Internal Combustion Engine Cylinder Piston Opposing Motion
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Solution Overview
Problem
Commercial internal combustion engines face energy loss and increased complexity due to side loading of the cylinder, leading to wear and alignment issues between the piston and cylinder during the combustion cycle.
Innovation Solution
An internal combustion engine design where the cylinder unit and piston unit are rotatively coupled to spaced-apart crankshafts, allowing them to move in opposite directions along a longitudinal axis while maintaining balance around their respective centers of gravity, eliminating side loading and energy loss by simulating reciprocal motion without complete separation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If the piston and cylinder completely separate during the combustion cycle, then alignment precision can be maintained, but energy is lost due to side loading of the cylinder
Solution Approach 1:
The patent applies dynamics by making both the piston and cylinder movable rather than fixed or completely separated. The piston moves within the cylinder while both are supported by crankshafts, creating a dynamic system that maintains contact throughout the combustion cycle, eliminating side loading energy losses while preserving alignment through continuous mechanical engagement.
Solution Approach 2:
The patent uses counterweight principles by balancing the piston and cylinder assemblies on crankshafts with opposite rotation directions. This counterbalancing arrangement compensates for the forces that would cause side loading and separation, maintaining stable contact between piston and cylinder while eliminating energy losses associated with complete separation.
2Reliability
If the piston and cylinder completely separate during the combustion cycle, then alignment can be maintained, but the engine complexity and costs increase
Solution Approach 1:
The patent merges the functions of the piston and cylinder into a single integrated assembly that moves together rather than separating completely. Both components are supported by crankshafts and move in coordinated opposition, combining the alignment maintenance function with the power transmission function, thereby reducing the need for separate alignment mechanisms and lowering overall engine complexity.
Solution Approach 2:
The patent achieves multi-functionality by designing the piston-cylinder assembly to simultaneously maintain alignment, transmit power, and eliminate side loading effects. The opposite-direction motion of the piston and cylinder serves multiple purposes: it maintains precise alignment while transmitting combustion forces and preventing the cylinder from experiencing side loading, thereby reducing the need for additional alignment and support mechanisms.
3Ease of manufacture
If the piston moves in a stationary cylinder, then the structure is simple, but side loading occurs causing wear
Solution Approach 1:
The patent transforms the static piston-cylinder arrangement into a dynamic system where both components move in opposition to each other. This dynamic motion eliminates the side loading forces that cause wear in stationary cylinder designs, while the coordinated movement maintains structural integrity and simplifies the overall mechanism compared to completely separated piston-cylinder systems.
Solution Approach 2:
The patent applies counterweight principles by balancing the piston and cylinder assemblies on crankshafts that rotate in opposite directions. This counterbalancing arrangement counteracts the forces that would cause side loading and wear, allowing the piston to move within the cylinder without creating harmful lateral forces, thereby reducing wear while maintaining structural simplicity.
Data Source
AI summary
There is disclosed an internal combustion engine. The internal combustion engine includes a cylinder unit and a piston unit. The cylinder unit is rotatably coupled to a pair of spaced-apart crankshafts, with the cylinder unit moveable along a longitudinal axis. The piston unit is continually disposed within the cylinder unit, with the piston unit rotatively coupled to a second pair of spaced-apart crankshafts. The piston is moveable along the longitudinal axis in a direction opposite the direction of the cylinder during a combustion cycle. Both the cylinder unit and the piston unit are structured to be balanced relative to the respective center-of-gravity of each unit. Each center-of-gravity is located midway between the pair of spaced-apart crankshafts to which each unit is rotatively coupled.