Porous Ceramic Composite Particle for Engine Thermal Insulation
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Solution Overview
Problem
Internal combustion engines face inefficiencies due to high thermal energy discharge through their walls, necessitating the development of heat insulation materials with low thermal conductivity and superior heat resistance that can maintain effectiveness under high-temperature and high-pressure conditions.
Innovation Solution
A composite particle comprising internal pores made of ceramic-based materials, specifically a combination of aerogels and ceramic compounds, is developed. This composite particle is designed to maintain a stable shape and internal structure during high-temperature coating processes, forming strong bonds between aerogel and ceramic components to achieve enhanced durability and reduced thermal conductivity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If heat insulating materials are installed to the outside of the internal combustion engine, then thermal energy discharge is reduced and efficiency is improved, but the materials must maintain stability under high-temperature and high-pressure conditions which is difficult to achieve
Solution Approach 1:
The patent uses a composite material consisting of ceramic particles dispersed in a binder resin matrix. The ceramic particles provide heat resistance and low thermal conductivity, while the binder resin provides structural integrity. This composite structure allows the coating to maintain both insulation performance and stability under high-temperature and high-pressure engine conditions.
Solution Approach 2:
The patent employs a porous coating structure with controlled porosity (30-70%) created by using porous ceramic particles as fillers. The porous structure reduces thermal conductivity by introducing air pockets that impede heat transfer, while the ceramic-binder composite matrix maintains structural stability under engine operating conditions.
2Loss of energy
If porous structure is introduced to reduce thermal conductivity, then heat insulation performance is improved, but the structural stability under high temperature may deteriorate
Solution Approach 1:
The composite of ceramic particles and binder resin creates a synergistic effect where the ceramic provides thermal stability and the binder provides structural cohesion. This allows the porous structure to maintain its shape and integrity even at high temperatures while preserving the low thermal conductivity benefits of the porous architecture.
Solution Approach 2:
The patent optimizes the porosity parameter within a specific range (30-70%) to balance heat insulation performance and structural stability. Additionally, the ceramic particle content is controlled (5-50 parts by weight per 100 parts binder resin) to ensure sufficient structural support while maintaining low thermal conductivity.
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 porous ceramic composite particle effectively maintains a stable shape and internal structure, providing superior heat insulation with reduced thermal conductivity and volumetric heat capacity, thus improving the efficiency and fuel efficiency of internal combustion engines by minimizing heat discharge.
Implementation Method 1
forming strong bonds between aerogel and ceramic components
Implementation Method 2
providing superior heat insulation with reduced thermal conductivity
Data Source
AI summary
Disclosed are a composite particle and a method of manufacturing the same. The composite particle may have an appropriate level of particle diameter and may maintain a stable shape and internal porous structure when the composite particle is applied during a coating process at high temperature.