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independent tensioner

A tensioning device and tensioning technology, which is applied in transmission devices, belts/chains/gears, mechanical equipment, etc., can solve the functional hazards of the tensioning device, and cannot guarantee reliable and durable sealing between the piston hole and the tensioning piston, etc. question

Active Publication Date: 2020-09-29
IWIS MOTORSYSTEME GMBH & CO KG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the high pressure in the high-pressure chamber, the high number of load changes, the high temperature and the high sliding speed of the tensioning piston, a reliable and permanent connection between the piston bore and the tensioning piston cannot be guaranteed during operation. the seal
In the event of such a seal failure, however, the entire function of the independent tensioning device is jeopardized

Method used

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Examples

Experimental program
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Embodiment Construction

[0029] combustion motor in figure 1 The control chain transmission 1 shown in the figure comprises two upper camshaft sprockets 2, one lower crankshaft sprocket 3, a control chain 4 wound around them, a A guide rail 5 guiding the control chain 4 in the tension side of the device 1 and a pivotably arranged tension rail 6 in the loose side of the control chain drive 1 Squeeze towards the control chain 4. The tensioning rail 6 is pressed onto the control chain 4 by means of a separate tensioning device 8 fastened in the combustion motor. In this case, the separate tensioning device 8 is designed as a flange tensioner and is flanged to the motor component 7 via the fastening means 12 , see also figure 2 . In this case, the piston rod 9 of the tensioning device 8 presses against the pressing area 10 of the pivotably arranged tensioning rail 6 and thus pushes it into the loose side of the control chain drive 1 . The control chain 4 is tensioned.

[0030] figure 2 The configu...

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Abstract

The invention relates to an autonomous clamping device, in particular for a drive chain of an internal combustion engine, comprising a housing and a clamping piston which is guided in a movable manner in a piston bore of the housing. A high-pressure chamber and a low-pressure chamber for a hydraulic fluid are formed in the piston bore, and the clamping piston separates the high-pressure chamber from the low-pressure chamber. The clamping piston is equipped with a piston rod which extends outwards from the clamping piston through the low-pressure chamber. A hydraulic fluid reservoir with a volume-equalizing device and a damping device for the retracting movement of the clamping piston into the piston bore are also provided.

Description

technical field [0001] The invention relates to an independent tensioning device, in particular for a drive chain of a combustion motor, which has a housing and is guided displaceably in a piston bore of the housing a tensioning piston, wherein a high-pressure chamber and a low-pressure chamber for hydraulic medium are configured in the piston bore and the tensioning piston separates the high-pressure chamber from the low-pressure chamber; and a piston rod, which extending from the tensioning piston through the low pressure chamber; a reservoir for hydraulic medium; a check valve; a volume compensation mechanism; and having damping for the movement of the tensioning piston into the piston bore mechanism. Among other things, the invention relates to a chain drive for a combustion motor with such an independent tensioning device. Background technique [0002] Simple tensioning devices used as chain tensioners or belt tensioners in combustion motors have a pressure chamber be...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16H7/08
CPCF16H7/08F16H7/0836F16H2007/0806F16H2007/0812F16H7/1236F16H2007/0859
Inventor F.齐默曼B.施奈德
Owner IWIS MOTORSYSTEME GMBH & CO KG
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