Magnetic Return Valve for Prechamber Shock and Pressure Control
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Solution Overview
Problem
Existing valve ignition prechambers face challenges in achieving efficient and rapid combustion of highly diluted main charges in internal combustion engines due to the need for small gas ejection orifices, which compromise efficiency and longevity by requiring high compression energy and generating sudden pressure shocks.
Innovation Solution
The magnetic valve return device incorporates magnetic materials and a magnetic field source to magnetize the stratification valve and conduit, allowing for controlled valve movement and shock absorption, independent of pressure differences, thus optimizing the diameter of gas ejection orifices and injection pressure for improved efficiency and durability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If small gas ejection orifices are used to enable valve operation with small pressure differences, then valve maneuverability is improved, but engine efficiency deteriorates due to high compression energy requirements
Solution Approach 1:
The patent replaces the purely mechanical pressure-driven valve operation with a hybrid system incorporating magnetic fields. Magnets positioned in the combustion chamber generate magnetic forces that assist valve opening, allowing larger orifices to be used without compromising valve maneuverability, thereby improving engine efficiency while maintaining ease of operation.
Solution Approach 2:
The invention changes the physical parameters of valve operation by introducing magnetic force as an additional actuating mechanism. This allows the system to operate with larger gas ejection orifices and lower compression energy requirements while maintaining sufficient valve maneuverability through the combined effect of pressure difference and magnetic force.
2Reliability
If small gas ejection orifices are used to maximize pressure difference for valve operation, then valve control is improved, but sudden pressure shocks occur that reduce valve longevity
Solution Approach 1:
The magnetic assistance system replaces part of the mechanical pressure-based valve control with a controllable magnetic field system. This allows for smoother valve operation with reduced pressure shocks, improving both valve control reliability and extending valve lifespan by eliminating the need for extremely small orifices that cause sudden pressure spikes.
3Loss of energy
If large gas ejection orifices are used to improve engine efficiency, then energy efficiency is improved, but valve operation becomes difficult with small pressure differences
Solution Approach 1:
The patent introduces magnetic fields as a substitute for purely pressure-based valve operation. This enables the use of larger gas ejection orifices that improve energy efficiency while the magnetic force compensates for the reduced pressure difference, maintaining ease of valve operation.
Solution Approach 2:
The valve actuation system becomes multi-functional by combining both pressure difference and magnetic force mechanisms. This universal approach allows the system to operate efficiently with larger orifices while maintaining reliable valve operation through the dual-action actuation system.
4Ease of operation
If high compression pressure is used to operate the valve with small orifices, then valve opening is achieved, but shock absorption is insufficient reducing durability
Solution Approach 1:
The magnetic assistance system replaces the need for high compression pressure to achieve valve opening. By using magnetic force to assist valve actuation, the system can operate with lower compression pressures, thereby improving shock absorption capabilities and enhancing overall durability while maintaining ease of valve opening.
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 solution enables efficient operation of the valve ignition prechamber by ensuring rapid valve closure and cushioning shocks, maximizing engine efficiency and extending valve lifespan without compromising maneuverability, while allowing for flexible optimization of gas ejection orifice diameters and injection pressures.
Implementation Method 1
at least one magnetic field source (44) whose magnetic flux (54) passes through the stratification valve (13) and the stratification conduit (7) so as to magnetize said valve (13) and said conduit (7)
Implementation Method 2
At least one magnetic material which constitutes in whole or in part the stratification valve (13) and the stratification conduit (7); At least one magnetic field source whose magnetic flux passes through the stratification valve and the stratification conduit so as to magnetize said valve and said conduit
Data Source
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AI summary
The magnetic valve return device (42) is provided for a valve ignition prechamber (1) which has a stratification cavity (8) which is connected by a stratification conduit (7), which a stratification valve (13) can close, to a combustion chamber (5) which houses a main charge (30), a stratification injector (8) and ignition means (11) which open in said cavity (8) in order to inject and light a pilot charge (9) in order to ignite the main charge (30) via a torch ignition prechamber which the stratification valve (13) forms with the stratification conduit (7) when it does not close said conduit, said valve (13) otherwise being kept in contact with said conduit (7) by a magnetic field which is produced by a magnetic field source (44).