Crankcase Ventilation Filter Design for Efficient Servicing
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Summary
Problems
Existing crankcase ventilation systems face challenges in effectively filtering engine blowby gases, which contain both solid and liquid particulates, and require improvements in filtration efficiency and ease of servicing without compromising pressure drop or increasing complexity.
Innovation solutions
The development of a crankcase ventilation filter assembly with a housing that allows for easy servicing from both top and bottom, featuring a filter cartridge with rotational indexing arrangements and a design that includes molded inlet and outlet tubes, reducing the need for tooling and minimizing pressure drop, and utilizing a glass-filled Nylon 6/6 media for efficient filtration.
TRIZ Analysis
Specific contradictions:
General conflict description:
Principle concept:
If a traditional crankcase ventilation filter system is used, then filtration of blowby gases is provided, but servicing requires complex tooling and is difficult from both top and bottom
Why choose this principle:
The filter assembly is segmented into a housing and a removable filter cartridge. The cartridge can be independently removed from either the top or bottom of the housing, allowing servicing without complex tooling. The segmentation enables the filter element to be accessed and replaced by simply removing the cartridge from one end, eliminating the need for specialized service tools.
Principle concept:
If a traditional crankcase ventilation filter system is used, then filtration of blowby gases is provided, but servicing requires complex tooling and is difficult from both top and bottom
Why choose this principle:
Traditional filter systems typically allow servicing from only one end (top or bottom). This invention enables servicing from both top and bottom by designing the cartridge with removal features at both ends. The cartridge can be extracted from either the top opening or bottom opening of the housing, providing flexibility in servicing orientation and eliminating the constraint of single-end access.
Application Domain
Data Source
AI summary:
The development of a crankcase ventilation filter assembly with a housing that allows for easy servicing from both top and bottom, featuring a filter cartridge with rotational indexing arrangements and a design that includes molded inlet and outlet tubes, reducing the need for tooling and minimizing pressure drop, and utilizing a glass-filled Nylon 6/6 media for efficient filtration.
Abstract
A crankcase ventilation filter assembly and components therefor, are described. In an example arrangement, the crankcase ventilation filter assembly is configured to be serviced from either the top or the bottom. A rotational indexing arrangement is to ensure appropriate orientation of an internally received filter cartridge, and other components of the arrangement are provided. Methods of assembly, servicing and use are described.