Spiral Rotor Engine Motion Transformation
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Solution Overview
Problem
Internal combustion engines inefficiently convert rectilinear motion into curvilinear motion, leading to suboptimal energy use and increased fuel consumption, as traditional engines only utilize half of the output shaft revolution for active strokes and require significant energy for compression phases.
Innovation Solution
A system utilizing a rotor element with a closed spiral profile, allowing for continuous curvilinear motion transformation, where the spiral profile covers at least 270°, enabling reduced friction and adjustable piston strokes through sliding or rolling means, optimizing engine phases and reducing mass.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If traditional piston-crank mechanism is used for motion transformation, then the engine structure is simple, but the energy conversion efficiency is low and fuel consumption is high
Solution Approach 1:
The patent employs a spiral-shaped rotor profile instead of the traditional circular crank mechanism. The spiral geometry transforms the linear piston motion into rotational motion more efficiently, allowing the piston to push the rotor through approximately 270-360 degrees of rotation during the power stroke, compared to only 180 degrees in conventional engines. This curved spiral path optimizes the conversion of linear piston force into rotational torque, reducing energy losses.
Solution Approach 2:
The invention changes the geometric parameters of the motion transformation mechanism by using a spiral profile with specific angular extensions (270°, 300°, 340°-345° for four-stroke engines and 350°-355° for two-stroke engines). These parameter modifications enable the rotor to achieve near-complete revolutions during the power stroke, fundamentally improving energy conversion efficiency while maintaining structural feasibility.
2Device complexity
If the spiral profile covers only 270°, then the device complexity is reduced, but the piston stroke adjustment range is limited
Solution Approach 1:
The patent makes the spiral profile adjustable by providing multiple discrete angular extensions (270°, 300°, 340°-345° for four-stroke engines and 350°-355° for two-stroke engines). This dynamic configurability allows the engine to optimize piston stroke length based on operating conditions, fuel type, and performance requirements, enhancing adaptability without requiring a completely different mechanism for each configuration.
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
This system enhances fuel efficiency by allowing a single rotor to be in the compression stroke while others are in expansion, achieving nearly complete revolution with reduced energy consumption and adjustable strokes, leading to a remarkable reduction in mass and improved engine performance.
Implementation Method 1
a sliding or rolling means can operate, with the lowest possible friction, coupled at the end of the rod of a piston
Data Source
AI summary
The invention relates to an improved system for transformation of rectilinear motion into curvilinear motion, or vice versa, in an internal combustion engine. The system comprising a rotor element and a stator element, one of said the rotor element and stator element having a closed spiral profile. The spiral profile having a continuous curvilinear portion for at least 270°, and a ramp portion joining the ends of the continuous curvilinear portion.