Rotary Piston Engine Adjustable Compression Ratio
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Solution Overview
Problem
Conventional four-stroke combustion engines with fixed cylinders and moving pistons face limitations in achieving optimal combustion efficiency and minimizing pollutants, particularly in terms of fuel versatility and exhaust gas quality.
Innovation Solution
A four-stroke rotary piston engine design where both the piston and cylinder move in a circular motion, utilizing a springless rotary gate valve and adjustable compressor and valve timing to optimize combustion, with a compression control device that adjusts the compression ratio and valve opening times, enabling efficient fuel utilization and reduced pollutants.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional fixed cylinder and moving piston design is used, then structural simplicity is maintained, but combustion efficiency and fuel versatility are limited
Solution Approach 1:
The patent implements a rotary piston engine where both the piston and cylinder move in circular motion rather than the conventional linear reciprocating motion. This dynamic design allows for adjustable compression ratios and valve timing, enabling optimal combustion across different fuel types while maintaining high combustion efficiency.
Solution Approach 2:
The engine features adjustable compression ratio and variable valve timing mechanisms that can be modified based on the specific fuel being used. This parameter adjustability allows the engine to optimize performance for different fuels (gasoline, diesel, alternative fuels) while maintaining high combustion efficiency and reducing emissions.
2Object-generated harmful factors
If fixed compression ratio and fixed valve timing are used, then device complexity is reduced, but combustion optimization and pollutant reduction are compromised
Solution Approach 1:
The patent incorporates adjustable compression ratio mechanisms and variable valve timing systems that can be dynamically modified to optimize combustion for different operating conditions. This reduces harmful emissions while the modular design keeps the complexity manageable through standardized adjustment mechanisms.
3Productivity
If springless rotary gate valve with maximum feed-through cross-section is used, then fill efficiency is improved, but valve control precision may be compromised
Solution Approach 1:
The patent employs a springless rotary gate valve design that provides both maximum feed-through cross-section for high fill efficiency and precise angular positioning capability. The rotary mechanism allows for accurate control of valve opening and closing timing while maintaining large flow areas, achieving both high productivity and precise timing control.
Data Source
AI summary
A four-stroke rotary-piston engine has an outer disk, and inner disk, at least one cylinder, at least one piston, at least one piston rod, a fixed gear engaged with a planet gear and a rotary gate valve positioned at a head of the cylinder. The inner disk is rotatable with respect to the outer disk by a compression control device. The planet gear rotates a crank situated on a shaft thereof. The shaft passes upwardly through the inner disk. The crank reciprocates a lever via the piston rod. The lever has an end pivoted on the outer disk so as to push the piston into and out of the cylinder.