Custom Sealing Device for Boosted Engine Leak Detection
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Solution Overview
Problem
Current leak detection systems for boosted engines face challenges in delivering higher pressure vapor into the air induction system without pressure loss at the interface, due to the unique designs of air induction hoses and ducts from different manufacturers, which complicates leak detection and verification in high-pressure environments.
Innovation Solution
A sealing device with a customized periphery that matches the specific make and model of air induction system, forming a secure interconnection with the air induction hose or duct, using grooves, detents, lips, or apertures to mimic the original connection between the hose and housing, and secured with clamps, allowing for pressurized leak detection vapor to be introduced without loss.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a standardized EVAP test pressure interface is used, then the device is simple and universally applicable, but pressure loss occurs at the interface when testing boosted engine air induction systems
Solution Approach 1:
The sealing device incorporates manufacturer-specific peripheral features (grooves, detents, lips, or apertures) that are customized to match the specific air induction hose or duct design. This local customization at the interface periphery ensures a secure, leak-free connection tailored to each manufacturer's unique hose geometry while maintaining a simple overall device structure.
2Measurement precision
If higher pressure vapor is delivered into the air induction system, then leak detection accuracy improves, but pressure loss at the interface increases
Solution Approach 1:
The sealing device is pre-configured with the correct peripheral features before use, ensuring that when higher pressure vapor is introduced into the air induction system, the interface is already optimized to prevent pressure loss. This preliminary customization eliminates the need for adjustments during high-pressure testing, maintaining both detection accuracy and pressure retention.
3Reliability
If a secure sealed interface is created for high-pressure vapor delivery, then pressure retention is improved, but the device must be customized for each manufacturer
Solution Approach 1:
The sealing device achieves universal adaptability through localized customization - the peripheral features (grooves, detents, lips, or apertures) are specific to each manufacturer's hose design, while the core sealing mechanism remains consistent. This allows one device design approach to be adapted across multiple manufacturers by modifying only the peripheral interface features.
Data Source
AI summary
An automotive leak detection system that includes means for forming a secure, leak-proof interconnection between a source of pressurized leak detection vapor and the automobile engine's air induction system ducting or hose. The system includes a sealing mechanism that is specially contoured and configured to matingly interconnect about the opening defined about the distal-most end of the air induction system ducting or hose such that the sealing device and hose form a secure, leak-proof interconnection. The sealing device may be provided with a customized periphery that is designed to correspond and matingly engage with the footprint or specific configuration of the distal end of the air induction system ducting or hose of a specific car manufacturer and/or specific make and model air induction system ducting or system.