EGR Cooler Coolant Outlet Positioning for Flow Optimization
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Solution Overview
Problem
Existing engine block insertion-type EGR coolers face challenges in design adjustments, increased costs due to rigid pipe configurations, limited coolant flow, and deteriorated heat exchange performance, which affects engine power.
Innovation Solution
A vehicle EGR cooler design where the coolant outflow pipe is positioned outside the engine block through a tube plate and gas cover, allowing for adjustable diameter and design changes, optimizing coolant flow and heat exchange performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the coolant outflow pipe is provided inside the engine block, then the EGR cooler can be integrated into the engine block, but the design adjustment becomes difficult and cost increases
Solution Approach 1:
The coolant outflow pipe is extracted from the engine block interior and positioned on the outer surface of the engine block. This allows the pipe to be independently configured and adjusted without being constrained by the engine block's internal structure, thereby improving design adjustability while reducing overall system complexity.
Solution Approach 2:
The EGR cooler is divided into modular components: the cooler body, the tube plate, and the coolant outflow pipe. The pipe is separated as an independent component that can be adjusted separately from the engine block, enabling flexible design changes without affecting the entire integrated structure.
2Productivity
If the coolant inflow pipe and outflow pipe are provided inside the engine block, then integration is achieved, but coolant flow is limited due to restricted shapes
Solution Approach 1:
The coolant outflow pipe is extracted from the constrained internal space of the engine block and positioned on the outer surface. This extraction provides freedom in shaping the pipe to optimize coolant flow paths, increasing flow rate and reducing pressure drop.
Solution Approach 2:
The pipe configuration is made dynamic and adjustable rather than fixed. The separate positioning of the outflow pipe allows for optimized routing that adapts to different flow requirements, improving coolant circulation efficiency.
3Reliability
If the coolant pipes are restricted in shape inside the engine block, then integration is simplified, but heat exchange performance deteriorates due to pressure drop
Solution Approach 1:
The outflow pipe is extracted to a position where it can be configured to minimize pressure drop. This allows for smoother flow paths and reduced restrictions, improving heat exchange performance by maintaining higher coolant pressure and flow velocity through the EGR cooler.
4Adaptability or versatility
If the coolant pipes are provided inside the engine block, then integration is achieved, but design changes require unnecessary cost increase
Solution Approach 1:
The coolant outflow pipe is extracted as a separate, independently configurable component. This allows design changes to be made to the pipe without requiring modifications to the engine block itself, significantly reducing manufacturing costs for design iterations and updates.
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
Facilitates easy design adjustments and cost-effective changes, improves coolant flow and heat exchange performance, enhancing engine power by optimizing the coolant outflow pipe configuration.
Implementation Method 1
a circulation system in which a coolant supplied through the coolant inflow pipe is heat-exchanged with an exhaust gas flowing inside the gas tubes in the interior of the cooler body
Data Source
AI summary
The present invention relates to a vehicle EGR cooler for cooling down recirculation exhaust gas of a vehicle engine and, more particularly, to a vehicle EGR cooler, which is inserted into an engine block, and facilitates diameter adjustment and design change of a coolant outlet since a coolant outlet side is provided on an outer side of the engine block.