Transfer Case Lubrication Snubber Passive Drive Chain Delivery
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Solution Overview
Problem
Existing transfer case lubrication systems that rely on powered pumps introduce mechanical or electrical loads on the engine, leading to inefficiencies in delivering lubricant to rotating and actuated components.
Innovation Solution
A passive lubrication system utilizing a snubber with a channel and conduit, where a drive chain collects and conveys lubricant from a sump, allowing it to be passively delivered to critical components via a hose, eliminating the need for powered pumps.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a powered pump is used to deliver lubricant to transfer case components, then lubrication reliability is improved, but mechanical or electrical load on the engine increases
Solution Approach 1:
The drive chain serves a dual function: transmitting power and collecting/delivering lubricant. The chain's movement through the sump and along the transfer case housing passively distributes lubricant to bearings and components without requiring a separate powered pump, making the system self-sufficient and eliminating engine load from lubrication purposes
Solution Approach 2:
The drive chain is designed to perform multiple functions simultaneously: power transmission and lubricant delivery. By utilizing the existing chain's motion and structure for lubrication purposes, the patent eliminates the need for a dedicated pump while maintaining reliable lubrication of all transfer case components
2Reliability
If a powered pump is installed to deliver lubricant, then lubrication coverage is improved, but device complexity increases
Solution Approach 1:
The drive chain performs dual functions as both a power transmission element and a lubricant delivery mechanism. The chain picks up lubricant from the sump and passively distributes it to bearings and components throughout the transfer case, eliminating the need for a separate pump system and reducing overall device complexity
Solution Approach 2:
The lubrication function is merged with the existing power transmission system. The drive chain, already present for mechanical power delivery, is also utilized as the lubricant collection and distribution medium, combining two functions into a single component and simplifying the overall system architecture
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 effectively delivers lubricant to transfer case components without inducing mechanical or electrical loads on the engine, enhancing efficiency and reducing system losses.
Implementation Method 1
A passive lubrication system utilizing a snubber with a channel and conduit, where a drive chain collects and conveys lubricant from a sump
Data Source
AI summary
A lubrication system for a transfer case may include a sump. A drive chain may be in operable association with the sump. A snubber may be disposed in close proximity to the drive chain. The snubber may include a channel and a conduit in fluid communication with the channel.