Filter Purge System Using Reactive Propellant Impact Wave
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Solution Overview
Problem
Existing filter systems for internal combustion engines face challenges in efficiently removing particulate matter without increasing system cost and size, as they often require additional components like impact air valves, which may not provide optimal force and duration for particulate dislodgment.
Innovation Solution
A system utilizing a reactive propellant downstream of the filtering device generates an impact wave by initiating an oxidizing reaction, which is directed across the filter to dislodge entrained matter, eliminating the need for redundant filter systems and costly valves.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a secondary filter system is used to remove particulate matter, then the filter can be cleaned without disconnecting either filter from the engine, but the cost and size of the filter system increase
Solution Approach 1:
The invention extracts the particulate removal function from a secondary filter system and implements it through a propellant-based impact wave mechanism. The propellant is positioned downstream of the filter and generates an impact wave that travels through the filter media to dislodge trapped particulates, eliminating the need for a redundant filter assembly while maintaining effective cleaning capability
Solution Approach 2:
The invention replaces the mechanical secondary filter system with a propellant-driven impact wave mechanism. Instead of using a physical second filter to capture and redirect flow, the system uses controlled combustion of propellant to generate a pressure wave that mechanically dislodges particulates from the filter media, achieving the same cleaning effect with reduced system complexity
2Reliability
If an impact air valve is used to generate reverse flow, then particulate matter can be dislodged from the filter, but the overall cost and size of the system increase
Solution Approach 1:
The invention uses a disposable propellant charge instead of an expensive, complex impact air valve. The propellant is a consumable material that is ignited to generate the impact wave, then discarded after use. This replaces a costly mechanical valve assembly with a simple, inexpensive propellant cartridge that achieves the same particulate dislodgment function
Solution Approach 2:
The invention changes the physical parameters of the cleaning mechanism by using rapid combustion of propellant to generate a high-intensity pressure wave. Instead of using controlled reverse flow through a valve, the system uses explosive combustion to create a sharp impact wave that travels through the filter, changing the cleaning mechanism from gradual mechanical reversal to intense pressure impulse
3Productivity
If the impact wave force and duration are increased to improve particulate removal, then more matter is dislodged, but the system complexity and cost increase
Solution Approach 1:
The invention optimizes the impact wave parameters by carefully selecting propellant type, quantity, and configuration. By changing the propellant characteristics (chemical composition, grain geometry, mass), the system achieves the required impact wave force and duration directly from the combustion process, without needing additional mechanical amplification systems or complex control mechanisms
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 system effectively removes particulate matter from the filter without additional costly components, ensuring even distribution of the impact wave for thorough cleaning and reducing filter clogging, thus maintaining engine performance.
Implementation Method 1
initiating an oxidizing reaction. The method further includes generating an impact wave from the oxidizing reaction
Implementation Method 2
generating an impact wave from the oxidizing reaction and directing the impact wave across the filtering device
Data Source
AI summary
A system for removing matter from a filtering device is disclosed. The system may have a reactive propellant located downstream of the filtering device. The reactive propellant may be configured to generate an impact wave.