Spinning Gas Internal Combustion Engine Efficiency

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Solution Overview

Problem

Internal combustion engines do not effectively utilize the increased heat capacity of a spinning gas to enhance fuel efficiency, as they lack the technology to initiate and control rapid spinning of the working gas, leading to inefficiencies in the Otto and Diesel cycles.

Innovation Solution

An internal combustion engine design that includes a main cylinder and piston configured to rapidly spin an air/fuel mixture, creating a spinning air/fuel mixture with increased heat capacity, which is then compressed and ignited to extract mechanical energy, with a flywheel aiding in rotation initiation and control, achieving a 10-40% efficiency gain compared to conventional engines.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If conventional internal combustion engines operate without spinning the working gas, then the engine structure remains simple and easy to manufacture, but the fuel efficiency is limited and cannot utilize rotation-dependent heat capacity

Engineering Contradiction:
Improveengine structure simplicityVSAvoidfuel efficiency
Core Design Contradiction:
Ease of manufactureVSProductivity

Solution Approach 1:

The patent introduces dynamic spinning motion to the working gas within the combustion chamber, transforming the static gas into a rotating fluid with enhanced thermodynamic properties. The spinning gas creates rotation-dependent heat capacity effects that improve fuel efficiency without requiring fundamental changes to engine architecture

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The invention changes the rotational state parameter of the working gas from zero (conventional) to high-speed rotation (spinning). This parameter change activates rotation-dependent heat capacity, allowing the gas to absorb and release heat more effectively during the thermodynamic cycle, thereby improving fuel efficiency

Inventive Principle:
Principle #35Parameter changes

2Productivity

If the working gas is spun rapidly to increase heat capacity, then fuel efficiency improves by 10-40%, but the device complexity increases due to additional spinning mechanisms

Engineering Contradiction:
Improvefuel efficiencyVSAvoidspinning mechanism complexity
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The combustion chamber serves multiple functions: it contains the fuel-air mixture, provides the combustion space, and acts as the spinning mechanism through its geometric design. The chamber's shape and internal features generate and maintain gas rotation without requiring separate spinning devices, thus avoiding additional complexity

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

The working gas itself generates and maintains the spinning motion through the combustion process and chamber geometry. The expansion forces and pressure gradients created during combustion naturally induce rotation, allowing the system to spin the gas without external actuators or complex mechanical systems

Inventive Principle:
Principle #25Self-service

3Use of energy by moving object

If spinning gas is used in the engine cycle, then the heat capacity increases substantially, but control of turbulence and initiation of spinning becomes technically challenging

Engineering Contradiction:
Improveheat capacityVSAvoidspinning control
Core Design Contradiction:
Use of energy by moving objectVSEase of operation

Solution Approach 1:

The combustion chamber incorporates localized geometric features such as angled surfaces, swirl generators, or asymmetric inlet ports that create controlled turbulence and initiate spinning motion in specific regions. These local structural modifications guide the flow to generate rotation while maintaining overall control of the combustion process

Inventive Principle:
Principle #3Local quality

4Productivity

If the engine operates at low temperatures with spinning gas, then fuel efficiency gains increase, but the complexity of controlling the spinning process increases

Engineering Contradiction:
Improvefuel efficiency at low temperatureVSAvoidspinning control system
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The combustion chamber geometry is designed to maintain effective gas spinning across a range of operating temperatures. The dynamic flow patterns and rotation mechanisms adapt to temperature changes, ensuring that the rotation-dependent heat capacity benefits are realized even at low temperatures without requiring additional control systems

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 engine achieves a significant efficiency gain of 10-40% at conventional engine temperatures by utilizing the rotation-dependent heat capacity of the spinning gas, with the potential for even greater gains at low temperatures, reducing NOx emissions and improving engine performance.

Implementation Method 1

A gas spinning at sonic velocities has an effectively higher heat capacity, which can be used to modify engine fuel cycles

Methodology Applied
Scientific EffectRotation-dependent heat capacity:

Implementation Method 2

the spin must be rapid enough to affect the moment of inertia of the gas

Methodology Applied
Scientific EffectCentrifugal force: Centrifugal Force

Implementation Method 3

The main cylinder and main piston are configured to compress the spinning air/fuel mixture to create an ignitable spinning air/fuel mixture

Methodology Applied
Scientific EffectCompression: Compression

Implementation Method 4

The main cylinder is also configured to ignite the rotating gas thereby creating an ignited spinning air/fuel mixture

Methodology Applied
Scientific EffectCombustion: Combustion

Implementation Method 5

The main cylinder and main piston are configured to extract mechanical energy from the ignited spinning air/fuel mixture

Methodology Applied
Scientific EffectThermal expansion: Thermal Expansion

Implementation Method 6

At least one intake valve may be arranged tangential to a surface of the main cylinder to initiate rotation of the air/fuel mixture to produce an intake of gas with a net angular momentum about the main axis

Methodology Applied
Scientific EffectAngular momentum: Angular Momentum

Data Source

PatentUS10450943B2Otto and diesel cycles employing spinning gas
Publication Date: 2019.10.22 THE TRUSTEES OF PRINCETON UNIV
  • US10450943B2 patent drawing
  • US10450943B2 patent drawing
  • US10450943B2 patent drawing

AI summary

An internal combustion engine is disclosed and includes a main cylinder and main piston that are relatively axially displaceable along a main axis to define a variable volume main working chamber. At least one valve is configured to admit air and fuel into the working chamber forming an air/fuel mixture. The main cylinder is configured to cause the air/fuel mixture in the main cylinder to spin rapidly enough to cause a substantive change in the heat capacity of the air/fuel mixture creating a spinning air/fuel mixture. The main cylinder and main piston are configured to compress the spinning air/fuel mixture to create an ignitable spinning air/fuel mixture. The spinning air/fuel mixture is ignited and the main cylinder and main piston are configured to extract mechanical energy from the ignited spinning air/fuel mixture. An exhaust valve is configured to exhaust combustion products from the main working chamber.