Expansion Plenum for Equal Exhaust Gas Distribution
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Solution Overview
Problem
Existing exhaust gas treatment systems face challenges in achieving equal distribution of exhaust gas flow across multiple legs due to structural constraints, leading to potential unequal distribution and reduced efficiency.
Innovation Solution
An expansion plenum with angled inlets and mating structures is used to control and distribute exhaust gas flow, reducing velocity and ensuring equal distribution across outlets, which are then directed to an exhaust gas treatment system.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If structural requirements limit the space for exhaust gas distribution, then the system fits within available space, but unequal distribution of exhaust gas stream across multiple legs occurs
Solution Approach 1:
An expansion plenum is introduced as an intermediary component between the exhaust source and the treatment system legs. The plenum provides a large expansion space that allows the exhaust gas stream to equalize and distribute evenly across multiple outlets, overcoming spatial constraints while achieving uniform flow distribution to each treatment leg.
Solution Approach 2:
The expansion plenum utilizes three-dimensional space expansion to resolve the distribution problem. By creating a volumetric expansion region rather than relying on two-dimensional flow paths, the system allows exhaust gases to redistribute uniformly in multiple directions, ensuring equal flow to each leg despite limited overall space.
2Speed
If exhaust gas flow velocity is high, then the exhaust gas moves quickly through the system, but unequal distribution and backpressure issues occur
Solution Approach 1:
The expansion plenum acts as a cushioning chamber that slows down the high-velocity exhaust gas stream before it enters the distribution outlets. This preliminary deceleration prevents turbulent, unequal distribution and backpressure issues by allowing the gas to expand and equalize its velocity profile before entering the treatment system legs.
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 solution ensures a controlled and equal distribution of exhaust gas to each outlet, reducing backpressure on the turbocharger and enhancing the efficiency of the exhaust gas treatment system.
Implementation Method 1
the expansion plenum allows for the flow of exhaust gas to expand from the inlet to the plurality of outlets, thereby reducing a velocity of the exhaust gas flow
Implementation Method 2
with the mating structure coupled to one or more of the plurality of outlets, an amount of flow through the outlets can be distributed to provide a determined amount of flow for each outlet
Data Source
AI summary
Various systems are provided for supporting an exhaust gas treatment system vertically above an engine in an engine system. In one example, an engine system includes an engine; a support structure including a base and a plurality of mounting legs, a first end of each mounting leg of the plurality of mounting legs coupled to the base and an opposite, second end of each mounting leg of at least a portion of the plurality of mounting legs coupled to the engine, where at least three mounting legs of the plurality of mounting legs and the base form two triangles within a same plane of the support structure; and an exhaust gas treatment system positioned vertically above and mounted on the engine via the support structure.