Variable Compressor Bladder Recirculation Slit Anti-Surge Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Turbocharger compressors face issues with surging and choking due to varying operating conditions, limiting their operational range and efficiency.
Innovation Solution
A variable compressor design featuring a recirculation slit with a bladder that expands and contracts to adjust the cross-sectional area, aided by a pressure providing device, to control airflow and prevent surging and choking.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a fixed inlet port design is used in the compressor, then the structure is simple, but the operational range is limited due to surging or choking under varying operating conditions
Solution Approach 1:
The inlet port structure is made dynamic through the bladder component that can expand and contract to adjust the recirculation slit cross-sectional area. This dynamic adjustment allows the compressor to adapt to varying operating conditions and expand its operational range while avoiding surging or choking phenomena.
Solution Approach 2:
The cross-sectional area of the recirculation slit is changed by varying the bladder volume through pressure control. By changing this geometric parameter dynamically, the system optimizes airflow characteristics across different operating conditions, resolving the contradiction between structural simplicity and operational adaptability.
2Productivity
If the recirculation slit cross-sectional area is increased, then airflow is improved, but the compressor housing volume increases
Solution Approach 1:
Instead of providing multiple fixed-size recirculation slits requiring larger housing volume, a single dynamic slit with a bladder is used. The bladder can adjust the slit area in real-time to match airflow demands, maintaining high productivity without increasing the compressor housing volume.
Solution Approach 2:
The single recirculation slit with adjustable cross-sectional area serves multiple functions across different operating conditions. The bladder mechanism allows one structure to provide variable airflow control, replacing what would otherwise require multiple fixed structures and larger housing volume.
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 expands the operational range of the turbocharger, improving output and fuel efficiency by dynamically adjusting airflow according to vehicle operating conditions.
Implementation Method 1
a bladder (5) installed to expand and contract so as to change a cross-sectional area of the recirculation slit (3)
Implementation Method 2
a pressure providing device configured to expand and contract the bladder (5)
Data Source
AI summary
The present disclosure relates to a variable compressor that may include a housing, a recirculation slit, a bladder, and a pressure providing device. The recirculation slit is formed in an inlet port of the compressor housing so as to discharge a portion of a fluid flowing into the inlet port to the outside of the inlet port and then reintroduce the portion of the fluid into the inlet port. The bladder is installed to expand and contract so as to change a cross-sectional area of the recirculation slit. The pressure providing device is disposed to expand and contract the bladder.