Heat Transfer Jackets With Localized Passage Geometries
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Solution Overview
Problem
Conventional heat transfer jackets in internal combustion engines face inefficiencies due to uniform cooling methods that do not account for varying heat transfer needs across different regions, leading to suboptimal temperature control and increased pumping power.
Innovation Solution
The design and manufacturing of heat transfer jackets with localized passage geometries, such as impinging jet, curved flow, column, dimpled, organic, and turbulator passages, are implemented to enhance heat transfer only where needed, using computer simulations and additive manufacturing to optimize coolant flow and minimize unnecessary coolant supply.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If high flow rates and locally high velocity are used in critical regions, then heat transfer effectiveness is improved, but pumping power requirements increase
Solution Approach 1:
The patent applies different passage geometries to different regions of the heat transfer jacket based on local heat generation characteristics. Critical regions with high heat generation use impinging jet passages for maximum heat transfer, while lower heat generation regions use simpler column or organic passages. This localized approach optimizes heat transfer effectiveness where needed without unnecessarily increasing pumping power throughout the entire system.
Solution Approach 2:
The heat transfer jacket is divided into multiple regions with distinct passage geometries (impinging jet, column, organic, turbulator) corresponding to different heat generation zones. This segmentation allows each region to be optimized independently for its specific thermal management needs, avoiding the uniform high-flow approach that would increase overall pumping power requirements.
2Ease of manufacture
If uniform cooling methods are used across all regions, then manufacturing simplicity is maintained, but temperature control precision deteriorates
Solution Approach 1:
The patent implements region-specific passage geometries that match the local heat generation characteristics of different cylinder head regions. High-heat regions receive impinging jet passages while lower-heat regions receive column or organic passages, enabling precise temperature control in each zone without requiring complex manufacturing processes for the entire system.
Solution Approach 2:
The patent varies key geometric parameters (passage shape, size, orientation) across different regions of the heat transfer jacket to optimize heat transfer performance locally. These parameter changes are implemented through additive manufacturing capabilities, allowing precise control of passage geometries without significantly complicating the overall manufacturing process.
3Temperature
If high flow rates are maintained throughout, then heat transfer effectiveness is improved, but flow restriction increases
Solution Approach 1:
The patent provides high flow rates through impinging jet passages only in critical regions where maximum heat transfer is required, while maintaining lower flow rates in regions with less heat generation. This localized high-flow approach improves heat transfer effectiveness where needed without unnecessarily increasing overall flow restriction and coolant consumption.
Solution Approach 2:
The patent applies high flow rates selectively only to the extent necessary for effective heat transfer in critical regions, rather than maintaining high flow rates throughout the entire cooling system. This partial action approach optimizes heat transfer effectiveness while minimizing excessive flow restriction and coolant consumption in lower-heat regions.
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
This approach improves temperature control within the engine cylinder head by maximizing heat transfer where required, reducing overall flow restriction and pumping power while allowing for tailored cooling levels across different regions.
Implementation Method 1
The cooling jacket and radiator provide heat transfer from the engine
Implementation Method 2
The liquid provides a heat transfer for the purposes of preventing overheating of the equipment
Data Source
AI summary
Heat transfer jackets with various passage configurations for cooling or heating equipment. For the equipment of interest, one or more regions of maximum heat transfer are identified. For these regions, the cooling jacket is configured with at least one of the following heat transfer passage geometries: impinging jets, curved blades, columns, dimpled interface, organic, or turbulator. The passage geometries are then manufactured using additive manufacturing.