Wave Rotor Combustor Residual Gas Extraction
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing combustion systems in engines, such as wave rotor combustors, face challenges in maintaining a consistent fuel/oxidant ratio due to mixing with residual gases, which can affect ignition and combustion efficiency.
Innovation Solution
The implementation of a combustion system with a wave rotor design that includes a cavity and conduit structures to enhance the fuel/oxidant ratio by promoting fluid exchange and turbulence, and a fuel injection port to adjust the mixture before ignition, ensuring optimal combustion conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of moving object
If wave rotor combustor operates with residual gases in combustion channels, then continuous operation is maintained, but fuel/oxidant ratio consistency deteriorates
Solution Approach 1:
The patent extracts residual gases from the combustion channel through a dedicated extraction port positioned between the inlet and outlet. This port allows selective removal of residual gases that would otherwise contaminate the fresh fuel/oxidant mixture, thereby maintaining consistent fuel/oxidant ratio while enabling continuous operation. The extraction mechanism separates the harmful residual gases from the combustion process without interrupting the continuous flow of fresh mixture.
Solution Approach 2:
The patent introduces an intermediary extraction port that acts as a mediator between the inlet and outlet of the combustion channel. This intermediate structure allows controlled interaction with residual gases, enabling their removal while preserving the integrity of the fresh fuel/oxidant mixture. The intermediary port serves as a buffer zone that prevents direct mixing of residual gases with the combustion mixture, maintaining composition stability.
2Stability of the object's composition
If fuel injection is increased to compensate for residual gas mixing, then fuel/oxidant ratio is improved, but combustion efficiency deteriorates due to improper mixture
Solution Approach 1:
Rather than adding more fuel to compensate for residual gas mixing (which would create improper mixture), the patent extracts residual gases before they contaminate the fresh fuel/oxidant mixture. This extraction approach maintains the correct stoichiometric ratio without requiring additional fuel injection, thereby preserving combustion efficiency while achieving consistent fuel/oxidant ratio.
Solution Approach 2:
The patent performs preliminary extraction of residual gases from the combustion channel before the fresh fuel/oxidant mixture enters. This preliminary action prevents contamination of the mixture, ensuring that the correct fuel/oxidant ratio is maintained from the outset. By addressing the residual gas issue in advance, the system avoids the need for corrective fuel injection that would compromise combustion efficiency.
3Temperature
If combustion channels are cooled to manage thermal loads, then temperature is reduced, but combustion efficiency deteriorates due to reduced reaction rates
Solution Approach 1:
The patent extracts residual gases that contain unburned fuel and heat energy from the combustion channel. By removing these residual gases, the system recovers thermal energy that would otherwise be wasted, thereby maintaining combustion efficiency even when combustion temperature is managed or reduced. The extraction process prevents heat loss through incomplete combustion of residual gases.
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 design improves the fuel/oxidant ratio in combustion channels, leading to enhanced ignition and combustion efficiency, reducing the adverse effects of residual gases and maintaining consistent performance across varying operating conditions.
Implementation Method 1
enhancing the fuel/oxidant ratio by promoting fluid exchange and turbulence
Implementation Method 2
wave rotor combustors utilizing either detonative or deflagrative combustion
Implementation Method 3
wave rotor combustors utilizing either detonative or deflagrative combustion
Implementation Method 4
combustion of fuel
Data Source
Figure 1~2B
Figure 3A~3B
AI summary
One embodiment of the present invention is a unique engine Another embodiment of the present invention is a unique combustion system, Other embodiments include apparatuses, systems, devices, hardware, methods, and combinations for engines and combustion systems. Further embodiments, forms, features, aspects, benefits, and advantages of the present application will become apparent from the description and figures provided herewith.