Oil Separator Unit With Nested U-Shaped Recesses

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Solution Overview

Problem

Existing oil separator units that regulate the position of a fiber material using upper and lower connecting parts face challenges in achieving high positional accuracy, leading to inadequate separation of oil mist from blowby gas.

Innovation Solution

An oil separator unit configuration featuring an upstream member with U-shaped recesses and a downstream member with U-shaped flanges, along with a porous fiber member, ensures accurate assembly and enhanced separation efficiency by maintaining high positional accuracy between the upstream and downstream plates.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Manufacturing precision

If a pair of upper and lower connecting parts are used to regulate the position of the fiber material, then the structure is simple and easy to manufacture, but the positional accuracy between the upstream plate and downstream plate is insufficient

Engineering Contradiction:
Improvepositional accuracyVSAvoidstructure complexity
Core Design Contradiction:
Manufacturing precisionVSDevice complexity

Solution Approach 1:

The downstream plate is nested within the upstream plate through the U-shaped recesses and flanges configuration, where the downstream plate fits into the upstream plate's recesses like a nested structure. This nesting relationship provides precise positional alignment and high positional accuracy without requiring additional connecting parts.

Inventive Principle:
Principle #7Nested doll (Nesting)

Solution Approach 2:

The U-shaped recesses on the upstream plate and U-shaped flanges on the downstream plate create an asymmetric fitting structure. This asymmetric design ensures that the downstream plate can only be positioned in one specific orientation and location relative to the upstream plate, thereby achieving high positional accuracy while maintaining structural simplicity.

Inventive Principle:
Principle #4Asymmetry

2Productivity

If the fiber material position is regulated by connecting parts, then the assembly process is simple, but the separation efficiency of oil mist is insufficient

Engineering Contradiction:
Improveseparation efficiencyVSAvoidassembly simplicity
Core Design Contradiction:
ProductivityVSEase of operation

Solution Approach 1:

The nested configuration of the downstream plate within the upstream plate through U-shaped recesses and flanges ensures that the fiber material is positioned with high precision. This precise positioning optimizes the flow path of blowby gas through the fiber material, enhancing oil mist separation efficiency while keeping the assembly process simple as the plates fit together naturally without complex fastening procedures.

Inventive Principle:
Principle #7Nested doll (Nesting)

Solution Approach 2:

The U-shaped recesses and flanges are pre-formed during manufacturing, so that when the upstream and downstream plates are assembled, the downstream plate automatically aligns with the correct position. This preliminary preparation of positioning features eliminates the need for complex adjustment procedures during assembly, maintaining ease of operation while achieving high separation efficiency.

Inventive Principle:
Principle #10Preliminary action

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

This configuration allows for precise assembly and improved oil mist separation, enhancing the rigidity of the separator unit and ensuring effective separation of oil mist from blowby gas.

Implementation Method 1

a fiber member extending in an up-down direction and having a rear surface opposed to the front surface, the fiber member trapping the oil mist contained in the blowby gas that has passed through the through hole

Methodology Applied
Scientific EffectAdsorption: Adsorption

Implementation Method 2

a fiber member extending in an up-down direction and having a rear surface opposed to the front surface, the fiber member trapping the oil mist contained in the blowby gas that has passed through the through hole

Methodology Applied
Scientific EffectFiltration: Filter (physical)

Implementation Method 3

an upstream plate provided with a through hole, and a downstream plate opposed to the upstream plate, the downstream plate including a thick portion having a larger thickness than other portions

Methodology Applied
Scientific EffectMechanical support: Mechanical Force

Data Source

PatentUS10774705B2Oil separator unit
Publication Date: 2020.09.15 HONDA MOTOR CO LTD
  • US10774705B2 patent drawing
  • US10774705B2 patent drawing
  • US10774705B2 patent drawing

AI summary

An oil separator unit including an upstream member having an opening through which the blowby gas passes, a downstream member having a hit portion hit by the blowby gas, and a porous member trapping the oil mist contained in the blowby gas that has passed through the through hole. The upstream member includes an upstream surface facing a first surface of the porous member and a pair of recesses formed in substantially U-shapes along circumference portions in both end sides on an upstream surface of the upstream member, and the downstream member includes a pair of flange parts formed in substantially U-shapes so as to fit in the pair of recesses.