Adjustable Camshaft Sprocket Assembly Eccentric Tool
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Solution Overview
Problem
Existing adjustable camshaft sprocket assemblies require removal of the main timing chain cover to adjust the angular position of the sprocket relative to the camshaft, which is cumbersome and costly, and their construction is complex, limiting their performance and manufacturing simplicity.
Innovation Solution
An adjustable camshaft sprocket assembly with a hub and sprocket body secured by fasteners, allowing angular adjustment through a tool-receiving opening and stud-receiving slot, enabling relative angular movement between the hub and sprocket body without removing the main cover, using an eccentric adjustment tool that allows sliding and rotational movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the main timing chain cover is removed to adjust the sprocket angular position, then access to the sprocket assembly is achieved, but the adjustment process becomes cumbersome and costly
Solution Approach 1:
The timing chain cover assembly is divided into a main cover and a separate lid. The lid is selectively removable to provide access to the sprocket assembly for adjustment, while the main cover remains in place. This segmentation allows adjustment operations without requiring removal of the entire main cover, thereby simplifying the adjustment process and reducing complexity.
2Adaptability or versatility
If a complex construction design is used for the adjustable sprocket assembly, then adjustment functionality is achieved, but manufacturing simplicity and overall performance are limited
Solution Approach 1:
The sprocket assembly incorporates a dynamic adjustment mechanism where the sprocket body can be selectively positioned at different angular locations on the hub. The adjustment tool with eccentric stud and elongated opening enables dynamic repositioning of the sprocket relative to the hub by allowing rotational movement and sliding adjustment, providing versatility while maintaining manufacturing simplicity through straightforward mechanical components.
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
Facilitates easy and cost-effective adjustment of the camshaft sprocket assembly's angular position within the timing chain cover assembly, simplifying construction and improving overall performance by allowing adjustments without disassembling the main cover, while maintaining secure fixation and precise control.
Implementation Method 1
either the stud-receiving opening or the tool-receiving opening is elongated to allow relative sliding movement of the associated adjustment tool therein
Data Source
AI summary
An adjustable camshaft sprocket assembly includes a hub and a sprocket body secured to the hub. A stud-receiving opening is defined in one of the hub flange and the sprocket body, and a tool-receiving opening is defined in the other of the hub flange and the sprocket body. The tool-receiving opening is aligned with the stud-receiving opening and is adapted to receive a body portion of an adjustment tool, and the stud-receiving opening is adapted to receive an eccentric stud of the adjustment tool. Either the stud-receiving opening or the tool-receiving opening is elongated. Rotation of the adjustment tool when its body is located in the tool-receiving opening and its eccentric stud is located in the stud-receiving opening causes relative angular movement between the hub and the sprocket body. One or more fasteners are used to immovably secure the sprocket body to the hub after adjustment. A tool includes cylindrical base, a driving head, and an eccentric stud. The stud comprises a spring pin press-fit into a bore.