Sliding Engine Component with Graphene Nano Platelets
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Solution Overview
Problem
Existing sliding engine components with plastic polymer-based overlay layers lack sufficient structural reinforcement and lubrication performance, particularly in resisting tensile fatigue cracks and ensuring effective lubrication during direct contact with moving parts.
Innovation Solution
Incorporating functionalised graphene nano platelets into the plastic polymer-based composite layer, which enhances bonding, structural reinforcement, and lubrication performance by distributing them throughout the matrix, and using a solvent system for deposition to achieve optimal viscosity and uniformity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If traditional plastic polymer-based overlay layers are used, then the bearing surface provides basic lubrication and embedability, but the structural reinforcement and resistance to tensile fatigue cracks are insufficient
Solution Approach 1:
The patent applies composite materials by incorporating functionalised graphene nano platelets into the plastic polymer-based overlay layer. This creates a composite structure where the graphene nano platelets provide exceptional tensile strength and crack resistance, while the polymer matrix maintains lubrication and embedability properties. The composite achieves superior mechanical reinforcement without compromising the bearing surface's functional performance.
2Strength
If functionalised graphene nano platelets are incorporated into the composite layer, then structural reinforcement and fatigue crack resistance are enhanced, but the manufacturing complexity increases
Solution Approach 1:
The patent uses a solvent system as an intermediary to facilitate the incorporation of functionalised graphene nano platelets into the polymer matrix. The solvent enables uniform dispersion of the nano platelets during the deposition process, and subsequent evaporation leaves a homogeneous composite structure. This intermediary approach simplifies manufacturing by avoiding complex mixing or high-energy processing steps.
3Strength
If the overlay layer is made thicker to improve structural reinforcement, then fatigue crack resistance increases, but the embedability of particulates in lubricating oil decreases
Solution Approach 1:
The patent applies local quality by concentrating the structural reinforcement function in the functionalised graphene nano platelets distributed throughout the polymer matrix. This allows the overlay layer to maintain a thin configuration (preserving embedability) while achieving superior fatigue crack resistance through the localized reinforcement provided by the graphene nano platelets at critical stress points.
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 functionalised graphene nano platelets provide enhanced structural reinforcement, improved resistance to fatigue cracks, and increased lubrication performance, reducing material wear and friction, while maintaining embedability of particulates in the lubricating oil.
Implementation Method 1
having distributed throughout the matrix functionalised graphene nano platelets
Implementation Method 2
using a solvent system for deposition to achieve optimal viscosity and uniformity
Implementation Method 3
increased lubrication performance, reducing material wear and friction
Data Source
AI summary
A sliding engine component may include a plastic polymer-based composite layer on a substrate. The composite layer may include a matrix of plastic polymer-based material, and functionalised graphene nano platelets distributed throughout the matrix.