DE202005003383U1 - Oil sump for automobile engine has oil extraction pipe provided with extension pipe which is rotatable for extraction of oil from lowest point of sump - Google Patents

Abstract

The oil sump (1) has an oil extraction pipe (2) provided with a free end (2a) depending into the oil sump and fitted with an extension pipe (3) which is rotated about an axis (4) such that the free end (3a) of the extension pipe rotates in a given plane (11') above the base (1a) of the oil sump. The centre of gravity of the extension pipe is spaced from its rotation axis. An independent claim for an internal combustion engine provided with an oil sump is also included.

Description

I. Field of application

The The invention relates to an oil reservoir, such as he used a variety of oil lubricated Machines is present and in particular directly on the housing of the oil-lubricated Machine, usually in its lowest area, is present. There Due to gravity, the oil returning from the machine collects and becomes from there via a Suction pipe is sucked into the machine again to lubricate it.

II. Technical background

One typical application is the oil sump of an internal combustion engine, which is tightly screwed to the underside of the motor housing, and from that one relative to the oil pan firmly positioned intake pipe protrudes into the oil pan so that the free end of the intake pipe near the deepest part of the sump ends, so that even at a low oil level in the oil pan through the intake pipe still oil can be sucked up into the engine.

To this is the purpose of the oil pans a floor that runs either parallel to the upper opening plane of the oil pan or even slightly inclined to this put, around a defined lowest area relative to the upper opening plane the oil pan to generate in which the Saugschnorchel can end.

at Vehicles that are a major application for internal combustion engines However, there is the problem that the vehicle and thus also the upper opening plane the oil pan not always exactly in the horizontal, which is especially at all-terrain vehicles leads, that can not be predicted which point in the ground area the oil pan actually absolutely considered at the moment is the lowest point.

from that the problem arises that in extreme cases, ie at low oil level and strong tilt of the vehicle, the free end of the intake pipe is no longer in the lowest point of the oil sump collecting oil ends, but away from it in the air, so no more oil sucked and thereby engine damage due to lack of lubrication can arise after a short time.

ever cross-country one Vehicle is, the sooner you can strong slopes and that the whole problem occurs.

III. Presentation of the invention

a) Technical task

It is therefore the object according to the invention, an oil reservoir too create that avoids this problem.

b) Solution of the task

These The object is solved by the features of claim 1 and 9. advantageous embodiments emerge from the dependent claims.

By the rotatable arrangement of an extension tube at the firmly positioned, free end of the usual Ölansaugrohres and its tight connection with the Ölansaugrohr can the free end the extension tube, which is spaced from the axis of rotation of the extension tube, in a plane above that Bottom of the oil pan circling and thus adjusts itself according to gravity at a not horizontally standing oil pan always automatic at the lowest point of the oil sump.

ever better and less friction the rotatable mounting of the extension tube is formed on the fixed intake pipe, the smaller the inclinations of the oil pan, So a deviation of the axis of rotation of the vertical, are sufficient, around this self-acting Aligning the extension tube to effect according to the center of gravity.

By one possible small distance of the parallel plane, in which the free end of the extension tube revolves, to the ground level, the danger is reduced that at low oil level no oil through the extension tube can be sucked more.

the the same purpose is the adaptation of the base of the oil pan in the bottom area the circle of the extension tube, which possible close to the interior walls the oil pan to turn along in the ground area.

To For this purpose, the bottom portion of the oil pan, so preferably in the supervision, a circular shape and thus deviates from the usual elongated Rectangular shape of an oil pan, as with a z. As in-line engine is common, from, so that in between oblique transition areas are available as compensation to the upper open end of the peripheral contour the oil pan unchanged leave, which is designed as a screw-flange according to the mating flange in the form of the lower free end of the motor housing.

To the rotation of the Verlängerungsroh Res, the extension tube is preferably mounted by means of a rolling bearing, in particular a sealed rolling bearing, relative to the intake manifold. By the largest possible radial projection of the extension tube creates a large radial distance of the center of gravity of the extension tube from the axis of rotation, which also promotes the self-adjustment to center of gravity.

Around to avoid that, despite the small distance between the ground and the opening at the free end of the extension tube in the oil pan itself depositing oil sludge is sucked in, is in the intake at the free end of the extension tube additionally arranged a sieve.

For oil pans, where the plane of the opening the fixedly positioned intake pipe not parallel, but obliquely to the ground plane the sump runs, it would not be optimal, the extension tube directly at this angle standing opening store the fixed intake pipe.

In In this case, an adapter tube at the inclined opening of the attached fixed intake pipe, which is designed so that its free opening again parallel to the desired Level, mostly the floor level of the oil sump or the flange plane is, and at this the rotatable extension tube stored, so turn in normal position of the corresponding motor a vertical axis of rotation results.

c) embodiments

embodiments according to the invention in the following example closer described. Show it:

1 Sectional views of oil pans according to the invention,

2 Top view and side view of the sump of the 1b , and

3 a perspective view of the oil pan the 1b and 2 ,

The 1a and 1b show a longitudinal section through the usually analogous to the base of an engine elongated oil pan 1 which essentially consists of a soil 1a and side walls ascending from the edge 7 consists of the upper free end as a flange 17 is formed, through which the screwing takes place at the corresponding counter flange on the underside of the motor housing, which is not shown here.

From the upper opening protrudes into the oil pan 1 a cranked in this case intake pipe 2 into which is connected to the motor-driven oil pump at the upper end, and through the lower free end 2a that in the oil pan 1 accumulated oil, its oil level 20 is shown by a dashed line, to be sucked.

In 1a is the intake pipe 2 sloping to the ground level 11 arranged, and also the opening plane 15 the free end 2a is thus at an angle to the ground level 11 , In contrast, the oil pan 1 according to 1b the intake pipe 2 positioned so that the opening plane 15 his free end 2a parallel to the ground level 11 runs.

In 1b is shown as an extension tube 3 at the free end 2a the intake pipe 2 , in particular directly, by means of a rolling bearing 8th or a plain bearing rotatable about an axis of rotation 4 is stored, which is thus perpendicular to the ground level 11 stands.

That of the rotation axis 4 radially projecting extension tube 3 whose center of gravity is thus also off the axis of rotation 4 can lie around the axis of rotation 4 , which are approximately centric to the area of the ground area 1b the oil pan 1 is rotated by a full 360 °, and adjusts itself in an inclined oil pan according to gravity itself so that it faces the low area of the oil pan.

As 1b shows, even at very low oil level 20 ' to that the free end 3a of the extension tube 3 is still within the deepest accumulated oil.

Due to the substantially tight connection of the extension tube 3 with the intake pipe 2 Thus, even at the junction no air is drawn, but oil through the intake pipe 2 sucked to the oil pump.

In the 1b obliquely drawn oil sump also reveals that the extension tube 3 the faster and more reliably turns in a position corresponding to gravity to the lowest point indicative position, the stronger the inclination of the engine and thus the oil pan and thus the greater the inclination of the oil level 20 to the ground level 11 is, so that even a simple, still a relatively high coefficient of friction sliding bearing between intake manifold 2 and extension tube 3 is sufficient.

1b further shows that the radial projection 5 of the extension tube 3 so big should be that the opening 13 as close as possible to the edge of the floor area 1b the oil pan 1 which in turn is only made possible by the fact that the ground area 1b a circular contour, ie the circle of the circle 6 of the extension tube 3 , as strong as possible is approaching, so - as before in 2a apparent - the floor area 1b especially in the supervision has a circular contour, in the center of which the axis of rotation 4 of the extension tube 3 which lies in 2a and also in 3 drawn in several rotational positions.

The 1a and 1b further show that the extension tube 3 preferably designed so that its opening 13 at the free end 3a preferably in the parallel plane 11 ' to the ground level 11 which is also the absorption of oil even at extremely low oil levels 20 ' serves.

In order to avoid that in the deepest area of the sump regularly accumulating oil sludge is sucked with, is the opening 13 through a sieve 14 covered, which is fine enough to retain oil sludge.

1a further shows that to ensure the most vertical position of the axis of rotation 4 relative to the ground level 11 at an angle to the ground level 11 standing opening plane 15 the intake pipe 2 first at the free end 2a the intake pipe 2 an adapter tube 16 screwed, which is designed so that its free end 16a - then by the extension tube 3 rotatable in a z. B. Rolling is stored - with its opening plane parallel to the ground plane 11 and in the center.

For oil pans, their flange 17 according to the shape of the motor housing and thus the upper portion is configured elongated, thus standing in the top view circular bottom area 1b laterally in front, with corresponding transition areas.

• – die Original-Ölwanne in der richtigen Höhe oberhalb des Bodenbereiches abgeschnitten wird,
• – ein als Blechbiegeteil oder Schweißteil hergestellter Bodenbereich 1b einschließlich der Seitenwände und schrägen Übergangsbereiche dicht an den nach unten offenen, oberen, abgetrennten Bereich der Ölwanne 1 angeschweißt wird, und
• – am freien Ende 2a des Ansaugrohres 2 das passend geformte Verlängerungsrohr 3 drehbar und dicht befestigt wird, gegebenenfalls unter Zwischenordnung eines Adapterrohres 16, um Position und Schrägstellung des z. B. Wälzlagers 8 zentral und parallel zu der Bodenebene 11 des Bodenbereiches 1b der Ölwanne 1 zu positionieren.

Accordingly, a retrofitting of an engine with the oil pan according to the invention can be effected in a simple manner that

• - the original oil pan is cut off at the correct height above the floor area,
• - A produced as a sheet metal part or welded part floor area 1b including the sidewalls and sloping transition areas close to the downwardly open, upper, separated area of the sump 1 is welded, and
• - at the free end 2a the intake pipe 2 the suitably shaped extension tube 3 is rotatably and tightly secured, optionally with the interposition of an adapter tube 16 to position and inclination of z. B. Rolling 8th central and parallel to the ground level 11 of the ground area 1b the oil pan 1 to position.

1

oil pan

1a

ground

1b

floor area

2

intake

2a

free The End

3

extension tube

3a

free The End

4

axis of rotation

5

radial projection

6

circle

7

Side wall

8th

roller bearing

9

engine

10

vertical

11

ground level

11 '

parallel plane

13

opening

14

scree

15

opening plane

16

adapter

16a

free The End

17

flange

20

oil level

Claims (9)

Oil reservoir, in particular oil sump ( 1 ), for an oil-lubricated machine, in particular an internal combustion engine ( 9 ), with - a fixed oil intake pipe ( 2 ) with a free end ( 2a ) inside the storage container, characterized in that - at the free end ( 2a ) tight and rotatable about an axis of rotation ( 4 ) an extension tube ( 3 ) is arranged directly or indirectly so that its free end ( 3a ) in one level ( 11 ' ) above the ground ( 1a ) of the oil pan ( 1 ), and - the center of gravity of the extension tube ( 3 ) spaced from its axis of rotation ( 4 ). Oil reservoir according to claim 1, characterized in that the plane ( 11 ' ) a parallel plane to the horizontal and / or the ground plane ( 11 ) and / or the smallest possible distance to the ground plane ( 11 ) having. Oil storage container according to one of the preceding claims, characterized in that - the axis of rotation ( 4 ) in the center of the base of the soil ( 1a ), - the ground ( 1a ) has a basic shape as close as possible to the circular shape, in particular a circular shape, and, - the radial projection ( 5 ) of the free end ( 3a ) of the extension tube ( 3 ) from the axis of rotation ( 4 ) is so large that the circle ( 6 ) of the extension pipe ( 3 ) as close as possible to the edge and thus to the side walls ( 7 ) of the oil pan ( 1 ). Oil reservoir according to one of the preceding claims, characterized in that the oil sump ( 1 ) in its lower region a circular in plan view contour ( 1b ) having. Oil reservoir according to one of the preceding claims, characterized in that the extension tube ( 3 ) in the free end ( 2a ) of the fixedly positioned intake pipe ( 2 ) via a rolling bearing ( 8th ), in particular sealed rolling bearing ( 8th ) is stored. Oil reservoir according to one of the preceding claims, characterized in that the free end of the extension tube ( 3 ) one in the plane ( 11 ' ) opening ( 13 ) having. Oil reservoir according to one of the preceding claims, characterized in that the opening ( 13 ) through a sieve ( 14 ) is covered. Oil reservoir according to one of the preceding claims, characterized in that in the case of a firmly positioned intake snorkel ( 2 ) whose free end ( 2a ) has an opening whose opening plane ( 15 ) obliquely to the horizontal of the soil ( 1a ), at the free end ( 2a ) of the intake pipe ( 2 ) an adapter tube ( 16 ) is tightly arranged, in particular screwed, in its free end ( 16a ) whose opening plane is parallel to the ground plane ( 11 ), the extension tube ( 3 ) is rotatably and tightly mounted. Internal combustion engine ( 9 ), characterized in that the engine ( 9 ) an oil pan ( 1 ) according to one of the preceding claims.