Compressionless Engine with Steam Condensing Manifold
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Solution Overview
Problem
Internal combustion engines face inefficiencies and challenges in using hydrogen as fuel due to uncontrolled explosions and harmful by-products when combusted with oxygen, and they lack effective engine braking capabilities, making them unsuitable for various applications.
Innovation Solution
An internal combustion engine that operates in both compressionless and compression generating modes, using a buffer of excess fuel or oxidant to prevent initial shock waves and achieve complete combustion, and employs a steam condensing manifold for contractive power strokes, allowing for efficient energy harnessing and engine braking.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-generated harmful factors
If hydrogen is combusted with pure oxygen, then harmful nitrogen-containing by-products are avoided, but uncontrolled explosion and shock waves occur
Solution Approach 1:
The patent introduces a buffer gas (nitrogen or carbon dioxide) as an intermediary substance mixed with the hydrogen-oxygen fuel mixture. This buffer gas acts as a mediator that absorbs excess energy during combustion, preventing uncontrolled explosions and shock waves while allowing the hydrogen and oxygen to combust completely without producing harmful nitrogen-containing by-products. The buffer gas is introduced in controlled amounts to achieve the desired balance between controlled combustion and complete fuel oxidation.
2Power
If a compression stroke is used in traditional engines, then the air-fuel mixture is compressed for combustion, but energy is lost during compression
Solution Approach 1:
The patent eliminates the compression stroke entirely by using a different approach: the fuel mixture (hydrogen, oxygen, and buffer gas) is introduced into the combustion chamber already in a ready state, and combustion is initiated directly without requiring mechanical compression. This preliminary preparation of the fuel mixture allows the engine to skip the energy-consuming compression phase while still achieving efficient combustion.
3Loss of energy
If engines without compression cycle are used, then compressive losses are avoided, but engine braking capability is lost
Solution Approach 1:
The patent designs the combustion chamber and valve system to perform multiple functions: during normal operation, the system enables efficient combustion without compression strokes; during braking operations, the same system can admit the fuel mixture and control combustion to provide engine braking capability. The multi-functionality is achieved through programmable valve timing and control systems that can switch between different operating modes (power generation, braking, compressionless operation) using the same hardware components.
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
The engine achieves increased efficiency by avoiding compressive losses, reduces harmful by-products, and provides effective engine braking capabilities, enabling more efficient and environmentally friendly operation with hydrogen and oxygen.
Implementation Method 1
a steam condensing manifold configured to condense a product of combustion of the internal combustion engine to generate a low-pressure environment to thereby provide a contractive power stroke to the engine
Implementation Method 2
an expansive power stroke provided by combustion of a fuel gas mixture in the combustion chamber
Data Source
AI summary
An internal combustion engine and a method of controlling an internal combustion engine are provided, that are more efficient than existing engines. The internal combustion engine includes a combustion chamber, and the engine is configurable to operate in: a compressionless operating mode where the engine is driven by combustion of fuel and oxidant in the combustion chamber without compression of the fuel and oxidant; and a compression generating operating mode where the engine is used to compress fluid in the combustion chamber.