Rocker arm of an internal combustion engine valve train

A valve train, internal combustion engine technology, applied in the direction of machine/engine, mechanical equipment, engine components, etc., can solve the problems of high cost and processing cost, low wear and guidance accuracy, etc.

Inactive Publication Date: 2012-02-08
SCHAEFFLER TECH AG & CO KG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The disadvantage here is the high costs and processing effort due to the additional pipe section and its fastening on the rocker arm
If there is no pipe section, ie with the described integral bearing bushing, at least if the roller bearings are omitted, as already mentioned, problems of guiding accuracy with as little wear as possible arise

Method used

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  • Rocker arm of an internal combustion engine valve train
  • Rocker arm of an internal combustion engine valve train
  • Rocker arm of an internal combustion engine valve train

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0023] figure 1 A rocker arm of a valve train of an internal combustion engine is shown. The rocker body 1 is advantageously produced in one piece from sheet steel using suitable forming methods. It essentially has two side walls 2 , 3 connected to each other by a cross member 4 . The crossbeam 4 connects these side walls 2, 3 at the underside of the side walls, so that the rocker body 1 forms a U-like cross section. The side walls 2 , 3 have in the middle 5 two aligned bore holes 6 , 7 designed as bores for mounting the rocker arm on a shaft not shown or on an equivalent center of rotation.

[0024] On the cross member 4, a half bearing shell 8 is formed in alignment with the bores 6, 7 in the region of them. This half bearing shell 8 is used to guide the shaft or to guide a rocker arm on the shaft. The half shell 8 has a first radius 9 and a second radius 10 offset therefrom, wherein the second radius 10 opens into a bead 11 which forms the end of the cross member 4 . I...

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Abstract

The invention relates to a rocker arm of an internal combustion engine valve train, comprising a rocker body (1) made of plate material, the rocker body has two side walls (2, 3) connected by a beam (4), the side walls The wall has two mutually aligned holes (6, 7) in the middle (5) for pivotable mounting on an axle. In order to achieve a more reliable guidance of the rocker arm on the shaft at low cost, a shaft bearing in the form of a half bearing shell (8) aligned with the holes (6, 7) is integrated in the cross member (4).

Description

technical field [0001] The invention relates to a rocker arm of a valve train of an internal combustion engine, which comprises a rocker body made of sheet material, which has two side walls connected by cross beams, and the side walls have two mutually aligned holes in the middle for Swingably mounted on a shaft. Background technique [0002] Rocker arms made of sheet metal are known as cam followers for valve control of internal combustion engines in motor vehicles. They are especially suitable for small engines such as those found in two-wheeled vehicles or small equipment. Their main advantage over conventional rocker arms made of castings or forgings is their lower production costs, machining costs and weight. In addition, they can be easily adapted to narrow or overlapping structural space conditions. [0003] According to a conventional construction, the structure mainly consists of two sides connected by beams, thus forming a U-shaped or H-shaped cross-section. A...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F01L1/18
CPCF01L1/20F01L1/181
Inventor F・胡施卡R・卡姆P・施皮策M・舍韦
Owner SCHAEFFLER TECH AG & CO KG
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