Rotary Engine Uniform Torque via Segmented Combustion

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Solution Overview

Problem

Existing engines, particularly piston internal combustion engines, suffer from non-uniform torsion output leading to ineffective power conversion and increased noise due to reciprocating inertia forces and moments.

Innovation Solution

A rotary engine design featuring a stator and rotor with sliding assemblies, including a ring-shape groove, compression-resistant element, combustion chamber, and gas exchange channels, which allows for a one-way gas pressure flow path and synchronized operation of sliding assemblies to ensure continuous and uniform power output.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Power

If a piston internal combustion engine is used, then power conversion is achieved, but non-uniform torque output and great noise occur due to reciprocating inertia forces

Engineering Contradiction:
Improvepower conversionVSAvoidnoise and non-uniform torque output
Core Design Contradiction:
PowerVSObject-generated harmful factors

Solution Approach 1:

The engine is divided into multiple independent working chambers (first, second, third, and fourth working chambers) arranged radially around the rotor. Each chamber independently performs the complete thermodynamic cycle, which segments the power generation process into multiple simultaneous operations rather than sequential reciprocating motions, thereby achieving uniform torque output and reducing noise

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent inverts the traditional piston-engine architecture by replacing reciprocating pistons with a rotating rotor containing sliding assemblies. Instead of linear reciprocating motion converted to rotation, the system uses direct rotational motion with sliders moving radially within the rotor, fundamentally changing the motion pattern to eliminate reciprocating inertia forces while maintaining power conversion functionality

Inventive Principle:
Principle #13The other way round (Inversion)

2Speed

If a flywheel is used to realize inertial rotation, then rotation is maintained, but non-uniform torque output persists resulting in ineffective power conversion

Engineering Contradiction:
Improveinertial rotationVSAvoidpower conversion efficiency
Core Design Contradiction:
SpeedVSPower

Solution Approach 1:

The patent implements continuous useful action by having multiple working chambers operate simultaneously at different stages of the thermodynamic cycle. While one chamber is in the power stroke, others are in compression, intake, or exhaust phases, ensuring continuous power generation without the torque fluctuations that occur in sequential single-cylinder engines, thereby eliminating the need for flywheel-based inertial rotation

Inventive Principle:
Principle #20Continuity of useful action

3Productivity

If multiple sliding assemblies are used for simultaneous operations, then gas suction, compression, combustion and exhausting are performed simultaneously, but device complexity increases

Engineering Contradiction:
Improvesimultaneous operation efficiencyVSAvoidstructure complexity
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The patent merges multiple functional components into integrated structures: the rotor contains both the working chambers and sliding assemblies in a unified rotating structure, the stator provides both the compression-resistant elements and gas passage channels, and the sliding assemblies combine intake, compression, power, and exhaust functions in single moving components. This integration achieves simultaneous multi-stage operations while controlling overall device complexity through functional consolidation

Inventive Principle:
Principle #5Merging (Combining)

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 large torsion, uniform output, and reduced noise by ensuring continuous operation with no loss of gas pressure and simultaneous performance of gas suction, compression, combustion, and exhausting processes.

Implementation Method 1

the slider abuts against the compression-resistant element... the compression-resistant element is rotationally connected to the rotor... the combustible gas piston chamber is able to communicate with the arc-shape combustible gas groove and the combustion chamber

Methodology Applied
Scientific EffectCompression: Compression

Implementation Method 2

the combustion chamber is provided at the inner side wall of the stator, and intersects the ring-shape groove at one side of the compression-resistant element... the combustible gas piston chamber is able to communicate with the arc-shape combustible gas groove and the combustion chamber

Methodology Applied
Scientific EffectCombustion: Combustion

Implementation Method 3

the rotor further includes gas exchange channels, and each gas exchange channel extends from a bottom of the respective sliding rod slot to and runs through an outer wall of the rotor at a position where the gas exchange channel communicates with the ring-shape groove

Methodology Applied
Scientific EffectGas flow:

Data Source

PatentUS10774735B2Rotary engine and power output method
Publication Date: 2020.09.15 TANG YIHONG
  • US10774735B2 patent drawing
  • US10774735B2 patent drawing
  • US10774735B2 patent drawing

AI summary

A rotary engine is provided, comprising a stator and a rotor rotatably connected thereto. A stator holder with an annular recessed variable track guide groove is on each end of the stator. A sidewall, close to the rotor, of the stator is provided with an arc-shaped combustible gas groove, a combustible gas inlet, a ring-shape groove, a combustion chamber, a decompression device and an exhaust gas outlet. A compression-resistant element is provided in the ring-shape groove. The rotor is provided with a combustible gas piston chamber having a combustible gas piston, a slider slot having slider, and gas exchange channels. The sliders on the same generating line on the rotor and the combustible gas piston are connected fixedly to the same sliding rod in a sliding rod groove, and the two ends of the sliding rod extend into the annular recessed variable track guide groove of the corresponding stator holder.