Multi-Port Rotary Engine Fuel Injection and Sealing
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Solution Overview
Problem
Internal combustion engines suffer from poor efficiency and pollution due to incomplete combustion, while external combustion engines are more complex and costly for high-power applications, and there is a need for a rotary engine that enhances power stroke efficiency.
Innovation Solution
A rotary engine with multiple fuel paths and a vane actuation system that includes stressed bands, lip seals, and dynamic caps to optimize fuel expansion and reduce back pressure, allowing for extended power stroke efficiency and broader applications.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If internal combustion engines are used, then power output is achieved, but combustion efficiency is poor and pollutants are released
Solution Approach 1:
The engine cycle is divided into separate compression and expansion chambers, allowing complete combustion in the compression chamber while expanding the combustion products in the expansion chamber. This segmentation enables the combustion process to be optimized for efficiency while maintaining power output.
Solution Approach 2:
Fuel is pre-mixed with air in the compression chamber before the power stroke, ensuring complete combustion occurs before the expansion phase begins. This preliminary preparation of the fuel-air mixture maximizes combustion efficiency and reduces unburned hydrocarbons.
2Loss of energy
If external combustion engines are used, then combustion efficiency is improved, but device complexity and cost increase for high-power applications
Solution Approach 1:
The invention merges the efficiency benefits of external combustion with the simplicity of internal combustion by integrating a compression chamber and expansion chamber into a single rotary engine unit. The rotor contains both chambers, eliminating the need for separate external combustion equipment while maintaining high combustion efficiency.
Solution Approach 2:
The engine transitions from traditional linear piston motion to rotary motion, with the rotor rotating within the housing. This dimensional change from reciprocating to rotary movement simplifies the mechanical structure while enabling the separation of compression and expansion functions within a compact design.
3Device complexity
If traditional rotary engine design is used, then simplicity is maintained, but power stroke efficiency is insufficient
Solution Approach 1:
The rotary engine is divided into distinct compression and expansion zones within the rotor, allowing the power stroke to be optimized separately from the compression process. This segmentation enables extended expansion ratio for improved power stroke efficiency while maintaining the rotary simplicity.
Solution Approach 2:
The engine optimizes the expansion ratio and pressure differential parameters during the power stroke by controlling the timing and positioning of the compression and expansion chambers. These parameter changes enhance power stroke efficiency without adding mechanical complexity.
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 achieves enhanced efficiency and power output by optimizing fuel expansion and reducing back pressure through multiple fuel paths and advanced sealing mechanisms, addressing the inefficiencies of traditional engines.
Implementation Method 1
a rotary engine apparatus and method of use thereof, where the rotary engine includes multiple fuel paths
Implementation Method 2
a rotary engine apparatus and method of use thereof, where the rotary engine includes multiple fuel paths
Implementation Method 3
A rotary engine with multiple fuel paths and a vane actuation system that includes stressed bands, lip seals, and dynamic caps to optimize fuel expansion and reduce back pressure
Data Source
AI summary
The invention comprises a rotary engine apparatus and method of use thereof, where the rotary engine comprises multiple injection ports. Optional injection ports include a first port in an expansion chamber, a second port in the expansion chamber after a first rotation of the rotor, a third port into the expansion chamber after a second rotation of the rotor, a fourth port from a fuel path through a shaft of the rotary engine, and/or a fifth port into a rotor-vane chamber between the rotor and a vane. Optionally, one or more of the injection ports are controlled through mechanical valving and/or through electronic and/or computer control.