Pre-compressed Insulating Panel for Vehicle Powertrain Thermal Bridging
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Solution Overview
Problem
In vehicle powertrain systems, direct abutment of components often creates thermal bridges that compromise the efficiency of thermally insulating panels, as they are designed to reduce heat transfer between components with complex and precise geometries, leading to reduced encapsulation efficiency.
Innovation Solution
A thermally insulating panel with pre-compressed areas that provide rigidity and act as a mounting point between powertrain and vehicle components, featuring uncompressed areas for thermal insulation and apertures for fixings, which decouples thermal transfer while maintaining structural integrity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If direct abutment of components is used to reduce manufacturing complexity, then ease of manufacture is improved, but thermal insulation efficiency deteriorates due to thermal bridges
Solution Approach 1:
The contact surface between components is segmented into a pre-compressed area (first area) and an uncompressed area (second area). This segmentation allows the pre-compressed area to provide rigid mechanical support for direct abutment while the uncompressed area maintains thermal insulation properties, thus resolving the contradiction between ease of manufacture and thermal insulation efficiency.
Solution Approach 2:
Different areas of the contact surface are assigned different material properties: the pre-compressed area has higher density and rigidity for structural support, while the uncompressed area has lower density and better thermal insulation. This local differentiation allows simultaneous achievement of mechanical strength and thermal insulation without compromising either function.
2Loss of energy
If thermally insulating panel is used to reduce heat transfer, then thermal insulation efficiency is improved, but manufacturing precision requirements worsen due to small engineering tolerances for attachment
Solution Approach 1:
The first area of the contact surface is pre-compressed during manufacturing to create a rigid mounting position before the components are assembled. This preliminary action ensures that the rigid area provides sufficient structural support and tolerance compensation, reducing the precision requirements for subsequent attachment operations while maintaining thermal insulation performance.
3Strength
If pre-compressed area is created to provide rigidity, then strength is improved, but thermal insulation performance worsens in the compressed region
Solution Approach 1:
The contact surface is divided into distinct zones with different properties: the pre-compressed first area provides high strength and rigidity for mechanical support, while the uncompressed second area maintains optimal thermal insulation performance. This local quality differentiation ensures that each area performs its primary function without compromising the other.
Solution Approach 2:
The contact surface is segmented into functional zones where the pre-compressed area (first area) and uncompressed area (second area) are spatially separated. This segmentation allows the rigid mounting position to be established in the pre-compressed area while preserving thermal insulation capabilities in the uncompressed area, resolving the trade-off between strength and thermal insulation.
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 solution effectively reduces thermal bridging by creating a thermally insulating layer between powertrain and vehicle components, enhancing the rigidity and thermal insulation at contacting points, thereby maintaining the structural connection without compromising thermal efficiency.
Implementation Method 1
The thermally insulating panel is pre-compressed in an area that forms the contact point or surface between the powertrain component and the vehicle component so that it is more rigid in this area
Implementation Method 2
panel material configured to provide thermal insulation to a powertrain component
Data Source
AI summary
An engine system (200) for a vehicle comprising: a powertrain component (120); a second vehicle component (130); a fixing (140) joining the powertrain component (120) to the second vehicle component (130); a thermally insulating panel (100) comprising at least one uncompressed area (104) extending over at least a portion of the powertrain component (120) to at least partially thermally insulate the powertrain component (120) and comprising at least one pre-compressed area (106) for providing a rigid mounting position to mount the vehicle component (130) to the powertrain component (120), the rigid mounting position to be located at a potential thermal bridge between the powertrain component (120) and the second vehicle component (130) such that it forms a thermal insulating layer between the powertrain component (120) and the second vehicle component (130).