Crankcase Filter Assembly With Replaceable Element
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Solution Overview
Problem
Prior art inertial gas-liquid separators in diesel engines are not serviceable and prone to premature replacement due to particle buildup, necessitating a need for a serviceable and economical replaceable filter element.
Innovation Solution
A crankcase filter assembly with a removable cover and replaceable filter element, featuring a baffle with conical base and recess configuration that accelerates fluid to separate gas from liquid, allowing for efficient separation while being easily maintainable.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a sealed unit configuration is used for the crankcase filter assembly, then the assembly is compact and simple to manufacture, but it is not serviceable and requires premature replacement due to particle buildup
Solution Approach 1:
The filter assembly is divided into separate serviceable components including a removable cover, a baffle assembly, and a filter element that can be independently accessed and replaced. This segmentation allows maintenance without replacing the entire assembly while maintaining manufacturing simplicity through modular construction.
2Reliability
If a collection surface is used for impingement in the separation tube, then liquid particle separation is achieved, but particle buildup occurs causing premature replacement
Solution Approach 1:
Instead of using a collection surface that accumulates particles, the invention uses a conical base configuration where particles are directed away from accumulation zones. The inverted approach prevents buildup by design, allowing continuous operation without premature replacement while maintaining separation effectiveness.
Solution Approach 2:
The filter element is designed as a replaceable component that can be removed and replaced when saturated with particles. This allows the main assembly to be retained and reused while only the consumable filter element is discarded, extending the overall system lifespan.
3Ease of manufacture
If the filter assembly is designed as a sealed unit, then manufacturing is simplified, but maintenance requires complete replacement increasing costs
Solution Approach 1:
The assembly is segmented into modular components with a removable cover that provides access to internal elements. This allows selective replacement of only the filter element or baffle assembly rather than the entire unit, reducing maintenance costs while keeping manufacturing simple through standardized modular interfaces.
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 provides effective gas-liquid separation and allows for easy maintenance by preventing particle buildup, extending the filter's lifespan and reducing replacement costs.
Implementation Method 1
Inertial gas-liquid separators are known for use, particularly in diesel engines, in separating gas from liquid particles in a gas-liquid stream by accelerating the stream through holes or nozzles to achieve separation
Implementation Method 2
a collection surface is used for impingement, which causes separation of the liquid particle from the gas-liquid stream
Data Source
AI summary
A filter assembly that includes a separator for separating gas from a fluid. The assembly includes; a base with surrounding walls that define a fluid reservoir; a baffle that overlies at least a portion of the reservoir; a filter element that is beneath the baffle and in the reservoir; and, a cover that is removably fastened to the base and includes a fluid inlet that terminates in a conical base with an unrestricted opening and the baffle includes a fluid impact cone.