Gas Engine Catalyst Converter Vertical Layout
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Solution Overview
Problem
Existing gas engine systems face inefficiencies in oxidizing uncombusted fuel gas in exhaust gases, particularly when catalysts are not optimally integrated into the exhaust gas passage between the gas engine and turbocharger, leading to increased system length and ineffective fuel gas oxidation.
Innovation Solution
A gas engine system configuration where a catalyst converter, incorporating a catalyst to oxidize uncombusted fuel gas, is strategically positioned in the exhaust gas passage between the gas engine and turbocharger, with the turbocharger adjacent to the gas engine, utilizing space above a power generator and incorporating relay pipes and bypass valves for catalyst replacement and temperature management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If a catalyst converter is interposed in the exhaust gas passage between the gas engine and turbocharger, then uncombusted fuel gas oxidation efficiency is improved, but the overall system length becomes significantly greater
Solution Approach 1:
The catalyst converter is repositioned from a linear arrangement in the exhaust gas passage to a vertical arrangement above the power generator. This spatial reconfiguration utilizes the vertical dimension to accommodate the catalyst converter without extending the horizontal system footprint, thereby maintaining compactness while preserving oxidation functionality.
Solution Approach 2:
The catalyst converter is positioned within the vertical space above the power generator, effectively nesting it within the existing system envelope. This allows the catalyst converter to be integrated into the available space without requiring additional horizontal clearance, thus avoiding significant system length increase.
2Length of moving object
If the turbocharger is disposed adjacently to the gas engine, then system compactness is improved, but the catalyst converter cannot be interposed in the exhaust gas passage
Solution Approach 1:
By moving the catalyst converter to the vertical space above the power generator, the invention enables the catalyst to be positioned in the exhaust flow path even when the turbocharger is adjacently disposed to the gas engine. This vertical placement circumvents the spatial conflict between adjacent turbocharger-catalyst linear arrangement and engine-turbocharger adjacent arrangement.
3Length of moving object
If the catalyst converter is positioned to utilize space above the power generator, then system layout compactness is improved, but access for catalyst replacement becomes difficult
Solution Approach 1:
The exhaust gas passage is segmented into multiple sections using relay pipes, with the catalyst converter positioned in one segment. This segmentation allows the catalyst converter to be isolated and accessed independently for maintenance, facilitating catalyst replacement even when positioned above the power generator by enabling discrete access points and modular replacement procedures.
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 efficient oxidation of uncombusted fuel gas while maintaining a compact system layout, enabling effective fuel gas reduction and allowing for operational catalyst replacement, thereby enhancing the overall efficiency and longevity of the catalyst.
Implementation Method 1
a catalyst converter (6) that incorporates therein a catalyst that oxidizes uncombusted fuel gas in exhaust gas discharged from the gas engine (2)
Data Source
Figure 1
Figure 2A~2B
Figure 3
AI summary
A gas engine system includes: a gas engine; an exhaust pipe extending over a plurality of cylinders of the gas engine in a bridging manner; a turbocharger disposed at a position that is away in an axial direction of a crank shaft of the gas engine from one end portion of the exhaust pipe; a catalyst converter that incorporates therein a catalyst that oxidizes uncombusted fuel gas in exhaust gas discharged from the gas engine; and a power generator disposed opposite to the turbocharger, with the gas engine being positioned between the power generator and the turbocharger. The catalyst converter is interposed in a passage extending from an exhaust gas outlet of the exhaust pipe to an exhaust gas inlet of the turbocharger, and is disposed above the power generator.