Tangential Inlet Oil Separator for Gas Fuel
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Solution Overview
Problem
Existing oil separators for gaseous fuels in internal combustion engines are inefficient due to reliance on gravity separation, leading to incomplete oil removal and maintenance challenges, particularly when dealing with high-pressure gaseous fuels contaminated with lubricating oil.
Innovation Solution
A device with a tangentially directed housing inlet creating a swirl flow for centrifugal separation in the inflow chamber, combined with a one-piece filter element and collection chamber, enhancing the separation process and simplifying maintenance by integrating the collection space with the filter element.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If gravity separation is used in the inflow chamber, then the device structure is simple, but the separation efficiency is insufficient
Solution Approach 1:
The patent changes the separation mechanism from gravity-based to centrifugal force-based by introducing a tangential inlet that generates swirl flow. This parameter change in the separation principle dramatically improves separation efficiency while maintaining structural simplicity through the cyclone separator design.
Solution Approach 2:
The patent employs curved flow paths and cyclonic motion patterns to generate centrifugal forces. The tangential inlet creates a rotating flow field where curved trajectories of gas and oil droplets enable effective separation based on density differences, significantly enhancing separation performance.
2Ease of repair
If the filter element and collection chamber are separate components, then the device allows independent maintenance of parts, but the maintenance complexity increases
Solution Approach 1:
The patent combines the filter element and collection chamber into a single integrated assembly. This merging allows the entire unit to be removed and replaced as one component, simplifying maintenance operations while maintaining the functional separation of filtration and collection capabilities.
Solution Approach 2:
The patent segments the oil separator into distinct functional modules: the integrated filter-element-with-collection-chamber assembly, the cyclone separator section, and the housing. This modular segmentation enables targeted maintenance of specific sections without requiring complete disassembly of the entire device.
3Ease of operation
If the collection chamber is not emptied during filter replacement, then the operation is simpler, but the initial collection volume is insufficient
Solution Approach 1:
By integrating the collection chamber with the filter element, the patent ensures that replacing the filter element automatically provides a fresh, empty collection chamber. This eliminates the need for separate emptying operations while guaranteeing sufficient collection volume for the next maintenance interval.
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
Significantly improves the separation efficiency of oil from gaseous fuels, ensuring reliable engine operation and easier maintenance by utilizing centrifugal forces and integrating the collection space with the filter element, reducing the risk of oil reaching the engine and simplifying filter replacement.
Implementation Method 1
the housing inlet (19) leading into the inflow chamber (61) is directed tangentially to the inner wall (65) of the inflow chamber (61) in such a way that a swirl flow is generated in it, which causes fluid to be separated by centrifugal forces
Implementation Method 2
a swirl flow is generated in it, which causes fluid to be separated by centrifugal forces
Implementation Method 3
After flowing through the filter medium of the filter element due to coalescence and gravity, further separated oil reaches the second fluid collection chamber
Implementation Method 4
oil components separated from the gaseous fuel in the inflow space by gravity separation
Data Source
Figure 1
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AI summary
The device has a housing (1) including an inflow area (61) separated from a fluid collection area (67) and a filter area by separation elements (39, 57). An exhaust connection (15) and other collection areas (36, 53) are connected to a clean side (33) of a filter element (31). Fluid separated at the filter element flows into the former collection area by a gravitational effect. A housing input (19) guided into the inflow area is directed tangential to an inner wall (65) of the inflow area such that spin flow causing fluid separation by centrifugal forces is produced in the inflow area.