Actuator System Integration in Exhaust Gas Guiding Device
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Solution Overview
Problem
Existing emission signature modification devices for exhaust gas streams face challenges in achieving long service life and minimizing installation space requirements due to exposure to high temperatures and corrosive environments, leading to reduced durability and increased damage from external influences.
Innovation Solution
The device positions more than 30% of the actuator system in a circumferential direction within the exhaust gas guiding device, surrounding it with the exhaust gas stream to reduce installation space and protect it from external damage, while also using a cooling system to extend the actuator's service life.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the actuator system is mounted externally on the side of the exhaust gas guiding device, then the installation space requirement is increased, but the actuator system is exposed to external influences and thermal stress
Solution Approach 1:
The actuator system is integrated inside the exhaust gas guiding device, with more than 30% of the actuator system surrounded by the guided exhaust gas stream in a circumferential direction. This nesting approach protects the actuator from external influences while utilizing the existing exhaust gas flow path, eliminating the need for additional external mounting space.
Solution Approach 2:
The actuator system and exhaust gas guiding device are combined into a single integrated structure. The actuator is positioned within the exhaust gas guiding device such that the exhaust gas stream surrounds a significant portion of the actuator circumferentially, merging the acoustic modification function with the exhaust gas flow path.
2Area of stationary object
If the actuator system is surrounded by exhaust gas stream, then thermal stress on the actuator system increases, but the installation space requirement is reduced
Solution Approach 1:
The exhaust gas stream that would normally be considered a harmful thermal influence on the actuator is utilized as a protective medium. By surrounding more than 30% of the actuator circumferentially with the exhaust gas stream, the system converts the thermal exposure into a protective arrangement that shields the actuator from external environmental influences while the exhaust gas flow provides a controlled thermal environment.
3Reliability
If the actuator system is positioned inside the exhaust gas guiding device, then the actuator system is protected from external influences, but the manufacturing complexity increases
Solution Approach 1:
The exhaust gas guiding device is designed with segmented or modular structures that allow the actuator system to be integrated at specific positions along the exhaust gas flow path. The guiding device includes multiple regions (inlet region, intermediate region, outlet region) that can be manufactured and assembled separately, reducing overall manufacturing complexity while maintaining protection of the actuator.
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 design enhances the service life of the actuator system by protecting it from external influences and reducing thermal stress, allowing for a more compact and efficient emission signature modification device that can effectively modify both acoustic and heat signatures.
Implementation Method 1
more than 30% of an actuator system of the active acoustic emission modification device can be surrounded in a circumferential direction by the guided exhaust gas stream
Implementation Method 2
active acoustic emission modification devices which operate on the principle of interference
Data Source
AI summary
An emission signature modification device for modifying an acoustic signature of an exhaust gas stream, including an exhaust gas guiding device that guides the exhaust gas stream in the flow direction thereof from an inlet area to an outlet area. An active acoustic emission modification device modifies the acoustic emission of the exhaust gas stream in predetermined operating states. If an actuator system of the active acoustic emission modification device is designed such that in a circumferential direction, the actuator system is surrounded by more than 30% of the guided exhaust gas stream, the actuating system can be protected against harmful influences from the environment by way of the exhaust gas guiding device on the one hand, and on the other hand, the required space signifier can be reduced as compared to a lateral, external arrangement of the actuating system.