Rotary Piston Engine Torus Cylinder Segmentation

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Solution Overview

Problem

Current engines, such as turbine engines, are inefficient outside of high power demands and lack the power-to-weight ratio and fuel efficiency needed for versatile applications, while internal combustion engines are not compact or lightweight enough for high-performance uses.

Innovation Solution

A rotary piston engine design featuring a torus-shaped cylinder with rotating pistons and a rotor, utilizing a modified Otto cycle for efficient power generation, with adjustable cylinder operation to match power demands, and incorporating a unique valve mechanism for improved fuel efficiency and compactness.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Power

If a turbine engine is used to achieve high power output, then power is improved, but fuel efficiency deteriorates when operating outside design load

Engineering Contradiction:
Improvepower outputVSAvoidfuel efficiency
Core Design Contradiction:
PowerVSLoss of energy

Solution Approach 1:

The engine dynamically switches between turbine mode and internal combustion mode based on power demand. At high power demands, the turbine operates efficiently; at lower demands, the system transitions to internal combustion engines that maintain fuel efficiency, thus resolving the contradiction between power output and fuel efficiency across varying loads

Inventive Principle:
Principle #15Dynamics

2Loss of energy

If a diesel engine is used to achieve fuel efficiency, then fuel efficiency is improved, but weight increases

Engineering Contradiction:
Improvefuel efficiencyVSAvoidengine weight
Core Design Contradiction:
Loss of energyVSWeight of moving object

Solution Approach 1:

The powertrain is segmented into multiple independent engines (turbine and internal combustion) rather than using a single large diesel engine. This allows the system to use lighter internal combustion engines that collectively provide the necessary power while maintaining fuel efficiency, thus reducing overall weight compared to a single large diesel engine

Inventive Principle:
Principle #1Segmentation

3Power

If a turbine engine is used to achieve high power-to-weight ratio, then power-to-weight ratio is improved, but manufacturing cost deteriorates

Engineering Contradiction:
Improvepower-to-weight ratioVSAvoidmanufacturing cost
Core Design Contradiction:
PowerVSEase of manufacture

Solution Approach 1:

The system uses multiple smaller internal combustion engines instead of a single large turbine engine. These smaller engines are more economical to manufacture while collectively providing the required power output, thus improving ease of manufacture while maintaining an acceptable power-to-weight ratio

Inventive Principle:
Principle #1Segmentation

4Loss of energy

If an internal combustion engine is used to achieve fuel efficiency at off-peak performance, then fuel efficiency is improved, but power-to-weight ratio deteriorates

Engineering Contradiction:
Improvefuel efficiencyVSAvoidpower-to-weight ratio
Core Design Contradiction:
Loss of energyVSPower

Solution Approach 1:

The system dynamically configures the number of internal combustion engines operating based on power demand. At off-peak performance, fewer engines operate to maintain fuel efficiency; at peak demand, more engines are activated to increase power output, thus dynamically balancing fuel efficiency and power-to-weight ratio

Inventive Principle:
Principle #15Dynamics

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 piston engine achieves high power density, fuel efficiency, and compactness, allowing for versatile applications by optimizing power generation across varying loads and reducing manufacturing costs compared to conventional engines.

Implementation Method 1

at least one piston disposed within the cylinder...combustion gases push each piston about the tows

Methodology Applied
Scientific EffectCompression: Compression

Implementation Method 2

combustion gases push each piston about the tows

Methodology Applied
Scientific EffectCombustion: Combustion

Data Source

PatentUS8936004B1Rotary piston engine
Publication Date: 2015.01.20 THE UNITED STATES OF AMERICA AS REPRESENTED BY THE SECRETARY OF THE NAVY
  • US8936004B1 patent drawing
  • US8936004B1 patent drawing
  • US8936004B1 patent drawing

AI summary

A rotary piston engine is provided that combines most of the advantages of an internal combustion engine with those of a turbine engine. The rotary piston engine improves on the existing internal combustion and turbine technology by achieving the same or better high end performance, while improving the efficiency during off-peak operations. The rotary piston engine includes an engine housing, at least one continuous cylinder doughnut, piston pedals, movable wall valves, at least one rotor and at least one point of rotation.