Adjustable Coupling Rod for VTG Turbocharger Actuator Alignment
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Solution Overview
Problem
Existing coupling rod designs for VTG turbochargers lack a simple and cost-effective method for axial length compensation and alignment with the actuator and VTG outside lever, making installation challenging, especially in varying turbocharger configurations.
Innovation Solution
A coupling rod fitting with sleeve-like end pieces that can be pushed onto a rod-like intermediate piece, allowing for adjustable length and fixed assembly through a welded connection, incorporating compensating ball joints for alignment flexibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a fixed-length coupling rod is used, then the structure is simple, but axial length compensation is not possible
Solution Approach 1:
The coupling rod is divided into three separate components: a first end piece, a second end piece, and an intermediate piece. These segments can be assembled in different configurations to achieve the required axial length compensation while maintaining a relatively simple overall structure.
Solution Approach 2:
The end pieces are designed as sleeve-like structures that can be pushed onto the intermediate piece, creating a nested arrangement. This allows for compact storage and easy assembly while providing the necessary adjustment capability.
2Manufacturing precision
If custom parts are designed for different turbocharger configurations, then alignment precision is improved, but manufacturing cost and part variety increase
Solution Approach 1:
The coupling rod fitting is designed as a universal component that can be used across different turbocharger configurations (flap end pieces and control capsule end pieces). The modular design with standardized intermediate pieces and adaptable end pieces allows a single part design to serve multiple alignment and configuration requirements.
Solution Approach 2:
The coupling rod fitting incorporates adjustable elements that allow dynamic adaptation to different installation scenarios. The end pieces can be positioned at different locations on the intermediate piece to achieve proper alignment for various turbocharger types without requiring custom-designed parts for each configuration.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables easy assembly and reliable axial length adjustment, accommodating different turbocharger designs and alignments without affecting system hysteresis, and allows for the use of identical parts across various configurations.
Implementation Method 1
the set final assembly position on the intermediate piece to be fixed, preferably by means of a welded connection
Data Source
AI summary
A coupling rod fitting (1) having a first end piece (2); a second end piece (3); and having an intermediate piece (4) which connects the first end piece (2) and the second end piece (3). The intermediate piece (4) is formed as a connecting rod and the first end piece (2) and the second end piece (3) have in each case one sleeve (5 and 6 respectively), which sleeves are pushed onto the connecting rod (4) and are fixed in an adjustable final assembly position on the connecting rod (4).