Hot Gas Engine with Orbital Cranking Mechanism
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional heat engines, both internal combustion and external combustion types, face inefficiencies and component wear due to high peak pressures, limiting their operational life to around 5,000-10,000 hours, which is insufficient for commercial viability, especially in applications requiring continuous operation for 5 years.
Innovation Solution
A dual cylinder chamber hot gas engine with an orbital cranking mechanism that operates at low pressures (6-10 bar) and temperatures below 700°C, utilizing a dual cylinder design with a piston that moves rectilinearly to minimize friction and an external heating chamber for efficient energy production, combined with a specific valve control mechanism to optimize the working cycle.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If conventional heat engines operate at high peak pressures (40-100 bar) to achieve peak power output, then power output is improved, but component wear increases and operational life decreases to 5,000-10,000 hours
Solution Approach 1:
The engine is divided into two separate cylinder chambers: a first chamber dedicated to compression and a second chamber dedicated to expansion. This segmentation allows each chamber to be optimized for its specific function, with the expansion chamber operating at lower pressures while still achieving high power output through the controlled expansion of heated gas.
Solution Approach 2:
A heating chamber acts as an intermediary between the compression and expansion chambers. Gas is compressed in the first chamber, then transferred to the heating chamber where it is heated to high temperatures, and finally expanded in the second chamber. This intermediary heating process allows the expansion to occur at lower pressures while maintaining high thermal efficiency.
2Productivity
If engines operate continuously for extended periods at peak power, then productivity is improved, but friction and wear increase reducing reliability
Solution Approach 1:
The engine operates at lower peak pressures (6-10 bar) compared to conventional engines (40-100 bar), while maintaining high thermal efficiency through the external heating process. This parameter change in operating pressure significantly reduces friction and wear on moving components, enabling continuous operation for 50,000+ hours.
Solution Approach 2:
The engine employs a cyclic process where gas is periodically compressed, heated, and expanded. The valve control system opens and closes inlet/outlet valves at specific timing to manage the periodic flow of gas between chambers, optimizing the thermodynamic cycle and reducing mechanical stress on components during continuous operation.
3Reliability
If a dual cylinder chamber design with orbital cranking mechanism is used to reduce pressures to 6-10 bar, then operational life is improved to 50,000 hours, but device complexity increases
Solution Approach 1:
The engine is divided into two separate cylinder chambers: a first chamber dedicated to compression and a second chamber dedicated to expansion. This segmentation allows each chamber to be optimized for its specific function, with the expansion chamber operating at lower pressures while still achieving high power output through the controlled expansion of heated gas.
Solution Approach 2:
The patent introduces an external heating chamber as a third spatial dimension in the thermodynamic process, separating the heating function from the compression and expansion functions. This dimensional addition allows the engine to achieve low-pressure operation while maintaining high thermal efficiency, as heating occurs outside the moving cylinder chambers.
4Loss of energy
If valve control timing is optimized to manage gas flow between chambers during the working cycle, then thermal efficiency is improved, but control complexity increases
Solution Approach 1:
The engine employs a cyclic process where gas is periodically compressed, heated, and expanded. The valve control system opens and closes inlet/outlet valves at specific timing to manage the periodic flow of gas between chambers, optimizing the thermodynamic cycle and reducing mechanical stress on components during continuous operation.
Solution Approach 2:
The valve control system is synchronized with the orbital cranking mechanism to provide feedback-based timing control. The position of the orbital crankshaft determines the precise timing for opening and closing valves, ensuring optimal gas flow management and thermal efficiency while maintaining coordinated operation of all engine components.
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 engine achieves extended operational life of 50,000 hours or more with reduced friction and wear, maintaining high mechanical efficiency and energy production, suitable for continuous operation in hybrid and other applications.
Implementation Method 1
heat is added to the gas flow in a heater outside the cylinder
Implementation Method 2
The power piston is thereby driven by a pulsating pressure wave
Implementation Method 3
A further object of the invention is to provide an orbital cranking mechanism for converting reciprocating linear motion of a piston into a rotational motion of a crankshaft
Data Source
AI summary
The engine includes a first and a second cylinder chamber. The first chamber receives gas through a first inlet valve which gas will be compressed by a piston in the cylinder and will leave the first chamber through a first outlet valve. The second chamber receives compressed gas from the first chamber through a second inlet valve. The gas expands in the second chamber while performing a work on the piston before leaving the second chamber through a second outlet valve. The engine is controlled such that gas will flow from the first to the second chamber while the engine performs a working cycle and the engine is thus controlled such that a piston is used for compressing gas which performs a work on the same piston, which is connected by a rod to a cranking mechanism to transfer work from the rod by an essentially only rectilinear movement.