Acoustic Insulation Cover With Controllable Inlet Flaps
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Solution Overview
Problem
Existing acoustic insulation systems for internal combustion engines lack the ability to properly control the path of outside air flow within the insulation cover, failing to adapt to varying operating conditions and specific needs of engine parts.
Innovation Solution
An acoustic insulation system with a control device that manages multiple inlets and outlets, including inlet and outlet flaps, to dynamically adjust airflow based on engine conditions such as temperature and speed, ensuring optimal heat management and noise reduction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a single inlet and outlet with uniform airflow path are used in the acoustic insulation cover, then the structure is simple, but the ability to control airflow path according to individual operating conditions and engine part needs is insufficient
Solution Approach 1:
The single inlet and outlet are segmented into multiple inlets (first inlet, second inlet) and multiple outlets (first outlet, second outlet), each equipped with independent flaps. This segmentation enables selective opening and closing of different airflow paths based on operating conditions, thereby improving airflow path control adaptability while maintaining reasonable structural complexity
Solution Approach 2:
The inlet flaps and outlet flaps are designed as dynamic components that can independently open and close to adjust airflow paths. The control device dynamically controls the opening/closing state of each flap based on real-time operating conditions (engine temperature, vehicle speed, acceleration state), enabling the system to adapt to varying demands of different engine parts
2Object-affected harmful factors
If the acoustic insulation cover completely covers the engine for noise reduction, then noise insulation performance is improved, but heat dissipation capability deteriorates due to restricted airflow
Solution Approach 1:
Different regions of the acoustic insulation cover are assigned different functions: the cover body provides noise insulation, while strategically positioned inlets and outlets with controllable flaps provide localized heat dissipation pathways. The control system selectively opens specific inlet/outlet combinations based on which engine parts need cooling, achieving both noise reduction and targeted heat management
Solution Approach 2:
The system converts the potential harm of trapped heat (caused by complete engine coverage for noise reduction) into a beneficial feature by implementing controllable airflow paths. The flaps can be opened to allow cooling airflow when engine parts overheat, and closed when noise insulation is the priority, thus transforming the coverage structure from a heat-trapping element into an adaptive thermal management system
3Adaptability or versatility
If multiple independent inlet and outlet flaps are used to control airflow paths, then heat management and noise reduction are optimized, but the control system complexity increases
Solution Approach 1:
The control device serves multiple functions: it monitors operating conditions (engine temperature, vehicle speed, acceleration), determines the thermal management needs of different engine parts, and controls the opening/closing of multiple inlet and outlet flaps. This multi-functional control device manages the complexity of coordinating multiple flaps while providing adaptive airflow path control for optimized heat management and noise reduction
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 system provides enhanced control over airflow paths, improving heat management and noise reduction by adapting to individual engine part needs, reducing the risk of hot spots and the need for additional cooling systems.
Implementation Method 1
a plurality of inlet flaps configured to respectively open and close the plurality of inlets
Implementation Method 2
an acoustic insulation cover configured to cover the internal combustion engine
Implementation Method 3
introducing outside air into an interior of the acoustic insulation cover
Data Source
AI summary
An acoustic insulation system for an internal combustion engine mounted on a vehicle includes: an acoustic insulation cover configured to cover the internal combustion engine with a gap interposed between the acoustic insulation cover and the internal combustion engine. The acoustic insulation cover includes a cover front portion that faces forward of the vehicle. The cover front portion includes: a plurality of inlets for introducing the outside air into the interior of the acoustic insulation cover; and a plurality of inlet flaps configured to respectively open and close the plurality of inlets. The acoustic insulation system further includes a control device configured to control the opening and closing of the plurality of inlet flaps.