Engine Oil Filter Bypass Valve Additive Replenishment
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Solution Overview
Problem
Existing methods for adding additives to engine lubricants while circulating within an engine release additives continuously, reducing lubricant life and potentially causing deposits and catalyst poisoning, and are not compatible with certain anti-wear additives.
Innovation Solution
An apparatus with a by-pass valve in the engine lubricant filter that opens at a pre-determined back-pressure, allowing lubricant to flow through an additive chamber containing the additives, ensuring replenishment only when needed, using a spring-type valve and a container with pores or a mesh bag for controlled release.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If additives are released continuously over time, then the lubricant is replenished with additives, but the lubricant's useful life is reduced and deposits may form
Solution Approach 1:
The system uses periodic action by employing a by-pass valve that opens only at specific intervals when back-pressure reaches a pre-determined threshold. This causes the additive chamber to release additives periodically rather than continuously, replenishing the lubricant only when necessary and preserving its useful life while preventing unnecessary additive accumulation that could lead to deposits.
2Quantity of substance
If additives are released continuously over time, then the lubricant is replenished with additives, but catalysts may be poisoned
Solution Approach 1:
The periodic release mechanism controlled by the by-pass valve ensures additives are introduced only when the lubricant requires replenishment, rather than continuously. This intermittent approach prevents excessive additive accumulation that could migrate to and poison exhaust system catalysts, while still maintaining adequate lubricant additive levels.
3Ease of operation
If gel type technology is used, then additives can be added to circulating lubricant, but compatibility with certain anti-wear additives is compromised
Solution Approach 1:
The invention extracts the additive delivery function from the lubricant flow path by using a separate additive chamber connected via a by-pass valve. This separation allows the lubricant to flow through the filter normally while additives are introduced only when back-pressure indicates a need, avoiding compatibility issues between gel-type additives and certain anti-wear additives like ZDDP that may react adversely when mixed continuously.
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 solution ensures additives are added to the lubricant only when necessary, maintaining lubricant life and preventing deposits and catalyst poisoning, while being compatible with various additives, including anti-wear additives like ZDDP.
Implementation Method 1
a by-pass valve which in use opens when the pressure of the lubricant passing through the filter exceeds a pre-determined back-pressure value
Data Source
AI summary
Apparatus and method for adding one or more additives to an engine lubricant, while the lubricant is circulating within an engine having an engine lubricant filter with a by-pass valve which opens when the pressure of the lubricant passing through the filter exceeds a pre-determined back-pressure value in which the apparatus further comprises an additive chamber containing one or more additives operably connected to the by-pass valve such that when the by-pass valve opens at the pre-determined back-pressure, at least some of the lubricant is caused to flow through the additive chamber and contact the one or more additives.