DE102019130790A1 - Radial outer bearing of an internal combustion engine and internal combustion engine - Google Patents

Abstract

Radial outer bearing (17) of an internal combustion engine, with a bearing housing (18), via which the radial outer bearing (17) can be mounted on the internal combustion engine, with a plain bearing shell (19) received in the bearing housing (18), the bearing housing (18) also having a shaft seal ( 20) records.

Description

The invention relates to an outer radial bearing of an internal combustion engine. The invention also relates to an internal combustion engine.

Internal combustion engines known from practice have a cylinder crankcase, a crankshaft of the internal combustion engine being supported in the cylinder crankcase via crankshaft main bearings. Connecting rods, via which pistons of cylinders of the internal combustion engine are coupled to the crankshaft, engage the crankshaft of the internal combustion engine.

The crankshaft of the internal combustion engine protrudes at least on one coupling side of the cylinder crankcase from the cylinder crankcase with a crankshaft section to which an output can be coupled via a clutch. If necessary, a crankshaft section also protrudes from the cylinder crankcase on the clutch opposite side of the internal combustion engine, to which a power take-off (PTO) can then be coupled. A crankshaft section protruding from the cylinder crankcase is supported by an outer radial bearing. Furthermore, a crankshaft section protruding from the cylinder crankcase is sealed by a shaft seal. In internal combustion engines known from practice, the radial outer bearing and shaft seal are designed as separate assemblies with separate housings. Furthermore, different radial bearings and different shaft seals are used in the area of the clutch side and the opposite side of the clutch. Internal combustion engines known from practice therefore have a complex structure with a large number of different assemblies.

There is a need for a radial outer bearing and for an internal combustion engine with a simpler structure.

Proceeding from this, the invention is based on the object of creating a novel radial outer bearing of an internal combustion engine and a corresponding internal combustion engine.

This object is achieved by a radial outer bearing of an internal combustion engine according to claim 1. The bearing housing also accommodates a shaft seal. In the radial bearing according to the invention, the shaft seal is integrated into the bearing housing of the radial outer bearing. One and the same housing of the radial outer bearing accordingly accommodates the shaft seal on the one hand and the plain bearing shell of the radial outer bearing on the other hand. Such a radial outer bearing not only provides functional integration for radial bearings and shaft sealing, but also has a simpler structure and thus simplifies the structure of an internal combustion engine.

According to an advantageous development, the bearing housing has a housing flange via which it can be mounted on both a clutch side and an opposite clutch side of the internal combustion engine, in particular on the clutch side on a cylinder crankcase of the internal combustion engine and on the opposite clutch side on a casing cover of the internal combustion engine. This makes it possible to use identical parts on the coupling side and the opposite coupling side.

The internal combustion engine according to the invention is defined in claim 4. The internal combustion engine which has the radial outer bearing according to the invention has a simple structure.

According to an advantageous development, the radial outer bearing, which supports the crankshaft section protruding from the cylinder crankcase on the clutch side, and the radial outer bearing, which supports the crankshaft section protruding from the cylinder crankcase on the coupling side, are identical parts. This allows the structure of the internal combustion engine to be simplified further.

• 1 eine stark schematisierte Seitenansicht auf eine Kupplungsseite eines Zylinderkurbelgehäuses einer Brennkraftmaschine;
• 2 einen ausschnittweisen Querschnitt der Brennkraftmaschine im Bereich der Kupplungsseite derselben;
• 3 eine stark schematisierte Seitenansicht auf einen Verschalungsdeckel des Zylinderkurbelgehäuses der Brennkraftmaschine im Bereich der Kupplungsgegenseite derselben; und
• 4 einen ausschnittweisen Querschnitt der Brennkraftmaschine im Bereich der Kupplungsgegenseite derselben.

Preferred developments of the invention emerge from the subclaims and the following description. Exemplary embodiments of the invention are explained in more detail with reference to the drawing, without being restricted thereto. It shows:

• 1 a highly schematic side view of a clutch side of a cylinder crankcase of an internal combustion engine;
• 2 a partial cross section of the internal combustion engine in the area of the clutch side of the same;
• 3 a highly schematic side view of a casing cover of the cylinder crankcase of the internal combustion engine in the area of the opposite clutch side of the same; and
• 4th a partial cross-section of the internal combustion engine in the area of the clutch opposite side of the same.

The invention relates to a radial outer bearing of an internal combustion engine and an internal combustion engine.

1 and 3 show side views of a cylinder crankcase 10 an internal combustion engine, namely 1 on one coupling side 11 of the cylinder crankcase 10 and 3 on one in the area of a coupling opposite side 12th of Crankcase 10 built-in casing cover 13th .

In the cylinder crankcase 10 the internal combustion engine is a crankshaft 14th stored via crankshaft main bearings, not shown in detail. On the crankshaft 14th attack connecting rods, not shown, via which pistons of cylinders of the internal combustion engine with the crankshaft 14th are coupled.

According to 2 protrudes the crankshaft 14th with a crankshaft section 14a from the cylinder crankcase 10 in the area of the clutch side 11 out, at this crankshaft section 14a a coupling flange 15th is trained.

According to 4th protrudes the crankshaft 14th with a crankshaft extension section 14b also on the opposite side of the coupling 12th of the bearing housing 10 from the bearing housing 10 out, the crankshaft extension section 14b with the actual crankshaft 14th about screws 16 is firmly connected.

To the crankshaft section 14a , the one on the coupling side 11 of the cylinder crankcase 10 from the cylinder crankcase 10 protrudes, a main output can be coupled.

To the crankshaft extension section 14b the crankshaft 14th , the one on the opposite side of the coupling 12th from the cylinder crankcase 10 protrudes, a power take-off, which is also referred to as a PTO, can be coupled.

The one from the cylinder crankcase 10 in the area of the clutch side 11 outstanding section 14a as well as that from the cylinder crankcase 10 in the area of the opposite side of the coupling 12th outstanding crankshaft extension section 14b the crankshaft 14th each have a radial outer bearing 17th on the cylinder crankcase 10 stored.

The radial outer bearing according to the invention 17th has a bearing housing 18th , the bearing housing 18th on the one hand a plain bearing shell 19th and on the other hand a shaft seal 20th records. One and the same bearing housing 18th therefore takes on two functional assemblies, namely the plain bearing shell 19th as well as the shaft seal 20th There is no need for a separate housing for the bearing and the shaft seal. This simplifies the structure of the internal combustion engine.

The radial outer bearing according to the invention 17th , namely the bearing housing 18th the same, which both the plain bearing shell 19th as well as the shaft seal 20th accommodates, has a housing flange 21 , the radial outer bearing 17th via this housing flange 21 both on the coupling side 11 , namely to the cylinder crankcase 10 in the area of the clutch side 11 , also on the opposite side of the coupling 12th , namely on the casing cover 13th of the bearing housing 10 in the area of the opposite side of the coupling 12th , can be connected or mounted.

In an internal combustion engine according to the invention in which the radial outer bearing according to the invention 17th is used, radial outer bearings are used 17th at least in the area of the clutch side 11 used for the on the coupling side 11 from the cylinder crankcase 10 outstanding crankshaft section 14a the crankshaft 14th to store. This is then the cylinder crankcase 11 preferably undivided in the circumferential direction and accordingly formed in one piece. The radial outer bearing according to the invention is preferably used 17th on an internal combustion engine according to the invention also in the area of the opposite clutch side 12th to use to the on the coupling opposite side 12th from the cylinder crankcase 10 outstanding crankshaft section 14b the crankshaft 14th to store. This is then the radial outer bearing 17th in the area of the opposite side of the coupling 12th with the casing cover 13th connected, the formwork cover 13th is undivided and therefore formed in one piece.

Then if both on the clutch side 11 as well as in the area of the coupling opposite side 12th a radial outer bearing according to the invention 17th is used, these are then identical parts.

With the invention, the structure of an internal combustion engine can be simplified. The radial bearing function and the shaft sealing function are integrated in one component in such a way that the bearing housing 18th of the radial outer bearing according to the invention 17th both the plain bearing shell 19th for the bearing function as well as the shaft sealing 20th records. In the area of the clutch side 11 and coupling opposite side 12th there are identical radial outer bearings 17th used as identical parts.

List of reference symbols

10

Cylinder crankcase

11

Clutch side

12th

Opposite coupling side

13th

Casing cover

14th

crankshaft

14a

Crankshaft section

14b

Crankshaft section

15th

Coupling flange

16

screw

17th

Radial outer bearing

18th

Warehouse

19th

Plain bearing shell

20th

Shaft seal

21

Housing flange

Claims (8)

Radial outer bearing (17) of an internal combustion engine, with a bearing housing (18), via which the radial outer bearing can be mounted on the internal combustion engine, with a plain bearing shell (19) received in the bearing housing (18), characterized in that the bearing housing (18) also has a shaft seal ( 20) records. Radial outer bearing according to Claim 1 , characterized in that the bearing housing (18) has a housing flange (21) by means of which it can be mounted both on a clutch side (11) and on an opposite clutch side (12) of the internal combustion engine. Radial outer bearing according to Claim 1 or 2 , characterized in that the bearing housing (18) can be mounted via a housing flange (21) both on a cylinder crankcase (10) of the internal combustion engine and on a casing cover (13) of the internal combustion engine. Internal combustion engine, in particular marine diesel engine, with a cylinder crankcase (10) which has a clutch side (11) and an opposite clutch side (12), with a crankshaft (14) mounted in the cylinder crankcase (10) via main crankshaft bearings, the crankshaft on the clutch side (11) with a crankshaft section (14a) protrudes from the cylinder crankcase (10) and is mounted on this crankshaft section via an outer radial bearing (17), characterized in that the outer radial bearing (17) according to one of the Claims 1 to 3 is trained. Internal combustion engine after Claim 4 , characterized in that the radial outer bearing (17), which supports the crankshaft section (14a) protruding from the cylinder crankcase (10) on the clutch side (11), is mounted on the cylinder crankcase (10), which is undivided. Internal combustion engine after Claim 4 or 5 , characterized in that the crankshaft (14) on the coupling opposite side (12) with a crankshaft section (14b) protrudes from the cylinder crankcase (10) and is supported on this section via an outer radial bearing (17) which, according to one of the Claims 1 to 3 is trained. Internal combustion engine after Claim 6 , characterized in that the radial outer bearing (17), which supports the crankshaft section (14b) protruding from the cylinder crankcase (10) on the opposite side of the clutch (12), is mounted on a casing cover (13) of the cylinder crankcase (10) which is undivided . Internal combustion engine after Claim 6 or 7th , characterized in that the radial outer bearing (17), which supports the crankshaft section protruding from the cylinder crankcase (10) on the clutch side (11), and the radial outer bearing (17), which supports the crankshaft section on the opposite side of the clutch (12) from the cylinder crankcase (10) the protruding crankshaft section, identical parts are identical.

Images