Inertial Gas-Liquid Separator With Variable Flow Actuator
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional gas-liquid separators face challenges in efficiently removing small oil mist droplets from blow-by gases in internal combustion engines, as they are difficult to filter using fibrous media while maintaining low flow resistance, especially when recirculating gases back to the engine's air intake system.
Innovation Solution
The development of an inertial gas-liquid separator with a variable flow actuator that adjusts the number and size of nozzle orifices in response to pressure changes, ensuring consistent pressure differential and optimizing separation efficiency across varying engine conditions and sizes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If fibrous media is used to filter small oil mist droplets, then separation efficiency is improved, but flow resistance increases
Solution Approach 1:
The patent replaces the conventional fibrous filter media (mechanical filtration) with an inertial impactor system that uses centrifugal force and inertial collision to separate oil mist droplets from gas streams. The separator directs gas flow through curved paths and impact surfaces where droplets are thrown off by centrifugal force and inertial collision, achieving effective separation without the flow resistance associated with fibrous filters.
Solution Approach 2:
The patent introduces a variable flow actuator that dynamically adjusts the number and size of nozzle orifices based on pressure differential conditions. This allows the system to optimize flow characteristics and separation efficiency under varying engine conditions, maintaining low flow resistance while ensuring effective oil mist removal across different operating ranges.
2Reliability
If the separator is designed for high separation efficiency, then oil mist removal is improved, but device complexity increases
Solution Approach 1:
The variable flow actuator is designed to automatically adjust nozzle orifices based on pressure differential conditions without requiring external control systems. The actuator responds autonomously to changing engine conditions, maintaining optimal separation efficiency while avoiding the complexity of externally controlled systems.
Solution Approach 2:
The patent incorporates a variable flow actuator that dynamically adjusts the number and size of nozzle orifices in response to pressure differential changes. This dynamic adaptation allows the separator to maintain high separation efficiency across varying engine conditions while using a relatively simple mechanical adjustment mechanism rather than complex electronic control systems.
3Adaptability or versatility
If the separator handles varying engine conditions, then adaptability is improved, but manufacturing precision requirements increase
Solution Approach 1:
The variable flow actuator provides dynamic adjustment of nozzle orifices based on pressure differential conditions, enabling the separator to adapt to varying engine conditions. The mechanical design allows for adjustable orifices that can be modified during operation to match different engine operating ranges, reducing the need for extremely tight manufacturing tolerances across all possible conditions.
Solution Approach 2:
The system uses a variable flow actuator to change the number and size of active nozzles based on pressure differential measurements. This parameter adjustment mechanism allows the separator to adapt to different engine conditions by modifying flow characteristics, thereby achieving versatility without requiring each component to be manufactured with extreme precision for every possible operating condition.
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 solution effectively separates oil mist droplets from gas streams, maintaining low flow resistance and high separation efficiency, even under changing engine conditions, thereby improving the recirculation of gases back to the engine's air intake system.
Implementation Method 1
Liquid particles are removed from a gas-liquid stream by accelerating the stream or aerosol to high velocities through nozzles or orifices and directing same against an impactor, typically causing a sharp directional change, effecting the noted liquid separation
Implementation Method 2
a variable flow actuator that adjusts the number and size of nozzle orifices in response to pressure changes, ensuring consistent pressure differential
Implementation Method 3
In another type of known gas-liquid separator, a coalescer filter effects liquid particle separation, and coalesces separated liquid particles
Data Source
AI summary
A gas-liquid separator assembly has a flow passage providing expansion of and reduced flow velocity of the post-separation gas stream, and in some embodiments provides pre-escape regions facilitating partial pre-transition of some of the flow.