JPH06280537A - Internal combustion engine with oil filter - Google Patents

Abstract

(57) [Summary] [Construction] A housing 1 provided with a connecting flange 10 having a sealing frame member 11 is provided in an internal combustion engine, and an oil filter 4 having a filter socket 4'is connected to the connecting flange 10 via a sealing plate 3. The attached sealing plate 3 has a through hole 302 for flowing lubricating oil from the feed oil passage 101 of the connecting flange 10 to the filter socket 4 ', and a lubricating oil coming out of the oil filter 4 from the filter socket 4'to the connecting flange. 10 and a through hole 308 for flowing to the return oil passage 109, the filter socket 4 ′ is formed along the surface of the flange 40 of the filter socket 4 ′ and is surrounded by the sealing frame member 41. , 407, through holes 302, 308 and flow paths 403, 406, 4
Reference numeral 07 forms a path for returning the lubricating oil from the internal combustion engine to the internal combustion engine after passing through the oil filter 4. [Effect] The flow path of the oil returning from the internal combustion engine to the internal combustion engine again is configured by attaching the oil filter having the filter socket and the sealing plate to the connecting flange of the internal combustion engine without requiring external piping. To be done.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an internal combustion engine equipped with an oil filter for lubricating oil.

[0002]

2. Description of the Related Art An internal combustion engine incorporating an oil filter is known and widely used in automobiles. Many,
An oil cooler is also provided along with an oil filter.
The internal combustion engine of an automobile is generally manufactured by the automobile manufacturer, but the oil filter and oil cooler are usually supplied from a subcontractor. In this case, the subcontractor had the following problems. In other words, since the shape and arrangement of the connection flange of the internal combustion engine is determined by the automobile manufacturer for each specification, the oil flow path from the connection flange to the oil filter or oil cooler, and in the opposite direction, and further to the internal combustion engine Often complicated piping.

In known internal combustion engines with an oil filter, the oil filter socket is fitted to the contour of the connecting flange of the internal combustion engine. For this reason, it is necessary to form the required flow path by a separate pipe member and provide it inside the oil filter housing or the filter socket in advance. As a result, the shape becomes complicated, and the number of manufacturing processes increases due to the need for work such as hole processing, flow path formation, deburring, and packing mounting, which causes an increase in manufacturing cost.

German Utility Model 920244 discloses an adapter for an oil filter device for an internal combustion engine of a motor vehicle or the like. This adapter has a flat plate shape having a thin member and a thick member, and the thick member is provided with a plurality of through holes penetrating substantially perpendicularly to the plate surface. Both sides of the plate are ground flat and used as a large area sealing surface. The function of this known adapter (Vorsatzstueck) is to allow an oil filter to be retrofitted to an internal combustion engine of old construction which cannot be fitted with a replacement oil filter. However, this retrofit adapter has the disadvantage that it can only be used if the oil path between the connection of the internal combustion engine and the connection of the oil filter is of simple geometry. This significantly limits the availability of this known solution.

Further, German Laid-Open Publication No. 4037628 proposes an intermediate plate for assembling a conventional Spin-On-Oel filter and an engine block, and this intermediate plate flows into an oil filter. It has a plurality of inlets for the oil that flows and one outlet for the oil that flows out of the oil filter. It has also been proposed that at least part of the inlet be connected to the outlet by a bypass. The bypass device is opened by the valve device when a predetermined hydraulic pressure is reached. In this known technique, the intermediate plate is also used to receive a bypass valve that is withdrawn from the oil filter, the bypass valve being transferred to the intermediate plate. The connection structure between the inlet and the outlet completely matches the connection structure of the engine block on the oil filter side. This conventional example is limited to the case where the simple geometrical form can be used.

[0006]

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide an internal combustion engine with an oil filter which is capable of forming an oil passage so as to reduce the manufacturing cost even in a complicated geometric form. Especially.

[0007]

A first feature of an internal combustion engine with an oil filter according to the present invention for achieving the above object is to provide a housing having a connecting flange having a sealing frame member in the internal combustion engine, An oil filter having a filter socket is attached to the connecting flange via a sealing plate, and the sealing plate is provided with a through hole for flowing lubricating oil from a feed oil passage of the connecting flange to the filter socket and an outlet from the oil filter. Lubricating oil provided with a through hole for allowing incoming lubricating oil to flow from the filter socket to the return oil passage of the connection flange, the filter socket being formed along the surface of the flange and surrounded by a sealing frame member. The through hole and the flow path return lubricating oil from the internal combustion engine to the internal combustion engine after passing through an oil filter. Lies in forming the path of the fit.

According to a second characteristic configuration, in addition to the first characteristic configuration, the sealing plate has a sealing frame member corresponding to the sealing frame member of the connection flange on a surface of the connection flange side, and , A sealing frame member corresponding to the sealing frame member provided on the filter socket is provided on the filter socket side surface.

A third characteristic configuration is the same as the first or second characteristic configuration, in which the cooling liquid flows through the chamber surrounded by the housing and the sealing plate, and the heat exchanger constituting the oil cooler is hermetically sealed. A sealing plate attached to a plate and housed in the chamber, and the sealing plate for passing lubricating oil from the filter socket to the heat exchanger and for flowing lubricating oil from the heat exchanger to the filter socket. And a through hole.

Further, in a fourth characteristic configuration, a cavity opened in the flange surface is provided in the lower region of the filter socket in an assembled state, and this cavity is connected to an oil filter through a discharge valve opened when the filter cartridge is removed. And a through hole communicating with the cavity is provided in the sealing plate, and an opening to the crankcase of the internal combustion engine communicating with the through hole is provided in the connecting flange.

[0011]

According to the first characteristic configuration, all the connection structures required for the flow of oil from the internal combustion engine, through the oil filter, and back to the internal combustion engine are provided with an oil filter having a filter socket. It is easily constructed by attaching the sealing plate to the connecting flange of the internal combustion engine.
In this case, the portion of the filter socket located on the connection flange and overlaid with the sealing plate is used as an oil flow path.

According to the present invention, since the flow path of the filter socket can be formed by a casting technique or the like which does not require costly cutting work, manufacturing of the filter socket is particularly simplified. The sealing structure of the flange-bonded portion is performed by using an ordinary gasket or an elastic gasket vulcanized and bonded to a sealing plate and a tightening bolt. The position of each oil passage connection port on the internal combustion engine side of the connection flange can be geometrically independent of the position of the oil passage connection port of the oil filter. The positional deviation of the pair of oil passage connection ports caused in this case is adjusted by the flow passage formed on the flange surface of the filter socket connected thereto. In this way, the independence between the structure of the internal combustion engine and the structure of the oil filter can be increased, and a more appropriate solution can be achieved while avoiding a structural compromise.

According to the second characteristic configuration, a desired oil passage is formed by cooperation of the through hole of the sealing plate and the sealing frame members provided on both surfaces of the sealing plate. The sealing frame member provided on one surface of the sealing plate may be independent from the structure of the sealing frame member provided on the other surface.

According to the third characteristic configuration, the oil cooler can be compactly housed in the internal combustion engine together with the oil filter. Moreover, the oil cooler can be easily connected to the oil filter simply by attaching the heat exchanger of the oil cooler to the sealing plate and assembling it without requiring any special connecting means or external piping for the oil cooler. In addition, in German Laid-Open Publication No. 4029408, there is an internal combustion engine equipped with a heat exchanger for lubricating oil, which enables a space-saving configuration of the heat exchanger by housing the heat exchanger in a housing and directly flange-joining the internal combustion engine. Although described, there is no description about the integrated structure with the oil filter, and its possibility is not suggested.

According to the fourth characteristic structure, when the filter cartridge is replaced, the residual oil remaining in the oil filter can be easily returned to the internal combustion engine. For this purpose, the oil filter is equipped with a drain valve which opens when the filter cartridge is removed from the oil filter. Residual oil flows through this drain valve into the cavity in the lower region of the filter socket, from there through corresponding through holes in the sealing plate and back into the crankcase through openings in the housing. This avoids environmental pollution and loss of lubricating oil due to waste oil.

[0016]

Embodiments of the present invention will be described below with reference to the drawings. The left-hand part of FIG. 1 shows a cross section of a housing 1 of an internal combustion engine, which housing 1 has a connecting flange 10 for an oil cooler 2 and an oil filter 4. The oil cooler 2 includes a heat exchanger 20. The heat exchanger 20 is attached to the sealing plate 3 and is housed in the chamber 13 formed in the housing 1. Heat exchanger 2
The lubricating oil to be cooled flows through 0, and a cooling fluid such as cooling water flows around the lubricating oil to cool the lubricating oil. On the surface of the sealing plate 3 opposite to the housing 1,
The oil filter 4 is hermetically mounted by means of a filter socket 4 ′ having a flange 40. The mounting is performed by tightening with a plurality of bolts.

From the internal combustion engine to the heat exchanger 2 of the oil cooler 2
0 and the flow of the lubricating oil to the oil filter 4, and the flow in the reverse direction to the internal combustion engine pass through the inside of the sealing plate 3, the heat exchanger 20 and the filter socket 4 ', and no special piping is required. For example, the lubricating oil that is sent from the internal combustion engine by an oil pump to be cooled and purified is the flange 10
A feed oil passage 10 formed on the surface of the housing 1 surrounded by
1 through the through hole 302 formed in the sealing plate 3 in accordance with the feed oil passage 101 to flow into the filter socket 4 ′. Inside the filter socket 4 ′, a through hole 304 formed in the upper region of the sealing plate 3 is passed through an oil passage described later.
Flows to.

The through hole 304 of the sealing plate 3 is aligned with the inflow port 204 of the heat exchanger 20. The lubricating oil cooled through the heat exchanger 20 flows to the heat exchanger outlet 205. Another through hole 305 is provided in the sealing plate 3 in accordance with the discharge port 205, and the through hole 305 is connected to the flow path formed inside the filter socket 4 ′. The purified lubricating oil flowing from the oil filter again flows through the filter socket 4'to the through hole 308 of the sealing plate 3, and passes through the return oil passage 109 formed in the housing 1 to a predetermined lubricating point of the internal combustion engine. To The through hole 308 of the sealing plate 3 is formed so as to match the return oil passage 109.

Further, in the lower region of the filter socket 4 ′, the sealing plate 3 and the housing 1, there is provided an opening which communicates with the oil filter 4 in a mounted state. That is, the through hole 344 of the sealing plate 3, the opening 14 of the housing 1,
And a cavity (44 in FIG. 5) of the oil filter socket 4 '. Due to these flow paths, when the filter cartridge is replaced, residual oil is easily guided from the inside of the oil filter 4 into the housing 1 of the internal combustion engine, particularly into the crankcase, through the discharge valve that opens when the filter cartridge is removed. .

FIG. 2 shows a connecting flange 10 of a housing 1 of an internal combustion engine. The connection flange 10 surrounds a substantially quadrangular surface, and six holes 12 for connecting bolts for attaching the sealing plate 3 and the oil filter socket 4 ′ are provided around the connection flange 10. The connection flange 10 includes a hermetically sealing frame member 11, and the surface of the hermetically sealing frame member 11 is processed to be flat and functions as a hermetically sealing surface. In the upper region of the connection flange 10, the sealing frame member 11 surrounds the chamber 13 for the heat exchanger 20 of the oil cooler 2.

In the lower region of the connecting flange 10,
The sealing frame member 11 surrounds an opening 14 into the crankcase of the internal combustion engine. In this area, two smaller areas, that is, the feed oil passage 101 and the return oil passage 109 are formed by the sealing frame member 11. The lubricating oil to be cooled and filtered is sent out from the oil tank of the internal combustion engine through the feed oil passage 101 by an oil pump, for example, and is supplied again to the lubricated portion of the internal combustion engine through the return oil passage 109.

As shown in the sectional view of FIG. 3, the sealing plate 3 is formed with a plurality of through holes. One round hole 302 is aligned with the feed oil passage 101 of the connection flange 10, and another round hole 308 is aligned with the return oil passage 109 of the connection flange 10. Through hole 304 and through hole 30 in the upper region
5 communicates with the heat exchanger 20 that is hermetically attached to the back surface of the sealing plate 3 as shown by the broken line, and the through hole 30
Reference numeral 4 is formed so as to match the inflow port 204 of the heat exchanger, and the through hole 305 is formed so as to match with the outflow port 205 of the heat exchanger. Seal plate 3
6 holes 32 are formed in the peripheral region of the connection flange 10 in accordance with the holes 12 in the peripheral region of the connection flange 10, and are used as holes for fixing bolts.

FIG. 4 shows the filter socket 4'of the sealing plate 3.
The surface on the side (the surface on the connection flange 40 side) is shown. Through hole 30
2, 304, 305, 308, and 344 are as described above with reference to FIG. Unlike FIG. 3, FIG. 4 shows the sealing frame member 31. This is the sealing frame member 4 of the connection flange 40 (see FIG. 5) of the filter socket 4 '.
It is set to 1. Also, a gasket is placed as shown by cross hatching. Further, a sealing frame member 30 shown by a broken line is formed on the back surface of the sealing plate 3.
The sealing frame member 30 is fitted to the sealing frame member 11 of the connection flange 10 shown in FIG.

FIG. 5 shows the connecting flange 40 of the filter socket 4 '. The contour of the connecting flange 40 is matched with the contour of the sealing plate 3 and the contour of the connecting flange 10, but is shown in FIG. 5 as a mirror-symmetrical view when viewed from the opposite direction to FIGS. A hole 32 of the sealing plate 3 is provided on the outer peripheral portion.
Also, holes 42 for bolts are provided so as to match the holes 12 of the connection flange 10. The connection flange 40 of the oil socket 4'is formed with a plurality of flow paths for sending the lubricating oil to predetermined locations.

First, the flow path 403 located on the right side in FIG. 5 will be described. In the assembled state, the flow path 403 will be described.
Through which the partial oil flow flows from the through hole 302 of the sealing plate 3 to the through hole 304, and from there, the inflow port 204 of the heat exchanger.
Flows to. Next, the flow channel 406 located in the left central region is in communication with the through hole 305 of the sealing plate 3 in the assembled state, and is connected to the inlet side of the oil filter through the flow channel 46 extending into the oil filter socket 4 ′. is doing. The purified oil that emerges from the oil filter flows through another channel 47 extending into the oil filter socket 4'to a third channel 407 provided in the connecting flange 40. This third
The flow path 407 of the above is communicated with the through hole 308 of the sealing plate 3 in the assembled state. The return oil passage 109 of the connection flange 10 of the internal combustion engine also communicates with the through hole 308 of the sealing plate 3.

Cavity 4 in the lower region of the connecting flange 40
As described above, 4 is used for returning the residual oil from the oil filter when the filter cartridge is replaced. This residual oil passes through the through hole 344 of the corresponding shape of the sealing plate 3.
And through the opening 14 of the connecting flange 10 of the housing 1 into the crankcase.

The flow of lubricating oil in the internal combustion engine of this embodiment, to which the oil cooler 2 and the oil filter 4 are attached, is as follows. The lubricating oil sent from the oil pan to the feed oil passage 101 of the connection flange 10 by the oil pump of the internal combustion engine passes through the through hole 302 of the sealing plate 3 and the flow passage 4 of the connection flange 40 of the oil filter socket 4 ′.
It flows into 03. The oil passes through this flow path 403 and the sealing plate 3
Through the through hole 304, and flows into the inflow port 204 of the heat exchanger 20 of the oil cooler 2 through the through hole 304. The oil cooled through the heat exchanger 20 is used as the heat exchanger 2
No. 0 outflow port 205, through the through hole 305 of the sealing plate 3, and flows into the flow path 406 of the connection flange 40 of the oil filter socket 4 ′. The oil further flows through the flow path 46 to the oil filter where it is purified, passes through the flow path 47 and returns to the oil filter socket 4'and enters the flow path 407 provided therein. This channel 4
The oil passes through 07, reaches the through hole 308 of the sealing plate 3, further passes through the return oil passage 109 of the connection flange 10 of the housing 1, and flows to a predetermined lubrication point. From there, the oil returns to the oil pan again due to gravity.

As described above, all the through holes and flow paths required for the flow of the lubricating oil in the area of the oil filter and the oil cooler are connected to the connecting flange 10 of the housing 1 of the internal combustion engine and the oil filter socket 4 '. Connection flange 4
0, and is provided in the area of the sealing plate 3 which is hermetically arranged between the flanges 10, 40. The formation of the flow path of the oil filter socket 4'is very simple.
In other words, it is not a method that requires time-consuming cutting such as drilling, but a flow path is easily formed by making a mold for forming a filter socket and casting the filter socket as a light metal die-cast member. it can. An embodiment without an oil cooler may have a simpler structure.

[Brief description of drawings]

FIG. 1 is a partial cross-sectional view showing a part of a housing of an internal combustion engine provided with a connection flange and an oil cooler in a vertical cross section, and showing a sealing plate supporting the oil cooler and an oil filter with a filter socket in a side view.

FIG. 2 shows a connecting flange of a housing of an internal combustion engine,
II-II sectional view of FIG.

FIG. 3 is a sectional view taken along line III-III of FIG. 1, showing a sealing plate.

FIG. 4 shows I of FIG. 1 showing the filter socket side of the sealing plate.
V-IV sectional view

5 is a sectional view taken along line VV of FIG. 1, showing a flange side of the filter socket.

[Explanation of symbols]

 1 Housing 2 Oil Cooler 3 Sealing Plate 4 Oil Filter 4'Filter Socket 10 Connection Flange 11 Sealing Frame Member 13 Chamber 20 Heat Exchanger 30, 31, 41 Sealing Frame Member 44 Cavity 101 Feed Oil Channel 109 Return Oil Channel 302, 304, 305, 308, 344 Through hole 403, 406, 407 Flow path

 ─────────────────────────────────────────────────── ─── Continued Front Page (72) Inventor Wilhelm Aldes, Federal Republic of Germany 59387 Ascheberg Albert-Koch-Strasse 21 Be

Claims (4)

[Claims] 1. An internal combustion engine with an oil filter (4) for lubricating oil, the housing (1) having a connecting flange (10) with a sealing frame member (11) being provided in the internal combustion engine. , An oil filter (4) having a filter socket (4 ′) is attached to the connecting flange (10) via a sealing plate (3), and the sealing plate (3) feeds oil to the connecting flange (10). A through hole (302) for flowing lubricating oil from the passage (101) to the filter socket (4 ′) and lubricating oil coming out from an oil filter (4) from the filter socket (4 ′) to the connecting flange ( 10) Return oil passage (1
09) and a through hole (308) for flowing into the filter socket (4 ′).
0) is formed along the surface of the lubricating oil flow passage (403, 406, 40) surrounded by the sealing frame member (41).
7), the through hole (302, 308) and the flow path (403,
406, 407) forms a path for returning the lubricating oil from the internal combustion engine to the internal combustion engine after passing through the oil filter (4). 2. The sealing plate (3) has a sealing frame member (30) corresponding to the sealing frame member (11) of the connection flange (10) on a surface on the connection flange (10) side, and , A sealing frame member (31) corresponding to a sealing frame member (41) provided on the filter socket (4 ') is provided on a surface of the filter socket (4') side. The internal combustion engine with an oil filter according to 1. 3. A cooling liquid flows through a chamber (13) surrounded by the housing (1) and the sealing plate (3), and a heat exchanger (20) constituting an oil cooler (2) is sealed by the heat exchanger (20). Mounted on a plate (3) and housed in the chamber (13),
In addition, the sealing plate (3) has a through hole (304) for flowing lubricating oil from the filter socket (4 ′) to the heat exchanger (20) and the heat exchanger (20) to the filter socket (20). An internal combustion engine with an oil filter according to claim 1 or 2, further comprising a through hole (305) for allowing lubricating oil to flow to 4 '). 4. A cavity (44) is provided in the lower region of the filter socket (4 ') in the assembled state, which is open on the surface of the flange (40), the cavity (44) being opened when the filter cartridge is removed. Of the internal combustion engine, which is connected to the oil filter (4) via the through hole (344) and communicates with the cavity (44), is provided in the sealing plate (3), and communicates with the through hole (344). The opening (14) to the crankcase is the connecting flange (10).
The internal combustion engine according to claim 1, wherein the internal combustion engine is provided in the internal combustion engine.