Vane Heat Engine Adjustable Expansion Wall
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Solution Overview
Problem
Existing vane heat engines lack efficiency in utilizing potential energy due to fixed expansion chamber volumes, which restricts the ability to achieve desired compartment pressures and optimal gas expansion, leading to suboptimal engine performance.
Innovation Solution
A vane heat engine with an adjustable expansion chamber wall, made of flexible yet strong members, allows for variable compartment volumes by adjusting the position of the expansion chamber wall, enabling full expansion of gas to match ambient pressure at exhaust, thereby enhancing engine efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the expansion chamber volume is fixed, then the engine structure is simple, but the engine cannot achieve desired compartment pressures and optimal gas expansion
Solution Approach 1:
The expansion chamber wall is made adjustable to change the volume of the expansion chamber dynamically. This allows the engine to optimize gas expansion and achieve desired compartment pressures, directly improving engine efficiency while managing the complexity through a focused adjustment mechanism
2Adaptability or versatility
If the expansion chamber wall is made of multiple members, then the wall is flexible yet strong, but the manufacturing complexity increases
Solution Approach 1:
The expansion chamber wall is divided into multiple members that can move relative to each other. This segmentation provides the necessary flexibility for volume adjustment while maintaining structural strength, and allows for modular manufacturing and assembly
Solution Approach 2:
The wall members are designed with flexible yet strong characteristics, allowing them to bend and adjust position while maintaining structural integrity. This enables the expansion chamber to dynamically change volume in response to operating conditions
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 adjustable expansion chamber wall allows for optimal compartment pressure matching and efficient gas expansion, increasing engine efficiency by ensuring the pressure within the cavity equals ambient pressure at exhaust, leading to improved power output and thermodynamic performance.
Implementation Method 1
The expansion wall can be made of a plurality of members, whereby the expansion wall is flexible along its longitudinal dimension yet strong perpendicular to the longitudinal dimension
Implementation Method 2
as the ratio of input pressure to output pressure changes, the increasing and decreasing cavity size provided by the adjustable expansion chamber wall allows for full expansion of a gas within the cavity so that the pressure within the cavity can be equal or close to equal to the ambient pressure at the point of exhaust
Data Source
AI summary
The present invention relates to a vane heat engine and in particular to a vane heat engine efficiently utilizing potential energy and having an adjustable expansion chamber wall so that the volume of the expansion chamber is adjustable. The engine has a housing with an inlet and an outlet. A rotor with a plurality of vanes is provided to rotate within the housing. An adjuster is provided for adjusting the location of an expansion chamber wall. The position or location of the expansion chamber wall determines the volume within a plurality of compartments bound by the rotor, the expansion chamber wall and two of the plurality of vanes. The expansion wall can be made of a plurality of members, whereby the expansion wall is flexible along its longitudinal dimension yet strong perpendicular to the longitudinal dimension.