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A camshaft adjuster with a central bolt

A technology of camshaft adjusters and camshafts, which is applied in the direction of machines/engines, engine components, mechanical equipment, etc., and can solve the problems of adding camshaft adjusters, increasing the size of the front cover, increasing manufacturing costs, etc.

Inactive Publication Date: 2018-04-13
SCHAEFFLER TECH AG & CO KG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the size of the front cover is increased and additional manufacturing costs are increased due to the provision of the support device on the front cover. In addition, the separately formed support device also increases the complexity of the assembly of the camshaft adjuster and increases the manufacturing cost.

Method used

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  • A camshaft adjuster with a central bolt
  • A camshaft adjuster with a central bolt
  • A camshaft adjuster with a central bolt

Examples

Experimental program
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Embodiment Construction

[0013] Depend on Figure 1 to Figure 3 The camshaft adjuster 100 according to the invention is shown with a stator 3 and a rotor 2 connected to the camshaft 7 in a rotationally fixed manner, wherein the stator 3 is driven by a crankshaft of an internal combustion engine (not shown). Arranged between the stator 3 and the rotor 2 are a plurality of working chambers which are formed by radially inwardly projecting projections of the stator 3 , which are supported on the radially inner diameter of the rotor 2 . The working chamber is divided into two working chambers respectively by the vanes (which can be formed separately or integrally) provided on the rotor 2, and pressure medium is applied to these working chambers, so that the relative relationship between the rotor 2 and the stator 3 can be changed. The relative rotational position of the camshaft can also be changed relative to the crankshaft.

[0014] A front cover 1 and a rear cover 4 are respectively provided on the fro...

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PUM

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Abstract

A camshaft phaser having a central bolt is provided. The camshaft phaser includes: a stator and a rotor which is connected with a camshaft in a torsion-resistant manner and accommodated in the stator; a front cover and a rear cover respectively set at a front side and a back side of the stator; and a compression spring having a first end buckled with the front cover, and a second end fixed to the rotor, wherein the central bolt is installed inside the camshaft phaser through an opening set on the front cover, and the central bolt is configured with a guide part which is adapted for pushing the compression spring to an accurate position. Therefore, a supporting apparatus for supporting the spring is no longer required to be configured in the camshaft phaser, structure of the camshaft phaser is optimized, and manufacturing cost of the camshaft phaser is reduced.

Description

technical field [0001] The invention relates to the technical field of internal combustion engines, in particular to a camshaft adjuster with a central bolt applied to the technical field of internal combustion engines. Background technique [0002] In internal combustion engines with mechanical valve control, the gas exchange valve is controlled by a cam of a camshaft driven by the crankshaft, wherein the arrangement and shape of the cams determine the position of the valve for a defined phase between the crankshaft and the camshaft. Gas distribution phase. Depending on the current operating conditions of the internal combustion engine, the valve timing can be influenced by changing the phase between the crankshaft and the camshaft, thereby enabling beneficial effects such as reducing fuel consumption and the production of harmful substances. This device for selectively adjusting the phase between the crankshaft and the camshaft is called a camshaft adjuster. [0003] Chi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F01L1/344
CPCF01L1/344F01L1/047F01L1/3442F01L2001/3445F01L2001/34456F01L2001/34483
Inventor 何艳桦欧成
Owner SCHAEFFLER TECH AG & CO KG