Ammonia Decomposition Controller for Engine Hydrogen Supply
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Solution Overview
Problem
The existing ammonia decomposition systems face challenges in adjusting the combustion efficiency of engines due to the automatic determination of hydrogen production based on exhaust gas temperature, making it difficult to optimize fuel combustion.
Innovation Solution
An ammonia decomposition system with a controller that adjusts the decomposition rate of ammonia, using a catalyst and electrodes to apply an electric field, allowing for variable control of the decomposition rate based on temperature, current, and flow rate of ammonia.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the hydrogen production amount is automatically determined according to the exhaust gas temperature in the ammonia decomposition system, then the catalyst can maintain stable operation, but it becomes difficult to appropriately adjust the combustion efficiency of the fuel in the engine
Solution Approach 1:
The patent applies dynamics by making the ammonia decomposition rate adjustable rather than fixed. The controller dynamically changes the decomposition rate based on engine operating conditions, allowing the system to adapt between maintaining catalyst stability and optimizing combustion efficiency at different load conditions.
Solution Approach 2:
The patent changes the parameter of ammonia decomposition rate from an automatic temperature-dependent process to a controllable variable parameter. By independently controlling the decomposition rate through the controller, the system can adjust hydrogen production to match engine fuel injection requirements, resolving the contradiction between catalyst stability and combustion efficiency.
2Productivity
If the decomposition rate of ammonia is increased to improve hydrogen generation, then the fuel combustion efficiency improves, but the combustion control becomes difficult to adjust
Solution Approach 1:
The controller receives feedback from the engine operating conditions and adjusts the ammonia decomposition rate accordingly. This feedback mechanism allows the system to increase hydrogen generation when needed while maintaining ease of control by automatically matching the decomposition rate to engine requirements.
Solution Approach 2:
The system uses the engine's own operating parameters (exhaust gas temperature, load conditions) to automatically regulate the decomposition rate, making the system self-adjusting and easier to operate while maximizing hydrogen generation for optimal combustion efficiency.
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 system enables easy adjustment of hydrogen generation, improving fuel combustion efficiency and allowing for stable engine operation across varying load conditions.
Implementation Method 1
a catalyst that decomposes ammonia
Implementation Method 2
electrodes that apply an electric field to the catalyst
Data Source
AI summary
An ammonia decomposition system includes a decomposition unit and a controller. The decomposition unit decomposes ammonia. The controller controls the decomposition rate of ammonia in the decomposition unit.