Hydrogen Generator Ammonia Cracking Engine Cooling
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Solution Overview
Problem
Existing inner combustion engines face inefficiencies and material compatibility issues when using hydrogen as fuel due to high combustion temperatures and associated heat loss, which is exacerbated in rotary engines, leading to reduced thermodynamic yield and potential engine damage.
Innovation Solution
A hydrogen generator system that separates hydrogen from ammonia using a cracking oven with a catalyst and centrifuge, and injects atomized water into the engine cylinder to control combustion temperature and maximize work output, eliminating the need for dedicated cooling systems and reducing engine size and weight.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-generated harmful factors
If hydrogen is used as fuel in inner combustion engines, then clean energy consumption is achieved, but high combustion temperatures cause material compatibility issues and heat loss
Solution Approach 1:
The patent introduces a water injection system as an intermediary substance. Water is injected into the combustion chamber where it absorbs excess heat from hydrogen combustion, converting to steam and thereby moderating the combustion temperature to protect engine materials while maintaining clean energy benefits
Solution Approach 2:
The patent changes the temperature parameter of the combustion process by injecting water that absorbs heat and converts to steam. This parameter change moderates the combustion temperature from excessively high levels to acceptable ranges for engine materials, resolving the contradiction between clean hydrogen combustion and material compatibility
2Productivity
If water is injected to control combustion temperature, then thermodynamic yield is improved, but device complexity increases
Solution Approach 1:
The patent employs a self-service mechanism where water injected into the combustion chamber automatically absorbs excess heat and converts to steam, which then expands to drive the piston. This self-regulating process improves thermodynamic yield without requiring complex external cooling systems, as the water-steam cycle itself provides the temperature control and work output
Solution Approach 2:
The patent utilizes the phase transition of water from liquid to steam during combustion. This phase change absorbs excessive heat energy and the resulting steam expansion provides additional work output, thereby improving thermodynamic yield while the simplicity of using water's natural phase transition avoids complex cooling system requirements
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 approach allows for efficient use of hydrogen fuel without pollution or explosion risks, enhancing thermodynamic yield and engine performance by moderating combustion temperatures and reducing heat loss, making it suitable for various applications including vehicles.
Implementation Method 1
a cracking oven a containing a catalyst b
Implementation Method 2
cracking oven a containing a catalyst b and an electric resistance c
Implementation Method 3
A H2/N2 separating centrifuge d is built-in in the oven a
Implementation Method 4
The ceramics filter e is 'transparent' to the hydrogen molecules and 'opaque' to the nitrogen molecules
Implementation Method 5
injects atomized water into the engine cylinder to control combustion temperature
Implementation Method 6
transform into the vapor or steam amount produced by the combustion
Data Source
Figure 1
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Figure 4
AI summary
A hydrogen generator for use with an inner combustion engine or other apparatus, even of a movable type, such as a home gas kitchen, said hydrogen generator comprises a system for separating hydrogen from ammonia, said system comprising a NH3 tank, an ammonia sucking pump, and a cracking oven containing a catalyst, an electric resistance and a H2/N2 separating centrifuge and including a suction device comprising a filter followed by a bottle for providing a feeding volume necessary for the produced hydrogen to compensate for user system requirement variations.