Crankcase Oil Mist Separation with Active Jet Acceleration
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Solution Overview
Problem
Existing oil mist separators for crankcase ventilation in internal combustion engines face inefficiencies in particle separation due to pressure losses and inadequate separation efficiency.
Innovation Solution
A device and method that actively accelerates fluid using a fluid jet from a second fluid line, introduced through a propulsion jet nozzle, to enhance separation efficiency by expanding the fluid and increasing pressure, allowing particles to be deposited on the nozzle's interior wall, thereby minimizing pressure losses and improving separation efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional oil mist separators are used for crankcase ventilation, then particle separation is performed, but separation efficiency is insufficient and pressure losses occur
Solution Approach 1:
The fluid is actively accelerated before entering the separation chamber, creating favorable flow conditions in advance. This preliminary acceleration ensures that particles are properly separated without requiring additional pressure loss during the separation process itself
Solution Approach 2:
The invention changes the flow parameters by actively accelerating the fluid through a dedicated acceleration device. This parameter change optimizes the separation process by controlling fluid velocity and flow patterns, achieving high separation efficiency while minimizing pressure losses
2Manufacturing precision
If fluid is accelerated through nozzles to improve separation, then separation efficiency increases, but pressure losses increase
Solution Approach 1:
The system is divided into distinct functional sections: an acceleration section with nozzles that recovers pressure, and a separation chamber where separation occurs. This segmentation allows each section to optimize its function without compromising the other, achieving high separation efficiency with minimal overall pressure loss
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 achieves improved separation efficiency without pressure losses, effectively returning oil-laden gases to the combustion process, maintaining crankcase negative pressure, and depositing particles on the nozzle's interior, thus enhancing the overall separation process.
Implementation Method 1
the at least one propulsion jet nozzle can be configured such that the at least one fluid jet expands in the first fluid line and the fluid in the first fluid line is actively accelerated with the expanded at least one fluid jet
Implementation Method 2
The fluid is accelerated in the nozzle and at the same time brought to a higher pressure level
Implementation Method 3
DE 20 2007 010 776 U1 describes an oil mist separator for internal combustion engines with a centrifugal separator having a disk separator and a gas guide ring axially surrounding a rotor
Implementation Method 4
the gases are set into rotation by a rotating element so that the suspended particles are separated from the gases by centrifugal force
Implementation Method 5
depositing particles on the nozzle's interior wall, thereby minimizing pressure losses and improving separation efficiency
Data Source
AI summary
Oil mist separator (1) for a crankcase ventilation for separating particles (2) from a fluid (3) guided from a first fluid line (14) to a deflector body device (20), with a device (10) for actively accelerating the fluid (3) in the first fluid line (14).