Bladder-Applicator Repair of Engine Block Wear Voids
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Solution Overview
Problem
Existing methods for repairing internal surface damage in complex geometries, such as engine block components, are inefficient and costly due to the need for skilled labor and expensive materials, and often result in further damage when the component is reassembled, especially in difficult-to-reach areas.
Innovation Solution
A method and apparatus using a heat-cured ceramic material applied with a bladder that expands to exert pressure and heat, filling wear-induced voids in internal surfaces, allowing for effective repair of complex geometries without requiring extensive skilled labor or expensive materials.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional metal replacement techniques (spray-on metals, welding) are used to repair internal surface damage, then the repair can be performed on damaged components, but the cost increases substantially and skilled labor is required
Solution Approach 1:
The patent employs disposable applicator systems and inexpensive repair materials (such as aluminum phosphate-based compositions) that can be easily applied and cured without requiring expensive skilled labor. The applicator is a simple device that can be used once and discarded, eliminating the need for costly specialized equipment and expert technicians while achieving effective repair results.
Solution Approach 2:
The patent replaces traditional mechanical repair methods (spray-on metals requiring skilled application, welding requiring expert technique) with a chemically-cured repair material system. The repair material is applied as a paste or slurry and cured through chemical reaction or heat, eliminating the need for skilled manual manipulation and expensive equipment associated with metallic repair techniques.
2Reliability
If spray-on and welded metals are used for repair, then the component can be restored, but the repaired areas are subject to additional cavitation and damage
Solution Approach 1:
The patent utilizes composite repair materials, specifically aluminum phosphate-based compositions that combine the benefits of metal-like strength with cavitation resistance. These composite materials are designed to withstand the harsh operating environment of engine cooling systems without suffering from the cavitation damage that plagues traditional metal repairs, providing long-term durability and protection against future damage.
3Reliability
If components with internal cavity damage are repaired using conventional methods, then the damage can be addressed, but the complex geometry and difficult-to-reach areas make repair ineffective
Solution Approach 1:
The patent employs a flexible bladder or membrane applicator that can be inserted into complex internal cavities and conform to irregular surfaces. This flexible applicator can reach difficult-to-access areas within engine blocks and other components with complex geometries, allowing the repair material to be applied evenly to internal surfaces that would be inaccessible to traditional spray or brush application methods.
Solution Approach 2:
The patent transitions from surface-level repair approaches to a three-dimensional filling approach using the flexible applicator. The applicator can be inflated or expanded within the cavity to push repair material into voids and irregularities, effectively repairing damage in multiple dimensions rather than just on accessible surfaces. This allows effective repair of internal cavities and complex geometries that cannot be reached by conventional two-dimensional application methods.
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
The method enables cost-effective and durable repair of internal surface damage in complex geometries, reducing the likelihood of future damage and allowing for the reuse of components that would otherwise be discarded, thereby saving resources and labor costs.
Implementation Method 1
providing a volume of material to a bladder configured to retain the volume of material and expand in one or more directions, wherein at least a portion of the bladder is further configured to apply at least one of pressure and heat to the heat-cured ceramic material
Implementation Method 2
applying at least one of pressure and heat, via the bladder, to the heat-cured ceramic material
Data Source
AI summary
A method for repairing a wear-induced void associated with a surface of a component including applying a heat-cured ceramic material to the wear-induced void, wherein the heat-cured ceramic material is configured to substantially fill the wear-induced void and providing a volume of material to a bladder configured to retain the volume of material and expand in one or more directions, wherein at least a portion of the bladder is further configured to apply at least one of pressure and heat to the heat-cured ceramic material. The method further includes applying at least one of pressure and heat, via the bladder, to the heat-cured ceramic material.