Exhaust Shield with Shearable Fastening for Crash Compliance
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Solution Overview
Problem
Existing exhaust-gas systems face damage and noise issues due to protruding tailpipe trims, which can lead to expensive repairs and noise pollution, and existing noise optimization measures hinder the required pushing of trims onto the tailpipe during crashes.
Innovation Solution
A noise-optimized exhaust-gas tailpipe device with a shield element fastened by a predetermined breaking device, allowing the shield element to be pushed onto the tailpipe during crashes, reducing noise and enhancing crash behavior by utilizing a holding element with shearable connecting bridges for durable fastening and reliable detachment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the exhaust-gas tailpipe trim is arranged in a protruding manner to permit reliable discharge of exhaust gases and influence visual appearance, then the discharge function and aesthetics are improved, but the trim becomes vulnerable to impact damage in crash situations
Solution Approach 1:
The trim is pre-configured with a pushing mechanism that automatically activates during crash situations. The trim includes a pushing member that can be pushed into the tailpipe along the longitudinal direction, which is prepared in advance to engage with the tailpipe upon impact, thereby protecting the exhaust system from damage while maintaining aesthetic appearance during normal operation
Solution Approach 2:
The trim transitions from a static protruding structure to a dynamic system that can change its configuration during crashes. The pushing member is designed to move relative to the trim body upon impact, transforming the trim from a rigid aesthetic component to an active protective mechanism that dynamically responds to crash conditions
2Object-generated harmful factors
If noise optimization measures are implemented in the exhaust-gas system, then noise levels are reduced, but the measures may block the pushing of the trim onto the tailpipe during crashes
Solution Approach 1:
The noise optimization component is segmented into multiple parts including a first component and a second component that can move relative to each other. The second component is displaceable along the longitudinal direction of the tailpipe, creating a segmented structure that reduces noise during normal operation while allowing the components to separate or move during crashes to enable the trim pushing mechanism to function
Solution Approach 2:
A pushing member is introduced as an intermediary element between the trim and the tailpipe. This intermediary component facilitates the transmission of pushing force from the trim to the tailpipe during crashes, while during normal operation it remains positioned to allow noise optimization functions to operate effectively without blocking the crash response path
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
The solution effectively reduces noise levels and prevents costly damage by ensuring the shield element is pushed onto the tailpipe during impacts, maintaining operational noise optimization and crash resilience.
Implementation Method 1
at least one shield element (4) which is designed for noise optimization
Implementation Method 2
The predetermined breaking device is suitable and designed for splitting the holding element into at least two component parts in the crash situation
Data Source
AI summary
A vehicle component (100) having an exhaust-gas tailpipe device (1) for an exhaust-gas system of a motor vehicle includes at least one exhaust-gas tailpipe (2) and an exhaust-gas tailpipe trim (3) that, in a crash situation, can be pushed at least in sections onto the exhaust-gas tailpipe (2). The exhaust-gas tailpipe device (1) has at least one shield element (4) that is designed for noise optimization and that is fastened in front of the exhaust-gas tailpipe trim (3) by means of at least one predetermined breaking device (5). Thus, in the crash situation, the shield element (4) can be pushed at least in sections onto the exhaust-gas tailpipe (2).