Solid-Fuel Engine Combustion Chamber With Air Bypass Control
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Solution Overview
Problem
Conventional internal combustion engines struggle to efficiently utilize solid fuels due to bulkiness, complexity, and the need for converting solid fuels to liquid or gaseous forms, while also producing undesirable emissions.
Innovation Solution
A new internal combustion engine design with a separate combustion chamber for solid fuel combustion, featuring a six-step cycle that includes intake, compression, transfer to the combustion chamber, power, and exhaust, utilizing hydraulic valves and a high-pressure combustion chamber to manage combustion and output power.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If conventional internal combustion engines are used with solid fuels, then power generation is achieved, but the engines become bulky and complex
Solution Approach 1:
The engine is divided into two distinct chambers: a compression chamber for air compression and a combustion chamber for fuel combustion. This segmentation allows each chamber to be optimized for its specific function, reducing overall complexity while maintaining power generation capability.
Solution Approach 2:
The combustion process is extracted from the traditional single-chamber design and separated into a dedicated combustion chamber. This extraction enables independent optimization of combustion conditions without affecting the compression mechanism, simplifying the overall engine design.
2Quantity of substance
If solid fuels are used directly in conventional engines, then fuel availability and cost advantages are utilized, but conversion to liquid or gaseous forms is required
Solution Approach 1:
The invention changes the physical state parameter of the fuel by combusting solid fuel directly in the combustion chamber without requiring conversion to liquid or gaseous form. This parameter change eliminates the need for complex fuel conversion systems while maintaining fuel availability advantages.
Solution Approach 2:
The fuel conversion step is extracted and eliminated from the process. Solid fuel is fed directly into the combustion chamber where it combusts, removing the intermediate conversion stages required by conventional engines.
3Power
If high cycle temperatures and short combustion times are used in conventional engines, then power output is increased, but undesirable emissions such as partially-burned hydrocarbons and nitrogen oxides are produced
Solution Approach 1:
The combustion chamber provides a localized environment with specific temperature and pressure conditions optimized for complete combustion. This local quality control ensures thorough fuel combustion, reducing harmful emissions while maintaining power output.
Solution Approach 2:
The design uses excessive air supply to the combustion chamber to ensure complete combustion of solid fuel. This partial action of providing more air than strictly necessary for stoichiometric combustion ensures that all fuel is fully burned, minimizing partially-burned hydrocarbon emissions.
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
Enables efficient power generation from solid fuels, reducing emissions and maintaining high combustion chamber pressure for improved efficiency and reliability, while allowing for the use of various solid, liquid, and gaseous fuels.
Implementation Method 1
compress air within a cylinder
Implementation Method 2
solid fuel material can be situated and combusted
Implementation Method 3
combustion products...proceed via the output port and the second port to the part of the internal cavity
Data Source
AI summary
Internal combustion engines, including engines producing power from solid or slow burning fuel(s), such as biological-based or petroleum-based fuels, wood, corn, biomass, coal, and waste products, and/or possibly other liquid or gaseous fluids, as well as methods for operating or implementing such engines, are disclosed herein. In an example embodiment, the engine includes a crankshaft, a piston, a cylinder having an internal cavity and several ports, and an assembly having a chamber having a first region within which solid fuel can be situated and combusted. The assembly further includes a diverter valve so that, depending upon a setting of the valve and during engine operation, first and second amounts of compressed air respectively proceed to the first region and to bypass the first region, and a combination of combustion products and the second amount proceeds via one of the ports to the part of the internal cavity.