Passive Bypass Filter for Transfer Case Lubrication
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Solution Overview
Problem
Transfer case lubrication becomes contaminated over time due to wear of mechanical components, leading to increased wear and reduced efficiency, as existing technologies fail to effectively remove particulate matter from the sealed housing.
Innovation Solution
An apparatus with a vessel and filter system within the transfer case housing, utilizing gravity and a magnet to passively remove contaminants from the lubrication fluid, ensuring continuous lubrication and reducing wear on components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the transfer case remains sealed to maintain lubrication, then lubrication is preserved, but contaminants accumulate over time
Solution Approach 1:
The housing is divided into a filtered lubricant reservoir section and a contaminated lubricant section. The vessel with filter media creates a separate zone where clean lubricant is maintained, while allowing the rest of the system to continue operating with contaminated lubricant until it can be replaced.
Solution Approach 2:
A filter media (such as foam or paper) is introduced as an intermediary substance between the clean and contaminated lubricant sections. This filter media captures contaminants while allowing lubricant to pass through, enabling continuous separation without requiring system disassembly.
2Object-affected harmful factors
If active filtration systems are installed to remove contaminants, then contaminant removal is improved, but system complexity and energy consumption increase
Solution Approach 1:
The system uses the natural circulation and splashing of lubricant within the transfer case to drive the filtration process. The lubricant automatically flows into the vessel, passes through the filter media, and returns to the housing without requiring external power sources or active pumping mechanisms.
Solution Approach 2:
The patent replaces complex active mechanical filtration systems with a passive chemical/physical filtration approach using filter media. This substitution eliminates the need for motors, pumps, and complex control systems while achieving effective contaminant removal through the inherent motion of the lubricant.
3Object-affected harmful factors
If filtration is implemented to remove particulate matter, then lubrication quality is improved, but lubrication flow may be restricted
Solution Approach 1:
The filter media utilizes porous structures (such as foam or fibrous paper) that allow lubricant to pass through while trapping particulate contaminants. The porosity of the material is optimized to maintain adequate flow rates while effectively filtering the lubricant.
Solution Approach 2:
The system filters only a portion of the total lubricant volume at any given time, as the lubricant continuously circulates between the filtered and unfiltered sections. This partial action approach maintains adequate lubrication flow to all components while gradually improving overall lubricant quality over time.
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
Effectively removes particulate contaminants from the lubrication fluid, maintaining the integrity of the lubrication system and reducing wear on mechanical components, while ensuring adequate lubrication is maintained within the transfer case.
Implementation Method 1
A magnet is disposed in the interior of the vessel, the magnet located proximate the bottom of the vessel
Implementation Method 2
Lubrication contained within the housing flows along the inside surface of the housing into the vessel through the open top
Implementation Method 3
A filter is secured to the vessel. The filter provides fluid communication between the interior of the vessel and the interior of the housing
Data Source
AI summary
An apparatus for reducing contaminants in lubrication for a transfer case. The apparatus utilizes the tendencies of a transfer case to splash and otherwise project internal sealed lubricant in numerous directions within the case, along with gravitational forces acting on the lubricant, to passively filter and otherwise remove particulate contaminates from the lubrication. The apparatus for containing lubricated mechanical components comprising a housing and a vessel. The vessel has an open top. The vessel is located proximate an inside surface of the housing. A filter is secured to the vessel. Lubrication contained within the housing flows along an inside surface of the housing into the vessel through the open top, and further flows out of the vessel through the filter.