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Camshaft adjuster with a locking system

A technology of blocking devices and camshafts, which is applied to valve devices, machines/engines, mechanical equipment, etc., and can solve problems such as adjustment errors and vibrations

Active Publication Date: 2008-10-29
SCHAEFFLER TECH AG & CO KG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Furthermore, the problem is that, for the above-mentioned reasons and due to tolerance reasons, it is practically impossible to adjust a sufficiently small angular clearance, preferably less than 0.2 degrees, so that an undesired adjustment error and possible vibrations, especially rotational vibration

Method used

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  • Camshaft adjuster with a locking system
  • Camshaft adjuster with a locking system
  • Camshaft adjuster with a locking system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0026] 1 to 11 show in detail a swivel angle adjustment device denoted by reference numeral 1 which has a rotary element 2 with a cover 3 in which an opening 4 is made. The cover 3 is arranged in the rotary element 2 and has cavities (not shown) in which the blades of a rotor, indicated by reference numeral 5, are arranged. The rotor 5 is non-rotatably connected to a camshaft of a piston internal combustion engine (not shown), while the rotating element 2 is connected via a gear, chain or toothed belt drive to the drive shaft of a piston internal combustion engine (likewise not shown) functional connections. In the bore of the rotor 5 is supported a blind bolt indicated by the reference numeral 6, which is prestressed in the direction of the opening 4 by means of a pressure spring 7 and can be withdrawn from the opening by means of hydraulic pressure (not shown in detail). out). The closing screw 6 is provided with a cavity 8 (see in particular FIG. 2 ), into which the compr...

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PUM

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Abstract

Device for adjusting the angle of rotation between two rotating shafts, in particular between a drive shaft of a reciprocating-piston internal combustion engine and a camshaft for actuating gas exchange valves, with a rotation element which is connected in a rotationally fixed manner to the drive shaft, with a rotor which is connected in a rotationally fixed manner to the camshaft, with an angle of rotation adjusting system and with a locking device which has at least one locking bolt, which is mounted movably in one of the components, and at least one corresponding opening in the other component, wherein the locking bolt can be displaced into and out of the opening by means of spring and / or hydraulic force.

Description

Background technique [0001] A device of this type for adjusting the angle of rotation is known from DE-196 23 818 A1. In this swivel angle adjustment device, the rotor has blades and the rotary element has corresponding recesses, so that a swivel angle adjustment in one direction is possible by means of hydraulic pressurized fluid squeezed between the blades and the swivel element on one side, On the opposite side, however, the pressure load enables a rotational angle adjustment in the other direction of rotation. [0002] In order to be able to fix the rotor relative to the rotating element, for example in an end position, a closing device with a closing screw is provided in one of the components and an opening is provided in the other component, wherein a spring force presses the closing screw into the opening , while the hydraulic fluid pushes the blind bolt out of the opening. The distribution of spring force and hydraulic force for the closing bolt is advantageous in th...

Claims

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Application Information

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IPC IPC(8): F01L1/344
CPCF01L1/3442
Inventor T·克莱伯
Owner SCHAEFFLER TECH AG & CO KG