Pistonless Rotary Engine Design for Friction Reduction
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Solution Overview
Problem
Current internal combustion engines face challenges in converting combustion energy into rotary motion efficiently, particularly in transportation and industrial applications, due to high friction, vibration, noise, and poor fuel economy in traditional piston engines, and limited success with rotary engines like the Wankel engine.
Innovation Solution
A pistonless, low-friction rotary engine design utilizing intermittent internal combustion, featuring a compressor, fuel mixing system, combustion chamber, ignition system, exhaust port, and turbine with multiple turbine blades, where the fuel-oxidizer mixture is ignited and the exhaust energy is used to rotate the turbine shaft, potentially enhanced with a secondary engine for capturing additional energy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If conventional reciprocating piston engines are used, then reliable rotary motion is produced, but energy efficiency deteriorates due to conversion losses from linear to rotary motion
Solution Approach 1:
The patent removes the piston and crankshaft mechanism from the engine design, extracting the problematic linear-to-rotary motion conversion components. The combustion chambers directly rotate around the output shaft, eliminating the need for reciprocating pistons and connecting rods, thus reducing mechanical complexity and energy conversion losses.
Solution Approach 2:
Instead of the traditional approach where pistons move linearly and convert to rotary motion via crankshaft, this patent inverts the approach by having the combustion chambers themselves rotate directly. The combustion energy directly drives rotational motion rather than first creating linear motion that must then be converted.
2Power
If Wankel rotary engine design is used, then power-to-weight ratio is improved, but combustion efficiency deteriorates due to non-uniform chamber shape
Solution Approach 1:
The patent applies different geometric characteristics to different parts of the combustion chamber. The outer housing has an eccentric oval shape for compactness and balance, while the inner combustion chamber surfaces are specifically shaped to create uniform combustion patterns. This local differentiation allows the chamber to achieve both compact rotational design and efficient combustion.
Solution Approach 2:
The combustion chambers are designed to dynamically adapt their effective volume and shape during rotation. As chambers rotate around the eccentric shaft, their volume naturally varies in a controlled manner that optimizes combustion at different positions in the cycle, maintaining efficient burning throughout the rotational motion.
3Productivity
If intermittent combustion is used, then rotary motion is produced directly, but combustion uniformity deteriorates causing poor fuel economy
Solution Approach 1:
The patent designs the system so that multiple combustion chambers are positioned around the rotating shaft, allowing continuous combustion as chambers sequentially pass through the combustion zone. This creates a more continuous energy release pattern compared to single-chamber intermittent combustion, improving fuel efficiency while maintaining direct rotary motion output.
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
This design aims to improve power-to-weight ratio, reduce vibration, and enhance fuel efficiency by directly converting combustion energy into rotary motion with reduced friction and increased power output, addressing the limitations of traditional engines.
Implementation Method 1
a turbine having a rotating shaft and a plurality of turbine blades connected downstream of the combustion chamber for receiving the exhaust whereby the fluid force of the exhaust through the exhaust port causes the turbine blades to rotate the shaft
Implementation Method 2
at least one ignition system connected to the combustion chamber for igniting the fuel-oxidizer mixture inside of the combustion chamber
Implementation Method 3
a combustion chamber adapted to receive the fuel-oxidizer mixture, at least one ignition system connected to the combustion chamber for igniting the fuel-oxidizer mixture inside of the combustion chamber
Data Source
AI summary
An engine having a compressor for generating a flow of pressurized oxidizer, a fuel mixing system in fluid communication with the compressor for mixing fuel with the pressurized oxidizer creating a fuel-oxidizer mixture, a combustion chamber adapted to receive the fuel-oxidizer mixture, at least one ignition system connected to the combustion chamber for igniting the fuel-oxidizer mixture inside of the combustion chamber, an exhaust port in fluid communication with the combustion chamber for receiving exhaust generated by combustion of the fuel-oxidizer mixture, and a turbine having a rotating shaft and a plurality of turbine blades connected downstream of the combustion chamber for receiving the exhaust whereby the fluid force of the exhaust through the exhaust port causes the turbine blades to rotate the shaft.