Resin Composition for Coating Engine Piston
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Solution Overview
Problem
Current engine piston coatings fail to effectively reduce friction and noise between the piston skirt and cylinder wall, leading to power loss, vibration, and reduced fuel efficiency.
Innovation Solution
A resin composition incorporating carbon nanotubes (CNTs) as reinforcement, with a specific weight ratio and aspect ratio, combined with graphene, binders, solvents, and solid lubricants, to control the coefficient of friction and viscosity of the coated layer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If carbon nanotubes are added to reduce friction, then the coefficient of friction decreases, but the viscosity of the resin composition increases
Solution Approach 1:
The patent applies parameter changes by optimizing the weight ratio of CNTs to resin composition and controlling the average aspect ratio of CNTs. By adjusting these parameters, the patent achieves a balance where the coefficient of friction is reduced while the viscosity remains within manageable limits for the coating process.
Solution Approach 2:
The patent uses composite materials by combining carbon nanotubes with resin composition to create a coated layer with improved friction properties. The composite structure allows the CNTs to provide low-friction characteristics while the resin matrix maintains appropriate rheological properties for coating application.
2Object-affected harmful factors
If carbon nanotubes with high aspect ratio are used to improve friction reduction, then the coefficient of friction decreases, but the coating process stability deteriorates
Solution Approach 1:
The patent applies parameter changes by establishing specific ranges for the product of weight ratio and average aspect ratio of CNTs. This parameter optimization ensures that high aspect ratio CNTs provide effective friction reduction while maintaining coating process stability through controlled distribution and concentration.
3Strength
If more carbon nanotubes are added to reduce wear, then wear resistance improves, but the viscosity of the resin composition increases
Solution Approach 1:
The patent uses composite materials by incorporating CNTs into the resin composition to enhance wear resistance. The composite structure provides improved tribological properties while the resin matrix ensures the mixture remains processable at appropriate viscosity levels.
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 composition significantly reduces friction and wear, stabilizes the coating process, and enhances fuel efficiency and noise reduction by optimizing the coefficient of friction and viscosity within specific parameter ranges.
Implementation Method 1
A resin composition for coating an engine piston and a method of fabricating the same, by which a coefficient of friction of a coated layer provided on the engine piston may be improved
Implementation Method 2
a resin composition for coating an engine piston, the resin composition comprising carbon nanotubes (CNTs) as a reinforcement
Data Source
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AI summary
Provided are a resin composition for coating an engine piston and a method of fabricating the same. The resin composition contains carbon nanotubes (CNTs) as a reinforcement and is capable of providing a coated layer on at least a part of the engine piston, and the method includes adjusting a parameter expressed as a product of a weight ratio of CNTs in the resin composition and an average aspect ratio of CNTs, to control a coefficient of friction of the coated layer and viscosity of the resin composition.