Rotary Engine Combustion Assembly Intermittent Firing

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Solution Overview

Problem

Existing internal combustion engines face challenges in maximizing efficiency while minimizing costs, weight, and maintenance, particularly in achieving intermittent combustion without complex mechanical motion.

Innovation Solution

The Riley cycle-based system employs a compression assembly to compress fluid to a high pressure, a tank assembly to hold a large volume of compressed fluid, and a combustion assembly that receives a small portion of compressed air for each power stroke, allowing for intermittent combustion without reciprocating action.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Power

If gas turbine engines are used, then power-to-weight ratio is improved, but fuel efficiency deteriorates

Engineering Contradiction:
Improvepower-to-weight ratioVSAvoidfuel efficiency
Core Design Contradiction:
PowerVSUse of energy by moving object

Solution Approach 1:

The engine is divided into separate functional components: a compressor assembly that rotates continuously to compress air, and a combustion assembly that operates intermittently to drive a power rotor. This segmentation allows each component to be optimized independently, enabling gas turbine-like continuous compression while achieving reciprocating-engine-like intermittent combustion for improved fuel efficiency.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The combustion assembly operates in periodic cycles, receiving compressed air from the compressor, combusting fuel intermittently, and driving the power rotor during power strokes. This periodic combustion approach combines the continuous operation advantage of gas turbines with the fuel efficiency of intermittent combustion, resolving the contradiction between power output and fuel consumption.

Inventive Principle:
Principle #19Periodic action

2Use of energy by moving object

If reciprocating engines are used, then fuel efficiency is improved, but power-to-weight ratio deteriorates

Engineering Contradiction:
Improvefuel efficiencyVSAvoidpower-to-weight ratio
Core Design Contradiction:
Use of energy by moving objectVSPower

Solution Approach 1:

The traditional reciprocating piston mechanism is replaced with a rotary compressor assembly that provides continuous compression without reciprocating motion. This substitution eliminates the mechanical complexity and weight of reciprocating components while maintaining the fuel efficiency benefits of controlled combustion timing.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

3Use of energy by moving object

If intermittent combustion is implemented, then fuel efficiency is improved, but device complexity worsens

Engineering Contradiction:
Improvefuel efficiencyVSAvoidmechanical motion complexity
Core Design Contradiction:
Use of energy by moving objectVSDevice complexity

Solution Approach 1:

Intermittent combustion is achieved without complex reciprocating mechanisms by using a continuously rotating compressor assembly paired with a combustion assembly that fires periodically. The continuous rotation simplifies the mechanical system compared to traditional reciprocating engines, while the intermittent combustion maintains fuel efficiency advantages.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

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 approach enables efficient, continuous rotational motion with reduced transitional losses, improved fuel efficiency, and lower maintenance requirements, while also allowing for flexible fuel use and efficient expansion ratios.

Implementation Method 1

a compression assembly to compress fluid to a high pressure

Methodology Applied
Scientific EffectCompression: Compression

Implementation Method 2

a combustion assembly that receives a small portion of compressed air for each power stroke

Methodology Applied
Scientific EffectCombustion: Combustion

Implementation Method 3

The expanding working fluid is directed through blades of the turbine, thereby causing the turbine to rotate

Methodology Applied
Scientific EffectFluid expansion: Pressure Gradient

Data Source

PatentUS20250179956A1Rotary engine, parts thereof, and methods
Publication Date: 2025.06.05 ASTRON AEROSPACE LLC
  • US20250179956A1 patent drawing
  • US20250179956A1 patent drawing
  • US20250179956A1 patent drawing

AI summary

A rotary engine, parts thereof, and methods associated therewith is provided. The engine is modular and adjustable to accommodate a variety of requirements and preferences. The system includes a combustion assembly having a housing and a power rotor positioned therein. The power rotor rotates in a first direction from the beginning of each combustion process through the end of each exhaust process. The system also includes a compression assembly linked to the combustion assembly such that the compression rotor rotates in the first direction from the beginning of each intake process through the end of each compression process. A tank assembly in fluid communication with the compression assembly and the combustion assembly provides stability to the system while eliminating or otherwise reducing transitional loses.