Oil Separating Device With Collision Wall And Filter
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Solution Overview
Problem
Existing oil separating devices for blow-by gases are inefficient in separating oil mist containing both large and small particulates from the blow-by gas, leading to increased engine oil consumption and exhaust emissions.
Innovation Solution
An oil separating device with a filter and collision wall, where the blow-by gas flows through a spiral coalescing section to form larger droplets, and the filter removes coalesced oil mist, while the collision wall with uneven surfaces further separates remaining oil mist, enhancing collection efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If only a filter and separation plates are used, then the device structure is simple, but the separation efficiency for small oil particles is insufficient
Solution Approach 1:
The oil separating device is divided into multiple functional sections: a filter section for large particles, a coalescing section with corrugated plates for medium particles, and a collision wall section with uneven surfaces for small particles. Each section targets a specific particle size range, allowing the device to achieve high separation efficiency across all sizes without excessive complexity in any single component.
Solution Approach 2:
The invention introduces a third dimension to oil separation by adding vertical corrugated coalescing plates and a collision wall with uneven surfaces, transforming the traditional horizontal plate arrangement. This multi-dimensional approach creates varied flow paths and collision angles that enhance separation efficiency for different particle sizes without significantly increasing device complexity.
2Device complexity
If only collision with ribs is used, then the device structure is simple, but the separation efficiency for both large and small particulates is insufficient
Solution Approach 1:
The invention changes the physical parameters of the separation surfaces by introducing corrugated plates with specific wave patterns and collision walls with controlled unevenness. These parameter changes create optimal collision angles and surface areas for capturing oil droplets of various sizes, significantly improving separation efficiency while maintaining relatively simple device structure.
Solution Approach 2:
The oil separating device combines multiple separation mechanisms (filtration, coalescing on corrugated surfaces, and collision with uneven walls) into a single composite system. This composite approach integrates different separation principles that work synergistically to handle both large and small particulates efficiently, rather than relying on a single mechanism.
3Device complexity
If a traditional filter is used, then the device structure is simple, but the collection efficiency of oil mist is low
Solution Approach 1:
The corrugated coalescing plates perform preliminary action by causing oil mist to coalesce into larger droplets before the gas reaches the collision wall section. This pre-coalescing process transforms small, hard-to-capture oil particles into larger droplets that are more easily separated, thereby enhancing overall collection efficiency without adding complex active components.
Solution Approach 2:
The corrugated coalescing plates act as an intermediary between the filter and the collision wall. They transform the oil mist into a different state (coalesced droplets) that can be more effectively separated by the subsequent collision wall, serving as a mediating step that enhances the overall separation process.
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
Effectively separates oil droplets of all sizes from the blow-by gas, reducing engine oil consumption and exhaust emissions by improving the separation efficiency of oil mist.
Implementation Method 1
The oil separator is formed such that the oil mist in the blow-by gas coalesces together to form a coalesced oil mist
Implementation Method 2
the filter removes the coalesced oil mist from the blow-by gas
Implementation Method 3
the collision wall separates an oil mist remained in the blow-by gas passing through the filter
Data Source
AI summary
An oil separating device for separating an oil mist from a blow-by gas is arranged on a flow passage of the blow-by gas. The oil separating device includes an oil separator having an inlet formed at one end thereof and an outlet formed at another end thereof opposite to the one end; a collision wall arranged at a downstream side of the oil separator, and including an uneven portion formed on a surface thereof to face the outlet of the oil separator; and a filter arranged between the oil separator and collision wall. The oil separator is formed such that the oil mist in the blow-by gas coalesces together to form a coalesced oil mist, the filter removes the coalesced oil mist from the blow-by gas, and the collision wall separates a remained oil mist remained in the blow-by gas through the filter.