Exhaust Pipe Bend Radius Expansion for Catalytic Converter Flow
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Solution Overview
Problem
The existing catalytic converter systems in vehicles experience reduced engine performance due to constrictions caused by bends in the exhaust and extension pipes, which limit the mass flow of exhaust gases.
Innovation Solution
A process that involves characterizing the inlet and outlet points, and end planes of bends in the catalytic converter system, determining the centerline with bend angles, and increasing the cumulative centerline bend angle by enlarging the bend radius of the pipes, while maintaining the catalytic converter in the same spatial position.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If bends are placed in the exhaust pipe and/or extension pipe to connect the catalytic converter, then the catalytic converter can be positioned within the vehicle, but the mass flow of exhaust gases is reduced
Solution Approach 1:
The patent applies curvature by increasing the bend radius of pipes in the exhaust system. Instead of using sharp bends to route pipes around the catalytic converter, the invention uses gradual, curved bends with larger radii. This reduces flow separation and turbulence, allowing the pipes to navigate around the catalytic converter while maintaining smoother exhaust gas flow and reducing constraints on mass flow.
2Productivity
If the bend radius of pipes is increased to reduce flow constriction, then the mass flow of exhaust gases improves, but the spatial arrangement of the catalytic converter system becomes more complex
Solution Approach 1:
The patent utilizes three-dimensional spatial arrangement to accommodate increased bend radii. By optimizing the spatial configuration of pipes and the catalytic converter in multiple dimensions, the system can incorporate gradual bends without increasing overall system footprint. The pipes are routed through available three-dimensional space around the catalytic converter, allowing larger bend radii while maintaining compact vehicle integration.
Data Source
AI summary
Described herein is a process for increasing mass flow of an exhaust gas through a catalytic converter system for a vehicle. The process may comprise determining a centerline and corresponding cumulative centerline bend angle of a first catalytic converter system spanning from an inlet point at a first end of the catalytic converter systems exhaust pipe to an outlet point at a second end of the catalytic converter systems extension pipe. Once determined, the cumulative centerline bend angle may be increased by increasing an individual bend radius of at least one bend within the exhaust pipe and/or within the extension pipe.