Motorcycle Exhaust Purifying Apparatus with Frame-Nested Catalyst
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Solution Overview
Problem
Existing exhaust gas purifying systems for motorcycles face challenges in achieving adequate pollutant capture and oxidation while maintaining the vehicle's design, aerodynamics, and overall performance, as they struggle to balance catalyst activation temperature, catalyst placement, and air flow optimization.
Innovation Solution
The system features a specially designed exhaust gas pipe with strategically located catalysts and an air introduction mechanism, where one catalyst is placed in the front area of the engine and additional air is introduced via a reed valve connected to the induction system, optimizing the chemical reaction and reducing the overall width and increasing aerodynamics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If the catalyst is placed farther from the exhaust gas port to improve activation temperature, then the activation temperature is reached more quickly, but the distance increases and the overall width of the motorcycle increases
Solution Approach 1:
The exhaust gas pipe is positioned to pass through the frame of the motorcycle, nesting the pipe within the existing structural space. This allows the catalyst to be placed at an optimal distance from the exhaust gas port for rapid activation without increasing the overall width of the motorcycle, as the pipe utilizes the internal volume of the frame structure.
2Reliability
If two catalysts are used to improve pollutant capture, then the purification performance is enhanced, but the complexity of positioning and disposition increases
Solution Approach 1:
Two catalysts with different functions (reduction and oxidation) are integrated into a single exhaust gas pipe structure. The pipe is positioned to pass through the frame, allowing both catalysts to be accommodated in a compact arrangement that simplifies the overall positioning and disposition while maintaining enhanced pollutant capture performance.
3Temperature
If the exhaust gas pipe is positioned to optimize catalyst placement, then the activation temperature is improved, but the aerodynamics and overall design are negatively affected
Solution Approach 1:
The exhaust gas pipe is nested within the frame structure of the motorcycle, passing through the frame in a manner that optimizes catalyst placement for rapid activation. This nesting approach allows the pipe to be positioned efficiently without protruding or disrupting the external aerodynamics and overall design of the motorcycle.
4Reliability
If the catalyst length is increased to improve purification, then the pollutant capture is enhanced, but the space required for catalyst placement increases
Solution Approach 1:
The exhaust gas pipe with integrated catalysts is positioned to pass through the frame of the motorcycle, utilizing the internal volume of the frame structure. This nesting allows longer catalysts to be accommodated for enhanced purification efficiency without increasing the external dimensions or requiring additional placement space.
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 configuration allows for quick catalyst activation, improved pollutant reduction and oxidation, and enhanced aerodynamics without compromising the motorcycle's design or increasing its dimensions, resulting in improved performance and reduced maintenance costs.
Implementation Method 1
The function of the catalyst received inside the exhaust gas pipe is that of collecting and trapping the pollutant components of the exhaust gasses
Implementation Method 2
The second catalyst is used as an oxidation catalyst, CO and HC in the exhaust gasses are oxidized
Implementation Method 3
the first catalyst is a reduction catalyst. NOx in the exhaust gasses is reduced
Implementation Method 4
additional air is introduced via a reed valve connected to the induction system, optimizing the chemical reaction
Implementation Method 5
This activation temperature is reached due to the hot exhaust gases passing across the catalyst
Data Source
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AI summary
According to the present invention, an exhaust gas purifying apparatus for a motor vehicle, in particular, a motor cycle is provided, with said exhaust gas purifying apparatus comprising a main pipe extending from the cylinder of said motor cycle toward the rear of said motor cycles and comprising a first intermediate portion receiving a first catalyst, with said first intermediate portion being at least partially disposed in a front area of the engine and/or cylinder of said motor cycle. Moreover, an air supply pipe is provided, with said air supply pipe being adapted to supply air from an induction system of said motor cycle into said main pipe so as to improve the combustion of the exhaust gasses.