Compact EGR Device Integrating Heat Exchanger and Valve
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Solution Overview
Problem
EGR systems face space constraints due to the dispersion of components and the need for numerous conduits, which leads to increased space requirements and pressure losses, especially with the large-diameter PF/DPF filters used for high flow rates under stricter environmental regulations.
Innovation Solution
A compact device integrates multiple EGR system components into a single body, utilizing the large diameter of the PF/DPF filter to combine functions without additional conduits, featuring a coupling base, exhaust conduit, heat exchanger, and valve to manage exhaust gases efficiently, with the heat exchanger and conduit arranged transversely to minimize space usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If multiple EGR system components are dispersed and connected by conduits, then each component can be independently housed, but the space requirement increases and pressure losses occur
Solution Approach 1:
The patent combines multiple EGR system components (heat exchanger, EGR valve, control unit, and filter) into a single integrated housing structure. This merging eliminates the need for separate conduits to connect dispersed components, thereby reducing the total space occupation while maintaining independent functionality of each component within the unified structure.
Solution Approach 2:
The single housing structure serves multiple functions simultaneously: it houses the heat exchanger, EGR valve, control unit, and filter, while also providing fluidic communication pathways between all components. This multi-functionality approach consolidates what would traditionally require separate housings and connection conduits into one universal structure.
2Ease of manufacture
If multiple EGR system components are dispersed and connected by conduits, then each component can be independently housed, but the number of conduits increases
Solution Approach 1:
The patent integrates all fluidic pathways and connection channels directly into the housing structure itself, eliminating the need for separate external conduits. The housing incorporates internal passages that provide fluidic communication between the heat exchanger, EGR valve, control unit, and filter, thereby simplifying the overall device complexity.
3Area of stationary object
If components are arranged to fit available spaces, then space utilization improves, but component dispersion increases
Solution Approach 1:
The patent arranges components within the housing structure in a compact three-dimensional configuration, utilizing vertical and lateral spaces efficiently. The heat exchanger, EGR valve, control unit, and filter are positioned in close proximity with integrated fluidic pathways, achieving high space utilization without dispersing components across distant locations.
4Reliability
If conduits are used to connect dispersed components, then fluidic communication is established, but pressure losses occur along conduit paths
Solution Approach 1:
The patent incorporates short internal fluidic passages directly into the housing structure, eliminating long external conduits. The integrated pathways provide direct fluidic communication between components with minimal flow path length, thereby maintaining reliable fluidic communication while minimizing pressure losses along the flow paths.
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 configuration reduces space requirements, eliminates the need for intermediate conduits, and optimizes exhaust gas management by providing alternative paths for gases, allowing for efficient cooling and recirculation while minimizing space occupation and pressure losses.
Implementation Method 1
a heat exchanger comprising at least a first coolant fluid connection and a second coolant fluid connection both for the circulation of the coolant liquid
Implementation Method 2
the exchanger extends along a longitudinal direction Z-Z′ between an inlet for the gas to be cooled and an outlet for the cooled gas
Data Source
AI summary
The present invention is a compact device for exhaust gas management in an EGR (Exhaust Gas Recirculation) system configured for occupying a smaller space with respect to the space commonly occupied by a set of elements present in an EGR system, which device is suitable for being coupled to a PF or DPF filter (PF is the abbreviation for particulate filter and DPF is the abbreviation for diesel particulate filter), whichever is appropriate.