DE102014007285A1 - Oil pan with at least one additional oil chamber - Google Patents

Abstract

An oil pan (10) of an internal combustion engine, in particular of a motor vehicle, is described. A tray main body (12) comprises at least a portion of at least one main oil chamber (14) and at least a portion of at least one auxiliary oil chamber (16). The at least one auxiliary oil chamber (16) is arranged in the normal operating orientation of the oil sump (10) laterally adjacent to the main oil chamber (14). At least a portion of a wall (28, 30) of the at least one auxiliary oil chamber (16) is formed integrally with the pan main body (12). The at least one auxiliary oil chamber (16) is connected to the main oil chamber (14) by means of at least one passage opening (38). The at least one auxiliary oil chamber (16) has at least one additional outer opening (36) during production, which is closed in the finished oil sump (10) with at least one additional closing body (42). The additional closure body (42) is arranged in the normal operating orientation of the oil pan (10) on a lower spatial underside of the auxiliary oil chamber (16).

Description

Technical area

The invention relates to an oil sump of an internal combustion engine, in particular of a motor vehicle, comprising a sump main body comprising at least a portion of at least one main oil chamber and at least a portion of at least one auxiliary oil chamber, wherein the at least one auxiliary oil chamber is disposed in the normal operating orientation of the sump laterally adjacent to the main oil chamber. at least a portion of a wall of the at least one auxiliary oil chamber is integrally formed with the trough main body, the at least one auxiliary oil chamber is connected by at least one passage opening with the main oil chamber and the at least one auxiliary oil chamber in the production at least one additional outer opening having in the finished oil pan closed at least one additional closure body.

State of the art

From the EP 2 217 794 B1 For example, an oil pan is known which comprises a main body with a main oil chamber and a wall. The oil pan includes at least one auxiliary oil chamber. The wall has at least one passage opening through which the auxiliary oil chamber is connected to the main oil chamber of the main body. At least part of a wall of at least one auxiliary oil chamber has been produced separately from the main body and subsequently connected to the main body. At least one auxiliary oil chamber is arranged laterally next to the main oil chamber. At least one passage opening is formed in a longitudinal side wall of the main oil chamber. At least part of a wall of at least one auxiliary oil chamber is integrally formed with the main body. The integrally formed with the main body part of the wall comprises a bottom wall of the auxiliary oil chamber.

The invention has for its object to design an oil pan of the type mentioned, in which at least the tray main body made easy and the at least one additional outer opening can be easily closed.

Disclosure of the invention

This object is achieved in that the additional closure body is arranged in the normal operating orientation of the oil pan at a lower spatial bottom side of the auxiliary oil chamber.

According to the invention, the additional outer opening is located on a lower side of the oil sump. A connection opening of the oil pan to an engine block of the internal combustion engine is usually in the normal operating position above. The connection opening may advantageously be surrounded by a corresponding motor connection flange with which the oil sump can be fastened to the engine block. The at least one additional outer opening can thus be arranged on the opposite side of the connection opening. The at least one auxiliary oil chamber is open during the molding process of the trough main body on the side of the additional outer opening. Likewise, the connection opening is open during the manufacturing process. The at least one auxiliary oil chamber is freely accessible in this way from the bottom during the production process of the oil sump, in particular of the sump main body. It can be easily removed from the opposite side of the connection opening in particular. Advantageously, tools, in particular molding tools, for molding the tray main body through the at least one additional outer opening and optionally the connecting opening, in particular from opposite sides, can be arranged in at least one inner space of the tray main body. In a later assembly process, the additional outer opening is closed with the at least one additional closure body. The additional closure body for closing the auxiliary oil chamber can be easily mounted from the bottom in the normal operating orientation side of the oil pan. In normal operating orientation, the oil pan is physically mounted at the bottom of the engine block of the engine.

Advantageously, the oil pan can be arranged on an internal combustion engine of a motor vehicle. However, the invention is not limited to internal combustion engines of motor vehicles. Rather, it can also be used in other types of internal combustion engines, in particular industrial engines.

In the oil pan, the engine oil of the engine oil circuit of the internal combustion engine is collected as a rule. The at least one auxiliary oil chamber provides additional oil collection volume. The at least one main oil chamber and the at least one auxiliary oil chamber are connected to at least one passage opening. In this way, the total available oil volume of the oil pan can be increased accordingly by means of at least one additional oil chamber. By suitable choice of the size of the at least one auxiliary oil chamber, the entire oil collection volume of the oil pan can be adapted to a corresponding need. For this purpose, it is not necessary to modify the tray main body, in particular the Motorverbindungsflansch. Additionally or alternatively, by the corresponding embodiment of at least an additional oil chamber the size and shape of the oil pan in total to an available space, especially an engine compartment of the motor vehicle to be adjusted.

Advantageously, the at least one additional closure body can be arranged within a vertical projection of the outermost boundaries of lateral walls of the at least one auxiliary oil chamber which are in the normal operating orientation. In this way, the additional closure body is not laterally over. It can be mounted in a space-saving way.

Advantageously, the oil sump, in particular the sump main body and / or at least one wall of the auxiliary oil chamber and / or at least one additional closure body, plastic or be made of plastic. Plastic is light. Plastic can be simply shaped. Made of plastic, a metal-free oil pan can be realized. Plastic parts can be easily connected to each other. Thus, the at least one auxiliary closure body can be easily connected to the tray main body.

Advantageously, the trough main body including at least a part of the at least one auxiliary oil chamber can be produced by a casting process, in particular an injection molding process, or a molding process, in particular a blow molding process, in particular of plastic. With such manufacturing methods, even complex shapes can be easily realized. The arrangement of the at least one additional outer opening on the underside of the at least one auxiliary oil chamber can simplify the demolding of the cast or molded part. For the manufacturing process required moldings or tools can be easily installed and removed through the at least one additional external opening.

Advantageously, the at least one additional closure body may comprise bent or kinked wall sections, in particular wall sections surrounding a volume. In this way, the at least one additional closure body can be realized as a container section. The at least one additional closure body can thus at least form and comprise a part of the additional volume of the additional oil chamber.

Advantageously, the at least one additional closure body may be a hollow body which is open on one side, in particular a cut cuboid.

The at least one additional closure body can advantageously have, in particular on the open side, with an auxiliary oil chamber connection flange. With the additional oil chamber connection flange, the at least one additional closure body can be tightly connected to a corresponding main body side connection flange of the tray main body. The main body side connecting flange may surround the at least one additional outer opening of the at least one auxiliary oil chamber.

By appropriate shaping of the at least one additional closure body can be achieved that the at least one additional outer opening can extend obliquely to a main oil chamber bottom of the tub main body. An area below the at least one additional outer opening can be used efficiently by the volume of the at least one additional closure body as additional volume of the at least one auxiliary oil chamber.

In an advantageous embodiment of the at least one additional closure body in the normal operating orientation at least a bottom portion of at least one additional oil chamber at least with.

Another part of the bottom portion may be integrally formed with the tray main body. In addition, the at least one additional closure body can also at least form part of a lateral wall section of the auxiliary oil chamber.

In a further advantageous embodiment, at least one upper section in the normal operating orientation, in particular a ceiling section and / or a side section, of the wall of the at least one auxiliary oil chamber may be formed integrally with the trough main body. In this way, the upper portions of the wall of the at least one auxiliary oil chamber are stable, fixed and / or tightly connected to the corresponding walls of the main oil chamber.

In a further advantageous embodiment, the at least one additional closure body can be connected to the tub main body in a material-locking and / or positive-locking and / or force-locking manner, in particular by means of an adhesive connection and / or welded connection and / or plug connection and / or screw connection and / or clamp connection. Such connections can be easily realized.

Advantageously, the at least one additional closure body and the trough main body can be connected to one another by means of mechanical, thermal and / or adhesive-technical, in particular material-locking, connections. In particular, when using plastic parts can advantageously be a welding method, in particular ultrasonic welding, mirror welding, vibration welding, hot gas welding, laser welding, high-frequency welding or the like, are used.

Advantageously, the connection of the at least one additional closure body and the trough main body can not be separated nondestructively. Non-destructively separable compounds can be advantageously used in life components. As a rule, such compounds can not be solved inadvertently, in particular. Thus, a tightness of the connection over the life of the oil pan can be realized. Alternatively, the compound can also be separated nondestructively.

In a further advantageous embodiment, the at least one additional closure body can be realized as a separate component or integrally with the trough main body. The realization of the tub main body and the at least one additional closure body as separate components can be easily realized. In particular, in the production of plastic, in particular by means of a molding process or casting process, so easily a shaping and / or a demolding can be realized.

Alternatively, the at least one additional closure body may also be integrally connected to the tray main body. Advantageously, the at least one additional closure body can be connected to the tray main body by means of a moldable, in particular bendable connection, in particular a film hinge. The at least one additional closure body can be bent so easily after the removal of the trough main body for closing the at least one additional outer opening in its end position and then fixed according to the trough main body. In this way, the at least one additional closure body can be held captive on the trough main body during the manufacturing process.

In a further advantageous embodiment, at least one structure, in particular at least one dome, can be realized between the main oil chamber and the at least one auxiliary oil chamber. The at least one structure can contribute to the stabilization and strengthening of the oil sump. Additionally or alternatively, the at least one structure may fulfill a function of attaching the oil pan to the engine block. In particular, the at least one structure may allow insertion and / or operation of fasteners from outside.

The at least one passage opening can be realized between sections of the at least one structure and / or within the at least one structure. At least one structure may extend through the at least one passage opening and interrupt it. Due to the additional outer opening and / or optionally the connection opening of the main oil chamber, the at least one structure can be easily accessible, in particular demoldable, during the production of the trough main body.

The at least one structure can make at least one mounting opening, in particular at least one screw hole, accessible from outside for connecting the oil sump to the engine block. At least one fastening means, in particular a screw, can be actuated by the at least one mounting opening.

Advantageously, the at least one structure may have at least one hollow section, in particular a hollow dome. The hollow section may extend between the main oil chamber and the at least one auxiliary oil chamber, in particular through the at least one passage opening or between a plurality of passage openings. The hollow section may lead from an underside of the oil sump to the top, in particular to the connection opening and / or optionally to the motor connection flange. In this way, the corresponding connecting means can be easily brought from the bottom of the oil pan through the hollow portion to the top and used there for connecting the oil pan with the engine block. Advantageously, the hollow portion, in particular the dome, be axial or coaxial with holes for fastening means, in particular screw holes, in the connecting flange of the oil sump to the engine block.

In a further advantageous embodiment, the at least one structure can be at least partially recessed from the at least one additional closure body. In this way, the at least one structure can be accessible from the outside when at least one additional closure body is mounted.

Brief description of the drawings

Further advantages, features and details of the invention will become apparent from the following description in which an embodiment of the invention with reference to the drawings is explained in more detail. The person skilled in the art will expediently also individually consider the features disclosed in the drawing, the description and the claims in combination and combine these into meaningful further combinations. It show schematically

1 to 11 an oil pan of an internal combustion engine of a motor vehicle in different perspectives and production phases.

In the figures, the same components are provided with the same reference numerals.

Embodiment (s) of the invention

In the 1 to 11 is an oil pan 10 an internal combustion engine of a motor vehicle in different perspectives and production phases shown. The oil pan 10 is attached in normal operating situations of the internal combustion engine down to an engine block, not shown, of the internal combustion engine. It serves to collect engine oil of the engine oil circuit of the internal combustion engine.

In the following, the term "top", "bottom" or "sideways" is referred to, this refers to the normal operating orientation of the oil pan on the internal combustion engine, as for example in the 1 and 2 is shown. The oil pan can be oriented in other operating situations of the internal combustion engine in other ways in space.

The oil pan 10 includes a tray main body 12 , in 1 above, which is integrally molded from plastic according to a plastic molding process. The tub main body 12 has a main oil chamber 14 and two additional oil chambers 16 on. The additional oil chambers 16 are on opposite, hereinafter referred to as "sides" designated outside the main oil chamber 14 are arranged.

At the top, the tub main body 12 a connection opening 18 to the main oil chamber 14 on. The connection opening 18 is circumferentially from a motor connection flange 22 surrounded with which of the tray main body 12 can be releasably connected to a corresponding motor-side connecting flange on the underside of the engine block of the internal combustion engine. The motor connection flange 22 has circumferentially distributed a plurality of continuous screw holes 24 can be plugged through the screws, not shown, for screwing with the motor-side connecting flange. On the bottom is the main oil chamber 14 with a major oil chamber floor 26 tightly closed.

The main oil chamber 14 is a total of approximately cuboid, with a transverse side wall of the tub main body 12 bent inwards. The additional oil chambers 16 are different in shape and size. In their construction are the additional oil chambers 16 substantially similar, so that their components are provided with the same reference numerals for the sake of clarity.

Transverse sidewalls 28 and a ceiling wall 30 the additional oil chambers 16 are each integral with respective longitudinal side walls of the main oil chamber 14 connected. The ceiling walls 30 limit the additional oil chambers 16 each above. On the main oil chamber 14 facing outside extends between the transverse side walls 28 and the respective ceiling wall 30 each an upper longitudinal side wall 32 , The side walls 28 and the ceiling walls 30 each have here not further interest indentations.

The ceiling walls 30 , the transverse side walls 28 and the upper longitudinal side walls 32 the additional oil chambers 16 form, if one disregards the above-mentioned indentations, respectively about the shell sides of an obliquely cut, hollow cuboid, which is open at the bottom. On the cut side of the cuboid is a main body side connecting flange 34 the respective auxiliary oil chamber 16 arranged. The main body side connection flange 34 surrounds an additional external opening 36 at the bottom of the respective auxiliary oil chamber 16 , The main body side connection flange 34 and the additional opening 36 extend approximately in a plane obliquely to the corresponding longitudinal side wall of the main oil chamber 14 and diagonally to the main oil chamber floor 26 ,

The main oil chamber 14 is by means of passages 38 , which are located in the longitudinal side wall, each with the additional oil chambers 16 connected. In the area of the passage openings 38 a plurality of hollow domes extend 40 each coaxial with one of the screw holes 24 from the engine connecting flange 22 to the main oil chamber floor 26 , The passages 38 run between adjacent domes 40 , The dome 40 are open at their lower ends to the environment. On the Domen 40 facing side rotate around the main body side connecting flanges 34 the dome 40 and save them. Through the interiors of the dome 40 Can the screws from the outside into the screw holes 24 be plugged and screwed with the engine-side connecting flange with a corresponding tool.

In ready-to-mount condition of oil sump 10 are the additional external openings 36 each by means of an additional closure lid 42 locked. The dome 40 be doing of the additional closure lids 42 recessed so that their interiors are accessible from the outside. The additional closure lid 42 each have approximately the shape of a hollow cuboid, which is cut along a diagonal plane. Approximately along the cutting plane, each additional closure lid 42 an auxiliary oil chamber connection flange 44 on. The auxiliary oil chamber connection flanges 44 fit in course, Size and contour to the corresponding main body side connecting flanges 34 , The auxiliary oil chamber connection flanges 44 are each with the main body side connecting flanges 34 tightly welded.

The additional closure lid 42 each form a bottom, a lower longitudinal side wall and two opposite lower transverse side walls of the auxiliary oil chamber 16 , The additional closure lid 42 are each within a perpendicular projection of the outermost boundary of the lateral side walls 28 and the longitudinal side wall 30 the corresponding auxiliary oil chamber 16 arranged. The additional closure lid 42 do not stand laterally over.

For the production of the oil pan 10 become the pan main body 12 and the additional cap 42 molded separately from plastic. Due to the oblique course of the main body side connecting flanges 34 and the additional external openings 36 is in the manufacture of the tray main body 12 with the corresponding hollow domes 40 a simple demoulding possible. The molds used can during demolding by the additional outer openings 36 and the connection opening 18 just be removed. The additional closure lid 42 be with their auxiliary oil chamber connection flanges 44 with the corresponding main body side connecting flanges 34 welded and so the additional outer openings 36 locked.

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• EP 2217794 B1 [0002]

Claims (7)

Oil pan ( 10 ) of an internal combustion engine, in particular of a motor vehicle, with a pan main body ( 12 ) comprising at least part of at least one main oil chamber ( 14 ) and at least part of at least one auxiliary oil chamber ( 16 ), wherein the at least one auxiliary oil chamber ( 16 ) in the normal operating orientation of the oil sump ( 10 ) laterally next to the main oil chamber ( 14 ) is arranged, at least part of a wall ( 28 . 30 ) the at least one auxiliary oil chamber ( 16 ) integral with the tray main body ( 12 ) is formed, the at least one auxiliary oil chamber ( 16 ) by means of at least one passage opening ( 38 ) with the main oil chamber ( 14 ) and the at least one auxiliary oil chamber ( 16 ) in the production at least one additional outer opening ( 36 ), which in the finished sump ( 10 ) with at least one additional closure body ( 42 ) is closed, characterized in that the additional closure body ( 42 ) in the normal operating orientation of the oil sump ( 10 ) on a spatially lower underside of the auxiliary oil chamber ( 16 ) is arranged. Oil sump according to claim 1, characterized in that the at least one additional closure body ( 42 ) in the normal operating orientation at least one bottom portion of the at least one auxiliary oil chamber ( 16 ) at least with forms. Oil sump according to claim 1 or 2, characterized in that at least one in the normal operating orientation upper portion, in particular a ceiling portion ( 30 ) and / or a side section ( 28 ), the wall of the at least one auxiliary oil chamber ( 16 ) integral with the tray main body ( 12 ) is trained. Oil sump according to one of the preceding claims, characterized in that the at least one additional closure body ( 42 ) material-locking and / or positive and / or non-positive, in particular by means of an adhesive connection and / or welded connection and / or plug connection and / or screw connection and / or clamping connection, with the tub main body ( 12 ) connected is. Oil sump according to one of the preceding claims, characterized in that the at least one additional closure body ( 42 ) as a separate component or integral with the tray main body ( 12 ) is realized. Oil sump according to one of the preceding claims, characterized in that between the main oil chamber ( 14 ) and the at least one auxiliary oil chamber ( 16 ) at least one structure, in particular at least one dome ( 40 ), is realized. Oil sump according to claim 6, characterized in that the at least one structure ( 40 ) of the at least one additional closure body ( 42 ) is at least partially omitted.

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