Additive Dispersing Filter for Engine Oil

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Solution Overview

Problem

Conventional oil filters rapidly deplete additives, leading to reduced engine protection and increased oil change intervals due to accelerated degradation of crankcase lube oil additive packages, especially in heavy-duty diesel engines, resulting in increased downtime and operating costs.

Innovation Solution

An oil filter with an integrated additive dispersing device that includes chambers with oil-soluble sealing materials, allowing for slow release of additives over the filter's useful life, ensuring continuous engine protection and extending oil change intervals.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If conventional oil filters are used with rapid additive release, then initial engine protection is improved, but additive depletion occurs quickly leading to reduced long-term protection

Engineering Contradiction:
Improveengine protectionVSAvoidadditive service life
Core Design Contradiction:
ReliabilityVSDuration of action of moving object

Solution Approach 1:

The filter element is designed to release additives in a controlled periodic manner rather than all at once. The porous structure and binder system create a reservoir that gradually releases additives over time, providing sustained engine protection throughout the oil filter's service life rather than depleting quickly after initial installation

Inventive Principle:
Principle #19Periodic action

Solution Approach 2:

The patent changes the release rate parameter of additives from rapid (conventional) to controlled slow release. This is achieved through the specific porous structure of the filter element and the binder system that regulates additive migration from the reservoir to the oil stream, extending the effective duration of additive action

Inventive Principle:
Principle #35Parameter changes

2Object-affected harmful factors

If heavy-duty diesel engines operate under emission regulations, then environmental compliance is improved, but additive package degradation accelerates reducing oil change intervals

Engineering Contradiction:
Improveemission complianceVSAvoidoil service life
Core Design Contradiction:
Object-affected harmful factorsVSDuration of action of stationary object

Solution Approach 1:

The filter is pre-loaded with a reservoir of additives before installation in the engine. This preliminary preparation ensures that additives are available from the start and released in advance of when they would be needed to counteract the accelerated degradation caused by heavy-duty diesel operating conditions and emission control requirements

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The additive reservoir acts as a cushion against the accelerated additive depletion caused by heavy-duty diesel engine conditions. The reservoir provides a buffer supply that compensates for the faster consumption rate induced by high-temperature operation and emission regulation compliance measures

Inventive Principle:
Principle #11Beforehand cushioning (Prior cushioning)

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 slow release of additives extends the life of engine oil, maintaining effective engine protection and reducing the frequency of oil changes, thereby minimizing downtime and operating costs.

Implementation Method 1

a metering opening that is sealed with an oil soluble material the metering opening being in fluid communication with the at least one chamber when the oil soluble material is removed from the metering opening

Methodology Applied
Scientific EffectSolubility: Solvation

Data Source

PatentUS8388838B2Additive dispersing filter and method of making
Publication Date: 2013.03.05 PGI NORTHSTAR LLC
  • US8388838B2 patent drawing
  • US8388838B2 patent drawing
  • US8388838B2 patent drawing

AI summary

A filter, comprising: a housing defining an inlet fluid opening and an outlet fluid opening, the inlet fluid opening and the outlet fluid opening defining a fluid path through the filter; a filter element disposed inside the filter housing, the filter element being disposed in the flow path such that fluid flowing through the flow path must pass through the filter element; and a dispersement device disposed within the housing, the dispersement device comprising a housing having at least one chamber for an additive disposed within the at least one chamber, the dispersement device further comprises a metering opening that is sealed with an oil soluble material the metering opening being in fluid communication with the at least one chamber when the oil soluble material is removed from the metering opening.