Hydraulic Mount Assembly Actuator Decoupler Vibration Control
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Solution Overview
Problem
Vehicles experience vibrations due to external and internal factors, such as road conditions and powertrain operations, which are not effectively mitigated by existing technologies.
Innovation Solution
A hydraulic mount assembly with a mount body, a first plate, and a decoupler that separates chambers and allows fluid communication, supported by an actuator that adjusts the decoupler's position to control vibration suppression, including an actuator coupled to the first plate to manage fluid flow between chambers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a hydraulic mount assembly uses a decoupler to separate chambers for vibration suppression, then vibration reduction effectiveness is improved, but device complexity increases due to additional components and fluid management mechanisms
Solution Approach 1:
The hydraulic mount assembly is divided into multiple functional chambers (first chamber and second chamber) separated by a decoupler. This segmentation allows independent control of hydraulic fluid in each chamber, enabling the system to suppress vibrations more effectively while maintaining manageable complexity through modular design
Solution Approach 2:
The decoupler acts as an intermediary component between the first and second chambers, controlling fluid communication between them. This mediator element enables the system to achieve vibration suppression by regulating fluid flow timing and pressure differential, while keeping the overall device complexity controlled through a single key control component
2Object-affected harmful factors
If the decoupler is positioned to abut the first plate for preventing fluid communication, then vibration suppression is enhanced, but fluid flow control flexibility is reduced
Solution Approach 1:
The decoupler is designed to dynamically change its position and state based on operating conditions. It can transition between abutting the first plate to prevent fluid communication and allowing fluid flow when needed. This dynamic adaptability enables the system to optimize vibration suppression while maintaining fluid flow control flexibility through active positioning control
3Object-affected harmful factors
If the actuator actively manages fluid flow between chambers, then vibration reduction performance is improved, but energy consumption increases
Solution Approach 1:
The actuator operates periodically to manage fluid flow between chambers, activating only when vibration suppression is needed. This periodic action pattern allows the system to achieve effective vibration reduction performance while minimizing energy consumption by keeping the actuator inactive during normal operating conditions
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 hydraulic mount assembly effectively reduces vibrations in the passenger compartment by actively managing fluid flow and pressure differences between chambers, enhancing vibration suppression across different vehicle operating conditions.
Implementation Method 1
a pressure differential between the first and second chambers generates a force on the decoupler
Implementation Method 2
fluidly connects the first and second chambers
Implementation Method 3
The decoupler abuts the first plate when in the locked position to prevent fluid communication through the first passages
Data Source
AI summary
A hydraulic mount assembly includes a mount body defining a cavity. A powertrain includes a dynamic mass, and a structure that supports the dynamic mass. The assembly is attached to the structure and supports the dynamic mass. A first plate is fixed relative to the mount body inside the cavity to separate the cavity into a first chamber and a second chamber. The first plate defines a plurality of first passages that fluidly connects the first and second chambers. A decoupler is disposed between the first and second chambers. An actuator is coupled to the first plate. The decoupler is movable in response to actuation of the actuator. The decoupler abuts the first plate when in a locked position to prevent fluid communication through the first passages. The decoupler is movable relative to the first plate when in an unlocked position to allow fluid communication through the first passages.