Turbocharger Vane Lever Protuberance Axial Stop Design
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Solution Overview
Problem
Existing turbocharger designs with adjustable guide vanes experience axial movement and frictional wear due to the interaction between the adjustment ring and stationary axial stops, leading to operational inefficiencies and increased maintenance needs.
Innovation Solution
The guide apparatus incorporates vane levers with a protuberance that serves as an axial stop for the adjustment ring, allowing for minimal axial movement and reduced wear by rotating in unison with the adjustment ring, eliminating the need for stationary axial stops and press fit manufacturing variations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If stationary axial stops are used to limit axial movement of the adjustment ring, then axial movement is reduced, but frictional wear increases due to operational rotation against the stops
Solution Approach 1:
The patent transforms the stationary axial stop into a dynamic component by integrating it with the rotating adjustment ring. The vane lever now includes a protuberance that rotates together with the adjustment ring, eliminating relative motion between the stop and the ring during operation. This dynamic approach maintains axial movement control while eliminating frictional wear caused by stationary stops.
Solution Approach 2:
The patent merges the axial stop function with the vane lever structure by integrating the protuberance directly into the vane lever body. This combination eliminates the need for separate stationary stop components and their associated press-fit manufacturing variations, while ensuring the stop moves in unison with the adjustment ring to prevent wear.
2Device complexity
If integrally manufactured vane levers with protuberances are used, then the number of parts and manufacturing costs are reduced, but manufacturing precision requirements increase
Solution Approach 1:
The patent combines multiple functions (van e lever mechanism and axial stop) into a single integrally manufactured component. This merger reduces the total number of parts and eliminates assembly steps, while the manufacturing precision is managed through modern integral manufacturing processes that can achieve required tolerances in a single production step.
Data Source
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AI summary
A vane lever for a guide apparatus of a turbocharger may include a base. The base may include a bore disposed therethrough. An arm may extend from the base and may be receivable in an aperture of an adjustment ring of the guide apparatus. A protuberance may extend from the base and may be capable of limiting axial movement of the adjustment ring.