Rotary Engine Vane Conduits for Efficient Gas Expansion
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Solution Overview
Problem
Internal combustion engines suffer from low efficiency and high pollutant emissions due to incomplete combustion, while external combustion engines are more efficient but complex and costly, especially at high rotational speeds.
Innovation Solution
A rotary engine design with multiple exit ports from at least one vane passageway, featuring a rotor with offset geometry and vanes that expand during the power stroke to increase the cross-sectional area for gas expansion, enhancing power and efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If internal combustion engines are used, then rotational power is produced, but energy conversion efficiency is low and pollutant emissions are high
Solution Approach 1:
The engine is divided into multiple independent combustion chambers arranged radially around the rotor, with each chamber having its own combustion process. This segmentation allows for more complete combustion in each chamber while maintaining overall engine efficiency, directly addressing the energy loss and pollution problem by optimizing the combustion process in distributed chambers rather than a single large chamber.
Solution Approach 2:
The engine employs periodic combustion events in each chamber synchronized with rotor position, creating continuous power delivery through sequential combustion cycles. This periodic action ensures complete combustion at optimal moments in each chamber, improving energy conversion efficiency and reducing incomplete combustion pollutants while maintaining smooth rotational output.
2Loss of energy
If external combustion engines are used, then energy conversion efficiency is improved, but device complexity and cost increase
Solution Approach 1:
The invention merges the advantages of external combustion (complete combustion, high efficiency) with the simplicity of internal combustion rotary engine design. Multiple combustion chambers are integrated directly into the rotary mechanism, eliminating the need for separate external combustion systems while achieving complete combustion through optimized chamber geometry and airflow management.
Solution Approach 2:
The combustion chambers serve multiple functions: they are the combustion space, the expansion space, and the exhaust path. This multi-functionality reduces overall engine complexity by eliminating separate components for each function while maintaining the efficiency benefits of complete combustion similar to external combustion engines.
3Power
If traditional single exit port design is used, then device complexity is low, but power output and efficiency are limited
Solution Approach 1:
The exhaust system is segmented into multiple independent conduits, each serving a specific combustion chamber. This segmentation allows for optimized exhaust flow from each chamber while maintaining manageable conduit complexity through modular design, directly enabling higher power output by efficiently extracting energy from multiple combustion events simultaneously.
Solution Approach 2:
The exhaust conduits are arranged radially in three-dimensional space around the rotor, utilizing spatial distribution to manage complexity. This three-dimensional arrangement allows multiple exhaust paths to coexist without interfering with each other, enabling increased power output through parallel exhaust flows while keeping the overall conduit system organized and manageable.
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 rotary engine design improves energy conversion efficiency and reduces pollutant emissions by optimizing the expansion process, resulting in increased power output and reduced complexity compared to traditional engines.
Implementation Method 1
the vanes that expand during the power stroke to increase the cross-sectional area for gas expansion, enhancing power and efficiency
Data Source
AI summary
A rotary engine is described including: (1) a rotor located within a housing, the rotor configured with a plurality of rotor vane slots; (2) a vane separating an interior space between the rotor and the housing into at least a trailing chamber and a leading chamber, where the vane slidingly engages a rotor vane slot; (3) a first passage through the vane, the first passage including a first exit port into the rotationally trailing chamber; and (4) a second exit port to the rotationally trailing chamber, where the first exit port and the second exit port connect to any of: (a) the first passage through the vane and (b) the first passage and a second passage through the vane, respectively. Optionally, one or more seals affixed to the vane and/or the rotor valve the first passage, the second passage, a vane wingtip, and/or a conduit through the rotor.