Rotary Piston Engine Radial Combustion Chambers
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Solution Overview
Problem
Conventional Wankel rotary engines suffer from high fuel consumption and emissions due to their long and narrow combustion chamber, which restricts combustion efficiency, while reciprocating piston engines have a more complex structure and lower power-to-weight ratio.
Innovation Solution
A rotary piston engine design featuring a rotating rotor that divides the shell cavity into compression chambers with variable volume, with combustion chambers arranged on the outer ring of the shell, connected to the main shaft via a transmission system, and an exhaust device for forced gas expulsion, enhancing combustion efficiency and chamber sealing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a Wankel rotary engine structure is used, then the structure is simple and power-to-weight ratio is high, but the combustion chamber becomes long and narrow resulting in poor combustion efficiency
Solution Approach 1:
The combustion chamber is divided into multiple smaller chambers arranged radially around the rotor shaft. Each combustion chamber receives compressed gas from the rotor and performs combustion independently, transforming the single long-narrow chamber into multiple compact chambers with better combustion characteristics.
Solution Approach 2:
The combustion chambers are arranged radially in the circumferential direction around the rotor shaft, adding a circumferential dimension to the combustion process. This radial arrangement allows multiple combustion events to occur simultaneously at different angular positions, shortening the overall combustion duration while maintaining the rotary engine's compact structure.
2Productivity
If a reciprocating piston engine is used, then combustion efficiency is high, but the structure becomes more complex and power-to-weight ratio decreases
Solution Approach 1:
The invention merges the advantages of both Wankel rotary engines and reciprocating piston engines by combining the rotary motion and compact structure of Wankel engines with the radial combustion chamber arrangement that provides better combustion efficiency. The rotor continues to rotate continuously while compressed gas is fed radially into combustion chambers arranged around the shaft, creating a hybrid approach that achieves both simplicity and efficiency.
3Productivity
If combustion chambers are arranged radially around the rotor shaft, then combustion duration is shortened and combustion efficiency is improved, but the transmission system complexity increases
Solution Approach 1:
A transmission system acts as an intermediary between the rotor and the combustion chambers. The transmission system includes a transmission shaft connected to the rotor shaft and transmission mechanisms that deliver compressed gas from the rotor to each radial combustion chamber at the appropriate timing, mediating the power transfer while maintaining synchronized combustion across all chambers.
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 improves combustion efficiency by shortening combustion duration and forcibly expelling waste gases, preventing their impact on fresh gas entry, thus enhancing engine performance.
Implementation Method 1
a first spring is mounted between the roller groove and the cylinder bearer for keeping the first pin roller in contact with the outer surface of the rotor during the rotation of the rotor
Implementation Method 2
each of the combustion chambers drives the main shaft of the rotor to rotate by combustion of compressed gas
Data Source
AI summary
A rotary piston engine is provided. The rotary piston engine includes a shell and a rotor, the rotating rotor is arranged in the shell and divides a rotor cavity into compression chambers with a variable volume, a plurality of combustion chambers rotating around a main shaft of the rotor are arranged on an outer ring of the shell, and any one of the plurality of combustion chambers is communicated with the compression chambers; the plurality of combustion chambers are in a transmission connection with the main shaft of the rotor via a transmission system, and each of the plurality of combustion chambers drives the main shaft of the rotor to rotate by a combustion of a compressed combustible gas mixture. The shell includes an upper cylinder cover and a lower cylinder cover, and a boss of the upper cylinder cover is fitted with a spigot of the lower cylinder cover.