Guide Stud Valve for Torch Ignition Prechambers
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Solution Overview
Problem
The existing lamination valve in torch ignition prechambers for internal combustion engines tilts during operation, leading to inhomogeneous ignition torches, unstable combustion, and mechanical jamming, which affects energy efficiency and vibro-acoustic behavior.
Innovation Solution
The guide stud valve maintains parallelism with the valve closure seat throughout its travel, ensuring simultaneous and uniform emission of ignition torches, optimizing combustion homogeneity and preventing mechanical jamming.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a lamination valve is used in a torch ignition prechamber, then the valve can close the lamination duct to isolate the lamination cavity from the combustion chamber, but the valve tilts during operation causing inhomogeneous ignition torches and unstable combustion
Solution Approach 1:
The patent introduces a guide stud as an intermediary element that guides the valve during its movement. The guide stud ensures the valve remains parallel to the valve closure seat throughout its travel, preventing tilting and ensuring homogeneous ignition torch emission while maintaining reliable combustion stability
2Duration of action of stationary object
If the valve thickness is increased to prevent cracking from shock contacts, then the valve durability improves, but the valve weight becomes excessive
Solution Approach 1:
The patent introduces a damping chamber that cushions the valve before it contacts the valve closure seat. This cushioning mechanism absorbs shock energy, preventing valve cracking without requiring excessive valve thickness, thus maintaining durability while keeping weight reasonable
3Extent of automation
If the valve is returned to the closure seat by a magnetic field, then the valve operation is automated and response is improved, but the valve tilts relative to the lamination duct causing detachment issues
Solution Approach 1:
The guide stud acts as a mediator between the magnetic field return force and the valve movement. It constrains the valve to move parallel to the closure seat, ensuring smooth detachment and preventing tilting even when the valve is returned by automated magnetic field forces
4Force
If the valve tilts during operation, then the valve can accommodate pressure forces, but the ignition torches become inhomogeneous and combustion becomes unstable
Solution Approach 1:
The guide stud serves as a mediator that allows the valve to accommodate pressure forces through proper seating while preventing tilting. The guide stud ensures the valve remains parallel to the closure seat, maintaining uniform ignition torch emission while still allowing the valve to respond to pressure differential forces
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 achieves simultaneous and uniform ignition torch emission, enhancing energy efficiency, stability, and safety while preventing mechanical jamming and abrasive wear.
Implementation Method 1
at least one orientation stud which is fixedly secured to the valve main body and which protrudes from the opening axial face; at least one guide axial orifice which is arranged in or near the chamber-side valve stop and in which is housed the orientation stud with small radial play
Implementation Method 2
a valve damping chamber formed by the lamination duct, the opening axial face and the chamber-side valve stop, the volume of which is at its maximum when the closure axial face rests on the duct closure seat, and at its minimum when the opening axial face rests on the chamber-side valve stop
Data Source
AI summary
The stud-oriented valve (50) includes a valve main body (8) which is housed in a lamination duct (7) and which exhibits a closure axial face (10) which can rest on a duct closure seat (11) for isolating a lamination cavity (4) from a combustion chamber (5), said body (8) also having a centering peripheral surface (12), an opening axial face (13) which may rest on a chamber-side valve stop (14), and at least one orientation stud (15) which protrudes from the opening axial face (13), said stud (15) being capable to slide through a guide axial orifice (17) that is fixed to the lamination duct (7).