Multifunctional Engine Module: Thermoplastic Cooling and Metal EGR Integration
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Solution Overview
Problem
The increasing space constraints under the bonnet of vehicles require a multifunctional module that integrates multiple engine functions while maintaining operational reliability, reducing space occupation, and utilizing cost-effective materials like thermoplastic synthetic materials without compromising on performance.
Innovation Solution
A multifunctional module is designed with separate structural elements for the exhaust-gas recirculation and engine-cooling circuits, where the exhaust-gas recirculation circuit is made of metal and the engine-cooling circuit is made of thermoplastic synthetic material, allowing direct mounting on the engine block and optimizing space usage, with a heat exchanger and gas flow adjustment device to manage coolant and exhaust gas circulation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If multiple engine functions are integrated into a single module to reduce space occupation, then the space efficiency improves, but the device complexity increases
Solution Approach 1:
The patent combines the exhaust-gas recirculation circuit and the engine-cooling circuit into a single integrated module that mounts directly on the engine block. This merging of previously separate systems into one compact unit reduces the overall space required under the bonnet while maintaining all necessary functions through careful integration of heat exchanger, coolant circulation, and exhaust gas recirculation pathways.
Solution Approach 2:
The integrated module serves multiple functions simultaneously: it cools exhaust gases, recirculates them to the engine, manages engine cooling through coolant circulation, and regulates fluid flow through integrated valves and heat exchangers. This multi-functionality allows a single component to replace what would traditionally require multiple separate systems, optimizing space while delivering comprehensive engine management capabilities.
2Ease of manufacture
If thermoplastic synthetic material is used for the engine-cooling circuit to reduce manufacturing costs, then the manufacturing cost decreases, but the temperature resistance capability deteriorates
Solution Approach 1:
The patent applies different material qualities to different parts of the system based on local temperature requirements. The engine-cooling circuit, which operates at lower temperatures, is made from cost-effective thermoplastic synthetic material. The exhaust-gas recirculation circuit, which handles high-temperature exhaust gases, is made from metal with high temperature resistance. This localized material selection optimizes both manufacturing cost and temperature resistance where needed.
Solution Approach 2:
The integrated module employs a composite construction combining thermoplastic synthetic material for the cooling circuit components with metal components for the exhaust-gas recirculation circuit. This composite approach allows each material to be used in the zone where it provides the most benefit - thermoplastic for cost-effective cooling passages and metal for high-temperature exhaust handling - thereby achieving both cost reduction and adequate temperature resistance.
3Device complexity
If the module is mounted directly on the engine block to eliminate support structures, then the device complexity decreases, but the manufacturing precision requirements increase
Solution Approach 1:
The integrated module is designed as a self-contained assembly with the exhaust-gas recirculation circuit and engine-cooling circuit combined into one unit that mounts as a single component to the engine block. This segmentation into a modular unit simplifies the overall installation process and reduces the number of separate support structures needed, while the modular design allows for standardized mounting interfaces that accommodate precision requirements.
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 solution reduces manufacturing costs, optimizes space, and ensures reliable operation by integrating multiple functions into a compact module, allowing for efficient cooling and re-injection of exhaust gases, while using thermoplastic materials to enhance flexibility and reduce weight.
Implementation Method 1
a heat exchanger (2) for cooling the exhaust gases
Implementation Method 2
the engine-cooling circuit part is made of a thermoplastic synthetic material
Data Source
AI summary
This invention relates to a multifunctional module for an internal-combustion engine, forming a structural assembly and incorporating the functions of cooling the exhaust gases, regulating the re-injection of the exhaust gases and regulating, at least in part, the circulation flows in the cooling circuit of the said engine; the structural assembly is made in the form of a structural and operational unit (1), intended to be mounted on the engine block and incorporating at least a part of an exhaust-gas recirculation circuit, a heat exchanger (2) for cooling the said gases and at least a part of the engine-cooling circuit, incorporating at least the water-outlet housing. The exhaust-gas recirculation circuit part and the engine-cooling circuit part are incorporated in separate structural elements.