DE102008008584A1 - Sliding bearing shell for split sliding bearing in internal combustion engine, has radially revolving processing cavities on inner surface, and lubricant slot running on side of shell and not before bevel of inner surface - Google Patents

Abstract

The shell (1) has an inner surface (1') including a bevel (4) and a radially revolving lubricant slot (3) at a separation plane (2). Radially revolving processing cavities are provided on the inner surface, and the lubricant slot runs on a side of the shell and not before the bevel. The processing cavities measure between 0.001 millimeter and 0.1 millimeter. A rotating shaft is arranged in a sliding bearing at a rotating direction. A spin out of the lubricant slot is remote from the bevel between 1 and 45 degrees.

Description

The The invention relates to a sliding bearing shell with the features of the Preamble of claim 1.

It is based on the European patent EP 1 510 790 B1 out. From this, a sliding bearing shell for a split sliding bearing is known, the inner surface at the parting plane of the split sleeve bearing a chamfer or a Druckentlastungsfase, also called "crush relief", further comprises the plain bearing shell on a radially encircling lubricant groove on both sides of the plain bearing shell The interaction of the lubricant groove and bevel ensures a defined lubricant drainage.

adversely in the known state of the art is the very high lubricant requirement for a generic plain bearing.

task It is the object of the present invention to provide a measure for lubricant consumption reduction show.

These The object is achieved by the features in the characterizing part of the claim 1 solved.

By the embodiment of the invention is for all necessary speeds sufficient lubrication of the plain bearing achieved and significantly reduces the lubricant requirement, since the radial circumferential Machining depressions in the axial direction like a lubricant lock Act. By the measure according to the invention becomes the lubricant requirement for the split sleeve bearing significantly reduced, creating a smaller lubricant pump for Use can come. This in turn leads to a lower Power dissipation. When using the inventive Slide bearing in an internal combustion engine is thus in an advantageous Way also reduces fuel consumption.

Especially Preferably, the lubricant groove passes gem. claim 2 in the direction of rotation of an inserted shaft not to the chamfer.

Prefers is the depth of the machining indentations between 0.001 mm and 0.1 mm according to claim 3.

Of the Angle range according to claim 4 is also particularly preferred.

in the Below, the invention with reference to two figures closer explains:

1 shows a plan view of a schematic representation of a first embodiment of a plain bearing shell according to the invention.

2 shows a plan view of a schematic representation of a second embodiment of a sliding bearing shell according to the invention.

in the The following apply to identical components in both figures the same reference numbers.

1 shows a plan view of a schematic representation of a first embodiment of a plain bearing shell according to the invention 1 , The plain bearing shell 1 has an inner surface 1' on that as a sliding surface for a in 1 not shown shaft is used. The plain bearing shell 1 is intended for a split plain bearing, in particular for an internal combustion engine. There it can be used, for example, for a crankshaft or a camshaft bearing. In the inner surface 1' is a lubricant groove 3 incorporated, the eccentric to the inner surface 1' is. The lubricant groove 3 is preferably produced by milling. At a dividing level 2 of the split journal bearing has the inner surface 1' one chamfer each 4 which, in other embodiments, may also be a pressure relief bevel, a so-called "crush, relief." According to the invention, the plain bearing shell 1 On its inner surface radially circumferential machining recesses, wherein the Schmiermittelsut 3 on at least one side of the plain bearing shell 1 not to the chamfer runs. The distance of an outlet of the lubricant groove 3 from the chamfer is preferably between 1 ° and 45 °. The machining recesses are preferably between 0.001 mm and 0.1 mm. The machining recesses can be produced, for example, by milling, spindles or turning. In the present embodiment, the lubricant groove extends 3 not on both sides to the chamfer 4 ,

2 shows a plan view of a schematic representation of a second embodiment of a sliding bearing shell according to the invention 1 , In 2 is a wave 5 shown rotatable on the inner surface 1' in the plain bearing shell 1 is stored. One direction of rotation of the shaft 5 is shown with an arrow. In this second particularly preferred embodiment, the lubricant groove protrudes 3 only in the direction of rotation of the shaft 5 not to the chamfer 4 , On the opposite direction of rotation of the plain bearing shell 1 protrudes the lubricant groove 3 to the chamfer 4 ,

Due to the design according to the invention sufficient lubrication of the sliding bearing is achieved for all necessary speeds and significantly reduces the lubricant requirement, since the radially encircling machining recesses act in the axial direction as a lubricant lock. The inventive measure the lubricant requirement for the split plain bearing is substantially re reduced, whereby a smaller lubricant pump can be used. This in turn leads to a lower power loss. When using the sliding bearing according to the invention in an internal combustion engine, the fuel consumption is thus reduced in an advantageous manner.

1

plain bearing shell

1'

inner surface

2

parting plane

3

lubricant groove

4

chamfer

5

wave

QUOTES INCLUDE IN THE DESCRIPTION

This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Cited patent literature

• - EP 1510790 B1 [0002]

Claims (4)

Plain bearing shell ( 1 ) for a split plain bearing, in particular for an internal combustion engine, wherein an inner surface ( 1' ) of the sliding bearing shell at a parting plane ( 2 ) a chamfer ( 4 ) and a radially encircling lubricant groove ( 3 ), characterized in that the plain bearing shell ( 1 ) on the inner surface ( 1' ) has radially circumferential machining recesses and the lubricant groove ( 3 ) on at least one side of the plain bearing shell ( 1 ) not to chamfer ( 4 ) runs. Plain bearing shell according to claim 1, wherein in the sliding bearing a rotatable shaft with a rotational direction can be arranged, characterized in that the lubricant groove ( 3 ) in the direction of rotation of the shaft ( 5 ) not to the chamfer ( 4 ) runs. Plain bearing shell according to claim 1 or 2, characterized characterized in that the machining indentations are between 0.001 mm and 0.1 mm deep. Slide bearing shell according to one of the claims 1 to 3, characterized in that an outlet of the lubricant groove ( 3 ) between 1 ° and 45 ° from the chamfer ( 4 ) is removed.