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Traction mechanism for an internal combustion engine

A technology of traction mechanism and internal combustion engine, which is applied in the direction of machines/engines, mechanical equipment, engine components, etc., to achieve the effects of increasing service life, reducing risks, and optimizing costs

Inactive Publication Date: 2010-12-08
SCHAEFFLER TECH AG & CO KG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this solution the traction unit has no tension adjuster

Method used

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  • Traction mechanism for an internal combustion engine
  • Traction mechanism for an internal combustion engine
  • Traction mechanism for an internal combustion engine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0042] figure 1 The traction mechanism 1 a is shown in the installed state, which is provided as a control drive for driving two camshafts of the internal combustion engine 3 . In this solution, a traction device 4a designed as an endless belt is connected to a driven pulley 5 of non-circular configuration, i.e. a toothed pulley is directly connected to the crankshaft 6 of the internal combustion engine 3 and has two driving pulleys assigned to the camshafts 2a, 2b 7a, 7b. The traction mechanism 1a, which is likewise designed as a control drive, is integrated into the internal combustion engine 3 and the closed installation space 8 in front of the end face of the internal combustion engine. The installation space 8 is connected to the crank space of the internal combustion engine 3 by holes 9 , 10 , thereby ensuring the escape of oil mist and / or lubricating oil, which has a friction-reducing effect in particular on the traction mechanism 1a.

[0043] Furthermore, the tractio...

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PUM

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Abstract

The present invention relates to a traction mechanism (1a) of an internal combustion engine (3), said traction mechanism comprising a traction device (4a) which is designed as an endless belt and which partially surrounds a driven wheel (5) and at least one driving wheel (7a, 7b). In this case, at least one driven wheel (5) and / or one driving wheel (7a, 7b) of the traction mechanism (1a) has a nonround design. Furthermore, the traction mechanism (1a) is inserted in a construction space (8) acted upon by an oil mist.

Description

technical field [0001] The invention relates to a traction mechanism for driving at least one camshaft or at least one component of an internal combustion engine. The traction mechanism includes an endless belt as a traction device, which connects the driven wheel and at least one driving wheel, and the tension adjuster pre-stresses the traction mechanism. Background technique [0002] DE 4340865 A1 discloses a tensioner for a traction mechanism which comprises a positioning eccentric which is fixed in the operating state. The eccentric, adjusted by a torsion spring and running around the positioning eccentric, is connected to a rolling bearing on which the tension roller is rotatably fitted. In the mounted state, the tension rollers are supported on the traction device of the traction mechanism and automatically ensure that the traction device has a sufficient prestressing force. Also due to aging of the traction device, the tension adjuster allows independent readjustmen...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16H7/02F01L1/02F01L1/356F16H7/08F16H7/12
CPCF01L1/024F01L1/356F01L1/02F16H7/023F16H2007/0865F16H7/0836F16H7/1236F16H7/08F16H2035/003F16H2007/0872F16H2007/081F16H7/1281
Inventor 雷纳·普夫卢格马丁·阿萨尔
Owner SCHAEFFLER TECH AG & CO KG