Active Fuel Injection Vibration Damping for Broad Frequency Control
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Solution Overview
Problem
Conventional vibration damping systems for fuel injection systems in motor vehicles are limited to specific frequency ranges and fail to effectively address noise reduction, especially under varying operating conditions and potential component failures.
Innovation Solution
An actively controllable vibration damping system incorporating piezoelectric actuator elements integrated into spring-mass damping systems, allowing adaptive stiffness and path changes, enabling effective vibration reduction across wide frequency ranges and facilitating early fault detection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If passive isolation elements are used for vibration damping, then the structure is simple and reliable, but the frequency range of vibration reduction is limited
Solution Approach 1:
The patent applies active vibration control by introducing controllable actuators that can dynamically adjust damping forces in real-time based on detected vibration characteristics. This transforms the static passive damping system into a dynamic active system capable of adapting to varying frequency ranges and operating conditions, thereby resolving the contradiction between limited frequency range and system complexity.
Solution Approach 2:
The patent implements feedback control by using sensors to detect vibration signals and feeding this information back to control actuators that generate counteracting forces. This closed-loop feedback mechanism enables the system to actively compensate for vibrations across a broad frequency range while maintaining manageable complexity through intelligent control algorithms.
2Adaptability or versatility
If actively controllable actuator elements are introduced, then vibration damping across wide frequency ranges is achieved, but device complexity increases
Solution Approach 1:
The patent makes the active actuators serve multiple functions: they provide vibration damping across wide frequency ranges while simultaneously enabling fault detection and system state monitoring. This multi-functionality reduces the need for separate dedicated components, thereby managing complexity while enhancing adaptability to various operating conditions.
Solution Approach 2:
The patent enables the vibration damping system to self-diagnose by using the same actuators and sensors to detect faults such as holder failures or metering valve wear. This self-service capability eliminates the need for separate monitoring systems, reducing overall device complexity while maintaining high adaptability to changing operating conditions.
3Reliability
If multiple actively controllable actuator elements are provided, then optimal vibration reduction is achieved, but control unit requirements increase
Solution Approach 1:
The patent divides the vibration control function into multiple independent actuator elements, each responsible for specific vibration modes or frequency ranges. This segmentation allows the control unit to manage complexity by processing each actuator's control independently, improving overall vibration reduction effectiveness while keeping control architecture manageable through modular control strategies.
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 system achieves deliberate and effective sound emission damping, monitors structural integrity, and detects potential failures, providing intelligent acoustic monitoring and load data detection, thereby suppressing design-relevant vibration loads.
Implementation Method 1
An example vibration damping system according to the present invention and an example injection system according to the present invention may have the advantage that an improved reduction of noise is made possible. In particular, in contrast to passive measures for vibration damping, as they are implementable by passive isolation elements, damping in other and/or broader frequency ranges may be made possible.
Data Source
AI summary
A vibration damping system for injection systems of motor vehicles includes an actively controllable actuator element, which is situated at a component of the injection system. The actuator element is situated at the component in such a way that, during operation of the injection system a vibration reduction of the injection system is achieved with the aid of an active control of the actuator element.