Vehicle Exhaust Tail Trim Assembly Gap Design
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Solution Overview
Problem
Exhaust pipes in vehicles with GDI engines discharge black condensed water mixed with soot, contaminating the ground due to their design, leading to environmental pollution.
Innovation Solution
A tail trim assembly for the exhaust pipe featuring a cylindrical main body with a welding part and a collecting part that creates a gap to collect condensed water, preventing leakage and improving the aesthetic appearance by directing the exhaust gases and water at a predetermined angle.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the exhaust pipe is designed to face down to quickly discharge condensed water, then the discharge speed of condensed water is improved, but the ground is contaminated by black condensed water mixed with soot
Solution Approach 1:
The exhaust pipe is divided into multiple sections: a downward-facing front portion for rapid discharge, and an upward-facing rear portion for controlled discharge. This segmentation allows different sections to perform different functions - the front section quickly removes condensed water while the rear section prevents contamination by directing discharge away from the ground.
Solution Approach 2:
Instead of having the entire exhaust pipe face down for quick discharge, the invention inverts the orientation of the rear portion to face upward. This inverted design causes condensed water to be discharged away from the ground, preventing contamination while maintaining efficient drainage capability.
2Speed
If the exhaust pipe faces down to discharge condensed water, then the condensed water is discharged quickly, but the aesthetic appearance of the exhaust pipe is poor
Solution Approach 1:
The exhaust pipe is segmented into front and rear portions with different orientations. The front portion faces down for functional efficiency while the rear portion faces upward for aesthetic improvement, creating a balanced design that satisfies both performance and appearance requirements.
Solution Approach 2:
Different sections of the exhaust pipe are given different local qualities - the front section has a downward orientation optimized for drainage speed, while the rear section has an upward orientation optimized for appearance. This local differentiation allows each part to excel at its specific function.
3Ease of manufacture
If the exhaust pipe is designed with a simple structure for quick discharge, then the manufacturing complexity is reduced, but the ability to prevent contamination is insufficient
Solution Approach 1:
The exhaust pipe is divided into two simple sections with different orientations, connected by a bend. This segmented design maintains manufacturing simplicity while effectively preventing contamination through the upward-facing rear portion.
Solution Approach 2:
The exhaust pipe incorporates a curved bend connecting the downward-facing front portion and the upward-facing rear portion. This curvature allows the transition between orientations while maintaining a simple, manufacturable structure without complex joints or components.
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 tail trim assembly effectively collects and stores condensed water, preventing ground contamination and enhancing the exhaust pipe's appearance, thereby reducing environmental pollution and increasing commercial value.
Implementation Method 1
condensed water that is discharged through the exhaust pipe formed at the end of the muffler of the vehicle
Data Source
AI summary
A tail trim assembly for an exhaust pipe in a vehicle which may be mounted at a rear portion of the exhaust pipe that may be formed at an end of a vehicle muffler and discharges exhaust gas and condensed water from the muffler to the outside, may include a main body fitted around the rear portion of the exhaust pipe, at least a welding part formed at an end of the main body and welded to the exhaust pipe, and a collecting part formed at a rear end of the main body, wherein the rear end of the main body and a rear end of the rear portion in the exhaust pipe may be spaced with a predetermined gap to collect the condensed water discharged from the exhaust pipe therethrough.