 6 from the lower side. In the third embodiment, as shown in FIG.
As shown in B, unlike the first and second embodiments, the oil absorption path 6
Since the position of the thick wall portion 10 penetrating the portion of the oil absorption pipe 12 is moved from the front side wall of the increased oil pan 2 to the rear side, as compared with the first or second embodiment in which the thick wall portion 10 is provided on the front side, The degree of freedom in the arrangement of the oil strainer 3 can be secured while making the arrangement mode easier.

In the first and second embodiments, the bottom wall 22 of the oil pan 1 divides the oil pan 1 and the increased oil pan 2 therebelow. With the bottom wall omitted, the rectangular lower end peripheral surface 1a of the oil pan 1 is increased to the rectangular upper end peripheral surface 2 of the oil pan 2.
It is configured to be in close contact with a through the sealing sheet 23. Therefore, the entire inside of the both peripheral surfaces 1a and 2a serves as the return port 4 that connects the oil pans 1 and 2.

FIG. 5 shows a fourth embodiment of the present invention, which is a modification of the third embodiment described above, in which the thick wall portion 10 penetrating the oil absorption passage 6 is provided.
Is moved to the central portion of the increased oil pan 2 in the front-rear direction. As a result, the oil strainer 3 can be more easily arranged in the central portion of the increased oil strainer 2 as compared with the first to third embodiments.

In the fourth embodiment, as shown in FIG. 5, the bottom wall 2 of the oil pan 1 is the same as in the first and second embodiments.
Although the oil pan 1 and the increased oil pan 2 are partitioned by 2, the return holes 4 are opened in the oil pan bottom wall 22 in front of and behind the bottom wall 22 with the oil absorption path 6 sandwiched therebetween. That is, since the two return ports 4 are provided in front of and behind the increased oil pan 2, the oil can freely exchange between the oil pan 1 and the increased oil pan 2 regardless of whether the engine E is inclined forward or backward.

In the first to third embodiments, the increasing oil pan 2 has a lower bulge in which the lower portion bulges from the upper portion, but in the fourth embodiment, the lower portion of the increasing oil pan 2 does not bulge. .
Therefore, the bulging portion does not limit the operation space of the operation tool for tightening the fastening bolt 19, and the fastening bolt 19 can be easily tightened.

6 and 7 show Embodiment 5 of the present invention,
The bottom wall 2 of the oil pan 1 is based on the above fourth embodiment.
One return port 4 is opened at the rear part of the oil tank 2, and the oil strainer 3 is arranged in a deflected manner in front of the increased oil pan 2.

In the fifth embodiment, as shown in FIG. 6, since the oil strainer 3 is arranged in front of the increased oil pan 2, the diesel engine E is mounted on a ship or a working machine in a downward slope. In case, oil strainer 3
It is possible to maintain a smooth lubrication performance by keeping the suction port 13 of the submersion 13 below the oil surface 24. Also, oil strainer 1
The return port 4 of the bottom wall 22 may have a circular opening as shown by the solid line in FIG. 7, but may have a square opening as shown by the phantom line in FIG. 7.

The present invention can be applied not only to the diesel engine as in the above embodiment but also to a spark ignition engine. Also, the cylinder is not limited to a horizontal engine with a horizontal orientation,
It can also be applied to a vertical engine with a vertical cylinder.

[Brief description of drawings]

FIG. 1 is a right side vertical cross-sectional view of a main part of a lubricating device for a diesel engine with an oil pan showing a first embodiment of the present invention.

FIG. 2 is a front view of the horizontal diesel engine.

FIG. 3 is a view corresponding to FIG. 1 showing a second embodiment of the present invention.

4 shows Embodiment 3 of the present invention, FIG. 4A is a plan view of an increased oil pan, and FIG. 4B is a sectional view taken along line 4A-4A of FIG. 4A.

FIG. 5 is a view equivalent to FIG. 1 showing a fourth embodiment of the present invention.

FIG. 6 is a view corresponding to FIG. 1, showing a fifth embodiment of the present invention.

FIG. 7 is a bottom view of the oil pan showing the fifth embodiment.

FIG. 8 is a view equivalent to FIG. 1 showing a conventional technique.

[Explanation of symbols]

1 ... Oil pan, 2 ... Increasing oil pan, 3 ... Oil strainer, 4 ... Return port, 5 ... Meat wall of increasing oil strainer, 6 ... Oil absorption path, 7 ... Discharge oil path, 8 ... Lubrication pump, 10
… Thickened portion of increasing oil strainer, 11… Inlet of oil absorption passage, 12… Oil absorption pipe, E… Engine.

Claims (1)

[Claims] 1. An increasing oil pan (2) is fixed to a lower side of an oil pan (1) of an engine (E), and the oil pan (1) and the increasing oil pan (2) communicate with each other through a return port (4). , Increased oil pan
Place the oil strainer (3) in (2) and increase the oil pan
A lubricating device for an engine with an increased oil pan in which an oil absorption path (6) is provided through the meat wall (5) of (2) and an oil strainer (3) is communicated with a lubrication pump (8) through the oil absorption path (6). In the above, the thick wall portion (5) of the increasing oil pan (2) is provided with the thick portion (10) facing the upper oil pan (1), and the oil absorption path (6) is provided on the thick wall portion (10). Place the oil strainer (3) on the oil absorption pipe
A lubricating device for an engine with an increasing oil pan, which communicates with an inlet (11) of the oil suction passage (6) through (12).