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Mass balancing mechanism

A technology of mass balance and transmission mechanism, which is applied in the direction of engine components, mechanical equipment, vibration suppression adjustment, etc., can solve the problems of high friction power, loss, etc., and achieve the effect of sufficient lubrication and/or cooling

Inactive Publication Date: 2014-07-16
SCHAEFFLER TECH AG & CO KG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is known that sliding bearings produce significantly higher frictional power losses than rolling bearings, so that balancing shafts with rolling bearings are increasingly used in large numbers

Method used

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Examples

Experimental program
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Embodiment Construction

[0016] exist figure 1 with figure 2 Shown in side view or in top view is one of two counter-rotating balance shafts 1 at double the crankshaft speed, which engages with needle bearings 2 to form part of a mass balance transmission for balancing the second stage of an internal combustion engine free inertia force. The balancing shaft 1 accommodated in radial rolling bearing in the bearing housing 3 of the undivided housing 4 of the internal combustion engine consists of a bearing shaft 5 and two unbalanced masses 6 which are screwed to the bearing shaft 5 here by means of screws Combined, wherein, the support shaft 5 is made of a precision tube made of rolling bearing steel. The screw-in points 7 are shown. The screwing of the unbalanced mass 6 onto the matching connecting section 8 of the bearing shaft 5 takes place after the bearing shaft 5 has been pushed into the bearing seat 3 because the diameter of the enveloping circle of the unbalanced mass 6 is larger than Housin...

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Abstract

The transmission has a needle roller bearing (2) for mounting a compensation shaft (1). The bearing has needle rollers (11) that roll on a bearing point that is designed as an inner raceway. The raceway has a width that varies in a peripheral direction, so that the raceway is loaded by a radial load of an unbalanced mass (6). The width of the raceway is smaller than a length of the needle rollers, where the width tapers or interrupted in a peripheral direction. The taper or interruption of the inner raceway is formed by trough-shaped depressions (15) molded locally in a carrier shaft (5).

Description

technical field [0001] The invention relates to a mass-balance transmission for balancing the inertial forces and / or moments of inertia of an internal combustion engine. The mass balance transmission comprises a balance shaft with a tubular support shaft having bearing points (Lagerstelle) formed on its outer periphery for radial support of the balance shaft in the internal combustion engine; A connected unbalanced mass which engages with the bearing shaft at a connection section of the bearing shaft running laterally at the bearing point. Background technique [0002] This mass-balanced drive mechanism comes from: "Der neue 1.8-I-Vierzylinder-Ottomotor von Mercedes-Benz (New Mercedes-Benz 1.8-I four-cylinder gasoline engine)". The balanced drive gearbox consists of two counter-rotating balance shafts at double the crankshaft speed to balance the second order free inertial forces. In the case of a designed balancing shaft with a tubular bearing shaft, the balancing shaft ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16F15/26F16C19/22F16C33/58
CPCY10T74/2183F16F15/268F16F15/267F16C19/466F16C33/585F16C2361/53
Inventor 西格弗里德·蒂施
Owner SCHAEFFLER TECH AG & CO KG
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