JP2000161039A - Lubricating oil purifying device for engine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce assembling processes of parts, and simplify manufacture of an engine by disposing a centrifugal separator attaching seat on a position where an un-purified oil passage is formed, arranging an un-purified oil leading-out passage and a purifying oil leading-in passage, and directly attaching a centrifugal separator on the centrifugal separator attaching seat of an engine side wall. SOLUTION: A centrifugal separator attaching seat 4 is disposed on a position 3 where an un-purified oil passage 2 of a crank chamber side wall 1 is formed. An un-purified oil leading-out passage 5 and a purifying oil leading-in passage 7 are arranged on the centrifugal separator attaching seat 4, the un-purified oil leading-out passage 5 is branched from the un-purified oil passage 2, and the purifying oil leading-in passage 7 is communicated with an oil pan through a crank chamber. An outlet 9 of the un-purified oil leading-out passage 5 and an inlet 16 of the un-purified oil leading-in passage 13 are matched with each other, and an outlet 17 of the purifying oil leading-out passage 14 and an inlet 10 of the purifying oil leading-in passage 7 are matched with each other, in association with the case in which an attached surface 15 in a base part 12 of the centrifugal separator 11 is directly attached on an attaching seat surface 8 of the attaching seat 4.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for purifying a lubricating oil of an engine, and more particularly, to a device capable of directly attaching a centrifugal separator to a side wall of a crankcase.

[0002]

2. Description of the Related Art Conventionally, an engine lubricating oil purifying apparatus has a centrifugal separator. In conventional equipment,
The centrifugal separator is mounted on the crankcase wall separately from the crankcase wall via a mounting stay. The centrifuge is connected to the oil gallery by an unpurified oil pipe, and communicates with the oil pan by a purified oil pipe.

[0003]

In the above-mentioned conventional apparatus,
There are the following problems: Since attachment parts such as mounting stays and pipes are required, the number of parts is large. For this reason, there are many assembling steps of parts at the time of engine production, and it takes time to manufacture the engine. Also, parts management is complicated.

[0004] Since the centrifugal separator is far from the crankcase wall, the width of the engine becomes large and it is difficult to make the engine compact.

An object of the present invention is to provide a device for purifying a lubricating oil for an engine, which can solve the above problems.

[0006]

The structure of the first aspect of the present invention is as follows. As shown in FIGS. 1 to 3, an engine lubricating oil purifying apparatus provided with a centrifugal separator (11) is characterized as follows.

As shown in FIG. 1A, a centrifuge mounting seat is provided.
(4), and as shown in FIG.
(4) The lubricating oil pump (2) in the crankcase side wall (1)
The unpurified oil passage (2) extending from 5) to the lubricating oil filter mounting seat (27) is arranged at the place (3) where the unpurified oil passage (2) is formed. As shown in FIG. Seat (4)
Has an unpurified oil outlet passage (5) and a purified oil introduction passage (7). The unpurified oil outlet passage (5) branches from the unpurified oil passage (2) and is connected to the purified oil inlet passage (7). ) Communicates with the oil pan (6) through the crank chamber (1a),
The mounting seat surface (8) of (4) is the outlet of the unpurified oil outlet passage (5).
(9) and an inlet (10) of the purified oil introduction passage (7).

As shown in FIG. 1A, a centrifuge (11)
The base (12) has an unpurified oil introduction passage (13) and a purified oil outlet passage (14), and the mounting surface (15) of the base (12)
Has an inlet (16) of the unpurified oil introduction passage (13) and an outlet (17) of the purified oil outlet passage (14).

As shown in FIG. 1A, the mounting seat surface (8)
When the above-mentioned mounting surface (15) is attached, the outlet (9) of the unpurified oil outlet passage (5) and the inlet of the unpurified oil introduction passage (13) are provided.
(16) and the outlet (17) of the purification oil outlet passage (14) and the inlet (10) of the purification oil introduction passage (7).

[0010]

Operation and Effect of the Invention (Invention of claim 1) The invention of claim 1 has the following operation and effects. As shown in FIG.
Centrifuge on the centrifuge mounting seat (4) on the engine side wall (1)
Since (11) can be directly attached, there are the following advantages. Attached parts such as mounting stays and pipes become unnecessary,
The number of parts can be reduced. For this reason, the number of assembling steps of parts during engine production can be reduced, and engine production can be simplified. Also, parts management is simplified.

As shown in FIG. 1A, a centrifuge (11)
Is closely attached to the engine side wall (1), so that the width of the engine can be reduced and the engine can be made more compact.

As shown in FIG. 1A, a centrifuge mounting seat is provided.
(4) is disposed at the position (3) where the unpurified oil passage (2) is formed, and the unpurified oil outlet passage (5) is branched from the unpurified oil passage (2). The purification oil passage (2) can be made short and simple.

(Invention of claim 2) The invention of claim 2 has the following operation and effect in addition to the operation and effect of the invention of claim 1.
As shown in FIG. 3, the lubricating oil filter (18) is located on the left or right side of the engine where the centrifuge (11) is disposed.
The following advantages are provided. Centrifuge
Since the maintenance of (11) and the lubricating oil filter (18) can be performed on the same side, the maintenance work on the lubricating oil is simplified. Also, at the time of engine production, the work of assembling these parts is simplified.

(Invention of claim 3) The invention of claim 3 has the following operation and effect in addition to the operation and effect of the invention of claim 1 or 2. As shown in FIG. 3, the centrifuge (11)
Is the fuel injection pump (19)
Is arranged on the side where is arranged, there are the following advantages. Since the centrifuge (11) and the fuel injection pump (19) can be maintained on the same side, the maintenance work of these parts is simplified. Also, at the time of engine production, the work of assembling these parts is simplified.

(Invention of claim 4) The invention of claim 4 has the following effect in addition to the effect of the invention of claim 3.
As shown in FIG. 3, since the centrifugal separator (11) is arranged in the space (20) below the fuel injection pump (19), there are the following advantages. Since the space (20) below the fuel injection pump (19), which is originally a dead space, can be effectively used as a space for disposing the centrifuge (11), the engine can be made compact.

(Invention of claim 5) The invention of claim 5 has the following operation and effect in addition to the operation and effect of any one of claims 1 to 4. As shown in FIG. 1 (A), the centrifuge (1)
The rotor (29) of 1) includes a cup (31) and a lid (32), and the lid (32) is detachably mounted on the cup (31). Remove the lid (32) and remove the cup (3
If the sludge in 1) is removed, the rotor 29 can be reused, which is economical.

[0017]

Embodiments of the present invention will be described with reference to the drawings. 1 to 3 are diagrams for explaining an embodiment of the present invention. In this embodiment, a multi-cylinder vertical diesel engine is used.

The structure of this engine is as follows.
As shown in FIG. 3, a cylinder head (22) is mounted on an upper portion of a cylinder block (21),
An oil pan (6) is attached to the lower part of (21).
A gear case (23) is mounted on the front of the cylinder block (21), and a cooling fan (2) is mounted on the front of the gear case (23).
4) is provided. This engine includes a lubricant supply device and a lubricant purification device. The lubricating oil purification device includes a centrifuge (11). Centrifuge (11)
Is the lubricating oil filter (18)
And a fuel injection pump (19). The centrifuge (11) is a fuel injection pump.
It is arranged in the lower space (20) of (19).

The lubricating oil supply device supplies the lubricating oil of the oil pan (6) to a sliding portion such as a crankshaft or a bearing portion of a valve gear.
(Not shown) and includes a lubricating oil pump (25) and an oil gallery. The lubricating oil pump (25) is arranged in the gear case (23) and is driven by a crankshaft.
The lubricating oil inlet of the lubricating oil pump (25) is constituted by a strainer (26) and is immersed in the lubricating oil of the oil pan (6).
The oil gallery includes an unpurified oil passage (2) from the lubricating oil pump (25) to the lubricating oil filter mounting seat (27), and a purified oil passage from the lubricating oil filter mounting seat (27) to a sliding portion. . The unpurified oil passage (2) is formed in the wall of the crankcase side wall (1) and is directed in the front-rear direction. When the lubricating oil filter (18) is mounted on the lubricating oil filter mounting seat (27), the unpurified oil passage is passed through the lubricating oil filter (18).
(2) communicates with the purified oil passage.

The lubricating oil purifier is a device for removing sludge of lubricating oil, and includes a lubricating oil filter mounting seat (27),
It includes a lubricating oil filter (18), a centrifuge mounting seat (4), and a centrifuge (11).

The lubricating oil filter mounting seat (27) has an outlet (33) for the unpurified oil passage (2) and an inlet (34) for the purified oil passage. The outlet (33) and the inlet (34) communicate with a lubricating oil filter (18) detachably attached to a lubricating oil filter mounting seat (27).

The centrifuge mounting seat (4) is located on the side wall of the crankcase.
In (1), it is arranged at the position (3) where the unpurified oil passage (2) is formed, and is arranged at a position closer to the lubricating oil pump (25) than the lubricating oil filter mounting seat (27). As shown in FIG. 1 (A), the centrifuge mounting seat (4) includes an unpurified oil outlet passage (5) and a purified oil introduction passage (7). The unpurified oil outlet passage (5) branches from the unpurified oil passage (5). The purified oil introduction passage (7) communicates with the oil pan (6) via the crank chamber (1a). Mounting seat surface (8) of this mounting seat (4)
Are the outlet (9) of the unpurified oil outlet passage (5) and the purified oil introduction passage
(7) entrance (10).

The centrifuge (11) is a device for removing the sludge of the lubricating oil by centrifugal separation.
(28), a case (30) and a rotor (29).

The base (12) is made of a casting and has an unpurified oil introduction passage (13) and a purified oil outlet passage (14). This base
The mounting surface (15) of (12) has an inlet (16) of the unpurified oil introduction passage (13) and an outlet (17) of the purified oil outlet passage (14). As shown in FIG. 2, the mounting surface (15) is a flange.
(45), and the flange (45) is attached to the mounting bolt (46).
To removably fix to the centrifuge mounting seat (4).

As shown in FIG. 1 (A), the pivot (28) has a lubricating oil floating passage (41) at the center and an outlet at the peripheral side wall.
(42). The pivot (28) is detachably mounted on the base (12), and the lubricating oil floating passage (41) is an unpurified oil introduction passage.
Communicate with (13). The case (30) is detachably attached to the base (12) and covers the rotor (29) together with the base (12). The case (30) is a cap nut screwed onto the pivot (28).
It is fixed to the base (12) with the fastening force of (43).

The rotor (29) comprises a cup (31) and a lid (32).
And a sleeve (35) and a nut (36). Cup (3
1) has an opening in the lower part, and a lid (32) is removably fitted in this opening. The sleeve (35) has a flange (37) at the lower part, a male screw part (38) at the upper part, and a lubricating oil passage (39) on the peripheral wall. The sleeve (35) passes through the bottom plate (32) and the center of the cup (31), and
(35) contacts the lid (32) from below, and the lubricating oil passage
(39) is the outlet (42) of the lubricating oil floating passage (41) and the rotor
The interior space of (29) is communicated. The nut (36) is screwed into the male screw portion (38), and the fastening force of the nut (36)
The lid (32) is fixed to the opening of the cup (31). Lid (32)
Is a disc made of a casting, provided with a pair of lubricating oil outlets (40), and as shown in FIG.
(40) is oriented tangentially to a circle about the pivot (28). As shown in FIG. 1A, the pair of lubricating oil outlets (40) communicate with an injection oil introduction passage (44) facing the center of the cup (31).

When the mounting surface (15) is mounted on the mounting seat surface (8), the outlet (9) of the unpurified oil outlet passage (5) and the inlet (16) of the unpurified oil introduction passage (13) are connected. Are matched,
The outlet (17) of the purification oil outlet passage (14) and the purification oil introduction passage
The entrance (10) of (7) matches.

The function of the centrifuge (11) is as follows. When the lubricating oil in the oil pan (6) passes through the unpurified oil passage (2) by the pumping force of the lubricating oil pump (25), a part of the lubricating oil is distributed to the unpurified oil outlet passage (5). Sink, unpurified oil introduction passage (13), lubricating oil floating passage (41), outlet
(42), passing through the lubricating oil passage (39) in order,
(29) and jets out from the lubricating oil jet (40).
With this injection power, the rotor (29) rotates. Rotor (29)
Rotates, the sludge having a large specific gravity is removed from the rotor (29).
Is separated toward the peripheral wall and solidified on the peripheral wall. Purified oil is ejected from the center of the rotor (29) through a fuel ejection port (40). The spouted purified oil is under its own weight, and the purified oil outlet passage
(14) After returning to the oil pan (6) via the purified oil introduction passage (7) and the inside of the crank chamber (1a).

If a large amount of sludge has accumulated on the peripheral wall of the rotor (29), remove the case (30) from the base (12),
Withdraw the rotor (29) from the pivot (28) and place the cup (31)
Then, the lid (32) is removed, and the solidified sludge is removed. Then, the rotor (29) is reused.

[Brief description of the drawings]

FIG. 1 is a view for explaining an engine according to an embodiment of the present invention. FIG. 1 (A) is a longitudinal sectional view of a lubricating oil purification device, and FIG. 1 (B) is a sectional view taken along line BB of FIG. 1 (A). FIG.

FIG. 2 is a sectional view taken along line II-II of FIG.

FIG. 3 is a side view of the engine of FIG. 1;

[Explanation of symbols]

(1) Crankcase side wall, (1a) Crankcase, (2) Unpurified oil passage, (3) Location, (4) Centrifuge mounting seat,
(5) ... unpurified oil outlet passage, (6) ... oil pan, (7) ... purified oil introduction passage, (8) ... mounting seat surface, (9) ... outlet, (10) ...
Inlet, (11) centrifuge, (12) base, (13) unpurified oil introduction passage, (14) purified oil outlet passage, (15) attached surface, (16) entrance, ( 17) ... outlet, (18) ... lubricating oil filter, (19) ... fuel injection pump, (20) ... lower space, (25) ... lubricating oil pump, (27) ... lubricating oil filter mounting seat, (29) ... Rotor, (30) ... case, (31) ... cup, (32) ... lid.

Continuation of front page (72) Inventor Gaku Miyazaki 3-8 Chikushinmachi, Sakai-shi, Osaka F-term in Kubota Sakai Rinkai Plant 3G015 AA07 BA05 BG00 BG03 BG16 CA06 DA02 DA11 EA09 4D057 AA00 AB01 AC01 AD01 AE02 AF01 BA06 BB03 BC19 4D064 AA23 BM12 BM34 4D066 AB10

Claims (5)

[Claims] An engine lubricating oil purifying device provided with a centrifuge (11), comprising a centrifuge mounting seat (4), wherein the centrifuge mounting seat is provided.
(4) The lubricating oil pump (2) in the crankcase side wall (1)
The centrifugal separator mounting seat (4) is disposed at a place (3) where an unpurified oil passage (2) extending from 5) to the lubricating oil filter mounting seat (27) is formed. aisle
(5) and a purified oil introduction passage (7), and an unpurified oil outlet passage.
(5) is branched from the unpurified oil passage (2), and the purified oil introduction passage (7) is connected to the oil pan (6) via the crank chamber (1a).
And the centrifugal separator mounting seat (4).
Has an outlet (9) of an unpurified oil outlet passage (5) and an inlet (10) of a purified oil introduction passage (7). The base (12) of the centrifuge (11) aisle
(13) and a purified oil outlet passage (14).
The mounting surface (15) of (2) has an inlet (16) of the unpurified oil introduction passage (13) and an outlet (17) of the purified oil outlet passage (14). When the mounting surface (15) is attached, the outlet (9) of the unpurified oil deriving passage (5) and the inlet (16) of the unpurified oil introducing passage (13) match, and the purified oil deriving passage ( The outlet (17) of (14) and the inlet (10) of the purified oil introduction passage (7) are configured to coincide with each other. 2. The engine lubricating oil purifying device according to claim 1, wherein a centrifugal separator (11) is provided on both right and left sides of the engine.
Characterized in that a lubricating oil filter (18) is arranged on the side where is arranged. 3. The apparatus for purifying lubricating oil for an engine according to claim 1, wherein the centrifugal separator (11) is disposed on a side of the left and right sides of the engine where the fuel injection pump (19) is disposed. That are characterized by 4. The apparatus according to claim 3, wherein the centrifugal separator (11) is disposed in a space (20) below the fuel injection pump (19). 5. The lubricating oil purifying device for an engine according to claim 1, wherein the rotor (2) of the centrifugal separator (11) is provided.
9) includes a cup (31) and a lid (32), wherein the lid (32) is detachably attached to the cup (31).